INPHI 10-Q 10 Aug 20 2020 Q2 Quarterly report Financial data

Document And Entity Information

Document And Entity Information - shares	6 Months Ended
	Jun. 30, 2020	Aug. 04, 2020
Document Information [Line Items]
Entity Central Index Key	0001160958
Entity Registrant Name	INPHI CORP
Amendment Flag	false
Current Fiscal Year End Date	--12-31
Document Fiscal Period Focus	Q2
Document Fiscal Year Focus	2020
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Jun. 30, 2020
Document Transition Report	false
Entity File Number	001-34942
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	77-0557980
Entity Address, Address Line One	2953 Bunker Hill Lane, Suite 300
Entity Address, City or Town	Santa Clara
Entity Address, State or Province	CA
Entity Address, Postal Zip Code	95054
City Area Code	408
Local Phone Number	217-7300
Title of 12(b) Security	Common Stock, $0.001 par value per share
Trading Symbol	IPHI
Security Exchange Name	NYSE
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		51,930,086

Unaudited Condensed Consolidate

Unaudited Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Current assets:
Cash and cash equivalents	$ 133,885	$ 282,723
Restricted cash	100	0
Investments in marketable securities (amortized cost of $87,084 and $139,448 as of June 30, 2020 and December 31, 2019, respectively)	88,040	140,131
Accounts receivable, net	85,413	60,295
Inventories	90,419	55,013
Prepaid expenses and other current assets	18,175	17,463
Total current assets	416,032	555,625
Property and equipment, net	109,334	79,563
Goodwill	181,689	104,502
Intangible assets, net	277,649	168,290
Right of use assets, net	33,974	33,576
Other assets, net	32,221	34,450
Total assets	1,050,899	976,006
Current liabilities:
Accounts payable	45,159	18,771
Deferred revenue	5,271	3,719
Accrued employee expenses	22,023	13,164
Other accrued expenses	13,768	5,125
Convertible debt	48,277	217,467
Other current liabilities	42,843	33,531
Total current liabilities	177,341	291,777
Convertible debt	455,246	258,711
Other long-term liabilities	68,901	78,917
Total liabilities	701,488	629,405
Commitments and contingencies (Note 17)
Stockholders’ equity:
Preferred stock, $0.001 par value; 10,000,000 shares authorized; no shares issued	0	0
Common stock, $0.001 par value; 500,000,000 shares authorized; 51,870,076 and 45,909,466 issued and outstanding at June 30, 2020 and December 31, 2019, respectively	52	46
Additional paid-in capital	634,729	587,862
Accumulated deficit	(287,144)	(242,807)
Accumulated other comprehensive income	1,774	1,500
Total stockholders’ equity	349,411	346,601
Total liabilities and stockholders’ equity	$ 1,050,899	$ 976,006

Unaudited Condensed Consolida_2

Unaudited Condensed Consolidated Balance Sheets (Parentheticals) - $ / shares	Jun. 30, 2020	Dec. 31, 2019
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)	51,870,076	45,909,466
Common stock, outstanding (in shares)	51,870,076	45,909,466

Unaudited Condensed Consolida_3

Unaudited Condensed Consolidated Statements of Income (Loss) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Revenue	$ 175,292	$ 86,285	$ 314,722	$ 168,508
Cost of revenue	82,360	37,176	148,093	71,768
Gross profit	92,932	49,109	166,629	96,740
Operating expenses:
Research and development	69,176	44,705	131,869	89,104
Sales and marketing	15,024	11,154	29,933	23,033
General and administrative	12,991	7,480	25,383	14,313
Total operating expenses	97,191	63,339	187,185	126,450
Loss from operations	(4,259)	(14,230)	(20,556)	(29,710)
Interest expense	(10,159)	(8,552)	(19,059)	(16,975)
Loss on early extinguishment of debt	(13,297)	0	(13,297)	0
Other income, net	3,913	1,617	8,869	3,995
Loss before income taxes	(23,802)	(21,165)	(44,043)	(42,690)
Provision (benefit) for income taxes	249	(587)	294	633
Net loss	$ (24,051)	$ (20,578)	$ (44,337)	$ (43,323)
Earnings per share:
Basic (in dollars per share)	$ (0.49)	$ (0.46)	$ (0.93)	$ (0.97)
Diluted (in dollars per share)	$ (0.49)	$ (0.46)	$ (0.93)	$ (0.97)
Weighted-average shares used in computing earnings per share:
Basic (in shares)	48,928,224	45,191,674	47,477,159	44,823,562
Diluted (in shares)	48,928,224	45,191,674	47,477,159	44,823,562

Unaudited Condensed Consolida_4

Unaudited Condensed Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Net loss	$ (24,051)	$ (20,578)	$ (44,337)	$ (43,323)
Other comprehensive income (loss):
Realized gain reclassified into earnings, net of tax	(296)	0	(296)	0
Change in unrealized gain or loss	1,465	566	570	1,106
Comprehensive loss	$ (22,882)	$ (20,012)	$ (44,063)	$ (42,217)

Unaudited Condensed Consolida_5

Unaudited Condensed Consolidated Statements of Stockholders' Equity - USD ($) $ in Thousands	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	AOCI Attributable to Parent [Member]	Total
Balance (in shares) at Dec. 31, 2018	44,292,722
Balance at Dec. 31, 2018	$ 44	$ 536,157	$ (169,896)	$ 389	$ 366,694
Issuance of common stock from exercise of stock options (in shares)	78,205
Issuance of common stock from exercise of stock options	$ 0	646	0	0	646
Issuance of common stock from restricted stock unit grant, net of shares withheld for tax (in shares)	168,227
Issuance of common stock from restricted stock unit grant, net of shares withheld for tax	$ 1		0	0
Issuance of common stock from restricted stock unit grant, net of shares withheld for tax		(4,017)			(4,016)
Issuance of common stock from employee stock purchase plan purchases (in shares)	121,549
Issuance of common stock from employee stock purchase plan purchases	$ 0	3,477	0	0	3,477
Stock-based compensation expense	0	18,758	0	0	18,758
Net loss	0	0	(22,745)	0	(22,745)
Other comprehensive income (loss), net	$ 0	0	0	540	540
Balance (in shares) at Mar. 31, 2019	44,660,703
Balance at Mar. 31, 2019	$ 45	555,021	(192,641)	929	363,354
Balance (in shares) at Dec. 31, 2018	44,292,722
Balance at Dec. 31, 2018	$ 44	536,157	(169,896)	389	$ 366,694
Issuance of common stock from employee stock purchase plan purchases (in shares)					121,549
Net loss					$ (43,323)
Balance (in shares) at Jun. 30, 2019	45,401,399
Balance at Jun. 30, 2019	$ 46	555,082	(213,219)	1,495	343,404
Balance (in shares) at Mar. 31, 2019	44,660,703
Balance at Mar. 31, 2019	$ 45	555,021	(192,641)	929	363,354
Issuance of common stock from exercise of stock options (in shares)	45,317
Issuance of common stock from exercise of stock options	$ 0	486	0	0	486
Issuance of common stock from restricted stock unit grant, net of shares withheld for tax (in shares)	695,379
Issuance of common stock from restricted stock unit grant, net of shares withheld for tax	$ 1		0	0
Issuance of common stock from restricted stock unit grant, net of shares withheld for tax		(18,386)			(18,385)
Stock-based compensation expense	0	17,961	0	0	17,961
Net loss	0	0	(20,578)	0	(20,578)
Other comprehensive income (loss), net	$ 0	0	0	566	566
Balance (in shares) at Jun. 30, 2019	45,401,399
Balance at Jun. 30, 2019	$ 46	555,082	(213,219)	1,495	343,404
Balance (in shares) at Dec. 31, 2019	45,909,466
Balance at Dec. 31, 2019	$ 46	587,862	(242,807)	1,500	346,601
Issuance of common stock from exercise of stock options (in shares)	103,318
Issuance of common stock from exercise of stock options	$ 0	995	0	0	995
Issuance of common stock from restricted stock unit grant, net of shares withheld for tax (in shares)	60,651
Issuance of common stock from restricted stock unit grant, net of shares withheld for tax	$ 0		0	0
Issuance of common stock from restricted stock unit grant, net of shares withheld for tax		(2,490)			(2,490)
Issuance of common stock from employee stock purchase plan purchases (in shares)	74,896
Issuance of common stock from employee stock purchase plan purchases	$ 0	4,112	0	0	4,112
Stock-based compensation expense	0	24,029	0	0	24,029
Net loss	0	0	(20,286)	0	(20,286)
Other comprehensive income (loss), net	$ 0	0	0	(895)	(895)
Balance (in shares) at Mar. 31, 2020	46,148,331
Balance at Mar. 31, 2020	$ 46	614,508	(263,093)	605	352,066
Balance (in shares) at Dec. 31, 2019	45,909,466
Balance at Dec. 31, 2019	$ 46	587,862	(242,807)	1,500	$ 346,601
Issuance of common stock from exercise of stock options (in shares)					180,369
Issuance of common stock from employee stock purchase plan purchases (in shares)					74,896
Net loss					$ (44,337)
Balance (in shares) at Jun. 30, 2020	51,870,076
Balance at Jun. 30, 2020	$ 52	634,729	(287,144)	1,774	349,411
Balance (in shares) at Mar. 31, 2020	46,148,331
Balance at Mar. 31, 2020	$ 46	614,508	(263,093)	605	352,066
Issuance of common stock from exercise of stock options (in shares)	77,051
Issuance of common stock from exercise of stock options	$ 0	904	0	0	904
Issuance of common stock from restricted stock unit grant, net of shares withheld for tax (in shares)	702,180
Issuance of common stock from restricted stock unit grant, net of shares withheld for tax	$ 1		0	0
Issuance of common stock from restricted stock unit grant, net of shares withheld for tax		(39,840)			(39,839)
Stock-based compensation expense	0	28,226	0	0	28,226
Net loss	0	0	(24,051)	0	(24,051)
Other comprehensive income (loss), net	0	0	0	1,169	1,169
Conversion feature of convertible debt, net of issuance costs	0	100,616	0	0	100,616
Purchase of capped calls	$ 0	(55,660)	0	0	(55,660)
Impact of convertible debt repurchases (in shares)	4,942,490
Impact of convertible debt repurchases	$ 5	(14,025)	0	0	(14,020)
Conversion of convertible debt to common stock (in shares)	24
Conversion of convertible debt to common stock	$ 0	0	0	0	0
Balance (in shares) at Jun. 30, 2020	51,870,076
Balance at Jun. 30, 2020	$ 52	$ 634,729	$ (287,144)	$ 1,774	$ 349,411

