Stock-Based Compensation (Tables)

9 Months Ended

Sep. 30, 2021

Share-based Payment Arrangement [Abstract]

Summary of restricted stock unit activity

The following table summarizes the Company’s non-vested share awards granted under the PIPP:

	Nine Months Ended September 30, 2021
Non-vested at beginning of year(1)	545,696
Impact of fluctuations in share price	47,196
Granted	922,653
Canceled/forfeited(1)	(214,959)
Vested	(191,413)
Non-vested at end of period	1,109,173

(1)Amounts include liability-based awards for which the number of units awarded is not determined until the vesting date. The number of liability-based award units included in this amount are estimated using the market value of the Company's common shares as of September 30, 2021.