Stockholders' Equity (Cash Dividends Paid) (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2015
Dividends Payable [Line Items]
Total Dividend Paid	$ 1,305
Common Stock [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
Preferred Stock [Member]
Dividends Payable [Line Items]
Total Dividend Paid	1,305
9.50% Series A Preferred Stock [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
9.00% Series B Preferred Stock [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