INPHI 10-Q 7 Nov 18 2018 Q3 Quarterly report Financial data

Document And Entity Information

Document And Entity Information - shares	9 Months Ended
	Sep. 30, 2018	Nov. 01, 2018
Document Information [Line Items]
Entity Registrant Name	INPHI CORP
Entity Central Index Key	1,160,958
Trading Symbol	iphi
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Entity Current Reporting Status	Yes
Entity Emerging Growth Company	false
Entity Small Business	false
Entity Common Stock, Shares Outstanding (in shares)		44,111,553
Document Type	10-Q
Document Period End Date	Sep. 30, 2018
Document Fiscal Year Focus	2,018
Document Fiscal Period Focus	Q3
Amendment Flag	false

Unaudited Condensed Consolidate

Unaudited Condensed Consolidated Balance Sheets (Current Period Unaudited) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Current assets:
Cash and cash equivalents	$ 172,420	$ 163,450
Investments in marketable securities	222,561	241,737
Accounts receivable, net	48,440	67,993
Inventories	34,124	31,721
Prepaid expenses and other current assets	8,402	12,208
Total current assets	485,947	517,109
Property and equipment, net	67,469	60,344
Goodwill	104,502	104,502
Identifiable intangible assets, net	196,533	222,933
Other assets, net	30,929	12,618
Total assets	885,380	917,506
Current liabilities:
Accounts payable	14,257	14,721
Deferred revenue	300	435
Accrued employee expenses	9,173	15,214
Other accrued expenses	5,193	8,290
Other current liabilities	23,499	21,387
Total current liabilities	52,422	60,047
Convertible debt	440,997	421,431
Other long-term liabilities	14,694	24,627
Total liabilities	508,113	506,105
Commitments and contingencies (Note 16)
Stockholders’ equity:
Preferred stock, $0.001 par value; 10,000,000 shares authorized; no shares issued
Common stock, $0.001 par value; 500,000,000 shares authorized; 44,027,738 and 42,780,229 issued and outstanding at September 30, 2018 and December 31, 2017, respectively	44	43
Additional paid-in capital	524,915	484,934
Accumulated deficit	(148,265)	(74,145)
Accumulated other comprehensive income	573	569
Total stockholders’ equity	377,267	411,401
Total liabilities and stockholders’ equity	$ 885,380	$ 917,506

Unaudited Condensed Consolida_2

Unaudited Condensed Consolidated Balance Sheets (Current Period Unaudited) (Parentheticals) - $ / shares	Sep. 30, 2018	Dec. 31, 2017
Preferred stock, par value (in dollars per share)	$ 0.001	$ 0.001
Preferred stock, authorized (in shares)	10,000,000	10,000,000
Preferred stock, issued (in shares)	0	0
Common stock, par value (in dollars per share)	$ 0.001	$ 0.001
Common stock, authorized (in shares)	500,000,000	500,000,000
Common stock, issued (in shares)	44,027,738	42,780,229
Common stock, outstanding (in shares)	44,027,738	42,780,229

Unaudited Condensed Consolida_3

Unaudited Condensed Consolidated Statements of Income (Loss) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Revenue	$ 78,009	$ 84,511	$ 207,959	$ 262,518
Cost of revenue	34,547	42,440	92,340	119,099
Gross profit	43,462	42,071	115,619	143,419
Operating expenses:
Research and development	41,558	78,849	127,300	158,574
Sales and marketing	10,819	10,100	32,472	31,580
General and administrative	7,134	5,584	21,767	18,177
Total operating expenses	59,511	94,533	181,539	208,331
Loss from operations	(16,049)	(52,462)	(65,920)	(64,912)
Interest expense	(8,202)	(7,566)	(23,870)	(22,109)
Other income, net	1,383	1,080	7,264	2,656
Loss before income taxes	(22,868)	(58,948)	(82,526)	(84,365)
Benefit for income taxes	(203)	(10,182)	(8,406)	(9,359)
Net loss	$ (22,665)	$ (48,766)	$ (74,120)	$ (75,006)
Earnings per share:
Basic earnings per share (in dollars per share)	$ (0.52)	$ (1.15)	$ (1.70)	$ (1.78)
Diluted earnings per share (in dollars per share)	$ (0.52)	$ (1.15)	$ (1.70)	$ (1.78)
Weighted-average shares used in computing earnings per share:
Basic (in shares)	43,934,598	42,350,313	43,535,033	42,022,272
Diluted (in shares)	43,934,598	42,350,313	43,535,033	42,022,272

Unaudited Condensed Consolida_4

Unaudited Condensed Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Net loss	$ (22,665)	$ (48,766)	$ (74,120)	$ (75,006)
Other comprehensive income (loss):
Change in unrealized gain or loss, net of tax	140	42	5	266
Realized gain reclassified into earnings, net of tax			(1)
Comprehensive loss	$ (22,525)	$ (48,724)	$ (74,116)	$ (74,740)

Unaudited Condensed Consolida_5

Unaudited Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017
Cash flows from operating activities
Net loss	$ (74,120)	$ (75,006)
Adjustments to reconcile net loss to net cash provided by operating activities:
Depreciation and amortization	59,944	58,730
Stock-based compensation	47,509	32,368
Impairment of intangible assets		47,014
Deferred income taxes	(8,858)	(10,304)
Accretion of convertible debt and amortization of debt issuance costs	19,566	18,217
Net unrealized gain on equity investments	(2,375)
Amortization of premium (discount) on marketable securities	(341)	931
Other noncash items	362	(50)
Changes in assets and liabilities:
Accounts receivable	19,553	(21,576)
Inventories	(2,403)	(2,597)
Prepaid expenses and other assets	704	2,494
Income tax payable/receivable	(1,607)	(1,020)
Accounts payable	918	3,081
Accrued expenses	(9,235)	(3,836)
Deferred revenue	(135)	4,369
Other liabilities	(1,080)	(4,570)
Net cash provided by operating activities	48,402	48,245
Cash flows from investing activities
Purchases of property and equipment	(23,876)	(30,914)
Purchases of marketable securities	(177,003)	(158,244)
Sales of marketable securities	6,312	39,372
Maturities of marketable securities	190,060	139,768
Payment of debt related to purchase of intangible assets	(17,178)	(12,799)
Remaining payment related to acquisition of business		(1,800)
Purchase of equity investment	(12,811)
Proceeds from sale of discontinued operations		10,690
Proceeds from sale of equity investment	2,414
Other investing activity	125	100
Net cash used in investing activities	(31,957)	(13,827)
Cash flows from financing activities
Proceeds from exercise of stock options	522	1,514
Proceeds from employee stock purchase plan	5,906	5,776
Payment of capital lease obligations	(417)	(731)
Repayment of long-term loan	310	272
Minimum tax withholding paid on behalf of employees for restricted stock units	(13,796)	(20,248)
Net cash used in financing activities	(7,475)	(13,417)
Net increase in cash and cash equivalents	8,970	21,001
Cash and cash equivalents at beginning of period	163,450	144,867
Cash and cash equivalents at end of period	172,420	165,868
Supplemental cash flow information:
Income taxes paid	2,000	2,100
Interest paid	4,214	3,378
Supplemental disclosure of non-cash investing and financing activities:
Intangible assets financed with debt	$ 18,611	$ 2,808

Note 1 - Organization and Basis

Note 1 - Organization and Basis of Presentation	9 Months Ended
	Sep. 30, 2018
Notes to Financial Statements
Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block]	1. Inphi Corporation (the “Company”), a Delaware corporation, was incorporated in November 2000. The interim unaudited condensed consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States (“GAAP”) for interim financial information and in accordance with the instructions to Form 10 10 01 X. not December 31, 2017, 10 February 28, 2018. The interim condensed consolidated financial statements included herein are unaudited; however, they contain all normal recurring accruals and adjustments that, in the opinion of management, are necessary to state fairly the Company’s consolidated financial position at September 30, 2018, three nine September 30, 2018 2017 nine September 30, 2018 2017. three nine September 30, 2018 not

Note 2 - Recent Accounting Pron

Note 2 - Recent Accounting Pronouncements	9 Months Ended
	Sep. 30, 2018
Notes to Financial Statements
New Accounting Pronouncements and Changes in Accounting Principles [Text Block]	2. In May 2014, five January 1, 2018, not 3 In January 2016, may not January 1, 2018 no not 4 In February 2016, 12 January 1, 2019. In June 2016, December 15, 2019. In August 2016, 2018. not In January 2017, 2018. not In January 2017, 2 2 December 15, 2019, In May 2017, December 15, 2017. not In February 2018, December 15, 2018, In June 2018, December 15, 2018. In August 2018, no 1 2 3 December 15, 2019. In August 2018, 350 40 December 15, 2019.

