Deferred Tax Adjustment - Second Quarter 2012 Restatement - Additional Information (Detail) (USD $)	3 Months Ended				9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012		Mar. 31, 2012	Sep. 30, 2013	Sep. 30, 2012
Adjusted Earnings Before Interest Taxes Depreciation And Amortization And Other Non Cash Items [Abstract]
Period of deferred tax liability adjustment amortization				12 years
Deferred tax liability		$ 0.0				$ 0.0
Net loss	(12,937,000)	11,437,000	[1]		(24,981,000)	(1,639,000)	[1]
Deferred tax benefit			[1]			$ (2,500,000)	[1]

[1] Restated