Quarterly report pursuant to Section 13 or 15(d)

Subsequent Event - Additional Information (Detail)

v3.19.1
Subsequent Event - Additional Information (Detail) - USD ($)
$ in Millions
 3 Months Ended
May 07, 2019
Mar. 31, 2019
SWK Loan    
Subsequent Event [Line Items]    
Line of credit facility, maximum borrowing capacity   $ 12.5
Debt instrument covenant description   (i) maintain unencumbered liquid assets of no less than $1.5 million or the sum of aggregate cash flow from operations less capital expenditures, ii) achieve certain revenue and EBITDA levels during the first two years of the loan, (iii) limit future borrowing, investments and dividends, and (iv) submit monthly and quarterly financial reporting.
Subsequent Event | SWK Warrants    
Subsequent Event [Line Items]    
Additional warrants to purchase common stock value $ 0.3  
Subsequent Event | DPG Warrants    
Subsequent Event [Line Items]    
Additional warrants to purchase common stock value 0.1  
Additional finders fee 0.1  
Subsequent Event | SWK Loan    
Subsequent Event [Line Items]    
Line of credit facility, maximum borrowing capacity 15.0  
Minimum level of liquidity financial covenant 1.5  
Loan origination and other fees to be paid $ 0.2  
Debt instrument covenant description (a) adjust minimum revenue and EBITDA levels, (b) require the Company to have a shelf registration statement declared effective by the SEC before September 30, 2019, with a proposed maximum aggregate offering price of at least $10.0 million if the Company does not reach set minimum revenue levels for the three-month period ended June 30, 2019, and (c) require minimum liquidity of $1.5 million at all times and if aggregate minimum revenue and EBITDA levels are not achieved by September 30, 2019, the minimum liquidity requirement will be increased to $3.0 million, until the Company has obtained additional equity or debt funding of no less than $5.0 million.  
Additional equity or debt funding requirement until minimum liquidity is met $ 5.0  
Maximum aggregate offering price 10.0  
Increase in minimum liquidity requirement if aggregate minimum revenue and EBITDA levels are not achieved $ 3.0