INPHI 10-Q 7 Aug 18 2018 Q2 Quarterly report Financial data

Document And Entity Information

Document And Entity Information - shares	6 Months Ended
	Jun. 30, 2018	Aug. 03, 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 Voluntary Filers	No
Entity Well-known Seasoned Issuer	Yes
Entity Common Stock, Shares Outstanding (in shares)		43,850,494
Document Type	10-Q
Document Period End Date	Jun. 30, 2018
Document Fiscal Year Focus	2,018
Document Fiscal Period Focus	Q2
Amendment Flag	false

Unaudited Condensed Consolidate

Unaudited Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Current assets:
Cash and cash equivalents	$ 155,142	$ 163,450
Investments in marketable securities	228,639	241,737
Accounts receivable, net	54,087	67,993
Inventories	33,849	31,721
Prepaid expenses and other current assets	13,946	12,208
Total current assets	485,663	517,109
Property and equipment, net	68,978	60,344
Goodwill	104,502	104,502
Identifiable intangible assets, net	213,754	222,933
Other assets, net	30,961	12,618
Total assets	903,858	917,506
Current liabilities:
Accounts payable	16,219	14,721
Deferred revenue	317	435
Accrued employee expenses	10,984	15,214
Other accrued expenses	6,042	8,290
Other current liabilities	31,907	21,387
Total current liabilities	65,469	60,047
Convertible debt	434,284	421,431
Other long-term liabilities	21,653	24,627
Total liabilities	521,406	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; 43,814,343 and 42,780,229 issued and outstanding at June 30, 2018 and December 31, 2017, respectively	44	43
Additional paid-in capital	507,575	484,934
Accumulated deficit	(125,600)	(74,145)
Accumulated other comprehensive income	433	569
Total stockholders’ equity	382,452	411,401
Total liabilities and stockholders’ equity	$ 903,858	$ 917,506

Unaudited Condensed Consolidat3

Unaudited Condensed Consolidated Balance Sheets (Parentheticals) - $ / shares	Jun. 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)	43,814,343	42,780,229
Common stock, outstanding (in shares)	43,814,343	42,780,229

Unaudited Condensed Consolidat4

Unaudited Condensed Consolidated Statements of Income (Loss) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Revenue	$ 69,814	$ 84,423	$ 129,950	$ 178,007
Cost of revenue	30,203	36,588	57,793	76,659
Gross profit	39,611	47,835	72,157	101,348
Operating expenses:
Research and development	42,804	39,437	85,742	79,725
Sales and marketing	10,311	10,539	21,653	21,480
General and administrative	8,415	5,798	14,633	12,593
Total operating expenses	61,530	55,774	122,028	113,798
Loss from operations	(21,919)	(7,939)	(49,871)	(12,450)
Interest expense	(7,953)	(7,377)	(15,668)	(14,542)
Other income, net	1,466	720	5,881	1,575
Loss before income taxes	(28,406)	(14,596)	(59,658)	(25,417)
Provision (benefit) for income taxes	58	371	(8,203)	823
Net loss	$ (28,464)	$ (14,967)	$ (51,455)	$ (26,240)
Earnings per share:
Basic earnings per share (in dollars per share)	$ (0.65)	$ (0.36)	$ (1.19)	$ (0.63)
Diluted earnings per share (in dollars per share)	$ (0.65)	$ (0.36)	$ (1.19)	$ (0.63)
Weighted-average shares used in computing earnings per share:
Basic (in shares)	43,661,325	42,137,084	43,331,906	41,855,510
Diluted (in shares)	43,661,325	42,137,084	43,331,906	41,855,510

Unaudited Condensed Consolidat5

Unaudited Condensed Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Net loss	$ (28,464)	$ (14,967)	$ (51,455)	$ (26,240)
Other comprehensive income (loss):
Change in unrealized gain or loss, net of tax	137	(2)	(135)	224
Realized loss (gain) reclassified into earnings, net of tax	1		(1)
Comprehensive loss	$ (28,326)	$ (14,969)	$ (51,591)	$ (26,016)

Unaudited Condensed Consolidat6

Unaudited Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
Cash flows from operating activities
Net loss	$ (51,455)	$ (26,240)
Adjustments to reconcile net loss to net cash provided by operating activities:
Depreciation and amortization	37,445	38,807
Stock-based compensation	30,769	20,475
Deferred income taxes	(8,598)	18
Accretion of convertible debt and amortization of debt issuance costs	12,853	11,968
Net unrealized gain on equity investments	(2,857)
Amortization of premium (discount) on marketable securities	(190)	724
Other noncash items	373	(52)
Changes in assets and liabilities:
Accounts receivable	13,906	(12,714)
Inventories	(2,128)	(2,417)
Prepaid expenses and other assets	(4,160)	402
Income tax payable/receivable	(1,420)	468
Accounts payable	316	4,450
Accrued expenses	(6,408)	(3,674)
Deferred revenue	(118)	2,146
Other liabilities	7,784	(4,727)
Net cash provided by operating activities	26,112	29,634
Cash flows from investing activities
Purchases of property and equipment	(17,718)	(18,309)
Purchases of marketable securities	(124,826)	(105,439)
Sales of marketable securities	3,681	35,270
Maturities of marketable securities	134,155	102,230
Payment of debt related to purchase of intangible assets	(11,259)	(9,544)
Remaining payment related to acquisition of business		(1,800)
Purchase of equity investment	(12,811)
Proceeds from sale of equity investment	2,414
Other investing activity	125	100
Net cash provided by (used in) investing activities	(26,239)	2,508
Cash flows from financing activities
Proceeds from exercise of stock options	489	1,485
Proceeds from employee stock purchase plan	3,704	2,814
Payment of capital lease obligations	(296)	(421)
Repayment of long-term loan	216	180
Minimum tax withholding paid on behalf of employees for restricted stock units	(12,294)	(18,777)
Net cash used in financing activities	(8,181)	(14,719)
Net increase (decrease) in cash and cash equivalents	(8,308)	17,423
Cash and cash equivalents at beginning of period	163,450	144,867
Cash and cash equivalents at end of period	155,142	162,290
Supplemental cash flow information:
Income taxes paid	1,808	332
Interest paid	2,837	2,300
Supplemental disclosure of non-cash investing and financing activities:
Intangible assets financed with debt	$ 18,468	$ 2,433

Note 1 - Organization and Basis

Note 1 - Organization and Basis of Presentation	6 Months Ended
	Jun. 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 June 30, 2018, three six June 30, 2018 2017 six June 30, 2018 2017. three six June 30, 2018 not

Note 2 - Recent Accounting Pron

Note 2 - Recent Accounting Pronouncements	6 Months Ended
	Jun. 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.

