Monolithic Power Systems (MPWR) 10-Q 8 Nov 21 2021 Q3 Quarterly report Financial data

Document And Entity Information

Document And Entity Information - shares	9 Months Ended
	Sep. 30, 2021	Nov. 01, 2021
Document Information [Line Items]
Entity Central Index Key	0001280452
Entity Registrant Name	MONOLITHIC POWER SYSTEMS INC
Amendment Flag	false
Current Fiscal Year End Date	--12-31
Document Fiscal Period Focus	Q3
Document Fiscal Year Focus	2021
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Sep. 30, 2021
Document Transition Report	false
Entity File Number	000-51026
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	77-0466789
Entity Address, Address Line One	5808 Lake Washington Blvd. NE
Entity Address, City or Town	Kirkland
Entity Address, State or Province	WA
Entity Address, Postal Zip Code	98033
City Area Code	425
Local Phone Number	296-9956
Title of 12(b) Security	Common Stock, par value $0.001 per share
Trading Symbol	MPWR
Security Exchange Name	NASDAQ
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		46,093,000

Condensed Consolidated Balance

Condensed Consolidated Balance Sheets (Current Period Unaudited) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Current assets:
Cash and cash equivalents	$ 226,091	$ 334,944
Short-term investments	515,947	260,169
Accounts receivable, net	79,859	66,843
Inventories	208,062	157,062
Other current assets	34,535	22,980
Total current assets	1,064,494	841,998
Property and equipment, net	340,060	281,528
Goodwill	6,571	6,571
Deferred tax assets, net	17,726	18,556
Other long-term assets	67,050	59,838
Total assets	1,495,901	1,208,491
Current liabilities:
Accounts payable	72,092	38,169
Accrued compensation and related benefits	75,815	45,840
Other accrued liabilities	79,756	62,960
Total current liabilities	227,663	146,969
Income tax liabilities	41,019	37,062
Other long-term liabilities	64,506	57,873
Total liabilities	333,188	241,904
Commitments and contingencies
Stockholders’ equity:
Common stock and additional paid-in capital: $0.001 par value; shares authorized: 150,000; shares issued and outstanding: 46,091 and 45,267, respectively	769,858	657,701
Retained earnings	381,193	298,746
Accumulated other comprehensive income	11,662	10,140
Total stockholders’ equity	1,162,713	966,587
Total liabilities and stockholders’ equity	$ 1,495,901	$ 1,208,491

Condensed Consolidated Balanc_2

Condensed Consolidated Balance Sheets (Current Period Unaudited) (Parentheticals) - $ / shares shares in Thousands	Sep. 30, 2021	Dec. 31, 2020
Common stock, par value (in dollars per share)	$ 0.001	$ 0.001
Common stock, shares authorized (in shares)	150,000	150,000
Common stock, shares issued (in shares)	46,091	45,267
Common stock, shares outstanding (in shares)	46,091	45,267

Condensed Consolidated Statemen

Condensed Consolidated Statements of Operations (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Revenue	$ 323,522	$ 259,422	$ 871,294	$ 611,409
Cost of revenue	137,211	116,382	379,709	274,329
Gross profit	186,311	143,040	491,585	337,080
Operating expenses:
Research and development	49,468	37,717	136,113	95,346
Selling, general and administrative	56,291	43,503	164,982	116,550
Litigation expense	3,421	1,841	6,645	6,264
Total operating expenses	109,180	83,061	307,740	218,160
Income from operations	77,131	59,979	183,845	118,920
Other income, net	793	2,494	6,411	5,980
Income before income taxes	77,924	62,473	190,256	124,900
Income tax expense	9,154	6,907	20,904	3,412
Net income	$ 68,770	$ 55,566	$ 169,352	$ 121,488
Net income per share
Basic (in dollars per share)	$ 1.50	$ 1.24	$ 3.70	$ 2.72
Diluted (in dollars per share)	$ 1.44	$ 1.18	$ 3.55	$ 2.59
Weighted-average shares outstanding:
Basic (in shares)	45,970	44,970	45,754	44,737
Diluted (in shares)	47,852	46,955	47,772	46,819

Condensed Consolidated Statem_2

Condensed Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Net income	$ 68,770	$ 55,566	$ 169,352	$ 121,488
Other comprehensive income (loss), net of tax:
Foreign currency translation adjustments	(371)	6,936	2,592	5,072
Change in unrealized gain (loss) on available-for-sale securities, net of tax of $32, $30, $177 and $(321), respectively	(268)	(368)	(1,070)	2,888
Other comprehensive income (loss), net of tax	(639)	6,568	1,522	7,960
Comprehensive income	$ 68,131	$ 62,134	$ 170,874	$ 129,448

Condensed Consolidated Statem_3

Condensed Consolidated Statements of Comprehensive Income (Unaudited) (Parentheticals) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Change in unrealized gain (loss) on available-for-sale securities, tax	$ 32	$ 30	$ 177	$ (321)

Condensed Consolidated Statem_4

Condensed Consolidated Statements of Stockholders' Equity (Unaudited) - USD ($) shares in Thousands, $ in Thousands	Common Stock Including Additional Paid in Capital [Member]	Retained Earnings [Member]	AOCI Attributable to Parent [Member]	Total
Balance (in shares) at Dec. 31, 2019	43,616
Balance at Dec. 31, 2019	$ 549,517	$ 229,450	$ (5,476)	$ 773,491
Net income	0	121,488	0	121,488
Other comprehensive loss	0	0	7,960	7,960
Dividends and dividend equivalents declared	$ 0	(71,285)	0	(71,285)
Common stock issued under the employee equity incentive plan (in shares)	1,452
Common stock issued under the employee equity incentive plan	$ 16,457	0	0	16,457
Common stock issued under the employee stock purchase plan (in shares)	28
Common stock issued under the employee stock purchase plan	$ 3,819	0	0	3,819
Stock-based compensation expense	$ 62,639	0	0	62,639
Balance (in shares) at Sep. 30, 2020	45,096
Balance at Sep. 30, 2020	$ 632,432	279,653	2,484	914,569
Balance (in shares) at Jun. 30, 2020	44,911
Balance at Jun. 30, 2020	$ 605,165	247,864	(4,084)	848,945
Net income	0	55,566	0	55,566
Other comprehensive loss	0	0	6,568	6,568
Dividends and dividend equivalents declared	$ 0	(23,777)	0	(23,777)
Common stock issued under the employee equity incentive plan (in shares)	173
Common stock issued under the employee equity incentive plan	$ 2,347	0	0	2,347
Common stock issued under the employee stock purchase plan (in shares)	12
Common stock issued under the employee stock purchase plan	$ 1,927	0	0	1,927
Stock-based compensation expense	$ 22,993	0	0	22,993
Balance (in shares) at Sep. 30, 2020	45,096
Balance at Sep. 30, 2020	$ 632,432	279,653	2,484	$ 914,569
Balance (in shares) at Dec. 31, 2020	45,267			45,267
Balance at Dec. 31, 2020	$ 657,701	298,746	10,140	$ 966,587
Net income	0	169,352	0	169,352
Other comprehensive loss	0	0	1,522	1,522
Dividends and dividend equivalents declared	$ 0	(86,905)	0	(86,905)
Common stock issued under the employee equity incentive plan (in shares)	807
Common stock issued under the employee equity incentive plan	$ 15,147	0	0	15,147
Common stock issued under the employee stock purchase plan (in shares)	17
Common stock issued under the employee stock purchase plan	$ 4,670	0	0	4,670
Stock-based compensation expense	$ 92,340	0	0	$ 92,340
Balance (in shares) at Sep. 30, 2021	46,091			46,091
Balance at Sep. 30, 2021	$ 769,858	381,193	11,662	$ 1,162,713
Balance (in shares) at Jun. 30, 2021	45,917
Balance at Jun. 30, 2021	$ 733,672	341,382	12,301	1,087,355
Net income	0	68,770	0	68,770
Other comprehensive loss	0	0	(639)	(639)
Dividends and dividend equivalents declared	$ 0	(28,959)	0	(28,959)
Common stock issued under the employee equity incentive plan (in shares)	167
Common stock issued under the employee equity incentive plan	$ 2,227	0	0	2,227
Common stock issued under the employee stock purchase plan (in shares)	7
Common stock issued under the employee stock purchase plan	$ 2,377	0	0	2,377
Stock-based compensation expense	$ 31,582	0	0	$ 31,582
Balance (in shares) at Sep. 30, 2021	46,091			46,091
Balance at Sep. 30, 2021	$ 769,858	$ 381,193	$ 11,662	$ 1,162,713

Condensed Consolidated Statem_5

Condensed Consolidated Statements of Stockholders' Equity (Unaudited) (Parentheticals) - $ / shares	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Dividends and dividend equivalents declared per share (in dollars per share)	$ 0.60	$ 0.50	$ 1.80	$ 1.50

Condensed Consolidated Statem_6

Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020
Cash flows from operating activities:
Net income	$ 169,352	$ 121,488
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	20,376	13,785
Amortization of premium on available-for-sale securities	3,231	1,984
Gain on deferred compensation plan investments	(2,640)	(1,420)
Deferred taxes, net	1,004	3,400
Stock-based compensation expense	92,282	62,581
Other	(8)	15
Changes in operating assets and liabilities:
Accounts receivable	(13,033)	(40,826)
Inventories	(50,968)	(20,533)
Other assets	(14,051)	(6,376)
Accounts payable	30,032	19,811
Accrued compensation and related benefits	30,030	21,780
Income tax liabilities	4,088	(1,805)
Other accrued liabilities	22,109	14,271
Net cash provided by operating activities	291,804	188,155
Cash flows from investing activities:
Purchases of property and equipment	(76,849)	(44,129)
Purchases of short-term investments	(354,171)	(270,797)
Proceeds from maturities and sales of short-term investments	94,192	182,355
Proceeds from sales of long-term investments	400	250
Contributions to deferred compensation plan, net	(1,917)	(1,116)
Purchases of intangible assets	(793)	0
Net cash used in investing activities	(339,138)	(133,437)
Cash flows from financing activities:
Property and equipment purchased on extended payment terms	(2,049)	(4,437)
Proceeds from common stock issued under the employee equity incentive plan	15,147	16,457
Proceeds from common stock issued under the employee stock purchase plan	4,670	3,819
Dividends and dividend equivalents paid	(80,725)	(65,477)
Net cash used in financing activities	(62,957)	(49,638)
Effect of change in exchange rates	1,431	1,432
Net increase (decrease) in cash, cash equivalents and restricted cash	(108,860)	6,512
Cash, cash equivalents and restricted cash, beginning of period	335,071	173,076
Cash, cash equivalents and restricted cash, end of period	226,211	179,588
Supplemental disclosures for cash flow information:
Cash paid for taxes	16,217	1,036
Non-cash investing and financing activities:
Liability accrued for property and equipment purchases	7,144	9,355
Liability accrued for dividends and dividend equivalents	$ 31,911	$ 26,429

