Annual report pursuant to Section 13 and 15(d)

Employee Benefit Plans - Summary of Status of Company's Restricted Stock Option Activity (Details)

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Employee Benefit Plans - Summary of Status of Company's Restricted Stock Option Activity (Details) - $ / shares
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Shares    
Non-vested RSUs at December 31, 2018 (in shares) 764,201 985,000
Granted (in shares) 584,593 195,938
Vested (in shares) (227,889) (361,737)
Cancelled, expired or forfeited (in shares) (165,894) (55,000)
Non-vested RSUs at September 30, 2019 (in shares) 955,011 764,201
Weighted Average Grant Date Fair Value    
Non-vested RSUs at December 31, 2018 (in dollars per share) $ 2.54 $ 2.26
Granted (in dollars per share) 3.04 2.81
Vested (in dollars per share) 2.64 1.90
Cancelled, expired or forfeited (in dollars per share) 2.73 2.74
Non-vested RSUs at September 30, 2019 (in dollars per share) $ 2.69 $ 2.54