Note 3 - Revenue

Note 3 - Revenue	6 Months Ended
	Jun. 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 six June 30, 2018 $387 $3,173, three six June 30, 2018 $88 $542, $3,173 $542 June 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 June 30, Six Months Ended June 30, 2018 2017 2018 2017 China $ 25,304 $ 22,835 $ 38,987 $ 60,555 United States 18,561 18,834 46,963 31,043 Singapore 225 10,221 1,156 14,522 Thailand 12,895 9,885 16,120 23,738 Japan 2,418 9,960 4,141 20,654 Other 10,411 12,688 22,583 27,495 $ 69,814 $ 84,423 $ 129,950 $ 178,007 Product Revenue The Company’s products are fully functional at the time of shipment and do not may not June 30, 2018, $682. 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	6 Months Ended
	Jun. 30, 2018
Notes to Financial Statements
Investment [Text Block]	4 . Investments The following table summarizes the investments by investment category: June 30, 201 8 December 31, 201 7 Cost Fair Value Cost Fair Value Available-for-sale securities: Municipal bonds $ 19,599 $ 19,562 $ 27,725 $ 27,657 Corporate notes/bonds 138,357 138,066 146,549 146,401 Variable rate demand notes 3,500 3,500 3,500 3,500 Commercial paper 42,628 42,627 57,006 56,994 Asset backed securities 24,935 24,884 7,197 7,185 Total investments $ 229,019 $ 228,639 $ 241,977 $ 241,737 As of June 30, 2018, 84 June 30, 2018 $429 The contractual maturities of available-for-sale securities at June 30, 2018 Cost Fair Value Due in one year or less $ 157,104 $ 156,919 Due between one and five years 68,415 68,220 Due after five years 3,500 3,500 $ 229,019 $ 228,639 The Company has a marketable equity investment in a company located in Taiwan. The fair value of the investment and unrealized loss as of June 30, 2018 $1,803 $192, 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 June 30, 2018, $23,866, $6,066 six June 30, 2018. June 30, 2018 $3,066 six June 30, 2018.

Note 5 - Inventories

Note 5 - Inventories	6 Months Ended
	Jun. 30, 2018
Notes to Financial Statements
Inventory Disclosure [Text Block]	5 . Inventories Inventories consist of the following: June 30, 201 8 December 31, 201 7 Raw materials $ 15,134 $ 12,267 Work in process 13,826 13,800 Finished goods 4,889 5,654 $ 33,849 $ 31,721

Note 6 - Property and Equipment

Note 6 - Property and Equipment, Net	6 Months Ended
	Jun. 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: June 30, 201 8 December 31, 201 7 Laboratory and production equipment $ 112,121 $ 94,609 Office, software and computer equipment 28,894 28,594 Furniture and fixtures 1,530 1,698 Leasehold improvements 7,592 7,250 150,137 132,151 Less accumulated depreciation (81,159 ) (71,807 ) $ 68,978 $ 60,344 Depreciation and amortization expense of property and equipment for the three six June 30, 2018 $4,753 $9,796, three six June 30, 2017 $5,028 $9,899, As of June 30, 2018 December 31, 2017, $7,236 $7,181, $159 $345 three six June 30, 2018, $262 $539 three six June 30, 2017, Property and equipment not June 30, 2018 December 31, 2017 $4,426 $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 June 30, 2018 $3,639 $1,329, December 31, 2017 $3,639 $898, The minimum lease payments under capital leases as of June 30, 2018 2018 (remaining) $ 300 2019 501 2020 364 2021 94 Total minimum lease payments 1,259 Less: Amount representing interest 159 Minimum lease payments, net of interest $ 1,100

Note 7 - Identifiable Intangibl

Note 7 - Identifiable Intangible Assets	6 Months Ended
	Jun. 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: June 30, 201 8 December 31, 201 7 Gross Accumulated Amortization Net Gross Accumulated Amortization Net Developed technology $ 126,300 $ 66,931 $ 59,369 $ 126,300 $ 53,533 $ 72,767 Customer relationships 70,540 16,818 53,722 70,540 11,954 58,586 Trade name 2,310 1,119 1,191 2,310 888 1,422 Patents 1,579 811 768 1,579 734 845 Software 62,841 24,637 38,204 47,039 18,226 28,813 In-process research and development 60,500 — 60,500 60,500 — 60,500 $ 324,070 $ 110,316 $ 213,754 $ 308,268 $ 85,335 $ 222,933 The in-process research and development is expected to be completed in the second 2018. The following table presents amortization of intangible assets for the three six June 30, 2018 2017: Three Months Ended June 30, Six Months Ended June 30, 201 8 201 7 201 8 201 7 Cost of goods sold $ 6,699 $ 7,249 $ 13,398 $ 14,499 Research and development 4,524 4,515 9,079 9,221 Sales and marketing 2,432 2,432 4,864 4,864 General and administrative 152 163 308 324 $ 13,807 $ 14,359 $ 27,649 $ 28,908 Based on the amount of intangible assets subject to amortization at June 30, 2018, five 2018 (remaining) $ 28,612 2019 54,704 2020 26,741 2021 20,787 2022 12,161 Thereafter 10,249 $ 153,254 The weighted-average amortization periods remaining by intangible asset category are as follows (in years): Developed technology 2.7 Customer relationship 5.5 Trade name 3.0 Patents 8.3 Software 2.1

Note 8 - Product Warranty Oblig

Note 8 - Product Warranty Obligation	6 Months Ended
	Jun. 30, 2018
Notes to Financial Statements
Product Warranty Disclosure [Text Block]	8 . Product Warranty Obligation As of June 30, 2018 December 31, 2017, $110. no three six June 30, 2018 2017.

