Accrued Expenses and Other Liabilities - Components of Accrued Liabilities (Detail) - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015
Components of accrued liabilities
Accrued bonuses	$ 2,016	$ 2,939
Accrued commissions	1,480	1,496
Accrued vacation	2,828	2,272
Accrued payroll related liabilities	497	2,423
Accrued software expense	741	1,284
Accrued contractor fees	1,144	1,132
Accrued professional service fees	344	1,016
Short-term portion of lease abandonment accrual	291	437
Deferred rent	187	220
Income tax related accruals	408	318
Other accrued expenses	2,212	1,949
Total	$ 12,148	$ 15,486