INPHI 10-Q 4 Nov 19 2019 Q3 Quarterly report Financial data

Document And Entity Information

Document And Entity Information - shares	9 Months Ended
	Sep. 30, 2019	Oct. 31, 2019
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	Q3
Document Fiscal Year Focus	2019
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Sep. 30, 2019
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		45,671,999

Unaudited Condensed Consolidate

Unaudited Condensed Consolidated Balance Sheets (Current Period Unaudited) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Current assets:
Cash and cash equivalents	$ 151,118	$ 172,018
Investments in marketable securities	273,643	235,339
Accounts receivable, net	54,829	61,271
Inventories	56,715	33,052
Prepaid expenses and other current assets	7,011	9,600
Total current assets	543,316	511,280
Property and equipment, net	79,872	70,740
Goodwill	104,502	104,502
Intangible assets, net	142,165	180,447
Right of use assets, net	10,823	0
Other assets, net	31,025	22,904
Total assets	911,703	889,873
Current liabilities:
Accounts payable	27,568	15,891
Deferred revenue	4,390	5,432
Accrued employee expenses	10,252	11,206
Other accrued expenses	8,313	7,595
Other current liabilities	20,761	24,319
Total current liabilities	71,284	64,443
Convertible debt	468,840	447,825
Other long-term liabilities	23,837	10,911
Total liabilities	563,961	523,179
Commitments and contingencies (Note 16)
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; 45,651,211 and 44,292,722 issued and outstanding at September 30, 2019 and December 31, 2018, respectively	46	44
Additional paid-in capital	575,456	536,157
Accumulated deficit	(229,399)	(169,896)
Accumulated other comprehensive income	1,639	389
Total stockholders’ equity	347,742	366,694
Total liabilities and stockholders’ equity	$ 911,703	$ 889,873

Unaudited Condensed Consolida_2

Unaudited Condensed Consolidated Balance Sheets (Current Period Unaudited) (Parentheticals) - $ / shares	Sep. 30, 2019	Dec. 31, 2018
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)	45,651,211	44,292,722
Common stock, outstanding (in shares)	45,651,211	44,292,722

Unaudited Condensed Consolida_3

Unaudited Condensed Consolidated Statements of Income (Loss) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Revenue	$ 94,231	$ 78,009	$ 262,739	$ 207,959
Cost of revenue	39,749	34,547	111,517	92,340
Gross profit	54,482	43,462	151,222	115,619
Operating expenses:
Research and development	44,895	41,558	133,999	127,300
Sales and marketing	12,311	10,819	35,344	32,472
General and administrative	8,165	7,134	22,478	21,767
Total operating expenses	65,371	59,511	191,821	181,539
Loss from operations	(10,889)	(16,049)	(40,599)	(65,920)
Interest expense	(8,971)	(8,202)	(25,946)	(23,870)
Other income, net	4,299	1,383	8,294	7,264
Loss before income taxes	(15,561)	(22,868)	(58,251)	(82,526)
Provision (benefit) for income taxes	619	(203)	1,252	(8,406)
Net loss	$ (16,180)	$ (22,665)	$ (59,503)	$ (74,120)
Earnings per share:
Basic earnings per share (in dollars per share)	$ (0.36)	$ (0.52)	$ (1.32)	$ (1.70)
Diluted earnings per share (in dollars per share)	$ (0.36)	$ (0.52)	$ (1.32)	$ (1.70)
Weighted-average shares used in computing earnings per share:
Basic (in shares)	45,517,862	43,934,598	45,057,539	43,535,033
Diluted (in shares)	45,517,862	43,934,598	45,057,539	43,535,033

Unaudited Condensed Consolida_4

Unaudited Condensed Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Net loss	$ (16,180)	$ (22,665)	$ (59,503)	$ (74,120)
Other comprehensive income (loss):
Change in unrealized gain or loss, net of tax	144	140	1,250	5
Realized gain reclassified into earnings, net of tax	0	0	0	(1)
Comprehensive loss	$ (16,036)	$ (22,525)	$ (58,253)	$ (74,116)

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, 2017	42,780,229
Balance at Dec. 31, 2017	$ 43	$ 484,934	$ (74,145)	$ 569	$ 411,401
Issuance of common stock from exercise of stock options (in shares)	136,690
Issuance of common stock from exercise of stock options	$ 0	291	0	0	291
Issuance of common stock from restricted stock unit grant, net of shares withheld for tax (in shares)	102,702
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		(1,923)			(1,923)
Issuance of common stock from employee stock purchase plan purchases (in shares)	177,771
Issuance of common stock from employee stock purchase plan purchases	$ 0	3,704	0	0	3,704
Stock-based compensation expense	0	14,553	0	0	14,553
Net loss	0	0	(22,991)	0	(22,991)
Other comprehensive income, net	$ 0	0	0	(275)	(275)
Balance (in shares) at Mar. 31, 2018	43,197,392
Balance at Mar. 31, 2018	$ 43	501,559	(97,136)	294	404,760
Balance (in shares) at Dec. 31, 2017	42,780,229
Balance at Dec. 31, 2017	$ 43	484,934	(74,145)	569	$ 411,401
Issuance of common stock from employee stock purchase plan purchases (in shares)					283,493
Net loss					$ (74,120)
Balance (in shares) at Sep. 30, 2018	44,027,738
Balance at Sep. 30, 2018	$ 44	524,915	(148,265)	573	377,267
Balance (in shares) at Mar. 31, 2018	43,197,392
Balance at Mar. 31, 2018	$ 43	501,559	(97,136)	294	404,760
Issuance of common stock from exercise of stock options (in shares)	21,614
Issuance of common stock from exercise of stock options	$ 0	198	0	0	198
Issuance of common stock from restricted stock unit grant, net of shares withheld for tax (in shares)	595,337
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		(10,398)			(10,397)
Stock-based compensation expense	0	16,216	0	0	16,216
Net loss	0	0	(28,464)	0	(28,464)
Other comprehensive income, net	$ 0	0	0	139	139
Balance (in shares) at Jun. 30, 2018	43,814,343
Balance at Jun. 30, 2018	$ 44	507,575	(125,600)	433	382,452
Issuance of common stock from exercise of stock options (in shares)	5,998
Issuance of common stock from exercise of stock options	$ 0	38	0	0	38
Issuance of common stock from restricted stock unit grant, net of shares withheld for tax (in shares)	101,675
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		(1,640)			(1,640)
Issuance of common stock from employee stock purchase plan purchases (in shares)	105,722
Issuance of common stock from employee stock purchase plan purchases	$ 0	2,202	0	0	2,202
Stock-based compensation expense	0	16,740	0	0	16,740
Net loss	0	0	(22,665)	0	(22,665)
Other comprehensive income, net	$ 0	0	0	140	140
Balance (in shares) at Sep. 30, 2018	44,027,738
Balance at Sep. 30, 2018	$ 44	524,915	(148,265)	573	377,267
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, 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 exercise of stock options (in shares)					189,445
Issuance of common stock from employee stock purchase plan purchases (in shares)					208,721
Net loss					$ (59,503)
Balance (in shares) at Sep. 30, 2019	45,651,211
Balance at Sep. 30, 2019	$ 46	575,456	(229,399)	1,639	347,742
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, 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
Issuance of common stock from exercise of stock options (in shares)	65,923
Issuance of common stock from exercise of stock options	$ 0	775	0	0	775
Issuance of common stock from restricted stock unit grant, net of shares withheld for tax (in shares)	96,717
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		(3,176)			(3,176)
Issuance of common stock from employee stock purchase plan purchases (in shares)	87,172
Issuance of common stock from employee stock purchase plan purchases	$ 0	2,897	0	0	2,897
Stock-based compensation expense	0	19,878	0	0	19,878
Net loss	0	0	(16,180)	0	(16,180)
Other comprehensive income, net	$ 0	0	0	144	144
Balance (in shares) at Sep. 30, 2019	45,651,211
Balance at Sep. 30, 2019	$ 46	$ 575,456	$ (229,399)	$ 1,639	$ 347,742

