Cadence Design Systems (CDNS) 10-Q 22 Apr 19 2019 Q1 Quarterly report Financial data

Document and Entity Information

Document and Entity Information	3 Months Ended
	Mar. 30, 2019shares
Document and Entity Information [Abstract]
Entity Registrant Name	CADENCE DESIGN SYSTEMS INC
Entity Central Index Key	0000813672
Document Type	10-Q
Document Period End Date	Mar. 30, 2019
Amendment Flag	false
Document Fiscal Year Focus	2019
Document Fiscal Period Focus	Q1
Current Fiscal Year End Date	--12-28
Entity Filer Category	Large Accelerated Filer
Entity Emerging Growth Company	false
Entity Small Business	false
Entity Common Stock, Shares Outstanding	281,030,000

Condensed Consolidated Balance

Condensed Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Mar. 30, 2019	Dec. 29, 2018
Current Assets:
Cash and cash equivalents	$ 538,898	$ 533,298
Receivables, net	264,767	297,082
Inventories	37,480	28,162
Prepaid expenses and other	76,802	92,550
Total current assets	917,947	951,092
Property, plant and equipment, net of accumulated depreciation of $712,996 and $698,493, respectively	253,392	252,630
Goodwill	662,871	662,272
Acquired intangibles, net	212,298	225,457
Long-term receivables	3,241	5,972
Other assets	496,562	371,231
Total assets	2,546,311	2,468,654
Current Liabilities:
Revolving credit facility	50,000	100,000
Accounts payable and accrued liabilities	235,688	256,526
Current portion of deferred revenue	345,751	352,456
Total current liabilities	631,439	708,982
Long-Term Liabilities:
Long-term portion of deferred revenue	51,312	48,718
Long-term debt	345,470	345,291
Other long-term liabilities	152,253	77,262
Total long-term liabilities	549,035	471,271
Commitments and contingencies
Stockholders' Equity:
Common stock and capital in excess of par value	1,944,895	1,936,124
Treasury stock, at cost	(1,446,247)	(1,395,652)
Retained earnings	893,264	772,709
Accumulated other comprehensive loss	(26,075)	(24,780)
Total stockholders’ equity	1,365,837	1,288,401
Total liabilities and stockholders’ equity	$ 2,546,311	$ 2,468,654

Condensed Consolidated Balanc_2

Condensed Consolidated Balance Sheets (Unaudited) (Parenthetical) - USD ($) $ in Thousands	Mar. 30, 2019	Dec. 29, 2018
Statement of Financial Position [Abstract]
Accumulated depreciation on property, plant and equipment	$ 712,996	$ 698,493

Condensed Consolidated Income S

Condensed Consolidated Income Statements (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 30, 2019	Mar. 31, 2018
Revenues [Abstract]
Revenues	$ 576,742	$ 517,313
Costs and Expenses:
Marketing and sales	116,830	109,148
Research and development	228,210	224,185
General and administrative	30,102	33,299
Amortization of acquired intangibles	3,308	3,630
Restructuring and other credits	(689)	(1,991)
Total costs and expenses	448,346	431,480
Income from operations	128,396	85,833
Interest expense	5,391	6,975
Other income (expense), net	5,241	(689)
Income before provision for income taxes	128,246	78,169
Provision for income taxes	7,691	5,284
Net income	$ 120,555	$ 72,885
Net income per share – basic	$ 0.44	$ 0.27
Net income per share – diluted	$ 0.43	$ 0.26
Weighted average common shares outstanding – basic	273,066	273,773
Weighted average common shares outstanding – diluted	280,615	281,651
Product and maintenance [Member]
Revenues [Abstract]
Revenues	$ 543,518	$ 480,609
Costs and Expenses:
Cost of sales	50,522	41,730
Technology Service [Member]
Revenues [Abstract]
Revenues	33,224	36,704
Costs and Expenses:
Cost of sales	$ 20,063	$ 21,479

Condensed Consolidated Statemen

Condensed Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 30, 2019	Mar. 31, 2018
Statement of Comprehensive Income [Abstract]
Net income	$ 120,555	$ 72,885
Other comprehensive income (loss), net of tax effects:
Foreign currency translation adjustments	1,223	12,058
Changes in defined benefit plan liabilities	(2,518)	150
Total other comprehensive income (loss), net of tax effects	(1,295)	12,208
Comprehensive income	$ 119,260	$ 85,093

