Income Taxes (Tables)

9 Months Ended

Sep. 30, 2013

Income Tax Disclosure [Abstract]

Reconciliation of effective tax rate to the U.S. federal statutory tax rate

A reconciliation of the effective tax rate to the U.S. federal statutory tax rate is as follows:

	Three months ended September 30,				Nine months ended September 30,
	2013		2012		2013		2012
Federal statutory tax rate	35.0	%	35.0	%	35.0	%	35.0	%
State income taxes, net of federal benefit	3.6		1.1		3.2		2.1
Change in valuation allowance	0.2		(6.9	)	(0.1	)	(5.1	)
Warrant liability fair value adjustment	—		(2.3	)	—		(1.9	)
Domestic production activities deduction	(2.3	)	(2.8	)	(2.4	)	(2.5	)
Other	2.1		(1.0	)	1.0		(0.3	)
Effective income tax rate	38.6	%	23.1	%	36.7	%	27.3	%

Schedule of deferred tax assets and liabilities

Deferred taxes are presented in the balance sheets as follows (in thousands):

	September 30, 2013			December 31, 2012
Current deferred tax assets	$	1,591		$	1,274
Non-current deferred tax assets	14,763			16,045
Non-current deferred tax liabilities	(25,491		)	(751		)
Net deferred tax assets (liabilities)	$	(9,137	)	$	16,568