VALUATION AND QUALIFYING ACCOUNTS (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
BEGINNING BALANCE	$ 2,286	$ 2,206
Add - Additions charged to earnings	4,611	4,481
Deduct - Charges for purposes for which reserves were established	(4,488)	(4,401)
ENDING BALANCE	2,409	2,286
Sales Returns and Allowances [Member]
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
BEGINNING BALANCE	951	871
Add - Additions charged to earnings	122	311
Deduct - Charges for purposes for which reserves were established	(87)	(231)
ENDING BALANCE	986	951
SEC Schedule, 12-09, Allowance, Credit Loss [Member]
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
BEGINNING BALANCE	1,335	1,335
Add - Additions charged to earnings	4,489	4,170
Deduct - Charges for purposes for which reserves were established	(4,401)	(4,170)
ENDING BALANCE	$ 1,423	$ 1,335