Condensed Consolidated Statem_2

Condensed Consolidated Statements of Stockholders' Equity (Unaudited) - USD ($) shares in Thousands, $ in Thousands	Total	Common Stock, Shares	Common Stock, Par Value and Capital in Excess of Par	Treasury Stock	Retained Earnings (Accumulated Deficit)	Accumulated Other Comprehensive Income (Loss)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Cumulative Effect adjustment	$ 83,291				$ 85,929	$ (2,638)
Beginning balance at Dec. 30, 2017	989,202		$ 1,829,950	$ (1,178,121)	341,003	(3,630)
Beginning balance, shares at Dec. 30, 2017		282,067
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income	72,885				72,885
Other Comprehensive Income (Loss), Net of Tax	$ 12,208					12,208
Purchase of treasury stock, shares	(1,289)	(1,289)
Purchase of treasury stock	$ (50,013)			(50,013)
Issuance of common stock and reissuance of treasury stock under equity incentive plans, net of forfeitures, shares		1,698
Issuance of common stock and reissuance of treasury stock under equity incentive plans, net of forfeitures	23,339		(5,087)	28,426
Stock Received for Payment of Employee Taxes on Vesting of Restricted Stock, shares		(570)
Stock Received for Payment of Employee Taxes on Vesting of Restricted Stock Value	(26,515)		(4,072)	(22,443)
Stock-based compensation expense	37,901		37,901
Ending balance at Mar. 31, 2018	1,142,298		1,858,692	(1,222,151)	499,817	5,940
Ending balance, shares at Mar. 31, 2018		281,906
Beginning balance at Dec. 29, 2018	1,288,401		1,936,124	(1,395,652)	772,709	(24,780)
Beginning balance, shares at Dec. 29, 2018		280,015
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income	120,555				120,555
Other Comprehensive Income (Loss), Net of Tax	$ (1,295)					(1,295)
Purchase of treasury stock, shares	(1,529)	(1,529)
Purchase of treasury stock	$ (81,114)			(81,114)
Issuance of common stock and reissuance of treasury stock under equity incentive plans, net of forfeitures, shares		3,075
Issuance of common stock and reissuance of treasury stock under equity incentive plans, net of forfeitures	29,859		(29,746)	59,605
Stock Received for Payment of Employee Taxes on Vesting of Restricted Stock, shares		(531)
Stock Received for Payment of Employee Taxes on Vesting of Restricted Stock Value	(32,822)		(3,736)	(29,086)
Stock-based compensation expense	42,253		42,253
Ending balance at Mar. 30, 2019	$ 1,365,837		$ 1,944,895	$ (1,446,247)	$ 893,264	$ (26,075)
Ending balance, shares at Mar. 30, 2019		281,030

Condensed Consolidated Statem_3

Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 30, 2019	Mar. 31, 2018
Statement of Cash Flows [Abstract]
Cash and cash equivalents at beginning of period	$ 533,298	$ 688,087
Cash flows from operating activities:
Net income	120,555	72,885
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	29,740	29,389
Amortization of debt discount and fees	247	292
Stock-based compensation	42,253	37,901
Gain on investments, net	(2,646)	(996)
Deferred income taxes	(4,966)	1,363
Provisions for losses (recoveries) on receivables	(183)	666
Other non-cash items	122	(170)
Changes in operating assets and liabilities:
Receivables	35,681	(10,988)
Inventories	(10,618)	2,105
Prepaid expenses and other	15,618	8,392
Other assets	10,729	8,025
Accounts payable and accrued liabilities	(43,954)	(46,956)
Deferred revenue	(4,451)	59,854
Other long-term liabilities	(2,713)	(4,115)
Net cash provided by operating activities	185,414	157,647
Cash flows from investing activities:
Purchases of non-marketable investments	(33,664)	0
Proceeds from the sale of non-marketable investments	2,952	0
Purchases of property, plant and equipment	(15,275)	(13,128)
Net cash used for investing activities	(45,987)	(13,128)
Cash flows from financing activities:
Proceeds from revolving credit facility	50,000	0
Payment on revolving credit facility	(100,000)	(40,000)
Proceeds from issuance of common stock	29,858	23,339
Stock received for payment of employee taxes on vesting of restricted stock	(32,822)	(26,515)
Payments for repurchases of common stock	(81,114)	(50,013)
Change in book overdraft	0	(3,867)
Net cash used for financing activities	(134,078)	(97,056)
Effect of exchange rate changes on cash and cash equivalents	251	11,418
Increase in cash and cash equivalents	5,600	58,881
Cash and cash equivalents at end of period	538,898	746,968
Supplemental cash flow information:
Cash paid for interest	1,324	2,716
Cash paid for taxes, net	$ 6,892	$ 6,025

