SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details) (USD $)	3 Months Ended			9 Months Ended			12 Months Ended
	Sep. 30, 2013		Sep. 30, 2012	Sep. 30, 2013		Sep. 30, 2012	Dec. 31, 2012
Deferred Revenue [Abstract]
Net product sales, percentage				75.00%			74.00%
Deferred revenue	$ 27,800,000			$ 27,800,000			$ 20,700,000
Deferred cost	10,900,000			10,900,000			9,100,000
Accounts Receivable [Abstract]
Accounts receivable trade	45,182,000			45,182,000			33,866,000
Accrued ship and debit and rebate claims	(29,961,000)			(29,961,000)			(26,293,000)
Allowance for doubtful accounts	(120,000)			(120,000)			(247,000)
Total	15,101,000			15,101,000			7,326,000
Prepaid Expenses and Other Current Assets [Abstract]
Prepaid legal fees	1,470,000			1,470,000			1,760,000
Prepaid income tax	9,307,000			9,307,000			11,463,000
Prepaid maintenance agreements	769,000			769,000			616,000
Interest receivable	527,000			527,000			149,000
Supplier Prepayment	302,000			302,000			1,170,000
Other	3,182,000			3,182,000			2,243,000
Total	15,557,000			15,557,000			17,401,000
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance	(687,000)			(293,000)
Other comprehensive income (loss) before reclassifications	314,000			(108,000)
Amounts reclassified from accumulated other comprehensive income	15,000			43,000
Total other comprehensive income (loss)	329,000		142,000	(65,000)		237,000
Ending balance	(358,000)			(358,000)			(293,000)
Unrealized Gains and Losses on Available-for-Sale Securities [Member]
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance	(120,000)			138,000
Other comprehensive income (loss) before reclassifications	196,000			(62,000)
Amounts reclassified from accumulated other comprehensive income	0			0
Total other comprehensive income (loss)	196,000			(62,000)
Ending balance	76,000			76,000
Defined Benefit Pension Items [Member]
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance	(532,000)			(560,000)
Other comprehensive income (loss) before reclassifications	0			0
Amounts reclassified from accumulated other comprehensive income	15,000	[1]		43,000	[2]
Total other comprehensive income (loss)	15,000			43,000
Ending balance	(517,000)			(517,000)
Foreign Currency Items [Member]
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance	(35,000)			129,000
Other comprehensive income (loss) before reclassifications	118,000			(46,000)
Amounts reclassified from accumulated other comprehensive income	0			0
Total other comprehensive income (loss)	118,000			(46,000)
Ending balance	$ 83,000			$ 83,000

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

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