Note 9 - Convertible Debt

Note 9 - Convertible Debt	6 Months Ended
	Jun. 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 June 30, 2018 $3,564, $646 $2,677 $241 six June 30, 2018 $7,033, $1,286 $5,272 $475 three June 30, 2017 $3,360, $645 $2,490 $225 six June 30, 2017 $6,632, $1,285 $4,905 $442 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 June 30, 2018 $4,138, $533 $3,332 $273 six June 30, 2018 $8,172, $1,066 $6,568 $538 three June 30, 2017 $3,892, $533 $3,104 $255 six June 30, 2017 $7,686, $1,065 $6,120 $501 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	6 Months Ended
	Jun. 30, 2018
Notes to Financial Statements
Other Liabilities Disclosure [Text Block]	10 . Other liabilities Other current liabilities consist of the following: June 30, 201 8 December 31, 201 7 Obligations under capital lease $ 483 $ 539 Intangible asset liability 20,827 16,892 Settlement claim liability 8,114 — Others 2,483 3,956 $ 31,907 $ 21,387 Other long-term liabilities consist of the following: June 30, 201 8 December 31, 201 7 Deferred rent $ 1,394 $ 1,487 Income tax payable 736 830 Obligations under capital lease 617 857 Intangible asset liability 17,719 14,445 Deferred tax liabilities — 6,146 Others 1,187 862 $ 21,653 $ 24,627

Note 11 - Income Taxes

Note 11 - Income Taxes	6 Months Ended
	Jun. 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 six June 30, 2018 2017 not The Company recorded an income tax provision (benefit) of $58 $8,203 three six June 30, 2018, 0.2% 13.7% three six June 30, 2018, 21% 34% three six June 30, 2018 2017, December 2017. three June 30, 2018, six June 30, 2018, 2018 The Company recorded an income tax provision of $371 $823 three six June 30, 2017, three six June 30, 2017 3% 34% During the three six June 30, 2018, $2,949 $4,209, June 30, 2018, no twelve may $61 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 made significant changes to U.S. federal corporate taxation, including a reduction of the corporate tax rate from 35% 21% January 1, 2018, one December 31, 2017, three six June 30, 2018, no fourth 2017. In January 2018, not three six June 30, 2018, not

Note 12 - Earnings Per Share

Note 12 - Earnings Per Share	6 Months Ended
	Jun. 30, 2018
Notes to Financial Statements
Earnings Per Share [Text Block]	1 2 . Earnings Per Share The following securities were not Three Months Ended June 30, Six Months Ended June 30, 201 8 201 7 201 8 201 7 Common stock options 1,197,891 1,436,718 1,237,305 1,504,466 Unvested restricted stock unit 2,993,650 2,591,673 2,857,301 3,365,095 Convertible debt 10,830,038 10,830,038 10,830,038 10,830,038 15,021,579 14,858,429 14,924,644 15,699,599

Note 13 - Stock-based Compensat

Note 13 - Stock-based Compensation	6 Months Ended
	Jun. 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 June 30, 2018, 4,342,913 2010 Stock Option Awards The Company did not three six June 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 (158,304 ) 3.09 Outstanding at June 30 , 201 8 1,188,559 $ 12.81 3.11 $ 23,531 Vested and e xercisable at June 30 , 201 8 1,188,559 $ 12.81 3.11 $ 23,531 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 six June 30, 2018 2017 $3,711 $8,635, $489 $1,485, six June 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 2,043,687 31.56 Vested (1,092,258 ) 28.72 Canceled (388,410 ) 37.65 Outstanding at June 30 , 201 8 4,550,571 $ 34.28 Expected to vest at June 30 , 201 8 4,416,021 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 six June 30, 2018 87,830. June 30, 2018, 128,359. Market Value Stock Units In January 2018, 801,000 may 0% 225% 500 three first 2021 2020 may three three Total target shares 356,000 Fair value per share $ 55.81 Total amount to be recognized over the performance period $ 19,868 Risk free interest rate 2.29 % Expected volatility 47.52 % Dividend yield — Employee Stock Purchase Plan In December 2011, 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 1,750,000 six June 30, 2018 2017 177,771 78,348, 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: Six Months Ended June 30, 2018 2017 Risk-free interest rate 1.79 % 0.65 % Expected life (in years) 0.49 0.50 Dividend yield — — Expected volatility 48 % 38 % Estimated fair value $ 7.42 $ 12.58 Stock-Based Compensation Expense Stock-based compensation expense is included in the Company’s results of operations as follows: Three Months Ended June 30, Six Months Ended June 30, 201 8 201 7 201 8 201 7 Operating expenses Cost of goods sold $ 605 $ 537 $ 1,174 $ 1,098 Research and development 9,741 7,274 18,239 13,189 Sales and marketing 3,241 2,119 6,483 3,801 General and administrative 2,629 1,315 4,873 2,387 $ 16,216 $ 11,245 $ 30,769 $ 20,475 Total unrecognized compensation cost related to unvested stock options, restricted stock units and awards at June 30, 2018, $152,507 2.77

