INPHI 10-Q 9 Aug 16 2016 Q2 Quarterly report Financial data

Document And Entity Information

Document And Entity Information - shares	6 Months Ended
	Jun. 30, 2016	Aug. 05, 2016
Document Information [Line Items]
Entity Registrant Name	INPHI CORP
Entity Central Index Key	1,160,958
Trading Symbol	iphi
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Entity Current Reporting Status	Yes
Entity Voluntary Filers	No
Entity Well-known Seasoned Issuer	Yes
Entity Common Stock, Shares Outstanding (in shares)		40,684,054
Document Type	10-Q
Document Period End Date	Jun. 30, 2016
Document Fiscal Year Focus	2,016
Document Fiscal Period Focus	Q2
Amendment Flag	false

Unaudited Condensed Consolidate

Unaudited Condensed Consolidated Balance Sheets - USD ($)	Jun. 30, 2016	Dec. 31, 2015
Current assets:
Cash and cash equivalents	$ 146,914,000	$ 283,044,000
Investments in marketable securities	180,900,000	43,616,000
Accounts receivable, net	39,035,000	30,418,000
Inventories	11,813,000	12,364,000
Income tax receivable	246,000	327,000
Prepaid expenses and other current assets	5,862,000	3,574,000
Current assets held for sale	10,468,000	5,532,000
Total current assets	395,238,000	378,875,000
Property and equipment, net	35,560,000	33,624,000
Goodwill	8,440,000	8,440,000
Identifiable intangible assets, net	59,933,000	66,289,000
Deferred tax charge	2,263,000	2,322,000
Other assets, net	14,280,000	12,126,000
Noncurrent assets held for sale		3,370,000
Total assets	515,714,000	505,046,000
Current liabilities:
Accounts payable	7,263,000	5,851,000
Deferred revenue	3,988,000	4,654,000
Accrued employee expenses	10,002,000	13,719,000
Other accrued expenses	4,408,000	3,246,000
Other current liabilities	986,000	1,018,000
Current liabilities held for sale	5,193,000	5,490,000
Total current liabilities	31,840,000	33,978,000
Convertible debt	176,728,000	171,701,000
Other long-term liabilities	2,937,000	8,697,000
Total liabilities	211,505,000	214,376,000
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; 40,612,952 and 39,389,280 issued and outstanding at June 30, 2016 and December 31, 2015, respectively	41,000	39,000
Additional paid-in capital	399,833,000	392,616,000
Accumulated deficit	(96,729,000)	(102,741,000)
Accumulated other comprehensive income	1,064,000	756,000
Total stockholders’ equity	304,209,000	290,670,000
Total liabilities and stockholders’ equity	$ 515,714,000	$ 505,046,000

Unaudited Condensed Consolidat3

Unaudited Condensed Consolidated Balance Sheets (Parentheticals) - $ / shares	Jun. 30, 2016	Dec. 31, 2015
Preferred stock, par value (in dollars per share)	$ 0.001	$ 0.001
Preferred stock, shares authorized (in shares)	10,000,000	10,000,000
Preferred stock, shares issued (in shares)	0	0
Common stock, par value (in dollars per share)	$ 0.001	$ 0.001
Common stock, shares authorized (in shares)	500,000,000	500,000,000
Common stock, shares issued (in shares)	40,612,952	39,389,280
Common stock, shares outstanding (in shares)	40,612,952	39,389,280

Unaudited Condensed Consolidat4

Unaudited Condensed Consolidated Statements of Income - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Revenue	$ 60,524	$ 49,513	$ 114,615	$ 92,459
Cost of revenue	19,275	17,527	36,396	39,692
Gross profit	41,249	31,986	78,219	52,767
Operating expenses:
Research and development	27,321	22,687	51,308	40,776
Sales and marketing	5,809	5,184	11,594	10,802
General and administrative	4,120	5,433	9,077	11,245
Total operating expenses	37,250	33,304	71,979	62,823
Income (loss) from operations	3,999	(1,318)	6,240	(10,056)
Interest expense	(3,171)		(6,303)
Other income (expense)	418	(95)	887	73
Income (loss) before income taxes from continuing operations	1,246	(1,413)	824	(9,983)
Provision (benefit) for income taxes	303	(869)	(29)	1,869
Net income (loss) from continuing operations	943	(544)	853	(11,852)
Income (loss) from discontinued operations	(566)	(607)	(85)	2,649
Provision (benefit) for income taxes	(154)	(1,151)	17	505
Net income (loss) from discontinued operations	(412)	544	(102)	2,144
Net income (loss)	$ 531		$ 751	$ (9,708)
Basic
Net income (loss) from continuing operations (in dollars per share)	$ 0.02	$ (0.01)	$ 0.02	$ (0.31)
Net income (loss) from discontinued operations (in dollars per share)	(0.01)	0.01		0.05
Basic earnings per share (in dollars per share)	0.01		0.02	(0.26)
Diluted
Net income (loss) from continuing operations (in dollars per share)	0.02	(0.01)	0.02	(0.31)
Net income (loss) from discontinued operations (in dollars per share)	(0.01)	0.01		0.05
Diluted earnings per share (in dollars per share)	$ 0.01		$ 0.02	$ (0.26)
Weighted-average shares used in computing earnings per share:
Basic (in shares)	40,412,319	38,431,307	40,085,260	38,065,942
Diluted (in shares)	43,838,488	38,431,307	43,680,317	38,065,942

Unaudited Condensed Consolidat5

Unaudited Condensed Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Net income (loss)	$ 531		$ 751	$ (9,708)
Other comprehensive income (loss):
Change in unrealized gain, net of tax	87	(74)	313	(27)
Realized gain reclassified into earnings, net of tax	(5)		(5)	(9)
Comprehensive income (loss)	$ 613	$ (74)	$ 1,059	$ (9,744)

Unaduited Condensed Consolidate

Unaduited Condensed Consolidated Statements of Cash Flows - USD ($)	6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015
Cash flows from operating activities
Net income (loss)	$ 751,000	$ (9,708,000)
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation and amortization	14,952,000	12,919,000
Stock-based compensation	14,732,000	13,622,000
Impairment of in-process research and development		1,750,000
Deferred income taxes and deferred tax charge	59,000	352,000
Accretion of convertible debt and amortization of debt issuance costs	5,027,000
Amortization of premium on marketable securities	675,000	277,000
Loss on disposal of property and equipment		438,000
Other noncash items	(6,000)	(7,000)
Changes in assets and liabilities:
Accounts receivable	(8,617,000)	1,423,000
Inventories	348,000	2,266,000
Prepaid expenses and other assets	(991,000)	1,657,000
Income tax payable/receivable	(40,000)	1,280,000
Accounts payable	1,512,000	952,000
Accrued expenses	(2,512,000)	331,000
Deferred revenue	(780,000)	(71,000)
Other liabilities	(410,000)	(913,000)
Net cash provided by operating activities	24,700,000	26,568,000
Cash flows from investing activities
Purchases of property and equipment	(11,755,000)	(6,638,000)
Proceeds from sale of property and equipment		75,000
Purchases of marketable securities	(171,704,000)	(7,947,000)
Sales of marketable securities	1,785,000	3,226,000
Maturities of marketable securities	31,715,000	5,580,000
Purchase of cost- method investment in private company	(2,000,000)
Net cash used in investing activities	(151,959,000)	(5,704,000)
Cash flows from financing activities
Proceeds from exercise of stock options	2,607,000	4,469,000
Proceeds from employee stock purchase plan	3,150,000	1,977,000
Convertible bonds issuance costs paid	(353,000)
Minimum tax withholding paid on behalf of employees for restricted stock units	(13,550,000)	(8,035,000)
Long-term loan	(725,000)
Net cash used in financing activities	(8,871,000)	(1,589,000)
Net increase (decrease) in cash and cash equivalents	(136,130,000)	19,275,000
Cash and cash equivalents at beginning of period	283,044,000	30,366,000
Cash and cash equivalents at end of period	146,914,000	49,641,000
Supplemental Cash Flow Information
Income taxes paid	183,000	631,000
Interest paid	$ 1,243,000

Note 1 - Organization and Basis

Note 1 - Organization and Basis of Presentation	6 Months Ended
	Jun. 30, 2016
Notes to Financial Statements
Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block]	1. Organization and Basis of Presentation Inphi Corporation (the “Company”), a Delaware corporation, was incorporated in November 2000. The Company is a fabless provider of high-speed analog and mixed signal semiconductor solutions for the communications, data center and computing markets. The Company’s semiconductor solutions are designed to address bandwidth bottlenecks in networks, maximize throughput and minimize latency in computing environments and enable the rollout of next generation communications, data center and computing infrastructures. In addition, the semiconductor solutions provide a vital high-speed interface between analog signals and digital information in high-performance systems such as telecommunications transport systems, enterprise networking equipment, data center and enterprise servers, storage platforms, test and measurement equipment and military systems. 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 with the instructions to Securities and Exchange Commission (“SEC”), Form 10-Q and Article 10 of SEC Regulation S-X. They do not include all of the information and footnotes required by GAAP for complete financial statements. Therefore, these financial statements should be read in conjunction with the Company’s audited consolidated financial statements and notes thereto for the year ended December 31, 2015, included in the Company’s Annual Report on Form 10-K filed with the SEC on February 29, 2016. The interim condensed consolidated financial statements included herein are unaudited; however, they contain all normal recurring accruals and adjustments that, in the opinion of management, are necessary to state fairly the Company’s consolidated financial position at June 30, 2016, and its consolidated results of operations for the three and six months ended June 30, 2016 and 2015 and cash flows for the six months ended June 30, 2016 and 2015. The results of operations for the three and six months ended June 30, 2016 are not necessarily indicative of the results to be expected for future quarters or the full year. On June 29, 2016, the Company signed a definitive agreement to sell the memory product business to Rambus Inc. for $90,000 in cash inclusive of $11,250 which will be placed into escrow for a period of twelve months following the closing as security for the Company’s indemnification obligations pursuant to the agreement. The sale was completed on August 4, 2016. The Company's consolidated financial statements and accompanying notes for current and prior periods have been restated to present the results of operations of the memory product business as discontinued operations. In addition, the assets and liabilities to be disposed of have been treated and classified as held for sale. For more information on discontinued operations, see Note 3.

