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Shareholders' Equity and Debt (Shareholders' Equity) (Details) - USD ($)
6 Months Ended
Jun. 30, 2017
Jun. 30, 2016
Jan. 31, 2016
Jan. 31, 2015
Jan. 31, 2013
Apr. 30, 2012
Jan. 31, 2011
May 13, 2010
Shareholders' Equity (Textual) [Abstract]                
Repurchase outstanding common shares     $ 10,000,000.0 $ 10,000,000.0 $ 10,000,000.0 $ 10,000,000.0 $ 10,000,000.0 $ 10,000,000.0
Repurchase of shares, value $ (1,790,671)              
Restricted Stock                
Shareholders' Equity (Textual) [Abstract]                
Restricted stock granted in period, shares 232,650              
Director | Restricted Stock                
Shareholders' Equity (Textual) [Abstract]                
Restricted stock awards, vesting period 1 year              
Common stock                
Shareholders' Equity (Textual) [Abstract]                
Repurchase of shares (in shares) 282,856 366,740            
Repurchase of shares, value $ (1,790,671) $ 1,700,000