Note 14 - Fair Value Measuremen

Note 14 - Fair Value Measurements	6 Months Ended
	Jun. 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 six June 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 June 30, 2018 December 31, 2017, 2 The following table presents information about assets required to be carried at fair value on a recurring basis: June 30, 201 8 Total Level 1 Level 2 Assets Cash equivalents: Money market funds $ 5,465 $ 61 $ 5,404 Commercial paper 94,056 — 94,056 Investment in marketable securities: Municipal bonds 19,562 — 19,562 Corporate notes/bonds 138,066 — 138,066 Variable rate demand notes 3,500 — 3,500 Asset backed securities 24,884 — 24,884 Commercial paper 42,627 — 42,627 $ 328,160 $ 61 $ 328,099 Liabilities Convertible Notes $ 519,327 $ — $ 519,327 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	6 Months Ended
	Jun. 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 June 30, Six Months Ended June 30, 2018 2017 2018 2017 China $ 25,304 $ 22,835 $ 38,987 $ 60,555 United States 18,561 18,834 46,963 31,043 Singapore 225 10,221 1,156 14,522 Thailand 12,895 9,885 16,120 23,738 Japan 2,418 9,960 4,141 20,654 Other 10,411 12,688 22,583 27,495 $ 69,814 $ 84,423 $ 129,950 $ 178,007 As of June 30, 2018, $31,764 $28,073 December 31, 2017, $8,695 $4,647

Note 16 - Commitments and Conti

Note 16 - Commitments and Contingencies	6 Months Ended
	Jun. 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 June 30, 2018, one 2018 (remaining) $ 3,223 2019 5,623 2020 2,838 2021 1,981 2022 1,723 Thereafter 3,319 $ 18,707 For the three six June 30, 2018, $1,708 $3,448, three six June 30, 2017, $1,744 $3,366, Noncancelable Purchase Obligations The Company depends upon third June 30, 2018, $6,617. June 30, 2018, $1,339 $560 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. The Company entered into settlement agreements related to claims by certain customers of ClariPhy Communications Inc. (ClariPhy) associated with contracts entered prior to the acquisition date under which the Company will pay $8,000 $4,875 $2,125 three six June 30, 2018 Indemnifications In the ordinary course of business, the Company may not third may may not not no June 30, 2018 December 31, 2017.

Significant Accounting Policies

Significant Accounting Policies (Policies)	6 Months Ended
	Jun. 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.

Note 3 - Revenue (Tables)

Note 3 - Revenue (Tables)	6 Months Ended
	Jun. 30, 2018
Notes Tables
Disaggregation of Revenue [Table Text Block]	Three Months Ended June 30, Six Months Ended June 30, 2018 2017 2018 2017 China $ 25,304 $ 22,835 $ 38,987 $ 60,555 United States 18,561 18,834 46,963 31,043 Singapore 225 10,221 1,156 14,522 Thailand 12,895 9,885 16,120 23,738 Japan 2,418 9,960 4,141 20,654 Other 10,411 12,688 22,583 27,495 $ 69,814 $ 84,423 $ 129,950 $ 178,007

Note 4 - Investments (Tables)

Note 4 - Investments (Tables)	6 Months Ended
	Jun. 30, 2018
Notes Tables
Debt Securities, Available-for-sale [Table Text Block]	June 30, 201 8 December 31, 201 7 Cost Fair Value Cost Fair Value Available-for-sale securities: Municipal bonds $ 19,599 $ 19,562 $ 27,725 $ 27,657 Corporate notes/bonds 138,357 138,066 146,549 146,401 Variable rate demand notes 3,500 3,500 3,500 3,500 Commercial paper 42,628 42,627 57,006 56,994 Asset backed securities 24,935 24,884 7,197 7,185 Total investments $ 229,019 $ 228,639 $ 241,977 $ 241,737
Investments Classified by Contractual Maturity Date [Table Text Block]	Cost Fair Value Due in one year or less $ 157,104 $ 156,919 Due between one and five years 68,415 68,220 Due after five years 3,500 3,500 $ 229,019 $ 228,639

Note 5 - Inventories (Tables)

Note 5 - Inventories (Tables)	6 Months Ended
	Jun. 30, 2018
Notes Tables
Schedule of Inventory, Current [Table Text Block]	June 30, 201 8 December 31, 201 7 Raw materials $ 15,134 $ 12,267 Work in process 13,826 13,800 Finished goods 4,889 5,654 $ 33,849 $ 31,721

Note 6 - Property and Equipme27

Note 6 - Property and Equipment, Net (Tables)	6 Months Ended
	Jun. 30, 2018
Notes Tables
Property, Plant and Equipment [Table Text Block]	June 30, 201 8 December 31, 201 7 Laboratory and production equipment $ 112,121 $ 94,609 Office, software and computer equipment 28,894 28,594 Furniture and fixtures 1,530 1,698 Leasehold improvements 7,592 7,250 150,137 132,151 Less accumulated depreciation (81,159 ) (71,807 ) $ 68,978 $ 60,344
Schedule of Future Minimum Lease Payments for Capital Leases [Table Text Block]	2018 (remaining) $ 300 2019 501 2020 364 2021 94 Total minimum lease payments 1,259 Less: Amount representing interest 159 Minimum lease payments, net of interest $ 1,100

Note 7 - Identifiable Intangi28

Note 7 - Identifiable Intangible Assets (Tables)	6 Months Ended
	Jun. 30, 2018
Notes Tables
Schedule of Finite-Lived Intangible Assets [Table Text Block]	June 30, 201 8 December 31, 201 7 Gross Accumulated Amortization Net Gross Accumulated Amortization Net Developed technology $ 126,300 $ 66,931 $ 59,369 $ 126,300 $ 53,533 $ 72,767 Customer relationships 70,540 16,818 53,722 70,540 11,954 58,586 Trade name 2,310 1,119 1,191 2,310 888 1,422 Patents 1,579 811 768 1,579 734 845 Software 62,841 24,637 38,204 47,039 18,226 28,813 In-process research and development 60,500 — 60,500 60,500 — 60,500 $ 324,070 $ 110,316 $ 213,754 $ 308,268 $ 85,335 $ 222,933
Finite-lived Intangible Assets Amortization Expense [Table Text Block]	Three Months Ended June 30, Six Months Ended June 30, 201 8 201 7 201 8 201 7 Cost of goods sold $ 6,699 $ 7,249 $ 13,398 $ 14,499 Research and development 4,524 4,515 9,079 9,221 Sales and marketing 2,432 2,432 4,864 4,864 General and administrative 152 163 308 324 $ 13,807 $ 14,359 $ 27,649 $ 28,908
Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block]	2018 (remaining) $ 28,612 2019 54,704 2020 26,741 2021 20,787 2022 12,161 Thereafter 10,249 $ 153,254
Finite Lived Intangible Assets Remaining Amortization Period [Table Text Block]	Developed technology 2.7 Customer relationship 5.5 Trade name 3.0 Patents 8.3 Software 2.1

