Accrued Expenses and Other Liabilities - Components of Accrued Liabilities (Detail) - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015
Components of accrued liabilities
Accrued bonuses	$ 2,585	$ 2,939
Accrued commissions	1,601	1,496
Accrued vacation	3,057	2,272
Accrued payroll related liabilities	2,487	2,423
Accrued software expense	1,563	1,284
Accrued contractor fees	778	1,132
Accrued professional service fees	339	1,016
Short-term portion of lease abandonment accrual	146	437
Deferred rent	129	220
Income tax related accruals	507	318
Other accrued expenses	1,450	1,949
Total	$ 14,642	$ 15,486