Note 2 - Recent Accounting Pron

Note 2 - Recent Accounting Pronouncements	6 Months Ended
	Jun. 30, 2016
Notes to Financial Statements
New Accounting Pronouncements and Changes in Accounting Principles [Text Block]	2. Recent Accounting Pronouncements In May 2014, the Financial Accounting Standards Board (FASB) issued guidance on “Revenue from Contracts with Customers.” The new revenue recognition guidance provides a five-step analysis of transactions to determine when and how revenue is recognized. The guidance requires an entity to recognize the amount of revenue to which it expects to be entitled for the transfer of promised goods or services to customers. The new guidance was initially effective for the Company on January 1, 2017. The new guidance permits the use of either the retrospective or cumulative effect transition method. The Company is evaluating the effect that the new revenue recognition guidance will have on the consolidated financial statements and related disclosures. The Company has not yet selected a transition method nor determined the effect of the standard on the ongoing financial reporting. In July 2015, the FASB voted to defer the effective date of the new revenue recognition standard by one year. The guidance may be adopted as early as January 1, 2017, the effective date of the original guidance. In July 2015, the FASB issued guidance applying to inventory measured using any other method other than last-in, last-out method. Under this guidance inventory is measured at the lower of cost and net realizable value. The net realizable value is the estimated selling price in the ordinary course of business, less reasonably predictable costs of completion, disposal, and transportation. The guidance is applied prospectively and is effective for the Company beginning January 1, 2017. Early adoption is permitted. The adoption of this standard is not expected to have a material impact on the Company’s consolidated financial statements and related disclosures. In September 2015, the FASB issued guidance that requires an acquirer in a business combination to recognize adjustments to provisional amounts that are identified during the measurement period in the reporting period in which the adjustment amounts are determined. The guidance also requires disclosure of the effect on earnings of changes in depreciation, amortization or other income effects, if any, as a result of the adjustment to the provisional amounts, calculated as if the accounting had been completed at the acquisition date. This guidance is effective for the Company beginning January 1, 2016. The adoption of this standard did not have a material impact on the Company’s consolidated financial statements and related disclosures. In January 2016, the FASB issued guidance that requires equity investments (except those accounted for under the equity method of accounting or those that result in consolidation of the investee) to be measured at fair value with changes in fair value recognized in net income. However, an entity may choose to measure equity investments that do not have readily determinable fair values at cost minus impairment, if any, plus or minus changes resulting from observable price changes in orderly transactions for the identical or a similar investment of the same issuer. The guidance simplifies the impairment assessment of equity investments without readily determinable fair values by requiring a qualitative assessment to identify impairment. When a qualitative assessment indicates that impairment exists, an entity is required to measure the investment at fair value. The guidance eliminates the requirement for public business entities to disclose the method(s) and significant assumptions used to estimate the fair value that is required to be disclosed for financial instruments measured at amortized cost on the balance sheet, and requires public business entities to use the exit price notion when measuring the fair value of financial instruments for disclosure purposes. The guidance also requires an entity to present separately in other comprehensive income the portion of the total change in the fair value of a liability resulting from a change in the instrument-specific credit risk when the entity has elected to measure the liability at fair value in accordance with the fair value option for financial instruments. Separate presentation of financial assets and financial liabilities by measurement category and form of financial asset (that is, securities or loans and receivables) on the balance sheet or the accompanying notes to the financial statements is required under this guidance. The guidance further clarifies that an entity should evaluate the need for a valuation allowance on a deferred tax asset related to available-for-sale securities in combination with the entity’s other deferred tax assets. The guidance is applied by means of a cumulative-effect adjustment to the balance sheet as of the beginning of the fiscal year of adoption and is effective for the Company in its first quarter of fiscal 2018. Early adoption is permitted only if certain criteria is met. The Company is currently evaluating the impact of this new guidance on its consolidated financial statements and related disclosures. In February 2016, the FASB issued guidance that requires companies that lease assets (lessees) to recognize on the balance sheet the assets and liabilities for the rights and obligations created by the leases with lease terms of more than 12 months. This guidance is effective for the Company beginning January 1, 2019. Early adoption is permitted. The Company is currently evaluating the impact of this new guidance on its consolidated financial statements and related disclosures. In March 2016, the FASB issued a guidance that eliminate the requirement that when an investment qualifies for use of the equity method as a result of an increase in the level of ownership interest or degree of influence, an investor must adjust the investment, results of operations, and retained earnings retroactively on a step-by-step basis as if the equity method had been in effect during all previous periods that the investment had been held. The guidance require that the equity method investor add the cost of acquiring the additional interest in the investee to the current basis of the investor’s previously held interest and adopt the equity method of accounting as of the date the investment becomes qualified for equity method accounting. Therefore, upon qualifying for the equity method of accounting, no retroactive adjustment of the investment is required. The guidance also requires that an entity that has an available-for-sale equity security that becomes qualified for the equity method of accounting recognize through earnings the unrealized holding gain or loss in accumulated other comprehensive income at the date the investment becomes qualified for use of the equity method. The guidance is effective for the Company beginning after January 1, 2017. The Company is currently evaluating the impact of this new guidance on its consolidated financial statements and related disclosures. In March 2016, the FASB issued a guidance in the assessment whether an entity is a principal or an agent in the new revenue standard (gross versus net revenue presentation). The guidance has the same effective date and transition requirements as the new revenue standard, which is effective for calendar year ¬end public companies in 2018 with early adoption permitted in 2017. In March 2016, the FASB issued a guidance that will change certain aspects of accounting for share-based payments to employees. The new guidance requires all income tax effects of awards to be recognized in the income statement when the awards vest or are settled. It also allows an employer to repurchase more of an employee’s shares than the minimum for tax withholding purposes without triggering liability accounting and to make a policy election to account for forfeitures as they occur. The new guidance allows entities to estimate forfeiture or recognize forfeitures when they occur. It also requires presentation of excess tax benefits as an operating activity and cash paid by employer to taxing authorities on the employees’ behalf for withheld shares as financing activity on the statement of cash flows. The Company early adopted this standard at the beginning of 2016 and the effect of adoption is discussed in Note 13 of the condensed consolidated financial statements. In April 2016, the FASB issued a guidance which amends the revenue guidance on identifying performance obligations and accounting for licenses of intellectual property. The guidance changed the previous proposals on renewals of right-of-use licenses and contractual restrictions. The guidance has the same effective date and transition requirements as the new revenue standard, which is effective for calendar year ¬end public companies in 2018 with early adoption permitted in 2017.

Note 3 - Discontinued Operation

Note 3 - Discontinued Operations	6 Months Ended
	Jun. 30, 2016
Notes to Financial Statements
Disposal Groups, Including Discontinued Operations, Disclosure [Text Block]	3. Discontinued Operations In June 2016, the Company announced sale of its memory product business (the “Business”) to Rambus Inc. for $90,000 in cash, $11,250 of which will be placed into escrow for a period of the twelve months following the closing as security for the Company’s indemnification obligations pursuant to the Asset Purchase Agreement dated June 29, 2016 . The sale was completed on August 4, 2016. The divestiture of the Business was part of a strategic plan to focus on and increase investments in the Company’s communication business. The assets and liabilities of the Business have been classified as held for sale and the results of operations are shown in net income (loss) from discontinued operations. The Company’s condensed consolidated financial statements and the accompanying notes for current and prior periods have been restated. The carrying amounts of the major classes of assets and liabilities that are classified as held for sale on the condensed consolidated balance sheets as of June 30, 2016 and December 31, 2015 were as follows: June 30, 201 6 December 31, 2015 Assets Current assets Inventories $ 5,667 $ 5,464 Prepaid expenses and other current assets 180 68 Property and equipment, net 3,907 — Goodwill 714 — Total current assets held for sale 10,468 5,532 Noncurrent assets Property and equipment, net — 2,656 Goodwill — 714 Assets held for sale $ 10,468 $ 8,902 Liabilities Accounts payable $ 2,168 $ 2,538 Deferred revenue 1,899 2,013 Other accrued expenses 1,126 939 Liabilities held for sale $ 5,193 $ 5,490 The results of discontinued operations for the three and six months ended June 30, 2016 and 2015 were as follows: Three Months Ended June 30, Six Months Ended June 30, 201 6 2015 201 6 2015 Revenue $ 9,766 $ 11,159 $ 22,206 $ 27,373 Cost of revenue (5,053 ) (5,749 ) (12,204 ) (12,822 ) Operating expenses (5,279 ) (6,017 ) (10,263 ) (11,902 ) Other income — — 176 — Benefit (provision) for income taxes 154 1,151 (17 ) (505 ) Net income (loss) from discontinued operations $ (412 ) $ 544 $ (102 ) $ 2,144 The results of discontinued operations include the following: Three Months Ended June 30, Six Months Ended June 30, 201 6 2015 201 6 2015 Depreciation and amortization $ 459 $ 390 $ 958 $ 853 Stock-based compensation expense 1,056 1,075 2,010 2,118 Property and equipment expenditures 794 122 2,198 158