Basis of Presentation

Basis of Presentation	3 Months Ended
	Mar. 30, 2019
Organization, Consolidation and Presentation of Financial Statements [Abstract]
BASIS OF PRESENTATION	BASIS OF PRESENTATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Basis of Presentation The condensed consolidated financial statements included in this Quarterly Report on Form 10-Q have been prepared by Cadence Design Systems, Inc. (“Cadence”) without audit, pursuant to the rules and regulations of the United States Securities and Exchange Commission (the “SEC”). Certain information and footnote disclosures normally included in consolidated financial statements prepared in accordance with United States generally accepted accounting principles (“U.S. GAAP”) have been condensed or omitted pursuant to such rules and regulations. However, Cadence believes that the disclosures contained in this Quarterly Report on Form 10-Q comply with the requirements of Section 13(a) of the Securities Exchange Act of 1934, as amended, (the “Exchange Act”) for a Quarterly Report on Form 10-Q and are adequate to make the information presented not misleading. These condensed consolidated financial statements are meant to be, and should be, read in conjunction with the consolidated financial statements and the Notes thereto included in Cadence’s Annual Report on Form 10-K for the fiscal year ended December 29, 2018 . The unaudited condensed consolidated financial statements included in this Quarterly Report on Form 10-Q reflect all adjustments (which include only normal, recurring adjustments and those items discussed in these Notes) that are, in the opinion of management, necessary to state fairly the results of operations, cash flows and financial position for the periods and dates presented. The results for such periods are not necessarily indicative of the results to be expected for the full fiscal year. Certain prior period balances have been reclassified to conform to the current year presentation. Management has evaluated subsequent events through the issuance date of the unaudited condensed consolidated financial statements. Use of Estimates Preparation of the condensed consolidated financial statements in conformity with U.S. 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 condensed consolidated financial statements and the reported amounts of revenue and expenses during the reporting period. Actual results could differ from those estimates. Comparability Effective the first day of fiscal 2019, Cadence adopted multiple new accounting standards. Prior periods were not retrospectively restated, so the condensed consolidated balance sheet as of March 30, 2019 was prepared using accounting standards that were different than those in effect as of December 29, 2018 . Therefore, the condensed consolidated balance sheets as of March 30, 2019 and December 29, 2018 are not directly comparable. Recently Adopted Accounting Standards Leases In February 2016, the Financial Accounting Standards Board (“FASB”) issued accounting standards update (“ASU”) 2016-02, “Leases (Topic 842)” (“Topic 842”), which requires the recognition of right-of-use assets and lease liabilities on the balance sheet. The most prominent of the changes in the standard is the recognition of right-of-use (“ROU”) assets and lease liabilities by lessees for those leases classified as operating leases. Cadence adopted the new standard on December 30, 2018, the first day of fiscal 2019, and used the modified retrospective approach with the effective date as the date of initial application. Consequently, prior period balances and disclosures have not been restated. Cadence elected certain practical expedients, which among other things, allowed us to carry forward prior conclusions about lease identification and classification. Adoption of the standard resulted in the balance sheet recognition of additional lease assets and lease liabilities of approximately $80 million ; however, the adoption of the standard did not have an impact on Cadence’s beginning retained earnings, results from operations or cash flows. Additionally, the new standard did not have a material impact on the condensed consolidated financial statements for arrangements in which Cadence is the lessor. For additional information regarding Cadence’s leases, see Note 6 in the notes to condensed consolidated financial statements. Income Tax Effects within Accumulated Other Comprehensive income

