Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Statement of Cash Flows [Abstract]
Net Income (Loss) Attributable to Parent	$ 26,902	$ 35,208	$ (22,055)
Adjustments to reconcile net income (loss) to net cash provided by operating activities
Depreciation and amortization	55,028	60,152	75,084
Curtailment gain	(1,699)	0	(1,607)
Gain from foundry arrangement	0	0	(3,034)
Realized gain on sales of investments in privately-held companies	(1,317)	0	0
Recovery of receivables from foundry supplier	0	(485)	(600)
(Recovery) provision for doubtful accounts	(98)	4,054	(22)
Asset impairment charges	0	26,624	7,502
Gains on sale of assets, net	(1,626)	(4,364)	(886)
Deferred income taxes	16,063	18,507	(8,660)
Write-off of equipment deposit	0	1,730	0
Realized gain on short-term investments	0	(385)	0
Accretion of interest on long-term debt	1,272	1,756	1,113
Share-based compensation expense	51,392	59,679	43,124
Excess tax benefit on share-based compensation	(1,575)	(1,601)	(2,260)
Other non-cash (gains) losses, net	(6,929)	(6,881)	(1,201)
Changes in operating assets and liabilities, net of acquisitions
Accounts receivable	26,638	(17,070)	(18,171)
Inventories	21,041	3,922	69,460
Current and other assets	9,090	1,253	(14,050)
Trade accounts payable	(34,851)	(332)	(13,655)
Accrued and other liabilities	(32,266)	(10,161)	12,912
Income taxes payable	(10,940)	1,717	(9,238)
Deferred income on shipments to distributors	(10,349)	6,465	13,368
Net cash provided by operating activities	105,776	179,788	127,124
Cash flows from investing activities
Acquisitions of fixed assets	(28,752)	(44,693)	(35,117)
Proceeds from sale of business	0	3,219	5,092
Proceeds from sale of assets	21,191	73	3,100
Proceeds from sales of investments in privately-held companies	3,817	0	0
Acquisition of businesses, net of cash acquired	0	(139,580)	(25,852)
Acquisitions of intangible assets	(2,025)	(3,341)	(6,328)
Sales or maturities of marketable securities	0	3,071	0
Net cash used in investing activities	(5,769)	(181,251)	(59,105)
Cash flows from financing activities
Proceeds from issuance of debt	0	90,000	0
Principal payments on debt and capital leases	(29,094)	(16,353)	(3,644)
Debt issuance cost	0	0	(2,051)
Repurchases of common stock	(11,984)	(130,383)	(87,781)
Payment of dividends	(50,238)	0	0
Proceeds from issuance of common stock	13,974	13,538	22,948
Tax payments related to shares withheld for vested restricted stock units	(20,284)	(25,128)	(20,315)
Excess tax benefit on share-based compensation	1,575	1,601	2,260
Net cash used in financing activities	(96,051)	(66,725)	(88,583)
Effect of exchange rate changes on cash and cash equivalents	(641)	(1,756)	4,075
Net increase (decrease) in cash and cash equivalents	3,315	(69,944)	(16,489)
Cash and cash equivalents at beginning of the period	206,937	276,881	293,370
Cash and cash equivalents at end of the period	210,252	206,937	276,881
Supplemental cash flow disclosures:
Interest paid	1,346	860	912
Income taxes paid (refund)	7,526	(7,300)	13,761
Supplemental non-cash investing and financing activities disclosures:
(Decrease) increase in accounts payable related to fixed assets purchases	(3,194)	(1,393)	4,825
Decrease in liabilities related to intangible assets purchases	$ (2,025)	$ (3,341)	$ (6,328)