Note 1 - Basis of Presentation

Note 1 - Basis of Presentation	9 Months Ended
	Sep. 30, 2021
Notes to Financial Statements
Significant Accounting Policies [Text Block]	1. The accompanying unaudited condensed consolidated financial statements have been prepared by Monolithic Power Systems, Inc. (the “Company” or “MPS”) in accordance with the rules and regulations of the Securities and Exchange Commission (the “SEC”). Certain information and disclosures normally included in financial statements prepared in accordance with accounting principles generally accepted in the United States (“GAAP”) have been condensed or omitted in accordance with these accounting principles, rules and regulations. The information in this report should be read in conjunction with the Company’s audited consolidated financial statements and notes thereto included in the Annual Report on Form 10 December 31, 2020, March 1, 2021. In the opinion of management, the accompanying unaudited condensed consolidated financial statements reflect all adjustments (consisting only of normal recurring adjustments) necessary to present fairly the Company’s financial position, results of operations and cash flows for the interim periods presented. The financial statements contained in this Quarterly Report on Form 10 not may December 31, 2021 Use of Estimates The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements, and reported amounts of revenue and expenses during the reporting period. Significant estimates and assumptions used in these condensed consolidated financial statements primarily include those related to revenue recognition, inventory valuation, valuation of share-based awards, contingencies and income tax valuation allowances. Actual results could differ from these estimates and assumptions, and any such differences may The COVID- 19 not three nine September 30, 2021. not 19 10 December 31, 2020 . Recently Adopted Accounting Pronouncement In December 2019, No. 2019 12, Income Taxes (Topic 740 December 15, 2020. first 2021 not

Note 2 - Revenue Recognition

Note 2 - Revenue Recognition	9 Months Ended
	Sep. 30, 2021
Notes to Financial Statements
Revenue from Contract with Customer [Text Block]	2. REVENUE RECOGNITION Revenue from Product Sales The Company generates revenue primarily from product sales, which include assembled and tested integrated circuits (“ICs”), as well as dies in wafer form. These product sales accounted for 96% and 97% of the Company’s total revenue for the three September 30, 2021 2020 , nine September 30, 2021 2020, third not 7 The Company sells its products primarily through third three September 30, 2021 2020, nine September 30, 2021 2020, not The Company recognizes revenue when it satisfies a performance obligation by transferring control of the promised goods or services to its customers, in an amount that reflects the consideration the Company expects to be entitled to in exchange for those goods or services. The Company excludes taxes assessed by government authorities, such as sales taxes, from revenue. Product sales consist of a single performance obligation that the Company satisfies at a point in time. The Company recognizes product revenue from distributors and direct end customers when the following events have occurred: (a) the Company has transferred physical possession of the products, (b) the Company has a present right to payment, (c) the customer has legal title to the products, and (d) the customer bears significant risks and rewards of ownership of the products. In accordance with the shipping terms specified in the contracts, these criteria are generally met when the products are shipped from the Company’s facilities (such as the “Ex Works” shipping term) or delivered to the customers’ locations (such as the “Delivered Duty Paid” shipping term). Under certain consignment agreements, revenue is not not Variable Consideration The Company accounts for price adjustment and stock rotation rights as variable consideration that reduces the transaction price and recognizes that reduction in the same period the associated revenue is recognized. Four U.S.-based distributors have price adjustment rights when they sell the Company’s products to their end customers at a price that is lower than the distribution price invoiced by the Company. When the Company receives claims from the distributors that products have been sold to the end customers at the lower price, the Company issues the distributors credit memos for the price adjustments. The Company estimates the price adjustments using the expected value method based on an analysis of historical claims, at both the distributor and product level, as well as an assessment of any known trends of product sales mix. Other U.S. distributors and non-U.S. distributors, which make up the majority of the Company’s total sales to distributors, do not Certain distributors have limited stock rotation rights that permit the return of a small percentage of the previous six Contract Balances Accounts Receivable: The Company records a receivable when it has an unconditional right to receive consideration after the performance obligations are satisfied. As of September 30, 2021 December 31, 2020 , 30 90 not may not September 30, 2021 December 31, 2020 , not Contract Liabilities: For certain customers located in Asia, the Company requires cash payments two September 30, 2021 December 31, 2020 , nine September 30, 2021 nine September 30, 2021 , December 31, 2020 . Practical Expedients The Company has elected the practical expedient to expense sales commissions as incurred because the amortization period would have been one The Company’s standard payment terms generally require customers to pay 30 to 90 days after the Company satisfies the performance obligations. For those customers who are required to pay in advance, the Company satisfies the performance obligations generally within a quarter. The Company has elected not The Company’s unsatisfied performance obligations primarily include products held in consignment arrangements and customer purchase orders for products that the Company has not one not

Note 3 - Stock-based Compensati

Note 3 - Stock-based Compensation	9 Months Ended
	Sep. 30, 2021
Notes to Financial Statements
Share-based Payment Arrangement [Text Block]	3. 2014 In April 2013 , 2014 “2014 June 2013 . October 2014 , 2014 2014 November 13, 2014 April 2020 , 2014 2014 June 2020 . 2014 June 11, 2020 2014 June 11, 2030 . September 30, 2021 , 2014 Stock-Based Compensation Expense The Company recognized stock-based compensation expenses as follows (in thousands): Three Months Ended September 30, Nine Months Ended September 30, 2021 2020 2021 2020 Cost of revenue $ 922 $ 707 $ 2,622 $ 1,906 Research and development 6,646 5,334 19,564 14,666 Selling, general and administrative 24,004 16,934 70,096 46,009 Total stock-based compensation expense $ 31,572 $ 22,975 $ 92,282 $ 62,581 Tax benefit related to stock-based compensation (1) $ 488 $ 512 $ 1,299 $ 1,450 ( 1 Amount reflects the tax benefit related to stock-based compensation recorded for equity awards that are expected to generate tax deductions when they vest in future periods. Restricted Stock Units ( RSUs ) The Company’s RSUs include time-based RSUs, RSUs with performance conditions (“PSUs”), RSUs with market conditions (“MSUs”), and RSUs with both market and performance conditions (“MPSUs”). Vesting of awards with performance conditions or market conditions is subject to the achievement of pre-determined performance goals and the approval of such achievement by the Compensation Committee of the Board of Directors (the “Compensation Committee”). All awards include service conditions which require continued employment with the Company. A summary of RSU activity is presented in the table below (in thousands, except per-share amounts): Time-Based RSUs PSUs and MPSUs MSUs Total Number of Shares Weighted- Average Grant Date Fair Value Per Share Number of Shares Weighted- Average Grant Date Fair Value Per Share Number of Shares Weighted- Average Grant Date Fair Value Per Share Number of Shares Weighted- Average Grant Date Fair Value Per Share Outstanding at January 1, 2021 161 $ 151.62 1,390 $ 132.60 1,554 $ 40.40 3,105 $ 87.42 Granted 43 $ 375.33 365 (1) $ 352.37 - $ - 408 $ 354.79 Vested (60 ) $ 142.13 (504 ) $ 91.73 (243 ) $ 23.57 (807 ) $ 74.95 Forfeited (9 ) $ 199.05 (12 ) $ 100.25 (9 ) $ 68.48 (30 ) $ 118.31 Outstanding at September 30, 2021 135 $ 223.71 1,239 $ 214.52 1,302 $ 43.33 2,676 $ 131.68 ( 1 Amount reflects the number of awards that may The intrinsic value related to vested RSUs was $76.8 million and $45.9 million for the three September 30, 2021 2020, nine September 30, 2021 2020, September 30, 2021, September 30, 2021, two Cash proceeds from vested PSUs with a purchase price requirement totaled $15.1 million and $16.5 million for the nine September 30, 2021 2020, Time-Based RSUs: For the nine September 30, 2021, four one 2021 In February 2021 , two “2021 first 2021 two 2021 2022 two 2021 first 2023 2021 two second 100% 2021 December 31, 2023. 2021 no December 31, 2022. one 2021 In February 2021 , 2022 two 2021 2022 two “2021 2021 2021 first 2023 2021 two 2021 The 2021 2021 $30 20 December 31, 2022 $30 third 2021. 2021 2021 4.0 2021 2004 ESPP ) For the three September 30, 2021 2020, nine September 30, 2021 2020, September 30, 2021, The intrinsic value of the shares issued was $1.0 million and $1.5 million for the three September 30, 2021 2020, nine September 30, 2021 2020, September 30, 2021, first 2022. Three Months Ended September 30, Nine Months Ended September 30, 2021 2020 2021 2020 Expected term (in years) 0.5 0.5 0.5 0.5 Expected volatility 43.0 % 66.4 % 43.2 % 48.9 % Risk-free interest rate 0.1 % 0.1 % 0.1 % 0.8 % Dividend yield 0.5 % 0.7 % 0.6 % 0.9 % Cash proceeds from the shares issued under the ESPP were $4.7 million and $3.8 million for the nine September 30, 2021 2020,

Note 4 - Balance Sheet Componen

Note 4 - Balance Sheet Components	9 Months Ended
	Sep. 30, 2021
Notes to Financial Statements
Supplemental Balance Sheet Disclosures [Text Block]	4. Inventories Inventories consist of the following (in thousands): September 30, December 31, 2021 2020 Raw materials $ 17,254 $ 25,503 Work in process 112,922 77,100 Finished goods 77,886 54,459 Total $ 208,062 $ 157,062 Other Current Assets Other current assets consist of the following (in thousands): September 30, December 31, 2021 2020 RSU tax withholding proceeds receivable $ 16,075 $ 12,504 Prepaid expense 10,638 5,032 Accrued interest receivable 4,094 1,914 Assets for product returns 2,059 1,684 Other 1,669 1,846 Total $ 34,535 $ 22,980 Other Long-Term Assets Other long-term assets consist of the following (in thousands): September 30, December 31, 2021 2020 Deferred compensation plan assets $ 50,641 $ 46,146 Operating lease right-of-use (“ROU”) assets 6,292 3,719 Prepaid expense 2,256 2,340 Debt investment 2,501 2,861 Equity investment in a privately held company 3,215 3,400 Other 2,145 1,372 Total $ 67,050 $ 59,838 Other Accrued Liabilities Other accrued liabilities consist of the following (in thousands): September 30, December 31, 2021 2020 Dividends and dividend equivalents $ 32,044 $ 26,435 Stock rotation and sales returns 7,695 6,005 Accrued purchases of property and equipment 1,033 5,841 Income tax payable 3,884 3,755 Customer prepayments 6,690 7,238 Commissions 1,347 1,107 Operating lease liabilities 2,425 1,406 Warranty 17,776 6,895 Other 6,862 4,278 Total $ 79,756 $ 62,960 Other Long-Term Liabilities Other long-term liabilities consist of the following (in thousands): September 30, December 31, 2021 2020 Deferred compensation plan liabilities $ 52,707 $ 48,280 Dividend equivalents 8,444 7,871 Operating lease liabilities 3,355 1,693 Other - 29 Total $ 64,506 $ 57,873

