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Share-Based Compensation (Tables)
 6 Months Ended
Jun. 30, 2021
Share-based Payment Arrangement [Abstract]  
Summary of Stock Option Activity under Plan The following table summarizes stock option activity under the 2012 Plan and 2021 Plan for the six months ended June 30, 2021 and 2020:
For the Six Months Ended
June 30,
 20212020
Options outstanding at beginning of period1,090,300 1,529,800 
Granted— — 
Exercised(114,000)(255,550)
Forfeited— (2,850)
Options outstanding at end of period976,300 1,271,400 
Options exercisable at end of period938,800 1,124,800 
Summary of Restricted Share Units Activity Under Plan The following table summarizes RSU activity under the 2012 Plan and 2021 Plan for the six months ended June 30, 2021 and 2020:
For the Six Months Ended
June 30,
 20212020
RSUs outstanding at beginning of period651,537 599,109 
Awarded568,313 461,279 
Vested(200,939)(206,597)
Forfeited(17,697)(39,995)
RSUs outstanding at end of period1,001,214 813,796 
Summary of Performance Share Units Activity Under Plan The following table summarizes PSU activity under the 2012 Plan and 2021 Plan for the six months ended June 30, 2021 and 2020:
For the Six Months Ended
June 30,
 20212020
PSUs outstanding at beginning of period— — 
Awarded92,319 — 
Vested— — 
Forfeited— — 
PSUs outstanding at end of period92,319 — 
Summary of Activity in Noncash Share-Based Compensation Expense The following table summarizes the activity that relates to the Company’s noncash share-based compensation expense for the three and six months ended June 30, 2021 and 2020 (in thousands):
For the Three Months Ended
June 30,		For the Six Months Ended
June 30,
2021202020212020
General and administrative expense$1,823 $1,649 $6,165 $3,018 
Property management expenses599 441 1,598 880 
Acquisition and other transaction costs729 — 3,498 — 
Total noncash share-based compensation expense$3,151 $2,090 $11,261 $3,898