Unaudited Condensed Consolida_6

Unaudited Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019
Cash flows from operating activities
Net loss	$ (44,337)	$ (43,323)
Adjustments to reconcile net loss to net cash provided by operating activities:
Depreciation and amortization	62,410	48,518
Stock-based compensation	52,255	36,719
Deferred income taxes	244	446
Accretion of convertible debt and amortization of debt issuance costs	15,931	13,805
Net unrealized loss (gain) on equity investments	(1,744)	75
Realized gain on an equity investment	(4,999)	0
Amortization of discount on marketable securities	(42)	(516)
Loss on termination of software lease contracts	3,370	0
Loss on early extinguishment of debt	13,297	0
Other noncash items	(328)	302
Changes in assets and liabilities, net of acquisition:
Accounts receivable	(24,818)	(5,737)
Inventories	(14,194)	(11,043)
Prepaid expenses and other assets	19,591	(469)
Income tax payable/receivable	10	126
Accounts payable	10,434	7,130
Accrued expenses	(7,130)	194
Deferred revenue	(5,949)	813
Other liabilities	(1,076)	2,362
Net cash provided by operating activities	72,925	49,402
Cash flows from investing activities
Purchases of property and equipment	(27,849)	(12,610)
Purchases of marketable securities	(39,511)	(141,764)
Sales of marketable securities	65,509	15,029
Maturities of marketable securities	26,736	109,352
Purchases of intangible assets	(277)	(450)
Purchase of equity investments	(5,999)	0
Proceeds from eSilicon investment	14,999	0
Acquisitions of business, net of cash	(223,731)	0
Net cash used in investing activities	(190,123)	(30,443)
Cash flows from financing activities
Proceeds from exercise of stock options	1,899	1,132
Proceeds from employee stock purchase plan purchases	4,112	3,477
Proceeds from issuance of convertible debt, net of cost	492,743	0
Payment for convertible debt repurchases	(407,782)	0
Payment of obligations related to equipment financing	(198)	(238)
Payment of obligations related to purchase of intangible assets	(23,595)	(13,158)
Purchase of capped call options	(55,660)	0
Minimum tax withholding paid on behalf of employees for net share settlement	(43,059)	(22,566)
Net cash used in financing activities	(31,540)	(31,353)
Net decrease in cash and cash equivalents	(148,738)	(12,394)
Cash, cash equivalents and restricted cash at beginning of period	282,723	172,018
Cash, cash equivalents and restricted cash at end of period	133,985	159,624
Supplemental cash flow information:
Interest paid	3,097	3,196
Income taxes paid	629	126
Supplemental disclosure of non-cash investing and financing activities:
Software license intangible assets	1,000	2,433
eSilicon [Member]
Supplemental disclosure of non-cash investing and financing activities:
Settlement of net receivable from eSilicon as part of purchase consideration	$ 5,250	$ 0

Note 1 - Organization and Basis

Note 1 - Organization and Basis of Presentation	6 Months Ended
	Jun. 30, 2020
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. On January 10, 2020, January 10, 2020 On May 18, 2020, May 18, 2020 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, 2019 10 March 2, 2020. 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 as of June 30, 2020 three six June 30, 2020 2019 six June 30, 2020 2019 three six June 30, 2020 not Use of Estimates and Judgments The preparation of financial statements in conformity with GAAP requires management to make estimates and judgments that affect the amounts reported and disclosed in the condensed consolidated financial statements and accompanying notes. Actual results could differ materially from those estimates. On an ongoing basis, the Company evaluates its estimates and judgments compared to historical experience and expected trends. In March 2020, 19 may Revisions As previously disclosed in the Company's Annual Report on Form 10 December 31, 2019, 2019 not no not 2018 2017 2019 10 10 2020. 10 2019 six June 30, 2019 Summary of Significant Accounting Policies Refer to the Company’s Annual Report on Form 10 January 1, 2020, 326, Measurement of Credit Losses on Financial Instruments 326” 326 not There have been no three six June 30, 2020. Accounts Receivable The Company performs ongoing credit evaluations of its customers and assesses each customer’s credit worthiness. The Company monitors collections and payments from its customers and maintains an allowance for doubtful accounts based upon applying an expected credit loss rate to receivables based on the historical loss rate from similar high risk customers adjusted for current conditions, including any specific customer collection issues identified, and forecasts of economic conditions. Delinquent account balances are written off after management has determined that the likelihood of collection is remote. The allowance for credit losses as of June 30, 2020 December 31, 2019 three six June 30, 2020, not Debt Securities The Company performs an evaluation of its available-for-sale debt securities in unrealized loss position. The Company first not not no June 30, 2020. June 30, 2020 90

Note 2 - Recent Accounting Pron

Note 2 - Recent Accounting Pronouncements	6 Months Ended
	Jun. 30, 2020
Notes to Financial Statements
Accounting Standards Update and Change in Accounting Principle [Text Block]	2. In June 2016, 326, April 2019, No. 2019 04, Codification Improvements to Topic 326, 815, 825, 2020, not In August 2018, no 1 2 3 December 15, 2019. January 1, 2020. not In August 2018, 350 40 December 15, 2019. January 1, 2020. not In November 2018, not December 15, 2019, January 1, 2020. not In December 2019, 740, Income Taxe December 15, 2020, In August 2020, no December 15, 2021,

Note 3 - Acquisitions

Note 3 - Acquisitions	6 Months Ended
	Jun. 30, 2020
Notes to Financial Statements
Business Combination Disclosure [Text Block]	3. eSilicon On January 10, 2020, 12 36 The acquisition has been accounted for using the purchase method of accounting, which requires, among other things, that assets acquired and liabilities assumed be recognized at their fair values as of the acquisition date. The Company allocated the purchase price to tangible and intangible assets acquired and liabilities assumed based on their estimated fair values. The fair value of identifiable intangible assets acquired was based on estimates and assumptions made by management at the time of acquisition. As additional information becomes available, such as finalization of the estimated fair value of tax related items, the Company may not 12 may The following table summarizes the preliminary purchase price allocation as of the acquisition date: Cash $ 704 Restricted cash 2,100 Accounts receivable 5,750 Inventories 21,086 Prepaid expenses and other current assets 21,012 Property and equipment 7,106 Intangible assets 148,720 Right of use asset 1,022 Other noncurrent assets 252 Accounts payable (9,105 ) Accrued expenses (25,060 ) Deferred revenue (7,501 ) Other current liabilities (13,886 ) Other liabilities (3,567 ) Total identifiable net assets $ 148,633 Goodwill 66,011 Net assets acquired $ 214,644 As of the acquisition date, the fair value of receivables, other assets, accounts payable, accrued expenses and other liabilities approximated the book value acquired. The following table summarizes the estimated fair value of intangible assets and their estimated useful lives as of the date of acquisition: Estimated Fair Value Estimated Useful Life (Years) Contract manufacturing rights $ 105,160 5.0 Developed technology 33,630 8.0 Software 9,930 0.5 to 2.0 $ 148,720 Developed technology was valued using the multi-period excess earnings method under the income approach. This method involves discounting the direct cash flows expected to be generated by the technologies over their remaining lives, net of returns on contributory assets. The estimated useful life was determined based on the technology cycle related to product family and its expected contribution to forecasted revenue. Contract manufacturing rights were valued using a multi-period excess earnings method, which involved discounting the direct cash flow expected to be generated by these rights over their remaining economic lives, net of returns on contributory assets. The estimated useful life was determined to be five two Goodwill is calculated as the excess of the consideration transferred over the net assets recognized and is attributable to the workforce of eSilicon, the Company’s going concern value with the opportunity to leverage its workforce to develop new technologies and the ability of the Company to grow the business faster and more profitable than was possible by eSilicon as a stand-alone company. Goodwill is not not The Company incurred acquisition costs of $1,550, of which $1,015 was incurred in the year ended December 31, 2019 six June 30, 2020. eSilicon contributed revenue of $41,178 and pre-tax loss of $996 to the Company for the three June 30, 2020. January 10, 2020 June 30, 2020. Prior to the acquisition, the Company owned a minority equity interest in eSilicon. The fair value of the equity interest immediately before the acquisition date was $14,999, which resulted in a gain of $4,999 and was included in Other income, net in the condensed consolidated statement of income (loss) for the six June 30, 2020. Arrive On May 18, 2020, 12 The acquisition has been accounted for using the purchase method of accounting, which requires, among other things, that assets acquired and liabilities assumed be recognized at their fair values as of the acquisition date. The Company allocated the purchase price to tangible and intangible assets acquired based on their estimated fair values. The fair value of the identifiable intangible asset acquired was based on estimates and assumptions made by management at the time of acquisition. As additional information becomes available, such as finalization of the estimated fair value of tax related items, the Company may not 12 may The following table summarizes the preliminary purchase price allocation as of the acquisition date: Inventories $ 126 Intangible asset 8,840 Total identifiable net assets 8,966 Goodwill 11,175 Net assets acquired $ 20,141 The estimated fair value of developed technology was $8,840 with an estimated useful life of five five Goodwill is calculated as the excess of the consideration transferred over the net assets recognized and is attributable to the workforce of Arrive, the Company’s going concern value with the opportunity to leverage its workforce to develop new technologies and the ability of the Company to grow the business faster and more profitable than was possible by Arrive as a stand-alone company. Since this is an asset purchase agreement, the goodwill is amortized and is deductible for tax purposes. The Company incurred acquisition costs of $180 included in general and administrative expense in the condensed consolidated statement of income (loss) for the three six June 30, 2020. Arrive contributed revenue of $571 and pre-tax loss of $121 to the Company for the period from May 18, 2020 June 30, 2020. Pro Forma Information The following unaudited pro forma financial information presents a summary of the Company’s condensed consolidated results of operations for the three six June 30, 2020 2019, January 1, 2019. Pro Forma Three Months Ended Pro Forma Six Months Ended June 30, 2020 June 30, 2019 June 30, 2020 June 30, 2019 (unaudited) (unaudited) Revenue $ 177,537 $ 97,443 $ 322,201 $ 223,228 Net loss $ (21,683 ) $ (47,229 ) $ (47,881 ) $ (84,902 ) The unaudited pro forma financial information was prepared using the acquisition method of accounting and are based on the historical financial information of the Company, eSilicon and Arrive, reflecting the results of operations for the three six June 30, 2020 2019. not not

Note 4 - Investments

Note 4 - Investments	6 Months Ended
	Jun. 30, 2020
Notes to Financial Statements
Investment [Text Block]	4. The following table summarizes the investments in marketable securities by investment category: June 30, 2020 December 31, 2019 Cost Fair Value Cost Fair Value Available-for-sale securities: U.S. Treasury securities $ — $ — $ 3,752 $ 3,759 Municipal bonds 19,083 19,220 6,062 6,119 Corporate notes/bonds 60,307 61,090 118,859 119,449 Asset backed securities 2,579 2,612 4,239 4,268 Commercial paper 5,115 5,118 6,464 6,464 Certificate of deposit — — 72 72 Total investments $ 87,084 $ 88,040 $ 139,448 $ 140,131 As of June 30, 2020 no The contractual maturities of available-for-sale securities at June 30, 2020 Cost Fair Value Due in one year or less $ 53,653 $ 53,963 Due between one and five years 33,431 34,077 $ 87,084 $ 88,040 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, 2020 December 31, 2019 The Company has non-marketable equity investments in privately held companies without readily determinable market values. The Company adjusts the carrying value of non-marketable equity investments to fair value upon observable transactions for identical or similar investments of the same issuer or impairment (referred to as the measurement alternative). All gains and losses on non-marketable equity investments, realized and unrealized, are recognized in Other income, net in the condensed consolidated statement of income (loss). As of June 30, 2020 three June 30, 2020. three six June 30, 2020.

