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Share-Based Payments (Tables)
 12 Months Ended
Dec. 31, 2021
Share-based Payment Arrangement, Noncash Expense [Abstract]  
Summary of restricted common stock vesting dates The following is a summary of restricted stock units vesting dates as of December 31, 2021 and December 31, 2020:
 December 31, 2021December 31, 2020
Vesting DateShares VestingShares Vesting
March 2021— 36,000 
June 2021— 130,365 
March 202236,000 36,000 
June 202281,160 — 
117,160 202,365 
Schedule of shares issued under the company’s equity incentive plans The following table presents information with respect to the Company's restricted stock units for the years ended December 31, 2021 and December 31, 2020:
December 31, 2021December 31, 2020
 Restricted Stock Units
Weighted Average
Grant Date Fair
Value(1)

Restricted Stock Units
Weighted Average
Grant Date Fair
Value(1)
Outstanding at beginning of period1,025,542 $14.10 894,289 $15.76 
Granted(2)
148,138 5.07 131,253 2.79 
Cancelled/forfeited(25,455)2.75 — — 
Outstanding at end of period1,148,225 $13.19 1,025,542 $14.10 
Unvested at end of period117,160 $5.62 202,365 $5.50 

(1)The grant date fair value of restricted stock unit awards is based on the closing market price of the Company's common stock at the grant date.
(2)Includes 66,978 shares and 3,978 restricted stock units attributed to dividends on restricted stock units for the years ended December 31, 2021 and December 31, 2020, respectively.