SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Tables)

6 Months Ended

Jun. 30, 2013

Accounting Policies [Abstract]

Available-for-sale Securities [Table Text Block]

Amortized cost and estimated fair market value of investments classified as available-for-sale at June 30, 2013, are as follows(in thousands):

	Amortized		Gross Unrealized					Estimated Fair
	Cost		Gains		Losses			Market Value
Investments due in less than 3 months:
Commercial paper	$	15,891	$	—	$	—		$	15,891
Corporate securities	8,605		6		—			8,611
Total	$	24,496	$	6	$	—		$	24,502
Investments due in 4-12 months:
Corporate securities	$	7	$	—	$	—		$	7
Total	$	7	$	—	$	—		$	7
Investments due in more than 12 months:
Corporate securities	$	51,138	$	57	$	(183	)	$	51,012
Total	$	51,138	$	57	$	(183	)	$	51,012
Total investment securities	$	75,641	$	63	$	(183	)	$	75,521

Amortized cost and estimated fair market value of investments classified as available-for-sale at December 31, 2012, are as follows(in thousands):

	Amortized		Gross Unrealized				Estimated Fair
	Cost		Gains		Losses		Market Value
Investments due in less than 3 months:
Corporate securities	$	1,500	$	1	$	—	$	1,501
Total	$	1,500	$	1	$	—	$	1,501
Investments due in 4-12 months:
Corporate securities	$	24,127	$	83	$	—	$	24,210
Total	$	24,127	$	83	$	—	$	24,210
Investments due in more than 12 months:
Corporate securities	$	6,000	$	55	$	—	$	6,055
Total	$	6,000	$	55	$	—	$	6,055
Total investment securities	$	31,627	$	139	$	—	$	31,766

Schedule of Accounts Receivable [Table Text Block]

Accounts Receivable (in thousands):

	June 30, 2013			December 31, 2012
Accounts receivable trade	$	42,733		$	33,866
Accrued ship and debit and rebate claims	(26,866		)	(26,293		)
Allowance for doubtful accounts	(95		)	(247		)
Total	$	15,772		$	7,326

Schedule of Prepaid Expenses and Other Current Assets [Table Text Block]

Prepaid Expenses and Other Current Assets (in thousands):

	June 30, 2013		December 31, 2012
Prepaid legal fees	$	1,104	$	1,760
Prepaid income tax	7,348		11,463
Prepaid maintenance agreements	347		616
Interest receivable	312		149
Supplier prepayment	606		1,170
Other	2,380		2,243
Total	$	12,097	$	17,401

Changes in Accumulated Other Comprehensive Income (Loss) [Table Text Block]

Changes in accumulated other comprehensive income (loss) for the three months ended June 30, 2013 (in thousands):

	Unrealized Gains and Losses on Available-for-Sale Securities			Defined Benefit Pension Items				Foreign Currency Items			Total
Beginning balance at April 1, 2013	$	84		$	(546	)		$	(22	)	$	(484	)
Other comprehensive income before reclassifications	(204		)	—				(13		)	(217		)
Amounts reclassified from accumulated other comprehensive income	—			14			(1)	—			14
Net-current period other comprehensive income	(204		)	14				(13		)	(203		)
Ending balance at June 30, 2013	$	(120	)	$	(532	)		$	(35	)	$	(687	)

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(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.

Changes in accumulated other comprehensive income (loss) for the six months ended June 30, 2013 (in thousands):

	Unrealized Gains and Losses on Available-for-Sale Securities			Defined Benefit Pension Items				Foreign Currency Items			Total
Beginning balance at December 31, 2012	$	138		$	(560	)		$	129		$	(293	)
Other comprehensive income before reclassifications	(258		)	—				(164		)	(422		)
Amounts reclassified from accumulated other comprehensive income	—			28			(1)	—			28
Net-current period other comprehensive income	(258		)	28				(164		)	(394		)
Ending balance at June 30, 2013	$	(120	)	$	(532	)		$	(35	)	$	(687	)

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(1) 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.