RELATED PARTY TRANSACTIONS - Schedule of Revenue Earned From Related Parties (Detail) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2020	Dec. 31, 2019
Related Party Transaction [Line Items]
Revenue	$ 28,726	$ 25,317
Related party
Related Party Transaction [Line Items]
Revenue	22,763	20,562
Related party \| Asset management
Related Party Transaction [Line Items]
Revenue	21,818	19,370
Related party \| Real estate services
Related Party Transaction [Line Items]
Revenue	$ 945	$ 1,192

Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

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+ Details