Preferred Stock (Series A Preferred Stock) (Narrative) (Details) - Series A Preferred Stock [Member] - USD ($) $ / shares in Units, $ in Thousands			3 Months Ended	12 Months Ended
	Apr. 15, 2016	Dec. 30, 2005	Mar. 31, 2016	Dec. 31, 2015
Class of Stock [Line Items]
Preferred stock, shares sold		1,521,258
Preferred stock, annual dividend rate		8.00%	8.00%	8.00%
Preferred stock, shares outstanding	803,270		803,270
Preferred stock, liquidation preference per share			$ 10.00
Preferred stock, fixed annual amount of dividend per share			0.80
Preferred stock, redemption price	$ 10.00		$ 10.00
Dividends unpaid and accrued			$ 1,642	$ 1,452
Dividends unpaid and accrued per share	2.084940		$ 2.045	$ 1.807
Redemption liability			$ 9,675
Change in value of preferred stock			2,288
Change in net earnings available to common shareholders			$ 836
Subsequent Event [Member]
Class of Stock [Line Items]
Preferred stock, liquidation preference per share	10.00
Preferred stock, redemption price	$ 12.085