Note 5 - Inventories

Note 5 - Inventories	6 Months Ended
	Jun. 30, 2020
Notes to Financial Statements
Inventory Disclosure [Text Block]	5. Inventories consist of the following: June 30, 2020 December 31, 2019 Raw materials $ 38,416 $ 18,593 Work in process 31,336 19,081 Finished goods 20,667 17,339 $ 90,419 $ 55,013

Note 6 - Property and Equipment

Note 6 - Property and Equipment, Net	6 Months Ended
	Jun. 30, 2020
Notes to Financial Statements
Property, Plant and Equipment Disclosure [Text Block]	6. Property and equipment consist of the following: June 30, 2020 December 31, 2019 Laboratory and production equipment $ 173,919 $ 144,866 Office, software and computer equipment 41,941 37,241 Furniture and fixtures 1,952 1,617 Leasehold improvements 17,646 8,282 235,458 192,006 Less accumulated depreciation and amortization (126,124 ) (112,443 ) $ 109,334 $ 79,563 Depreciation and amortization expense of property and equipment for the three six June 30, 2020 three six June 30, 2019 As of June 30, 2020 December 31, 2019 three six June 30, 2020 three six June 30, 2019, Property and equipment not June 30, 2020 December 31, 2019

Note 7 - Intangible Assets

Note 7 - Intangible Assets	6 Months Ended
	Jun. 30, 2020
Notes to Financial Statements
Goodwill and Intangible Assets Disclosure [Text Block]	7. The following table presents details of intangible assets: June 30, 2020 December 31, 2019 Gross Accumulated Amortization Net Gross Accumulated Amortization Net Developed technology $ 229,270 $ 137,108 $ 92,162 $ 186,800 $ 123,365 $ 63,435 Customer relationships 70,540 36,273 34,267 70,540 31,409 39,131 Contract manufacturing rights 102,388 9,675 92,713 — — — Trade name 2,310 1,905 405 2,310 1,766 544 Patents 1,579 1,063 516 1,579 1,010 569 Software 78,646 21,060 57,586 74,022 9,411 64,611 $ 484,733 $ 207,084 $ 277,649 $ 335,251 $ 166,961 $ 168,290 The following table presents amortization of intangible assets for the three six June 30, 2020 2019 Three Months Ended June 30, Six Months Ended June 30, 2020 2019 2020 2019 Cost of goods sold $ 12,175 $ 9,724 $ 23,558 $ 19,448 Research and development 6,959 5,514 13,584 10,916 Sales and marketing 2,432 2,432 4,864 4,864 General and administrative 95 148 192 298 $ 21,661 $ 17,818 $ 42,198 $ 35,526 Based on the amount of intangible assets subject to amortization at June 30, 2020 five 2020 (remaining) $ 43,885 2021 80,795 2022 69,413 2023 42,315 2024 27,122 Thereafter 14,119 $ 277,649 The weighted-average amortization periods remaining by intangible asset category were as follows (in years): Developed technology 4.5 Customer relationship 3.5 Contract manufacturing rights 4.5 Trade name 1.5 Patents 7.4 Software 2.2

Note 8 - Leases

Note 8 - Leases	6 Months Ended
	Jun. 30, 2020
Notes to Financial Statements
Lessee, Operating Leases [Text Block]	8. The Company has operating leases for office facilities. The leases have remaining lease terms of one ten may five Information related to operating leases are as follows: Three Months Ended June 30, Six Months Ended June 30, 2020 2019 2020 2019 Operating lease cost $ 2,375 $ 1,044 $ 4,526 $ 2,098 Cash paid for leases 1,741 927 3,320 2,191 Right of use assets obtained in exchange for lease obligations 2,001 — 3,743 224 Weighted average remaining lease term and weighted average discount are as follows: June 30, 2020 December 31, 2019 Weighted average remaining lease term (years) 7.88 8.52 Weighted average discount rate 3.7 % 3.9 % Future minimum lease payments under non-cancellable leases as of June 30, 2020 2020 (remaining) $ 3,726 2021 6,694 2022 6,900 2023 6,873 2024 6,621 Thereafter 23,914 Total future minimum lease payments 54,728 Less: Imputed interest 7,966 Lease incentive recognized as offset to lease liability 2,576 Present value of lease obligations $ 44,186 As of June 30, 2020 not third 2020 three five

Note 9 - Product Warranty Oblig

Note 9 - Product Warranty Obligation	6 Months Ended
	Jun. 30, 2020
Notes to Financial Statements
Product Warranty Disclosure [Text Block]	9. As of June 30, 2020 December 31, 2019 no three six June 30, 2020 2019

Note 10 - Convertible Debt

Note 10 - Convertible Debt	6 Months Ended
	Jun. 30, 2020
Convertible Debt [Member]
Notes to Financial Statements
Debt Disclosure [Text Block]	10. The carrying amount of the Company’s long-term debt consists of the following: June 30, 2020 December 31, 2019 Principal $ 619,956 $ 517,500 Less: Unamortized debt discount (105,568 ) (38,105 ) Unamortized debt issuance costs (10,865 ) (3,217 ) Net carrying amount of long-term debt 503,523 476,178 Less current portion of long-term debt 48,277 217,467 Long-term debt, non-current portion $ 455,246 $ 258,711 In December 2015, 2020 2015” 2015 December 1, 2020, 2015 June 1 December 1 June 1, 2016. $1 2015, Interest expense for the Convertible Notes 2015 Three Months Ended June 30, Six Months Ended June 30, 2020 2019 2020 2019 Contractual interest expense $ 370 $ 646 $ 1,013 $ 1,286 Amortization of debt discount 1,704 2,877 4,740 5,667 Amortization of debt issuance costs 153 259 427 510 Total interest expense $ 2,227 $ 3,782 $ 6,180 $ 7,463 In connection with the issuance of the Convertible Notes 2015, 2015” 2015, 2015, 2015 In September 2016, 2021 2016” 2016 September 1, 2021, 2016 March 1 September 1 March 1, 2017. $1 2016, Interest expense for the Convertible Notes 2016 Three Months Ended June 30, Six Months Ended June 30, 2020 2019 2020 2019 Contractual interest expense $ 397 $ 533 $ 934 $ 1,066 Amortization of debt discount 2,877 3,577 6,649 7,050 Amortization of debt issuance costs 236 293 545 578 Total interest expense $ 3,510 $ 4,403 $ 8,128 $ 8,694 In connection with the issuance of the Convertible Notes 2016, 2016” 2016, 2016, 2016 In April 2020, 2025 2020” 2015 2016, 2020 April 15, 2025, 2020 April 15 October 15 October 15, 2020. $1 2020, 2020 100% not Prior to the close of business on the business day immediately preceding October 15, 2024, may 2020 June 30, 2020 ( not 130% 2020 five five 2020 $1 2020 98% 2020 second October 15, 2024 second may 2020 2020, may 2020 The Company may not 2020 April 20, 2023. may 2020, April 20, 2023 not 2020 Upon the occurrence of certain fundamental changes, the holders of the Convertible Notes 2020 may 2020 2020, The Convertible Notes 2020 April 24, 2020 ( 2020” 2020 not 2020 not 2020 may 2020, 2020 2020 2020 2020. June 30, 2020, none 2020 In accounting for the issuance of the Convertible Notes 2020, 2020 not 2020 2020 Interest expense for the Convertible Notes 2020 three six June 30, 2020 Contractual interest expense $ 759 Amortization of debt discount 3,234 Amortization of debt issuance costs 336 Total interest expense $ 4,329 In connection with the issuance of the Convertible Notes 2020, 2020” 2020, 2020, 2020 2020 815 40, The purchased Capped Call 2020 2020 2020 2020 2020 2020 The Capped Call 2020 not 2020 not 2020. During the three June 30, 2020, 2015 2016, The net carrying amount of the liability component of the convertible debt immediately prior to the repurchase was as follows: Convertible Notes 2015 Convertible Notes 2016 Principal $ 180,454 $ 223,090 Unamortized debt discount (5,596 ) (15,694 ) Unamortized debt issuance costs (504 ) (1,287 ) Total $ 174,354 $ 206,109 The loss on early extinguishment of debt is calculated as follows: Convertible Notes 2015 Convertible Notes 2016 Repurchase consideration allocated to the liability component $ 177,622 $ 216,138 Net carrying value of debt (174,354 ) (206,109 ) Loss on early extinguishment $ 3,268 $ 10,029 The repurchase consideration allocated to the equity component of $299,458 and $269,875 for the Convertible Notes 2015 2016, 2015 2016, The conversion condition for the Convertible Notes 2015 2016 three June 30, 2020. three June 30, 2020, 2016 June 30, 2020.