Note 4 - Investments

Note 4 - Investments	6 Months Ended
	Jun. 30, 2016
Notes to Financial Statements
Investment [Text Block]	4 . Investments The following table summarizes the investments by investment category: June 30 , 201 6 December 31, 201 5 Cost Fair Value Cost Fair Value Available-for-sale securities: U.S. treasury securities $ 6,000 $ 6,012 $ 2,998 $ 2,993 Municipal bonds 28,215 28,239 20,042 20,036 Corporate notes/bonds 109,147 109,340 14,700 14,657 Government agency bonds 6,440 6,444 4,011 4,007 Commercial paper 23,540 23,541 — — Asset backed securities 7,312 7,324 1,926 1,923 Total investments $ 180,654 $ 180,900 $ 43,677 $ 43,616 As of June 30, 2016, the Company had 13 investments that were in an unrealized loss position. The gross unrealized losses on these investments at June 30, 2016 of $13 were determined to be temporary in nature. The Company reviews the investments to identify and evaluate investments that have an indication of possible other-than-temporary impairment. Factors considered in determining whether a loss is other-than-temporary include the length of time and extent to which fair value has been less than the cost basis, the financial condition and near-term prospects of the investee, and the intent and ability to hold the investment for a period of time sufficient to allow for any anticipated recovery in market value. The realized gain related to the Company’s available-for-sale investment which was reclassified from other comprehensive income was included in other income in the condensed consolidated statements of income. The contractual maturities of available-for-sale securities at June 30, 2016 are presented in the following table: Cost Fair Value Due in one year or less $ 139,785 $ 139,854 Due between one and five years 40,869 41,046 $ 180,654 $ 180,900

Note 5 - Inventories

Note 5 - Inventories	6 Months Ended
	Jun. 30, 2016
Notes to Financial Statements
Inventory Disclosure [Text Block]	5 . Inventories Inventories consist of the following: June 30, 201 6 December 31, 2015 Raw materials $ 1,207 $ 2,491 Work in process 3,799 2,503 Finished goods 6,807 7,370 $ 11,813 $ 12,364 Finished goods include $862 and $1,435 of inventories held by distributors as of June 30, 2016 and December 31, 2015, respectively.

Note 6 - Property and Equipment

Note 6 - Property and Equipment, Net	6 Months Ended
	Jun. 30, 2016
Notes to Financial Statements
Property, Plant and Equipment Disclosure [Text Block]	6 . Property and Equipment, net Property and equipment consist of the following: June 30, 201 6 December 31, 2015 Laboratory and production equipment $ 54,376 $ 46,875 Office, software and computer equipment 20,514 18,556 Furniture and fixtures 1,301 1,264 Leasehold improvements 5,952 5,866 82,143 72,561 Less accumulated depreciation (46,583 ) (38,937 ) $ 35,560 $ 33,624 Depreciation and amortization expense of property and equipment for the three and six months ended June 30, 2016 was $4,086 and $7,638, respectively. Depreciation and amortization expense of property and equipment for the three and six months ended June 30, 2015 was $2,921 and $5,696, respectively. As of June 30, 2016 and December 31, 2015, computer software costs included in property and equipment were $6,384 and $5,929, respectively. Amortization expense of capitalized computer software costs was $299 and $586 for the three and six months ended June 30, 2016, respectively. Amortization expense of capitalized computer software costs was $249 and $482 for the three and six months ended June 30, 2015, respectively. Property and equipment not paid as of June 30, 2016 and December 31, 2015 were $1,975 and $1,949, respectively. Depreciation and amortization expense of property and equipment held for sale for the three and six months ended June 30, 2016 was $459 and $958, respectively. Depreciation and amortization expense of property and equipment held for sale for the three and six months ended June 30, 2015 was $390 and $853, respectively.

Note 7 - Identifiable Intangibl

Note 7 - Identifiable Intangible Assets	6 Months Ended
	Jun. 30, 2016
Notes to Financial Statements
Intangible Assets Disclosure [Text Block]	7 . Identifiable Intangible Assets The following table presents details of identifiable intangible assets: June 30, 201 6 December 31, 2015 Gross Accumulated Amortization Net Gross Accumulated Amortization Net Developed technology $ 71,570 $ 20,105 $ 51,465 $ 71,570 $ 14,356 $ 57,214 Customer relationships 8,170 1,427 6,743 8,170 1,018 7,152 Trade name 920 322 598 920 230 690 Patents 1,579 452 1,127 1,579 346 1,233 $ 82,239 $ 22,306 $ 59,933 $ 82,239 $ 15,950 $ 66,289 The following table presents amortization of intangible assets for the three and six months ended June 30, 2016 and 2015: Three Months Ended June 30, Six Months Ended June 30, 201 6 2015 201 6 2015 Cost of goods sold $ 2,875 $ 2,875 $ 5,750 $ 5,750 Sales and marketing 204 204 408 408 General and administrative 99 106 198 213 $ 3,178 $ 3,185 $ 6,356 $ 6,371 In the three months ended June 30, 2015, the Company abandoned the project related to in-process research and development and recorded an impairment charge of $1,750 included in the research and development expenses in the condensed consolidated statements of income. Based on the amount of intangible assets subject to amortization at June 30, 2016, the expected amortization expense for each of the next five fiscal years and thereafter is as follows: 2016 (remaining) $ 6,350 2017 12,682 2018 12,648 2019 11,078 2020 6,394 Thereafter 10,781 $ 59,933 The weighted-average amortization periods remaining by intangible asset category are as follows (in years): Developed technology 4.87 Customer relationship 8.25 Others 9.65

Note 8 - Product Warranty Oblig

Note 8 - Product Warranty Obligation	6 Months Ended
	Jun. 30, 2016
Notes to Financial Statements
Product Warranty Disclosure [Text Block]	8 . Product Warranty Obligation As of June 30, 2016 and December 31, 2015, the product warranty liability was $110. There was no movement in product warranty liability during the three and six months ended June 30, 2016 and 2015.

Note 9 - Convertible Debt

Note 9 - Convertible Debt	6 Months Ended
	Jun. 30, 2016
Convertible Debt [Member]
Notes to Financial Statements
Debt Disclosure [Text Block]	9 . Convertible debt In December 2015, the Company issued $230,000 of 1.125% convertible senior notes due 2020 (Convertible Notes). The Convertible Notes will mature December 1, 2020, unless earlier converted or repurchased. Interest on the Convertible Notes is payable on June 1 and December 1 of each year, beginning on June 1, 2016. The initial conversion rate is 24.8988 shares of common stock per $1 principal amount of Convertible Notes, which represents an initial conversion price of approximately $40.16 per share. The total interest expense recognized for the three months ended June 30, 2016 was $3,171, which consists of $521 of contractual interest expense, $2,432 of amortization of debt discount and $218 of amortization of debt issuance costs. The total interest expense recognized for the six months ended June 30, 2016 was $6,303, which consists of $1,276 of contractual interest expense, $4,613 of amortization of debt discount and $414 of amortization of debt issuance costs. In connection with the issuance of the Convertible Notes, the Company entered into capped call transactions (Capped Call) in private transactions. Under the Capped Call, the Company purchased capped call options that in aggregate relate to 100% of the total number of shares of the Company's common stock underlying the Convertible Notes, with a strike price equal to the conversion price of the Convertible Notes and with a cap price equal to $52.06 per share.

Note 10 - Other Long-term Liabi

Note 10 - Other Long-term Liabilities	6 Months Ended
	Jun. 30, 2016
Notes to Financial Statements
Other Liabilities Disclosure [Text Block]	10 . Other long-term liabilities Other long-term liabilities consist of the following: June 30, 201 6 December 31, 201 5 Deferred rent $ 1,348 $ 1,728 Income tax payable 1,589 6,969 $ 2,937 $ 8,697

Note 11 - Income Taxes

Note 11 - Income Taxes	6 Months Ended
	Jun. 30, 2016
Notes to Financial Statements
Income Tax Disclosure [Text Block]	11. Income Taxes The Company determined its interim provision using an estimated single annual effective tax rate for all tax jurisdictions for the three and six months ended June 30, 2016. For the three and six months ended June 30, 2015, the Company determined its interim tax provision applying a separate estimated annual effective tax rate to its loss jurisdictions. ASC 740 provides that when an entity operates in a jurisdiction that has generated ordinary losses on a year-to-date basis or on the basis of the results anticipated for the full fiscal year and no benefit can be recognized on those losses, a separate effective tax rate should be computed and applied to ordinary income (or loss) in that jurisdiction. The Company incurred pretax loss during the three and six months ended June 30, 2015 from the Singapore operation and did not recognize tax benefit of the losses due to full valuation allowance established against deferred tax assets. Thus, a separate effective tax rate was applied to the Singapore jurisdiction to compute the Company’s interim tax expense. The Company recorded an income tax provision (benefit) from continuing operations of $303 and ($29) in the three and six months ended June 30, 2016, respectively. The effective tax rate for the three and six months ended June 30, 2016 was 24% and (4%), respectively. The difference between the effective tax rates and the 34% federal statutory rate was primarily due to the change in valuation allowance, foreign income taxes provided at lower rates, geographic mix in operating results, unrecognized tax benefits, recognition of federal and state research and development credits and windfall tax benefits from stock-based compensation from early adoption of Accounting Standards Update 2016-09. The Company recorded an income tax provision (benefit) from continuing operations of ($869) and $1,869 in the three and six months ended June 30, 2015, respectively. The effective tax rate for the three and six months ended June 30, 2015 was 61% and (19%), respectively. The difference between the effective tax rates and the 34% federal statutory rate was primarily due to the change in valuation allowance, foreign income taxes provided at lower rates, geographic mix in operating results, unrecognized tax benefits, stock-based compensation adjustments and recognition of state research and development credits. During the three and six months ended June 30, 2016, the gross amount of the Company’s unrecognized tax benefits increased (decreased) by approximately $296 and ($1,588), respectively primarily due to a state tax audit settlement and expiration of the statute of limitations on certain foreign income taxes, partially offset by the results of tax positions taken during the current year. Substantially all of the unrecognized tax benefits as of June 30, 2016, if recognized, would affect the Company’s effective tax rate. The Company believes that in the next twelve months, it is reasonably possible that the gross unrecognized tax benefit may decrease by approximately $100 due to the expiration of statute of limitations on certain foreign income taxes. The Company does not provide for U.S. income taxes on undistributed earnings of its controlled foreign corporations that are intended to be invested indefinitely outside the United States.

