INVESTMENT IN EQUITY SECURITIES (Details) - USD ($) $ / shares in Units, $ in Thousands, shares in Millions		3 Months Ended								12 Months Ended
	Feb. 17, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Jan. 01, 2018	Jan. 01, 2017
Marketable Securities [Line Items]
Investment in equity securities		$ 42,618				$ 36,181				$ 42,618	$ 36,181
Unrealized gain on investment in equity securities										0	0	$ 2,478
Cumulative effect of an accounting change														$ (10,448)	$ 0
Proceeds received from sale of equity securities										$ 7,994	$ 0	0
Altisource Residential Corporation
Marketable Securities [Line Items]
Number of available for sale shares acquired (in shares)													4.1
Number of securities outstanding (in shares)		3.5				4.1				3.5	4.1
Unrealized gain (loss) on investment in equity securities		$ 2,700	$ (2,300)	$ 11,800	$ 2,200	$ (8,800)	$ 1,800	$ 1,500	$ (7,500)	$ 14,400	$ (13,000)
Unrealized gain on investment in equity securities												2,500
Unrealized gain (loss) from sale										2,000
Investment income, dividend										$ 1,700	$ 2,500	$ 2,500
Investment shares, transfer restrictions, percent (no more than)										25.00%
Number of shares disposed (in shares)										0.7
Proceeds received from sale of equity securities										$ 8,000
Accumulated other comprehensive income (loss)
Marketable Securities [Line Items]
Cumulative effect of an accounting change														(733)
Accumulated other comprehensive income (loss) | Accounting Standards Update 2016-01
Marketable Securities [Line Items]
Cumulative effect of an accounting change														(700)
Retained Earnings
Marketable Securities [Line Items]
Cumulative effect of an accounting change														(9,715)	$ (932)
Retained Earnings | Accounting Standards Update 2016-01
Marketable Securities [Line Items]
Cumulative effect of an accounting change														$ 700
Subsequent Event | Altisource Residential Corporation
Marketable Securities [Line Items]
Price of shares in merger agreement (in dollars per share)	$ 12.50