XML 44 R29.htm IDEA: XBRL DOCUMENT v3.10.0.1
Balance Sheet Details - Schedule of Inventory (Detail) - USD ($)
$ in Thousands
Jun. 30, 2018
Dec. 31, 2017
Inventory Disclosure [Abstract]    
Raw material $ 3,334 $ 4,084
Work in process 744  
Finished goods 659 1,164
Inventory $ 4,737 $ 5,248