Note 3 - Revenue

Note 3 - Revenue	9 Months Ended
	Sep. 30, 2018
Notes to Financial Statements
Revenue from Contract with Customer [Text Block]	3. Revenue On January 1, 2018, 2014 09, 606 not January 1, 2018. no January 1, 2018. January 1, 2018, three nine September 30, 2018 $154 $3,019, three nine September 30, 2018 $5 $548, $3,019 $548 September 30, 2018, January 1, 2018 not The Company recognizes revenue when the control of the promised goods or services is transferred to customers in an amount that reflects the consideration the Company expects to receive in exchange for such goods or services. The following table shows revenue by geography, based on the shipping location of customers: Three Months Ended September 30, Nine Months Ended September 30, 2018 2017 2018 2017 China $ 31,723 $ 20,435 $ 70,710 $ 80,990 United States 25,746 31,985 72,710 63,029 Thailand 10,687 14,447 26,807 38,185 Other 9,853 17,644 37,732 80,314 $ 78,009 $ 84,511 $ 207,959 $ 262,518 Product Revenue The Company’s products are fully functional at the time of shipment and do not may not September 30, 2018, $961. 30 60 one two Other Revenue Occasionally, the Company enters into license and development agreements with some of its customers and recognizes revenue from these agreements upon completion and acceptance by the customer of contract deliverables by milestones or as services are provided, depending on the terms of the arrangement. Revenue is deferred for any amounts billed or received prior to completion of milestones or delivery of services. The Company believes the milestone method best depicts efforts expended to transfer services to the customers. Certain contracts may The Company does not one

Note 4 - Investments

Note 4 - Investments	9 Months Ended
	Sep. 30, 2018
Notes to Financial Statements
Investment [Text Block]	4 . Investments The following table summarizes the investments by investment category: September 30, 201 8 December 31, 201 7 Cost Fair Value Cost Fair Value Available-for-sale securities: Municipal bonds $ 12,531 $ 12,491 $ 27,725 $ 27,657 Corporate notes/bonds 137,270 137,122 146,549 146,401 Variable rate demand notes 4,500 4,500 3,500 3,500 Commercial paper 34,368 34,361 57,006 56,994 Asset backed securities 34,125 34,087 7,197 7,185 Total investments $ 222,794 $ 222,561 $ 241,977 $ 241,737 As of September 30, 2018, 77 September 30, 2018 $315 The contractual maturities of available-for-sale securities at September 30, 2018 Cost Fair Value Due in one year or less $ 143,077 $ 142,924 Due between one and five years 71,717 71,634 Due after five years 8,000 8,003 $ 222,794 $ 222,561 The Company has a marketable equity investment in a company located in Taiwan. The fair value of the investment and unrealized loss as of September 30, 2018 $1,321 $672, The Company has non-marketable equity investments in privately held companies without readily determinable market values. Prior to January 1, 2018, January 1, 2018, 2016 01, no September 30, 2018, $23,866, $6,066 nine September 30, 2018. September 30, 2018 $3,066 nine September 30, 2018.

Note 5 - Inventories

Note 5 - Inventories	9 Months Ended
	Sep. 30, 2018
Notes to Financial Statements
Inventory Disclosure [Text Block]	5 . Inventories Inventories consist of the following: September 30, 201 8 December 31, 201 7 Raw materials $ 13,710 $ 12,267 Work in process 14,126 13,800 Finished goods 6,288 5,654 $ 34,124 $ 31,721

Note 6 - Property and Equipment

Note 6 - Property and Equipment, Net	9 Months Ended
	Sep. 30, 2018
Notes to Financial Statements
Property, Plant and Equipment Disclosure [Text Block]	6 . Property and Equipment, net Property and equipment consist of the following: September 30, 201 8 December 31, 201 7 Laboratory and production equipment $ 113,707 $ 94,609 Office, software and computer equipment 29,619 28,594 Furniture and fixtures 1,529 1,698 Leasehold improvements 7,588 7,250 152,443 132,151 Less accumulated depreciation (84,974 ) (71,807 ) $ 67,469 $ 60,344 Depreciation and amortization expense of property and equipment for the three nine September 30, 2018 $5,134 $14,931, three nine September 30, 2017 $5,304 $15,203, As of September 30, 2018 December 31, 2017, $6,776 $7,181, $126 $471 three nine September 30, 2018, $252 $791 three nine September 30, 2017, Property and equipment not September 30, 2018 December 31, 2017 $1,890 $3,339, The Company leases certain equipment under capital lease agreements. Assets held under capital leases are included in property and equipment above. Gross amount and accumulated depreciation of assets under capital lease as of September 30, 2018 $3,639 $1,544, December 31, 2017 $3,639 $898, The minimum lease payments under capital leases as of September 30, 2018 2018 (remaining) $ 150 2019 501 2020 364 2021 94 Total minimum lease payments 1,109 Less: Amount representing interest 130 Minimum lease payments, net of interest $ 979

Note 7 - Identifiable Intangibl

Note 7 - Identifiable Intangible Assets	9 Months Ended
	Sep. 30, 2018
Notes to Financial Statements
Goodwill and Intangible Assets Disclosure [Text Block]	7 . Identifiable Intangible Assets The following table presents details of identifiable intangible assets: September 30, 201 8 December 31, 201 7 Gross Accumulated Amortization Net Gross Accumulated Amortization Net Developed technology $ 186,800 $ 76,654 $ 110,146 $ 126,300 $ 53,533 $ 72,767 Customer relationships 70,540 19,250 51,290 70,540 11,954 58,586 Trade name 2,310 1,234 1,076 2,310 888 1,422 Patents 1,579 846 733 1,579 734 845 Software 62,899 29,611 33,288 47,039 18,226 28,813 In-process research and development — — — 60,500 — 60,500 $ 324,128 $ 127,595 $ 196,533 $ 308,268 $ 85,335 $ 222,933 During the three September 30, 2018, $60,500 The following table presents amortization of intangible assets for the three nine September 30, 2018 2017: Three Months Ended September 30, Nine Months Ended September 30, 201 8 201 7 201 8 201 7 Cost of goods sold $ 9,723 $ 7,249 $ 23,121 $ 21,749 Research and development 5,058 4,777 14,138 13,999 Sales and marketing 2,432 2,432 7,296 7,295 General and administrative 151 158 458 484 $ 17,364 $ 14,616 $ 45,013 $ 43,527 Based on the amount of intangible assets subject to amortization at September 30, 2018, five 2018 (remaining) $ 17,363 2019 66,882 2020 38,841 2021 32,887 2022 24,261 Thereafter 16,299 $ 196,533 The weighted-average amortization periods remaining by intangible asset category are as follows (in years): Developed technology 3.7 Customer relationship 5.3 Trade name 2.8 Patents 8.2 Software 1.9

Note 8 - Product Warranty Oblig

Note 8 - Product Warranty Obligation	9 Months Ended
	Sep. 30, 2018
Notes to Financial Statements
Product Warranty Disclosure [Text Block]	8 . Product Warranty Obligation As of September 30, 2018 December 31, 2017, $110 no three nine September 30, 2018 2017.

Note 9 - Convertible Debt

Note 9 - Convertible Debt	9 Months Ended
	Sep. 30, 2018
Convertible Debt [Member]
Notes to Financial Statements
Debt Disclosure [Text Block]	9 . Convertible debt In December 2015, $230,000 1.125% 2020 2015 2015 December 1, 2020, 2015 June 1 December 1 June 1, 2016. 24.8988 $1 2015, $40.16 three September 30, 2018 $3,652, $650 $2,754 $248 nine September 30, 2018 $10,685, $1,936 $8,026 $723 three September 30, 2017 $3,443, $650 $2,562 $231 nine September 30, 2017 $10,075, $1,936 $7,467 $672 In connection with the issuance of the Convertible Notes 2015, 2015 2015, 100% 2015, 2015 $52.06 In September 2016, $287,500 0.75% 2021 2016, 2015, 2016 September 1, 2021, 2016 March 1 September 1 March 1, 2017. 17.7508 $1 2016, $56.34 three September 30, 2018 $4,253, $542 $3,430 $281 nine September 30, 2018 $12,425, $1,608 $9,998 $819 three September 30, 2017 $3,999, $542 $3,195 $262 nine September 30, 2017 $11,684, $1,606 $9,315 $763 In connection with the issuance of the Convertible Notes 2016, 2016 2016, 100% 2016, 2016 $73.03

Note 10 - Other Liabilities

Note 10 - Other Liabilities	9 Months Ended
	Sep. 30, 2018
Notes to Financial Statements
Other Liabilities Disclosure [Text Block]	10 . Other liabilities Other current liabilities consist of the following: September 30, 201 8 December 31, 201 7 Obligations under capital lease $ 459 $ 539 Intangible asset liability 21,231 16,892 Others 1,809 3,956 $ 23,499 $ 21,387 Other long-term liabilities consist of the following: September 30, 201 8 December 31, 201 7 Deferred rent $ 1,187 $ 1,487 Income tax payable 687 830 Obligations under capital lease 520 857 Intangible asset liability 11,539 14,445 Deferred tax liabilities — 6,146 Others 761 862 $ 14,694 $ 24,627

