ALLOWANCE FOR DOUBTFUL ACCOUNTS (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Balance, beginning of the period	$ 2,021	$ 1,370	$ 1,466	$ 1,143
Bad debt expense	69	772	949	1,282
Write-off of uncollectible accounts receivable	(337)	(473)	(669)	(761)
Recoveries collected	3	7	10	12
Balance, end of the period	$ 1,756	$ 1,676	$ 1,756	$ 1,676