Income Taxes (Details) (USD $)	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012	Dec. 31, 2012
Income Tax Disclosure [Abstract]
Effective income tax rate, continuing operations	25.00%	83.70%
Gross unrecognized tax benefits, net of interest and penalties	$ 1,000,000		$ 1,500,000
Tax benefit recognized due to expiration of statute of limitations	500,000
Total income tax payments, net of refunds	2,269,000	1,493,000
Less: credits or offsets	385,000	608,000
Cash paid, net	$ 1,884,000	$ 885,000