Income Taxes - Income Tax Provision (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Current tax provision (benefit):
Federal	$ 58,487	$ 62,859	$ 50,780
State	10,455	10,537	9,335
Foreign	1,448	(103)	0
Total current tax provision	70,390	73,293	60,115
Deferred tax provision (benefit):
Federal	5,455	2,529	12,983
State	394	438	1,537
Foreign	(2,136)	(1,907)	0
Total deferred tax provision	3,713	1,060	14,520
Total income tax provision	$ 74,103	$ 74,353	$ 74,635