Amount of current federal tax expense (benefit) pertaining to income (loss) from continuing operations.

Amount of current income tax expense (benefit) pertaining to taxable income (loss) from continuing operations.

Amount of current state and local tax expense (benefit) pertaining to income (loss) from continuing operations.

Amount of deferred federal income tax expense (benefit) pertaining to income (loss) from continuing operations.

Amount of deferred income tax expense (benefit) pertaining to income (loss) from continuing operations.

Amount of deferred state and local tax expense (benefit) pertaining to income (loss) from continuing operations.

Components of Income Tax Expense (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Current tax expense:
Federal									$ 12,819	$ 13,733	$ 7,101
State									1,743	1,291	110
Total current tax expense									14,562	15,024	7,211
Deferred tax (benefit) expense:
Federal									(3,136)	(1,501)	1,650
State									(518)	605	712
Total deferred tax (benefit) expense									(3,654)	(896)	2,362
Total income tax expense	$ 2,436	$ 2,539	$ 2,537	$ 3,396	$ 3,957	$ 5,322	$ 1,997	$ 2,852	$ 10,908	$ 14,128	$ 9,573