Quarterly report pursuant to Section 13 or 15(d)

Description of Business and Basis of Presentation - Additional Information (Detail)

v3.7.0.1
Description of Business and Basis of Presentation - Additional Information (Detail) - USD ($)
$ in Thousands
6 Months Ended
Apr. 18, 2017
Jun. 30, 2017
Dec. 31, 2016
Description Of Business And Basis Of Presentation [Line Items]      
Proceeds from equity offering, net of expenses   $ 10,457  
Working capital   18,800  
Cash and cash equivalents, including restricted cash   8,200  
Net accounts receivable   9,804 $ 9,784
Private Placement      
Description Of Business And Basis Of Presentation [Line Items]      
Proceeds from equity offering, gross $ 10,500 $ 10,500  
Payments of stock issuance costs 200    
Proceeds from equity offering, net of expenses $ 10,300