Note 11 - Income Taxes

Note 11 - Income Taxes	9 Months Ended
	Sep. 30, 2018
Notes to Financial Statements
Income Tax Disclosure [Text Block]	1 1 . Income Taxes The Company normally determines its interim provision using an estimated single annual effective tax rate for all tax jurisdictions. ASC 740 no three nine September 30, 2018 2017 not The Company recorded an income tax benefit of $203 $8,406 three nine September 30, 2018, 1% 10% three nine September 30, 2018, 21% three nine September 30, 2018 nine September 30, 2018, 2018 The Company recorded an income tax benefit of $10,182 $9,359 three nine September 30, 2017, three nine September 30, 2017 17% 11%, 34% During the three nine September 30, 2018, $1,196 $5,404, September 30, 2018, not no twelve may $51 The Company is currently under examination by the Inland Revenue Authority of Singapore (“IRAS”) for the years 2010, 2011 2012. no may The Tax Act, signed into law on December 22, 2017, 35% 21% January 1, 2018, one December 31, 2017, Staff Accounting Bulletin 118 118” one 118, December 31, 2017, December 31, 2017 21%, three nine September 30, 2018, 2017 no no In January 2018, not three nine September 30, 2018, not

Note 12 - Earnings Per Share

Note 12 - Earnings Per Share	9 Months Ended
	Sep. 30, 2018
Notes to Financial Statements
Earnings Per Share [Text Block]	1 2 . Earnings Per Share The following securities were not Three Months Ended September 30, Nine Months Ended September 30, 201 8 201 7 201 8 201 7 Common stock options 1,186,358 1,430,497 1,220,323 1,479,810 Unvested restricted stock unit 2,945,422 2,591,442 2,886,675 3,107,210 Convertible debt 10,830,038 10,830,038 10,830,038 10,830,038 14,961,818 14,851,977 14,937,036 15,417,058

Note 13 - Stock-based Compensat

Note 13 - Stock-based Compensation	9 Months Ended
	Sep. 30, 2018
Notes to Financial Statements
Disclosure of Compensation Related Costs, Share-based Payments [Text Block]	1 3 . Stock –Based Compensation In June 2010, 2010 “2010 November 2010. 2010 2010 2010 September 30, 2018, 4,493,952 2010 Stock Option Awards The Company did not three nine September 30, 2018 2017. The following table summarizes information regarding options outstanding: Number of Weighted Weighted Aggregate Outstanding at December 31, 201 7 1,346,863 $ 11.67 3.26 $ 33,578 Exercised (164,302 ) 3.21 Outstanding at September 30 , 201 8 1,182,561 $ 12.85 2.85 $ 29,723 Vested and e xercisable at September 30 , 201 8 1,182,561 $ 12.85 2.85 $ 29,723 The intrinsic value of options outstanding, exercisable and vested and expected to vest is calculated based on the difference between the exercise price and the fair value of the Company’s common stock as of the respective balance sheet dates. The total intrinsic value of options exercised during the nine September 30, 2018 2017 $3,887 $8,796, $522 $1,514, nine September 30, 2018 2017. Restricted Stock Units The Company granted restricted stock units (“RSUs”) to members of the Board and employees. Most of the Company’s outstanding RSUs vest over four The following table summarizes information regarding outstanding RSUs: Number of Weighted Value Per Share Outstanding at December 31, 201 7 3,987,552 $ 34.48 Granted 2,065,066 31.58 Vested (1,241,495 ) 28.72 Canceled (542,420 ) 36.68 Outstanding at September 30 , 201 8 4,268,703 $ 34.48 Expected to vest at September 30 , 201 8 4,157,753 The RSUs include performance-based stock units subject to achievement of pre-established revenue goal and earnings per share on non-GAAP basis. Once the goals are met, the performance-based stock units are subject to four nine September 30, 2018 92,205. September 30, 2018, 123,984. Market Value Stock Units In January 2018, 801,000 may 0% 225% 500 three first 2021 2020 may three three Total target shares 336,000 Fair value per share $ 55.81 Total amount to be recognized over the performance period $ 18,752 Risk free interest rate 2.29 % Expected volatility 47.52 % Dividend yield — Employee Stock Purchase Plan In December 2011, April 2015 April 2018. may not 15% six February 10 August 10 85% six The ESPP imposes certain limitations upon an employee’s right to acquire common stock, including the following: (i) no 5% no may $25 2,750,000 nine September 30, 2018 2017 283,493 171,099, The fair value of the ESPP is estimated at the start of offering period using the Black-Scholes option pricing model with the following assumptions: Three Months Ended September 30, Nine Months Ended September 30, 201 8 201 7 201 8 201 7 Risk-free interest rate 2.24 % 1.13 % 2.01 % 0.94 % Expected life (in years) 0.50 0.50 0.50 0.50 Dividend yield — — — — Expected volatility 45 % 45 % 46 % 42 % Estimated fair value $ 9.29 $ 10.04 $ 8.35 $ 11.03 Stock-Based Compensation Expense Stock-based compensation expense is included in the Company’s results of operations as follows: Three Months Ended September 30, Nine Months Ended September 30, 201 8 201 7 201 8 201 7 Operating expenses Cost of goods sold $ 636 $ 556 $ 1,810 $ 1,654 Research and development 9,614 7,770 27,853 20,959 Sales and marketing 3,702 2,247 10,185 6,048 General and administrative 2,788 1,320 7,661 3,707 $ 16,740 $ 11,893 $ 47,509 $ 32,368 Total unrecognized compensation cost related to unvested stock options, restricted stock units and awards at September 30, 2018, $130,504 2.58

Note 14 - Fair Value Measuremen

Note 14 - Fair Value Measurements	9 Months Ended
	Sep. 30, 2018
Notes to Financial Statements
Fair Value Disclosures [Text Block]	1 4 . Fair Value Measurements The guidance on fair value measurements requires fair value measurements to be classified and disclosed in one three Level 1 Level 2 not Level 3 no The Company measures its investments in marketable securities at fair value using the market approach, which uses prices and other relevant information generated by market transactions involving identical or comparable assets or liabilities. The Company has cash equivalents, which consist of money market funds valued using the amortized cost method, in accordance with Rule 2a 7 1940 The Company determines the amount of transfers between Levels 1 2 3 no three nine September 30, 2018. The Convertible Notes are carried on the consolidated balance sheets at their original issuance value including accreted interest, net of unamortized debt discount and issuance cost. The Convertible Notes are not September 30, 2018 December 31, 2017, 2 The following table presents information about assets required to be carried at fair value on a recurring basis: September 30, 201 8 Total Level 1 Level 2 Assets Cash equivalents: Money market funds $ 949 $ 42 $ 907 Commercial paper 106,605 — 106,605 Investment in marketable securities: Municipal bonds 12,491 — 12,491 Corporate notes/bonds 137,122 — 137,122 Variable rate demand notes 4,500 — 4,500 Asset backed securities 34,087 — 34,087 Commercial paper 34,361 — 34,361 $ 330,115 $ 42 $ 330,073 Liabilities Convertible Notes $ 549,476 $ — $ 549,476 December 31, 201 7 Total Level 1 Level 2 Assets Cash equivalents: Money market funds $ 3,332 $ 31 $ 3,301 Municipal bonds 999 — 999 Corporate notes/bonds 2,608 — 2,608 Commercial paper 76,456 — 76,456 Investment in marketable securities: Municipal bonds 27,657 — 27,657 Corporate notes/bonds 146,401 — 146,401 Variable rate demand notes 3,500 — 3,500 Asset backed securities 7,185 — 7,185 Commercial paper 56,994 — 56,994 $ 325,132 $ 31 $ 325,101 Liabilities Convertible Notes $ 555,200 $ — $ 555,200 As discussed in Note 4, 1 4, 3

Note 15 - Segment and Geographi

Note 15 - Segment and Geographic Information	9 Months Ended
	Sep. 30, 2018
Notes to Financial Statements
Segment Reporting Disclosure [Text Block]	1 5 . Segment and Geographic Information The Company operates in one may The following table sets forth the Company’s revenue by geographic region: Three Months Ended September 30, Nine Months Ended September 30, 2018 2017 2018 2017 China $ 31,723 $ 20,435 $ 70,710 $ 80,990 United States 25,746 31,985 72,710 63,029 Thailand 10,687 14,447 26,807 38,185 Other 9,853 17,644 37,732 80,314 $ 78,009 $ 84,511 $ 207,959 $ 262,518 As of September 30, 2018, $29,561 $26,271 December 31, 2017, $8,695 $4,647

Note 16 - Commitments and Conti

Note 16 - Commitments and Contingencies	9 Months Ended
	Sep. 30, 2018
Notes to Financial Statements
Commitments and Contingencies Disclosure [Text Block]	1 6 . Commitments and Contingencies Leases The Company leases its facility under noncancelable lease agreements expiring in various years through 2026. As of September 30, 2018, one 2018 (remaining) $ 1,639 2019 5,553 2020 2,724 2021 1,967 2022 1,723 Thereafter 3,317 $ 16,923 For the three nine September 30, 2018, $1,142 $4,590, three nine September 30, 2017, $1,709 $5,075, Noncancelable Purchase Obligations The Company depends upon third September 30, 2018, $9,030. September 30, 2018, $1,339 $804 Legal Proceedings Netlist, Inc. v. Inphi Corporation, Case No. 09 6900 On September 22, 2009, No. 7,532,537. December 22, 2009, 7,619,912 7,636,274, No. 7,532,537, February 11, 2010 not 2010, inter partes 120 As to the proceeding at the USPTO, reexamination has been ordered for all of the patents that were alleged to infringe, and at present, the USPTO has determined that almost all of the originally filed claims are not No. 7,532,537 August 2, 2016 No. 7,619,912. No. 7,636,274, none While the Company intends to defend the foregoing USPTO proceedings and lawsuit vigorously, the USPTO proceedings and litigation, whether or not Based on the nature of USPTO proceedings and litigation, the Company is currently unable to predict the final outcome of this lawsuit and therefore, cannot determine the likelihood of loss nor estimate a range of possible loss. However, because of the nature and inherent uncertainties of litigation, should the outcome of these actions be unfavorable, the Company’s business, financial condition, results of operations or cash flows could be materially and adversely affected. During the nine September 30, 2018, $8,000 $4,875 $2,125, nine September 30, 2018 The Company has recently been notified that it may may Indemnifications In the ordinary course of business, the Company may not third may may not not no September 30, 2018 December 31, 2017.