Unaudited Condensed Consolida_6

Unaudited Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018
Cash flows from operating activities
Net loss	$ (59,503)	$ (74,120)
Adjustments to reconcile net loss to net cash provided by operating activities:
Depreciation and amortization	73,358	59,944
Stock-based compensation	56,597	47,509
Deferred income taxes	936	(8,858)
Accretion of convertible debt and amortization of debt issuance costs	21,015	19,566
Net unrealized gain on equity investments	(2,077)	(2,375)
Amortization of discount on marketable securities	(856)	(341)
Other noncash items	323	362
Changes in assets and liabilities:
Accounts receivable	4,942	19,553
Inventories	(23,663)	(2,403)
Prepaid expenses and other assets	785	704
Income tax payable/receivable	215	(1,607)
Accounts payable	2,627	918
Accrued expenses	(11)	(9,235)
Deferred revenue	(1,042)	(135)
Other liabilities	1,343	(1,080)
Net cash provided by operating activities	74,989	48,402
Cash flows from investing activities
Purchases of property and equipment	(17,227)	(23,876)
Purchases of marketable securities	(216,126)	(177,003)
Sales of marketable securities	21,920	6,312
Maturities of marketable securities	157,327	190,060
Payments related to purchase of intangible assets	(21,032)	(17,178)
Purchases of equity investments	(3,000)	(12,811)
Proceeds from sale of equity investment	0	2,414
Other investing activity	0	125
Net cash used in investing activities	(78,138)	(31,957)
Cash flows from financing activities
Proceeds from exercise of stock options	1,907	522
Proceeds from employee stock purchase plan purchases	6,374	5,906
Payment of obligations related to equipment financing	(334)	(417)
Repayment of long-term loan	0	310
Minimum tax withholding paid on behalf of employees for net share settlement	(25,698)	(13,796)
Net cash used in financing activities	(17,751)	(7,475)
Net increase (decrease) in cash and cash equivalents	(20,900)	8,970
Cash and cash equivalents at beginning of period	172,018	163,450
Cash and cash equivalents at end of period	151,118	172,420
Supplemental cash flow information:
Interest paid	4,842	4,214
Income taxes paid	177	2,000
Supplemental disclosure of non-cash investing and financing activities:
Software license intangible assets acquired	15,350	18,611
Marketable equity investment acquired as settlement of receivable from customer	$ 1,500	$ 0

Note 1 - Organization and Basis

Note 1 - Organization and Basis of Presentation	9 Months Ended
	Sep. 30, 2019
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, 2018 10 February 28, 2019. 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 September 30, 2019 three nine September 30, 2019 2018 nine September 30, 2019 2018 three nine September 30, 2019 not

Note 2 - Recent Accounting Pron

Note 2 - Recent Accounting Pronouncements	9 Months Ended
	Sep. 30, 2019
Notes to Financial Statements
New Accounting Pronouncements and Changes in Accounting Principles [Text Block]	2. In February 2016, 12 twelve not January 1, 2019. 7 In June 2016, December 15, 2019, In January 2017, 2 2 December 15, 2019, January 1, 2019. not In February 2018, December 15, 2018. January 1, 2019. not In June 2018, December 15, 2018. January 1, 2019. not In August 2018, no 1 2 3 December 15, 2019. In August 2018, 350 40 December 15, 2019. In August 2018, No. 33 10532, November 5, 2018. fourth 2018 In November 2018, not December 15, 2019,

Note 3 - Investments

Note 3 - Investments	9 Months Ended
	Sep. 30, 2019
Notes to Financial Statements
Investment [Text Block]	3. The following table summarizes the investments in marketable securities by investment category: September 30, 2019 December 31, 2018 Cost Fair Value Cost Fair Value Available-for-sale securities: U.S. Treasury securities $ 3,745 $ 3,748 $ — $ — Municipal bonds 6,041 6,100 6,751 6,733 Agency bonds 10,999 10,999 — — Corporate notes/bonds 178,582 179,289 146,466 146,126 Variable rate demand notes 12,900 12,900 8,900 8,900 Asset backed securities 15,167 15,215 32,986 32,923 Commercial paper 45,034 45,042 39,707 39,701 Certificate of deposit 350 350 956 956 Total investments $ 272,818 $ 273,643 $ 235,766 $ 235,339 As of September 30, 2019 September 30, 2019 The contractual maturities of available-for-sale securities at September 30, 2019 Cost Fair Value Due in one year or less $ 161,970 $ 162,238 Due between one and five years 95,130 95,689 Due after five years 15,718 15,716 $ 272,818 $ 273,643 The Company has a marketable equity investment in a company located in Taiwan. The fair value of the investment and unrealized loss as of September 30, 2019 three September 30, 2019, September 30, 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. As of September 30, 2019 three March 31, 2018 September 30, 2019. three September 30, 2019 March 31, 2018,

Note 4 - Inventories

Note 4 - Inventories	9 Months Ended
	Sep. 30, 2019
Notes to Financial Statements
Inventory Disclosure [Text Block]	4. Inventories consist of the following: September 30, December 31, 2019 2018 Raw materials $ 20,414 $ 12,435 Work in process 21,904 13,602 Finished goods 14,397 7,015 $ 56,715 $ 33,052

Note 5 - Property and Equipment

Note 5 - Property and Equipment, Net	9 Months Ended
	Sep. 30, 2019
Notes to Financial Statements
Property, Plant and Equipment Disclosure [Text Block]	5. Property and equipment consist of the following: September 30, December 31, 2019 2018 Laboratory and production equipment $ 142,905 $ 121,716 Office, software and computer equipment 34,231 30,190 Furniture and fixtures 1,585 1,558 Leasehold improvements 7,908 7,609 186,629 161,073 Less accumulated depreciation and amortization (106,757 ) (90,333 ) $ 79,872 $ 70,740 Depreciation and amortization expense of property and equipment for the three nine September 30, 2019 three nine September 30, 2018 As of September 30, 2019 December 31, 2018 three nine September 30, 2019 three nine September 30, 2018 Property and equipment not September 30, 2019 December 31, 2018

Note 6 - Intangible Assets

Note 6 - Intangible Assets	9 Months Ended
	Sep. 30, 2019
Notes to Financial Statements
Goodwill and Intangible Assets Disclosure [Text Block]	6. The following table presents details of intangible assets: September 30, 2019 December 31, 2018 Gross Accumulated Amortization Net Gross Accumulated Amortization Net Developed technology $ 186,800 $ 115,550 $ 71,250 $ 186,800 $ 86,378 $ 100,422 Customer relationships 70,540 28,977 41,563 70,540 21,681 48,859 Trade name 2,310 1,696 614 2,310 1,350 960 Patents 1,579 980 599 1,579 881 698 Software 74,943 46,804 28,139 61,406 31,898 29,508 $ 336,172 $ 194,007 $ 142,165 $ 322,635 $ 142,188 $ 180,447 The following table presents amortization of intangible assets for the three nine September 30, 2019 2018 Three Months Ended Nine Months Ended September 30, September 30, 2019 2018 2019 2018 Cost of goods sold $ 9,724 $ 9,723 $ 29,172 $ 23,121 Research and development 5,806 5,058 16,722 14,138 Sales and marketing 2,432 2,432 7,296 7,296 General and administrative 147 151 445 458 $ 18,109 $ 17,364 $ 53,635 $ 45,013 Based on the amount of intangible assets subject to amortization at September 30, 2019 five 2019 (remaining) $ 18,988 2020 42,743 2021 37,892 2022 29,268 2023 12,435 Thereafter 839 $ 142,165 The weighted-average amortization periods remaining by intangible asset category were as follows (in years): Developed technology 3.2 Customer relationship 4.3 Trade name 2.2 Patents 7.6 Software 2.2

