Income Taxes (Details) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012	Dec. 31, 2012
Income Tax Disclosure [Abstract]
Effective income tax rate, continuing operations			25.00%	30.40%
Gross unrecognized tax benefits, net of interest and penalties	$ 1,000,000		$ 1,000,000		$ 1,500,000
Tax benefit recognized due to expiration of statute of limitations	0		500,000
Income tax expense (benefit), intraperiod tax allocation	0	0	0	(4,200,000)
Total income tax payments, net of refunds	2,715,000	1,366,000	12,254,000	3,981,000
Less: credits or offsets	435,000	491,000	2,159,000	1,915,000
Cash paid, net	$ 2,280,000	$ 875,000	$ 10,095,000	$ 2,066,000