Significant Accounting Policies

Significant Accounting Policies (Policies)	9 Months Ended
	Sep. 30, 2018
Accounting Policies [Abstract]
New Accounting Pronouncements, Policy [Policy Text Block]	In May 2014, five January 1, 2018, not 3 In January 2016, may not January 1, 2018 no not 4 In February 2016, 12 January 1, 2019. In June 2016, December 15, 2019. In August 2016, 2018. not In January 2017, 2018. not In January 2017, 2 2 December 15, 2019, In May 2017, December 15, 2017. not In February 2018, December 15, 2018, In June 2018, December 15, 2018. In August 2018, no 1 2 3 December 15, 2019. In August 2018, 350 40 December 15, 2019.

Note 3 - Revenue (Tables)

Note 3 - Revenue (Tables)	9 Months Ended
	Sep. 30, 2018
Notes Tables
Disaggregation of Revenue [Table Text Block]	Three Months Ended September 30, Nine Months Ended September 30, 2018 2017 2018 2017 China $ 31,723 $ 20,435 $ 70,710 $ 80,990 United States 25,746 31,985 72,710 63,029 Thailand 10,687 14,447 26,807 38,185 Other 9,853 17,644 37,732 80,314 $ 78,009 $ 84,511 $ 207,959 $ 262,518

Note 4 - Investments (Tables)

Note 4 - Investments (Tables)	9 Months Ended
	Sep. 30, 2018
Notes Tables
Debt Securities, Available-for-sale [Table Text Block]	September 30, 201 8 December 31, 201 7 Cost Fair Value Cost Fair Value Available-for-sale securities: Municipal bonds $ 12,531 $ 12,491 $ 27,725 $ 27,657 Corporate notes/bonds 137,270 137,122 146,549 146,401 Variable rate demand notes 4,500 4,500 3,500 3,500 Commercial paper 34,368 34,361 57,006 56,994 Asset backed securities 34,125 34,087 7,197 7,185 Total investments $ 222,794 $ 222,561 $ 241,977 $ 241,737
Investments Classified by Contractual Maturity Date [Table Text Block]	Cost Fair Value Due in one year or less $ 143,077 $ 142,924 Due between one and five years 71,717 71,634 Due after five years 8,000 8,003 $ 222,794 $ 222,561

Note 5 - Inventories (Tables)

Note 5 - Inventories (Tables)	9 Months Ended
	Sep. 30, 2018
Notes Tables
Schedule of Inventory, Current [Table Text Block]	September 30, 201 8 December 31, 201 7 Raw materials $ 13,710 $ 12,267 Work in process 14,126 13,800 Finished goods 6,288 5,654 $ 34,124 $ 31,721

Note 6 - Property and Equipme_2

Note 6 - Property and Equipment, Net (Tables)	9 Months Ended
	Sep. 30, 2018
Notes Tables
Property, Plant and Equipment [Table Text Block]	September 30, 201 8 December 31, 201 7 Laboratory and production equipment $ 113,707 $ 94,609 Office, software and computer equipment 29,619 28,594 Furniture and fixtures 1,529 1,698 Leasehold improvements 7,588 7,250 152,443 132,151 Less accumulated depreciation (84,974 ) (71,807 ) $ 67,469 $ 60,344
Schedule of Future Minimum Lease Payments for Capital Leases [Table Text Block]	2018 (remaining) $ 150 2019 501 2020 364 2021 94 Total minimum lease payments 1,109 Less: Amount representing interest 130 Minimum lease payments, net of interest $ 979

Note 7 - Identifiable Intangi_2

Note 7 - Identifiable Intangible Assets (Tables)	9 Months Ended
	Sep. 30, 2018
Notes Tables
Schedule of Finite-Lived Intangible Assets [Table Text Block]	September 30, 201 8 December 31, 201 7 Gross Accumulated Amortization Net Gross Accumulated Amortization Net Developed technology $ 186,800 $ 76,654 $ 110,146 $ 126,300 $ 53,533 $ 72,767 Customer relationships 70,540 19,250 51,290 70,540 11,954 58,586 Trade name 2,310 1,234 1,076 2,310 888 1,422 Patents 1,579 846 733 1,579 734 845 Software 62,899 29,611 33,288 47,039 18,226 28,813 In-process research and development — — — 60,500 — 60,500 $ 324,128 $ 127,595 $ 196,533 $ 308,268 $ 85,335 $ 222,933
Finite-lived Intangible Assets Amortization Expense [Table Text Block]	Three Months Ended September 30, Nine Months Ended September 30, 201 8 201 7 201 8 201 7 Cost of goods sold $ 9,723 $ 7,249 $ 23,121 $ 21,749 Research and development 5,058 4,777 14,138 13,999 Sales and marketing 2,432 2,432 7,296 7,295 General and administrative 151 158 458 484 $ 17,364 $ 14,616 $ 45,013 $ 43,527
Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block]	2018 (remaining) $ 17,363 2019 66,882 2020 38,841 2021 32,887 2022 24,261 Thereafter 16,299 $ 196,533
Finite Lived Intangible Assets Remaining Amortization Period [Table Text Block]	Developed technology 3.7 Customer relationship 5.3 Trade name 2.8 Patents 8.2 Software 1.9

Note 10 - Other Liabilities (Ta

Note 10 - Other Liabilities (Tables)	9 Months Ended
	Sep. 30, 2018
Notes Tables
Other Current Liabilities [Table Text Block]	September 30, 201 8 December 31, 201 7 Obligations under capital lease $ 459 $ 539 Intangible asset liability 21,231 16,892 Others 1,809 3,956 $ 23,499 $ 21,387
Other Noncurrent Liabilities [Table Text Block]	September 30, 201 8 December 31, 201 7 Deferred rent $ 1,187 $ 1,487 Income tax payable 687 830 Obligations under capital lease 520 857 Intangible asset liability 11,539 14,445 Deferred tax liabilities — 6,146 Others 761 862 $ 14,694 $ 24,627

Note 12 - Earnings Per Share (T

Note 12 - Earnings Per Share (Tables)	9 Months Ended
	Sep. 30, 2018
Notes Tables
Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table Text Block]	Three Months Ended September 30, Nine Months Ended September 30, 201 8 201 7 201 8 201 7 Common stock options 1,186,358 1,430,497 1,220,323 1,479,810 Unvested restricted stock unit 2,945,422 2,591,442 2,886,675 3,107,210 Convertible debt 10,830,038 10,830,038 10,830,038 10,830,038 14,961,818 14,851,977 14,937,036 15,417,058

