SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Tables)

6 Months Ended

Jun. 30, 2012

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, 2012, are as follows(in thousands):

	Amortized		Gross Unrealized				Estimated Fair
	Cost		Gains		Losses		Market Value
Investments due in less than 3 months:
Certificates of deposit	$	10,000	$	—	$	—	$	10,000
Corporate securities	14,361		25		—		14,386
Total	$	24,361	$	25	$	—	$	24,386
Investments due in 4-12 months:
Corporate securities	$	20,875	$	71	$	—	$	20,946
Total	$	20,875	$	71	$	—	$	20,946
Investments due in more than 12 months:
Corporate securities	$	14,670	$	66	$	—	$	14,736
Total	$	14,670	$	66	$	—	$	14,736
Total investment securities	$	59,906	$	162	$	—	$	60,068

Held-to-maturity Securities [Table Text Block]

Amortized cost and estimated fair market value of investments classified as held-to-maturity at December 31, 2011 are as follows(in thousands):

	Amortized		Gross Unrealized					Estimated Fair
	Cost		Gains		Losses			Market Value
Investments due in less than 3 months:
Commercial paper	$	9,849	$	—	$	—		$	9,849
Corporate securities	6,098		9		(1		)	6,106
Total	$	15,947	$	9	$	(1	)	$	15,955
Investments due in 4-12 months:
Corporate securities	$	24,801	$	179	$	(23	)	$	24,957
Certificates of deposit	10,000		1		—			10,001
Total	$	34,801	$	180	$	(23	)	$	34,958
Investments due in more than 12 months:
Corporate securities	$	32,041	$	5	$	(178	)	$	31,868
Total	$	32,041	$	5	$	(178	)	$	31,868
Total investment securities	$	82,789	$	194	$	(202	)	$	82,781

Schedule of Accounts Receivable [Table Text Block]

Accounts Receivable (in thousands):

	June 30, 2012			December 31, 2011
Accounts receivable trade	$	41,172		$	27,972
Accrued ship and debit and rebate claims	(22,949		)	(18,361		)
Allowance for doubtful accounts	(257		)	(215		)
Total	$	17,966		$	9,396

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

Prepaid Expenses and Other Current Assets (in thousands):

	June 30, 2012		December 31, 2011
Prepaid legal fees	$	1,750	$	3,500
Prepaid income tax	659		118
Prepaid maintenance agreements	317		669
Interest receivable	495		625
Other receivables	1,310		—
Supplier prepayment	1,400		—
Other	1,827		2,156
Total	$	7,758	$	7,068

Schedule of Other Assets, Noncurrent [Table Text Block]

Other Assets (in thousands):

	June 30, 2012		December 31, 2011
Prepaid royalty - SemiSouth (Note 15)	$	10,000	$	10,000
Investment in SemiSouth (Note 15)	7,000		7,000
Note receivable, net of interest discount - SemiSouth (Note 15)	12,678		—
Financing lease receivables and deposits - SemiSouth (Note 16)	6,613		7,558
SemiSouth purchase option (Note 15)	6,216		—
Other	873		1,953
Total	$	43,380	$	26,511