VALUATION AND QUALIFYING ACCOUNTS (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2011		Dec. 31, 2010		Dec. 31, 2009
Allowance for Doubtful Accounts [Member]
Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at beginning of period	$ 12,341		$ 10,794		$ 21,089
Charge to expense	3,081		1,842		2,767
Other	(4,595)	[1]	(295)	[1]	(13,062)	[1]
Balance at end of the period	10,827		12,341		10,794
Allowance for Inventory Obsolescence [Member]
Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at beginning of period	11,130		8,551		7,343
Charge to expense	4,996		5,367		3,086
Other	(4,441)	[1]	(2,788)	[1]	(1,878)	[1]
Balance at end of the period	11,685		11,130		8,551
Allowance for Sales Returns [Member]
Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at beginning of period	14,208		13,959		15,190
Charge to expense	18,942		16,447		17,283
Other	(17,541)	[1]	(16,198)	[1]	(18,514)	[1]
Balance at end of the period	15,609		14,208		13,959
Valuation Allowance Deferred Tax Assets [Member]
Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at beginning of period	42,140		32,438		25,746
Charge to expense	18,529		6,892		4,482
Other	2,744	[1]	2,810	[1]	2,210	[1]
Balance at end of the period	$ 63,413		$ 42,140		$ 32,438

[1] Other includes hedged equity and absolute return strategies, and private equity. The Company has procedures to closely monitor the performance of these investments and compares asset valuations to audited financial statements of the funds.