Note 13 - Stock-based Compens_2

Note 13 - Stock-based Compensation (Tables)	9 Months Ended
	Sep. 30, 2018
Notes Tables
Share-based Compensation, Stock Options, Activity [Table Text Block]	Number of Weighted Weighted Aggregate Outstanding at December 31, 201 7 1,346,863 $ 11.67 3.26 $ 33,578 Exercised (164,302 ) 3.21 Outstanding at September 30 , 201 8 1,182,561 $ 12.85 2.85 $ 29,723 Vested and e xercisable at September 30 , 201 8 1,182,561 $ 12.85 2.85 $ 29,723
Schedule of Share-based Compensation, Restricted Stock Units Award Activity [Table Text Block]	Number of Weighted Value Per Share Outstanding at December 31, 201 7 3,987,552 $ 34.48 Granted 2,065,066 31.58 Vested (1,241,495 ) 28.72 Canceled (542,420 ) 36.68 Outstanding at September 30 , 201 8 4,268,703 $ 34.48 Expected to vest at September 30 , 201 8 4,157,753
Schedule of Share-based Payment Award, Equity Instruments Other than Option, Valuation Assumptions [Table Text Block]	<table border="0" cellpadding="0" cellspacing="0" style="margin-right: 7.5%; margin-left: 7.5%; font-size: 10pt; font-family: "Times New Roman", Times, serif; text-indent: 0px; min-; min-width: 700px;"> <tr style="vertical-align: bottom; background-color: rgb(204, 238, 255);"> <td style="font-family: "Times New Roman", Times, serif; font-size: 10pt; width: 82%;"> <div style=" font-family: "Times New Roman", Times, serif; font-size: 10pt; margin-bottom: 0pt; margin-top: 0pt;">Total target shares</div> </td> <td style="width: 1%; font-family: "Times New Roman", Times, serif; font-size: 10pt;"> </td> <td style="width: 1%; font-family: "Times New Roman", Times, serif; font-size: 10pt;"> </td> <td style="width: 15%; text-align: right; font-family: "Times New Roman", Times, serif; font-size: 10pt; margin-left: 7.2pt;"><div style="display: inline; font-style: italic; font-weight: inherit; font-style: normal;">336,000</div></td> <td nowrap="nowrap" style="width: 1%; font-family: "Times New Roman", Times, serif; font-size: 10pt; margin-left: 0pt;"> </td> </tr> <tr style="vertical-align: bottom; background-color: rgb(255, 255, 255);"> <td style="font-family: "Times New Roman", Times, serif; font-size: 10pt;"> <div style=" font-family: "Times New Roman", Times, serif; font-size: 10pt; margin-bottom: 0pt; margin-top: 0pt;">Fair value per share</div> </td> <td style="width: 1%; font-family: "Times New Roman", Times, serif; font-size: 10pt;"> </td> <td style="width: 1%; font-family: "Times New Roman", Times, serif; font-size: 10pt; margin-left: 7.2pt;">$</td> <td style="width: 15%; text-align: right; font-family: "Times New Roman", Times, serif; font-size: 10pt; margin-left: 7.2pt;"><div style="display: inline; font-style: italic; font-weight: inherit; font-style: normal;">55.81</div></td> <td nowrap="nowrap" style="width: 1%; font-family: "Times New Roman", Times, serif; font-size: 10pt; margin-left: 0pt;"> </td> </tr> <tr style="vertical-align: bottom; background-color: rgb(204, 238, 255);"> <td style="font-family: "Times New Roman", Times, serif; font-size: 10pt;"> <div style=" font-family: "Times New Roman", Times, serif; font-size: 10pt; margin-bottom: 0pt; margin-top: 0pt;">Total amount to be recognized over the performance period</div> </td> <td style="width: 1%; font-family: "Times New Roman", Times, serif; font-size: 10pt;"> </td> <td style="width: 1%; font-family: "Times New Roman", Times, serif; font-size: 10pt; margin-left: 7.2pt;">$</td> <td style="width: 15%; text-align: right; font-family: "Times New Roman", Times, serif; font-size: 10pt; margin-left: 7.2pt;"><div style="display: inline; font-style: italic; font-weight: inherit; font-style: normal;">18,752</div></td> <td nowrap="nowrap" style="width: 1%; font-family: "Times New Roman", Times, serif; font-size: 10pt; margin-left: 0pt;"> </td> </tr> <tr style="vertical-align: bottom; background-color: rgb(255, 255, 255);"> <td style="font-family: "Times New Roman", Times, serif; font-size: 10pt;"> <div style=" font-family: "Times New Roman", Times, serif; font-size: 10pt; margin-bottom: 0pt; margin-top: 0pt;">Risk free interest rate</div> </td> <td style="width: 1%; font-family: "Times New Roman", Times, serif; font-size: 10pt;"> </td> <td style="width: 1%; font-family: "Times New Roman", Times, serif; font-size: 10pt;"> </td> <td style="width: 15%; text-align: right; font-family: "Times New Roman", Times, serif; font-size: 10pt; margin-left: 7.2pt;"><div style="display: inline; font-style: italic; font-weight: inherit; font-style: normal;">2.29</div></td> <td nowrap="nowrap" style="width: 1%; font-family: "Times New Roman", Times, serif; font-size: 10pt; margin-left: 0pt;">%</td> </tr> <tr style="vertical-align: bottom; background-color: rgb(204, 238, 255);"> <td style="font-family: "Times New Roman", Times, serif; font-size: 10pt;"> <div style=" font-family: "Times New Roman", Times, serif; font-size: 10pt; margin-bottom: 0pt; margin-top: 0pt;">Expected volatility</div> </td> <td style="width: 1%; font-family: "Times New Roman", Times, serif; font-size: 10pt;"> </td> <td style="width: 1%; font-family: "Times New Roman", Times, serif; font-size: 10pt;"> </td> <td style="width: 15%; text-align: right; font-family: "Times New Roman", Times, serif; font-size: 10pt; margin-left: 7.2pt;"><div style="display: inline; font-style: italic; font-weight: inherit; font-style: normal;">47.52</div></td> <td nowrap="nowrap" style="width: 1%; font-family: "Times New Roman", Times, serif; font-size: 10pt; margin-left: 0pt;">%</td> </tr> <tr style="vertical-align: bottom; background-color: rgb(255, 255, 255);"> <td style="font-family: "Times New Roman", Times, serif; font-size: 10pt;"> <div style=" font-family: "Times New Roman", Times, serif; font-size: 10pt; margin-bottom: 0pt; margin-top: 0pt;">Dividend yield</div> </td> <td style="width: 1%; font-family: "Times New Roman", Times, serif; font-size: 10pt;"> </td> <td style="width: 1%; font-family: "Times New Roman", Times, serif; font-size: 10pt;"> </td> <td style="width: 15%; text-align: right; font-family: "Times New Roman", Times, serif; font-size: 10pt; margin-left: 7.2pt;"><div style="display: inline; font-style: italic; font-weight: inherit; font-style: normal;">—</div></td> <td nowrap="nowrap" style="width: 1%; font-family: "Times New Roman", Times, serif; font-size: 10pt; margin-left: 0pt;"> </td> </tr> </table></div>" id="sjs-B6">&lt;div style="display: inline; font-family: times new roman; font-size: 10pt">&lt;table border="0" cellpadding="0" cellspacing="0" style="margin-right: 7.5%; margin-left: 7.5%; font-size: 10pt; font-family: &quot;Times New Roman&quot;, Times, serif; text-indent: 0px; min-; min-width: 700px;"> &lt;tr style="vertical-align: bottom; background-color: rgb(204, 238, 255);"> &lt;td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; width: 82%;"> &lt;div style=" font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-bottom: 0pt; margin-top: 0pt;">Total target shares&lt;/div> &lt;/td> &lt;td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&nbsp;&lt;/td> &lt;td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&nbsp;&lt;/td> &lt;td style="width: 15%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 7.2pt;">&lt;div style="display: inline; font-style: italic; font-weight: inherit; font-style: normal;">336,000&lt;/div>&lt;/td> &lt;td nowrap="nowrap" style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&nbsp;&lt;/td> &lt;/tr> &lt;tr style="vertical-align: bottom; background-color: rgb(255, 255, 255);"> &lt;td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> &lt;div style=" font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-bottom: 0pt; margin-top: 0pt;">Fair value per share&lt;/div> &lt;/td> &lt;td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&nbsp;&lt;/td> &lt;td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 7.2pt;">$&lt;/td> &lt;td style="width: 15%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 7.2pt;">&lt;div style="display: inline; font-style: italic; font-weight: inherit; font-style: normal;">55.81&lt;/div>&lt;/td> &lt;td nowrap="nowrap" style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&nbsp;&lt;/td> &lt;/tr> &lt;tr style="vertical-align: bottom; background-color: rgb(204, 238, 255);"> &lt;td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> &lt;div style=" font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-bottom: 0pt; margin-top: 0pt;">Total amount to be recognized over the performance period&lt;/div> &lt;/td> &lt;td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&nbsp;&lt;/td> &lt;td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 7.2pt;">$&lt;/td> &lt;td style="width: 15%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 7.2pt;">&lt;div style="display: inline; font-style: italic; font-weight: inherit; font-style: normal;">18,752&lt;/div>&lt;/td> &lt;td nowrap="nowrap" style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&nbsp;&lt;/td> &lt;/tr> &lt;tr style="vertical-align: bottom; background-color: rgb(255, 255, 255);"> &lt;td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> &lt;div style=" font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-bottom: 0pt; margin-top: 0pt;">Risk free interest rate&lt;/div> &lt;/td> &lt;td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&nbsp;&lt;/td> &lt;td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&nbsp;&lt;/td> &lt;td style="width: 15%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 7.2pt;">&lt;div style="display: inline; font-style: italic; font-weight: inherit; font-style: normal;">2.29&lt;/div>&lt;/td> &lt;td nowrap="nowrap" style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">%&lt;/td> &lt;/tr> &lt;tr style="vertical-align: bottom; background-color: rgb(204, 238, 255);"> &lt;td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> &lt;div style=" font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-bottom: 0pt; margin-top: 0pt;">Expected volatility&lt;/div> &lt;/td> &lt;td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&nbsp;&lt;/td> &lt;td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&nbsp;&lt;/td> &lt;td style="width: 15%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 7.2pt;">&lt;div style="display: inline; font-style: italic; font-weight: inherit; font-style: normal;">47.52&lt;/div>&lt;/td> &lt;td nowrap="nowrap" style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">%&lt;/td> &lt;/tr> &lt;tr style="vertical-align: bottom; background-color: rgb(255, 255, 255);"> &lt;td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> &lt;div style=" font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-bottom: 0pt; margin-top: 0pt;">Dividend yield&lt;/div> &lt;/td> &lt;td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&nbsp;&lt;/td> &lt;td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&nbsp;&lt;/td> &lt;td style="width: 15%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 7.2pt;">&lt;div style="display: inline; font-style: italic; font-weight: inherit; font-style: normal;">&#x2014;&lt;/div>&lt;/td> &lt;td nowrap="nowrap" style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&nbsp;&lt;/td> &lt;/tr> &lt;/table>&lt;/div>
Schedule of Share-based Payment Award, Employee Stock Purchase Plan, Valuation Assumptions [Table Text Block]	Three Months Ended September 30, Nine Months Ended September 30, 201 8 201 7 201 8 201 7 Risk-free interest rate 2.24 % 1.13 % 2.01 % 0.94 % Expected life (in years) 0.50 0.50 0.50 0.50 Dividend yield — — — — Expected volatility 45 % 45 % 46 % 42 % Estimated fair value $ 9.29 $ 10.04 $ 8.35 $ 11.03
Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Table Text Block]	Three Months Ended September 30, Nine Months Ended September 30, 201 8 201 7 201 8 201 7 Operating expenses Cost of goods sold $ 636 $ 556 $ 1,810 $ 1,654 Research and development 9,614 7,770 27,853 20,959 Sales and marketing 3,702 2,247 10,185 6,048 General and administrative 2,788 1,320 7,661 3,707 $ 16,740 $ 11,893 $ 47,509 $ 32,368

