Income Taxes (Tables)

6 Months Ended

Jun. 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 June 30,				Six months ended June 30,
	2013		2012		2013		2012
Federal statutory tax rate	35.0	%	35.0	%	35.0	%	35.0	%
State income taxes, net of federal benefit	3.3		3.4		2.9		2.7
Change in valuation allowance	(0.3	)	0.5		(0.2	)	(4.2	)
Warrant liability fair value adjustment	—		(6.5	)	—		(1.7	)
Domestic production activities deduction	(2.4	)	(2.5	)	(2.4	)	(2.3	)
Other	0.3		(0.7	)	0.3		0.1
Effective income tax rate	35.9	%	29.2	%	35.6	%	29.6	%

Schedule of deferred tax assets and liabilities

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

	June 30, 2013			December 31, 2012
Current deferred tax assets	$	1,602		$	1,274
Non-current deferred tax assets	14,999			16,045
Non-current deferred tax liabilities	(25,631		)	(751		)
Net deferred tax assets (liabilities)	$	(9,030	)	$	16,568