Preferred Stock (Components Of Dividends Declared And Undeclared And In Kind Dividends Deemed On Preferred Stock) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Dividends Payable [Line Items]
Dividends declared and undeclared and in kind dividends deemed on preferred stock	$ 976	$ 914	$ 19,773	$ 2,707
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		184	222	540
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		208	243	624
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		$ 522	455	$ 1,543
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	$ 976		2,114
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			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			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