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Significant Accounting Policies - EPS (Details) - $ / shares
 3 Months Ended 9 Months Ended
Sep. 30, 2016
Sep. 30, 2015
Sep. 30, 2016
Sep. 30, 2015
Dec. 31, 2015
Schedule of reconciliation of shares used to calculate basic and diluted earnings per share          
Weighted average shares outstanding used to compute basic earnings per share 10,616,000 10,593,000 10,608,000 10,586,000  
Unvested restricted stock 212,000 143,000 195,000 140,000  
Shares used to compute diluted earnings per share 10,828,000 10,736,000 10,803,000 10,726,000  
Common stock, shares authorized 20,000,000   20,000,000   20,000,000
Common stock, par value $ 0.01   $ 0.01   $ 0.01
Common stock, shares issued 11,093,958   11,093,958   11,027,177
Common stock, shares outstanding 11,093,958   11,093,958   11,027,177
Preferred stock, shares authorized 8,000,000   8,000,000   8,000,000
Preferred stock, shares issued 0   0   0
Preferred stock, shares outstanding 0   0   0