Debt

Debt	3 Months Ended
	Mar. 30, 2019
Debt Disclosure [Abstract]
DEBT	DEBT Cadence’s outstanding debt as of March 30, 2019 and December 29, 2018 was as follows: March 30, 2019 December 29, 2018 (In thousands) Principal Unamortized Discount Carrying Value Principal Unamortized Discount Carrying Value Revolving Credit Facility $ 50,000 $ — $ 50,000 $ 100,000 $ — $ 100,000 2024 Notes 350,000 (4,530 ) 345,470 350,000 (4,709 ) 345,291 Total outstanding debt $ 400,000 $ (4,530 ) $ 395,470 $ 450,000 $ (4,709 ) $ 445,291 Revolving Credit Facility In January 2017, Cadence entered into a five-year senior unsecured revolving credit facility with a group of lenders led by JPMorgan Chase Bank, N.A., as administrative agent. The credit facility provides for borrowings up to $350.0 million , with the right to request increased capacity up to an additional $250.0 million upon the receipt of lender commitments, for total maximum borrowings of $600.0 million . The credit facility expires on January 28, 2022 and has no subsidiary guarantors. Any outstanding loans drawn under the credit facility are due at maturity on January 28, 2022 . Outstanding borrowings may be paid at any time prior to maturity. Interest accrues on borrowings under the credit facility at either LIBOR plus a margin between 1.25% and 1.875% per annum or at the base rate plus a margin between 0.25% and 0.875% per annum. As of March 30, 2019, the interest rate on Cadence’s credit facility was 3.83% . Interest is payable quarterly. A commitment fee ranging from 0.15% to 0.30% is assessed on the daily average undrawn portion of revolving commitments. The credit facility contains customary negative covenants that, among other things, restrict Cadence’s ability to incur additional indebtedness, grant liens, make certain investments (including acquisitions), dispose of certain assets and make certain payments, including share repurchases and dividends. In addition, the credit facility contains financial covenants that require Cadence to maintain a funded debt to EBITDA ratio not greater than 3.00 to 1, with a step up to 3.50 to 1 for one year following an acquisition by Cadence of at least $250.0 million that results in a pro forma leverage ratio between 2.75 to 1 and 3.25 to 1. As of March 30, 2019 , Cadence was in compliance with all financial covenants associated with the revolving credit facility. 2024 Notes In October 2014, Cadence issued $350.0 million aggregate principal amount of 4.375% Senior Notes due October 15, 2024 (the “2024 Notes”). Cadence received net proceeds of $342.4 million from the issuance of the 2024 Notes, net of a discount of $1.4 million and issuance costs of $6.2 million . Both the discount and issuance costs are being amortized to interest expense over the term of the 2024 Notes using the effective interest method. Interest is payable in cash semi-annually in April and October. The 2024 Notes are unsecured and rank equal in right of payment to all of Cadence’s existing and future senior indebtedness. The carrying value of the 2024 Notes approximates the estimated fair value as of March 30, 2019 . Cadence may redeem the 2024 Notes, in whole or in part, at a redemption price equal to the greater of (a) 100% of the principal amount of the notes to be redeemed and (b) the sum of the present values of the remaining scheduled payments of principal and interest, plus any accrued and unpaid interest, as more particularly described in the indenture governing the 2024 Notes.

Receivables, net

Receivables, net	3 Months Ended
	Mar. 30, 2019
Receivables [Abstract]
RECEIVABLES, NET	RECEIVABLES, NET Cadence’s current and long-term receivables balances as of March 30, 2019 and December 29, 2018 were as follows: As of March 30, December 29, (In thousands) Accounts receivable $ 161,922 $ 164,223 Unbilled accounts receivable 106,411 136,795 Long-term receivables 3,241 5,972 Total receivables 271,574 306,990 Less allowance for doubtful accounts (3,566 ) (3,936 ) Total receivables, net $ 268,008 $ 303,054 Cadence’s customers are primarily concentrated within the semiconductor and electronics systems industries. As of March 30, 2019 , no customer accounted for 10% or more of Cadence’s total receivables. As of December 29, 2018 , one customer accounted for 11%

