Preferred Stock (Series B Preferred Stock) (Narrative) (Details) - Series B Preferred Stock [Member] - USD ($) $ / shares in Units, $ in Thousands		9 Months Ended	12 Months Ended
	Apr. 15, 2016	Sep. 30, 2016	Dec. 31, 2015
Class of Stock [Line Items]
Preferred stock, shares outstanding	332,500		332,500
Preferred stock, annual dividend rate		10.00%	10.00%
Preferred stock, liquidation preference per share		$ 25.00
Preferred stock, fixed annual amount of dividend per share		$ 2.50
Dividends unpaid and accrued			$ 1,870
Dividends unpaid and accrued per share	$ 6.354167		$ 5.625
Redemption liability	$ 10,425
Change in value of preferred stock		$ 2,781
Change in net earnings available to common shareholders		$ (911)
Preferred stock, redemption price	$ 25.00	$ 25.00