Annual report pursuant to Section 13 and 15(d)

Stock-Based Compensation - Disclosure of Share-based Compensation Arrangements by Share-based Payment Award (Details)

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Stock-Based Compensation - Disclosure of Share-based Compensation Arrangements by Share-based Payment Award (Details) - Restricted Shares [Member] - shares
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Common Stock [Member]    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Outstanding and unvested at beginning 929,347 605,969
Granted 180,000 707,200
Vested (624,315) (340,066)
Forfeited (33,948) (43,756)
Outstanding and unvested at ending 451,084 929,347
Preferred Stock [Member]    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Outstanding and unvested at beginning 44,800 39,800
Granted 48,746 44,800
Vested (49,546) (39,800)
Forfeited
Outstanding and unvested at ending 44,000 44,800