Revenue

Revenue	3 Months Ended
	Mar. 30, 2019
Revenue from Contract with Customer [Abstract]
REVENUE	REVENUE Cadence combines its products and technologies into five product groups related to major design activities. The following table shows the percentage of product and related maintenance revenue contributed by each of Cadence’s five product groups and services for the three months ended March 30, 2019 and March 31, 2018 : Three Months Ended March 30, March 31, Functional Verification, including Emulation and Prototyping Hardware 1 24 % 26 % Digital IC Design and Signoff 30 % 30 % Custom IC Design and Simulation 25 % 26 % System Interconnect and Analysis 9 % 9 % IP 12 % 9 % Total 100 % 100 % _____________ 1 Includes immaterial amount of revenue accounted for under Topic 842. Revenue by product group fluctuates from period to period based on demand for products and services, and Cadence’s available resources to deliver them. Certain of Cadence’s licensing arrangements allow customers the ability to remix among software products. Cadence also has arrangements with customers that include a combination of products, with the actual product selection and number of licensed users to be determined at a later date. For these arrangements, Cadence estimates the allocation of the revenue to product groups based upon the expected usage of products. Significant Judgments Cadence’s contracts with customers often include promises to transfer to a customer multiple software and/or IP licenses and services, including professional services, technical support services, and rights to unspecified updates. Determining whether licenses and services are distinct performance obligations that should be accounted for separately, or not distinct and thus accounted for together, requires significant judgment. In some arrangements, such as most of Cadence’s IP license arrangements, Cadence has concluded that the licenses and associated services are distinct from each other. In others, like Cadence’s time-based software arrangements, the licenses and certain services are not distinct from each other. Cadence’s time-based software arrangements include multiple software licenses and updates to the licensed software products, as well as technical support, and Cadence has concluded that these promised goods and services are a single, combined performance obligation. Judgment is required to determine the standalone selling price (“SSP”) for each distinct performance obligation. Cadence rarely licenses or sells products on a standalone basis, so Cadence is required to estimate the SSP for each performance obligation. In instances where the SSP is not directly observable because Cadence does not sell the license, product or service separately, Cadence determines the SSP using information that maximizes the use of observable inputs and may include market conditions. Cadence typically has more than one SSP for individual performance obligations due to the stratification of those items by classes of customers and circumstances. In these instances, Cadence may use information such as the size of the customer and geographic region of the customer in determining the SSP. Revenue is recognized over time for Cadence’s combined performance obligations that include software licenses, updates, technical support and maintenance that are separate performance obligations. For Cadence’s professional services, revenue is recognized over time, generally using costs incurred or hours expended to measure progress. Judgment is required in estimating project status and the costs necessary to complete projects. A number of internal and external factors can affect these estimates, including labor rates, utilization and efficiency variances and specification and testing requirement changes. For Cadence’s other performance obligations recognized over time, revenue is generally recognized using a time-based measure of progress reflecting generally consistent efforts to satisfy those performance obligations throughout the arrangement term. If a group of agreements are so closely related that they are, in effect, part of a single arrangement, such agreements are deemed to be one arrangement for revenue recognition purposes. Cadence exercises significant judgment to evaluate the relevant facts and circumstances in determining whether the separate agreements should be accounted for separately or as, in substance, a single arrangement. Cadence’s judgments about whether a group of contracts comprise a single arrangement can affect the allocation of consideration to the distinct performance obligations, which could have an effect on results of operations for the periods involved. Cadence is required to estimate the total consideration expected to be received from contracts with customers. In limited circumstances, the consideration expected to be received is variable based on the specific terms of the contract or based on Cadence’s expectations of the term of the contract. Generally, Cadence has not experienced significant returns or refunds to customers. These estimates require significant judgment and the change in these estimates could have an effect on its results of operations during the periods involved. Contract Balances The timing of revenue recognition may differ from the timing of invoicing to customers, and these timing differences result in receivables, contract assets, or contract liabilities (deferred revenue) on Cadence’s condensed consolidated balance sheets. For certain software, hardware and IP agreements with payment plans, Cadence records an unbilled receivable related to revenue recognized upon transfer of control because it has an unconditional right to invoice and receive payment in the future related to those transferred products or services. Cadence records a contract asset when revenue is recognized prior to invoicing and Cadence does not have the unconditional right to invoice or retains performance risk with respect to that performance obligation. Cadence records deferred revenue when revenue is recognized subsequent to invoicing. For Cadence’s time-based software agreements, customers are generally invoiced in equal, quarterly amounts, although some customers prefer to be invoiced in single or annual amounts. The contract assets indicated below are presented as prepaid expenses and other in the condensed consolidated balance sheet and primarily relate to Cadence’s rights to consideration for work completed but not billed as of March 30, 2019 on services and customized IP contracts. The contract assets are transferred to receivables when the rights become unconditional, usually upon completion of a milestone. Cadence’s contract balances as of March 30, 2019 and December 29, 2018 were as follows: As of March 30, December 29, (In thousands) Contract assets $ 12,211 $ 10,055 Deferred revenue 397,063 401,174 During the three months ended March 30, 2019 and March 31, 2018 , Cadence recognized revenue of $157.9 million and $142.6 million , respectively, that was included in the deferred revenue balance at the beginning of the period. All other activity in deferred revenue is due to the timing of invoices in relation to the timing of revenue as described above. Revenue allocated to remaining performance obligations represents the transaction price allocated to the performance obligations that are unsatisfied, or partially unsatisfied, which includes unearned revenue and amounts that will be invoiced and recognized as revenue in future periods. Cadence has elected to exclude the future royalty payments from the remaining performance obligations. Contracted but unsatisfied performance obligations were approximately $2.8 billion as of March 30, 2019 , of which Cadence expects to recognize approximately 60% of the revenue over the next 12 months and the remainder thereafter. Payment terms and conditions vary by contract type, although terms generally include a requirement of payment within 30 to 60 days. In instances where the timing of revenue recognition differs from the timing of invoicing, Cadence has determined that its contracts generally do not include a significant financing component. The primary purpose of invoicing terms is to provide customers with simplified and predictable ways of purchasing Cadence’s products and services, and not to facilitate financing arrangements. During the three months ended March 30, 2019 and March 31, 2018 , Cadence recognized revenue of $8.5 million and $6.2 million