Note 7 - Leases

Note 7 - Leases	9 Months Ended
	Sep. 30, 2019
Notes to Financial Statements
Lessee, Operating Leases [Text Block]	7. On January 1, 2019, 2016 02, 842 not January 1, 2019. twelve not January 1, 2019, not The Company determines if an arrangement is a lease at inception. Operating leases are included in operating lease ROU assets, other current liabilities and other long-term liabilities on the condensed consolidated balance sheets. Finance leases are included in property and equipment, other current liabilities, and other long-term liabilities on the condensed consolidated balance sheets. As of the adoption date and September 30, 2019 not Operating lease ROU assets and operating lease liabilities are recognized based on the present value of the future minimum lease payments over the lease term at commencement date. As most of the leases do not may The Company has operating leases for office facilities. The leases have remaining lease terms of one seven may five Information related to operating leases for the three nine September 30, 2019 Three Months Ended Nine Months Ended September 30, 2019 September 30, 2019 Operating lease cost $ 1,170 $ 3,268 Cash paid for leases 1,028 3,219 Right of use assets obtained in exchange for lease obligations 2,927 3,151 Weighted average remaining lease term and weighted average discount as of September 30, 2019 Weighted average remaining lease term (years) 4.41 Weighted average discount rate 3.3 % Future minimum lease payments under non-cancellable leases as of September 30, 2019 2019 (remaining) $ 1,345 2020 3,489 2021 2,547 2022 2,573 2023 2,506 Thereafter 2,365 Total future minimum lease payments 14,825 Less: Imputed interest 1,172 Lease incentive 975 Present value of lease obligations $ 12,678 As of September 30, 2019 not fourth 2019 five As previously reported in the Company’s Annual Report on Form 10 December 31, 2018 840 December 31, 2018 2019 $ 4,588 2020 2,252 2021 1,883 2022 1,722 2023 1,615 2024 and thereafter 1,698 Total $ 13,758 For the three nine September 30, 2018

Note 8 - Product Warranty Oblig

Note 8 - Product Warranty Obligation	9 Months Ended
	Sep. 30, 2019
Notes to Financial Statements
Product Warranty Disclosure [Text Block]	8. As of September 30, 2019 December 31, 2018 three nine September 30, 2019 2018

Note 9 - Convertible Debt

Note 9 - Convertible Debt	9 Months Ended
	Sep. 30, 2019
Convertible Debt [Member]
Notes to Financial Statements
Debt Disclosure [Text Block]	9. The carrying amount of the Company’s long-term debt consists of the following: September 30, December 31, 2019 2018 Principal $ 517,500 $ 517,500 Less: Unamortized debt discount (44,863 ) (64,222 ) Unamortized debt issuance costs (3,797 ) (5,453 ) Net carrying amount of long-term debt 468,840 447,825 Less current portion of long-term debt — — Long-term debt, non-current portion $ 468,840 $ 447,825 In December 2015, 2020 2015” 2015 December 1, 2020, 2015 June 1 December 1 June 1, 2016. $1 2015, three September 30, 2019 nine September 30, 2019 three September 30, 2018 nine September 30, 2018 In connection with the issuance of the Convertible Notes 2015, 2015” 2015, 2015, 2015 In September 2016, 2021 2016”, 2015, 2016 September 1, 2021, 2016 March 1 September 1 March 1, 2017. $1 2016, three September 30, 2019 nine September 30, 2019 three September 30, 2018 nine September 30, 2018 In connection with the issuance of the Convertible Notes 2016, 2016” 2016, 2016, 2016

Note 10 - Other Liabilities

Note 10 - Other Liabilities	9 Months Ended
	Sep. 30, 2019
Notes to Financial Statements
Other Liabilities Disclosure [Text Block]	10. Other current liabilities consist of the following: September 30, December 31, 2019 2018 Intangible asset liability $ 11,708 $ 21,945 Operating lease liability 2,837 — Payable to end customer 5,017 162 Others 1,199 2,212 $ 20,761 $ 24,319 Other long-term liabilities consist of the following: September 30, December 31, 2019 2018 Deferred rent $ 31 $ 1,100 Income tax payable 692 706 Intangible asset liability 12,516 7,961 Operating lease liability 9,841 — Others 757 1,144 $ 23,837 $ 10,911

Note 11 - Income Taxes

Note 11 - Income Taxes	9 Months Ended
	Sep. 30, 2019
Notes to Financial Statements
Income Tax Disclosure [Text Block]	11. 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 nine September 30, 2019 2018 not September 30, 2019 2018 The Company recorded an income tax provision of $619 and $1,252 in the three nine September 30, 2019 three nine September 30, 2019 The Company recorded an income tax benefit of $203 and $8,406 in the three nine September 30, 2018 three nine September 30, 2018 nine September 30, 2018 2018 During the three nine September 30, 2019 September 30, 2019 The Company does not

Note 12 - Earnings Per Share

Note 12 - Earnings Per Share	9 Months Ended
	Sep. 30, 2019
Notes to Financial Statements
Earnings Per Share [Text Block]	12. The following securities were not Three Months Ended Nine Months Ended September 30, September 30, 2019 2018 2019 2018 Common stock options 999,357 1,186,358 1,061,221 1,220,323 Unvested restricted stock units and market value stock units 2,781,820 2,945,422 2,787,656 2,886,675 Convertible debt 10,830,038 10,830,038 10,830,038 10,830,038 14,611,215 14,961,818 14,678,915 14,937,036

Note 13 - Stock-based Compensat

Note 13 - Stock-based Compensation	9 Months Ended
	Sep. 30, 2019
Notes to Financial Statements
Share-based Payment Arrangement [Text Block]	13. In June 2010, 2010 “2010 November 2010. 2010 2010 2010 September 30, 2019 2010 Stock Option Awards The Company did not three nine September 30, 2019 2018 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, 2018 1,159,121 $ 12.94 2.62 $ 22,267 Exercised (189,445 ) $ 10.07 Outstanding at September 30, 2019 969,676 $ 13.50 2.01 $ 46,107 Vested and Exercisable at September 30, 2019 969,676 $ 13.50 2.01 $ 46,107 The intrinsic value of options outstanding, exercisable and vested and expected to vest is calculated based on the difference between the exercise price and the fair value of the Company’s common stock as of the respective balance sheet dates. The total intrinsic value of options exercised during the nine September 30, 2019 2018 nine September 30, 2019 2018 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 The following table summarizes information regarding outstanding RSUs: Number of Shares Weighted Average Grant Date Fair Value Per Share Outstanding at December 31, 2018 4,051,685 $ 34.68 Granted 1,857,453 $ 46.77 Vested (1,500,158 ) $ 32.73 Canceled (363,418 ) $ 37.68 Outstanding at September 30, 2019 4,045,562 $ 40.69 Expected to vest at September 30, 2019 3,956,449 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 nine September 30, 2019 September 30, 2019 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 nine September 30, 2019 2018 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: Three Months ended Nine Months Ended September 30, September 30, 2019 2018 2019 2018 Risk-free interest rate 1.93 % 2.24 % 2.26 % 2.01 % Expected life (in years) 0.50 0.50 0.49 0.50 Dividend yield — — — — Expected volatility 39 % 45 % 43 % 46 % Estimated fair value $ 16.50 $ 9.29 $ 13.35 $ 8.35 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 Nine Months Ended September 30, September 30, 2019 2018 2019 2018 Cost of goods sold $ 1,953 $ 636 $ 4,432 $ 1,810 Research and development 10,297 9,614 30,954 27,853 Sales and marketing 4,312 3,702 11,729 10,185 General and administrative 3,316 2,788 9,482 7,661 $ 19,878 $ 16,740 $ 56,597 $ 47,509 Total unrecognized compensation cost related to unvested restricted stock units at September 30, 2019