Note 12 - Earnings Per Share

Note 12 - Earnings Per Share	6 Months Ended
	Jun. 30, 2016
Notes to Financial Statements
Earnings Per Share [Text Block]	1 2 . Earnings Per Share The following shows the reconciliation of weighted average shares used in the calculation of basic and diluted earnings per share: Three Months Ended June 30, Six Months Ended June 30, 201 6 2015 201 6 2015 Weighted-average common stock—basic 40,412,319 38,431,307 40,085,260 38,065,942 Effect of potentially dilutive securities: Add options to purchase common stock 1,324,796 — 1,327,237 — Add unvested restricted stock unit 2,101,373 — 2,234,865 — Add employee stock purchase plan — — 32,955 — Weighted-average common stock—diluted 43,838,488 38,431,307 43,680,317 38,065,942 The following securities were not included in the computation of diluted earnings per share as inclusion would have been anti-dilutive: Three Months Ended June 30, Six Months Ended June 30, 2016 2015 201 6 2015 Common stock options — 2,615,744 — 2,774,985 Restricted stock unit 939,346 4,856,581 479,679 4,652,690 Convertible debt 5,727,092 — 5,727,092 — 6,666,438 7,472,325 6,206,771 7,427,675 As discussed in Note 2, the Company early adopted ASU 2016-09. Based on the new guidance, the excess tax benefit is no longer included in the weighted diluted common stock calculation under the treasury stock method and therefore, increased the total weighted diluted common stock by 969,985 and 971,547 in the three and six months ended June 30, 2016, respectively. This change was applied prospectively.

Note 13 - Stock-based Compensat

Note 13 - Stock-based Compensation	6 Months Ended
	Jun. 30, 2016
Notes to Financial Statements
Disclosure of Compensation Related Costs, Share-based Payments [Text Block]	1 3 . Stock–Based Compensation In June 2010, the Board of Directors (the “Board”) approved the Company’s 2010 Stock Incentive Plan (the “2010 Plan”), which became effective in November 2010. The 2010 Plan provides for the grants of restricted stock, stock appreciation rights and stock unit awards to employees, non-employee directors, advisors and consultants. The Compensation Committee administers the 2010 Plan, including the determination of the recipient of an award, the number of shares subject to each award, whether an option is to be classified as an incentive stock option or nonstatutory option, and the terms and conditions of each award, including the exercise and purchase prices and the vesting or duration of the award. Options granted under the 2010 Plan are exercisable only upon vesting. At June 30, 2016, 2,889,858 shares of common stock have been reserved for future grants under the 2010 Plan. Stock Option Awards The Company did not grant any stock options during the three and six months ended June 30, 2016 and 2015. The following table summarizes information regarding options outstanding: Number of Weighted Weighted Aggregate Outstanding at December 31, 201 5 2,256,396 $ 10.61 5.29 $ 37,036 Granted — — Exercised (311,985 ) 9.25 Canceled (3,167 ) 8.83 Outstanding at June 30, 201 6 1,941,244 $ 10.83 4.84 $ 41,159 Exercisable at June 30, 201 6 1,897,477 $ 10.84 4.79 $ 40,207 Vested and expected to vest at June 30, 201 6 1,941,021 $ 10.83 4.84 $ 41,155 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 months ended June 30, 2016 and 2015 was $6,855 and $7,971, respectively. The intrinsic value of exercised options is calculated based on the difference between the exercise price and the fair value of the Company’s common stock as of the exercise date. Cash received from the exercise of stock options was $2,607 and $4,469, respectively, for the six months ended June 30, 2016 and 2015. Restricted Stock Units and Awards The Company granted restricted stock units (“RSUs”) to members of the Board and employees. Most of the Company’s outstanding RSUs vest over four years with vesting contingent upon continuous service. The Company estimates the fair value of RSUs using the market price of the common stock on the date of the grant. The fair value of these awards is amortized on a straight-line basis over the vesting period. The following table summarizes information regarding outstanding restricted stock units : Number of Weighted Value Per Share Outstanding at December 31, 201 5 4,600,869 $ 15.37 Granted 1,394,799 32.68 Vested (1,205,465 ) 14.31 Canceled (297,315 ) 17.38 Outstanding at June 30, 201 6 4,492,888 $ 20.89 Expected to vest at June 30, 201 6 4,378,136 The RSUs include performance-based stock units subject to achievement of pre-established revenue goal and earnings per share on non-GAAP basis. Once the goals are met, the performance-based stock units are subject to four years of vesting from the original grant date, contingent upon continuous service. The total performance-based units that vested for the three and six months ended June 30, 2016 was 31,786. As of June 30, 2016, the total performance-based units outstanding was 300,356. Employee Stock Purchase Plan In December 2011, the Company adopted the Employee Stock Purchase Plan (“ESPP”). Participants purchase the Company's stock using payroll deductions, which may not exceed 15% of their total cash compensation. Pursuant to the terms of the ESPP, the "look-back" period for the stock purchase price is six months. Offering and purchase periods will begin on February 10 and August 10 of each year. Participants will be granted the right to purchase common stock at a price per share that is 85% of the lesser of the fair market value of the Company's common stock at the beginning or the end of each six-month period. The ESPP imposes certain limitations upon an employee’s right to acquire common stock, including the following: (i) no employee shall be granted a right to participate if such employee immediately after the election to purchase common stock, would own stock possessing 5% or more of the total combined voting power or value of all classes of stock of the Company, and (ii) no employee may be granted rights to purchase more than $25 fair value of common stock for each calendar year. The maximum aggregate number of shares of common stock available for purchase under the ESPP is 1,750,000 shares. The total common stock issued under the ESPP during the six months ended June 30, 2016 and 2015 was 164,696 and 160,776, respectively. The fair value of the ESPP is estimated at the start of offering period using the Black-Scholes option pricing model with the following assumptions: Six Months Ended June 30, 201 6 2015 Risk-free interest rate 0.45 % 0.07 % Expected life (in years) 0.50 0.50 Dividend yield — — Expected volatility 55 % 41 % Estimated fair value $ 7.26 $ 5.34 Stock-Based Compensation Expense Stock-based compensation expense is included in the Company’s results of operations as follows: Three Months Ended June 30, Six Months Ended June 30, 2016 2015 2016 2015 Operating expenses Cost of goods sold $ 426 $ 358 $ 761 $ 696 Research and development 4,684 3,510 8,398 6,546 Sales and marketing 952 884 1,728 1,641 General and administrative 662 1,375 1,835 2,621 Discontinued operations 1,056 1,075 2,010 2,118 $ 7,780 $ 7,202 $ 14,732 $ 13,622 Total unrecognized compensation cost related to unvested stock options, restricted stock units and awards at June 30, 2016, prior to the consideration of expected forfeitures, is approximately $79,366 and is expected to be recognized over a weighted-average period of 2.95 years. The Company early adopted Accounting Standards Update 2016-09. The effect of adoption resulted to a net credit of $5,261 on the beginning balance of accumulated deficit from previously unrecorded deferred tax assets for net operating loss carryover generated by windfall tax benefit. The adoption increased weighted average diluted common stock by 969,985 and 971,547 in the three and six months ended June 30, 2016, respectively. In addition, the current period’s excess tax benefit related to stock-based compensation is presented as operating activity in the statement of cash flows. The change in the cash flow was adopted retrospectively and the Company reclassified $829 of excess tax benefit for the six months ended June 30, 2015 from financing activity to operating activity.

Note 14 - Fair Value Measuremen

Note 14 - Fair Value Measurements	6 Months Ended
	Jun. 30, 2016
Notes to Financial Statements
Fair Value Disclosures [Text Block]	1 4 . Fair Value Measurements The guidance on fair value measurements requires fair value measurements to be classified and disclosed in one of the following three categories: Level 1 Level 2 Level 3 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 under the 1940 Act, which approximates fair value. The Company determines the amount of transfers between Levels 1 and 2 or transfers into or out of Level 3 by using the end-of-period fair value. The Company had no transfers among the fair value hierarchy during the three and six months ended June 30, 2016. The following table presents information about assets required to be carried at fair value on a recurring basis: June 30 , 201 6 Total Level 1 Level 2 Assets Cash equivalents: Money market funds $ 85,465 $ 20,967 $ 64,498 Investment in marketable securities: US treasury securities 6,012 6,012 — Municipal bonds 28,239 — 28,239 Corporate notes/bonds 109,340 — 109,340 Government agency bonds 6,444 — 6,444 Commercial papers 23,541 — 23,541 Asset backed securities 7,324 — 7,324 $ 266,365 $ 26,979 $ 239,386 Liabilities Convertible Notes $ 243,253 $ — $ 243,253 December 31, 2015 Total Level 1 Level 2 Assets Cash equivalents: Money market funds $ 102,008 $ — $ 102,008 Investment in marketable securities: US treasury securities 2,993 2,993 — Municipal bonds 20,036 — 20,036 Corporate notes/bonds 14,657 — 14,657 Government agency bonds 4,007 — 4,007 Asset backed securities 1,923 — 1,923 $ 145,624 $ 2,993 $ 142,631 Liabilities Convertible Notes $ 221,950 $ — $ 221,950 The Convertible Notes are carried on the Consolidated Balance Sheets at their original issuance value including accreted interest, net of unamortized debt discount and issuance cost. The Convertible Notes are not marked to fair value at the end of each reporting period. As of June 30, 2016 and December 31, 2015, the fair value of Convertible Notes was determined on the basis of market prices observable for similar instruments and is considered Level 2 in the fair value hierarchy.

