Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented.

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Additional shares included in the calculation of diluted EPS as a result of the potentially dilutive effect of share based payment arrangements using the treasury stock method.

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Earning Per Share - Additional Information (Detail) - shares	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Incremental shares included in calculation of diluted EPS	14,708,389	14,444,326		14,421,393
Stock Options
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Shares excluded from calculation of diluted earnings per share	540,000	572,957	540,000	572,957
Restricted Stock Diluted
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Non-vested restricted stock and options	11,974	18,218		15,366
Restricted Stock Units Diluted
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Non-vested restricted stock and options	151,538	48,846		36,796
Stock Options Diluted
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Non-vested restricted stock and options	99,442	72,836		92,637