CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 30, 2012		Sep. 30, 2011
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income (loss)	$ (44,121)	[1]	$ 27,965	[1]
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation	11,426		11,337
Amortization of intangibles	3,322		729
Charge related to SemiSouth (Note 15)	59,237		0
Gain on sale of property and equipment	(1)		(41)
Stock-based compensation expense	10,520		6,617
Amortization of premium on marketable securities	738		1,255
Non-cash interest income from SemiSouth note	(1,445)		0
Deferred income taxes	4,089		779
Provision for (reduction in) accounts receivable allowances	21		(74)
Excess tax benefit from stock options exercised	(560)		(729)
Tax benefit associated with employee stock plans	1,413		1,826
Change in operating assets and liabilities:
Accounts receivable	1,489		(4,542)
Inventories	15,745		10,184
Prepaid expenses and other assets	(11,335)		2,823
Accounts payable	4,842		(1,090)
Taxes payable and accrued liabilities	(28,255)		4,891
Deferred income on sales to distributors	2,554		(1,904)
Net cash provided by operating activities	29,679		60,026
CASH FLOWS FROM INVESTING ACTIVITIES:
Purchases of property and equipment	(12,181)		(16,229)
Proceeds from sale of property and equipment	2		2,249
Acquisitions	(115,720)		(6,914)
Other assets	0		(1,271)
Increase in financing lease receivable	(420)		(7,978)
Collections of financing lease receivable	527		314
Loan to SemiSouth	(18,000)		(3,000)
Collection of note to SemiSouth	0		3,000
Purchases of marketable securities	0		(31,269)
Proceeds from maturities of marketable securities	36,788		15,175
Net cash used in investing activities	(109,004)		(45,923)
CASH FLOWS FROM FINANCING ACTIVITIES:
Issuance of common stock under employee stock plans	17,977		18,218
Repurchase of common stock	0		(35,819)
Payments of dividends to stockholders	(4,301)		(4,320)
Excess tax benefit from stock options exercised	560		729
Net cash provided by (used in) financing activities	14,236		(21,192)
NET DECREASE IN CASH AND CASH EQUIVALENTS	(65,089)		(7,089)
CASH AND CASH EQUIVALENTS AT BEGINNING OF PERIOD	139,836		155,667
CASH AND CASH EQUIVALENTS AT END OF PERIOD	74,747		148,578
SUPPLEMENTAL DISCLOSURE OF NON-CASH INVESTING AND FINANCING ACTIVITIES:
Unpaid property and equipment	1,478		3,486
Receipt of SemiSouth purchase option	6,216		0
SUPPLEMENTAL DISCLOSURE OF CASH FLOW INFORMATION:
Cash paid for income taxes, net of refunds	$ 45,108		$ 553

[1] The Company includes the shares underlying performance-based awards in the calculation of diluted earnings per share when they become contingently issuable per ASC 260-10, Earnings per Share and excludes such shares when they are not contingently issuable. The Company has excluded all performance-based awards underlying the fiscal 2012 and 2011 awards as those shares were not contingently issuable as of the end of the periods reported.