SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Cash flow reporting (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2020	Mar. 31, 2019
Supplemental disclosures of cash flow information:
Cash paid for interest	$ 3,944	$ 3,599
Supplemental disclosures of non-cash flow information:
Dividends accrued		13,208
Operating lease right-to-use asset obtained in exchange for lease liabilities	$ 5	1,268
Repossessed real estate and other assets		$ 41

The value of accrued dividends related to restricted stock awards.

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Amount of cash paid for interest, excluding capitalized interest, classified as operating activity. Includes, but is not limited to, payment to settle zero-coupon bond for accreted interest of debt discount and debt instrument with insignificant coupon interest rate in relation to effective interest rate of borrowing attributable to accreted interest of debt discount.

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- Definition

Amount of increase in right-of-use asset obtained in exchange for operating lease liability.

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Value transferred from mortgage loans to real estate owned (REO) in noncash transactions.

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