Note 14 - Fair Value Measurem_2

Note 14 - Fair Value Measurements (Tables)	9 Months Ended
	Sep. 30, 2018
Notes Tables
Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block]	September 30, 201 8 Total Level 1 Level 2 Assets Cash equivalents: Money market funds $ 949 $ 42 $ 907 Commercial paper 106,605 — 106,605 Investment in marketable securities: Municipal bonds 12,491 — 12,491 Corporate notes/bonds 137,122 — 137,122 Variable rate demand notes 4,500 — 4,500 Asset backed securities 34,087 — 34,087 Commercial paper 34,361 — 34,361 $ 330,115 $ 42 $ 330,073 Liabilities Convertible Notes $ 549,476 $ — $ 549,476 December 31, 201 7 Total Level 1 Level 2 Assets Cash equivalents: Money market funds $ 3,332 $ 31 $ 3,301 Municipal bonds 999 — 999 Corporate notes/bonds 2,608 — 2,608 Commercial paper 76,456 — 76,456 Investment in marketable securities: Municipal bonds 27,657 — 27,657 Corporate notes/bonds 146,401 — 146,401 Variable rate demand notes 3,500 — 3,500 Asset backed securities 7,185 — 7,185 Commercial paper 56,994 — 56,994 $ 325,132 $ 31 $ 325,101 Liabilities Convertible Notes $ 555,200 $ — $ 555,200

Note 15 - Segment and Geograp_2

Note 15 - Segment and Geographic Information (Tables)	9 Months Ended
	Sep. 30, 2018
Notes Tables
Revenue from External Customers by Geographic Areas [Table Text Block]	Three Months Ended September 30, Nine Months Ended September 30, 2018 2017 2018 2017 China $ 31,723 $ 20,435 $ 70,710 $ 80,990 United States 25,746 31,985 72,710 63,029 Thailand 10,687 14,447 26,807 38,185 Other 9,853 17,644 37,732 80,314 $ 78,009 $ 84,511 $ 207,959 $ 262,518

Note 16 - Commitments and Con_2

Note 16 - Commitments and Contingencies (Tables)	9 Months Ended
	Sep. 30, 2018
Notes Tables
Schedule of Future Minimum Rental Payments for Operating Leases [Table Text Block]	2018 (remaining) $ 1,639 2019 5,553 2020 2,724 2021 1,967 2022 1,723 Thereafter 3,317 $ 16,923

Note 2 - Recent Accounting Pr_2

Note 2 - Recent Accounting Pronouncements (Details Textual) $ in Thousands	Jan. 01, 2018USD ($)
Accounting Standards Update 2016-01 [Member]
Cumulative Effect of New Accounting Principle in Period of Adoption	$ 0

Note 3 - Revenue (Details Textu

Note 3 - Revenue (Details Textual) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017	Jan. 01, 2018	Dec. 31, 2017
Revenue from Contract with Customer, Excluding Assessed Tax, Total	$ 78,009	$ 84,511	$ 207,959	$ 262,518
Cost of Goods and Services Sold, Total	34,547	$ 42,440	92,340	$ 119,099
Inventory, Net, Total	34,124		$ 34,124			$ 31,721
Minimum [Member]
Product Warranty Term			1 year
Maximum [Member]
Product Warranty Term			2 years
Accounting Standards Update 2014-09 [Member]
Cumulative Effect of New Accounting Principle in Period of Adoption					$ 0
Revenue from Contract with Customer, Excluding Assessed Tax, Total	(154)		$ 3,019
Cost of Goods and Services Sold, Total	5		548
Deferred Revenue	3,019		3,019
Inventory, Net, Total	548		548
Contract with Customer, Refund Liability, Total	$ 961		$ 961

Note 3 - Revenue - Revenue by G

Note 3 - Revenue - Revenue by Geography (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Revenue	$ 78,009	$ 84,511	$ 207,959	$ 262,518
CHINA
Revenue	31,723	20,435	70,710	80,990
UNITED STATES
Revenue	25,746	31,985	72,710	63,029
THAILAND
Revenue	10,687	14,447	26,807	38,185
Other Country [Member]
Revenue	$ 9,853	$ 17,644	$ 37,732	$ 80,314

Note 4 - Investments (Details T

Note 4 - Investments (Details Textual) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2018USD ($)	Dec. 31, 2017USD ($)
Debt Securities, Available-for-sale, Unrealized Loss Position, Number of Positions	77
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss, Total	$ 315
Equity Securities, FV-NI	1,321
Equity Securities, FV-NI, Accumulated Gross Unrealized Loss	672
Cost-method Investments, Other than Temporary Impairment		$ 0
Equity Securities without Readily Determinable Fair Value, Upward Price Adjustment, Annual Amount	3,066
Other Noncurrent Assets [Member]
Equity Securities without Readily Determinable Fair Value, Amount	23,866
Other Noncurrent Assets [Member] | Equity Securities, Fair Value Based on Observable Transaction [Member]
Equity Securities without Readily Determinable Fair Value, Amount	$ 6,066

Note 4 - Investments - Summary

Note 4 - Investments - Summary of Investments by Investment (Details) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Available-for-sale securities, amortized cost	$ 222,794	$ 241,977
Available-for-sale securities, fair value	222,561	241,737
US States and Political Subdivisions Debt Securities [Member]
Available-for-sale securities, amortized cost	12,531	27,725
Available-for-sale securities, fair value	12,491	27,657
Corporate Debt Securities [Member]
Available-for-sale securities, amortized cost	137,270	146,549
Available-for-sale securities, fair value	137,122	146,401
Variable Rate Demand Note [Member]
Available-for-sale securities, amortized cost	4,500	3,500
Available-for-sale securities, fair value	4,500	3,500
Commercial Paper [Member]
Available-for-sale securities, amortized cost	34,368	57,006
Available-for-sale securities, fair value	34,361	56,994
Asset-backed Securities [Member]
Available-for-sale securities, amortized cost	34,125	7,197
Available-for-sale securities, fair value	$ 34,087	$ 7,185

Note 4 - Investments - Contract

Note 4 - Investments - Contractual Maturities of Available-for-sale Securities (Details) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Due in one year or less, cost	$ 143,077
Due in one year or less, fair value	142,924
Due between one and five years, cost	71,717
Due between one and five years, fair value	71,634
Due after five years, cost	8,000
Due after five years, fair value	8,003
Available-for-sale securities, cost	222,794	$ 241,977
Available-for-sale securities, fair value	$ 222,561	$ 241,737

Note 5 - Inventories - Schedule

Note 5 - Inventories - Schedule of Inventory (Details) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Raw materials	$ 13,710	$ 12,267
Work in process	14,126	13,800
Finished goods	6,288	5,654
Total inventories	$ 34,124	$ 31,721

Note 6 - Property and Equipme_3

Note 6 - Property and Equipment, Net (Details Textual) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017	Dec. 31, 2017
Depreciation, Total	$ 5,134	$ 5,304	$ 14,931	$ 15,203
Capitalized Computer Software, Gross	6,776		6,776		$ 7,181
Capitalized Computer Software, Amortization	126	$ 252	471	$ 791
Capital Expenditures Incurred but Not yet Paid			1,890		3,339
Capital Leased Assets, Gross, Total	3,639		3,639		3,639
Capital Leases, Lessee Balance Sheet, Assets by Major Class, Accumulated Depreciation	$ 1,544		$ 1,544		$ 898

Note 6 - Property and Equipme_4

Note 6 - Property and Equipment, Net - Property and Equipment Components (Details) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Property and equipment, gross	$ 152,443	$ 132,151
Less accumulated depreciation	(84,974)	(71,807)
Total property and equipment	67,469	60,344
Equipment [Member]
Property and equipment, gross	113,707	94,609
Office, Software, and Computer Equipment [Member]
Property and equipment, gross	29,619	28,594
Furniture and Fixtures [Member]
Property and equipment, gross	1,529	1,698
Leasehold Improvements [Member]
Property and equipment, gross	$ 7,588	$ 7,250