Note 5 - Leases

Note 5 - Leases	9 Months Ended
	Sep. 30, 2021
Notes to Financial Statements
Leases Disclosure [Text Block]	5. Lessee The Company has operating leases primarily for administrative and sales and marketing offices, manufacturing operations and research and development facilities, employee housing units and certain equipment. These leases have remaining lease terms from less than a year to five two not As of September 30, 2021 December 31, 2020 , September 30, 2021 December 31, 2020 , Three Months Ended September 30, Nine Months Ended September 30, 2021 2020 2021 2020 Lease costs: Operating lease costs $ 623 $ 364 $ 1,694 $ 1,093 Other 140 87 387 235 Total lease costs $ 763 $ 451 $ 2,081 $ 1,328 Three Months Ended September 30, Nine Months Ended September 30, 2021 2020 2021 2020 Cash paid for amounts included in the measurement of lease liabilities: Operating cash flows from operating leases $ 612 $ 394 $ 1,622 $ 1,097 ROU assets obtained in exchange for new operating lease liabilities $ 793 $ - $ 4,477 $ 1,796 September 30, December 31, 2021 2020 Weighted-average remaining lease term (in years) 3.0 2.7 Weighted-average discount rate 2.1 % 2.7 % As of September 30, 2021, 2021 (remaining three months) $ 664 2022 2,342 2023 1,505 2024 834 2025 645 Thereafter 8 Total remaining lease payments 5,998 Less: imputed interest (218 ) Total lease liabilities $ 5,780 Reported as: Current liabilities $ 2,425 Long-term liabilities $ 3,355 As of September 30, 2021 , not fourth 2021 two five Lessor The Company owns certain office buildings and leases a portion of these properties to third one five five For the three September 30, 2021 2020, nine September 30, 2021 2020, September 30, 2021, 2021 (remaining three months) $ 594 2022 2,293 2023 1,621 2024 631 2025 110 Thereafter 21 Total $ 5,270

Note 6 - Net Income Per Share

Note 6 - Net Income Per Share	9 Months Ended
	Sep. 30, 2021
Notes to Financial Statements
Earnings Per Share [Text Block]	6. Basic net income per share is computed by dividing net income by the weighted-average number of common shares outstanding for the period. Diluted net income per share reflects the potential dilution that would occur if outstanding securities or other contracts to issue common stock were exercised or converted into common shares, and calculated using the treasury stock method. Contingently issuable shares, including equity awards with performance conditions or market conditions, are considered outstanding common shares and included in the basic net income per share as of the date that all necessary conditions to earn the awards have been satisfied. Prior to the end of the contingency period, the number of contingently issuable shares included in the diluted net income per share is based on the number of shares, if any, that would be issuable under the terms of the arrangement at the end of the reporting period. The Company’s RSUs contain forfeitable rights to receive cash dividend equivalents, which are accumulated and paid to the employees when the underlying RSUs vest. Dividend equivalents accumulated on the underlying RSUs are forfeited if the employees do not not not The following table sets forth the computation of basic and diluted net income per share (in thousands, except per-share amounts): Three Months Ended September 30, Nine Months Ended September 30, 2021 2020 2021 2020 Numerator: Net income $ 68,770 $ 55,566 $ 169,352 $ 121,488 Denominator: Weighted-average outstanding shares - basic 45,970 44,970 45,754 44,737 Effect of dilutive securities 1,882 1,985 2,018 2,082 Weighted-average outstanding shares - diluted 47,852 46,955 47,772 46,819 Net income per share: Basic $ 1.50 $ 1.24 $ 3.70 $ 2.72 Diluted $ 1.44 $ 1.18 $ 3.55 $ 2.59 Anti-dilutive common stock equivalents were not

Note 7 - Segment, Significant C

Note 7 - Segment, Significant Customers and Geographic Information	9 Months Ended
	Sep. 30, 2021
Notes to Financial Statements
Segment Reporting Disclosure [Text Block]	7. The Company operates in one reportable segment that includes the design, development, marketing and sale of high-performance, semiconductor-based power electronics solutions for the computing and storage, automotive, industrial, communications and consumer markets. The Company’s chief operating decision maker is its Chief Executive Officer, who reviews financial information presented on a consolidated basis for purposes of allocating resources and evaluating financial performance. The Company derives a majority of its revenue from sales to customers located outside North America, with geographic revenue based on the customers’ ship-to locations. The Company sells its products primarily through third 10% Three Months Ended September 30, Nine Months Ended September 30, Customer 2021 2020 2021 2020 Distributor A 24 % 22 % 26 % 23 % Distributor B 15 % 11 % 16 % * Distributor C 12 % * * * Direct customer A * 14 % * 11 % * Represents less than 10%. The Company’s agreements with these third may may not The following table summarizes those customers with accounts receivable equal to 10% September 30, December 31, Customer 2021 2020 Distributor A 17 % 24 % Distributor B 18 % 21 % Value-added reseller A 15 % 13 % Direct customer A * 10 % * Represents less than 10%. The following is a summary of revenue by geographic regions (in thousands): Three Months Ended September 30, Nine Months Ended September 30, Country or Region 2021 2020 2021 2020 China $ 184,796 $ 157,215 $ 509,072 $ 375,708 Taiwan 47,048 40,782 125,756 79,644 Europe 21,328 14,255 62,498 40,770 South Korea 24,442 20,935 62,721 44,452 Southeast Asia 14,820 11,854 38,506 32,256 Japan 20,944 9,433 47,546 25,079 United States 10,091 4,880 24,935 13,298 Other 53 68 260 202 Total $ 323,522 $ 259,422 $ 871,294 $ 611,409 The following is a summary of revenue by product family (in thousands): Three Months Ended September 30, Nine Months Ended September 30, Product Family 2021 2020 2021 2020 DC to DC $ 307,368 $ 247,561 $ 827,605 $ 580,549 Lighting Control 16,154 11,861 43,689 30,860 Total $ 323,522 $ 259,422 $ 871,294 $ 611,409 The following is a summary of long-lived assets by geographic regions (in thousands): September 30, December 31, Country 2021 2020 China $ 192,485 $ 151,752 United States 113,310 101,768 Taiwan 19,187 18,797 Other 15,078 9,211 Total $ 340,060 $ 281,528

Note 8 - Commitments and Contin

Note 8 - Commitments and Contingencies	9 Months Ended
	Sep. 30, 2021
Notes to Financial Statements
Commitments and Contingencies Disclosure [Text Block]	8. Product Warranties The Company generally provides one two no not The changes in warranty reserves are as follows (in thousands): Three Months Ended September 30, Nine Months Ended September 30, 2021 2020 2021 2020 Balance at beginning of period $ 10,873 $ 1,174 $ 6,895 $ 1,139 Warranty provision for product sales 7,757 3,324 12,954 4,364 Settlements made (770 ) (254 ) (1,739 ) (760 ) Unused warranty provision (84 ) (345 ) (334 ) (844 ) Balance at end of period $ 17,776 $ 3,899 $ 17,776 $ 3,899 Purchase Commitments The Company has outstanding purchase commitments with its suppliers and other parties that require the future purchases of goods or services, which primarily consist of wafer and other inventory purchases, assembly and other manufacturing services, construction or purchases of property and equipment, and license arrangements. As of September 30, 2021 , Litigation The Company is a party to actions and proceedings in the ordinary course of business, including potential litigation initiated by its stockholders, challenges to the enforceability or validity of its intellectual property, claims that the Company’s products infringe on the intellectual property rights of others, and employment matters. These proceedings often involve complex questions of fact and law and may September 30, 2021 , no

Note 9 - Cash, Cash Equivalents

Note 9 - Cash, Cash Equivalents, Investments and Restricted Cash	9 Months Ended
	Sep. 30, 2021
Notes to Financial Statements
Financial Instruments Disclosure [Text Block]	9. The following is a summary of the Company’s cash, cash equivalents and debt investments (in thousands): September 30, December 31, 2021 2020 Cash $ 212,622 $ 300,609 Money market funds 13,469 34,335 Certificates of deposit 139,361 - Corporate debt securities 369,094 249,671 Commercial paper - 2,999 U.S. treasuries and government agency bonds 7,492 7,499 Auction-rate securities backed by student-loan notes 2,501 2,861 Total $ 744,539 $ 597,974 September 30, December 31, 2021 2020 Reported as: Cash and cash equivalents $ 226,091 $ 334,944 Short-term investments 515,947 260,169 Debt investment within other long-term assets 2,501 2,861 Total $ 744,539 $ 597,974 The following table summarizes the contractual maturities of the short-term and long-term available-for-sale investments as of September 30, 2021 ( Amortized Cost Fair Value Due in less than 1 year $ 113,987 $ 114,265 Due in 1 - 5 years 401,166 401,682 Due in greater than 5 years 2,620 2,501 Total $ 517,773 $ 518,448 Gross realized gains and losses recognized on the sales of available-for-sale investments were not The following tables summarize the unrealized gain and loss positions related to the available-for sale investments (in thousands): September 30, 2021 Amortized Cost Unrealized Gains Unrealized Losses Fair Value Money market funds $ 13,469 $ - $ - $ 13,469 Certificates of deposit 139,361 - - 139,361 Corporate debt securities 368,298 1,122 (326 ) 369,094 U.S. treasuries and government agency bonds 7,494 1 (3 ) 7,492 Auction-rate securities backed by student-loan notes 2,620 - (119 ) 2,501 Total $ 531,242 $ 1,123 $ (448 ) $ 531,917 December 31, 2020 Amortized Cost Unrealized Gains Unrealized Losses Fair Value Money market funds $ 34,335 $ - $ - $ 34,335 Corporate debt securities 247,591 2,177 (97 ) 249,671 Commercial paper 2,999 - - 2,999 U.S. treasuries and government agency bonds 7,499 2 (2 ) 7,499 Auction-rate securities backed by student-loan notes 3,020 - (159 ) 2,861 Total $ 295,444 $ 2,179 $ (258 ) $ 297,365 The following tables present information about the available-for-sale investments that had been in a continuous unrealized loss position for less than 12 12 September 30, 2021 Less than 12 Months Greater than 12 Months Total Fair Value Unrealized Losses Fair Value Unrealized Losses Fair Value Unrealized Losses Corporate debt securities $ 190,629 $ (326 ) $ - $ - $ 190,629 $ (326 ) U.S. treasuries and government agency bonds 5,992 (3 ) - - 5,992 (3 ) Auction-rate securities backed by student-loan notes - - 2,501 (119 ) 2,501 (119 ) Total $ 196,621 $ (329 ) $ 2,501 $ (119 ) $ 199,122 $ (448 ) December 31, 2020 Less than 12 Months Greater than 12 Months Total Fair Value Unrealized Losses Fair Value Unrealized Losses Fair Value Unrealized Losses Corporate debt securities $ 59,144 $ (97 ) $ - $ - $ 59,144 $ (97 ) U.S. treasuries and government agency bonds 5,998 (2 ) - - 5,998 (2 ) Auction-rate securities backed by student-loan notes - - 2,861 (159 ) 2,861 (159 ) Total $ 65,142 $ (99 ) $ 2,861 $ (159 ) $ 68,003 $ (258 ) An impairment exists when the fair value of an investment is less than its amortized cost basis. As of September 30, 2021 December 31, 2020, not one not The Company’s auction-rate securities are backed by pools of student loans supported by guarantees by the U.S. Department of Education. The underlying maturities of these securities are up to 25 not not not Non-Marketable Equity Investment In November 2020 , September 30, 2021 December 31, 2020 , not three nine September 30, 2021 . Restricted Cash The following table provides a reconciliation of cash, cash equivalents and restricted cash reported on the Condensed Consolidated Balance Sheets to the amounts reported on the Condensed Consolidated Statements of Cash Flows (in thousands): September 30, December 31, 2021 2020 Cash and cash equivalents $ 226,091 $ 334,944 Restricted cash included in other long-term assets 120 127 Total cash, cash equivalents and restricted cash reported on the Condensed Consolidated Statements of Cash Flows $ 226,211 $ 335,071 As of September 30, 2021 December 31, 2020 ,

Note 10 - Fair Value Measuremen

Note 10 - Fair Value Measurements	9 Months Ended
	Sep. 30, 2021
Notes to Financial Statements
Fair Value Disclosures [Text Block]	10. The following tables summarize the fair value of the financial assets measured on a recurring basis (in thousands): September 30, 2021 Total Level 1 Level 2 Level 3 Money market funds $ 13,469 $ 13,469 $ - $ - Certificates of deposit 139,361 - 139,361 - Corporate debt securities 369,094 - 369,094 - U.S. treasuries and government agency bonds 7,492 - 7,492 - Auction-rate securities backed by student-loan notes 2,501 - - 2,501 Mutual funds and money market funds under deferred compensation plan 29,919 29,919 - - Total $ 561,836 $ 43,388 $ 515,947 $ 2,501 December 31, 2020 Total Level 1 Level 2 Level 3 Money market funds $ 34,335 $ 34,335 $ - $ - Corporate debt securities 249,671 - 249,671 - Commercial paper 2,999 - 2,999 - U.S. treasuries and government agency bonds 7,499 - 7,499 - Auction-rate securities backed by student-loan notes 2,861 - - 2,861 Mutual funds and money market funds under deferred compensation plan 26,924 26,924 - - Total $ 324,289 $ 61,259 $ 260,169 $ 2,861 ● Level 1 ● Level 2 may third ● Level 3 Redemptions and changes in the fair value of the auction-rate securities classified as Level 3 not three nine September 30, 2021.

