SCHEDULE II VALUATION AND QUALIFYING ACCOUNTS (Details) (USD $)	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Valuation and Qualifying Accounts Disclosure [Line Items]
Deferred Tax Asset Decrease	$ 14,800,000
Movement in Valuation Allowances and Reserves [Roll Forward]
Deferred Tax Asset Increase	an increase of $7.9 million related to current year US tax loss carryforwards and credits, and an increase of $5.1 million related to foreign tax loss carryforwards and credits
Valuation Allowances and Reserves [Domain]
Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at beginning of period	217,897,000	207,209,000	203,473,000
Additions Charged to costs and expenses	(1,830,000)	11,025,000	967,000
Additions Charged to other accounts	0	(337,000)	2,769,000
Deductions	(750,000)	0	0
Balance at end of period	215,317,000	217,897,000	207,209,000
Allowance for Doubtful Accounts [Member]
Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at beginning of period	3,051,000	3,219,000	3,504,000
Additions Charged to costs and expenses	1,790,000	489,000	1,359,000
Additions Charged to other accounts	0	0	0
Deductions	(2,499,000)	(657,000)	(1,644,000)
Balance at end of period	2,342,000	3,051,000	3,219,000
Sales Returns and Allowances [Member]
Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at beginning of period	14,098,000	13,128,000	19,678,000
Additions Charged to costs and expenses	0	0	0
Additions Charged to other accounts	28,197,000	22,968,000	21,232,000
Deductions	(28,652,000)	(21,998,000)	(27,782,000)
Balance at end of period	13,643,000	14,098,000	13,128,000
Allowance for Transactions with Recourse [Member]
Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at beginning of period	459,000	1,256,000	784,000
Additions Charged to costs and expenses	(229,000)	(295,000)	571,000
Additions Charged to other accounts	(229,000)	(299,000)	571,000
Deductions	93,000	(203,000)	(670,000)
Balance at end of period	$ 94,000	$ 459,000	$ 1,256,000