ACCOUNTS RECEIVABLE ALLOWANCES (Details) (USD $)	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012	Dec. 31, 2012
Accounts Receivable, Net, Current [Abstract]
Gross accounts receivable	$ 85,230,000		$ 74,855,000
Less:
Chargeback and rebate reserve	(15,740,000)		(13,452,000)
Returns reserve	(8,409,000)		(8,409,000)
Discount and allowances reserve	(1,631,000)		(1,362,000)
Advertising and promotion reserve	(436,000)		(585,000)
Allowance for doubtful accounts	(16,000)		(30,000)
Net trade accounts receivable	58,998,000		51,017,000
Chargeback and rebate expense	43,763,000	22,042,000
Provision for product returns	1,231,000	1,419,000
Provision for cash discounts	$ 1,975,000	$ 1,207,000