Note 6 - Property and Equipme_5

Note 6 - Property and Equipment, Net - Minimum Capital Lease Payments (Details) $ in Thousands	Sep. 30, 2018USD ($)
2018 (remaining)	$ 150
2,019	501
2,020	364
2,021	94
Total minimum lease payments	1,109
Less: Amount representing interest	130
Minimum lease payments, net of interest	$ 979

Note 7 - Identifiable Intangi_3

Note 7 - Identifiable Intangible Assets (Details Textual) $ in Millions	3 Months Ended
	Sep. 30, 2018USD ($)
In-Process Research and Development to Developed Technology [Member]
Current Period Reclassification Adjustment	$ 60.5

Note 7 - Identifiable Intangi_4

Note 7 - Identifiable Intangible Assets - Identifiable Intangible Assets (Details) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Intangible assets, gross	$ 324,128	$ 308,268
Intangible assets, accumulated amortization	127,595	85,335
Intangible assets, net	196,533	222,933
Developed Technology Rights [Member]
Intangible assets, gross	186,800	126,300
Intangible assets, accumulated amortization	76,654	53,533
Intangible assets, net	110,146	72,767
Customer Relationships [Member]
Intangible assets, gross	70,540	70,540
Intangible assets, accumulated amortization	19,250	11,954
Intangible assets, net	51,290	58,586
Trade Names [Member]
Intangible assets, gross	2,310	2,310
Intangible assets, accumulated amortization	1,234	888
Intangible assets, net	1,076	1,422
Patents [Member]
Intangible assets, gross	1,579	1,579
Intangible assets, accumulated amortization	846	734
Intangible assets, net	733	845
Computer Software, Intangible Asset [Member]
Intangible assets, gross	62,899	47,039
Intangible assets, accumulated amortization	29,611	18,226
Intangible assets, net	33,288	28,813
In Process Research and Development [Member]
Intangible assets, gross		60,500
Intangible assets, accumulated amortization
Intangible assets, net		$ 60,500

Note 7 - Identifiable Intangi_5

Note 7 - Identifiable Intangible Assets - Amortization (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Cost of goods sold	$ 9,723	$ 7,249	$ 23,121	$ 21,749
	17,364	14,616	45,013	43,527
Research and Development Expense [Member]
Amortization of intangible assets	5,058	4,777	14,138	13,999
Selling and Marketing Expense [Member]
Amortization of intangible assets	2,432	2,432	7,296	7,295
General and Administrative Expense [Member]
Amortization of intangible assets	$ 151	$ 158	$ 458	$ 484

Note 7 - Identifiable Intangi_6

Note 7 - Identifiable Intangible Assets - Expected Amortization Expense (Details) $ in Thousands	Sep. 30, 2018USD ($)
2018 (remaining)	$ 17,363
2,019	66,882
2,020	38,841
2,021	32,887
2,022	24,261
Thereafter	16,299
Total amortization expense	$ 196,533

Note 7 - Identifiable Intangi_7

Note 7 - Identifiable Intangible Assets - Weighted-average Amortization Periods Remaining (Details)	9 Months Ended
	Sep. 30, 2018
Developed Technology Rights [Member]
Finite-lived intangible assets, remaining amortization period (Year)	3 years 255 days
Customer Relationships [Member]
Finite-lived intangible assets, remaining amortization period (Year)	5 years 109 days
Trade Names [Member]
Finite-lived intangible assets, remaining amortization period (Year)	2 years 292 days
Patents [Member]
Finite-lived intangible assets, remaining amortization period (Year)	8 years 73 days
Computer Software, Intangible Asset [Member]
Finite-lived intangible assets, remaining amortization period (Year)	1 year 328 days

Note 8 - Product Warranty Obl_2

Note 8 - Product Warranty Obligation (Details Textual) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017	Dec. 31, 2017
Standard and Extended Product Warranty Accrual, Ending Balance	$ 110		$ 110		$ 110
Standard and Extended Product Warranty Accrual, Period Increase (Decrease), Total	$ 0	$ 0	$ 0	$ 0

Note 9 - Convertible Debt (Deta

Note 9 - Convertible Debt (Details Textual) - Convertible Debt [Member] $ / shares in Units, $ in Thousands	1 Months Ended		3 Months Ended		9 Months Ended
	Sep. 30, 2016USD ($)$ / shares$ / item	Dec. 31, 2015USD ($)$ / shares$ / item	Sep. 30, 2018USD ($)	Sep. 30, 2017USD ($)	Sep. 30, 2018USD ($)	Sep. 30, 2017USD ($)
Convertible Notes 2015 [Member]
Debt Instrument, Face Amount		$ 230,000
Debt Instrument, Interest Rate, Stated Percentage		1.125%
Debt Instrument, Convertible, Conversion Ratio		24.8988
Debt Instrument, Convertible, Conversion Price | $ / shares		$ 40.16
Interest Expense, Debt, Total			$ 3,652	$ 3,443	$ 10,685	$ 10,075
Interest Expense, Debt, Excluding Amortization			650	650	1,936	1,936
Amortization of Debt Discount (Premium)			2,754	2,562	8,026	7,467
Amortization of Debt Issuance Costs			248	231	723	672
Convertible Debt in Default, Percent Holders to Declare Due and Payable		100.00%
Derivative, Cap Price | $ / item		52.06
Convertible Notes 2016 [Member]
Debt Instrument, Face Amount	$ 287,500
Debt Instrument, Interest Rate, Stated Percentage	0.75%
Debt Instrument, Convertible, Conversion Ratio	17.7508
Debt Instrument, Convertible, Conversion Price | $ / shares	$ 56.34
Interest Expense, Debt, Total			4,253	3,999	12,425	11,684
Interest Expense, Debt, Excluding Amortization			542	542	1,608	1,606
Amortization of Debt Discount (Premium)			3,430	3,195	9,998	9,315
Amortization of Debt Issuance Costs			$ 281	$ 262	$ 819	$ 763
Convertible Debt in Default, Percent Holders to Declare Due and Payable	100.00%
Derivative, Cap Price | $ / item	73.03

Note 10 - Other Liabilities - O

Note 10 - Other Liabilities - Other Current Liabilities (Details) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Obligations under capital lease	$ 459	$ 539
Intangible asset liability	21,231	16,892
Others	1,809	3,956
Other current liabilities	$ 23,499	$ 21,387

Note 10 - Other Liabilities -_2

Note 10 - Other Liabilities - Other Long-term Liabilities (Details) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Deferred rent	$ 1,187	$ 1,487
Income tax payable	687	830
Obligations under capital lease	520	857
Intangible asset liability	11,539	14,445
Deferred tax liabilities		6,146
Others	761	862
Total other long-term liabilities	$ 14,694	$ 24,627

Note 11 - Income Taxes (Details

Note 11 - Income Taxes (Details Textual) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Income Tax Expense (Benefit), Total	$ (203)	$ (10,182)	$ (8,406)	$ (9,359)
Effective Income Tax Rate Reconciliation, Percent, Total	1.00%	17.00%	10.00%	11.00%
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent	21.00%	34.00%	21.00%	34.00%
Unrecognized Tax Benefits, Increase Resulting from Current Period Tax Positions	$ 1,196		$ 5,404
Decrease in Unrecognized Tax Benefits is Reasonably Possible	$ 51		$ 51

Note 12 - Earnings Per Share -

Note 12 - Earnings Per Share - Securities Not Included in Computation of Earnings Per Share (Details) - shares	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Anti-dilutive securities (in shares)	14,961,818	14,851,977	14,937,036	15,417,058
Employee Stock Option [Member]
Anti-dilutive securities (in shares)	1,186,358	1,430,497	1,220,323	1,479,810
Restricted Stock [Member]
Anti-dilutive securities (in shares)	2,945,422	2,591,442	2,886,675	3,107,210
Convertible Debt Securities [Member]
Anti-dilutive securities (in shares)	10,830,038	10,830,038	10,830,038	10,830,038

Note 13 - Stock-based Compens_3

Note 13 - Stock-based Compensation (Details Textual) - USD ($) $ in Thousands	1 Months Ended		3 Months Ended		9 Months Ended
	Jan. 31, 2018	Dec. 31, 2011	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017	Dec. 31, 2017
Common Stock, Capital Shares Reserved for Future Issuance			4,493,952		4,493,952
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross			0	0	0	0
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Intrinsic Value					$ 3,887	$ 8,796
Proceeds from Stock Options Exercised					$ 522	$ 1,514
Stock Issued During Period, Shares, Employee Stock Purchase Plans					283,493	171,099
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Total			$ 130,504		$ 130,504
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition					2 years 211 days
Employee Stock Purchase Plan [Member]
Maximum Percentage of Aggregate Cash Compensation for Purchase of Stock Using Payroll Deduction		15.00%
Purchase Price PerShare as Percentage of Market Value		85.00%
Percentage of Combined Voting Power or Value of All Classes of Stock Not Eligible to Participate		5.00%
Fair Value of Common Stock in Calendar Year per Employee Not Eligible to Participate		$ 25
Maximum Aggregate Number of Shares of Common Stock Available for Purchase under Employee Stock Purchase Plan					2,750,000
Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period					4 years
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period					1,241,495
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number, Ending Balance			4,268,703		4,268,703		3,987,552
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period					2,065,066
Performance Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period					4 years
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period					92,205
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number, Ending Balance			123,984		123,984
Market Value Stock Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period	801,000
Market Value Stock Units, Performance Period	3 years
Market Value Stock Units [Member] | Minimum [Member]
Percentage of Target Number of Shares	0.00%
Market Value Stock Units [Member] | Maximum [Member]
Percentage of Target Number of Shares	225.00%