Goodwill and Acquired Intangibl

Goodwill and Acquired Intangibles	3 Months Ended
	Mar. 30, 2019
Goodwill and Intangible Assets Disclosure [Abstract]
GOODWILL AND ACQUIRED INTANGIBLES	GOODWILL AND ACQUIRED INTANGIBLES Goodwill The changes in the carrying amount of goodwill during the three months ended March 30, 2019 were as follows: Gross Carrying Amount (In thousands) Balance as of December 29, 2018 $ 662,272 Effect of foreign currency translation 599 Balance as of March 30, 2019 $ 662,871 Acquired Intangibles, Net Acquired intangibles as of March 30, 2019 were as follows, excluding intangibles that were fully amortized as of December 29, 2018 : Gross Carrying Amount Accumulated Amortization Acquired Intangibles, Net (In thousands) Existing technology $ 363,143 $ (215,612 ) $ 147,531 Agreements and relationships 146,448 (103,596 ) 42,852 Tradenames, trademarks and patents 7,600 (5,185 ) 2,415 Total acquired intangibles with definite lives 517,191 (324,393 ) 192,798 In-process technology 19,500 — 19,500 Total acquired intangibles $ 536,691 $ (324,393 ) $ 212,298 In-process technology as of March 30, 2019 consisted of acquired projects that, if completed, will contribute to Cadence’s design IP offerings. As of March 30, 2019 , these projects were expected to be completed in approximately twelve months. During the three months ended March 30, 2019 , Cadence completed certain projects previously included in in-process technology and transferred approximately $52.0 million to existing technology. Acquired intangibles as of December 29, 2018 were as follows, excluding intangibles that were fully amortized as of December 30, 2017 : Gross Carrying Amount Accumulated Amortization Acquired Intangibles, Net (In thousands) Existing technology $ 330,500 $ (225,383 ) $ 105,117 Agreements and relationships 146,426 (100,211 ) 46,215 Tradenames, trademarks and patents 10,718 (8,093 ) 2,625 Total acquired intangibles with definite lives 487,644 (333,687 ) 153,957 In-process technology 71,500 — 71,500 Total acquired intangibles $ 559,144 $ (333,687 ) $ 225,457 Amortization expense from existing technology and maintenance agreements is included in cost of product and maintenance. Amortization of acquired intangibles for the three months ended March 30, 2019 and March 31, 2018 was as follows: Three Months Ended March 30, March 31, (In thousands) Cost of product and maintenance $ 9,854 $ 10,277 Amortization of acquired intangibles 3,308 3,630 Total amortization of acquired intangibles $ 13,162 $ 13,907 Estimated amortization expense for acquired intangible assets with definite lives for the following five fiscal years and thereafter is as follows: (In thousands) 2019 – remaining period $ 39,919 2020 49,422 2021 44,758 2022 26,453 2023 13,967 Thereafter 18,279 Total estimated amortization expense $ 192,798