Note 11 - Deferred Compensation

Note 11 - Deferred Compensation Plan	9 Months Ended
	Sep. 30, 2021
Notes to Financial Statements
Compensation and Employee Benefit Plans [Text Block]	11. The following table summarizes the deferred compensation plan balances on the Condensed Consolidated Balance Sheets (in thousands): September 30, December 31, 2021 2020 Deferred compensation plan asset components: Cash surrender value of corporate-owned life insurance policies $ 20,722 $ 19,222 Fair value of mutual funds and money market funds 29,919 26,924 Total $ 50,641 $ 46,146 Deferred compensation plan assets reported in: Other long-term assets $ 50,641 $ 46,146 Deferred compensation plan liabilities reported in: Accrued compensation and related benefits (short-term) $ 282 $ 155 Other long-term liabilities 52,707 48,280 Total $ 52,989 $ 48,435

Note 12 - Other Income, Net

Note 12 - Other Income, Net	9 Months Ended
	Sep. 30, 2021
Notes to Financial Statements
Other Nonoperating Income and Expense [Text Block]	12. The components of other income, net, are as follows (in thousands): Three Months Ended September 30, Nine Months Ended September 30, 2021 2020 2021 2020 Interest income $ 3,050 $ 2,311 $ 8,102 $ 7,073 Amortization of premium on available-for-sale securities (1,305 ) (863 ) (3,231 ) (1,984 ) Gain (loss) on deferred compensation plan investments (399 ) 1,598 2,640 1,420 Foreign currency exchange loss (171 ) (759 ) (544 ) (889 ) Other (382 ) 207 (556 ) 360 Total $ 793 $ 2,494 $ 6,411 $ 5,980

Note 13 - Income Taxes

Note 13 - Income Taxes	9 Months Ended
	Sep. 30, 2021
Notes to Financial Statements
Income Tax Disclosure [Text Block]	13. The income tax provision or benefit for interim periods is generally determined using an estimate of the Company’s annual effective tax rate and adjusted for discrete items, if any, in the relevant period. Each quarter the estimate of the annual effective tax rate is updated, and if the Company’s estimated tax rate changes, a cumulative adjustment is made. The income tax expense for the three September 30, 2021 nine September 30, 2021 The income tax expense for the three September 30, 2020 nine September 30, 2020 The Company’s uncertain tax positions relate to the allocation of income and deductions among its global entities and to the determination of the research and development tax credit. Various events, some of which cannot be predicted, such as clarification of tax law by administrative or judicial means, may twelve not

Note 14 - Accumulated Other Com

Note 14 - Accumulated Other Comprehensive Income	9 Months Ended
	Sep. 30, 2021
Notes to Financial Statements
Comprehensive Income (Loss) Note [Text Block]	14. INCOME The following table summarizes the changes in accumulated other comprehensive income (in thousands): Unrealized Gains (Loss) on Available- for-Sale Securities Foreign Currency Translation Adjustments Total Balance as of January 1, 2021 $ 1,601 $ 8,539 $ 10,140 Other comprehensive loss before reclassifications (754 ) (2,474 ) (3,228 ) Amounts reclassified from accumulated other comprehensive income (24 ) - (24 ) Tax effect 124 - 124 Net current period other comprehensive loss (654 ) (2,474 ) (3,128 ) Balance as of March 31, 2021 947 6,065 7,012 Other comprehensive income (loss) before reclassifications (169 ) 5,437 5,268 Tax effect 21 - 21 Net current period other comprehensive income (loss) (148 ) 5,437 5,289 Balance as of June 30, 2021 799 11,502 12,301 Other comprehensive loss before reclassifications (287 ) (371 ) (658 ) Amounts reclassified from accumulated other comprehensive income (13 ) - (13 ) Tax effect 32 - 32 Net current period other comprehensive loss (268 ) (371 ) (639 ) Balance as of September 30, 2021 $ 531 $ 11,131 $ 11,662 The amounts reclassified from accumulated other comprehensive income were recorded in other income, net, on the Condensed Consolidated Statements of Operations.

Note 15 - Dividends and Dividen

Note 15 - Dividends and Dividend Equivalents	9 Months Ended
	Sep. 30, 2021
Notes to Financial Statements
Dividends And Dividend Equivalents [Text Block]	15. Cash Dividend Program The Company has a dividend program approved by the Board of Directors, pursuant to which the Company intends to pay quarterly cash dividends on its common stock. Based on the Company’s historical practice, stockholders of record as of the last business day of the quarter are entitled to receive the quarterly cash dividends when and if declared by the Board of Directors, which are payable to the stockholders in the following month. The Board of Directors declared the following cash dividends (in thousands, except per-share amounts): Three Months Ended September 30, Nine Months Ended September 30, 2021 2020 2021 2020 Dividend declared per share $ 0.60 $ 0.50 $ 1.80 $ 1.50 Total amount $ 27,606 $ 22,508 $ 82,501 $ 67,239 As of September 30, 2021 December 31, 2020, The declaration of any future cash dividends is at the discretion of the Board of Directors and will depend on, among other things, the Company’s financial condition, results of operations, capital requirements, business conditions, and other factors that the Board of Directors may The Company anticipates that cash used for future dividend payments will come from its domestic cash, cash generated from ongoing U.S. operations, and cash repatriated from its Bermuda subsidiary. The Company also anticipates that earnings from other foreign subsidiaries will continue to be indefinitely reinvested. Cash Dividend Equivalent Rights The Company's RSUs contain rights to receive cash dividend equivalents, which entitle employees who hold RSUs to the same dividend value per share as holders of common stock. The dividend equivalents are accumulated and paid to the employees when the underlying RSUs vest. Dividend equivalents accumulated on the underlying RSUs are forfeited if the employees do not not September 30, 2021 December 31, 2020 ,

Significant Accounting Policies

Significant Accounting Policies (Policies)	9 Months Ended
	Sep. 30, 2021
Accounting Policies [Abstract]
Use of Estimates, Policy [Policy Text Block]	Use of Estimates The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements, and reported amounts of revenue and expenses during the reporting period. Significant estimates and assumptions used in these condensed consolidated financial statements primarily include those related to revenue recognition, inventory valuation, valuation of share-based awards, contingencies and income tax valuation allowances. Actual results could differ from these estimates and assumptions, and any such differences may The COVID- 19 not three nine September 30, 2021. not 19 10 December 31, 2020 .
New Accounting Pronouncements, Policy [Policy Text Block]	Recently Adopted Accounting Pronouncement In December 2019, No. 2019 12, Income Taxes (Topic 740 December 15, 2020. first 2021 not

Note 3 - Stock-based Compensa_2

Note 3 - Stock-based Compensation (Tables)	9 Months Ended
	Sep. 30, 2021
Notes Tables
Share-based Payment Arrangement, Cost by Plan [Table Text Block]	Three Months Ended September 30, Nine Months Ended September 30, 2021 2020 2021 2020 Cost of revenue $ 922 $ 707 $ 2,622 $ 1,906 Research and development 6,646 5,334 19,564 14,666 Selling, general and administrative 24,004 16,934 70,096 46,009 Total stock-based compensation expense $ 31,572 $ 22,975 $ 92,282 $ 62,581 Tax benefit related to stock-based compensation (1) $ 488 $ 512 $ 1,299 $ 1,450
Share-based Payment Arrangement, Restricted Stock and Restricted Stock Unit, Activity [Table Text Block]	Time-Based RSUs PSUs and MPSUs MSUs Total Number of Shares Weighted- Average Grant Date Fair Value Per Share Number of Shares Weighted- Average Grant Date Fair Value Per Share Number of Shares Weighted- Average Grant Date Fair Value Per Share Number of Shares Weighted- Average Grant Date Fair Value Per Share Outstanding at January 1, 2021 161 $ 151.62 1,390 $ 132.60 1,554 $ 40.40 3,105 $ 87.42 Granted 43 $ 375.33 365 (1) $ 352.37 - $ - 408 $ 354.79 Vested (60 ) $ 142.13 (504 ) $ 91.73 (243 ) $ 23.57 (807 ) $ 74.95 Forfeited (9 ) $ 199.05 (12 ) $ 100.25 (9 ) $ 68.48 (30 ) $ 118.31 Outstanding at September 30, 2021 135 $ 223.71 1,239 $ 214.52 1,302 $ 43.33 2,676 $ 131.68
Schedule of Share-based Payment Award, Employee Stock Purchase Plan, Valuation Assumptions [Table Text Block]	Three Months Ended September 30, Nine Months Ended September 30, 2021 2020 2021 2020 Expected term (in years) 0.5 0.5 0.5 0.5 Expected volatility 43.0 % 66.4 % 43.2 % 48.9 % Risk-free interest rate 0.1 % 0.1 % 0.1 % 0.8 % Dividend yield 0.5 % 0.7 % 0.6 % 0.9 %

Note 4 - Balance Sheet Compon_2

Note 4 - Balance Sheet Components (Tables)	9 Months Ended
	Sep. 30, 2021
Notes Tables
Schedule of Inventory, Current [Table Text Block]	September 30, December 31, 2021 2020 Raw materials $ 17,254 $ 25,503 Work in process 112,922 77,100 Finished goods 77,886 54,459 Total $ 208,062 $ 157,062
Schedule of Other Current Assets [Table Text Block]	September 30, December 31, 2021 2020 RSU tax withholding proceeds receivable $ 16,075 $ 12,504 Prepaid expense 10,638 5,032 Accrued interest receivable 4,094 1,914 Assets for product returns 2,059 1,684 Other 1,669 1,846 Total $ 34,535 $ 22,980
Schedule of Other Assets, Noncurrent [Table Text Block]	September 30, December 31, 2021 2020 Deferred compensation plan assets $ 50,641 $ 46,146 Operating lease right-of-use (“ROU”) assets 6,292 3,719 Prepaid expense 2,256 2,340 Debt investment 2,501 2,861 Equity investment in a privately held company 3,215 3,400 Other 2,145 1,372 Total $ 67,050 $ 59,838
Schedule of Accrued Liabilities [Table Text Block]	September 30, December 31, 2021 2020 Dividends and dividend equivalents $ 32,044 $ 26,435 Stock rotation and sales returns 7,695 6,005 Accrued purchases of property and equipment 1,033 5,841 Income tax payable 3,884 3,755 Customer prepayments 6,690 7,238 Commissions 1,347 1,107 Operating lease liabilities 2,425 1,406 Warranty 17,776 6,895 Other 6,862 4,278 Total $ 79,756 $ 62,960
Other Noncurrent Liabilities [Table Text Block]	September 30, December 31, 2021 2020 Deferred compensation plan liabilities $ 52,707 $ 48,280 Dividend equivalents 8,444 7,871 Operating lease liabilities 3,355 1,693 Other - 29 Total $ 64,506 $ 57,873

