Capital Stock (Cash Dividends Paid) (Details) - USD ($) $ / shares in Units, $ in Thousands		12 Months Ended
		Dec. 31, 2015	Dec. 31, 2014
Dividends Payable [Line Items]
Total dividend paid, Common Stock		$ 2,560	$ 7,289
Total dividend paid, Preferred Stock	[1]	$ 3,916	$ 5,221
Declaration Date, January 7, 2015 [Member]
Dividends Payable [Line Items]
Declaration Date		Jan. 07, 2015
Record Date		Feb. 19, 2015
Payment Date		Mar. 04, 2015
Per Share Amount (in dollars per share)		$ 0.25
Total Dividend Paid		$ 1,828
Declaration Date, April 29, 2015 [Member]
Dividends Payable [Line Items]
Declaration Date		Apr. 29, 2015
Record Date		May 15, 2015
Payment Date		Jun. 03, 2015
Per Share Amount (in dollars per share)		$ 0.05
Total Dividend Paid		$ 366
Declaration Date, July 30, 2015 [Member]
Dividends Payable [Line Items]
Declaration Date		Jul. 30, 2015
Record Date		Aug. 14, 2015
Payment Date		Sep. 04, 2015
Per Share Amount (in dollars per share)		$ 0.05
Total Dividend Paid		$ 366
9.50% Series A Preferred Stock [Member] | Declaration Date, January 7, 2015 [Member]
Dividends Payable [Line Items]
Declaration Date		Jan. 07, 2015
Record Date		Jan. 29, 2015
Payment Date		Jan. 30, 2015
Per Share Amount (in dollars per share)		$ 2.375
Total Dividend Paid		$ 594
9.50% Series A Preferred Stock [Member] | Declaration Date, April 2, 2015 [Member]
Dividends Payable [Line Items]
Declaration Date		Apr. 02, 2015
Record Date		Apr. 29, 2015
Payment Date		Apr. 30, 2015
Per Share Amount (in dollars per share)		$ 2.375
Total Dividend Paid		$ 594
9.50% Series A Preferred Stock [Member] | Declaration Date, July 8, 2015 [Member]
Dividends Payable [Line Items]
Declaration Date		Jul. 08, 2015
Record Date		Jul. 29, 2015
Payment Date		Jul. 30, 2015
Per Share Amount (in dollars per share)		$ 2.375
Total Dividend Paid		$ 594
9.00% Series B Preferred Stock [Member] | Declaration Date, January 7, 2015 [Member]
Dividends Payable [Line Items]
Declaration Date		Jan. 07, 2015
Record Date		Jan. 29, 2015
Payment Date		Jan. 30, 2015
Per Share Amount (in dollars per share)		$ 2.250
Total Dividend Paid		$ 711
9.00% Series B Preferred Stock [Member] | Declaration Date, April 2, 2015 [Member]
Dividends Payable [Line Items]
Declaration Date		Apr. 02, 2015
Record Date		Apr. 29, 2015
Payment Date		Apr. 30, 2015
Per Share Amount (in dollars per share)		$ 2.250
Total Dividend Paid		$ 712
9.00% Series B Preferred Stock [Member] | Declaration Date, July 8, 2015 [Member]
Dividends Payable [Line Items]
Declaration Date		Jul. 08, 2015
Record Date		Jul. 29, 2015
Payment Date		Jul. 30, 2015
Per Share Amount (in dollars per share)		$ 2.250
Total Dividend Paid		$ 711

[1] Represents actual cash paid for cumulative preferred stock dividends.