XML 52 R41.htm IDEA: XBRL DOCUMENT v3.19.1
- Inventory Valued at Lower of Cost (First-in, First-out) or Market, Net of Inventory Obsolescence Reserve (Detail) - USD ($)
$ in Thousands
Mar. 31, 2019
Dec. 31, 2018
Inventory Disclosure [Abstract]    
Raw materials $ 239 $ 311
Finished goods 44,446 53,569
Inventory, net $ 44,685 $ 53,880