Accrued Liabilities (Detail) - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015
Schedule of Accrued Liabilities [Line Items]
Accrued compensation and related costs	$ 4,664	$ 5,198
Accrued professional services	2,808	2,337
Accrued customer costs	923	987
Accrued insurance premiums	220	438
Other accrued expenses	606	893
Total accrued liabilities	$ 9,221	$ 9,853