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Stock Incentive Plans (Details 3) - Restricted Stock Units (RSUs) [Member]
$ / shares in Units, $ in Thousands
9 Months Ended
Sep. 30, 2019
USD ($)
$ / shares
shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Non-vested restricted stock units, Beginning balance | shares 50,176
RSUs outstanding, Granted | shares 925
RSUs outstanding, Vested | shares (6,098)
RSUs outstanding, Cancelled | shares
Non-vested restricted stock units, Ending balance | shares 45,003
Weighted average price at time of grant, Beginning balance | $ / shares $ 6.31
Weighted average price at time of grant, Granted | $ / shares 7.95
Weighted average price at time of grant, Vested | $ / shares 7.40
Weighted average price at time of grant, Cancelled | $ / shares
Weighted average price at time of grant, Ending balance | $ / shares $ 6.20
Aggregate intrinsic value, Non-vested, Ending balance | $ $ 279,011