VALUATION AND QUALIFYING ACCOUNTS (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
ASC 326
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Other	$ 1,800
Allowance for doubtful accounts
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at beginning of period	1,719	$ 7,337	$ 7,919
Charge to expense	1,628	309	579
Other	1,793	(5,927)	(1,161)
Balance at end of the period	5,140	1,719	7,337
Allowance for sales returns
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at beginning of period	11,249	11,343	11,370
Charge to expense	3,199	7,278	8,372
Other	(4,780)	(7,372)	(8,399)
Balance at end of the period	9,668	11,249	11,343
Valuation allowance deferred tax assets
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at beginning of period	9,102	8,389	16,057
Charge to expense	391	859	(4,882)
Other	777	(146)	(2,786)
Balance at end of the period	$ 10,270	$ 9,102	$ 8,389