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STOCK-BASED COMPENSATION - Restricted Stock - Additional Information (Detail) - Omnibus Plan [Member] - Restricted Stock [Member] - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted shares of restricted stock			316,430
Stock-based compensation expense	$ 0.8	$ 0.8	$ 2.6	$ 2.4
Unrecognized compensation cost related to unvested shares	$ 4.0		$ 4.0
Period for cost recognition not yet recognized			1 year 7 months 6 days
Independent directors [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted shares of restricted stock			26,361	53,634
Restricted stock vesting period			1 year	1 year
Management [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted shares of restricted stock			290,069	851,673
Rtirement Eligible Shares			19,271	47,194
Management [Member] | Restricted stock vesting after two-year anniversary of the grant date [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted stock vesting percentage			50.00%	50.00%
Management [Member] | Restricted stock vesting after three-year anniversary of the grant date [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted stock vesting percentage			50.00%	50.00%

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Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

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Weighted-average period over which cost not yet recognized is expected to be recognized for award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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