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REAL ESTATE - Additional Information (Details)	3 Months Ended		9 Months Ended
	Sep. 30, 2020 USD ($)	Sep. 30, 2019 USD ($)	Sep. 30, 2020 USD ($) property	Sep. 30, 2019 USD ($) property	Dec. 31, 2019 USD ($)
Real Estate Properties [Line Items]
Real estate acquired in settlement of residential mortgage loans	$ 0		$ 0		$ 0
Number of commercial real estate acquisitions, foreclosure | property			2
Foreclosure agreement, amount	79,800,000		$ 79,800,000
Number of commercial real estate acquisitions | property				0
Number of real estate properties sold | property			0	1
Proceeds from sales of real estate				$ 6,700,000
Recognized gain on sale of real estate				2,700,000
Weighted average amortization period (in years)			6 years
General and Administrative Expense
Real Estate Properties [Line Items]
Depreciation expense	$ 6,200,000	$ 6,000,000.0	$ 17,400,000	$ 17,800,000

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Number Of Real Estate Properties Acquired, Foreclosure

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Number Of Real Estate Properties Sold

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The amount of expense recognized in the current period that reflects the allocation of the cost of tangible assets over the assets' useful lives. Includes production and non-production related depreciation.

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The net gain (loss) resulting from sales and other disposals of real estate owned for investment purposes.

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Recorded investment of consumer mortgage loan receivables secured by residential real estate properties for which formal foreclosure proceedings are in process.

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Cash received for the sale of real estate that is not part of an investing activity during the current period.

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Carrying amount as of the balance sheet date of land and buildings obtained through foreclosure proceedings or defeasance in full or partial satisfaction of a debt arrangement.

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