Note 10 - Other Liabilities (Ta

Note 10 - Other Liabilities (Tables)	6 Months Ended
	Jun. 30, 2018
Notes Tables
Other Current Liabilities [Table Text Block]	June 30, 201 8 December 31, 201 7 Obligations under capital lease $ 483 $ 539 Intangible asset liability 20,827 16,892 Settlement claim liability 8,114 — Others 2,483 3,956 $ 31,907 $ 21,387
Other Noncurrent Liabilities [Table Text Block]	June 30, 201 8 December 31, 201 7 Deferred rent $ 1,394 $ 1,487 Income tax payable 736 830 Obligations under capital lease 617 857 Intangible asset liability 17,719 14,445 Deferred tax liabilities — 6,146 Others 1,187 862 $ 21,653 $ 24,627

Note 12 - Earnings Per Share (T

Note 12 - Earnings Per Share (Tables)	6 Months Ended
	Jun. 30, 2018
Notes Tables
Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table Text Block]	Three Months Ended June 30, Six Months Ended June 30, 201 8 201 7 201 8 201 7 Common stock options 1,197,891 1,436,718 1,237,305 1,504,466 Unvested restricted stock unit 2,993,650 2,591,673 2,857,301 3,365,095 Convertible debt 10,830,038 10,830,038 10,830,038 10,830,038 15,021,579 14,858,429 14,924,644 15,699,599

Note 13 - Stock-based Compens31

Note 13 - Stock-based Compensation (Tables)	6 Months Ended
	Jun. 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 (158,304 ) 3.09 Outstanding at June 30 , 201 8 1,188,559 $ 12.81 3.11 $ 23,531 Vested and e xercisable at June 30 , 201 8 1,188,559 $ 12.81 3.11 $ 23,531
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 2,043,687 31.56 Vested (1,092,258 ) 28.72 Canceled (388,410 ) 37.65 Outstanding at June 30 , 201 8 4,550,571 $ 34.28 Expected to vest at June 30 , 201 8 4,416,021
Schedule of Share-based Payment Award, Equity Instruments Other than Option, Valuation Assumptions [Table Text Block]	Total target shares 356,000 Fair value per share $ 55.81 Total amount to be recognized over the performance period $ 19,868 Risk free interest rate 2.29 % Expected volatility 47.52 % Dividend yield —
Schedule of Share-based Payment Award, Employee Stock Purchase Plan, Valuation Assumptions [Table Text Block]	Six Months Ended June 30, 2018 2017 Risk-free interest rate 1.79 % 0.65 % Expected life (in years) 0.49 0.50 Dividend yield — — Expected volatility 48 % 38 % Estimated fair value $ 7.42 $ 12.58
Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Table Text Block]	Three Months Ended June 30, Six Months Ended June 30, 201 8 201 7 201 8 201 7 Operating expenses Cost of goods sold $ 605 $ 537 $ 1,174 $ 1,098 Research and development 9,741 7,274 18,239 13,189 Sales and marketing 3,241 2,119 6,483 3,801 General and administrative 2,629 1,315 4,873 2,387 $ 16,216 $ 11,245 $ 30,769 $ 20,475

Note 14 - Fair Value Measurem32

Note 14 - Fair Value Measurements (Tables)	6 Months Ended
	Jun. 30, 2018
Notes Tables
Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block]	June 30, 201 8 Total Level 1 Level 2 Assets Cash equivalents: Money market funds $ 5,465 $ 61 $ 5,404 Commercial paper 94,056 — 94,056 Investment in marketable securities: Municipal bonds 19,562 — 19,562 Corporate notes/bonds 138,066 — 138,066 Variable rate demand notes 3,500 — 3,500 Asset backed securities 24,884 — 24,884 Commercial paper 42,627 — 42,627 $ 328,160 $ 61 $ 328,099 Liabilities Convertible Notes $ 519,327 $ — $ 519,327 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 Geograp33

Note 15 - Segment and Geographic Information (Tables)	6 Months Ended
	Jun. 30, 2018
Notes Tables
Revenue from External Customers by Geographic Areas [Table Text Block]	Three Months Ended June 30, Six Months Ended June 30, 2018 2017 2018 2017 China $ 25,304 $ 22,835 $ 38,987 $ 60,555 United States 18,561 18,834 46,963 31,043 Singapore 225 10,221 1,156 14,522 Thailand 12,895 9,885 16,120 23,738 Japan 2,418 9,960 4,141 20,654 Other 10,411 12,688 22,583 27,495 $ 69,814 $ 84,423 $ 129,950 $ 178,007

Note 16 - Commitments and Con34

Note 16 - Commitments and Contingencies (Tables)	6 Months Ended
	Jun. 30, 2018
Notes Tables
Schedule of Future Minimum Rental Payments for Operating Leases [Table Text Block]	2018 (remaining) $ 3,223 2019 5,623 2020 2,838 2021 1,981 2022 1,723 Thereafter 3,319 $ 18,707

Note 2 - Recent Accounting Pr35

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		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017	Jan. 01, 2018	Dec. 31, 2017
Revenue from Contract with Customer, Excluding Assessed Tax, Total	$ 69,814	$ 84,423	$ 129,950	$ 178,007
Cost of Goods and Services Sold, Total	30,203	$ 36,588	57,793	$ 76,659
Inventory, Net, Total	33,849		$ 33,849			$ 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	387		$ 3,173
Cost of Goods and Services Sold, Total	88		542
Deferred Revenue	(3,173)		(3,173)
Inventory, Net, Total	(542)		(542)
Contract with Customer, Refund Liability, Total	$ 682		$ 682

