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Shareholders' Equity Transactions (Narrative) (Details) - USD ($)
$ / shares in Units, $ in Thousands
1 Months Ended 3 Months Ended
Dec. 21, 2012
Dec. 22, 2016
Mar. 31, 2017
Mar. 31, 2016
Preferred stock dividends     $ 58
Common Stock [Member]        
Stock issued, shares 2,656,294      
Series C Preferred Stock [Member]        
Stock issued, shares 728,706      
Stock sold price per share $ 10.00      
Preferred stock dividends       $ 58
Number of shares exchanged   728,706    
Series C Preferred Stock [Member] | Common Stock [Member]        
Net proceeds from the sale of preferred and common stock $ 33,800