Note 11 - Other Liabilities

Note 11 - Other Liabilities	6 Months Ended
	Jun. 30, 2020
Notes to Financial Statements
Other Liabilities Disclosure [Text Block]	11. Other current liabilities consist of the following: June 30, 2020 December 31, 2019 Software license agreements liability $ 28,500 $ 25,810 Operating lease liability 3,128 2,545 Others 11,215 5,176 $ 42,843 $ 33,531 Other long-term liabilities consist of the following: June 30, 2020 December 31, 2019 Income tax payable $ 1,067 $ 692 Software license agreements liability 24,823 36,144 Operating lease liability 41,058 41,074 Others 1,953 1,007 $ 68,901 $ 78,917

Note 12 - Income Taxes

Note 12 - Income Taxes	6 Months Ended
	Jun. 30, 2020
Notes to Financial Statements
Income Tax Disclosure [Text Block]	12. The Company normally determines its interim income tax provision using an estimated single annual effective tax rate for all tax jurisdictions. ASC 740 no three six June 30, 2020 2019 not June 30, 2020 2019 The Company recorded an income tax provision of $249 and $294 in the three six June 30, 2020 three six June 30, 2020 three six June 30, 2020 no no three six June 30, 2020 The Company recorded an income tax provision (benefit) of ($587) and $633 in the three six June 30, 2019, three six June 30, 2019, During the three six June 30, 2020 June 30, 2020 The Company does not On March 27, 2020, not

Note 13 - Earnings Per Share

Note 13 - Earnings Per Share	6 Months Ended
	Jun. 30, 2020
Notes to Financial Statements
Earnings Per Share [Text Block]	13. The following securities were not Three Months Ended June 30, Six Months Ended June 30, 2020 2019 2020 2019 Common stock options 764,328 1,056,682 810,597 1,092,153 Unvested restricted stock units and market value stock units 2,938,459 2,772,493 2,930,147 2,790,574 Convertible debt 10,041,179 10,830,038 10,435,608 10,830,038 13,743,966 14,659,213 14,176,352 14,712,765

Note 14 - Stock-based Compensat

Note 14 - Stock-based Compensation	6 Months Ended
	Jun. 30, 2020
Notes to Financial Statements
Share-based Payment Arrangement [Text Block]	14. In June 2010, 2010 “2010 November 2010. 2010 2010 2010 June 30, 2020 2010 Stock Option Awards The Company did not three six June 30, 2020 2019 The following table summarizes information regarding options outstanding: Number of Shares Weighted Average Exercise Price Weighted Average Remaining Contractual Life (Years) Aggregate Intrinsic Value Outstanding at December 31, 2019 905,141 $ 13.68 1.81 $ 54,616 Exercised (180,369 ) $ 10.53 Outstanding at June 30, 2020 724,772 $ 14.46 1.52 $ 74,677 Vested and Exercisable at June 30, 2020 724,772 $ 14.46 1.52 $ 74,677 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, 2020 2019 six June 30, 2020 2019 Restricted Stock Units The Company granted restricted stock units (“RSUs”) to members of the Board and its employees. Most of the Company’s outstanding RSUs vest over four first The following table summarizes information regarding outstanding RSUs: Number of Shares Weighted Average Grant Date Fair Value Per Share Outstanding at December 31, 2019 3,822,325 $ 41.38 Granted 1,380,565 $ 86.59 Vested (1,205,934 ) $ 41.96 Canceled (61,070 ) $ 56.19 Outstanding at June 30, 2020 3,935,886 $ 56.82 Expected to vest at June 30, 2020 3,860,310 The RSUs include performance-based stock units subject to achievement of pre-established revenue goal and earnings per share on a non-GAAP basis. Once the goals are met, the performance-based stock units are subject to four June 30, 2020 Market Value Stock Units In February 2020, may 0% 500 two three two three February 9, 2022 2023, may two three two three Two-Year Term Three-Year Term Total target shares 53,448 101,775 Fair value per share $ 119.90 $ 125.30 Total amount to be recognized over the service period $ 6,408 $ 12,752 Risk free interest rate 1.41 % 1.38 % Expected volatility 41.37 % 43.79 % Dividend yield — — Employee Stock Purchase Plan In December 2011, may not six February 10 August 10 six The ESPP imposes certain limitations upon an employee’s right to acquire common stock, including the following: (i) no no may six June 30, 2020 2019 The fair value of the ESPP purchases is estimated at the start of the offering period using the Black-Scholes option pricing model with the following assumptions: Six Months Ended June 30, 2020 2019 Risk-free interest rate 1.51 % 2.50 % Expected life (in years) 0.49 0.49 Dividend yield — — Expected volatility 39 % 45 % Estimated fair value $ 21.71 $ 11.11 Stock-Based Compensation Expense Stock-based compensation expense is included in the Company’s condensed consolidated statements of income (loss) as follows: Three Months Ended June 30, Six Months Ended June 30, 2020 2019 2020 2019 Cost of goods sold $ 1,986 $ 1,674 $ 3,897 $ 2,479 Research and development 16,432 9,925 29,511 20,657 Sales and marketing 5,261 3,269 10,462 7,417 General and administrative 4,547 3,093 8,385 6,166 $ 28,226 $ 17,961 $ 52,255 $ 36,719 Total unrecognized compensation cost related to unvested restricted stock units at June 30, 2020

Note 15 - Fair Value Measuremen

Note 15 - Fair Value Measurements	6 Months Ended
	Jun. 30, 2020
Notes to Financial Statements
Fair Value Disclosures [Text Block]	15. 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 convertible notes are carried on the condensed 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, 2020 December 31, 2019 2 June 30, 2020 December 31, 2019 The following table presents information about assets and liabilities required to be carried at fair value on a recurring basis: June 30, 2020 Total Level 1 Level 2 Assets Cash equivalents: Money market funds $ 6,155 $ 5,519 $ 636 Commercial paper 8,198 — 8,198 Investment in marketable debt securities: Municipal bonds 19,220 — 19,220 Corporate notes/bonds 61,090 — 61,090 Asset backed securities 2,612 — 2,612 Commercial paper 5,118 — 5,118 $ 102,393 $ 5,519 $ 96,874 December 31, 2019 Total Level 1 Level 2 Assets Cash equivalents: Money market funds $ 190,598 $ 67,494 $ 123,104 Commercial paper 9,465 — 9,465 Municipal bonds 1,250 — 1,250 Investments in marketable securities: U.S. Treasury securities 3,759 3,759 — Municipal bonds 6,119 — 6,119 Corporate notes/bonds 119,449 — 119,449 Asset-backed securities 4,268 — 4,268 Commercial paper 6,464 — 6,464 Certificate of deposit 72 72 — $ 341,444 $ 71,325 $ 270,119 As discussed in note 4, 1 4, 3

Note 16 - Segment and Geographi

Note 16 - Segment and Geographic Information	6 Months Ended
	Jun. 30, 2020
Notes to Financial Statements
Segment Reporting Disclosure [Text Block]	16. 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, 2020 2019 2020 2019 China $ 102,019 $ 38,449 $ 169,860 $ 76,266 United States 33,477 20,520 75,081 40,967 Thailand 18,801 14,225 32,731 26,844 Other 20,995 13,091 37,050 24,431 $ 175,292 $ 86,285 $ 314,722 $ 168,508 As of June 30, 2020 December 31, 2019

Note 17 - Commitments and Conti

Note 17 - Commitments and Contingencies	6 Months Ended
	Jun. 30, 2020
Notes to Financial Statements
Commitments and Contingencies Disclosure [Text Block]	17. Noncancelable Purchase Obligations The Company has noncancelable service agreements, including software licenses, colocation and cloud services used in research and development activities expiring in various years through 2025. June 30, 2020 2020 (remaining) $ 187 2021 280 2022 226 2023 130 2024 95 Thereafter 55 Total $ 973 The Company depends upon third June 30, 2020 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, 120 As to the proceeding at the USPTO, reexamination has been ordered for all of the patents that Netlist alleged to infringe. At present, the USPTO has determined that almost all of the originally filed claims are not No. 7,532,537 August 2, 2016 No. 7,636,274 November 5, 2018, 1 97, June 15, 2020 No. 7,619,912. While the Company intends to defend the foregoing USPTO proceedings and lawsuit vigorously, the USPTO proceedings and litigation, whether or not Due to 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. Claims Against eSilicon In connection with the Company's acquisition of eSilicon, eSilicon and the Company have received written communications from certain former stockholders of eSilicon demanding to inspect eSilicon’s books and records and indicating that such stockholders will be seeking appraisal of shares they held in eSilicon. Certain of these former eSilicon stockholders also have stated that they may may Indemnifications In the ordinary course of business, the Company may not third may may not not no June 30, 2020 December 31, 2019

Significant Accounting Policies

Significant Accounting Policies (Policies)	6 Months Ended
	Jun. 30, 2020
Accounting Policies [Abstract]
New Accounting Pronouncements, Policy [Policy Text Block]	In June 2016, 326, April 2019, No. 2019 04, Codification Improvements to Topic 326, 815, 825, 2020, not In August 2018, no 1 2 3 December 15, 2019. January 1, 2020. not In August 2018, 350 40 December 15, 2019. January 1, 2020. not In November 2018, not December 15, 2019, January 1, 2020. not In December 2019, 740, Income Taxe December 15, 2020, In August 2020, no December 15, 2021,

Note 3 - Acquisitions (Tables)

Note 3 - Acquisitions (Tables)	6 Months Ended
	Jun. 30, 2020
Notes Tables
Schedule of Recognized Identified Assets Acquired and Liabilities Assumed [Table Text Block]	Cash $ 704 Restricted cash 2,100 Accounts receivable 5,750 Inventories 21,086 Prepaid expenses and other current assets 21,012 Property and equipment 7,106 Intangible assets 148,720 Right of use asset 1,022 Other noncurrent assets 252 Accounts payable (9,105 ) Accrued expenses (25,060 ) Deferred revenue (7,501 ) Other current liabilities (13,886 ) Other liabilities (3,567 ) Total identifiable net assets $ 148,633 Goodwill 66,011 Net assets acquired $ 214,644 Inventories $ 126 Intangible asset 8,840 Total identifiable net assets 8,966 Goodwill 11,175 Net assets acquired $ 20,141
Schedule of Finite-Lived Intangible Assets Acquired as Part of Business Combination [Table Text Block]	Estimated Fair Value Estimated Useful Life (Years) Contract manufacturing rights $ 105,160 5.0 Developed technology 33,630 8.0 Software 9,930 0.5 to 2.0 $ 148,720
Business Acquisition, Pro Forma Information [Table Text Block]	Pro Forma Three Months Ended Pro Forma Six Months Ended June 30, 2020 June 30, 2019 June 30, 2020 June 30, 2019 (unaudited) (unaudited) Revenue $ 177,537 $ 97,443 $ 322,201 $ 223,228 Net loss $ (21,683 ) $ (47,229 ) $ (47,881 ) $ (84,902 )

Note 4 - Investments (Tables)

Note 4 - Investments (Tables)	6 Months Ended
	Jun. 30, 2020
Notes Tables
Available-for-sale Securities [Table Text Block]	June 30, 2020 December 31, 2019 Cost Fair Value Cost Fair Value Available-for-sale securities: U.S. Treasury securities $ — $ — $ 3,752 $ 3,759 Municipal bonds 19,083 19,220 6,062 6,119 Corporate notes/bonds 60,307 61,090 118,859 119,449 Asset backed securities 2,579 2,612 4,239 4,268 Commercial paper 5,115 5,118 6,464 6,464 Certificate of deposit — — 72 72 Total investments $ 87,084 $ 88,040 $ 139,448 $ 140,131
Investments Classified by Contractual Maturity Date [Table Text Block]	Cost Fair Value Due in one year or less $ 53,653 $ 53,963 Due between one and five years 33,431 34,077 $ 87,084 $ 88,040

Note 5 - Inventories (Tables)

Note 5 - Inventories (Tables)	6 Months Ended
	Jun. 30, 2020
Notes Tables
Schedule of Inventory, Current [Table Text Block]	June 30, 2020 December 31, 2019 Raw materials $ 38,416 $ 18,593 Work in process 31,336 19,081 Finished goods 20,667 17,339 $ 90,419 $ 55,013