Note 5 - Leases (Tables)

Note 5 - Leases (Tables)	9 Months Ended
	Sep. 30, 2021
Notes Tables
Lease, Cost [Table Text Block]	Three Months Ended September 30, Nine Months Ended September 30, 2021 2020 2021 2020 Lease costs: Operating lease costs $ 623 $ 364 $ 1,694 $ 1,093 Other 140 87 387 235 Total lease costs $ 763 $ 451 $ 2,081 $ 1,328 Three Months Ended September 30, Nine Months Ended September 30, 2021 2020 2021 2020 Cash paid for amounts included in the measurement of lease liabilities: Operating cash flows from operating leases $ 612 $ 394 $ 1,622 $ 1,097 ROU assets obtained in exchange for new operating lease liabilities $ 793 $ - $ 4,477 $ 1,796 September 30, December 31, 2021 2020 Weighted-average remaining lease term (in years) 3.0 2.7 Weighted-average discount rate 2.1 % 2.7 %
Lessee, Operating Lease, Liability, Maturity [Table Text Block]	2021 (remaining three months) $ 664 2022 2,342 2023 1,505 2024 834 2025 645 Thereafter 8 Total remaining lease payments 5,998 Less: imputed interest (218 ) Total lease liabilities $ 5,780 Reported as: Current liabilities $ 2,425 Long-term liabilities $ 3,355
Lessor, Operating Lease, Payment to be Received, Fiscal Year Maturity [Table Text Block]	2021 (remaining three months) $ 594 2022 2,293 2023 1,621 2024 631 2025 110 Thereafter 21 Total $ 5,270

Note 6 - Net Income Per Share (

Note 6 - Net Income Per Share (Tables)	9 Months Ended
	Sep. 30, 2021
Notes Tables
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]	Three Months Ended September 30, Nine Months Ended September 30, 2021 2020 2021 2020 Numerator: Net income $ 68,770 $ 55,566 $ 169,352 $ 121,488 Denominator: Weighted-average outstanding shares - basic 45,970 44,970 45,754 44,737 Effect of dilutive securities 1,882 1,985 2,018 2,082 Weighted-average outstanding shares - diluted 47,852 46,955 47,772 46,819 Net income per share: Basic $ 1.50 $ 1.24 $ 3.70 $ 2.72 Diluted $ 1.44 $ 1.18 $ 3.55 $ 2.59

Note 7 - Segment, Significant_2

Note 7 - Segment, Significant Customers and Geographic Information (Tables)	9 Months Ended
	Sep. 30, 2021
Notes Tables
Schedules of Concentration of Risk, by Risk Factor [Table Text Block]	Three Months Ended September 30, Nine Months Ended September 30, Customer 2021 2020 2021 2020 Distributor A 24 % 22 % 26 % 23 % Distributor B 15 % 11 % 16 % * Distributor C 12 % * * * Direct customer A * 14 % * 11 % September 30, December 31, Customer 2021 2020 Distributor A 17 % 24 % Distributor B 18 % 21 % Value-added reseller A 15 % 13 % Direct customer A * 10 %
Schedule of Revenue from External Customers Attributed to Foreign Countries by Geographic Area [Table Text Block]	Three Months Ended September 30, Nine Months Ended September 30, Country or Region 2021 2020 2021 2020 China $ 184,796 $ 157,215 $ 509,072 $ 375,708 Taiwan 47,048 40,782 125,756 79,644 Europe 21,328 14,255 62,498 40,770 South Korea 24,442 20,935 62,721 44,452 Southeast Asia 14,820 11,854 38,506 32,256 Japan 20,944 9,433 47,546 25,079 United States 10,091 4,880 24,935 13,298 Other 53 68 260 202 Total $ 323,522 $ 259,422 $ 871,294 $ 611,409
Revenue from External Customers by Products and Services [Table Text Block]	Three Months Ended September 30, Nine Months Ended September 30, Product Family 2021 2020 2021 2020 DC to DC $ 307,368 $ 247,561 $ 827,605 $ 580,549 Lighting Control 16,154 11,861 43,689 30,860 Total $ 323,522 $ 259,422 $ 871,294 $ 611,409
Schedule of Disclosure on Geographic Areas, Long-Lived Assets in Individual Foreign Countries by Country [Table Text Block]	September 30, December 31, Country 2021 2020 China $ 192,485 $ 151,752 United States 113,310 101,768 Taiwan 19,187 18,797 Other 15,078 9,211 Total $ 340,060 $ 281,528

Note 8 - Commitments and Cont_2

Note 8 - Commitments and Contingencies (Tables)	9 Months Ended
	Sep. 30, 2021
Notes Tables
Schedule of Product Warranty Liability [Table Text Block]	Three Months Ended September 30, Nine Months Ended September 30, 2021 2020 2021 2020 Balance at beginning of period $ 10,873 $ 1,174 $ 6,895 $ 1,139 Warranty provision for product sales 7,757 3,324 12,954 4,364 Settlements made (770 ) (254 ) (1,739 ) (760 ) Unused warranty provision (84 ) (345 ) (334 ) (844 ) Balance at end of period $ 17,776 $ 3,899 $ 17,776 $ 3,899

Note 9 - Cash, Cash Equivalen_2

Note 9 - Cash, Cash Equivalents, Investments and Restricted Cash (Tables)	9 Months Ended
	Sep. 30, 2021
Notes Tables
Fair Value, by Balance Sheet Grouping [Table Text Block]	September 30, December 31, 2021 2020 Cash $ 212,622 $ 300,609 Money market funds 13,469 34,335 Certificates of deposit 139,361 - Corporate debt securities 369,094 249,671 Commercial paper - 2,999 U.S. treasuries and government agency bonds 7,492 7,499 Auction-rate securities backed by student-loan notes 2,501 2,861 Total $ 744,539 $ 597,974 September 30, December 31, 2021 2020 Reported as: Cash and cash equivalents $ 226,091 $ 334,944 Short-term investments 515,947 260,169 Debt investment within other long-term assets 2,501 2,861 Total $ 744,539 $ 597,974
Investments Classified by Contractual Maturity Date [Table Text Block]	Amortized Cost Fair Value Due in less than 1 year $ 113,987 $ 114,265 Due in 1 - 5 years 401,166 401,682 Due in greater than 5 years 2,620 2,501 Total $ 517,773 $ 518,448
Unrealized Gain (Loss) on Investments [Table Text Block]	September 30, 2021 Amortized Cost Unrealized Gains Unrealized Losses Fair Value Money market funds $ 13,469 $ - $ - $ 13,469 Certificates of deposit 139,361 - - 139,361 Corporate debt securities 368,298 1,122 (326 ) 369,094 U.S. treasuries and government agency bonds 7,494 1 (3 ) 7,492 Auction-rate securities backed by student-loan notes 2,620 - (119 ) 2,501 Total $ 531,242 $ 1,123 $ (448 ) $ 531,917 December 31, 2020 Amortized Cost Unrealized Gains Unrealized Losses Fair Value Money market funds $ 34,335 $ - $ - $ 34,335 Corporate debt securities 247,591 2,177 (97 ) 249,671 Commercial paper 2,999 - - 2,999 U.S. treasuries and government agency bonds 7,499 2 (2 ) 7,499 Auction-rate securities backed by student-loan notes 3,020 - (159 ) 2,861 Total $ 295,444 $ 2,179 $ (258 ) $ 297,365
Debt Securities, Available-for-sale, Unrealized Loss Position, Fair Value [Table Text Block]	September 30, 2021 Less than 12 Months Greater than 12 Months Total Fair Value Unrealized Losses Fair Value Unrealized Losses Fair Value Unrealized Losses Corporate debt securities $ 190,629 $ (326 ) $ - $ - $ 190,629 $ (326 ) U.S. treasuries and government agency bonds 5,992 (3 ) - - 5,992 (3 ) Auction-rate securities backed by student-loan notes - - 2,501 (119 ) 2,501 (119 ) Total $ 196,621 $ (329 ) $ 2,501 $ (119 ) $ 199,122 $ (448 ) December 31, 2020 Less than 12 Months Greater than 12 Months Total Fair Value Unrealized Losses Fair Value Unrealized Losses Fair Value Unrealized Losses Corporate debt securities $ 59,144 $ (97 ) $ - $ - $ 59,144 $ (97 ) U.S. treasuries and government agency bonds 5,998 (2 ) - - 5,998 (2 ) Auction-rate securities backed by student-loan notes - - 2,861 (159 ) 2,861 (159 ) Total $ 65,142 $ (99 ) $ 2,861 $ (159 ) $ 68,003 $ (258 )
Restrictions on Cash and Cash Equivalents [Table Text Block]	September 30, December 31, 2021 2020 Cash and cash equivalents $ 226,091 $ 334,944 Restricted cash included in other long-term assets 120 127 Total cash, cash equivalents and restricted cash reported on the Condensed Consolidated Statements of Cash Flows $ 226,211 $ 335,071

Note 10 - Fair Value Measurem_2

Note 10 - Fair Value Measurements (Tables)	9 Months Ended
	Sep. 30, 2021
Notes Tables
Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block]	September 30, 2021 Total Level 1 Level 2 Level 3 Money market funds $ 13,469 $ 13,469 $ - $ - Certificates of deposit 139,361 - 139,361 - Corporate debt securities 369,094 - 369,094 - U.S. treasuries and government agency bonds 7,492 - 7,492 - Auction-rate securities backed by student-loan notes 2,501 - - 2,501 Mutual funds and money market funds under deferred compensation plan 29,919 29,919 - - Total $ 561,836 $ 43,388 $ 515,947 $ 2,501 December 31, 2020 Total Level 1 Level 2 Level 3 Money market funds $ 34,335 $ 34,335 $ - $ - Corporate debt securities 249,671 - 249,671 - Commercial paper 2,999 - 2,999 - U.S. treasuries and government agency bonds 7,499 - 7,499 - Auction-rate securities backed by student-loan notes 2,861 - - 2,861 Mutual funds and money market funds under deferred compensation plan 26,924 26,924 - - Total $ 324,289 $ 61,259 $ 260,169 $ 2,861

Note 11 - Deferred Compensati_2

Note 11 - Deferred Compensation Plan (Tables)	9 Months Ended
	Sep. 30, 2021
Notes Tables
Schedule of Deferred Compensation Arrangement with Individual, Excluding Share-based Payments and Postretirement Benefits by Title of Individual and Type of Deferred Compensation [Table Text Block]	September 30, December 31, 2021 2020 Deferred compensation plan asset components: Cash surrender value of corporate-owned life insurance policies $ 20,722 $ 19,222 Fair value of mutual funds and money market funds 29,919 26,924 Total $ 50,641 $ 46,146 Deferred compensation plan assets reported in: Other long-term assets $ 50,641 $ 46,146 Deferred compensation plan liabilities reported in: Accrued compensation and related benefits (short-term) $ 282 $ 155 Other long-term liabilities 52,707 48,280 Total $ 52,989 $ 48,435

