Long-Term Obligations - Schedule of Long-Term Obligations (Detail) - USD ($) $ in Thousands	Jun. 30, 2016	Jan. 29, 2016	Dec. 31, 2015
Debt Instrument [Line Items]
Capital leases and other long-term obligations	$ 3,760		$ 3,996
Long-term obligations	179,501		188,689
Long-term obligations	179,501		188,689
Less current portion	(4,018)		(3,671)
Long-term obligations, net of current portion	175,483		185,018
2015 Senior Secured Credit Facilities Due 2018 [Member]
Debt Instrument [Line Items]
Long-term obligations	88,250		89,750
Debt issuance costs	(2,584)		(3,406)
6.25% Convertible Notes Due 2018 [Member]
Debt Instrument [Line Items]
Convertible notes	94,000		104,000
Debt instrument unamortized discount	(3,240)	$ (250)	(4,641)
Debt issuance costs	(685)		$ (1,010)
Long-term obligations	90,760
Long-term obligations	$ 90,760