XML 14 R40.htm IDEA: XBRL DOCUMENT v3.19.3
Commitments and Contingencies - Schedule of Components of Leases Expense (Detail) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2019
Sep. 30, 2018
Sep. 30, 2019
Sep. 30, 2018
Leases [Abstract]        
Operating lease cost $ 330   $ 577  
Short-term lease cost 72   185  
Sublease income (28)   (83)  
Total lease cost $ 374 $ 100 $ 679 $ 300