Commitments and Contingencies - Minimum Fixed Commitments Related to All Non-Cancellable Leases (Detail) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Operating Leases
For the remaining six months ending December 31, 2017	$ 1,468
2018	3,408
2019	1,466
2020	109
2021	93
Total minimum lease payments	6,544
Capital Leases
For the remaining six months ending December 31, 2017	284
2018	529
2019	402
2020	21
2021	7
Total minimum lease payments	1,243
Less: amount representing interest	(162)
Present value of minimum lease payments	1,081
Less: current obligation	(448)	$ (471)
Long-term obligations under capital lease	$ 633	$ 865