VALUATION AND QUALIFYING ACCOUNTS (Details) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Allowance for Doubtful Accounts [Member]
Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at beginning of period		$ 7,337	$ 7,919	$ 6,952
Charge to expense		309	579	1,388
Other	[1]	(5,927)	(1,161)	(421)
Balance at end of the period		1,719	7,337	7,919
Allowance for Sales Returns [Member]
Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at beginning of period		11,343	11,370	13,714
Charge to expense		7,278	8,372	8,909
Other	[1]	(7,372)	(8,399)	(11,253)
Balance at end of the period		11,249	11,343	11,370
Valuation Allowance Deferred Tax Assets [Member]
Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at beginning of period		8,389	16,057	22,821
Charge to expense			(4,882)	(3,552)
Other	[1]	146	(2,786)	(3,212)
Balance at end of the period		$ 9,102	$ 8,389	$ 16,057

[1] Amounts sold, written off, or recovered, and the effect of changes in currency translation rates, are included in Column D.