Redeemable Preferred Stock and Stockholders' Equity - Additional Information (Detail)

v3.23.1

Redeemable Preferred Stock and Stockholders' Equity - Additional Information (Detail)												1 Months Ended				6 Months Ended	12 Months Ended
	Jun. 27, 2022 USD ($) $ / shares shares	Jun. 10, 2022 shares	Feb. 10, 2021 USD ($) $ / shares shares	Sep. 28, 2020 USD ($) $ / shares	Jul. 23, 2020 USD ($) $ / shares shares	Jun. 10, 2020 USD ($) $ / shares shares	Jun. 08, 2020 USD ($) $ / shares shares	Nov. 14, 2018 USD ($) d $ / shares shares	Nov. 09, 2018 USD ($) d $ / shares shares	Sep. 27, 2018 USD ($) $ / shares	Mar. 06, 2018 USD ($) $ / shares	Aug. 31, 2020 $ / shares	Mar. 31, 2020 USD ($) $ / shares shares	Nov. 30, 2019 $ / shares shares	Oct. 31, 2019 USD ($) $ / shares	Jun. 30, 2020 $ / shares	Dec. 31, 2022 USD ($) $ / shares shares	Dec. 31, 2021 USD ($) shares	Dec. 31, 2020 USD ($) shares	Dec. 31, 2019 USD ($) $ / shares shares	Mar. 01, 2022 $ / shares	Feb. 28, 2021 USD ($)	May 31, 2019 shares
Redeemable Noncontrolling Interest [Line Items]
Additional paid-in capital | $																	$ 301,782,000	$ 293,325,000
Other liabilities | $																	362,000	330,000
Accrued liabilities | $																	9,210,000	8,276,000				$ 600,000
Allocated Share-based Compensation Expense | $																	2,303,000	1,662,000	$ 3,370,000
Equity raise of gross proceeds | $			$ 14,400,000
Common stock, par value $0.001 per share | $																	$ 8,000	$ 6,000
Common stock, shares issued																	7,723,000	6,149,000
Common stock, shares authorized																	180,000,000	180,000,000
Share price | $ / shares			$ 25.75
Sale of common stock, net, shares	678,745,000
Warrants adjusted exercise price | $ / shares																$ 15.00
Common stock, shares outstanding																	7,721,000	6,147,000
Allocated to the warrants based upon fair values | $						$ 3,900,000
Issuance costs for common stock warrants | $																	$ 0	$ 0	1,641,000
Paid or declared dividends | $																	0	0	0
Proceeds from the exercise of warrants | $																	1,000	16,562,000	46,000
Change in fair value of warrants | $																	$ 0	$ 0	$ (5,850,000)
Volatility																		111.00%	103.00%
Expected term (years)																		6 years 1 month 6 days	5 years 6 months
Risk-free interest rate																		1.00%	0.40%
Stock options outstanding																	52,000	70,000	96,000	52,000
Other offering expenses | $							$ 700,000
Stock options granted																	0	0
Stock Options
Redeemable Noncontrolling Interest [Line Items]
Stock options outstanding																	3,500	3,500
Stock options cancelled																	7,000,000
Stock options granted																	0	3,000	50,000
Restricted Stock Units (RSUs)
Redeemable Noncontrolling Interest [Line Items]
Granted or Issued																	517,000	124,000	125,000
Phantom Share Units (PSUs) [Member]
Redeemable Noncontrolling Interest [Line Items]
Additional paid-in capital | $																	$ 100,000
Other liabilities | $																	300,000	$ 300,000
Allocated Share-based Compensation Expense | $																	$ 200,000
Share-based Compensation Arrangement by Share-based Payment Award, Shares Issued in Period																	31,000	402,000
Stock Appreciation Rights (SARs) [Member]
Redeemable Noncontrolling Interest [Line Items]
Additional paid-in capital | $																	$ 500,000
Accrued liabilities | $																		$ 300,000
Allocated Share-based Compensation Expense | $																	$ 300,000
Share-based Compensation Arrangement by Share-based Payment Award, Shares Issued in Period																		39,000
2002 Stock Incentive Plan
Redeemable Noncontrolling Interest [Line Items]
Options and restricted stock units outstanding																	23,000
Common stock issued pursuant to options exercised																	41,000
Common stock authorized for issuance																	124,400