Note 15 - Segment and Geographi

Note 15 - Segment and Geographic Information	6 Months Ended
	Jun. 30, 2016
Notes to Financial Statements
Segment Reporting Disclosure [Text Block]	1 5 . Segment and Geographic Information 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 product is transported, which may differ from the customer’s principal offices. The following table sets forth the Company’s revenue by geographic region: Three Months Ended June 30, Six Months Ended June 30, 201 6 2015 201 6 2015 China $ 19,947 $ 15,291 $ 40,514 $ 29,818 United States 6,495 8,840 14,467 16,262 Thailand 10,974 9,462 16,652 14,925 Japan 8,717 5,523 15,842 10,731 Other 14,391 10,397 27,140 20,723 $ 60,524 $ 49,513 $ 114,615 $ 92,459 As of June 30, 2016, $6,079 of long-lived tangible assets are located outside the United States, of which $5,441 are located in Taiwan. As of December 31, 2015, $5,054 of long-lived tangible assets are located outside the United States of which $4,372 are located in Taiwan.

Note 16 - Commitments and Conti

Note 16 - Commitments and Contingencies	6 Months Ended
	Jun. 30, 2016
Notes to Financial Statements
Commitments and Contingencies Disclosure [Text Block]	1 6 . Commitments and Contingencies Leases The Company leases its facility under noncancelable lease agreements expiring in various years through 2021. The Company also licenses certain software used in its research and development activities under a term license subscription and maintenance arrangement. As of June 30, 2016, future minimum lease payments under noncancelable operating leases having initial terms in excess of one year are as follows: 2016 (remaining) $ 8,118 2017 4,539 2018 2,190 2019 1,713 2020 and thereafter 288 $ 16,848 For the three and six months ended June 30, 2016, lease operating expense was $3,811 and $6,094, respectively. For the three and six months ended June 30, 2015, lease operating expense was $2,974 and $6,017, respectively. Noncancelable Purchase Obligations The Company depends upon third party subcontractors to manufacture its wafers. These subcontractor relationships typically allow for the cancellation of outstanding purchase orders, but require payment of all expenses incurred through the date of cancellation. As of June 30, 2016, the total value of open purchase orders for wafers was approximately $9,394. Legal Proceedings Netlist, Inc. v. Inphi Corporation, Case No. 09-cv-6900 (C.D. Cal.) On September 22, 2009, Netlist filed suit in the United States District Court, Central District of California, or the Court, asserting that the Company infringes U.S. Patent No. 7,532,537. Netlist filed an amended complaint on December 22, 2009, further asserting that the Company infringes U.S. Patent Nos. 7,619,912 and 7,636,274, collectively with U.S. Patent No. 7,532,537, the patents-in-suit, and seeking both unspecified monetary damages to be determined and an injunction to prevent further infringement. These infringement claims allege that the iMB™ and certain other memory module components infringe the patents-in-suit. The Company answered the amended complaint on February 11, 2010 and asserted that the Company does not infringe the patents-in-suit and that the patents-in-suit are invalid. In 2010, the Company filed inter partes As to the proceeding at the USPTO, reexamination has been ordered for all of the patents that were alleged to infringe, and at present, the USPTO has determined that almost all of the originally filed claims are not valid, with certain amended claims being determined patentable. It is expected that a Reexamination Certificate will issue for U.S. Patent No. 7,532,537 based upon amended claims, and the parties continue to assert their respective positions with respect to the reexamination proceedings for U.S. Patent Nos. 7,619,912 and 7,636,274. While the Company intends to defend the foregoing USPTO proceedings and lawsuit vigorously, the USPTO proceedings and litigation, whether or not determined in the Company’s favor or settled, could be costly and time-consuming and could divert management’s attention and resources, which could adversely affect the Company’s business. Based on the nature of USPTO proceedings and litigation, the Company is currently unable to predict the final outcome of this lawsuit and therefore, cannot determine the likelihood of loss nor estimate a range of possible loss. However, because of the nature and inherent uncertainties of litigation, should the outcome of these actions be unfavorable, the Company’s business, financial condition, results of operations or cash flows could be materially and adversely affected. Indemnifications In the ordinary course of business, the Company may provide indemnifications of varying scope and terms to customers, vendors, lessors, investors, directors, officers, employees and other parties with respect to certain matters, including, but not limited to, losses arising out of the Company’s breach of such agreements, services to be provided by the Company, or from intellectual property infringement claims made by third-parties. These indemnifications may survive termination of the underlying agreement and the maximum potential amount of future payments the Company could be required to make under these indemnification provisions may not be subject to maximum loss clauses. The Company has not incurred material costs to defend lawsuits or settle claims related to these indemnifications. Accordingly, the Company has no liabilities recorded for these agreements as of June 30, 2016 and December 31, 2015.

Note 17 - Subsequent Events

Note 17 - Subsequent Events	6 Months Ended
	Jun. 30, 2016
Notes to Financial Statements
Subsequent Events [Text Block]	1 7 . Subsequent Events On August 4, 2016, the Company completed the sale of its memory product business to Rambus Inc. In connection with the sale, the Company entered into a transition service agreement with Rambus Inc. under which the Company will provide certain services on an interim, transitional basis, for a period of six months. The gain from the sale of the memory product business is expected to be material which will be reported in the third quarter of 2016.

Note 3 - Discontinued Operati24

Note 3 - Discontinued Operations (Tables)	6 Months Ended
	Jun. 30, 2016
Notes Tables
Disposal Groups, Including Discontinued Operations [Table Text Block]	June 30, 201 6 December 31, 2015 Assets Current assets Inventories $ 5,667 $ 5,464 Prepaid expenses and other current assets 180 68 Property and equipment, net 3,907 — Goodwill 714 — Total current assets held for sale 10,468 5,532 Noncurrent assets Property and equipment, net — 2,656 Goodwill — 714 Assets held for sale $ 10,468 $ 8,902 Liabilities Accounts payable $ 2,168 $ 2,538 Deferred revenue 1,899 2,013 Other accrued expenses 1,126 939 Liabilities held for sale $ 5,193 $ 5,490
Schedule of Results from Discontinued Operations [Table Text Block]	Three Months Ended June 30, Six Months Ended June 30, 201 6 2015 201 6 2015 Revenue $ 9,766 $ 11,159 $ 22,206 $ 27,373 Cost of revenue (5,053 ) (5,749 ) (12,204 ) (12,822 ) Operating expenses (5,279 ) (6,017 ) (10,263 ) (11,902 ) Other income — — 176 — Benefit (provision) for income taxes 154 1,151 (17 ) (505 ) Net income (loss) from discontinued operations $ (412 ) $ 544 $ (102 ) $ 2,144 Three Months Ended June 30, Six Months Ended June 30, 201 6 2015 201 6 2015 Depreciation and amortization $ 459 $ 390 $ 958 $ 853 Stock-based compensation expense 1,056 1,075 2,010 2,118 Property and equipment expenditures 794 122 2,198 158

Note 4 - Investments (Tables)

Note 4 - Investments (Tables)	6 Months Ended
	Jun. 30, 2016
Notes Tables
Available-for-sale Securities [Table Text Block]	June 30 , 201 6 December 31, 201 5 Cost Fair Value Cost Fair Value Available-for-sale securities: U.S. treasury securities $ 6,000 $ 6,012 $ 2,998 $ 2,993 Municipal bonds 28,215 28,239 20,042 20,036 Corporate notes/bonds 109,147 109,340 14,700 14,657 Government agency bonds 6,440 6,444 4,011 4,007 Commercial paper 23,540 23,541 — — Asset backed securities 7,312 7,324 1,926 1,923 Total investments $ 180,654 $ 180,900 $ 43,677 $ 43,616
Investments Classified by Contractual Maturity Date [Table Text Block]	Cost Fair Value Due in one year or less $ 139,785 $ 139,854 Due between one and five years 40,869 41,046 $ 180,654 $ 180,900

Note 5 - Inventories (Tables)

Note 5 - Inventories (Tables)	6 Months Ended
	Jun. 30, 2016
Notes Tables
Schedule of Inventory, Current [Table Text Block]	June 30, 201 6 December 31, 2015 Raw materials $ 1,207 $ 2,491 Work in process 3,799 2,503 Finished goods 6,807 7,370 $ 11,813 $ 12,364

Note 6 - Property and Equipme27

Note 6 - Property and Equipment, Net (Tables)	6 Months Ended
	Jun. 30, 2016
Notes Tables
Property, Plant and Equipment [Table Text Block]	June 30, 201 6 December 31, 2015 Laboratory and production equipment $ 54,376 $ 46,875 Office, software and computer equipment 20,514 18,556 Furniture and fixtures 1,301 1,264 Leasehold improvements 5,952 5,866 82,143 72,561 Less accumulated depreciation (46,583 ) (38,937 ) $ 35,560 $ 33,624