Note 12 - Other Income, Net (Ta

Note 12 - Other Income, Net (Tables)	9 Months Ended
	Sep. 30, 2021
Notes Tables
Schedule of Other Nonoperating Income (Expense) [Table Text Block]	Three Months Ended September 30, Nine Months Ended September 30, 2021 2020 2021 2020 Interest income $ 3,050 $ 2,311 $ 8,102 $ 7,073 Amortization of premium on available-for-sale securities (1,305 ) (863 ) (3,231 ) (1,984 ) Gain (loss) on deferred compensation plan investments (399 ) 1,598 2,640 1,420 Foreign currency exchange loss (171 ) (759 ) (544 ) (889 ) Other (382 ) 207 (556 ) 360 Total $ 793 $ 2,494 $ 6,411 $ 5,980

Note 14 - Accumulated Other C_2

Note 14 - Accumulated Other Comprehensive Income (Tables)	9 Months Ended
	Sep. 30, 2021
Notes Tables
Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block]	Unrealized Gains (Loss) on Available- for-Sale Securities Foreign Currency Translation Adjustments Total Balance as of January 1, 2021 $ 1,601 $ 8,539 $ 10,140 Other comprehensive loss before reclassifications (754 ) (2,474 ) (3,228 ) Amounts reclassified from accumulated other comprehensive income (24 ) - (24 ) Tax effect 124 - 124 Net current period other comprehensive loss (654 ) (2,474 ) (3,128 ) Balance as of March 31, 2021 947 6,065 7,012 Other comprehensive income (loss) before reclassifications (169 ) 5,437 5,268 Tax effect 21 - 21 Net current period other comprehensive income (loss) (148 ) 5,437 5,289 Balance as of June 30, 2021 799 11,502 12,301 Other comprehensive loss before reclassifications (287 ) (371 ) (658 ) Amounts reclassified from accumulated other comprehensive income (13 ) - (13 ) Tax effect 32 - 32 Net current period other comprehensive loss (268 ) (371 ) (639 ) Balance as of September 30, 2021 $ 531 $ 11,131 $ 11,662

Note 15 - Dividends and Divid_2

Note 15 - Dividends and Dividend Equivalents (Tables)	9 Months Ended
	Sep. 30, 2021
Notes Tables
Dividends Declared [Table Text Block]	Three Months Ended September 30, Nine Months Ended September 30, 2021 2020 2021 2020 Dividend declared per share $ 0.60 $ 0.50 $ 1.80 $ 1.50 Total amount $ 27,606 $ 22,508 $ 82,501 $ 67,239

Note 2 - Revenue Recognition (D

Note 2 - Revenue Recognition (Details Textual) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended	9 Months Ended		12 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Jun. 30, 2021	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2020
Lapse Period for Consignment (Day)				60 days
Accounts Receivable, after Allowance for Credit Loss, Current, Total	$ 79,859			$ 79,859		$ 66,843
Accounts Receivable, Allowance for Credit Loss, Ending Balance	0			0		0
Contract with Customer, Liability, Current	6,690			$ 6,690		7,238
Contract with Customer, Liability, Revenue Recognized						7,100
Minimum [Member]
Contract with Customer, Payment Term (Day)			30 days
Maximum [Member]
Contract with Customer, Payment Term (Day)			90 years
Certain Customers in China [Member]
Contract with Customer, Payment Term Required Prior to Shipping Products (Week)				14 days
Certain Customers in China [Member] | Accrued Liabilities, Current [Member]
Contract with Customer, Liability, Current	$ 6,700			$ 6,700		$ 7,200
Customer Concentration Risk [Member] | Revenue Benchmark [Member] | Distributors [Member]
Concentration Risk, Percentage	89.00%	75.00%		89.00%	79.00%
Product [Member]
Percentage of Revenue	96.00%	97.00%		96.00%	98.00%

Note 3 - Stock-based Compensa_3

Note 3 - Stock-based Compensation (Details Textual) - USD ($) $ / shares in Units, $ in Thousands	Jun. 11, 2020	Feb. 28, 2021	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020	Nov. 13, 2014
Share Price (in dollars per share)		$ 374.57	$ 484.68		$ 484.68
Proceeds, Issuance of Shares, Share-based Payment Arrangement, Excluding Option Exercised					$ 15,147	$ 16,457
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares)					408,000
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value (in dollars per share)					$ 354.79
Proceeds from Stock Plans					$ 4,670	3,819
Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Aggregate Intrinsic Value, Vested			$ 76,800	$ 45,900	297,700	267,800
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Aggregate Intrinsic Value, Outstanding			1,300,000		1,300,000
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount, Total			$ 186,700		$ 186,700
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Year)					2 years
Proceeds, Issuance of Shares, Share-based Payment Arrangement, Excluding Option Exercised					$ 15,100	$ 16,500
Time-Based RSUs [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares)					43,000
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value (in dollars per share)					$ 375.33
Time-Based RSUs [Member] | Employees [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period (Year)					4 years
Time-Based RSUs [Member] | Director [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period (Year)					1 year
PSU 2021 [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Price Per Share Payable Upon Vesting of Equity Instruments Other than Options (in dollars per share)		30
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value (in dollars per share)		$ 374.57
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term (Year)		4 years
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate		41.40%
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate		0.30%
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Dividend Rate		0.60%
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Discount for Postvesting Restrictions		9.80%
PSU 2021 [Member] | Executive Officer [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares)		80,000
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Maximum Percentage Allowed		300.00%
Share-based Compensation Arrangement by Share-based Payment Award, Vesting, Measurement Period of Relative Revenue Growth Rate to Industry Average (Year)		2 years
Maximum Stock Compensation Costs		$ 114,400
PSU 2021 [Member] | Executive Officer [Member] | Vesting First Quarter of 2023 if Performance Conditions are Met [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage		50.00%
PSU 2021 [Member] | Non-Executive Employees [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares)		14,000
Share-based Compensation Arrangement by Share-based Payment Award, Vesting, Measurement Period of Relative Revenue Growth Rate to Industry Average (Year)		2 years
Maximum Stock Compensation Costs		$ 12,200
PSU 2021 [Member] | Non-Executive Employees [Member] | Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Minimum Percentage Allowed		200.00%
PSU 2021 [Member] | Non-Executive Employees [Member] | Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Minimum Percentage Allowed		300.00%
PSU 2021 [Member] | Non-Executive Employees [Member] | Vesting First Quarter of 2021 if Performance Conditions are Met [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage		50.00%
The2014 Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized (in shares)							5,500,000
Amended and Restated 2014 Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Additional Shares Authorized (in shares)	10,500,000
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant (in shares)			5,600,000		5,600,000
Employee Stock Purchase Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant (in shares)			4,500,000		4,500,000
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount, Total			$ 600		$ 600
Stock Issued During Period, Shares, Employee Stock Purchase Plans (in shares)			7,000	12,000	17,000	28,000
Employee Stock Purchase Plan Shares Issued, Intrinsic Value			$ 1,000	$ 1,500	$ 2,400	$ 2,500
Proceeds from Stock Plans					$ 4,700	$ 3,800

Note 3 - Stock-based Compensa_4

Note 3 - Stock-based Compensation - Stock-based Compensation Plan Expenses (Details) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Share based compensation expense		$ 31,572	$ 22,975	$ 92,282	$ 62,581
Tax benefit related to stock-based compensation	[1]	488	512	1,299	1,450
Cost of Sales [Member]
Share based compensation expense		922	707	2,622	1,906
Research and Development Expense [Member]
Share based compensation expense		6,646	5,334	19,564	14,666
Selling, General and Administrative Expenses [Member]
Share based compensation expense		$ 24,004	$ 16,934	$ 70,096	$ 46,009
[1]	Amount reflects the tax benefit related to stock-based compensation recorded for equity awards that are expected to generate tax deductions when they vest in future periods.

Note 3 - Stock-based Compensa_5

Note 3 - Stock-based Compensation - RSU Summary (Details)	9 Months Ended
	Sep. 30, 2021$ / sharesshares
Beginning balance (in shares) | shares	3,105,000
Weighted-Average Grant Date Fair Value Per Share, beginning balance (in dollars per share) | $ / shares	$ 87.42
Granted (in shares) | shares	408,000
Weighted-Average Grant Date Fair Value Per Share, granted (in dollars per share) | $ / shares	$ 354.79
Vested (in shares) | shares	(807,000)
Weighted-Average Grant Date Fair Value Per Share, vested (in dollars per share) | $ / shares	$ 74.95
Forfeited (in shares) | shares	(30,000)
Weighted-Average Grant Date Fair Value Per Share, forfeited (in dollars per share) | $ / shares	$ 118.31
Ending balance (in shares) | shares	2,676,000
Weighted-Average Grant Date Fair Value Per Share, ending balance (in dollars per share) | $ / shares	$ 131.68
Time-Based RSUs [Member]
Beginning balance (in shares) | shares	161,000
Weighted-Average Grant Date Fair Value Per Share, beginning balance (in dollars per share) | $ / shares	$ 151.62
Granted (in shares) | shares	43,000
Weighted-Average Grant Date Fair Value Per Share, granted (in dollars per share) | $ / shares	$ 375.33
Vested (in shares) | shares	(60,000)
Weighted-Average Grant Date Fair Value Per Share, vested (in dollars per share) | $ / shares	$ 142.13
Forfeited (in shares) | shares	(9,000)
Weighted-Average Grant Date Fair Value Per Share, forfeited (in dollars per share) | $ / shares	$ 199.05
Ending balance (in shares) | shares	135,000
Weighted-Average Grant Date Fair Value Per Share, ending balance (in dollars per share) | $ / shares	$ 223.71
PSUs and MPSUs [Member]
Beginning balance (in shares) | shares	1,390,000
Weighted-Average Grant Date Fair Value Per Share, beginning balance (in dollars per share) | $ / shares	$ 132.60
Granted (in shares) | shares	365,000	[1]
Weighted-Average Grant Date Fair Value Per Share, granted (in dollars per share) | $ / shares	$ 352.37
Vested (in shares) | shares	(504,000)
Weighted-Average Grant Date Fair Value Per Share, vested (in dollars per share) | $ / shares	$ 91.73
Forfeited (in shares) | shares	(12,000)
Weighted-Average Grant Date Fair Value Per Share, forfeited (in dollars per share) | $ / shares	$ 100.25
Ending balance (in shares) | shares	1,239,000
Weighted-Average Grant Date Fair Value Per Share, ending balance (in dollars per share) | $ / shares	$ 214.52
MSUs [Member]
Beginning balance (in shares) | shares	1,554,000
Weighted-Average Grant Date Fair Value Per Share, beginning balance (in dollars per share) | $ / shares	$ 40.40
Granted (in shares) | shares	0
Weighted-Average Grant Date Fair Value Per Share, granted (in dollars per share) | $ / shares	$ 0
Vested (in shares) | shares	(243,000)
Weighted-Average Grant Date Fair Value Per Share, vested (in dollars per share) | $ / shares	$ 23.57
Forfeited (in shares) | shares	(9,000)
Weighted-Average Grant Date Fair Value Per Share, forfeited (in dollars per share) | $ / shares	$ 68.48
Ending balance (in shares) | shares	1,302,000
Weighted-Average Grant Date Fair Value Per Share, ending balance (in dollars per share) | $ / shares	$ 43.33
[1]	Amount reflects the number of awards that may ultimately be earned based on management’s probability assessment of the achievement of performance conditions at each reporting period.