Note 3 - Revenue - Revenue by G

Note 3 - Revenue - Revenue by Geography (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Revenue	$ 69,814	$ 84,423	$ 129,950	$ 178,007
CHINA
Revenue	25,304	22,835	38,987	60,555
UNITED STATES
Revenue	18,561	18,834	46,963	31,043
SINGAPORE
Revenue	225	10,221	1,156	14,522
THAILAND
Revenue	12,895	9,885	16,120	23,738
JAPAN
Revenue	2,418	9,960	4,141	20,654
Other Country [Member]
Revenue	$ 10,411	$ 12,688	$ 22,583	$ 27,495

Note 4 - Investments (Details T

Note 4 - Investments (Details Textual) $ in Thousands	6 Months Ended
	Jun. 30, 2018USD ($)
Debt Securities, Available-for-sale, Unrealized Loss Position, Number of Positions	84
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss, Total	$ 429
Equity Securities, FV-NI	1,803
Equity Securities, FV-NI, Accumulated Gross Unrealized Loss	192
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	Jun. 30, 2018	Dec. 31, 2017
Available-for-sale securities, amortized cost	$ 229,019	$ 241,977
Available-for-sale securities, fair value	228,639	241,737
US States and Political Subdivisions Debt Securities [Member]
Available-for-sale securities, amortized cost	19,599	27,725
Available-for-sale securities, fair value	19,562	27,657
Corporate Debt Securities [Member]
Available-for-sale securities, amortized cost	138,357	146,549
Available-for-sale securities, fair value	138,066	146,401
Variable Rate Demand Note [Member]
Available-for-sale securities, amortized cost	3,500	3,500
Available-for-sale securities, fair value	3,500	3,500
Commercial Paper [Member]
Available-for-sale securities, amortized cost	42,628	57,006
Available-for-sale securities, fair value	42,627	56,994
Asset-backed Securities [Member]
Available-for-sale securities, amortized cost	24,935	7,197
Available-for-sale securities, fair value	$ 24,884	$ 7,185

Note 4 - Investments - Contract

Note 4 - Investments - Contractual Maturities of Available-for-sale Securities (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Due in one year or less, cost	$ 157,104
Due in one year or less, fair value	156,919
Due between one and five years, cost	68,415
Due between one and five years, fair value	68,220
Due after five years, cost	3,500
Due after five years, fair value	3,500
Available-for-sale securities, cost	229,019	$ 241,977
Available-for-sale securities, fair value	$ 228,639	$ 241,737

Note 5 - Inventories - Schedule

Note 5 - Inventories - Schedule of Inventory (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Raw materials	$ 15,134	$ 12,267
Work in process	13,826	13,800
Finished goods	4,889	5,654
Total inventories	$ 33,849	$ 31,721

Note 6 - Property and Equipme42

Note 6 - Property and Equipment, Net (Details Textual) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017	Dec. 31, 2017
Depreciation, Total	$ 4,753	$ 5,028	$ 9,796	$ 9,899
Capitalized Computer Software, Gross	7,236		7,236		$ 7,181
Capitalized Computer Software, Amortization	159	$ 262	345	$ 539
Capital Expenditures Incurred but Not yet Paid			4,426		3,339
Capital Leased Assets, Gross, Total	3,639		3,639		3,639
Capital Leases, Lessee Balance Sheet, Assets by Major Class, Accumulated Depreciation	$ 1,329		$ 1,329		$ 898

Note 6 - Property and Equipme43

Note 6 - Property and Equipment, Net - Property and Equipment Components (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Property and equipment, gross	$ 150,137	$ 132,151
Less accumulated depreciation	(81,159)	(71,807)
Total property and equipment	68,978	60,344
Equipment [Member]
Property and equipment, gross	112,121	94,609
Office, Software, and Computer Equipment [Member]
Property and equipment, gross	28,894	28,594
Furniture and Fixtures [Member]
Property and equipment, gross	1,530	1,698
Leasehold Improvements [Member]
Property and equipment, gross	$ 7,592	$ 7,250

Note 6 - Property and Equipme44

Note 6 - Property and Equipment, Net - Minimum Capital Lease Payments (Details) $ in Thousands	Jun. 30, 2018USD ($)
2018 (remaining)	$ 300
2,019	501
2,020	364
2,021	94
Total minimum lease payments	1,259
Less: Amount representing interest	159
Minimum lease payments, net of interest	$ 1,100

Note 7 - Identifiable Intangi45

Note 7 - Identifiable Intangible Assets - Identifiable Intangible Assets (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Intangible assets, gross	$ 324,070	$ 308,268
Intangible assets, accumulated amortization	110,316	85,335
Intangible assets, net	213,754	222,933
Developed Technology Rights [Member]
Intangible assets, gross	126,300	126,300
Intangible assets, accumulated amortization	66,931	53,533
Intangible assets, net	59,369	72,767
Customer Relationships [Member]
Intangible assets, gross	70,540	70,540
Intangible assets, accumulated amortization	16,818	11,954
Intangible assets, net	53,722	58,586
Trade Names [Member]
Intangible assets, gross	2,310	2,310
Intangible assets, accumulated amortization	1,119	888
Intangible assets, net	1,191	1,422
Patents [Member]
Intangible assets, gross	1,579	1,579
Intangible assets, accumulated amortization	811	734
Intangible assets, net	768	845
Computer Software, Intangible Asset [Member]
Intangible assets, gross	62,841	47,039
Intangible assets, accumulated amortization	24,637	18,226
Intangible assets, net	38,204	28,813
In Process Research and Development [Member]
Intangible assets, gross	60,500	60,500
Intangible assets, accumulated amortization
Intangible assets, net	$ 60,500	$ 60,500

Note 7 - Identifiable Intangi46

Note 7 - Identifiable Intangible Assets - Amortization (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Cost of goods sold	$ 6,699	$ 7,249	$ 13,398	$ 14,499
	13,807	14,359	27,649	28,908
Research and Development Expense [Member]
Amortization of intangible assets	4,524	4,515	9,079	9,221
Selling and Marketing Expense [Member]
Amortization of intangible assets	2,432	2,432	4,864	4,864
General and Administrative Expense [Member]
Amortization of intangible assets	$ 152	$ 163	$ 308	$ 324

