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Shareholders' Equity (Details) - USD ($)
3 Months Ended 6 Months Ended
Jun. 30, 2016
Jun. 30, 2015
Jun. 30, 2016
Jun. 30, 2015
Dec. 31, 2015
Class of Stock [Line Items]          
Own-share Lending Arrangement, Shares, Outstanding 1,459,233   1,459,233   1,459,233
Stock Repurchased and Retired During Period, Value     $ 745,000    
Treasury Stock [Member]          
Class of Stock [Line Items]          
Common stock repurchased (in shares) 123,662 24,498 246,643 46,305  
Aggregate cost of common stock repurchased $ 374,000 $ 68,299 $ 745,000 $ 122,552