SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Tables)

9 Months Ended

Sep. 30, 2011

Accounting Policies [Abstract]

Held-to-maturity Securities [Table Text Block]

Amortized cost and estimated fair market value of investments classified as held-to-maturity at September 30, 2011, are as follows(in thousands):

			Gross Unrealized
	Amortized Cost		Gains		Losses			Estimated Fair Market Value
Investments due in less than 3 months:
Commercial paper	$	7,000	$	—	$	—		$	7,000
Corporate securities	11,602		4		(1		)	11,605
Total	$	18,602	$	4	$	(1	)	$	18,605
Investments due in 4-12 months:
Corporate securities	$	27,330	$	241	(30		)	$	27,541
Certificates of deposit	10,000		8		—			10,008
Total	$	37,330	$	249	(30		)	$	37,549
Investments due in more than 12 months:
Corporate securities	$	25,022	$	25	$	(141	)	$	24,906
Total	$	25,022	$	25	$	(141	)	$	24,906
Total investment securities	$	80,954	$	278	$	(172	)	$	81,060

Amortized cost and estimated fair market value of investments classified as held-to-maturity at December 31, 2010 are as follows(in thousands):

			Gross Unrealized
	Amortized Cost		Gains		Losses			Estimated Fair Market Value
Investments due in less than 3 months:
Commercial paper	$	7,135	$	—	$	—		$	7,135
Corporate securities	1,508		—		(1		)	1,507
Total	$	8,643	$	—	$	(1	)	$	8,642
Investments due in 4-12 months:
Corporate securities	$	21,255	$	84	$	—		$	21,339
U.S. government securities	5,095		20		—			5,115
U.S. municipal securities	1,005		3		—			1,008
Total	$	27,355	$	107	$	—		$	27,462
Investments due in more than 12 months:
Corporate securities	$	31,760	$	648	$	—		$	32,408
Total	$	31,760	$	648	$	—		$	32,408
Total investment securities	$	67,758	$	755	$	(1	)	$	68,512

Schedule of Comprehensive Income (Loss) [Table Text Block]

The components of comprehensive income, net of taxes, are as follows (in thousands):

	Three Months Ended					Nine Months Ended
	September 30,					September 30,
	2011			2010		2011			2010
Net income	$	7,512		$	12,634	$	27,965		$	40,534
Other comprehensive income:
Translation adjustments	(78		)	105		(5		)	50
Total comprehensive income	$	7,434		$	12,739	$	27,960		$	40,584

Schedule of Accounts Receivable [Table Text Block]

Accounts Receivable (in thousands):

	September 30, 2011			December 31, 2010
Accounts receivable trade	$	32,764		$	30,656
Accrued ship and debit and rebate claims	(22,232		)	(24,839		)
Allowance for doubtful accounts	(202		)	(275		)
Other	—			171
Total	$	10,330		$	5,713

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

Prepaid Expenses and Other Current Assets (in thousands):

	September 30, 2011		December 31, 2010
Prepaid legal fees	$	1,000	$	4,000
Prepaid inventory (Note 16)	—		917
Prepaid income tax	1,351		1,117
Prepaid maintenance agreements	786		554
Interest receivable	788		737
Other	2,939		1,938
Total	$	6,864	$	9,263

Schedule of Other Assets, Noncurrent [Table Text Block]

Other Assets (in thousands):

	September 30, 2011		December 31, 2010
Prepaid royalty (Note 15)	$	10,000	$	10,000
Investment in third party (Note 15)	7,000		7,000
Financing lease receivables and deposits (Note 17)	7,215		—
Other	1,584		288
Total	$	25,799	$	17,288

Schedule of Accrued Liabilities Table taxt block [Table Text Block]

Other Accrued Liabilities (in thousands):

	September 30, 2011		December 31, 2010
Accrued payment for acquisition (Note 14)	$	—	$	6,955
Accrued professional fees	1,354		1,013
Accrued expense for engineering wafers	529		502
Advances from customers	498		713
Other	232		365
Total	$	2,613	$	9,548