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Shareholders' Equity, Restricted Shares (Details) - Restricted Stock [Member] - USD ($)
3 Months Ended 12 Months Ended
Mar. 31, 2017
Mar. 31, 2016
Dec. 31, 2016
Restricted shares and warrants, number of shares [Roll Forward]      
Balance, beginning of period (in shares) 992,548    
Shares granted (in shares) 0    
Shares vested (in shares) (402,147)    
Shares surrendered (in shares) 0    
Balance, end of period (in shares) 590,401   992,548
Restricted shares, weighted average grant date fair value [Roll Forward]      
Balance, beginning of period (in dollars per share) $ 1.30    
Shares granted (in dollars per share) 0    
Shares vested (in dollars per share) 1.10    
Shares surrendered (in dollars per share) 0    
Balance, end of period (in dollars per share) $ 1.44   $ 1.30
Restricted shares and warrants, additional disclosures [Abstract]      
Weighted average remaining life in years, Balance 1 year 7 months 17 days   1 year 4 months 6 days
Aggregate intrinsic value, Balance $ 1,995,021    
Shares vested, Aggregate intrinsic value 723,865    
Aggregate intrinsic value, Balance 1,062,722   $ 1,995,021
Unrecognized share-based compensation expense $ 479,000    
Unrecognized compensation expense, weighted average period of recognition   1 year 7 months 17 days  
Minimum [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Vesting period 6 months    
Maximum [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Vesting period 1 year