Stock Buyback Program (Details) (USD $) In Millions, except Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Jun. 30, 2009
Stock Buyback Program [Abstract]
Stock Repurchase Program, Number of Shares Authorized to be Repurchased		1,500,000
Total stock repurchase, shares	3,268,514
Stock Repurchased and Retired During Period, Shares	389,721
Stock Repurchased and Retired During Period, Value	$ 8.8
Total stock repurchase, value	$ 45.8
Weighted Average Price Of Shares Repurchased And Retired	$ 22.72
Repurchase of common stock, value per share	$ 14.01