Stockholders' Equity (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Feb. 10, 2012	Sep. 30, 2001
Share Repurchases [Abstract]
Stock Repurchase Shares Authorized	3,225			5,000	15,400
Share repurchase authorization increase		3,225		2,757
Treasury Stock, Shares, Acquired	0	1,775	4,214
Repurchases of Common Stock	$ 0	$ 24,190	$ 56,350