Deferred Tax Assets and Liabilities Recognized in Company's Consolidated Balance Sheets (Detail) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Income Tax Disclosure [Abstract]
Deferred tax asset — other current assets	$ 0	$ 39,305
Deferred tax asset — other noncurrent assets	3,446	3,080
Total deferred tax assets	3,446	42,385
Deferred tax liability — accrued expenses	0	(57)
Noncurrent deferred tax liability — deferred income taxes	(110,483)	(130,368)
Total deferred tax liabilities	(110,483)	(130,425)
Net deferred tax liabilities	$ (107,037)	$ (88,040)