Note 14 - Fair Value Measuremen

Note 14 - Fair Value Measurements	9 Months Ended
	Sep. 30, 2019
Notes to Financial Statements
Fair Value Disclosures [Text Block]	14. 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 September 30, 2019 December 31, 2018 2 September 30, 2019 December 31, 2018 The following table presents information about assets and liabilities required to be carried at fair value on a recurring basis: September 30, 2019 Total Level 1 Level 2 Assets Cash equivalents: Money market funds $ 1,137 $ 63 $ 1,074 Commercial paper 62,662 — 62,662 Municipal bonds 2,149 — 2,149 Investment in marketable debt securities: U.S. Treasury securities 3,748 3,748 — Municipal bonds 6,100 — 6,100 Agency bonds 10,999 — 10,999 Corporate notes/bonds 179,289 — 179,289 Variable rate demand notes 12,900 — 12,900 Asset backed securities 15,215 — 15,215 Commercial paper 45,042 — 45,042 Certificate of deposit 350 350 — $ 339,591 $ 4,161 $ 335,430 December 31, 2018 Total Level 1 Level 2 Assets Cash equivalents: Money market funds $ 740 $ 38 $ 702 Commercial paper 96,759 — 96,759 Investment in marketable securities: Municipal bonds 6,733 — 6,733 Corporate notes/bonds 146,126 — 146,126 Variable rate demand notes 8,900 — 8,900 Asset-backed securities 32,923 — 32,923 Commercial paper 39,701 — 39,701 Certificate of deposit 956 956 — $ 332,838 $ 994 $ 331,844 As discussed in note 3, 1 3, 3

Note 15 - Segment and Geographi

Note 15 - Segment and Geographic Information	9 Months Ended
	Sep. 30, 2019
Notes to Financial Statements
Segment Reporting Disclosure [Text Block]	15. The Company operates in one reportable segment. The Company’s Chief Executive Officer, who is considered to be the chief operating decision maker, manages the Company’s operations as a whole and reviews consolidated financial information for purposes of evaluating financial performance and allocating resources. Revenue by region is classified based on the locations to which the products are shipped, which may The following table sets forth the Company’s revenue by geographic region: Three Months Ended Nine Months Ended September 30, September 30, 2019 2018 2019 2018 China $ 34,503 $ 31,723 $ 110,769 $ 70,710 United States 32,936 25,746 73,902 72,710 Thailand 14,816 10,687 41,661 26,807 Other 11,976 9,853 36,407 37,732 $ 94,231 $ 78,009 $ 262,739 $ 207,959 As of September 30, 2019 December 31, 2018

Note 16 - Commitments and Conti

Note 16 - Commitments and Contingencies	9 Months Ended
	Sep. 30, 2019
Notes to Financial Statements
Commitments and Contingencies Disclosure [Text Block]	16. 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 2024. September 30, 2019 2019 (remaining) $ 448 2020 14,472 2021 13,867 2022 9,952 2023 5 Thereafter 2 Total $ 38,746 The Company depends upon third September 30, 2019 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 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, 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 ClariPhy Certain customers of ClariPhy had made claims associated with matters occurring prior to the acquisition date, including a demand letter the Company received relating to products purchased by a customer from ClariPhy. A customer alleged that the products did not July 2019, Indemnifications In the ordinary course of business, the Company may not third may may not not September 30, 2019 December 31, 2018

Significant Accounting Policies

Significant Accounting Policies (Policies)	9 Months Ended
	Sep. 30, 2019
Accounting Policies [Abstract]
New Accounting Pronouncements, Policy [Policy Text Block]	In February 2016, 12 twelve not January 1, 2019. 7 In June 2016, December 15, 2019, In January 2017, 2 2 December 15, 2019, January 1, 2019. not In February 2018, December 15, 2018. January 1, 2019. not In June 2018, December 15, 2018. January 1, 2019. not In August 2018, no 1 2 3 December 15, 2019. In August 2018, 350 40 December 15, 2019. In August 2018, No. 33 10532, November 5, 2018. fourth 2018 In November 2018, not December 15, 2019,

Note 3 - Investments (Tables)

Note 3 - Investments (Tables)	9 Months Ended
	Sep. 30, 2019
Notes Tables
Available-for-sale Securities [Table Text Block]	September 30, 2019 December 31, 2018 Cost Fair Value Cost Fair Value Available-for-sale securities: U.S. Treasury securities $ 3,745 $ 3,748 $ — $ — Municipal bonds 6,041 6,100 6,751 6,733 Agency bonds 10,999 10,999 — — Corporate notes/bonds 178,582 179,289 146,466 146,126 Variable rate demand notes 12,900 12,900 8,900 8,900 Asset backed securities 15,167 15,215 32,986 32,923 Commercial paper 45,034 45,042 39,707 39,701 Certificate of deposit 350 350 956 956 Total investments $ 272,818 $ 273,643 $ 235,766 $ 235,339
Investments Classified by Contractual Maturity Date [Table Text Block]	Cost Fair Value Due in one year or less $ 161,970 $ 162,238 Due between one and five years 95,130 95,689 Due after five years 15,718 15,716 $ 272,818 $ 273,643

Note 4 - Inventories (Tables)

Note 4 - Inventories (Tables)	9 Months Ended
	Sep. 30, 2019
Notes Tables
Schedule of Inventory, Current [Table Text Block]	September 30, December 31, 2019 2018 Raw materials $ 20,414 $ 12,435 Work in process 21,904 13,602 Finished goods 14,397 7,015 $ 56,715 $ 33,052

Note 5 - Property and Equipme_2

Note 5 - Property and Equipment, Net (Tables)	9 Months Ended
	Sep. 30, 2019
Notes Tables
Property, Plant and Equipment [Table Text Block]	September 30, December 31, 2019 2018 Laboratory and production equipment $ 142,905 $ 121,716 Office, software and computer equipment 34,231 30,190 Furniture and fixtures 1,585 1,558 Leasehold improvements 7,908 7,609 186,629 161,073 Less accumulated depreciation and amortization (106,757 ) (90,333 ) $ 79,872 $ 70,740