2018 Long-Term Incentive Plan
Redeemable Noncontrolling Interest [Line Items]
Increase in Number of Units Available for Issuance																	100,000
Options and restricted stock units outstanding																	1,000,000.0
Common stock authorized for issuance																	1,500,000
2018 Long-Term Incentive Plan | Restricted Stock Units (RSUs) | Employees
Redeemable Noncontrolling Interest [Line Items]
Shares Issued AS Part Of Quarter Bonus Program																			62,000
Remaining awards vest based on certain Company performance criteria																			28,000
Units are subject to time-based vesting																			14,000
Granted or Issued																	217,000,000	121,000	104,000
2018 Long-Term Incentive Plan | Restricted Stock Units (RSUs) | Boards
Redeemable Noncontrolling Interest [Line Items]
Granted or Issued																	265,000
Stock options granted																			48,000
Deferred Compensation Plan | Restricted Stock Units (RSUs)
Redeemable Noncontrolling Interest [Line Items]
Share based payment award, number of shares unvested and outstanding																	170,000
Share based payment award, number of shares vested																	86,000
Original Western Alliance Warrant
Redeemable Noncontrolling Interest [Line Items]
Conversion price | $ / shares											$ 58.75
Exercise price of warrants | $ / shares										$ 53.25
Warrants expire date										Sep. 27, 2028
SWK Warrants
Redeemable Noncontrolling Interest [Line Items]
Convertible preferred stock, shares issued and sold									14,881					2,551,000
Warrants adjusted strike price | $ / shares													$ 12.25	$ 25.00	$ 1.00
Warrant issued														63,779
Warrants fair value assumptions, risk-free interest rate									3.13%
Warrants expiration period									8 years
Warrants fair value assumptions, expected volatility rate									81.79%
Warrants fair value assumptions annual dividend per share | $ / shares									$ 0.00
Exercise price of warrants | $ / shares									$ 33.50				$ 9.75
Change in fair value of warrants | $									$ 400
Number of trading days of average closing price of common stock | d									10
Additional Warrants issued to purchase shares of common stock													63,779
Warrants expire date									Nov. 09, 2026
Warrants issued to purchase shares of common stock									372,023				487,198
DPG Warrants
Redeemable Noncontrolling Interest [Line Items]
Convertible preferred stock, shares issued and sold								11,194
Warrants fair value assumptions, risk-free interest rate									3.13%
Finder's fee | $								$ 400,000
Adjusted exercise price of warrants | $ / shares												$ 9.50					$ 15.50
Warrants expiration period									8 years
Warrants fair value assumptions, expected volatility rate									81.79%
Warrants fair value assumptions annual dividend per share | $ / shares									$ 0.00
Exercise price of warrants | $ / shares								$ 33.50
Change in fair value of warrants | $									$ 300,000
Number of trading days of average closing price of common stock | d								10
Warrants expire date								Nov. 09, 2026
Warrants issued to purchase shares of common stock								279,851
SWK Warrants and DPG Warrants
Redeemable Noncontrolling Interest [Line Items]
Convertible Preferred Stock Converted to Common stock | $								$ 5,989,000
Exercise price of warrants | $ / shares								$ 54.25
Warrants issued to purchase shares of common stock																							149,727
Common Stock
Redeemable Noncontrolling Interest [Line Items]
Temporary equity preferred stock, shares outstanding																	7,723,000	6,149,000	3,908,000	1,258,000
Common stock, shares issued			560,000														7,722,717
Sale of common stock, net, shares		432,000															679,000	560,000	432,000
Common stock, shares outstanding																	7,720,914
Exercise price of warrants | $ / shares						$ 12.875
Other offering expenses | $			$ 1,100,000
