Stock-Based Compensation, Common Stock Repurchases and Dividends Schedule of Quarterly Dividends (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	2 Months Ended	3 Months Ended								12 Months Ended
	Sep. 15, 2011	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2011	Sep. 30, 2011	Jun. 30, 2011	Mar. 31, 2011	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Dividend Per Share	$ 0.1	$ 0	$ 0.17	$ 0.17	$ 0.17	$ 0.17	$ 0.1	$ 0.1	$ 0	$ 0.51	$ 0.47
Total Dividends Paid (value)	$ 937	$ 0	$ 1,712	$ 1,730	$ 1,738	$ 1,749	$ 959	$ 950	$ 0	$ 5,180	$ 4,595	$ 0