Note 7 - Identifiable Intangi28

Note 7 - Identifiable Intangible Assets (Tables)	6 Months Ended
	Jun. 30, 2016
Notes Tables
Schedule of Finite-Lived Intangible Assets [Table Text Block]	June 30, 201 6 December 31, 2015 Gross Accumulated Amortization Net Gross Accumulated Amortization Net Developed technology $ 71,570 $ 20,105 $ 51,465 $ 71,570 $ 14,356 $ 57,214 Customer relationships 8,170 1,427 6,743 8,170 1,018 7,152 Trade name 920 322 598 920 230 690 Patents 1,579 452 1,127 1,579 346 1,233 $ 82,239 $ 22,306 $ 59,933 $ 82,239 $ 15,950 $ 66,289
Finite-lived Intangible Assets Amortization Expense [Table Text Block]	Three Months Ended June 30, Six Months Ended June 30, 201 6 2015 201 6 2015 Cost of goods sold $ 2,875 $ 2,875 $ 5,750 $ 5,750 Sales and marketing 204 204 408 408 General and administrative 99 106 198 213 $ 3,178 $ 3,185 $ 6,356 $ 6,371
Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block]	2016 (remaining) $ 6,350 2017 12,682 2018 12,648 2019 11,078 2020 6,394 Thereafter 10,781 $ 59,933
Finite Lived Intangible Assets Remaining Amortization Period [Table Text Block]	Developed technology 4.87 Customer relationship 8.25 Others 9.65

Note 10 - Other Long-term Lia29

Note 10 - Other Long-term Liabilities (Tables)	6 Months Ended
	Jun. 30, 2016
Notes Tables
Other Noncurrent Liabilities [Table Text Block]	June 30, 201 6 December 31, 201 5 Deferred rent $ 1,348 $ 1,728 Income tax payable 1,589 6,969 $ 2,937 $ 8,697

Note 12 - Earnings Per Share (T

Note 12 - Earnings Per Share (Tables)	6 Months Ended
	Jun. 30, 2016
Notes Tables
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]	Three Months Ended June 30, Six Months Ended June 30, 201 6 2015 201 6 2015 Weighted-average common stock—basic 40,412,319 38,431,307 40,085,260 38,065,942 Effect of potentially dilutive securities: Add options to purchase common stock 1,324,796 — 1,327,237 — Add unvested restricted stock unit 2,101,373 — 2,234,865 — Add employee stock purchase plan — — 32,955 — Weighted-average common stock—diluted 43,838,488 38,431,307 43,680,317 38,065,942
Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table Text Block]	Three Months Ended June 30, Six Months Ended June 30, 2016 2015 201 6 2015 Common stock options — 2,615,744 — 2,774,985 Restricted stock unit 939,346 4,856,581 479,679 4,652,690 Convertible debt 5,727,092 — 5,727,092 — 6,666,438 7,472,325 6,206,771 7,427,675

Note 13 - Stock-based Compens31

Note 13 - Stock-based Compensation (Tables)	6 Months Ended
	Jun. 30, 2016
Notes Tables
Schedule of Share-based Compensation, Activity [Table Text Block]	Number of Weighted Weighted Aggregate Outstanding at December 31, 201 5 2,256,396 $ 10.61 5.29 $ 37,036 Granted — — Exercised (311,985 ) 9.25 Canceled (3,167 ) 8.83 Outstanding at June 30, 201 6 1,941,244 $ 10.83 4.84 $ 41,159 Exercisable at June 30, 201 6 1,897,477 $ 10.84 4.79 $ 40,207 Vested and expected to vest at June 30, 201 6 1,941,021 $ 10.83 4.84 $ 41,155
Schedule of Nonvested Restricted Stock Units Activity [Table Text Block]	Number of Weighted Value Per Share Outstanding at December 31, 201 5 4,600,869 $ 15.37 Granted 1,394,799 32.68 Vested (1,205,465 ) 14.31 Canceled (297,315 ) 17.38 Outstanding at June 30, 201 6 4,492,888 $ 20.89 Expected to vest at June 30, 201 6 4,378,136
Schedule of Share-based Payment Award, Employee Stock Purchase Plan, Valuation Assumptions [Table Text Block]	Six Months Ended June 30, 201 6 2015 Risk-free interest rate 0.45 % 0.07 % Expected life (in years) 0.50 0.50 Dividend yield — — Expected volatility 55 % 41 % Estimated fair value $ 7.26 $ 5.34
Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Table Text Block]	Three Months Ended June 30, Six Months Ended June 30, 2016 2015 2016 2015 Operating expenses Cost of goods sold $ 426 $ 358 $ 761 $ 696 Research and development 4,684 3,510 8,398 6,546 Sales and marketing 952 884 1,728 1,641 General and administrative 662 1,375 1,835 2,621 Discontinued operations 1,056 1,075 2,010 2,118 $ 7,780 $ 7,202 $ 14,732 $ 13,622

Note 14 - Fair Value Measurem32

Note 14 - Fair Value Measurements (Tables)	6 Months Ended
	Jun. 30, 2016
Notes Tables
Fair Value, Assets Measured on Recurring Basis [Table Text Block]	June 30 , 201 6 Total Level 1 Level 2 Assets Cash equivalents: Money market funds $ 85,465 $ 20,967 $ 64,498 Investment in marketable securities: US treasury securities 6,012 6,012 — Municipal bonds 28,239 — 28,239 Corporate notes/bonds 109,340 — 109,340 Government agency bonds 6,444 — 6,444 Commercial papers 23,541 — 23,541 Asset backed securities 7,324 — 7,324 $ 266,365 $ 26,979 $ 239,386 Liabilities Convertible Notes $ 243,253 $ — $ 243,253 December 31, 2015 Total Level 1 Level 2 Assets Cash equivalents: Money market funds $ 102,008 $ — $ 102,008 Investment in marketable securities: US treasury securities 2,993 2,993 — Municipal bonds 20,036 — 20,036 Corporate notes/bonds 14,657 — 14,657 Government agency bonds 4,007 — 4,007 Asset backed securities 1,923 — 1,923 $ 145,624 $ 2,993 $ 142,631 Liabilities Convertible Notes $ 221,950 $ — $ 221,950

Note 15 - Segment and Geograp33

Note 15 - Segment and Geographic Information (Tables)	6 Months Ended
	Jun. 30, 2016
Notes Tables
Schedule of Revenue from External Customers and Long-Lived Assets, by Geographical Areas [Table Text Block]	Three Months Ended June 30, Six Months Ended June 30, 201 6 2015 201 6 2015 China $ 19,947 $ 15,291 $ 40,514 $ 29,818 United States 6,495 8,840 14,467 16,262 Thailand 10,974 9,462 16,652 14,925 Japan 8,717 5,523 15,842 10,731 Other 14,391 10,397 27,140 20,723 $ 60,524 $ 49,513 $ 114,615 $ 92,459

Note 16 - Commitments and Con34

Note 16 - Commitments and Contingencies (Tables)	6 Months Ended
	Jun. 30, 2016
Notes Tables
Schedule of Future Minimum Rental Payments for Operating Leases [Table Text Block]	2016 (remaining) $ 8,118 2017 4,539 2018 2,190 2019 1,713 2020 and thereafter 288 $ 16,848

Note 1 - Organization and Bas35

Note 1 - Organization and Basis of Presentation (Details Textual) - Memory Product Business [Member] - Discontinued Operations, Held-for-sale [Member] - Rambus Inc. [Member] $ in Thousands	Jun. 29, 2016USD ($)
Disposal Group, Including Discontinued Operation, Consideration	$ 90,000
Amount Held in Escrow as Security for Indemnification	$ 11,250

Note 3 - Discontinued Operati36

Note 3 - Discontinued Operations (Details Textual) - Memory Product Business [Member] - Discontinued Operations, Held-for-sale [Member] - Rambus Inc. [Member] - USD ($) $ in Thousands	Aug. 04, 2016	Jun. 29, 2016
Subsequent Event [Member]
Amount Held in Escrow as Security for Indemnification	$ 11,250
Disposal Group, Including Discontinued Operation, Consideration		$ 90,000

Note 3 - Components of Disconti

Note 3 - Components of Discontinued Operations (Details) - USD ($)	Jun. 30, 2016	Dec. 31, 2015
Current assets
Inventories	$ 5,667,000	$ 5,464,000
Prepaid expenses and other current assets	180,000	68,000
Property and equipment, net	3,907,000
Goodwill	714,000
Total current assets held for sale	10,468,000	5,532,000
Noncurrent assets
Property and equipment, net		2,656,000
Goodwill		714,000
Assets held for sale	10,468,000	8,902,000
Liabilities
Accounts payable	2,168,000	2,538,000
Deferred revenue	1,899,000	2,013,000
Other accrued expenses	1,126,000	939,000
Liabilities held for sale	$ 5,193,000	$ 5,490,000

Note 3 - Results of Discontinue

Note 3 - Results of Discontinued Operations (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Revenue	$ 9,766	$ 11,159	$ 22,206	$ 27,373
Cost of revenue	(5,053)	(5,749)	(12,204)	(12,822)
Operating expenses	(5,279)	(6,017)	(10,263)	(11,902)
Other income			176
Benefit (provision) for income taxes	154	1,151	(17)	(505)
Net income (loss) from discontinued operations	(412)	544	(102)	2,144
Depreciation and amortization, discontinued operations	459	390	958	853
Stock-based compensation expense	1,056	1,075	2,010	2,118
Property and equipment expenditures	$ 794	$ 122	$ 2,198	$ 158