Note 7 - Identifiable Intangi47

Note 7 - Identifiable Intangible Assets - Expected Amortization Expense (Details) $ in Thousands	Jun. 30, 2018USD ($)
2018 (remaining)	$ 28,612
2,019	54,704
2,020	26,741
2,021	20,787
2,022	12,161
Thereafter	10,249
Total amortization expense	$ 153,254

Note 7 - Identifiable Intangi48

Note 7 - Identifiable Intangible Assets - Weighted-average Amortization Periods Remaining (Details)	6 Months Ended
	Jun. 30, 2018
Developed Technology Rights [Member]
Finite-lived intangible assets, remaining amortization period (Year)	2 years 255 days
Customer Relationships [Member]
Finite-lived intangible assets, remaining amortization period (Year)	5 years 182 days
Trade Names [Member]
Finite-lived intangible assets, remaining amortization period (Year)	3 years
Patents [Member]
Finite-lived intangible assets, remaining amortization period (Year)	8 years 109 days
Computer Software, Intangible Asset [Member]
Finite-lived intangible assets, remaining amortization period (Year)	2 years 36 days

Note 8 - Product Warranty Obl49

Note 8 - Product Warranty Obligation (Details Textual) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 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		6 Months Ended
	Sep. 30, 2016USD ($)$ / shares$ / item	Dec. 31, 2015USD ($)$ / shares$ / item	Jun. 30, 2018USD ($)	Jun. 30, 2017USD ($)	Jun. 30, 2018USD ($)	Jun. 30, 2017USD ($)
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			$ 3,564	$ 3,360	$ 7,033	$ 6,632
Interest Expense, Debt, Excluding Amortization			646	645	1,286	1,285
Amortization of Debt Discount (Premium)			2,677	2,490	5,272	4,905
Amortization of Debt Issuance Costs			241	225	475	442
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			4,138	3,892	8,172	7,686
Interest Expense, Debt, Excluding Amortization			533	533	1,066	1,065
Amortization of Debt Discount (Premium)			3,332	3,104	6,568	6,120
Amortization of Debt Issuance Costs			$ 273	$ 255	$ 538	$ 501
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	Jun. 30, 2018	Dec. 31, 2017
Obligations under capital lease	$ 483	$ 539
Intangible asset liability	20,827	16,892
Settlement claim liability	8,114
Others	2,483	3,956
Other current liabilities	$ 31,907	$ 21,387

Note 10 - Other Liabilities -52

Note 10 - Other Liabilities - Other Long-term Liabilities (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Deferred rent	$ 1,394	$ 1,487
Income tax payable	736	830
Obligations under capital lease	617	857
Intangible asset liability	17,719	14,445
Deferred tax liabilities		6,146
Others	1,187	862
Total other long-term liabilities	$ 21,653	$ 24,627

Note 11 - Income Taxes (Details

Note 11 - Income Taxes (Details Textual) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Income Tax Expense (Benefit), Total	$ 58	$ 371	$ (8,203)	$ 823
Effective Income Tax Rate Reconciliation, Percent, Total	(0.20%)	3.00%	13.70%	3.00%
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	$ 2,949		$ 4,209
Decrease in Unrecognized Tax Benefits is Reasonably Possible	$ 61		$ 61

Note 12 - Earnings Per Share -

Note 12 - Earnings Per Share - Securities Not Included in Computation of Earnings Per Share (Details) - shares	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Anti-dilutive securities (in shares)	15,021,579	14,858,429	14,924,644	15,699,599
Employee Stock Option [Member]
Anti-dilutive securities (in shares)	1,197,891	1,436,718	1,237,305	1,504,466
Restricted Stock [Member]
Anti-dilutive securities (in shares)	2,993,650	2,591,673	2,857,301	3,365,095
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 Compens55

Note 13 - Stock-based Compensation (Details Textual) - USD ($) $ in Thousands	1 Months Ended		3 Months Ended		6 Months Ended
	Jan. 31, 2018	Dec. 31, 2011	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017	Dec. 31, 2017
Common Stock, Capital Shares Reserved for Future Issuance			4,342,913		4,342,913
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					$ 3,711	$ 8,635
Proceeds from Stock Options Exercised					$ 489	$ 1,485
Stock Issued During Period, Shares, Employee Stock Purchase Plans					177,771	78,348
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Total			$ 152,507		$ 152,507
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition					2 years 281 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					1,750,000
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					1,092,258
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number, Ending Balance			4,550,571		4,550,571		3,987,552
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period					2,043,687
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					87,830
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number, Ending Balance			128,359		128,359
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 Compens56

Note 13 - Stock-based Compensation - Options Outstanding (Details) - USD ($) $ / shares in Units, $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 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)	3 years 40 days	3 years 94 days
Number of shares outstanding, aggregate intrinsic value	$ 23,531	$ 33,578
Number of shares exercised (in shares)	(158,304)
Number of shares exercised, weighted-average exercise price (in dollars per share)	$ 3.09
Number of shares outstanding (in shares)	1,188,559	1,346,863
Number of shares outstanding, weighted-average exercise price (in dollars per share)	$ 12.81	$ 11.67
Vested and expected to vest in the future (in shares)	1,188,559
Number of shares vested and expected to vest in the future, weighted-average exercise price (in dollars per share)	$ 12.81
Number of shares vested and expected to vest in the future, weighted-average remaining contractual life (Year)	3 years 40 days
Number of shares vested and expected to vest in the future, aggregate intrinsic value	$ 23,531

Note 13 - Stock-based Compens57

Note 13 - Stock-based Compensation - Outstanding Restricted Stock Units (Details) - Restricted Stock Units (RSUs) [Member]	6 Months Ended
	Jun. 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)	2,043,687
Granted, weighted-average grant date fair value (in dollars per share) | $ / shares	$ 31.56
Vested (in shares)	(1,092,258)
Vested, weighted-average grant date fair value (in dollars per share) | $ / shares	$ 28.72
Canceled (in shares)	(388,410)
Canceled, weighted-average grant date fair value (in dollars per share) | $ / shares	$ 37.65
Outstanding (in shares)	4,550,571
Outstanding, weighted-average grant date fair value (in dollars per share) | $ / shares	$ 34.28
Expected to vest (in shares)	4,416,021

