Preferred Stock (Components Of Dividends Declared And Undeclared And In Kind Dividends Deemed On Preferred Stock) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Dividends Payable [Line Items]
Dividends declared and undeclared and in kind dividends deemed on preferred stock	$ 1,057	$ 902	$ 18,797	$ 1,793
Accrued At Stated Rate [Member] | Series A Preferred Stock [Member]
Dividends Payable [Line Items]
Dividends declared and undeclared and in kind dividends deemed on preferred stock	32	180	222	356
Accrued At Stated Rate [Member] | Series B Preferred Stock [Member]
Dividends Payable [Line Items]
Dividends declared and undeclared and in kind dividends deemed on preferred stock	35	208	243	416
Accrued At Stated Rate [Member] | Series C Preferred Stock [Member]
Dividends Payable [Line Items]
Dividends declared and undeclared and in kind dividends deemed on preferred stock		$ 514	455	$ 1,021
Accrued At Stated Rate [Member] | Series D Preferred Stock [Member]
Dividends Payable [Line Items]
Dividends declared and undeclared and in kind dividends deemed on preferred stock	978		1,138
Deemed Upon Redemption [Member] | Series A Preferred Stock [Member]
Dividends Payable [Line Items]
Dividends declared and undeclared and in kind dividends deemed on preferred stock	6		652
Deemed Upon Redemption [Member] | Series B Preferred Stock [Member]
Dividends Payable [Line Items]
Dividends declared and undeclared and in kind dividends deemed on preferred stock	$ 6		668
Deemed At Exchange [Member] | Series C Preferred Stock [Member]
Dividends Payable [Line Items]
Dividends declared and undeclared and in kind dividends deemed on preferred stock			$ 15,419