Note 6 - Intangible Assets (Tab

Note 6 - Intangible Assets (Tables)	9 Months Ended
	Sep. 30, 2019
Notes Tables
Schedule of Finite-Lived Intangible Assets [Table Text Block]	September 30, 2019 December 31, 2018 Gross Accumulated Amortization Net Gross Accumulated Amortization Net Developed technology $ 186,800 $ 115,550 $ 71,250 $ 186,800 $ 86,378 $ 100,422 Customer relationships 70,540 28,977 41,563 70,540 21,681 48,859 Trade name 2,310 1,696 614 2,310 1,350 960 Patents 1,579 980 599 1,579 881 698 Software 74,943 46,804 28,139 61,406 31,898 29,508 $ 336,172 $ 194,007 $ 142,165 $ 322,635 $ 142,188 $ 180,447
Finite-lived Intangible Assets Amortization Expense [Table Text Block]	Three Months Ended Nine Months Ended September 30, September 30, 2019 2018 2019 2018 Cost of goods sold $ 9,724 $ 9,723 $ 29,172 $ 23,121 Research and development 5,806 5,058 16,722 14,138 Sales and marketing 2,432 2,432 7,296 7,296 General and administrative 147 151 445 458 $ 18,109 $ 17,364 $ 53,635 $ 45,013
Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block]	2019 (remaining) $ 18,988 2020 42,743 2021 37,892 2022 29,268 2023 12,435 Thereafter 839 $ 142,165
Finite Lived Intangible Assets Remaining Amortization Period [Table Text Block]	Developed technology 3.2 Customer relationship 4.3 Trade name 2.2 Patents 7.6 Software 2.2

Note 7 - Leases (Tables)

Note 7 - Leases (Tables)	9 Months Ended
	Sep. 30, 2019
Notes Tables
Lease, Cost [Table Text Block]	Three Months Ended Nine Months Ended September 30, 2019 September 30, 2019 Operating lease cost $ 1,170 $ 3,268 Cash paid for leases 1,028 3,219 Right of use assets obtained in exchange for lease obligations 2,927 3,151 Weighted average remaining lease term (years) 4.41 Weighted average discount rate 3.3 %
Lessee, Operating Lease, Liability, Maturity [Table Text Block]	2019 (remaining) $ 1,345 2020 3,489 2021 2,547 2022 2,573 2023 2,506 Thereafter 2,365 Total future minimum lease payments 14,825 Less: Imputed interest 1,172 Lease incentive 975 Present value of lease obligations $ 12,678
Schedule of Future Minimum Rental Payments for Operating Leases [Table Text Block]	2019 $ 4,588 2020 2,252 2021 1,883 2022 1,722 2023 1,615 2024 and thereafter 1,698 Total $ 13,758

Note 9 - Convertible Debt (Tabl

Note 9 - Convertible Debt (Tables)	9 Months Ended
	Sep. 30, 2019
Notes Tables
Schedule of Long-term Debt Instruments [Table Text Block]	September 30, December 31, 2019 2018 Principal $ 517,500 $ 517,500 Less: Unamortized debt discount (44,863 ) (64,222 ) Unamortized debt issuance costs (3,797 ) (5,453 ) Net carrying amount of long-term debt 468,840 447,825 Less current portion of long-term debt — — Long-term debt, non-current portion $ 468,840 $ 447,825

Note 10 - Other Liabilities (Ta

Note 10 - Other Liabilities (Tables)	9 Months Ended
	Sep. 30, 2019
Notes Tables
Other Current Liabilities [Table Text Block]	September 30, December 31, 2019 2018 Intangible asset liability $ 11,708 $ 21,945 Operating lease liability 2,837 — Payable to end customer 5,017 162 Others 1,199 2,212 $ 20,761 $ 24,319
Other Noncurrent Liabilities [Table Text Block]	September 30, December 31, 2019 2018 Deferred rent $ 31 $ 1,100 Income tax payable 692 706 Intangible asset liability 12,516 7,961 Operating lease liability 9,841 — Others 757 1,144 $ 23,837 $ 10,911

Note 12 - Earnings Per Share (T

Note 12 - Earnings Per Share (Tables)	9 Months Ended
	Sep. 30, 2019
Notes Tables
Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table Text Block]	Three Months Ended Nine Months Ended September 30, September 30, 2019 2018 2019 2018 Common stock options 999,357 1,186,358 1,061,221 1,220,323 Unvested restricted stock units and market value stock units 2,781,820 2,945,422 2,787,656 2,886,675 Convertible debt 10,830,038 10,830,038 10,830,038 10,830,038 14,611,215 14,961,818 14,678,915 14,937,036

Note 13 - Stock-based Compens_2

Note 13 - Stock-based Compensation (Tables)	9 Months Ended
	Sep. 30, 2019
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, 2018 1,159,121 $ 12.94 2.62 $ 22,267 Exercised (189,445 ) $ 10.07 Outstanding at September 30, 2019 969,676 $ 13.50 2.01 $ 46,107 Vested and Exercisable at September 30, 2019 969,676 $ 13.50 2.01 $ 46,107
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, 2018 4,051,685 $ 34.68 Granted 1,857,453 $ 46.77 Vested (1,500,158 ) $ 32.73 Canceled (363,418 ) $ 37.68 Outstanding at September 30, 2019 4,045,562 $ 40.69 Expected to vest at September 30, 2019 3,956,449
Schedule of Share-based Payment Award, Employee Stock Purchase Plan, Valuation Assumptions [Table Text Block]	Three Months ended Nine Months Ended September 30, September 30, 2019 2018 2019 2018 Risk-free interest rate 1.93 % 2.24 % 2.26 % 2.01 % Expected life (in years) 0.50 0.50 0.49 0.50 Dividend yield — — — — Expected volatility 39 % 45 % 43 % 46 % Estimated fair value $ 16.50 $ 9.29 $ 13.35 $ 8.35
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Table Text Block]	Three Months Ended Nine Months Ended September 30, September 30, 2019 2018 2019 2018 Cost of goods sold $ 1,953 $ 636 $ 4,432 $ 1,810 Research and development 10,297 9,614 30,954 27,853 Sales and marketing 4,312 3,702 11,729 10,185 General and administrative 3,316 2,788 9,482 7,661 $ 19,878 $ 16,740 $ 56,597 $ 47,509

Note 14 - Fair Value Measurem_2

Note 14 - Fair Value Measurements (Tables)	9 Months Ended
	Sep. 30, 2019
Notes Tables
Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block]	September 30, 2019 Total Level 1 Level 2 Assets Cash equivalents: Money market funds $ 1,137 $ 63 $ 1,074 Commercial paper 62,662 — 62,662 Municipal bonds 2,149 — 2,149 Investment in marketable debt securities: U.S. Treasury securities 3,748 3,748 — Municipal bonds 6,100 — 6,100 Agency bonds 10,999 — 10,999 Corporate notes/bonds 179,289 — 179,289 Variable rate demand notes 12,900 — 12,900 Asset backed securities 15,215 — 15,215 Commercial paper 45,042 — 45,042 Certificate of deposit 350 350 — $ 339,591 $ 4,161 $ 335,430 December 31, 2018 Total Level 1 Level 2 Assets Cash equivalents: Money market funds $ 740 $ 38 $ 702 Commercial paper 96,759 — 96,759 Investment in marketable securities: Municipal bonds 6,733 — 6,733 Corporate notes/bonds 146,126 — 146,126 Variable rate demand notes 8,900 — 8,900 Asset-backed securities 32,923 — 32,923 Commercial paper 39,701 — 39,701 Certificate of deposit 956 956 — $ 332,838 $ 994 $ 331,844

Note 15 - Segment and Geograp_2

Note 15 - Segment and Geographic Information (Tables)	9 Months Ended
	Sep. 30, 2019
Notes Tables
Revenue from External Customers by Geographic Areas [Table Text Block]	Three Months Ended Nine Months Ended September 30, September 30, 2019 2018 2019 2018 China $ 34,503 $ 31,723 $ 110,769 $ 70,710 United States 32,936 25,746 73,902 72,710 Thailand 14,816 10,687 41,661 26,807 Other 11,976 9,853 36,407 37,732 $ 94,231 $ 78,009 $ 262,739 $ 207,959

