SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details) (USD $)	3 Months Ended			6 Months Ended			12 Months Ended
	Jun. 30, 2013		Jun. 30, 2012	Jun. 30, 2013		Jun. 30, 2012	Dec. 31, 2012
Deferred Revenue [Abstract]
Net product sales, percentage				75.00%			74.00%
Deferred revenue	$ 25,700,000			$ 25,700,000			$ 20,700,000
Deferred cost	10,700,000			10,700,000			9,100,000
Accounts Receivable [Abstract]
Accounts receivable trade	42,733,000			42,733,000			33,866,000
Accrued ship and debit and rebate claims	(26,866,000)			(26,866,000)			(26,293,000)
Allowance for doubtful accounts	(95,000)			(95,000)			(247,000)
Total	15,772,000			15,772,000			7,326,000
Prepaid Expenses and Other Current Assets [Abstract]
Prepaid legal fees	1,104,000			1,104,000			1,760,000
Prepaid income tax	7,348,000			7,348,000			11,463,000
Prepaid maintenance agreements	347,000			347,000			616,000
Interest receivable	312,000			312,000			149,000
Supplier Prepayment	606,000			606,000			1,170,000
Other	2,380,000			2,380,000			2,243,000
Total	12,097,000			12,097,000			17,401,000
Accumulated Other Comprehensive Income (Loss) [Abstract]
Beginning balance	(484,000)			(293,000)
Other comprehensive income before reclassifications	(217,000)			(422,000)
Amounts reclassified from accumulated other comprehensive income	14,000			28,000
Total other comprehensive income (loss)	(203,000)		(253,000)	(394,000)		95,000
Ending balance	(687,000)			(687,000)			(293,000)
Unrealized Gains and Losses on Available-for-Sale Securities [Member]
Accumulated Other Comprehensive Income (Loss) [Abstract]
Beginning balance	84,000			138,000
Other comprehensive income before reclassifications	(204,000)			(258,000)
Amounts reclassified from accumulated other comprehensive income	0			0
Total other comprehensive income (loss)	(204,000)			(258,000)
Ending balance	(120,000)			(120,000)
Defined Benefit Pension Items [Member]
Accumulated Other Comprehensive Income (Loss) [Abstract]
Beginning balance	(546,000)			(560,000)
Other comprehensive income before reclassifications	0			0
Amounts reclassified from accumulated other comprehensive income	14,000	[1]		28,000	[2]
Total other comprehensive income (loss)	14,000			28,000
Ending balance	(532,000)			(532,000)
Foreign Currency Items [Member]
Accumulated Other Comprehensive Income (Loss) [Abstract]
Beginning balance	(22,000)			129,000
Other comprehensive income before reclassifications	(13,000)			(164,000)
Amounts reclassified from accumulated other comprehensive income	0			0
Total other comprehensive income (loss)	(13,000)			(164,000)
Ending balance	$ (35,000)			$ (35,000)

[1] This component of accumulated other comprehensive income is included in the computation of net periodic pension cost for the three months ended June 30, 2013.

[2] This component of accumulated other comprehensive income is included in the computation of net periodic pension cost for the six months ended June 30, 2013.