Warrants issued to purchase shares of common stock						432,000,000
Common Stock | SWK Warrants
Redeemable Noncontrolling Interest [Line Items]
Exercisable shares of common stock														19,488
June 2020 Warrants
Redeemable Noncontrolling Interest [Line Items]
Conversion Of Preferred Stock Into Common Stock																		298,000,000
Warrant issued						10,800,000
Proceeds of common stock and warrants | $																	$ 6,200,000
Common stock, shares issued					100,000
Sale of common stock, net, shares	678,745,000
Dividend Declared | $																	$ 0
Exercise price of warrants | $ / shares																	$ 10.50
Proceeds from the exercise of warrants | $																	$ 7,500,000	$ 0
Allocation to preferred stock and warrants before issuance costs | $																	$ 3,000,000.0
Volatility																	109.80%
Expected term (years)																	5 years
Closing price of common stock | $ / shares																	$ 13.50
Risk-free interest rate																	0.45%
Allocation to common stock and warrants before issuance costs | $																	$ 3,900,000
Maximum
Redeemable Noncontrolling Interest [Line Items]
Temporary equity preferred stock, shares authorized																	1,000,000
Common stock, shares authorized																			180,000,000
Maximum | Original Western Alliance Warrant
Redeemable Noncontrolling Interest [Line Items]
Warrants issued to purchase shares of common stock equal value | $										$ 120,000,000	$ 120,000
Maximum | SWK Warrants
Redeemable Noncontrolling Interest [Line Items]
Exercise price of warrants | $ / shares																	$ 22.00
Change in fair value of warrants | $													$ 100,000
Maximum | DPG Warrants
Redeemable Noncontrolling Interest [Line Items]
Exercise price of warrants | $ / shares																	35.50
Minimum
Redeemable Noncontrolling Interest [Line Items]
Common stock, shares authorized																			40,000,000
Minimum | SWK Warrants
Redeemable Noncontrolling Interest [Line Items]
Exercise price of warrants | $ / shares																	33.50
Minimum | DPG Warrants
Redeemable Noncontrolling Interest [Line Items]
Exercise price of warrants | $ / shares																	$ 54.25
Series G Preferred Stock [Member]
Redeemable Noncontrolling Interest [Line Items]
Temporary Equity, Par or Stated Value Per Share | $ / shares																					$ 0.001
Series F Preferred Stock [Member]
Redeemable Noncontrolling Interest [Line Items]
Conversion Of Preferred Stock Into Common Stock					1,800,000
Temporary equity preferred stock, shares outstanding																		251	882
Temporary equity preferred stock, shares authorized					18,000
Preferred Stock, No Par Value | $ / shares					$ 0.001
Common stock, par value $0.001 per share | $					$ 1,000
Proceeds of common stock and warrants | $																	$ 18,000,000.0
Proceeds from issuance of equity securities | $																	18,000,000.0
Broker fees and related expenses | $																	1,900,000
Sale of common stock, net, shares																		1,000	17,000
Deemed dividend on convertible preferred stock | $					$ 2,700,000												200,000	$ 500,000
Proceeds from issuance of warrants | $																	2,700,000	$ 15,300,000
Series F Preferred Stock [Member] | June 2020 Warrants
Redeemable Noncontrolling Interest [Line Items]
Warrant issued					45,000,000
Series F Preferred Stock [Member] | Rights Offering
Redeemable Noncontrolling Interest [Line Items]
Proceeds allocated to the warrants based upon fair values | $																	2,700,000
Deemed dividend on convertible preferred stock | $																			$ 14,700,000
Allocated to the warrants based upon fair values | $																	$ 15,300,000
Series E Preferred Stock [Member]
Redeemable Noncontrolling Interest [Line Items]
Temporary equity numbers of shares sold																				69,565
Conversion Of Preferred Stock Into Common Stock																				278,240