Note 6 - Property and Equipme_2

Note 6 - Property and Equipment, Net (Tables)	6 Months Ended
	Jun. 30, 2020
Notes Tables
Property, Plant and Equipment [Table Text Block]	June 30, 2020 December 31, 2019 Laboratory and production equipment $ 173,919 $ 144,866 Office, software and computer equipment 41,941 37,241 Furniture and fixtures 1,952 1,617 Leasehold improvements 17,646 8,282 235,458 192,006 Less accumulated depreciation and amortization (126,124 ) (112,443 ) $ 109,334 $ 79,563

Note 7 - Intangible Assets (Tab

Note 7 - Intangible Assets (Tables)	6 Months Ended
	Jun. 30, 2020
Notes Tables
Schedule of Finite-Lived Intangible Assets [Table Text Block]	June 30, 2020 December 31, 2019 Gross Accumulated Amortization Net Gross Accumulated Amortization Net Developed technology $ 229,270 $ 137,108 $ 92,162 $ 186,800 $ 123,365 $ 63,435 Customer relationships 70,540 36,273 34,267 70,540 31,409 39,131 Contract manufacturing rights 102,388 9,675 92,713 — — — Trade name 2,310 1,905 405 2,310 1,766 544 Patents 1,579 1,063 516 1,579 1,010 569 Software 78,646 21,060 57,586 74,022 9,411 64,611 $ 484,733 $ 207,084 $ 277,649 $ 335,251 $ 166,961 $ 168,290
Finite-lived Intangible Assets Amortization Expense [Table Text Block]	Three Months Ended June 30, Six Months Ended June 30, 2020 2019 2020 2019 Cost of goods sold $ 12,175 $ 9,724 $ 23,558 $ 19,448 Research and development 6,959 5,514 13,584 10,916 Sales and marketing 2,432 2,432 4,864 4,864 General and administrative 95 148 192 298 $ 21,661 $ 17,818 $ 42,198 $ 35,526
Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block]	2020 (remaining) $ 43,885 2021 80,795 2022 69,413 2023 42,315 2024 27,122 Thereafter 14,119 $ 277,649
Finite Lived Intangible Assets Remaining Amortization Period [Table Text Block]	Developed technology 4.5 Customer relationship 3.5 Contract manufacturing rights 4.5 Trade name 1.5 Patents 7.4 Software 2.2

Note 8 - Leases (Tables)

Note 8 - Leases (Tables)	6 Months Ended
	Jun. 30, 2020
Notes Tables
Lease, Cost [Table Text Block]	Three Months Ended June 30, Six Months Ended June 30, 2020 2019 2020 2019 Operating lease cost $ 2,375 $ 1,044 $ 4,526 $ 2,098 Cash paid for leases 1,741 927 3,320 2,191 Right of use assets obtained in exchange for lease obligations 2,001 — 3,743 224 June 30, 2020 December 31, 2019 Weighted average remaining lease term (years) 7.88 8.52 Weighted average discount rate 3.7 % 3.9 %
Lessee, Operating Lease, Liability, Maturity [Table Text Block]	2020 (remaining) $ 3,726 2021 6,694 2022 6,900 2023 6,873 2024 6,621 Thereafter 23,914 Total future minimum lease payments 54,728 Less: Imputed interest 7,966 Lease incentive recognized as offset to lease liability 2,576 Present value of lease obligations $ 44,186

Note 10 - Convertible Debt (Tab

Note 10 - Convertible Debt (Tables)	6 Months Ended
	Jun. 30, 2020
Notes Tables
Schedule of Long-term Debt Instruments [Table Text Block]	June 30, 2020 December 31, 2019 Principal $ 619,956 $ 517,500 Less: Unamortized debt discount (105,568 ) (38,105 ) Unamortized debt issuance costs (10,865 ) (3,217 ) Net carrying amount of long-term debt 503,523 476,178 Less current portion of long-term debt 48,277 217,467 Long-term debt, non-current portion $ 455,246 $ 258,711
Interest Income and Interest Expense Disclosure [Table Text Block]	Three Months Ended June 30, Six Months Ended June 30, 2020 2019 2020 2019 Contractual interest expense $ 370 $ 646 $ 1,013 $ 1,286 Amortization of debt discount 1,704 2,877 4,740 5,667 Amortization of debt issuance costs 153 259 427 510 Total interest expense $ 2,227 $ 3,782 $ 6,180 $ 7,463 Three Months Ended June 30, Six Months Ended June 30, 2020 2019 2020 2019 Contractual interest expense $ 397 $ 533 $ 934 $ 1,066 Amortization of debt discount 2,877 3,577 6,649 7,050 Amortization of debt issuance costs 236 293 545 578 Total interest expense $ 3,510 $ 4,403 $ 8,128 $ 8,694 Contractual interest expense $ 759 Amortization of debt discount 3,234 Amortization of debt issuance costs 336 Total interest expense $ 4,329
Schedule of Extinguishment of Debt [Table Text Block]	Convertible Notes 2015 Convertible Notes 2016 Principal $ 180,454 $ 223,090 Unamortized debt discount (5,596 ) (15,694 ) Unamortized debt issuance costs (504 ) (1,287 ) Total $ 174,354 $ 206,109 Convertible Notes 2015 Convertible Notes 2016 Repurchase consideration allocated to the liability component $ 177,622 $ 216,138 Net carrying value of debt (174,354 ) (206,109 ) Loss on early extinguishment $ 3,268 $ 10,029

Note 11 - Other Liabilities (Ta

Note 11 - Other Liabilities (Tables)	6 Months Ended
	Jun. 30, 2020
Notes Tables
Other Current Liabilities [Table Text Block]	June 30, 2020 December 31, 2019 Software license agreements liability $ 28,500 $ 25,810 Operating lease liability 3,128 2,545 Others 11,215 5,176 $ 42,843 $ 33,531
Other Noncurrent Liabilities [Table Text Block]	June 30, 2020 December 31, 2019 Income tax payable $ 1,067 $ 692 Software license agreements liability 24,823 36,144 Operating lease liability 41,058 41,074 Others 1,953 1,007 $ 68,901 $ 78,917

Note 13 - Earnings Per Share (T

Note 13 - Earnings Per Share (Tables)	6 Months Ended
	Jun. 30, 2020
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, 2020 2019 2020 2019 Common stock options 764,328 1,056,682 810,597 1,092,153 Unvested restricted stock units and market value stock units 2,938,459 2,772,493 2,930,147 2,790,574 Convertible debt 10,041,179 10,830,038 10,435,608 10,830,038 13,743,966 14,659,213 14,176,352 14,712,765

Note 14 - Stock-based Compens_2

Note 14 - Stock-based Compensation (Tables)	6 Months Ended
	Jun. 30, 2020
Notes Tables
Share-based Payment Arrangement, Option, Activity [Table Text Block]	Number of Shares Weighted Average Exercise Price Weighted Average Remaining Contractual Life (Years) Aggregate Intrinsic Value Outstanding at December 31, 2019 905,141 $ 13.68 1.81 $ 54,616 Exercised (180,369 ) $ 10.53 Outstanding at June 30, 2020 724,772 $ 14.46 1.52 $ 74,677 Vested and Exercisable at June 30, 2020 724,772 $ 14.46 1.52 $ 74,677
Share-based Payment Arrangement, Restricted Stock Unit, Activity [Table Text Block]	Number of Shares Weighted Average Grant Date Fair Value Per Share Outstanding at December 31, 2019 3,822,325 $ 41.38 Granted 1,380,565 $ 86.59 Vested (1,205,934 ) $ 41.96 Canceled (61,070 ) $ 56.19 Outstanding at June 30, 2020 3,935,886 $ 56.82 Expected to vest at June 30, 2020 3,860,310
Schedule of Share-based Payment Award, Equity Instruments Other than Option, Valuation Assumptions [Table Text Block]	Two-Year Term Three-Year Term Total target shares 53,448 101,775 Fair value per share $ 119.90 $ 125.30 Total amount to be recognized over the service period $ 6,408 $ 12,752 Risk free interest rate 1.41 % 1.38 % Expected volatility 41.37 % 43.79 % Dividend yield — —
Schedule of Share-based Payment Award, Employee Stock Purchase Plan, Valuation Assumptions [Table Text Block]	Six Months Ended June 30, 2020 2019 Risk-free interest rate 1.51 % 2.50 % Expected life (in years) 0.49 0.49 Dividend yield — — Expected volatility 39 % 45 % Estimated fair value $ 21.71 $ 11.11
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Table Text Block]	Three Months Ended June 30, Six Months Ended June 30, 2020 2019 2020 2019 Cost of goods sold $ 1,986 $ 1,674 $ 3,897 $ 2,479 Research and development 16,432 9,925 29,511 20,657 Sales and marketing 5,261 3,269 10,462 7,417 General and administrative 4,547 3,093 8,385 6,166 $ 28,226 $ 17,961 $ 52,255 $ 36,719

Note 15 - Fair Value Measurem_2

Note 15 - Fair Value Measurements (Tables)	6 Months Ended
	Jun. 30, 2020
Notes Tables
Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block]	June 30, 2020 Total Level 1 Level 2 Assets Cash equivalents: Money market funds $ 6,155 $ 5,519 $ 636 Commercial paper 8,198 — 8,198 Investment in marketable debt securities: Municipal bonds 19,220 — 19,220 Corporate notes/bonds 61,090 — 61,090 Asset backed securities 2,612 — 2,612 Commercial paper 5,118 — 5,118 $ 102,393 $ 5,519 $ 96,874 December 31, 2019 Total Level 1 Level 2 Assets Cash equivalents: Money market funds $ 190,598 $ 67,494 $ 123,104 Commercial paper 9,465 — 9,465 Municipal bonds 1,250 — 1,250 Investments in marketable securities: U.S. Treasury securities 3,759 3,759 — Municipal bonds 6,119 — 6,119 Corporate notes/bonds 119,449 — 119,449 Asset-backed securities 4,268 — 4,268 Commercial paper 6,464 — 6,464 Certificate of deposit 72 72 — $ 341,444 $ 71,325 $ 270,119

Note 16 - Segment and Geograp_2

Note 16 - Segment and Geographic Information (Tables)	6 Months Ended
	Jun. 30, 2020
Notes Tables
Revenue from External Customers by Geographic Areas [Table Text Block]	Three Months Ended June 30, Six Months Ended June 30, 2020 2019 2020 2019 China $ 102,019 $ 38,449 $ 169,860 $ 76,266 United States 33,477 20,520 75,081 40,967 Thailand 18,801 14,225 32,731 26,844 Other 20,995 13,091 37,050 24,431 $ 175,292 $ 86,285 $ 314,722 $ 168,508

Note 17 - Commitments and Con_2

Note 17 - Commitments and Contingencies (Tables)	6 Months Ended
	Jun. 30, 2020
Notes Tables
Unrecorded Unconditional Purchase Obligations Disclosure [Table Text Block]	2020 (remaining) $ 187 2021 280 2022 226 2023 130 2024 95 Thereafter 55 Total $ 973

