Long-term Debt - Fair Value of Debt Instruments (Detail) - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015
Debt Instrument [Line Items]
Fair value of debt instruments	$ 95,581	$ 98,513
2014 term loan facility [Member]
Debt Instrument [Line Items]
Fair value of debt instruments	95,068	98,044
Capital lease obligations [Member]
Debt Instrument [Line Items]
Fair value of debt instruments	226	469
Other obligations [Member]
Debt Instrument [Line Items]
Fair value of debt instruments	287	0
Revolver borrowings [Member]
Debt Instrument [Line Items]
Fair value of debt instruments	$ 0	$ 0