Note 16 - Commitments and Con_2

Note 16 - Commitments and Contingencies (Tables)	9 Months Ended
	Sep. 30, 2019
Notes Tables
Unrecorded Unconditional Purchase Obligations Disclosure [Table Text Block]	2019 (remaining) $ 448 2020 14,472 2021 13,867 2022 9,952 2023 5 Thereafter 2 Total $ 38,746

Note 3 - Investments (Details T

Note 3 - Investments (Details Textual) $ in Thousands	3 Months Ended
	Sep. 30, 2019USD ($)	Mar. 31, 2018USD ($)
Debt Securities, Available-for-sale, Unrealized Loss Position, Number of Positions	24
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss, Total	$ 16
Equity Securities without Readily Determinable Fair Value, Upward Price Adjustment, Annual Amount	1,926	$ 3,066
Other Noncurrent Assets [Member]
Equity Securities without Readily Determinable Fair Value, Amount	21,792
Other Noncurrent Assets [Member] | Equity Securities, Fair Value Based on Observable Transaction [Member]
Equity Securities without Readily Determinable Fair Value, Amount	8,792
TAIWAN, PROVINCE OF CHINA
Equity Securities, FV-NI	1,359
Equity Securities, FV-NI, Unrealized Loss	634
UNITED STATES
Equity Securities, FV-NI	1,678
Equity Securities, FV-NI, Unrealized Gain	$ 178

Note 3 - Investments - Summary

Note 3 - Investments - Summary of Investments by Investment Category (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Available-for-sale securities, amortized cost	$ 272,818	$ 235,766
Available-for-sale securities, fair value	273,643	235,339
US Treasury Securities [Member]
Available-for-sale securities, amortized cost	3,745	0
Available-for-sale securities, fair value	3,748	0
US States and Political Subdivisions Debt Securities [Member]
Available-for-sale securities, amortized cost	6,041	6,751
Available-for-sale securities, fair value	6,100	6,733
US Government Agencies Debt Securities [Member]
Available-for-sale securities, amortized cost	10,999	0
Available-for-sale securities, fair value	10,999	0
Corporate Debt Securities [Member]
Available-for-sale securities, amortized cost	178,582	146,466
Available-for-sale securities, fair value	179,289	146,126
Variable Rate Demand Note [Member]
Available-for-sale securities, amortized cost	12,900	8,900
Available-for-sale securities, fair value	12,900	8,900
Asset-backed Securities [Member]
Available-for-sale securities, amortized cost	15,167	32,986
Available-for-sale securities, fair value	15,215	32,923
Commercial Paper [Member]
Available-for-sale securities, amortized cost	45,034	39,707
Available-for-sale securities, fair value	45,042	39,701
Certificates of Deposit [Member]
Available-for-sale securities, amortized cost	350	956
Available-for-sale securities, fair value	$ 350	$ 956

Note 3 - Investments - Contract

Note 3 - Investments - Contractual Maturities of Available-for-sale Securities (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Due in one year or less, cost	$ 161,970
Due in one year or less, fair value	162,238
Due between one and five years, cost	95,130
Due between one and five years, fair value	95,689
Due after five years, cost	15,718
Due after five years, fair value	15,716
Available-for-sale securities, cost	272,818	$ 235,766
Available-for-sale securities, fair value	$ 273,643	$ 235,339

Note 4 - Inventories - Schedule

Note 4 - Inventories - Schedule of Inventory (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Raw materials	$ 20,414	$ 12,435
Work in process	21,904	13,602
Finished goods	14,397	7,015
	$ 56,715	$ 33,052

Note 5 - Property and Equipme_3

Note 5 - Property and Equipment, Net (Details Textual) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018	Dec. 31, 2018
Depreciation, Total	$ 5,668	$ 5,134	$ 16,726	$ 14,931
Capitalized Computer Software, Gross	7,128		7,128		$ 6,879
Capitalized Computer Software, Amortization	$ 94	$ 126	280	$ 471
Capital Expenditures Incurred but Not yet Paid			$ 11,525		$ 2,580

Note 5 - Property and Equipme_4

Note 5 - Property and Equipment, Net - Property and Equipment Components (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Property and equipment, gross	$ 186,629	$ 161,073
Less accumulated depreciation and amortization	(106,757)	(90,333)
Total property and equipment	79,872	70,740
Equipment [Member]
Property and equipment, gross	142,905	121,716
Office, Software, and Computer Equipment [Member]
Property and equipment, gross	34,231	30,190
Furniture and Fixtures [Member]
Property and equipment, gross	1,585	1,558
Leasehold Improvements [Member]
Property and equipment, gross	$ 7,908	$ 7,609

Note 6 - Intangible Assets - Id

Note 6 - Intangible Assets - Identifiable Intangible Assets (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Intangible assets, gross	$ 336,172	$ 322,635
Intangible assets, accumulated amortization	194,007	142,188
Intangible assets, net	142,165	180,447
Developed Technology Rights [Member]
Intangible assets, gross	186,800	186,800
Intangible assets, accumulated amortization	115,550	86,378
Intangible assets, net	71,250	100,422
Customer Relationships [Member]
Intangible assets, gross	70,540	70,540
Intangible assets, accumulated amortization	28,977	21,681
Intangible assets, net	41,563	48,859
Trade Names [Member]
Intangible assets, gross	2,310	2,310
Intangible assets, accumulated amortization	1,696	1,350
Intangible assets, net	614	960
Patents [Member]
Intangible assets, gross	1,579	1,579
Intangible assets, accumulated amortization	980	881
Intangible assets, net	599	698
Computer Software, Intangible Asset [Member]
Intangible assets, gross	74,943	61,406
Intangible assets, accumulated amortization	46,804	31,898
Intangible assets, net	$ 28,139	$ 29,508

Note 6 - Intangible Assets - Am

Note 6 - Intangible Assets - Amortization (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Amortization of intangible assets	$ 18,109	$ 17,364	$ 53,635	$ 45,013
Cost of Sales [Member]
Amortization of intangible assets	9,724	9,723	29,172	23,121
Research and Development Expense [Member]
Amortization of intangible assets	5,806	5,058	16,722	14,138
Selling and Marketing Expense [Member]
Amortization of intangible assets	2,432	2,432	7,296	7,296
General and Administrative Expense [Member]
Amortization of intangible assets	$ 147	$ 151	$ 445	$ 458

Note 6 - Intangible Assets - Ex

Note 6 - Intangible Assets - Expected Amortization Expense (Details) $ in Thousands	Sep. 30, 2019USD ($)
2019 (remaining)	$ 18,988
2020	42,743
2021	37,892
2022	29,268
2023	12,435
Thereafter	839
Total amortization expense	$ 142,165

Note 6 - Intangible Assets - We

Note 6 - Intangible Assets - Weighted-average Amortization Periods Remaining (Details)	9 Months Ended
	Sep. 30, 2019
Developed Technology Rights [Member]
Finite-lived intangible assets, remaining amortization period (Year)	3 years 2 months 12 days
Customer Relationships [Member]
Finite-lived intangible assets, remaining amortization period (Year)	4 years 3 months 18 days
Trade Names [Member]
Finite-lived intangible assets, remaining amortization period (Year)	2 years 2 months 12 days
Patents [Member]
Finite-lived intangible assets, remaining amortization period (Year)	7 years 7 months 6 days
Computer Software, Intangible Asset [Member]
Finite-lived intangible assets, remaining amortization period (Year)	2 years 2 months 12 days

