Income Taxes - Schedule of Income Tax Reconciliation (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Income Tax Disclosure [Abstract]
Pre-tax income from continuing operations		$ 10,008	$ 13,375	$ 912
Federal tax expense, at statutory rates		3,503	4,681	318
State tax expense (benefit), net of federal tax effects		1,748	(173)	237
Permanent non-deductible expenses		241	97	65
Tax effect of uncertain tax position		86	152	55
Impact of equity investment income at statutory tax rate		575	476	697
Increases in prior year tax				324
Reduction in gross deferred tax assets due to IRC Section 382 limitations		227	396
Employment credits		(276)
(Decrease) increase in valuation allowance			(86,533)	8,632
Total income tax expense (benefit)	$ 80,790	$ 6,104	$ (80,904)	$ 10,328