ORGANIZATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details) (USD $)	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Stock Split
Stock split ratio	2
Common stock dividend (as a percent)	100.00%
Reclassifications and adjustments
Accounts receivable	$ 218,072,000	$ 166,041,000
Accounts payable	113,446,000	90,314,000
Accrued liabilities	31,966,000	23,065,000
Accounts receivable	(56,752,000)	(12,669,000)	(77,562,000)
Accounts payable	26,250,000	33,352,000	(2,185,000)
Accrued liabilities	8,144,000	13,174,000	4,172,000
Reclassifications to accrued liabilities | ASC 210-20-45
Reclassifications and adjustments
Accounts receivable		64,800,000
Accounts payable		4,600,000
Accrued liabilities		(1,400,000)
Accrued promotional allowances		61,600,000
Accounts receivable		(14,700,000)	(18,100,000)
Accounts payable		(3,700,000)	13,600,000
Accrued liabilities		3,700,000	(5,200,000)
Accrued promotional allowances		14,700,000	9,700,000
Reclassifications to accrued liabilities | Adjustments
Reclassifications and adjustments
Accrued distributor terminations		400,000
Current portion of debt		$ 300,000