Note 13 - Stock-based Compens_4

Note 13 - Stock-based Compensation - Options Outstanding (Details) - USD ($) $ / shares in Units, $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2018	Dec. 31, 2017
Number of shares outstanding (in shares)	1,346,863
Number of shares outstanding, weighted-average exercise price (in dollars per share)	$ 11.67
Number of shares outstanding, weighted-average remaining contractual life (Year)	2 years 310 days	3 years 94 days
Number of shares outstanding, aggregate intrinsic value	$ 29,723	$ 33,578
Number of shares exercised (in shares)	(164,302)
Number of shares exercised, weighted-average exercise price (in dollars per share)	$ 3.21
Number of shares outstanding (in shares)	1,182,561	1,346,863
Number of shares outstanding, weighted-average exercise price (in dollars per share)	$ 12.85	$ 11.67
Vested and expected to vest in the future (in shares)	1,182,561
Number of shares vested and expected to vest in the future, weighted-average exercise price (in dollars per share)	$ 12.85
Number of shares vested and expected to vest in the future, weighted-average remaining contractual life (Year)	2 years 310 days
Number of shares vested and expected to vest in the future, aggregate intrinsic value	$ 29,723

Note 13 - Stock-based Compens_5

Note 13 - Stock-based Compensation - Outstanding Restricted Stock Units (Details) - Restricted Stock Units (RSUs) [Member]	9 Months Ended
	Sep. 30, 2018$ / sharesshares
Outstanding (in shares)	3,987,552
Outstanding, weighted-average grant date fair value (in dollars per share) | $ / shares	$ 34.48
Granted (in shares)	2,065,066
Granted, weighted-average grant date fair value (in dollars per share) | $ / shares	$ 31.58
Vested (in shares)	(1,241,495)
Vested, weighted-average grant date fair value (in dollars per share) | $ / shares	$ 28.72
Canceled (in shares)	(542,420)
Canceled, weighted-average grant date fair value (in dollars per share) | $ / shares	$ 36.68
Outstanding (in shares)	4,268,703
Outstanding, weighted-average grant date fair value (in dollars per share) | $ / shares	$ 34.48
Expected to vest (in shares)	4,157,753

Note 13 - Stock-based Compens_6

Note 13 - Stock-based Compensation - Assumptions Valuation for Market Value Stock Units (Details) - Market Value Stock Units [Member] $ / shares in Units, $ in Thousands	9 Months Ended
	Sep. 30, 2018USD ($)$ / sharesshares
Total target shares (in shares) | shares	336,000
Fair value per share (in dollars per share) | $ / shares	$ 55.81
Total amount to be recognized over the performance period | $	$ 18,752
Risk free interest rate	2.29%
Expected volatility	47.52%
Dividend yield

Note 13 - Stock-based Compens_7

Note 13 - Stock-based Compensation - Fair Value of Employee Stock Purchase Plan (Details) - Employee Stock Purchase Plan [Member] - $ / shares	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Risk-free interest rate	2.24%	1.13%	2.01%	0.94%
Expected life (Year)	182 days	182 days	182 days	182 days
Dividend yield
Expected volatility	45.00%	45.00%	46.00%	42.00%
Estimated fair value (in dollars per share)	$ 9.29	$ 10.04	$ 8.35	$ 11.03

Note 13 - Stock-based Compens_8

Note 13 - Stock-based Compensation - Stock-based Compensation Expense (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Stock-based compensation expense	$ 16,740	$ 11,893	$ 47,509	$ 32,368
Cost of Sales [Member]
Stock-based compensation expense	636	556	1,810	1,654
Research and Development Expense [Member]
Stock-based compensation expense	9,614	7,770	27,853	20,959
Selling and Marketing Expense [Member]
Stock-based compensation expense	3,702	2,247	10,185	6,048
General and Administrative Expense [Member]
Stock-based compensation expense	$ 2,788	$ 1,320	$ 7,661	$ 3,707

Note 14 - Fair Value Measurem_3

Note 14 - Fair Value Measurements - Assets and Liabilities Carried at Fair Value on Recurring Basis (Details) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Total fair value of assets	$ 330,115	$ 325,132
Convertible Notes	549,476	555,200
Fair Value, Inputs, Level 1 [Member]
Total fair value of assets	42	31
Convertible Notes
Fair Value, Inputs, Level 2 [Member]
Total fair value of assets	330,073	325,101
Convertible Notes	549,476	555,200
Money Market Funds [Member]
Cash equivalents	949	3,332
Money Market Funds [Member] | Fair Value, Inputs, Level 1 [Member]
Cash equivalents	42	31
Money Market Funds [Member] | Fair Value, Inputs, Level 2 [Member]
Cash equivalents	907	3,301
Commercial Paper [Member]
Cash equivalents	106,605	76,456
Investment in marketable securities	34,361	56,994
Commercial Paper [Member] | Fair Value, Inputs, Level 1 [Member]
Cash equivalents
Investment in marketable securities
Commercial Paper [Member] | Fair Value, Inputs, Level 2 [Member]
Cash equivalents	106,605	76,456
Investment in marketable securities	34,361	56,994
Municipal Bonds [Member]
Cash equivalents		999
Investment in marketable securities	12,491	27,657
Municipal Bonds [Member] | Fair Value, Inputs, Level 1 [Member]
Cash equivalents
Investment in marketable securities
Municipal Bonds [Member] | Fair Value, Inputs, Level 2 [Member]
Cash equivalents		999
Investment in marketable securities	12,491	27,657
Corporate Debt Securities [Member]
Cash equivalents		2,608
Investment in marketable securities	137,122	146,401
Corporate Debt Securities [Member] | Fair Value, Inputs, Level 1 [Member]
Cash equivalents
Investment in marketable securities
Corporate Debt Securities [Member] | Fair Value, Inputs, Level 2 [Member]
Cash equivalents		2,608
Investment in marketable securities	137,122	146,401
Variable Rate Demand Note [Member]
Investment in marketable securities	4,500	3,500
Variable Rate Demand Note [Member] | Fair Value, Inputs, Level 1 [Member]
Investment in marketable securities
Variable Rate Demand Note [Member] | Fair Value, Inputs, Level 2 [Member]
Investment in marketable securities	4,500	3,500
Asset-backed Securities [Member]
Investment in marketable securities	34,087	7,185
Asset-backed Securities [Member] | Fair Value, Inputs, Level 1 [Member]
Investment in marketable securities
Asset-backed Securities [Member] | Fair Value, Inputs, Level 2 [Member]
Investment in marketable securities	$ 34,087	$ 7,185

Note 15 - Segment and Geograp_3

Note 15 - Segment and Geographic Information (Details Textual) $ in Thousands	9 Months Ended
	Sep. 30, 2018USD ($)	Dec. 31, 2017USD ($)
Number of Reportable Segments	1
Non-US [Member]
Long-Lived Assets	$ 29,561	$ 8,695
TAIWAN, PROVINCE OF CHINA
Long-Lived Assets	$ 26,271	$ 4,647

Note 15 - Segment and Geograp_4

Note 15 - Segment and Geographic Information - Revenue by Geographic Region (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Revenue	$ 78,009	$ 84,511	$ 207,959	$ 262,518
CHINA
Revenue	31,723	20,435	70,710	80,990
UNITED STATES
Revenue	25,746	31,985	72,710	63,029
THAILAND
Revenue	10,687	14,447	26,807	38,185
Other Country [Member]
Revenue	$ 9,853	$ 17,644	$ 37,732	$ 80,314

Note 16 - Commitments and Con_3

Note 16 - Commitments and Contingencies (Details Textual) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017	Dec. 31, 2017
Operating Leases, Rent Expense, Net, Total	$ 1,142	$ 1,709	$ 4,590	$ 5,075
Value of Open Purchase Orders	9,030		9,030
Indemnification Agreement [Member]
Loss Contingency Accrual, Ending Balance	0		0		$ 0
Customers vs ClariPhy Communications Inc. [Member]
Litigation Settlement, Amount Awarded to Other Party			8,000
Amount Refunded from Escrow			4,875
Customers vs ClariPhy Communications Inc. [Member] | General and Administrative Expense [Member]
Gain (Loss) Related to Litigation Settlement, Total			(2,125)
Equipment and Software Licenses [Member]
Purchase Obligation, Total	1,339		1,339
Mask [Member]
Purchase Obligation, Total	$ 804		$ 804

Note 16 - Commitments and Con_4

Note 16 - Commitments and Contingencies - Future Minimum Lease Payments Under Noncancelable Operating Leases (Details) $ in Thousands	Sep. 30, 2018USD ($)
2018 (remaining)	$ 1,639
2,019	5,553
2,020	2,724
2,021	1,967
2,022	1,723
Thereafter	3,317
Total	$ 16,923