ALLOWANCE FOR CREDIT LOSSES (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Accounts, Notes, Loans and Financing Receivable [Line Items]
Beginning Balance	$ 19,101	$ 14,914	$ 20,085	$ 19,658
Adoption of ASC 326				(3,330)
Provision for expected credit losses	1,987	7,481	4,673	9,768
Write-offs charged against the allowance	(4,295)	(5,047)	(9,075)	(9,466)
Recoveries collected	1,411	2,118	2,521	2,836
Ending Balance	18,204	19,466	18,204	19,466
Trade Accounts Receivable [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Beginning Balance	15,731	11,861	16,854	16,699
Adoption of ASC 326				(3,330)
Provision for expected credit losses	369	6,927	2,234	8,480
Write-offs charged against the allowance	(3,650)	(4,454)	(7,749)	(8,233)
Recoveries collected	1,413	2,118	2,524	2,836
Ending Balance	13,863	16,452	13,863	16,452
Financing Receivable [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Beginning Balance	3,370	3,053	3,231	2,959
Adoption of ASC 326
Provision for expected credit losses	1,618	554	2,439	1,288
Write-offs charged against the allowance	(645)	(593)	(1,326)	(1,233)
Recoveries collected	(2)		(3)
Ending Balance	$ 4,341	$ 3,014	$ 4,341	$ 3,014