Note 7 - Leases (Details Textua

Note 7 - Leases (Details Textual) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018	Jan. 01, 2019	Dec. 31, 2018
Operating Lease, Right-of-Use Asset		$ 10,823			$ 0
Operating Lease, Liability, Total		$ 12,678
Lessee, Operating Lease, Renewal Term		5 years
Lessee, Operating Lease, Lease Not yet Commenced		$ 232
Lessee, Operating Lease, Lease Not yet Commenced, Term of Contract		5 years
Operating Lease, Expense	$ 1,142		$ 4,590
Minimum [Member]
Lessee, Operating Lease, Remaining Term of Contract		1 year
Maximum [Member]
Lessee, Operating Lease, Remaining Term of Contract		7 years
Accounting Standards Update 2016-02 [Member]
Cumulative Effect of New Accounting Principle in Period of Adoption				$ 0
Operating Lease, Right-of-Use Asset				10,670
Operating Lease, Liability, Total				$ 10,670

Note 7 - Leases - Lease Cost (D

Note 7 - Leases - Lease Cost (Details) $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2019USD ($)	Sep. 30, 2019USD ($)
Operating lease cost	$ 1,170	$ 3,268
Cash paid for leases	1,028	3,219
Right of use assets obtained in exchange for lease obligations	$ 2,927	$ 3,151
Weighted average remaining lease term (years) (Year)	4 years 4 months 28 days	4 years 4 months 28 days
Weighted average discount rate	3.30%	3.30%

Note 7 - Leases - Future Minimu

Note 7 - Leases - Future Minimum Lease Payments Under Non-cancelable Operating Leases (Details) $ in Thousands	Sep. 30, 2019USD ($)
2019 (remaining)	$ 1,345
2020	3,489
2021	2,547
2022	2,573
2023	2,506
Thereafter	2,365
Total future minimum lease payments	14,825
Less: Imputed interest	1,172
Lease incentive	975
Present value of lease obligations	$ 12,678

Note 7 - Leases - Future Mini_2

Note 7 - Leases - Future Minimum Lease Payments Under Non-cancelable Leases and Service Agreements ASC 840 (Details) $ in Thousands	Dec. 31, 2018USD ($)
2019	$ 4,588
2020	2,252
2021	1,883
2022	1,722
2023	1,615
2024 and thereafter	1,698
Total	$ 13,758

Note 8 - Product Warranty Obl_2

Note 8 - Product Warranty Obligation (Details Textual) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018	Dec. 31, 2018
Standard and Extended Product Warranty Accrual, Ending Balance	$ 110		$ 110		$ 110
Standard and Extended Product Warranty Accrual, Period Increase (Decrease), Total	$ 0	$ 0	$ 0	$ 0

Note 9 - Convertible Debt (Deta

Note 9 - Convertible Debt (Details Textual) - Convertible Debt [Member] $ / shares in Units, $ in Thousands	1 Months Ended		3 Months Ended		9 Months Ended
	Sep. 30, 2016USD ($)$ / shares$ / item	Dec. 31, 2015USD ($)$ / shares$ / item	Sep. 30, 2019USD ($)	Sep. 30, 2018USD ($)	Sep. 30, 2019USD ($)	Sep. 30, 2018USD ($)
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			$ 3,877	$ 3,652	$ 11,340	$ 10,685
Interest Expense, Debt, Excluding Amortization			650	650	1,936	1,936
Amortization of Debt Discount (Premium)			2,960	2,754	8,627	8,026
Amortization of Debt Issuance Costs			267	248	777	723
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			4,525	4,253	13,219	12,425
Interest Expense, Debt, Excluding Amortization			541	542	1,608	1,608
Amortization of Debt Discount (Premium)			3,682	3,430	10,732	9,998
Amortization of Debt Issuance Costs			$ 302	$ 281	$ 879	$ 819
Convertible Debt in Default, Percent Holders to Declare Due and Payable	100.00%
Derivative, Cap Price | $ / item	73.03

Note 9 - Convertible Debt - Car

Note 9 - Convertible Debt - Carry Amount of Long-term Debt (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Principal	$ 517,500	$ 517,500
Unamortized debt discount	(44,863)	(64,222)
Unamortized debt issuance costs	(3,797)	(5,453)
Net carrying amount of long-term debt	468,840	447,825
Less current portion of long-term debt	0	0
Long-term debt, non-current portion	$ 468,840	$ 447,825

Note 10 - Other Liabilities - O

Note 10 - Other Liabilities - Other Current Liabilities (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Intangible asset liability	$ 11,708	$ 21,945
Operating lease liability	2,837	0
Payable to end customer	5,017	162
Others	1,199	2,212
	$ 20,761	$ 24,319

Note 10 - Other Liabilities -_2

Note 10 - Other Liabilities - Other Long-term Liabilities (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Deferred rent	$ 31	$ 1,100
Income tax payable	692	706
Intangible asset liability	12,516	7,961
Operating lease liability	9,841	0
Others	757	1,144
	$ 23,837	$ 10,911

Note 11 - Income Taxes (Details

Note 11 - Income Taxes (Details Textual) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Income Tax Expense (Benefit), Total	$ 619	$ (203)	$ 1,252	$ (8,406)
Effective Income Tax Rate Reconciliation, Percent, Total	(4.00%)	0.90%	(2.10%)	10.20%
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent	21.00%	21.00%
Unrecognized Tax Benefits, Increase Resulting from Current Period Tax Positions	$ 853		$ 5,234

Note 12 - Earnings Per Share -

Note 12 - Earnings Per Share - Securities Not Included in Computation of Earnings Per Share (Details) - shares	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Anti-dilutive securities (in shares)	14,611,215	14,961,818	14,678,915	14,937,036
Share-based Payment Arrangement, Option [Member]
Anti-dilutive securities (in shares)	999,357	1,186,358	1,061,221	1,220,323
Restricted Stock and Market Value Stock Units [Member]
Anti-dilutive securities (in shares)	2,781,820	2,945,422	2,787,656	2,886,675
Convertible Debt Securities [Member]
Anti-dilutive securities (in shares)	10,830,038	10,830,038	10,830,038	10,830,038

Note 13 - Stock-based Compens_3

Note 13 - Stock-based Compensation (Details Textual) - USD ($) $ in Thousands	1 Months Ended	3 Months Ended		9 Months Ended
	Dec. 31, 2011	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018	Dec. 31, 2018
Common Stock, Capital Shares Reserved for Future Issuance		4,997,941		4,997,941
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				$ 7,953	$ 3,887
Proceeds from Stock Options Exercised				$ 1,907	$ 522
Stock Issued During Period, Shares, Employee Stock Purchase Plans				208,721	283,493
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount, Total		$ 138,157		$ 138,157
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition				2 years 6 months 21 days
Employee Stock Purchase Plan [Member]
Maximum Percentage of Aggregate Cash Compensation for Purchase of Stock Using Payroll Deduction	15.00%
Purchase Price PerShare as Percentage of Market Value	85.00%
Percentage of Combined Voting Power or Value of All Classes of Stock Not Eligible to Participate	5.00%
Fair Value of Common Stock in Calendar Year per Employee Not Eligible to Participate	$ 25
Maximum Aggregate Number of Shares of Common Stock Available for Purchase under Employee Stock Purchase Plan				2,750,000
Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period				4 years
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period				1,500,158
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number, Ending Balance		4,045,562		4,045,562		4,051,685
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				55,759
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number, Ending Balance		72,053		72,053

