Description of Business and Basis of Presentation - Additional Information (Detail) $ in Thousands |
May 10, 2018 |
Jun. 30, 2019
USD ($)
|
May 07, 2019
USD ($)
|
Mar. 31, 2019
USD ($)
|
Dec. 31, 2018
USD ($)
|
Jun. 30, 2018
USD ($)
|
Dec. 31, 2017
USD ($)
|
|---|---|---|---|---|---|---|---|
| Basis Of Presentation [Line Items] | |||||||
| Working capital | $ 13,800 | ||||||
| Cash and cash equivalents, including restricted cash | 4,032 | $ 8,356 | $ 3,146 | $ 11,896 | |||
| Accounts receivable | $ 9,740 | $ 11,112 | |||||
| Reverse stock split ratio | 0.2 | ||||||
| SWK Loan | |||||||
| Basis Of Presentation [Line Items] | |||||||
| Line of credit facility, maximum borrowing capacity | $ 15,000 | $ 12,500 |
| X | ||||||||||
- Definition Basis of presentation. No definition available.
|
| X | ||||||||||
- Definition A financial calculation subtracting current liabilities from current assets. No definition available.
|
| X | ||||||||||
- Definition Amount due from customers or clients, within one year of the balance sheet date (or the normal operating cycle, whichever is longer), for goods or services (including trade receivables) that have been delivered or sold in the normal course of business, reduced to the estimated net realizable fair value by an allowance established by the entity of the amount it deems uncertain of collection. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition Amount of cash and cash equivalents, and cash and cash equivalents restricted to withdrawal or usage. Excludes amount for disposal group and discontinued operations. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits. Cash equivalents include, but are not limited to, short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Ratio applied to the conversion of stock split, for example but not limited to, one share converted to two or two shares converted to one. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Details
|