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Capital Stock (Details)
 12 Months Ended
Dec. 31, 2019
USD ($)
item
$ / shares
shares
Dec. 31, 2017
USD ($)
shares
Dec. 31, 2018
$ / shares
shares
Apr. 27, 2017
USD ($)
Capital Stock        
Common stock, shares authorized 31,500,000   31,500,000  
Common stock, par value (in dollars per share) | $ / shares $ 0.0001   $ 0.0001  
Purchases of treasury stock | $   $ 1,818,541    
Preferred Stock        
Capital Stock        
Preferred stock, shares authorized 3,500,000      
Number of voting right on each preferred stock | item 1      
Dividend on each share of Preferred Stock (in dollars per share) | $ / shares $ 0.06429      
Amount per preferred stock to be paid in the event of liquidation, dissolution, or winding up (in dollars per share) | $ $ 1.07143      
Conversion price (in dollars per share) | $ / shares $ 1.07143      
Series A Preferred Stock        
Capital Stock        
Preferred stock, shares authorized 800,000      
Preferred stock, par value (in dollars per share) | $ / shares $ 0.0001      
Preferred stock, shares issued 0      
Preferred stock, shares outstanding 0      
Maximum        
Capital Stock        
Repurchase of the stock | $       $ 8,000,000
Common Stock        
Capital Stock        
Common stock, shares authorized 31,500,000      
Common stock, par value (in dollars per share) | $ / shares $ 0.0001      
Number of voting right on each common stock | item 1      
Purchases of treasury stock | $   $ 1,818,541    
Purchase and retirement of treasury stock   209,922