Stockholders' Equity (Narrative) (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock Repurchase Program, Number of Shares Authorized to be Repurchased (in shares)	6,000,000
Payments for Repurchase of Common Stock	$ 63,585,000	$ 850,000	$ 926,000
Stock Repurchased and Retired During Period, Shares	2,000,000
Shares Repurchased And Retired, Shares	14,000	22,000	25,000
Shares Repurchased And Retired	486,000	900,000	926,000
Repurchase plan authorized in Oct 2008 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Payments for Repurchase of Common Stock	$ 63,100,000