Incentive Plans - Summary of Activity Related to Shares of Restricted Common Stock (Parenthetical) (Detail)	3 Months Ended
Mar. 31, 2021 shares
Restricted Stock [Member]
Share-based compensation arrangement by share-based payment award [Line Items]
Number of dividend participation rights issued	10,571

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

No definition available.

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Balance Type:	na
Period Type:	duration