Temporary equity net proceeds from conversion to common stock | $																				$ 4,000,000.0
Convertible preferred stock, shares issued and sold																	0	0		69,565
Temporary equity preferred stock, shares outstanding																	0	0
Convertible Preferred Stock Converted to Common stock | $																				$ 278,260
Temporary Equity, Par or Stated Value Per Share | $ / shares																				$ 0.001
Convertible preferred stock, shares issued upon conversion																				4
June 2022 Warrants [Member]
Redeemable Noncontrolling Interest [Line Items]
Sale of common stock, net, shares	678,745,000
Exercise price of warrants | $ / shares	$ 0.001
Proceeds from offering | $	$ 6,500,000
Combined purchase price of share and warrant | $ / shares	$ 4.625
June 2022 Pre-Funded Warrants [Member]
Redeemable Noncontrolling Interest [Line Items]
Warrant issued	726,660,000
Equity raise of gross proceeds | $	$ 5,600,000
Combined purchase price of share and warrant | $ / shares	$ 4.624
Series F Preferred Stock And July Two Thousand Twenty [Member] | Rights Offering
Redeemable Noncontrolling Interest [Line Items]
Conversion Of Preferred Stock Into Common Stock					1,800,000,000
Sale of common stock, net, shares					18,000
Exercise price of warrants | $ / shares					$ 8.50
Volatility					109.80%
Expected term (years)					5 years
Closing price of common stock | $ / shares					$ 11.00
Risk-free interest rate					0.27%
July Two Thousand Twenty Warrants [Member]
Redeemable Noncontrolling Interest [Line Items]
Warrant issued					45,000,000
Issuance costs for common stock warrants | $																	$ 1,600,000
Proceeds from the exercise of warrants | $																		$ 28,100,000	$ 3,900,000
Allocation to preferred stock and warrants before issuance costs | $																	15,300,000
Change in fair value of warrants | $				$ 5,800,000
Equity, Fair Value Adjustment | $				$ 9,500,000
July Two Thousand Twenty Warrants [Member] | Rights Offering
Redeemable Noncontrolling Interest [Line Items]
Exercise price of warrants | $ / shares					$ 10.00
Dividend yield					0.00%
Series F Preferred Stock And July Two Thousand Twenty Amendment [Member]
Redeemable Noncontrolling Interest [Line Items]
Convertible preferred stock, shares issued and sold																		154,480,000
Convertible Preferred Stock Converted to Common stock | $																	1,122,500,000
Exercise price of warrants | $ / shares				$ 5.25
Volatility				109.50%
Expected term (years)				5 years
Closing price of common stock | $ / shares				$ 7.00
Dividend yield				0.00%
Risk-free interest rate				0.26%
Convertible Preferred Stock [Member]
Redeemable Noncontrolling Interest [Line Items]
Conversion price | $ / shares					$ 10.00
Allocation to preferred stock and warrants before issuance costs | $																	2,700,000
Private Placement
Redeemable Noncontrolling Interest [Line Items]
Temporary equity numbers of shares sold							432,000,000
Warrant issued							10,800,000,000
Proceeds from issuance of equity securities | $																	$ 5,600,000
Exercise price of warrants | $ / shares							$ 12.88
Private Placement | Series F Preferred Stock [Member]
Redeemable Noncontrolling Interest [Line Items]
Convertible preferred stock, shares issued upon conversion																		251
Private Placement | Series E Preferred Stock [Member]
Redeemable Noncontrolling Interest [Line Items]
Temporary equity numbers of shares sold																				69,565
Temporary equity net proceeds from conversion to common stock | $															$ 4,000,000.0
Share price | $ / shares																				$ 57.50
Private Placement | June 2022 Warrants [Member]
Redeemable Noncontrolling Interest [Line Items]
Warrant issued	1,405,405,000
Public Offering
Redeemable Noncontrolling Interest [Line Items]
Proceeds from offering | $						$ 6,900,000	$ 6,900,000
Warrant expiration date						Jun. 10, 2025
Combined purchase price of share and warrant | $ / shares							$ 16.00