BASIS OF PRESENTATION (Details) $ in Thousands	9 Months Ended
	Sep. 30, 2021 USD ($) subsidiary		Jun. 30, 2021 USD ($)	Jan. 01, 2021 USD ($)	Dec. 31, 2020 USD ($)
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Number of wholly owned subsidiaries | subsidiary	2
Increase in allowance for credit losses after adoption of ASU 2016-13	$ 73,048	[1]	$ 71,713		$ 61,408
Cumulative period adjustment made to retained earnings	$ (567,518)				(529,005)
Impact of ASC 326 Adoption
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Increase in allowance for credit losses after adoption of ASU 2016-13				$ 9,050
Impact of ASC 326 Adoption | ASU 2016-13
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Increase in allowance for credit losses after adoption of ASU 2016-13				9,100	$ 9,050
As Reported Under ASC 326 | ASU 2016-13
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Cumulative period adjustment made to retained earnings				7,000
Deferred income tax assets, net				$ 2,100

[1] Beginning January 1, 2021 calculation is based on the current expected credit loss methodology. Prior to January 1, 2021 calculation was based on the incurred loss methodology.