Income Taxes	6 Months Ended
Jun. 30, 2013
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes The effective income tax rate was 36.1% for the six months ended June 30, 2013. The effective income tax rate for the 2013 period was above the U.S. federal statutory rate of 35.0% primarily due to state income taxes, partially offset by the domestic manufacturing deduction. The effective income tax rate was 34.7% for the six months ended June 30, 2012. The effective income tax rate for the 2012 period was below the U.S. federal statutory rate of 35.0% primarily due to state tax credits and the domestic manufacturing deduction, mostly offset by state income taxes. There was no material change to the total gross unrecognized tax benefits for the six months ended June 30, 2013. Management anticipates reductions to the total amount of unrecognized tax benefits of an additional $621 within the next twelve months due to expiring statutes of limitations. The Company recognizes penalties and interest accrued related to unrecognized tax benefits in income tax expense. As of June 30, 2013, the Company had no material accrued interest and penalties related to uncertain tax positions. The Company files income tax returns in the U.S. federal jurisdiction, various states and foreign jurisdictions. The Company is no longer subject to examinations by tax authorities before the year 2007.

Income Taxes

6 Months Ended

Jun. 30, 2013

The effective income tax rate was 36.1% for the six months ended June 30, 2013. The effective income tax rate for the 2013 period was above the U.S. federal statutory rate of 35.0% primarily due to state income taxes, partially offset by the domestic manufacturing deduction. The effective income tax rate was 34.7% for the six months ended June 30, 2012. The effective income tax rate for the 2012 period was below the U.S. federal statutory rate of 35.0% primarily due to state tax credits and the domestic manufacturing deduction, mostly offset by state income taxes.

There was no material change to the total gross unrecognized tax benefits for the six months ended June 30, 2013. Management anticipates reductions to the total amount of unrecognized tax benefits of an additional $621 within the next twelve months due to expiring statutes of limitations.

The Company recognizes penalties and interest accrued related to unrecognized tax benefits in income tax expense. As of June 30, 2013, the Company had no material accrued interest and penalties related to uncertain tax positions.

The Company files income tax returns in the U.S. federal jurisdiction, various states and foreign jurisdictions. The Company is no longer subject to examinations by tax authorities before the year 2007.