Note 1 - Organization and Bas_2

Note 1 - Organization and Basis of Presentation (Details Textual) - USD ($) $ in Thousands	May 18, 2020	Jan. 10, 2020	Jun. 30, 2020	Jun. 30, 2019	Dec. 31, 2019
Net Cash Provided by (Used in) Investing Activities, Total			$ (190,123)	$ (30,443)
Net Cash Provided by (Used in) Financing Activities, Total			(31,540)	(31,353)
Accounts Receivable, Allowance for Credit Loss, Ending Balance			1,202		$ 1,152
Debt Securities, Available-for-sale, Allowance for Credit Loss, Ending Balance			0
Debt Securities, Available-for-Sale, Accrued Interest, after Allowance for Credit Loss, Total			$ 629
Revision [Member]
Net Cash Provided by (Used in) Investing Activities, Total				13,158
Net Cash Provided by (Used in) Financing Activities, Total				13,158
Previously Reported [Member]
Net Cash Provided by (Used in) Investing Activities, Total				43,601
Net Cash Provided by (Used in) Financing Activities, Total				$ 18,195
eSilicon [Member]
Payments to Acquire Businesses, Gross		$ 214,644
Arrive [Member]
Payments to Acquire Businesses, Gross	$ 20,141

Note 3 - Acquisitions (Details

Note 3 - Acquisitions (Details Textual) - USD ($) $ in Thousands	May 18, 2020	Jan. 10, 2020	Jun. 30, 2020	Jun. 30, 2020	Jun. 30, 2020	Jun. 30, 2020	Dec. 31, 2019	Jun. 30, 2020
eSilicon [Member]
Payments to Acquire Businesses, Gross		$ 214,644
Purchase Consideration in Escrow		10,000
Business Combination, Acquisition Related Costs							$ 1,015	$ 1,550
Business Combination, Pro Forma Information, Revenue of Acquiree since Acquisition Date, Actual				$ 41,178		$ 59,851
Business Combination, Pro Forma Information, Earnings or Loss of Acquiree since Acquisition Date, Actual				(996)		(14,991)
Business Combination, Step Acquisition, Equity Interest in Acquiree, Fair Value						14,999
Business Combination, Step Acquisition, Equity Interest in Acquiree, Remeasurement Gain (Loss), Net, Total						$ 4,999
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles		148,720
eSilicon [Member] | Developed Technology Rights [Member]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles		$ 33,630
eSilicon [Member] | General and Administrative Expense [Member]
Business Combination, Acquisition Related Costs					$ 535
Arrive [Member]
Payments to Acquire Businesses, Gross	$ 20,141
Business Combination, Pro Forma Information, Revenue of Acquiree since Acquisition Date, Actual			$ 571
Business Combination, Pro Forma Information, Earnings or Loss of Acquiree since Acquisition Date, Actual			$ (121)
Holdback Payments to Acquire Business	3,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles	8,840
Arrive [Member] | Developed Technology Rights [Member]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles	$ 8,840
Finite-Lived Intangible Asset, Useful Life (Year)	5 years
Arrive [Member] | General and Administrative Expense [Member]
Business Combination, Acquisition Related Costs				$ 180	$ 180

Note 3 - Acquisitions - Purchas

Note 3 - Acquisitions - Purchase Price Allocation (Details) - USD ($) $ in Thousands	Jun. 30, 2020	May 18, 2020	Jan. 10, 2020	Dec. 31, 2019
Goodwill	$ 181,689			$ 104,502
eSilicon [Member]
Cash			$ 704
Restricted cash			2,100
Accounts receivable			5,750
Inventories			21,086
Prepaid expenses and other current assets			21,012
Property and equipment			7,106
Intangible assets			148,720
Right of use asset			1,022
Other noncurrent assets			252
Accounts payable			(9,105)
Accrued expenses			(25,060)
Deferred revenue			(7,501)
Other current liabilities			(13,886)
Other liabilities			(3,567)
Total identifiable net assets			148,633
Goodwill			66,011
Net assets acquired			214,644
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles			$ 148,720
Arrive [Member]
Inventories		$ 126
Total identifiable net assets		8,966
Goodwill		11,175
Net assets acquired		20,141
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles		$ 8,840

Note 3 - Acquisitions - Intangi

Note 3 - Acquisitions - Intangible Assets Acquired (Details) - eSilicon [Member] $ in Thousands	Jan. 10, 2020USD ($)
Estimated Fair Value	$ 148,720
Contractual Rights [Member]
Estimated Fair Value	$ 105,160
Estimated Useful Life (Year)	5 years
Developed Technology Rights [Member]
Estimated Fair Value	$ 33,630
Estimated Useful Life (Year)	8 years
Computer Software, Intangible Asset [Member]
Estimated Fair Value	$ 9,930
Computer Software, Intangible Asset [Member] | Minimum [Member]
Estimated Useful Life (Year)	6 months
Computer Software, Intangible Asset [Member] | Maximum [Member]
Estimated Useful Life (Year)	2 years

Note 3 - Acquisitions - Pro For

Note 3 - Acquisitions - Pro Forma Information (Details) - ESilicon and Arrive [Member] - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Revenue	$ 177,537	$ 97,443	$ 322,201	$ 223,228
Net loss	$ (21,683)	$ (47,229)	$ (47,881)	$ (84,902)

Note 4 - Investments (Details T

Note 4 - Investments (Details Textual) Pure in Thousands, $ in Thousands	3 Months Ended	6 Months Ended	12 Months Ended
	Jun. 30, 2020USD ($)	Jun. 30, 2020USD ($)	Dec. 31, 2019USD ($)
Debt Securities, Available-for-sale, Unrealized Loss Position, Number of Positions	0	0
Equity Securities, Fair Value Based on Observable Transaction [Member] | Other Income [Member]
Equity Securities without Readily Determinable Fair Value, Upward Price Adjustment, Annual Amount	$ 1,801	$ 1,801
Other Noncurrent Assets [Member] | Equity Securities, Fair Value Based on Observable Transaction [Member]
Equity Securities without Readily Determinable Fair Value, Amount	23,593	23,593
Equity Securities without Readily Determinable Fair Value, Amount Remeasured to Fair Value	11,093	11,093
TAIWAN, PROVINCE OF CHINA
Equity Securities, FV-NI	$ 1,606	1,606	$ 1,662
Equity Securities, FV-NI, Unrealized Loss		$ 388	$ 332

Note 4 - Investments - Summary

Note 4 - Investments - Summary of Investments by Investment Category (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Available-for-sale securities, amortized cost	$ 87,084	$ 139,448
Available-for-sale securities, fair value	88,040	140,131
US Treasury Securities [Member]
Available-for-sale securities, amortized cost	0	3,752
Available-for-sale securities, fair value	0	3,759
US States and Political Subdivisions Debt Securities [Member]
Available-for-sale securities, amortized cost	19,083	6,062
Available-for-sale securities, fair value	19,220	6,119
Corporate Debt Securities [Member]
Available-for-sale securities, amortized cost	60,307	118,859
Available-for-sale securities, fair value	61,090	119,449
Asset-backed Securities [Member]
Available-for-sale securities, amortized cost	2,579	4,239
Available-for-sale securities, fair value	2,612	4,268
Commercial Paper [Member]
Available-for-sale securities, amortized cost	5,115	6,464
Available-for-sale securities, fair value	5,118	6,464
Certificates of Deposit [Member]
Available-for-sale securities, amortized cost	0	72
Available-for-sale securities, fair value	$ 0	$ 72

Note 4 - Investments - Contract

Note 4 - Investments - Contractual Maturities of Available-for-sale Securities (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Due in one year or less, cost	$ 53,653
Due in one year or less, fair value	53,963
Due between one and five years, cost	33,431
Due between one and five years, fair value	34,077
Available-for-sale securities, cost	87,084	$ 139,448
Available-for-sale securities, fair value	$ 88,040	$ 140,131

Note 5 - Inventories - Schedule

Note 5 - Inventories - Schedule of Inventory (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Raw materials	$ 38,416	$ 18,593
Work in process	31,336	19,081
Finished goods	20,667	17,339
Inventory, Net, Total	$ 90,419	$ 55,013

Note 6 - Property and Equipme_3

Note 6 - Property and Equipment, Net (Details Textual) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019	Dec. 31, 2019
Depreciation, Total	$ 6,385	$ 5,566	$ 13,265	$ 11,058
Capitalized Computer Software, Gross	8,009		8,009		$ 7,339
Capitalized Computer Software, Amortization	$ 253	$ 86	503	$ 186
Capital Expenditures Incurred but Not yet Paid			$ 11,829		$ 4,728

Note 6 - Property and Equipme_4

Note 6 - Property and Equipment, Net - Property and Equipment Components (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Property and equipment, gross	$ 235,458	$ 192,006
Less accumulated depreciation and amortization	(126,124)	(112,443)
Property and equipment, gross	109,334	79,563
Equipment [Member]
Property and equipment, gross	173,919	144,866
Office, Software, and Computer Equipment [Member]
Property and equipment, gross	41,941	37,241
Furniture and Fixtures [Member]
Property and equipment, gross	1,952	1,617
Leasehold Improvements [Member]
Property and equipment, gross	$ 17,646	$ 8,282

Note 7 - Intangible Assets - Id

Note 7 - Intangible Assets - Identifiable Intangible Assets (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Intangible assets, gross	$ 484,733	$ 335,251
Intangible assets, accumulated amortization	207,084	166,961
Intangible assets, net	277,649	168,290
Developed Technology Rights [Member]
Intangible assets, gross	229,270	186,800
Intangible assets, accumulated amortization	137,108	123,365
Intangible assets, net	92,162	63,435
Customer Relationships [Member]
Intangible assets, gross	70,540	70,540
Intangible assets, accumulated amortization	36,273	31,409
Intangible assets, net	34,267	39,131
Contractual Rights [Member]
Intangible assets, gross	102,388	0
Intangible assets, accumulated amortization	9,675	0
Intangible assets, net	92,713	0
Trade Names [Member]
Intangible assets, gross	2,310	2,310
Intangible assets, accumulated amortization	1,905	1,766
Intangible assets, net	405	544
Patents [Member]
Intangible assets, gross	1,579	1,579
Intangible assets, accumulated amortization	1,063	1,010
Intangible assets, net	516	569
Computer Software, Intangible Asset [Member]
Intangible assets, gross	78,646	74,022
Intangible assets, accumulated amortization	21,060	9,411
Intangible assets, net	$ 57,586	$ 64,611

Note 7 - Intangible Assets - Am

Note 7 - Intangible Assets - Amortization (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Amortization of intangible assets	$ 21,661	$ 17,818	$ 42,198	$ 35,526
Cost of Sales [Member]
Amortization of intangible assets	12,175	9,724	23,558	19,448
Research and Development Expense [Member]
Amortization of intangible assets	6,959	5,514	13,584	10,916
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	$ 95	$ 148	$ 192	$ 298

