SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Tables)

9 Months Ended

Sep. 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 September 30, 2012, are as follows(in thousands):

	Amortized		Gross Unrealized				Estimated Fair
	Cost		Gains		Losses		Market Value
Investments due in less than 3 months:
Commercial paper	$	12,922	$	—	$	—	$	12,922
Corporate securities	3,682		5		—		3,687
Total	$	16,604	$	5	$	—	$	16,609
Investments due in 4-12 months:
Corporate securities	$	25,732	$	129	$	—	$	25,861
Total	$	25,732	$	129	$	—	$	25,861
Investments due in more than 12 months:
Corporate securities	$	6,000	$	57	$	—	$	6,057
Total	$	6,000	$	57	$	—	$	6,057
Total investment securities	$	48,336	$	191	$	—	$	48,527

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):

	September 30, 2012			December 31, 2011
Accounts receivable trade	$	39,125		$	27,972
Accrued ship and debit and rebate claims	(27,727		)	(18,361		)
Allowance for doubtful accounts	(292		)	(215		)
Total	$	11,106		$	9,396

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

Prepaid Expenses and Other Current Assets (in thousands):

	September 30, 2012		December 31, 2011
Prepaid legal fees	$	875	$	3,500
Prepaid income tax	12,708		118
Prepaid maintenance agreements	677		669
Interest receivable	325		625
Supplier prepayment	1,100		—
Other	1,974		2,156
Total	$	17,659	$	7,068

Schedule of Other Assets, Noncurrent [Table Text Block]

Other Assets (in thousands):

	September 30, 2012		December 31, 2011
Prepaid royalty - SemiSouth (Note 15)	$	—	$	10,000
SemiSouth related assets (Note 15)	—		7,000
Financing lease receivables and deposits - SemiSouth (Note 15)	—		7,558
Other	4,042		1,953
Total	$	4,042	$	26,511