GENERAL - Reconciliation of Company's Weighted-average Number of Outstanding Common Shares and Common Limited Partner Units (Parenthetical) (Detail) - shares	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Earnings Per Share Diluted [Line Items]
Shares and units excluded from the calculation of diluted weighted-average number of outstanding common shares limited partner units, because of their anti-dilutive effect		563,183		563,183
Stock options
Earnings Per Share Diluted [Line Items]
Shares and units excluded from the calculation of diluted weighted-average number of outstanding common shares limited partner units, because of their anti-dilutive effect	4,343,201		3,667,425
Restricted shares
Earnings Per Share Diluted [Line Items]
Shares and units excluded from the calculation of diluted weighted-average number of outstanding common shares limited partner units, because of their anti-dilutive effect			375,000