Note 4 - Investments (Details T

Note 4 - Investments (Details Textual) $ in Thousands	Jun. 30, 2016USD ($)
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions	13
Available-for-sale Equity Securities, Accumulated Gross Unrealized Loss, before Tax	$ 13

Note 4 - Summary of Investments

Note 4 - Summary of Investments by Investment (Details) - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015
US Treasury Securities [Member]
Available-for-sale securities, amortized cost	$ 6,000	$ 2,998
Available-for-sale securities, fair value	6,012	2,993
US States and Political Subdivisions Debt Securities [Member]
Available-for-sale securities, amortized cost	28,215	20,042
Available-for-sale securities, fair value	28,239	20,036
Corporate Debt Securities [Member]
Available-for-sale securities, amortized cost	109,147	14,700
Available-for-sale securities, fair value	109,340	14,657
US Government Agencies Debt Securities [Member]
Available-for-sale securities, amortized cost	6,440	4,011
Available-for-sale securities, fair value	6,444	4,007
Commercial Paper [Member]
Available-for-sale securities, amortized cost	23,540
Available-for-sale securities, fair value	23,541
Asset-backed Securities [Member]
Available-for-sale securities, amortized cost	7,312	1,926
Available-for-sale securities, fair value	7,324	1,923
Available-for-sale securities, amortized cost	180,654	43,677
Available-for-sale securities, fair value	$ 180,900	$ 43,616

Note 4 - Contractual Maturities

Note 4 - Contractual Maturities of Available-for-Sale Securities (Details) - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015
Due in one year or less	$ 139,785
Due in one year or less	139,854
Due between one and five years	40,869
Due between one and five years	41,046
Available-for-sale securities, cost	180,654
Available-for-sale securities, fair value	$ 180,900	$ 43,616

Note 5 - Inventories (Details T

Note 5 - Inventories (Details Textual) - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015
Other Inventory, Materials, Supplies and Merchandise under Consignment, Gross	$ 862	$ 1,435

Note 5 - Inventory (Details)

Note 5 - Inventory (Details) - USD ($)	Jun. 30, 2016	Dec. 31, 2015
Raw materials	$ 1,207,000	$ 2,491,000
Work in process	3,799,000	2,503,000
Finished goods	6,807,000	7,370,000
Total inventories	$ 11,813,000	$ 12,364,000

Note 6 - Property and Equipme44

Note 6 - Property and Equipment, Net (Details Textual) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015	Dec. 31, 2015
Depreciation	$ 4,086	$ 2,921	$ 7,638	$ 5,696
Capitalized Computer Software, Gross	6,384		6,384		$ 5,929
Capitalized Computer Software, Amortization	299	249	586	482
Property Plant and Equipment Not Yet Paid	1,975		1,975		$ 1,949
Disposal Group, Including Discontinued Operation, Depreciation and Amortization	$ 459	$ 390	$ 958	$ 853

Note 6 - Property and Equipme45

Note 6 - Property and Equipment Components (Details) - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015
Equipment [Member]
Property, plant and equipment, gross	$ 54,376	$ 46,875
Office, Software, and Computer Equipment [Member]
Property, plant and equipment, gross	20,514	18,556
Furniture and Fixtures [Member]
Property, plant and equipment, gross	1,301	1,264
Leasehold Improvements [Member]
Property, plant and equipment, gross	5,952	5,866
Property, plant and equipment, gross	82,143	72,561
Less accumulated depreciation	(46,583)	(38,937)
Total property and equipment	$ 35,560	$ 33,624

Note 7 - Identifiable Intangi46

Note 7 - Identifiable Intangible Assets (Details Textual) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
In Process Research and Development [Member] | Research and Development Expense [Member]
Impairment of Intangible Assets (Excluding Goodwill)	$ 1,750
Impairment of Intangible Assets (Excluding Goodwill)			$ 1,750

Note 7 - Identifiable Intangi47

Note 7 - Identifiable Intangible Assets (Details) - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015
Developed Technology Rights [Member]
Intangible assets, gross	$ 71,570	$ 71,570
Intangible assets, accumulated amortization	20,105	14,356
Intangible assets, net	51,465	57,214
Customer Relationships [Member]
Intangible assets, gross	8,170	8,170
Intangible assets, accumulated amortization	1,427	1,018
Intangible assets, net	6,743	7,152
Trade Names [Member]
Intangible assets, gross	920	920
Intangible assets, accumulated amortization	322	230
Intangible assets, net	598	690
Patents [Member]
Intangible assets, gross	1,579	1,579
Intangible assets, accumulated amortization	452	346
Intangible assets, net	1,127	1,233
Intangible assets, gross	82,239	82,239
Intangible assets, accumulated amortization	22,306	15,950
Intangible assets, net	$ 59,933	$ 66,289

Note 7 - Finite-lived Intangibl

Note 7 - Finite-lived Intangible Assets, Accumulated Amortization (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Cost of Sales [Member]
Cost of goods sold	$ 2,875	$ 2,875	$ 5,750	$ 5,750
Selling and Marketing Expense [Member]
Amortization of intangible assets	204	204	408	408
General and Administrative Expense [Member]
Amortization of intangible assets	99	106	198	213
Amortization of intangible assets	$ 3,178	$ 3,185	$ 6,356	$ 6,371

Note 7 - Amortization of Intang

Note 7 - Amortization of Intangible Assets, Future Amortization Expense (Details) - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015
2016 (remaining)	$ 6,350
2,017	12,682
2,018	12,648
2,019	11,078
2,020	6,394
Thereafter	10,781
Total amortization expense	$ 59,933	$ 66,289

Note 7 - Intangible Assets Weig

Note 7 - Intangible Assets Weighted-average Amortization Periods (Details)	6 Months Ended
	Jun. 30, 2016
Developed Technology Rights [Member]
Finite-lived intangible assets, remaining amortization period	4 years 317 days
Customer Relationships [Member]
Finite-lived intangible assets, remaining amortization period	8 years 91 days
Other Intangible Assets [Member]
Finite-lived intangible assets, remaining amortization period	9 years 237 days

Note 8 - Product Warranty Obl51

Note 8 - Product Warranty Obligation (Details Textual) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015	Dec. 31, 2015
Standard and Extended Product Warranty Accrual	$ 110,000		$ 110,000		$ 110,000
Standard and Extended Product Warranty Accrual, Period Increase (Decrease)	$ 0	$ 0	$ 0	$ 0

Note 9 - Convertible Debt (Deta

Note 9 - Convertible Debt (Details Textual) - Convertible Debt [Member] $ / shares in Units, $ in Thousands	1 Months Ended	3 Months Ended	6 Months Ended
	Dec. 31, 2015USD ($)$ / shares$ / item	Jun. 30, 2016USD ($)	Jun. 30, 2016USD ($)
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		$ 3,171	$ 6,303
Interest Expense, Debt, Excluding Amortization		521	1,276
Amortization of Debt Discount (Premium)		2,432	4,613
Amortization of Debt Issuance Costs		$ 218	$ 414
Capped Call, Aggregate Call Options Purchased, Percentage Related to Shares Underlying the Convertible Note	100.00%
Derivative, Cap Price | $ / item	52.06

Note 10 - Other Long-term Lia53

Note 10 - Other Long-term Liabilities (Details) - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015
Deferred rent	$ 1,348	$ 1,728
Income tax payable	1,589	6,969
Total other long-term liabilities	$ 2,937	$ 8,697

Note 11 - Income Taxes (Details

Note 11 - Income Taxes (Details Textual) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Income Tax Expense (Benefit)	$ 303	$ (869)	$ (29)	$ 1,869
Effective Income Tax Rate Reconciliation, Percent	24.00%	61.00%	4.00%	19.00%
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent	34.00%	34.00%	34.00%	34.00%
Unrecognized Tax Benefits, Increase Resulting from Current Period Tax Positions	$ 296
Unrecognized Tax Benefits, Decrease Resulting from Current Period Tax Positions			$ 1,588
Decrease in Unrecognized Tax Benefits is Reasonably Possible	$ 100		$ 100

Note 12 - Earnings Per Share (D

Note 12 - Earnings Per Share (Details Textual) - shares	3 Months Ended	6 Months Ended
	Jun. 30, 2016	Jun. 30, 2016
Adoption of ASU 2016-09 [Member]
Weighted Average Number Diluted Shares Outstanding Adjustment	969,985	971,547

Note 12 - Computation of Basic

Note 12 - Computation of Basic and Diluted Earnings Per Share (Details) - shares	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Basic (in shares)	40,412,319	38,431,307	40,085,260	38,065,942
Effect of potentially dilutive securities:
Add options to purchase common stock (in shares)	1,324,796		1,327,237
Add unvested restricted stock unit (in shares)	2,101,373		2,234,865
Add employee stock purchase plan (in shares)			32,955
Weighted-average common stock—diluted (in shares)	43,838,488	38,431,307	43,680,317	38,065,942

Note 12 - Securities Not Includ

Note 12 - Securities Not Included in Computation of Earnings Per Share (Details) - shares	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Employee Stock Option [Member]
Anti-dilutive securities (in shares)		2,615,744		2,774,985
Restricted Stock Units (RSUs) [Member]
Anti-dilutive securities (in shares)	939,346	4,856,581	479,679	4,652,690
Convertible Debt Securities [Member]
Anti-dilutive securities (in shares)	5,727,092		5,727,092
Anti-dilutive securities (in shares)	6,666,438	7,472,325	6,206,771	7,427,675

