Preferred Shares Preferred Shares (Details) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Apr. 10, 2013	Mar. 15, 2007
Preferred Shares [Abstract]
Preferred Stock, Shares Authorized	2,000,000	2,000,000
Preferred Stock, Par or Stated Value Per Share	$ 0.01	$ 0.01
Shares, Issued					4,000,000
Preferred Stock, Shares Issued	2,000	2,000			4,000
Preferred shares redeemed				2,000
Preferred Stock, Shares Outstanding	2,000
Payments for Repurchase of Redeemable Preferred Stock	$ 0	$ (50,352,000)	$ 0
Preferred Stock, Liquidation Preference, Value	50,000,000
Preferred Stock Dividends	$ 4,875,000	$ 3,656,000	$ 0