Provision Benefit for Income Taxes from Continuing Operations (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Current provision (benefit)
Federal	$ (11)	$ (69)	$ (340)
State	34	63	16
Foreign		2
Deferred provision
Federal	874	4,139	1,884
State
Tax expense (benefit) of equity adjustment for stock option exercises and restricted stock vesting	(76)	(4,227)	824
Valuation allowance	651	16,400
Other	283	258	127
Total income tax expense	$ 1,755	$ 16,566	$ 2,511