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Stock-Based Compensation (Details)
6 Months Ended
Jun. 30, 2016
USD ($)
$ / shares
shares
Number of Shares  
Outstanding - beginning of period | shares 307,750
Forfeited | shares (58,000)
Expired | shares (8,000)
Outstanding - end of period | shares 241,750
Exercisable - end of period | shares 202,250
Weighted Average Exercise Price  
Outstanding - beginning of period | $ / shares $ 5.96
Forfeited | $ / shares 5.26
Expired | $ / shares 12.50
Outstanding - end of period | $ / shares 5.91
Exercisable - end of period | $ / shares $ 6.07
Weighted Average Remaining Contractual Term  
Outstanding 5 years 7 months
Options exercisable 5 years 3 months
Aggregate Intrinsic Value  
Outstanding - beginning of period | $ $ 46