Note 3 - Stock-based Compensa_6

Note 3 - Stock-based Compensation - Valuation Assumptions (Details) - 2004 Employee Stock Plan [Member] - Employee Stock Purchase Plan [Member]	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Expected term (Year)	6 months	6 months	6 months	6 months
Expected volatility	43.00%	66.40%	43.20%	48.90%
Risk-free interest rate	0.10%	0.10%	0.10%	0.80%
Dividend yield	0.50%	0.70%	0.60%	0.90%

Note 4 - Balance Sheet Compon_3

Note 4 - Balance Sheet Components - Inventories (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Raw materials	$ 17,254	$ 25,503
Work in process	112,922	77,100
Finished goods	77,886	54,459
Total	$ 208,062	$ 157,062

Note 4 - Balance Sheet Compon_4

Note 4 - Balance Sheet Components - Other Current Assets (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
RSU tax withholding proceeds receivable	$ 16,075	$ 12,504
Prepaid expense	10,638	5,032
Accrued interest receivable	4,094	1,914
Assets for product returns	2,059	1,684
Other	1,669	1,846
Total	$ 34,535	$ 22,980

Note 4 - Balance Sheet Compon_5

Note 4 - Balance Sheet Components - Other Long-term Assets (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Deferred compensation plan assets	$ 50,641	$ 46,146
Operating lease right-of-use (“ROU”) assets	6,292	3,719
Prepaid expense	2,256	2,340
Debt investment	2,501	2,861
Equity investment in a privately held company	3,215	3,400
Other	2,145	1,372
Total	$ 67,050	$ 59,838

Note 4 - Balance Sheet Compon_6

Note 4 - Balance Sheet Components - Accrued Liabilities (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Dividends and dividend equivalents	$ 32,044	$ 26,435
Stock rotation and sales returns	7,695	6,005
Accrued purchases of property and equipment	1,033	5,841
Income tax payable	3,884	3,755
Customer prepayments	6,690	7,238
Commissions	1,347	1,107
Warranty	17,776	6,895
Other	6,862	4,278
Total	79,756	62,960
Accrued Liabilities, Current [Member]
Operating lease liabilities	$ 2,425	$ 1,406

Note 4 - Balance Sheet Compon_7

Note 4 - Balance Sheet Components - Other Long-term Liabilities (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Deferred compensation plan liabilities	$ 52,707	$ 48,280
Dividend equivalents	8,444	7,871
Other	0	29
Total	64,506	57,873
Other Long-term Liabilities [Member]
Operating lease liabilities	$ 3,355	$ 1,693

Note 5 - Leases (Details Textua

Note 5 - Leases (Details Textual) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2020
Operating Lease, Right-of-Use Asset	$ 6,292		$ 6,292		$ 3,719
Lessee, Operating Lease, Lease Not yet Commenced, Future Lease Obligations	4,200		4,200
Operating Lease, Lease Income, Lease Payments	700	$ 500	1,700	$ 1,300
Other Assets [Member]
Operating Lease, Right-of-Use Asset	6,300		6,300		3,700
Other Liabilities [Member]
Operating Lease, Liability, Total	$ 5,800		$ 5,800		$ 3,100
Maximum [Member]
Lessee, Operating Lease, Renewal Term (Year)	2 years		2 years
Lessee, Operating Lease, Lease Not yet Commenced, Term of Contract (Year)	5 years		5 years
Lessor, Operating Lease, Remaining Lease Term (Year)			5 years
Lessor, Operating Lease, Renewal Term (Year)	5 years		5 years
Minimum [Member]
Lessee, Operating Lease, Lease Not yet Commenced, Term of Contract (Year)	2 years		2 years
Lessor, Operating Lease, Remaining Lease Term (Year)			1 year

Note 5 - Leases - Leases Cost (

Note 5 - Leases - Leases Cost (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2020
Operating lease costs	$ 623	$ 364	$ 1,694	$ 1,093
Other	140	87	387	235
Total lease costs	763	451	2,081	1,328
Operating cash flows from operating leases	612	394	1,622	1,097
ROU assets obtained in exchange for new operating lease liabilities	$ 793	$ 0	$ 4,477	$ 1,796
Weighted-average remaining lease term (in years) (Year)	3 years		3 years		2 years 8 months 12 days
Weighted-average discount rate	2.10%		2.10%		2.70%

Note 5 - Leases - Maturities of

Note 5 - Leases - Maturities of Lease Liabilities (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
2021 (remaining three months)	$ 664
2022	2,342
2023	1,505
2024	834
2025	645
Thereafter	8
Total remaining lease payments	5,998
Less: imputed interest	(218)
Accrued Liabilities and Other Long-term Liabilities [Member]
Total lease liabilities	5,780
Accrued Liabilities, Current [Member]
Current liabilities	2,425	$ 1,406
Other Long-term Liabilities [Member]
Long-term liabilities	$ 3,355	$ 1,693

Note 5 - Leases - Maturities _2

Note 5 - Leases - Maturities of Income Related to Lease Payments (Details) $ in Thousands	Sep. 30, 2021USD ($)
2021 (remaining three months)	$ 594
2022	2,293
2023	1,621
2024	631
2025	110
Thereafter	21
Total	$ 5,270

Note 6 - Net Income Per Share -

Note 6 - Net Income Per Share - Net Income Per Share Basic and Diluted (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Net income	$ 68,770	$ 55,566	$ 169,352	$ 121,488
Weighted-average outstanding shares - basic (in shares)	45,970	44,970	45,754	44,737
Effect of dilutive securities (in shares)	1,882	1,985	2,018	2,082
Weighted-average outstanding shares - diluted (in shares)	47,852	46,955	47,772	46,819
Earnings per share, basic (in dollars per share)	$ 1.50	$ 1.24	$ 3.70	$ 2.72
Earnings per share, diluted (in dollars per share)	$ 1.44	$ 1.18	$ 3.55	$ 2.59

Note 7 - Segment, Significant_3

Note 7 - Segment, Significant Customers and Geographic Information (Details Textual)	9 Months Ended
	Sep. 30, 2021
Number of Reportable Segments	1

Note 7 - Segment, Significant_4

Note 7 - Segment, Significant Customers and Geographic Information - Customers with Sales and Accounts Receivable Greater Than 10% (Details) - Customer Concentration Risk [Member]	3 Months Ended			9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020		Sep. 30, 2021	Sep. 30, 2020
Revenue Benchmark [Member] | Distributor A [Member]
Concentration risk	24.00%	22.00%		26.00%	23.00%
Revenue Benchmark [Member] | Distributor B [Member]
Concentration risk	15.00%	11.00%	[1]	16.00%
Revenue Benchmark [Member] | Distributor C [Member]
Concentration risk	12.00%
Revenue Benchmark [Member] | Customer A (Direct) [Member]
Concentration risk		14.00%			11.00%
Accounts Receivable [Member] | Distributor A [Member]
Concentration risk				17.00%	24.00%
Accounts Receivable [Member] | Distributor B [Member]
Concentration risk				18.00%	21.00%
Accounts Receivable [Member] | Value Added Reseller A [Member]
Concentration risk				15.00%	13.00%
Accounts Receivable [Member] | Customer A (Direct) [Member]
Concentration risk					10.00%
[1]	Represents less than 10%.

Note 7 - Segment, Significant_5

Note 7 - Segment, Significant Customers and Geographic Information - Revenue by Region (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Revenue	$ 323,522	$ 259,422	$ 871,294	$ 611,409
CHINA
Revenue	184,796	157,215	509,072	375,708
TAIWAN, PROVINCE OF CHINA
Revenue	47,048	40,782	125,756	79,644
Europe [Member]
Revenue	21,328	14,255	62,498	40,770
KOREA, REPUBLIC OF
Revenue	24,442	20,935	62,721	44,452
South East Asia [Member]
Revenue	14,820	11,854	38,506	32,256
JAPAN
Revenue	20,944	9,433	47,546	25,079
UNITED STATES
Revenue	10,091	4,880	24,935	13,298
Other Region [Member]
Revenue	$ 53	$ 68	$ 260	$ 202

Note 7 - Segment, Significant_6

Note 7 - Segment, Significant Customers and Geographic Information - Revenue by Product Family (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Revenue	$ 323,522	$ 259,422	$ 871,294	$ 611,409
DC To DC Products [Member]
Revenue	307,368	247,561	827,605	580,549
Lighting Control Products [Member]
Revenue	$ 16,154	$ 11,861	$ 43,689	$ 30,860

Note 7 - Segment, Significant_7

Note 7 - Segment, Significant Customers and Geographic Information - Long Lived Assets by Geographic Region (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Long lived assets by region	$ 340,060	$ 281,528
CHINA
Long lived assets by region	192,485	151,752
UNITED STATES
Long lived assets by region	113,310	101,768
TAIWAN, PROVINCE OF CHINA
Long lived assets by region	19,187	18,797
Other Region [Member]
Long lived assets by region	$ 15,078	$ 9,211

Note 8 - Commitments and Cont_3

Note 8 - Commitments and Contingencies (Details Textual) $ in Millions	9 Months Ended
	Sep. 30, 2021USD ($)
Purchase Obligation, Total	$ 197.8
Minimum [Member]
Warranty Period (Year)	1 year
Maximum [Member]
Warranty Period (Year)	2 years

Note 8 - Commitments and Cont_4

Note 8 - Commitments and Contingencies - Changes in Warranty Reserve (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Balance	$ 10,873	$ 1,174	$ 6,895	$ 1,139
Warranty provision for product sales	7,757	3,324	12,954	4,364
Settlements made	(770)	(254)	(1,739)	(760)
Unused warranty provision	(84)	(345)	(334)	(844)
Balance	$ 17,776	$ 3,899	$ 17,776	$ 3,899

Note 9 - Cash, Cash Equivalen_3

Note 9 - Cash, Cash Equivalents, Investments and Restricted Cash (Details Textual) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2021	Dec. 31, 2020
Other-than-temporary Impairment Loss, Debt Securities, Available-for-sale, Total	$ 0	$ 0
Redemption, Auction Rate Securities to Date	$ 40,700
Percentage of Auction Rate Securities Redeemed at Par Value	94.00%
Equity Securities without Readily Determinable Fair Value, Amount	$ 3,215	$ 3,400

Note 9 - Cash, Cash Equivalen_4

Note 9 - Cash, Cash Equivalents, Investments and Restricted Cash - Cash, Cash Equivalents, Short-term and Long-term Investments (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Cash	$ 212,622	$ 300,609
Money market funds	13,469	34,335
Certificates of deposit	139,361	0
Commercial paper	0	2,999
U.S. treasuries and government agency bonds	7,492	7,499
Total	744,539	597,974
Cash and cash equivalents	226,091	334,944
Short-term investments	515,947	260,169
Debt investment within other long-term assets	2,501	2,861
Corporate Debt Securities [Member]
Available-for-sale securities	369,094	249,671
Auction Rate Securities [Member]
Available-for-sale securities	$ 2,501	$ 2,861

