Income Taxes (Tables)

6 Months Ended

Jun. 30, 2014

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,
	2014		2013		2014		2013
Federal statutory tax rate	35.0	%	35.0	%	35.0	%	35.0	%
State income taxes, net of federal benefit	2.2		3.3		2.2		2.9
Change in valuation allowance	—		(0.3	)	—		(0.2	)
Domestic production activities deduction	(2.7	)	(2.4	)	(2.7	)	(2.4	)
Other	0.6		0.3		0.4		0.3
Effective income tax rate	35.1	%	35.9	%	34.9	%	35.6	%

Schedule of deferred tax assets and liabilities

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

	June 30, 2014			December 31, 2013
Current deferred tax assets	$	2,578		$	2,522
Non-current deferred tax assets	15,050			15,012
Non-current deferred tax liabilities	(27,223		)	(27,575		)
Net deferred tax assets (liabilities)	$	(9,595	)	$	(10,041	)