Note 13 - Stock-based Compens58

Note 13 - Stock-based Compensation (Details Textual) - USD ($) $ in Thousands	1 Months Ended	3 Months Ended	6 Months Ended
	Dec. 31, 2011	Jun. 30, 2016	Jun. 30, 2016	Jun. 30, 2015	Dec. 31, 2015
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			1,205,465
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number		4,492,888	4,492,888		4,600,869
Performance Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period		31,786	31,786
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number		300,356	300,356
Employee Stock Purchase Plan [Member]
Maximum Percentage of Aggregate Cash Compensation for Purchase of Stock Using Payroll Deduction	15.00%
Look Back Period of Employee Stock Purchase Plan	180 days
Purchase Price PerShare as Percentage of Market Value	85.00%
Percentage of Combined Voting Power or Value of All Classes of Stock Not Eligible to Participate	5.00%
Fair Value of Common Stock in Calendar Year per Employee Not Eligible to Participate	$ 25
Maximum Aggregate Number of Shares of Common Stock Available for Purchase under Employee Stock Purchase Plan			1,750,000
Adoption of ASU 2016-09 [Member] | Adjustments to Beginning Retained Earnings Balance [Member]
Cumulative Effect of New Accounting Principle in Period of Adoption		$ 5,261	$ 5,261
Adoption of ASU 2016-09 [Member] | Adjustments of Excess Tax Benefit Related to Share-based Compensation from Operating to Financing Activities [Member] | Six Months Ended June 30, 2015 [Member]
Prior Period Reclassification Adjustment				$ 829
Adoption of ASU 2016-09 [Member]
Weighted Average Number Diluted Shares Outstanding Adjustment		969,985	971,547
Common Stock, Capital Shares Reserved for Future Issuance		2,889,858	2,889,858
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross			0	0
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Intrinsic Value			$ 6,855	$ 7,971
Proceeds from Stock Options Exercised			$ 2,607	$ 4,469
Stock Issued During Period, Shares, Employee Stock Purchase Plans			164,696	160,776
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized		$ 79,366	$ 79,366
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition			2 years 346 days

Note 13 - Information Regarding

Note 13 - Information Regarding Options Outstanding (Details) - USD ($) $ / shares in Units, $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 30, 2016	Dec. 31, 2015
Number of shares outstanding (in shares)	2,256,396
Number of shares outstanding, weighted-average exercise price (in dollars per share)	$ 10.61
Number of shares outstanding, weighted-average remaining contractual life	4 years 306 days	5 years 105 days
Number of shares outstanding, aggregate intrinsic value	$ 41,159	$ 37,036
Number of shares exercised (in shares)	(311,985)
Number of shares exercised, weighted-average exercise price (in dollars per share)	$ 9.25
Number of shares cancelled (in shares)	(3,167)
Number of shares outstanding (in shares)	1,941,244	2,256,396
Number of shares outstanding, weighted-average exercise price (in dollars per share)	$ 10.83	$ 10.61
Number of shares exercisble (in shares)	1,897,477
Number of shares exercisble, weighted-average exercise price (in dollars per share)	$ 10.84
Number of shares exercisble, weighted-average remaining contractual life	4 years 288 days
Number of shares exercisable, aggregate intrinsic value	$ 40,207
Number of shares vested and expected to vest in the future (in shares)	1,941,021
Number of shares vested and expected to vest in the future, weighted-average exercise price (in dollars per share)	$ 10.83
Number of shares vested and expected to vest in the future, weighted-average remaining contractual life	4 years 306 days
Number of shares vested and expected to vest in the future, aggregate intrinsic value	$ 41,155

Note 13 - Information Regardi60

Note 13 - Information Regarding Outstanding Restricted Stock Units (Details) - $ / shares	6 Months Ended
	Jun. 30, 2016
Restricted Stock Units (RSUs) [Member]
Number of restricted stock units outstanding (in shares)	4,600,869
Number of restricted stock units outstanding, weighted-average grant date fair value per share (in dollars per share)	$ 15.37
Number of restricted stock units granted (in shares)	1,394,799
Number of restricted stock units granted, weighted-average grant date fair value per share (in dollars per share)	$ 32.68
Number of restricted stock units vested (in shares)	(1,205,465)
Number of restricted stock units vested, weighted-average grant date fair value per share (in dollars per share)	$ 14.31
Number of restricted stock units cancelled (in shares)	(297,315)
Number of restricted stock units cancelled, weighted-average grant date fair value per share (in dollars per share)	$ 17.38
Number of restricted stock units outstanding (in shares)	4,492,888
Number of restricted stock units outstanding, weighted-average grant date fair value per share (in dollars per share)	$ 20.89
Number of restricted stock units expected to vest in the future (in shares)	4,378,136

Note 13 - Fair Value of Employe

Note 13 - Fair Value of Employee Stock Purchase Plan (Details) - Employee Stock Purchase Plan [Member] - $ / shares	6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015
Risk-free interest rate	0.45%	0.07%
Expected life (in years)	182 days	182 days
Expected volatility	55.00%	41.00%
Estimated fair value (in dollars per share)	$ 7.26	$ 5.34

Note 13 - Stock-based Compens62

Note 13 - Stock-based Compensation Expense (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Cost of Sales [Member]
Stock-based compensation	$ 426	$ 358	$ 761	$ 696
Research and Development Expense [Member]
Stock-based compensation	4,684	3,510	8,398	6,546
Selling and Marketing Expense [Member]
Stock-based compensation	952	884	1,728	1,641
General and Administrative Expense [Member]
Stock-based compensation	662	1,375	1,835	2,621
Net income (Loss) from Discontinued Operations [Member]
Stock-based compensation	1,056	1,075	2,010	2,118
Stock-based compensation	$ 7,780	$ 7,202	$ 14,732	$ 13,622

Note 14 - Information about Ass

Note 14 - Information about Assets and Liabilities Required to be Carried at Fair Value on Recurring Basis (Details) - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015
Money Market Funds [Member] | Fair Value, Inputs, Level 1 [Member]
Cash equivalents	$ 20,967
Money Market Funds [Member] | Fair Value, Inputs, Level 2 [Member]
Cash equivalents	64,498	$ 102,008
Money Market Funds [Member]
Cash equivalents	85,465	102,008
US Treasury Securities [Member] | Fair Value, Inputs, Level 1 [Member]
Investment in marketable securities	6,012	2,993
US Treasury Securities [Member]
Investment in marketable securities	6,012	2,993
Municipal Bonds [Member] | Fair Value, Inputs, Level 2 [Member]
Investment in marketable securities	28,239	20,036
Municipal Bonds [Member]
Investment in marketable securities	28,239	20,036
Corporate Debt Securities [Member] | Fair Value, Inputs, Level 2 [Member]
Investment in marketable securities	109,340	14,657
Corporate Debt Securities [Member]
Investment in marketable securities	109,340	14,657
US Government Agencies Debt Securities [Member] | Fair Value, Inputs, Level 2 [Member]
Investment in marketable securities	6,444	4,007
US Government Agencies Debt Securities [Member]
Investment in marketable securities	6,444	4,007
Commercial Paper [Member] | Fair Value, Inputs, Level 2 [Member]
Investment in marketable securities	23,541
Commercial Paper [Member]
Investment in marketable securities	23,541
Asset-backed Securities [Member] | Fair Value, Inputs, Level 2 [Member]
Investment in marketable securities	7,324	1,923
Asset-backed Securities [Member]
Investment in marketable securities	7,324	1,923
Fair Value, Inputs, Level 1 [Member]
Total fair value of assets	26,979	2,993
Fair Value, Inputs, Level 2 [Member]
Total fair value of assets	239,386	142,631
Convertible Notes	243,253	221,950
Total fair value of assets	266,365	145,624
Convertible Notes	$ 243,253	$ 221,950

Note 15 - Segment and Geograp64

Note 15 - Segment and Geographic Information (Details Textual) $ in Thousands	6 Months Ended
	Jun. 30, 2016USD ($)	Dec. 31, 2015USD ($)
Outside the United States [Member]
Long Lived Tangible Assets Located Outside Country	$ 6,079	$ 5,054
TAIWAN, PROVINCE OF CHINA
Long Lived Tangible Assets Located Outside Country	$ 5,441	$ 4,372
Number of Reportable Segments	1

Note 15 - Revenue by Geographic

Note 15 - Revenue by Geographic Region (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
CHINA
Revenue by geographic region	$ 19,947	$ 15,291	$ 40,514	$ 29,818
UNITED STATES
Revenue by geographic region	6,495	8,840	14,467	16,262
THAILAND
Revenue by geographic region	10,974	9,462	16,652	14,925
JAPAN
Revenue by geographic region	8,717	5,523	15,842	10,731
Other Country [Member]
Revenue by geographic region	14,391	10,397	27,140	20,723
Revenue by geographic region	$ 60,524	$ 49,513	$ 114,615	$ 92,459

Note 16 - Commitments and Con66

Note 16 - Commitments and Contingencies (Details Textual) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015	Dec. 31, 2015
Estimated Litigation Liability	$ 0		$ 0		$ 0
Operating Leases, Rent Expense, Net	3,811,000	$ 2,974,000	6,094,000	$ 6,017,000
Value of Open Purchase Orders	$ 9,394,000		$ 9,394,000

Note 16 - Future Minimum Lease

Note 16 - Future Minimum Lease Payments Under Noncancelable Operating Leases (Details) $ in Thousands	Jun. 30, 2016USD ($)
2016 (remaining)	$ 8,118
2,017	4,539
2,018	2,190
2,019	1,713
2020 and thereafter	288
Total future minimum lease payments	$ 16,848