Note 9 - Cash, Cash Equivalen_5

Note 9 - Cash, Cash Equivalents, Investments and Restricted Cash - Investment Maturity Classification (Details) $ in Thousands	Sep. 30, 2021USD ($)
Due in less than 1 year, Amortized cost	$ 113,987
Due in less than 1 year, fair value	114,265
Due in 1 - 5 years, Amortized cost	401,166
Due in 1 - 5 years	401,682
Due in greater than 5 years, Amortized cost	2,620
Due in greater than 5 years	2,501
Total, Amortized cost	517,773
Total	$ 518,448

Note 9 - Cash, Cash Equivalen_6

Note 9 - Cash, Cash Equivalents, Investments and Restricted Cash - Unrealized Gains and Losses on Investments (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Amortized Cost	$ 531,242	$ 295,444
Unrealized Gains	1,123	2,179
Unrealized Losses	(448)	(258)
Total Fair Value	531,917	297,365
Money Market Funds [Member]
Amortized Cost	13,469	34,335
Unrealized Gains	0	0
Unrealized Losses	0	0
Total Fair Value	13,469	34,335
Certificates of Deposit [Member]
Amortized Cost	139,361
Unrealized Gains	0
Unrealized Losses	0
Total Fair Value	139,361
Corporate Debt Securities [Member]
Amortized Cost	368,298	247,591
Unrealized Gains	1,122	2,177
Unrealized Losses	(326)	(97)
Total Fair Value	369,094	249,671
Commercial Paper [Member]
Amortized Cost		2,999
Unrealized Gains		0
Unrealized Losses		0
Total Fair Value		2,999
US Government Agencies Short-term Debt Securities [Member]
Amortized Cost	7,494	7,499
Unrealized Gains	1	2
Unrealized Losses	(3)	(2)
Total Fair Value	7,492	7,499
Auction Rate Securities [Member]
Amortized Cost	2,620	3,020
Unrealized Gains	0	0
Unrealized Losses	(119)	(159)
Total Fair Value	$ 2,501	$ 2,861

Note 9 - Cash, Cash Equivalen_7

Note 9 - Cash, Cash Equivalents, Investments and Restricted Cash - Continuous Unrealized Loss Position (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Continuous Unrealized Loss Position, Less than 12 Months	$ 196,621	$ 65,142
Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	(329)	(99)
Continuous Unrealized Loss Position, 12 Months or Longer	2,501	2,861
Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	(119)	(159)
Unrealized Loss Position, Total	199,122	68,003
Unrealized Loss Position, Accumulated Loss, Total	(448)	(258)
Corporate Debt Securities [Member]
Continuous Unrealized Loss Position, Less than 12 Months	190,629	59,144
Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	(326)	(97)
Continuous Unrealized Loss Position, 12 Months or Longer	0	0
Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	0	0
Unrealized Loss Position, Total	190,629	59,144
Unrealized Loss Position, Accumulated Loss, Total	(326)	(97)
US Treasury and Government Short-term Debt Securities [Member]
Continuous Unrealized Loss Position, Less than 12 Months	5,992
Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	(3)
Continuous Unrealized Loss Position, 12 Months or Longer	0
Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	0
Unrealized Loss Position, Total	5,992
Unrealized Loss Position, Accumulated Loss, Total	(3)
US Government Agencies Short-term Debt Securities [Member]
Continuous Unrealized Loss Position, Less than 12 Months		5,998
Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss		(2)
Continuous Unrealized Loss Position, 12 Months or Longer		0
Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss		0
Unrealized Loss Position, Total		5,998
Unrealized Loss Position, Accumulated Loss, Total		(2)
Auction Rate Securities [Member]
Continuous Unrealized Loss Position, Less than 12 Months	0	0
Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	0	0
Continuous Unrealized Loss Position, 12 Months or Longer	2,501	2,861
Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	(119)	(159)
Unrealized Loss Position, Total	2,501	2,861
Unrealized Loss Position, Accumulated Loss, Total	$ (119)	$ (159)

Note 9 - Cash, Cash Equivalen_8

Note 9 - Cash, Cash Equivalents, Investments and Restricted Cash - Restricted Cash (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020	Sep. 30, 2020	Dec. 31, 2019
Cash and cash equivalents	$ 226,091	$ 334,944
Restricted cash included in other long-term assets	120	127
Total cash, cash equivalents and restricted cash reported on the Condensed Consolidated Statements of Cash Flows	$ 226,211	$ 335,071	$ 179,588	$ 173,076

Note 10 - Fair Value Measurem_3

Note 10 - Fair Value Measurements - Financial Assets and Liabilities, Fair Value (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Total Fair Value	$ 531,917	$ 297,365
Assets, fair value	561,836	324,289
Fair Value, Inputs, Level 1 [Member]
Assets, fair value	43,388	61,259
Fair Value, Inputs, Level 2 [Member]
Assets, fair value	515,947	260,169
Fair Value, Inputs, Level 3 [Member]
Assets, fair value	2,501	2,861
Money Market Funds [Member]
Total Fair Value	13,469	34,335
Money Market Funds [Member] | Fair Value, Inputs, Level 1 [Member]
Total Fair Value	13,469	34,335
Money Market Funds [Member] | Fair Value, Inputs, Level 2 [Member]
Total Fair Value	0	0
Money Market Funds [Member] | Fair Value, Inputs, Level 3 [Member]
Total Fair Value	0	0
Certificates of Deposit [Member]
Total Fair Value	139,361
Certificates of Deposit [Member] | Fair Value, Inputs, Level 1 [Member]
Total Fair Value	0
Certificates of Deposit [Member] | Fair Value, Inputs, Level 2 [Member]
Total Fair Value	139,361
Certificates of Deposit [Member] | Fair Value, Inputs, Level 3 [Member]
Total Fair Value	0
Corporate Debt Securities [Member]
Total Fair Value	369,094	249,671
Corporate Debt Securities [Member] | Fair Value, Inputs, Level 1 [Member]
Total Fair Value	0	0
Corporate Debt Securities [Member] | Fair Value, Inputs, Level 2 [Member]
Total Fair Value	369,094	249,671
Corporate Debt Securities [Member] | Fair Value, Inputs, Level 3 [Member]
Total Fair Value	0	0
Commercial Paper [Member]
Total Fair Value		2,999
Commercial Paper [Member] | Fair Value, Inputs, Level 1 [Member]
Total Fair Value		0
Commercial Paper [Member] | Fair Value, Inputs, Level 2 [Member]
Total Fair Value		2,999
Commercial Paper [Member] | Fair Value, Inputs, Level 3 [Member]
Total Fair Value		0
US Government Agencies Short-term Debt Securities [Member]
Total Fair Value	7,492	7,499
US Government Agencies Short-term Debt Securities [Member] | Fair Value, Inputs, Level 1 [Member]
Total Fair Value	0	0
US Government Agencies Short-term Debt Securities [Member] | Fair Value, Inputs, Level 2 [Member]
Total Fair Value	7,492	7,499
US Government Agencies Short-term Debt Securities [Member] | Fair Value, Inputs, Level 3 [Member]
Total Fair Value	0	0
Auction Rate Securities [Member]
Total Fair Value	2,501	2,861
Auction Rate Securities [Member] | Fair Value, Inputs, Level 1 [Member]
Total Fair Value	0	0
Auction Rate Securities [Member] | Fair Value, Inputs, Level 2 [Member]
Total Fair Value	0	0
Auction Rate Securities [Member] | Fair Value, Inputs, Level 3 [Member]
Total Fair Value	2,501	2,861
Mutual Fund [Member]
Total Fair Value	29,919	26,924
Mutual Fund [Member] | Fair Value, Inputs, Level 1 [Member]
Total Fair Value	29,919	26,924
Mutual Fund [Member] | Fair Value, Inputs, Level 2 [Member]
Total Fair Value	0	0
Mutual Fund [Member] | Fair Value, Inputs, Level 3 [Member]
Total Fair Value	$ 0	$ 0

Note 11 - Deferred Compensati_3

Note 11 - Deferred Compensation Plan - Summary of Deferred Compensation Plan (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Deferred compensation plan assets	$ 50,641	$ 46,146
Deferred compensation plan liabilities	52,989	48,435
Other Long-term Assets [Member]
Deferred compensation plan assets	50,641	46,146
Accrued Compensation and Related Benefits [Member]
Deferred compensation plan liabilities	282	155
Other Long-term Liabilities [Member]
Deferred compensation plan liabilities	52,707	48,280
Cash Surrender Value [Member]
Deferred compensation plan assets	20,722	19,222
Mutual Funds and Money Market Funds, Fair Value [Member]
Deferred compensation plan assets	$ 29,919	$ 26,924

Note 12 - Other Expense, Net -

Note 12 - Other Expense, Net - Interest and Other Income Components (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Interest income	$ 3,050	$ 2,311	$ 8,102	$ 7,073
Amortization of premium on available-for-sale securities	(1,305)	(863)	(3,231)	(1,984)
Gain (loss) on deferred compensation plan investments	(399)	1,598	2,640	1,420
Foreign currency exchange loss	(171)	(759)	(544)	(889)
Other	(382)	207	(556)	360
Total	$ 793	$ 2,494	$ 6,411	$ 5,980

Note 13 - Income Taxes (Details

Note 13 - Income Taxes (Details Textual) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Income Tax Expense (Benefit), Total	$ 9,154	$ 6,907	$ 20,904	$ 3,412
Effective Income Tax Rate Reconciliation, Percent, Total	11.70%	11.10%	11.00%	2.70%

Note 14 - Accumulated Other C_3

Note 14 - Accumulated Other Comprehensive Income - Changes in Accumulated Other Comprehensive Income (Details) - USD ($) $ in Thousands	3 Months Ended
	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021
Balance	$ 1,087,355		$ 966,587
Balance	1,162,713	$ 1,087,355
AOCI, Accumulated Gain (Loss), Debt Securities, Available-for-sale, Parent [Member]
Balance	799	947	1,601
Other comprehensive income (loss) before reclassifications	(287)	(169)	(754)
Amounts reclassified from accumulated other comprehensive income	(13)		(24)
Tax effect	32	21	124
Net current period other comprehensive loss	(268)	(148)	(654)
Balance	531	799	947
Accumulated Foreign Currency Adjustment Attributable to Parent [Member]
Balance	11,502	6,065	8,539
Other comprehensive income (loss) before reclassifications	(371)	5,437	(2,474)
Amounts reclassified from accumulated other comprehensive income	0		0
Tax effect	0	0	0
Net current period other comprehensive loss	(371)	5,437	(2,474)
Balance	11,131	11,502	6,065
AOCI Attributable to Parent [Member]
Balance	12,301	7,012	10,140
Other comprehensive income (loss) before reclassifications	(658)	5,268	(3,228)
Amounts reclassified from accumulated other comprehensive income	(13)		(24)
Tax effect	32	21	124
Net current period other comprehensive loss	(639)	5,289	(3,128)
Balance	$ 11,662	$ 12,301	$ 7,012

Note 15 - Dividends and Divid_3

Note 15 - Dividends and Dividend Equivalents (Details Textual) - USD ($) $ in Millions	Sep. 30, 2021	Dec. 31, 2020
Dividends Payable, Current	$ 27.6	$ 22.6
Accrued Dividend Equivalents	$ 12.9	$ 11.7

Note 15 - Dividends and Divid_4

Note 15 - Dividends and Dividend Equivalents - Cash Dividends (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Dividend declared per share (in dollars per share)	$ 0.60	$ 0.50	$ 1.80	$ 1.50
Total amount	$ 27,606	$ 22,508	$ 82,501	$ 67,239