Note 13 - Stock-based Compens_4

Note 13 - Stock-based Compensation - Options Outstanding (Details) $ / shares in Units, $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2019USD ($)$ / sharesshares	Dec. 31, 2018USD ($)$ / sharesshares
Number of shares outstanding (in shares) | shares	1,159,121
Number of shares outstanding, weighted-average exercise price (in dollars per share) | $ / shares	$ 12.94
Number of shares outstanding, weighted-average remaining contractual life (Year)	2 years 3 days	2 years 7 months 13 days
Number of shares outstanding, aggregate intrinsic value | $	$ 46,107	$ 22,267
Number of shares exercised (in shares) | shares	(189,445)
Number of shares exercised, weighted-average exercise price (in dollars per share) | $ / shares	$ 10.07
Number of shares outstanding (in shares) | shares	969,676	1,159,121
Number of shares outstanding, weighted-average exercise price (in dollars per share) | $ / shares	$ 13.50	$ 12.94
Vested and expected to vest in the future (in shares) | shares	969,676
Number of shares vested and expected to vest in the future, weighted-average exercise price (in dollars per share) | $ / shares	$ 13.50
Number of shares vested and expected to vest in the future, weighted-average remaining contractual life (Year)	2 years 3 days
Number of shares vested and expected to vest in the future, aggregate intrinsic value | $	$ 46,107

Note 13 - Stock-based Compens_5

Note 13 - Stock-based Compensation - Outstanding Restricted Stock Units (Details) - Restricted Stock Units (RSUs) [Member]	9 Months Ended
	Sep. 30, 2019$ / sharesshares
Outstanding (in shares)	4,051,685
Outstanding, weighted-average grant date fair value (in dollars per share) | $ / shares	$ 34.68
Granted (in shares)	1,857,453
Granted, weighted-average grant date fair value (in dollars per share) | $ / shares	$ 46.77
Vested (in shares)	(1,500,158)
Vested, weighted-average grant date fair value (in dollars per share) | $ / shares	$ 32.73
Canceled (in shares)	(363,418)
Canceled, weighted-average grant date fair value (in dollars per share) | $ / shares	$ 37.68
Outstanding (in shares)	4,045,562
Outstanding, weighted-average grant date fair value (in dollars per share) | $ / shares	$ 40.69
Expected to vest (in shares)	3,956,449

Note 13 - Stock-based Compens_6

Note 13 - Stock-based Compensation - Fair Value of Employee Stock Purchase Plan (Details) - Employee Stock Purchase Plan [Member] - $ / shares	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Risk-free interest rate	1.93%	2.24%	2.26%	2.01%
Expected life (Year)	6 months	6 months	5 months 26 days	6 months
Dividend yield	0.00%	0.00%	0.00%	0.00%
Expected volatility	39.00%	45.00%	43.00%	46.00%
Estimated fair value (in dollars per share)	$ 16.50	$ 9.29	$ 13.35	$ 8.35

Note 13 - Stock-based Compens_7

Note 13 - Stock-based Compensation - Stock-based Compensation Expense (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Stock-based compensation expense	$ 19,878	$ 16,740	$ 56,597	$ 47,509
Cost of Sales [Member]
Stock-based compensation expense	1,953	636	4,432	1,810
Research and Development Expense [Member]
Stock-based compensation expense	10,297	9,614	30,954	27,853
Selling and Marketing Expense [Member]
Stock-based compensation expense	4,312	3,702	11,729	10,185
General and Administrative Expense [Member]
Stock-based compensation expense	$ 3,316	$ 2,788	$ 9,482	$ 7,661

Note 14 - Fair Value Measurem_3

Note 14 - Fair Value Measurements (Details Textual) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Convertible Debt, Fair Value Disclosures	$ 718,151	$ 512,428

Note 14 - Fair Value Measurem_4

Note 14 - Fair Value Measurements - Assets and Liabilities Carried at Fair Value on Recurring Basis (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Total fair value of assets	$ 339,591	$ 332,838
Fair Value, Inputs, Level 1 [Member]
Total fair value of assets	4,161	994
Fair Value, Inputs, Level 2 [Member]
Total fair value of assets	335,430	331,844
Money Market Funds [Member]
Cash equivalents	1,137	740
Money Market Funds [Member] | Fair Value, Inputs, Level 1 [Member]
Cash equivalents	63	38
Money Market Funds [Member] | Fair Value, Inputs, Level 2 [Member]
Cash equivalents	1,074	702
Commercial Paper [Member]
Cash equivalents	62,662	96,759
Investment in marketable securities	45,042	39,701
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	62,662	96,759
Investment in marketable securities	45,042	39,701
Municipal Bonds [Member]
Cash equivalents	2,149
Investment in marketable securities	6,100	6,733
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	2,149
Investment in marketable securities	6,100	6,733
US Treasury Securities [Member]
Investment in marketable securities	3,748
US Treasury Securities [Member] | Fair Value, Inputs, Level 1 [Member]
Investment in marketable securities	3,748
US Treasury Securities [Member] | Fair Value, Inputs, Level 2 [Member]
Investment in marketable securities	0
Corporate Debt Securities [Member]
Investment in marketable securities	179,289	146,126
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	179,289	146,126
Variable Rate Demand Note [Member]
Investment in marketable securities	12,900	8,900
Variable Rate Demand Note [Member] | Fair Value, Inputs, Level 1 [Member]
Investment in marketable securities	0	0
Variable Rate Demand Note [Member] | Fair Value, Inputs, Level 2 [Member]
Investment in marketable securities	12,900	8,900
US Government Agencies Debt Securities [Member]
Investment in marketable securities	10,999
US Government Agencies Debt Securities [Member] | Fair Value, Inputs, Level 1 [Member]
Investment in marketable securities	0
US Government Agencies Debt Securities [Member] | Fair Value, Inputs, Level 2 [Member]
Investment in marketable securities	10,999
Asset-backed Securities [Member]
Investment in marketable securities	15,215	32,923
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	15,215	32,923
Certificates of Deposit [Member]
Investment in marketable securities	350	956
Certificates of Deposit [Member] | Fair Value, Inputs, Level 1 [Member]
Investment in marketable securities	350	956
Certificates of Deposit [Member] | Fair Value, Inputs, Level 2 [Member]
Investment in marketable securities	$ 0	$ 0

Note 15 - Segment and Geograp_3

Note 15 - Segment and Geographic Information (Details Textual) $ in Thousands	9 Months Ended
	Sep. 30, 2019USD ($)	Dec. 31, 2018USD ($)
Number of Operating Segments	1
Non-US [Member]
Long-Lived Assets	$ 35,491	$ 32,631
TAIWAN, PROVINCE OF CHINA
Long-Lived Assets	$ 29,539	$ 28,428

Note 15 - Segment and Geograp_4

Note 15 - Segment and Geographic Information - Revenue by Geographic Region (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Revenue	$ 94,231	$ 78,009	$ 262,739	$ 207,959
CHINA
Revenue	34,503	31,723	110,769	70,710
UNITED STATES
Revenue	32,936	25,746	73,902	72,710
THAILAND
Revenue	14,816	10,687	41,661	26,807
Other Country [Member]
Revenue	$ 11,976	$ 9,853	$ 36,407	$ 37,732

Note 16 - Commitments and Con_3

Note 16 - Commitments and Contingencies (Details Textual) $ in Thousands	Sep. 30, 2019USD ($)
Value of Open Purchase Orders	$ 15,180
Indemnification Agreement [Member]
Loss Contingency Accrual, Ending Balance	$ 0

Note 16 - Commitments and Con_4

Note 16 - Commitments and Contingencies - Future Minimum Payments Under Non-cancelable Service Agreements (Details) $ in Thousands	Sep. 30, 2019USD ($)
2019 (remaining)	$ 448
2020	14,472
2021	13,867
2022	9,952
2023	5
Thereafter	2
Total	$ 38,746