Annual report pursuant to Section 13 and 15(d)

Rent Expense under Operating Leases (Detail)

v3.3.1.900
Rent Expense under Operating Leases (Detail) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Schedule of Rent Expense [Line Items]      
Rent expense $ 2,026 $ 953 $ 577
Less sublease rentals     (47)
Total rent expense $ 2,026 $ 953 $ 530