Variations From Federal Statutory Rate (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Reconciliation Of Income Taxes [Line Items]
Expected federal income tax expense (benefit) at statutory rate of 34%	$ (3,882)	$ (13,086)	$ (836)
Effect of permanent goodwill impairment		7,898
Effect of permanent acquisition-related differences			461
Effect of permanent other differences	136	94	30
Effect of carryforward state net operating losses			(72)
Effect of valuation allowance	4,559	16,074
Other	(48)	49	(3)
State income tax expense (benefit), net of federal benefit	(707)	(2,309)	(140)
Income tax expense (benefit)	$ 58	$ 8,720	$ (560)