XML 87 R69.htm IDEA: XBRL DOCUMENT v3.6.0.2
Property and Equipment - Realized Gain (Losses) on the Disposal of Property and Equipment (Detail) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Property Plant And Equipment [Abstract]      
Realized gain (loss) on disposal $ (31) $ (26) $ (19)