Note 7 - Intangible Assets - Ex

Note 7 - Intangible Assets - Expected Amortization Expense (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
2020 (remaining)	$ 43,885
2021	80,795
2022	69,413
2023	42,315
2024	27,122
Thereafter	14,119
Finite-Lived Intangible Assets, Net, Ending Balance	$ 277,649	$ 168,290

Note 7 - Intangible Assets - We

Note 7 - Intangible Assets - Weighted-average Amortization Periods Remaining (Details)	6 Months Ended
	Jun. 30, 2020
Developed Technology Rights [Member]
Finite-lived intangible assets, remaining amortization period (Year)	4 years 6 months
Customer Relationships [Member]
Finite-lived intangible assets, remaining amortization period (Year)	3 years 6 months
Contractual Rights [Member]
Finite-lived intangible assets, remaining amortization period (Year)	4 years 6 months
Trade Names [Member]
Finite-lived intangible assets, remaining amortization period (Year)	1 year 6 months
Patents [Member]
Finite-lived intangible assets, remaining amortization period (Year)	7 years 4 months 24 days
Computer Software, Intangible Asset [Member]
Finite-lived intangible assets, remaining amortization period (Year)	2 years 2 months 12 days

Note 8 - Leases (Details Textua

Note 8 - Leases (Details Textual) $ in Thousands	Jun. 30, 2020USD ($)
Lessee, Operating Lease, Renewal Term (Year)	5 years
Lessee, Operating Lease, Lease Not yet Commenced	$ 661
Minimum [Member]
Lessee, Operating Lease, Remaining Lease Term (Year)	1 year
Lessee, Operating Lease, Lease Not yet Commenced, Term of Contract (Year)	3 years
Maximum [Member]
Lessee, Operating Lease, Remaining Lease Term (Year)	10 years
Lessee, Operating Lease, Lease Not yet Commenced, Term of Contract (Year)	5 years

Note 8 - Leases - Lease Cost (D

Note 8 - Leases - Lease Cost (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019	Dec. 31, 2019
Operating lease cost	$ 2,375	$ 1,044	$ 4,526	$ 2,098
Cash paid for leases	1,741	927	3,320	2,191
Right of use assets obtained in exchange for lease obligations	$ 2,001	$ 0	$ 3,743	$ 224
Weighted average remaining lease term (years) (Year)	7 years 10 months 17 days		7 years 10 months 17 days		8 years 6 months 7 days
Weighted average discount rate	3.70%		3.70%		3.90%

Note 8 - Leases - Future Minimu

Note 8 - Leases - Future Minimum Lease Payments Under Non-cancelable Operating Leases (Details) $ in Thousands	Jun. 30, 2020USD ($)
2020 (remaining)	$ 3,726
2021	6,694
2022	6,900
2023	6,873
2024	6,621
Thereafter	23,914
Total future minimum lease payments	54,728
Less: Imputed interest	7,966
Lease incentive recognized as offset to lease liability	2,576
Liabilities [Member]
Present value of lease obligations	$ 44,186

Note 9 - Product Warranty Obl_2

Note 9 - Product Warranty Obligation (Details Textual) - USD ($) $ in Thousands	3 Months Ended
	Jun. 30, 2020	Dec. 31, 2019
Standard and Extended Product Warranty Accrual, Ending Balance	$ 110	$ 110
Standard and Extended Product Warranty Accrual, Period Increase (Decrease), Total	$ 0

Note 10 - Convertible Debt (Det

Note 10 - Convertible Debt (Details Textual) $ / shares in Units, $ in Thousands	Apr. 24, 2020USD ($)$ / shares$ / itemshares	Sep. 30, 2016USD ($)$ / shares$ / item	Jun. 30, 2020USD ($)	Jun. 30, 2020USD ($)	Jun. 30, 2019USD ($)	Dec. 31, 2015USD ($)$ / shares$ / item
Proceeds from Convertible Debt				$ 492,743	$ 0
Payments for Call Options				55,660	0
Repayments of Convertible Debt				407,782	$ 0
Exchange for Convertible Notes 2015 [Member]
Extinguishment of Debt, Amount			$ 180,454
Exchange for Convertible Notes 2016 [Member]
Extinguishment of Debt, Amount			223,090
Convertible Debt [Member]
Repayments of Convertible Debt	$ 407,782
Convertible Debt Repurchases, Shares Outstanding Impact (in shares) | shares	4,942,490
Convertible Debt [Member] | 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 (in dollars per share) | $ / shares						$ 40.16
Convertible Debt in Default, Percent Holders to Declare Due and Payable						100.00%
Derivative, Cap Price (in USD per Per Share) | $ / item						52.06
Extinguishment of Debt, Amount	$ 180,454
Adjustments to Additional Paid in Capital Equity Component of Convertible Debt Retired	(299,458)
Common Stock Issued in Relation to Repurchases of Convertible Debt, Value	295,660
Convertible Debt [Member] | 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 (in dollars per share) | $ / shares		$ 56.34
Convertible Debt in Default, Percent Holders to Declare Due and Payable		100.00%
Derivative, Cap Price (in USD per Per Share) | $ / item		73.03
Extinguishment of Debt, Amount	223,090
Convertible Debt [Member] | Convertible Notes 2020 [Member]
Debt Instrument, Face Amount	$ 506,000
Debt Instrument, Interest Rate, Stated Percentage	0.75%
Debt Instrument, Convertible, Conversion Ratio	8.0059
Debt Instrument, Convertible, Conversion Price (in dollars per share) | $ / shares	$ 124.91
Convertible Debt in Default, Percent Holders to Declare Due and Payable	100.00%
Derivative, Cap Price (in USD per Per Share) | $ / item	188.54
Debt Instrument, Convertible, Threshold Trading Days	20
Debt Instrument, Convertible, Threshold Consecutive Trading Days	30
Debt Instrument, Convertible, Threshold Percentage of Stock Price Trigger	130.00%
Convertible Debt in Bankruptcy, Insolvency, and Reorganization, Percent due and Payable	100.00%
Convertible Debt Holders in Default, Percent of Principal Amount	25.00%
Proceeds from Convertible Debt	$ 506,000
Proceeds from Convertible Debt, Portion Allocated to Long-term Debt	402,624
Proceeds from Convertible Debt, Allocated to Stockholders' Equity	103,376
Debt Issuance Costs, Gross	13,507
Convertible Debt Issuance Costs, Gross, Long-term Debt Component	10,747
Convertible Debt Issuance Costs, Gross, Equity Component	$ 2,760
Capped Call Options, Percentage of Common Shares Underlying the Convertible Debt	100.00%
Payments for Call Options	$ 55,660
Convertible Debt [Member] | Convertible Notes 2020 [Member] | Conversion Circumstance 1 [Member]
Debt Instrument, Convertible, Threshold Trading Days	20
Debt Instrument, Convertible, Threshold Consecutive Trading Days	30
Convertible Debt [Member] | Convertible Notes 2016, Issuance Costs [Member]
Adjustments to Additional Paid in Capital Equity Component of Convertible Debt Retired	$ (269,875)
Common Stock Issued in Relation to Repurchases of Convertible Debt, Value	$ 259,653
Convertible Debt, Conversion Request Received, Aggregate Principal Amount			$ 2,211	$ 2,211

Note 10 - Convertible Debt - Ca

Note 10 - Convertible Debt - Carrying Amount of Long-term Debt (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Principal	$ 619,956	$ 517,500
Unamortized debt discount	(105,568)	(38,105)
Unamortized debt issuance costs	(10,865)	(3,217)
Net carrying amount of long-term debt	503,523	476,178
Less current portion of long-term debt	48,277	217,467
Long-term debt, non-current portion	$ 455,246	$ 258,711

Note 10 - Convertible Debt - Sc

Note 10 - Convertible Debt - Schedule of Interest Expense for Convertible Debt (Details) - Convertible Debt [Member] - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Convertible Notes 2020 [Member]
Contractual interest expense			$ 759
Amortization of debt discount			3,234
Amortization of debt issuance costs			336
Total interest expense			4,329
Convertible Notes 2015 [Member]
Contractual interest expense	$ 370	$ 646	1,013	$ 1,286
Amortization of debt discount	1,704	2,877	4,740	5,667
Amortization of debt issuance costs	153	259	427	510
Total interest expense	2,227	3,782	6,180	7,463
Convertible Notes 2016 [Member]
Contractual interest expense	397	533	934	1,066
Amortization of debt discount	2,877	3,577	6,649	7,050
Amortization of debt issuance costs	236	293	545	578
Total interest expense	$ 3,510	$ 4,403	$ 8,128	$ 8,694

Note 10 - Convertible Debt - Re

Note 10 - Convertible Debt - Retired Long-term Debt (Details) - USD ($) $ in Thousands	Apr. 24, 2020	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Loss on early extinguishment		$ 13,297	$ 0	$ 13,297	$ 0
Convertible Notes 2015 [Member] | Convertible Debt [Member]
Principal	$ 180,454
Unamortized debt discount	(5,596)
Unamortized debt issuance costs	(504)
Total	174,354
Repurchase consideration allocated to the liability component	177,622
Net carrying value of debt	(174,354)
Loss on early extinguishment	3,268
Convertible Notes 2016 [Member] | Convertible Debt [Member]
Principal	223,090
Unamortized debt discount	(15,694)
Unamortized debt issuance costs	(1,287)
Total	206,109
Repurchase consideration allocated to the liability component	216,138
Net carrying value of debt	(206,109)
Loss on early extinguishment	$ 10,029

Note 11 - Other Liabilities - O

Note 11 - Other Liabilities - Other Current Liabilities (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Other Liabilities, Current, Total	$ 42,843	$ 33,531
Other Current Liabilities [Member]
Software license agreements liability	28,500	25,810
Operating lease liability	3,128	2,545
Others	$ 11,215	$ 5,176

Note 11 - Other Liabilities -_2

Note 11 - Other Liabilities - Other Long-term Liabilities (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Other Liabilities, Noncurrent, Total	$ 68,901	$ 78,917
Other Noncurrent Liabilities [Member]
Income tax payable	1,067	692
Software license agreements liability	24,823	36,144
Operating lease liability	41,058	41,074
Others	$ 1,953	$ 1,007

Note 12 - Income Taxes (Details

Note 12 - Income Taxes (Details Textual) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Income Tax Expense (Benefit), Total	$ 249	$ (587)	$ 294	$ 633
Effective Income Tax Rate Reconciliation, Percent, Total	(1.00%)	2.80%	(0.70%)	(1.50%)
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent			21.00%	21.00%
Unrecognized Tax Benefits, Period Increase (Decrease), Total	$ (5,204)		$ (3,653)