Note 13 - Stock-based Compens58

Note 13 - Stock-based Compensation - Assumptions Valuation for Market Value Stock Units (Details) - Market Value Stock Units [Member] $ / shares in Units, $ in Thousands	6 Months Ended
	Jun. 30, 2018USD ($)$ / sharesshares
Total target shares (in shares) | shares	356,000
Fair value per share (in dollars per share) | $ / shares	$ 55.81
Total amount to be recognized over the performance period | $	$ 19,868
Risk free interest rate	2.29%
Expected volatility	47.52%
Dividend yield

Note 13 - Stock-based Compens59

Note 13 - Stock-based Compensation - Fair Value of Employee Stock Purchase Plan (Details) - Employee Stock Purchase Plan [Member] - $ / shares	6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
Risk-free interest rate	1.79%	0.65%
Expected life (Year)	178 days	182 days
Dividend yield
Expected volatility	48.00%	38.00%
Estimated fair value (in dollars per share)	$ 7.42	$ 12.58

Note 13 - Stock-based Compens60

Note 13 - Stock-based Compensation - Stock-based Compensation Expense (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Stock-based compensation expense	$ 16,216	$ 11,245	$ 30,769	$ 20,475
Cost of Sales [Member]
Stock-based compensation expense	605	537	1,174	1,098
Research and Development Expense [Member]
Stock-based compensation expense	9,741	7,274	18,239	13,189
Selling and Marketing Expense [Member]
Stock-based compensation expense	3,241	2,119	6,483	3,801
General and Administrative Expense [Member]
Stock-based compensation expense	$ 2,629	$ 1,315	$ 4,873	$ 2,387

Note 14 - Fair Value Measurem61

Note 14 - Fair Value Measurements - Assets and Liabilities Carried at Fair Value on Recurring Basis (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Total fair value of assets	$ 328,160	$ 325,132
Convertible Notes	519,327	555,200
Fair Value, Inputs, Level 1 [Member]
Total fair value of assets	61	31
Convertible Notes
Fair Value, Inputs, Level 2 [Member]
Total fair value of assets	328,099	325,101
Convertible Notes	519,327	555,200
Money Market Funds [Member]
Cash equivalents	5,465	3,332
Money Market Funds [Member] | Fair Value, Inputs, Level 1 [Member]
Cash equivalents	61	31
Money Market Funds [Member] | Fair Value, Inputs, Level 2 [Member]
Cash equivalents	5,404	3,301
Commercial Paper [Member]
Cash equivalents	94,056	76,456
Investment in marketable securities	42,627	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	94,056	76,456
Investment in marketable securities	42,627	56,994
Municipal Bonds [Member]
Cash equivalents		999
Investment in marketable securities	19,562	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	19,562	27,657
Corporate Debt Securities [Member]
Cash equivalents		2,608
Corporate Debt Securities [Member] | Fair Value, Inputs, Level 1 [Member]
Cash equivalents
Corporate Debt Securities [Member] | Fair Value, Inputs, Level 2 [Member]
Cash equivalents		2,608
Debt Security, Corporate, US [Member]
Investment in marketable securities	138,066	146,401
Debt Security, Corporate, US [Member] | Fair Value, Inputs, Level 1 [Member]
Investment in marketable securities
Debt Security, Corporate, US [Member] | Fair Value, Inputs, Level 2 [Member]
Investment in marketable securities	138,066	146,401
Variable Rate Demand Note [Member]
Investment in marketable securities	3,500	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	3,500	3,500
Asset-backed Securities [Member]
Investment in marketable securities	24,884	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	$ 24,884	$ 7,185

Note 15 - Segment and Geograp62

Note 15 - Segment and Geographic Information (Details Textual) $ in Thousands	6 Months Ended
	Jun. 30, 2018USD ($)	Dec. 31, 2017USD ($)
Number of Reportable Segments	1
Non-US [Member]
Long-Lived Assets	$ 31,764	$ 8,695
TAIWAN, PROVINCE OF CHINA
Long-Lived Assets	$ 28,073	$ 4,647

Note 15 - Segment and Geograp63

Note 15 - Segment and Geographic Information - Revenue by Geographic Region (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Revenue	$ 69,814	$ 84,423	$ 129,950	$ 178,007
CHINA
Revenue	25,304	22,835	38,987	60,555
UNITED STATES
Revenue	18,561	18,834	46,963	31,043
SINGAPORE
Revenue	225	10,221	1,156	14,522
THAILAND
Revenue	12,895	9,885	16,120	23,738
JAPAN
Revenue	2,418	9,960	4,141	20,654
Other Country [Member]
Revenue	$ 10,411	$ 12,688	$ 22,583	$ 27,495

Note 16 - Commitments and Con64

Note 16 - Commitments and Contingencies (Details Textual) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017	Dec. 31, 2017
Operating Leases, Rent Expense, Net, Total	$ 1,708	$ 1,744	$ 3,448	$ 3,366
Value of Open Purchase Orders	6,617		6,617
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 to Be Refunded from Escrow	4,875		4,875
Customers vs ClariPhy Communications Inc. [Member] | General and Administrative Expense [Member]
Gain (Loss) Related to Litigation Settlement, Total	(2,125)		(2,125)
Equipment and Software Licenses [Member]
Purchase Obligation, Total	1,339		1,339
Mask [Member]
Purchase Obligation, Total	$ 560		$ 560

Note 16 - Commitments and Con65

Note 16 - Commitments and Contingencies - Future Minimum Lease Payments Under Noncancelable Operating Leases (Details) $ in Thousands	Jun. 30, 2018USD ($)
2018 (remaining)	$ 3,223
2,019	5,623
2,020	2,838
2,021	1,981
2,022	1,723
Thereafter	3,319
Total	$ 18,707