Note 13 - Earnings Per Share -

Note 13 - Earnings Per Share - Securities Not Included in Computation of Earnings Per Share (Details) - shares	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Anti-dilutive securities (in shares)	13,743,966	14,659,213	14,176,352	14,712,765
Share-based Payment Arrangement, Option [Member]
Anti-dilutive securities (in shares)	764,328	1,056,682	810,597	1,092,153
Restricted Stock and Market Value Stock Units [Member]
Anti-dilutive securities (in shares)	2,938,459	2,772,493	2,930,147	2,790,574
Convertible Debt Securities [Member]
Anti-dilutive securities (in shares)	10,041,179	10,830,038	10,435,608	10,830,038

Note 14 - Stock-based Compens_3

Note 14 - Stock-based Compensation (Details Textual) - USD ($) $ in Thousands	1 Months Ended			3 Months Ended		6 Months Ended
	Feb. 28, 2020	Feb. 28, 2019	Dec. 31, 2011	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019	Dec. 31, 2019
Common Stock, Capital Shares Reserved for Future Issuance (in shares)				5,729,552		5,729,552
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross (in shares)				0	0	0	0
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Intrinsic Value						$ 14,451	$ 4,506
Proceeds from Stock Options Exercised						$ 1,899	$ 1,132
Stock Issued During Period, Shares, Employee Stock Purchase Plans (in shares)						74,896	121,549
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount, Total				$ 209,046		$ 209,046
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Year)						2 years 8 months 26 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 (in shares)						2,750,000
Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period (Year)						4 years
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number, Ending Balance (in shares)				3,935,886		3,935,886		3,822,325
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares)						1,380,565
Performance Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period (Year)						4 years
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number, Ending Balance (in shares)				43,338		43,338
Market Value Stock Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares)		346,201
Market Value Stock Units [Member] | Minimum [Member]
Percentage of Target Number of Shares		0.00%
Market Value Stock Units, Performance Period (Year)	2 years
Market Value Stock Units [Member] | Maximum [Member]
Percentage of Target Number of Shares		225.00%
Market Value Stock Units, Performance Period (Year)	3 years

Note 14 - Stock-based Compens_4

Note 14 - Stock-based Compensation - Options Outstanding (Details) $ / shares in Units, $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 30, 2020USD ($)$ / sharesshares	Dec. 31, 2019USD ($)$ / sharesshares
Number of shares outstanding (in shares) | shares	905,141
Number of shares outstanding, weighted-average exercise price (in dollars per share) | $ / shares	$ 13.68
Number of shares outstanding, weighted-average remaining contractual life (Year)	1 year 6 months 7 days	1 year 9 months 21 days
Number of shares outstanding, aggregate intrinsic value | $	$ 54,616
Number of shares exercised (in shares) | shares	(180,369)
Number of shares exercised, weighted-average exercise price (in dollars per share) | $ / shares	$ 10.53
Number of shares outstanding (in shares) | shares	724,772	905,141
Number of shares outstanding, weighted-average exercise price (in dollars per share) | $ / shares	$ 14.46	$ 13.68
Number of shares outstanding, aggregate intrinsic value | $	$ 74,677	$ 54,616
Vested and expected to vest in the future (in shares) | shares	724,772
Number of shares vested and expected to vest in the future, weighted-average exercise price (in dollars per share) | $ / shares	$ 14.46
Number of shares vested and expected to vest in the future, weighted-average remaining contractual life (Year)	1 year 6 months 7 days
Number of shares vested and expected to vest in the future, aggregate intrinsic value | $	$ 74,677

Note 14 - Stock-based Compens_5

Note 14 - Stock-based Compensation - Outstanding Restricted Stock Units (Details) - Restricted Stock Units (RSUs) [Member]	6 Months Ended
	Jun. 30, 2020$ / sharesshares
Outstanding (in shares)	3,822,325
Outstanding, weighted-average grant date fair value (in dollars per share) | $ / shares	$ 41.38
Granted (in shares)	1,380,565
Granted, weighted-average grant date fair value (in dollars per share) | $ / shares	$ 86.59
Vested (in shares)	(1,205,934)
Vested, weighted-average grant date fair value (in dollars per share) | $ / shares	$ 41.96
Canceled (in shares)	(61,070)
Canceled, weighted-average grant date fair value (in dollars per share) | $ / shares	$ 56.19
Outstanding (in shares)	3,935,886
Outstanding, weighted-average grant date fair value (in dollars per share) | $ / shares	$ 56.82
Expected to vest (in shares)	3,860,310

Note 14 - Stock-based Compens_6

Note 14 - Stock-based Compensation - Assumptions Valuation for Market Value Stock Units (Details) $ / shares in Units, $ in Thousands	6 Months Ended
	Jun. 30, 2020USD ($)$ / sharesshares
Two Year Term Market Value Stock Units [Member]
Total target shares (in shares) | shares	53,448
Fair value per share (in dollars per share) | $ / shares	$ 119.90
Total amount to be recognized over the service period | $	$ 6,408
Risk free interest rate	1.41%
Expected volatility	41.37%
Dividend yield	0.00%
Three Year Term Market Value Stock Units [Member]
Total target shares (in shares) | shares	101,775
Fair value per share (in dollars per share) | $ / shares	$ 125.30
Total amount to be recognized over the service period | $	$ 12,752
Risk free interest rate	1.38%
Expected volatility	43.79%
Dividend yield	0.00%

Note 14 - Stock-based Compens_7

Note 14 - Stock-based Compensation - Fair Value of Employee Stock Purchase Plan (Details) - Employee Stock Purchase Plan [Member] - $ / shares	6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019
Risk-free interest rate	1.51%	2.50%
Expected life (Year)	5 months 26 days	5 months 26 days
Dividend yield	0.00%	0.00%
Expected volatility	39.00%	45.00%
Estimated fair value (in dollars per share)	$ 21.71	$ 11.11

Note 14 - Stock-based Compens_8

Note 14 - Stock-based Compensation - Stock-based Compensation Expense (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Stock-based compensation expense	$ 28,226	$ 17,961	$ 52,255	$ 36,719
Cost of Sales [Member]
Stock-based compensation expense	1,986	1,674	3,897	2,479
Research and Development Expense [Member]
Stock-based compensation expense	16,432	9,925	29,511	20,657
Selling and Marketing Expense [Member]
Stock-based compensation expense	5,261	3,269	10,462	7,417
General and Administrative Expense [Member]
Stock-based compensation expense	$ 4,547	$ 3,093	$ 8,385	$ 6,166

Note 15 - Fair Value Measurem_3

Note 15 - Fair Value Measurements (Details Textual) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Convertible Debt, Fair Value Disclosures	$ 888,791	$ 845,296

Note 15 - Fair Value Measurem_4

Note 15 - Fair Value Measurements - Assets and Liabilities Carried at Fair Value on Recurring Basis (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Total fair value of assets	$ 102,393	$ 341,444
Fair Value, Inputs, Level 1 [Member]
Total fair value of assets	5,519	71,325
Fair Value, Inputs, Level 2 [Member]
Total fair value of assets	96,874	270,119
Money Market Funds [Member]
Cash equivalents	6,155	190,598
Money Market Funds [Member] | Fair Value, Inputs, Level 1 [Member]
Cash equivalents	5,519	67,494
Money Market Funds [Member] | Fair Value, Inputs, Level 2 [Member]
Cash equivalents	636	123,104
Commercial Paper [Member]
Cash equivalents	8,198	9,465
Investment in marketable securities	5,118	6,464
Commercial Paper [Member] | Fair Value, Inputs, Level 1 [Member]
Cash equivalents	0	0
Investment in marketable securities	0	0
Commercial Paper [Member] | Fair Value, Inputs, Level 2 [Member]
Cash equivalents	8,198	9,465
Investment in marketable securities	5,118	6,464
Municipal Bonds [Member]
Cash equivalents		1,250
Investment in marketable securities	19,220	6,119
Municipal Bonds [Member] | Fair Value, Inputs, Level 1 [Member]
Cash equivalents		0
Investment in marketable securities	0	0
Municipal Bonds [Member] | Fair Value, Inputs, Level 2 [Member]
Cash equivalents		1,250
Investment in marketable securities	19,220	6,119
Corporate Debt Securities [Member]
Investment in marketable securities	61,090	119,449
Corporate Debt Securities [Member] | Fair Value, Inputs, Level 1 [Member]
Investment in marketable securities	0	0
Corporate Debt Securities [Member] | Fair Value, Inputs, Level 2 [Member]
Investment in marketable securities	61,090	119,449
US Treasury Securities [Member]
Investment in marketable securities		3,759
US Treasury Securities [Member] | Fair Value, Inputs, Level 1 [Member]
Investment in marketable securities		3,759
US Treasury Securities [Member] | Fair Value, Inputs, Level 2 [Member]
Investment in marketable securities		0
Asset-backed Securities [Member]
Investment in marketable securities	2,612	4,268
Asset-backed Securities [Member] | Fair Value, Inputs, Level 1 [Member]
Investment in marketable securities	0	0
Asset-backed Securities [Member] | Fair Value, Inputs, Level 2 [Member]
Investment in marketable securities	$ 2,612	4,268
Certificates of Deposit [Member]
Investment in marketable securities		72
Certificates of Deposit [Member] | Fair Value, Inputs, Level 1 [Member]
Investment in marketable securities		72
Certificates of Deposit [Member] | Fair Value, Inputs, Level 2 [Member]
Investment in marketable securities		$ 0

Note 16 - Segment and Geograp_3

Note 16 - Segment and Geographic Information (Details Textual) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Non-US [Member]
Long-Lived Assets	$ 53,226	$ 33,826
TAIWAN, PROVINCE OF CHINA
Long-Lived Assets	$ 43,945	$ 27,750

Note 16 - Segment and Geograp_4

Note 16 - Segment and Geographic Information - Revenue by Geographic Region (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Revenue	$ 175,292	$ 86,285	$ 314,722	$ 168,508
CHINA
Revenue	102,019	38,449	169,860	76,266
UNITED STATES
Revenue	33,477	20,520	75,081	40,967
THAILAND
Revenue	18,801	14,225	32,731	26,844
Other Country [Member]
Revenue	$ 20,995	$ 13,091	$ 37,050	$ 24,431

Note 17 - Commitments and Con_3

Note 17 - Commitments and Contingencies (Details Textual) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Value of Open Purchase Orders	$ 31,278
Indemnification Agreement [Member]
Loss Contingency Accrual, Ending Balance	$ 0	$ 0

Note 17 - Commitments and Con_4

Note 17 - Commitments and Contingencies - Future Minimum Payments Under Non-cancelable Service Agreements (Details) $ in Thousands	Jun. 30, 2020USD ($)
2020 (remaining)	$ 187
2021	280
2022	226
2023	130
2024	95
Thereafter	55
Total	$ 973