Leases

Leases	3 Months Ended
	Mar. 30, 2019
Leases [Abstract]
Leases [Text Block]	LEASES Lessee Considerations Under Topic 842, operating lease expense is generally recognized evenly over the term of the lease. Cadence has operating leases primarily consisting of facilities with remaining lease terms of one year to twelve years . Cadence has options to terminate many of its leases early. The lease term represents the period up to the early termination date unless it is reasonably certain that Cadence will not exercise the early termination option. For certain leases, Cadence has options to extend the lease term for additional periods ranging from one year to ten years . These renewal options are not considered in the remaining lease term unless it is reasonably certain that Cadence will exercise such options. Certain leases include rental payments that are adjusted periodically based on changes in consumer price and other indices. Leases with an initial term of twelve months or less are not recorded on the balance sheet. For lease agreements entered into or reassessed after the adoption of Topic 842, Cadence combines the lease and non-lease components in determining the lease liabilities and ROU assets. Activity related to Cadence’s leases was as follows: Three Months Ended March 30, (In thousands) Operating lease expense $ 7,681 Cash paid for amounts included in the measurement of operating lease liabilities 6,296 ROU assets obtained in exchange for operating lease obligations 17,505 Cadence’s lease agreements generally do not provide an implicit borrowing rate, therefore an internal incremental borrowing rate is determined based on information available at lease commencement date for purposes of determining the present value of lease payments. Cadence used the incremental borrowing rate on December 29, 2018 for all leases that commenced prior to that date. ROU lease assets and lease liabilities for Cadence’s operating leases were recorded in the condensed consolidated balance sheet as follows: As of March 30, 2019 (In thousands) Other assets $ 94,223 Accounts payable and accrued liabilities $ 23,783 Other long-term liabilities 81,337 Total lease liabilities $ 105,120 Weighted average remaining lease term (in years) 5.0 Weighted average discount rate 4.6 % Future lease payments included in the measurement of lease liabilities on the condensed consolidated balance sheet as of March 30, 2019 , for the following five fiscal years and thereafter were as follows: Operating Leases (In thousands) 2019 – remaining period $ 20,543 2020 26,618 2021 24,240 2022 17,627 2023 12,529 Thereafter 17,152 Total future minimum lease payments 118,709 Less imputed interest (13,589 ) Total $ 105,120 As of March 30, 2019 , Cadence had additional operating lease obligations for a lease with a future effective date of $1.0 million . This operating lease will commence during the third quarter of fiscal 2019 with a lease term of five years . As of December 29, 2018 , future minimum lease payments, as defined under the previous lease accounting guidance of ASC Topic 840, under non-cancelable operating leases for the following five fiscal years and thereafter were as follows: Operating Leases (In thousands) 2019 $ 26,252 2020 23,130 2021 19,778 2022 14,243 2023 11,510 Thereafter 17,100 Total lease payments $ 112,013 Lessor Considerations Although most of Cadence’s revenue from its hardware business comes from sales of hardware, Cadence also leases its hardware products to some customers. Cadence determines the existence of a lease when the customer controls the use of the identified hardware for a period of time defined in the lease agreement. Cadence’s leases range in duration up to four years with payments generally collected in equal quarterly installments. Cadence’s leases do not include termination rights or variable pricing and typically do not include purchase rights at the end of the lease. Short-term leases are usually less than two years and are classified as operating leases with revenue recognized and depreciation expensed on a straight-line basis over the term of the lease. Long-term leases are typically for three to four years and are classified as sales-type leases with revenue and cost of sales recognized upon delivery.

Balance sheet components

Balance sheet components	3 Months Ended
	Mar. 30, 2019
Balance Sheet Components [Abstract]
BALANCE SHEET COMPONENTS	BALANCE SHEET COMPONENTS A summary of certain balance sheet components as of March 30, 2019 and December 29, 2018 is as follows: As of March 30, December 29, (In thousands) Other assets: Deferred income taxes $ 159,735 $ 154,894 Non-marketable investments 1 150,369 118,734 ROU lease assets 2 94,223 — Other long-term assets 92,235 97,603 Other assets $ 496,562 $ 371,231 Other long-term liabilities: Operating lease liabilities 2 $ 81,337 $ — Other long-term accrued liabilities 70,916 77,262 Other long-term liabilities $ 152,253 $ 77,262 _____________ 1 In January 2019, Cadence made an additional minority equity investment in a privately held company and existing equity method investee, for approximately $33.6 million , bringing Cadence’s total ownership to approximately 16% . 2

Stock Based Compensation

Stock Based Compensation	3 Months Ended
	Mar. 30, 2019
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
STOCK-BASED COMPENSATION	STOCK-BASED COMPENSATION Stock-based compensation expense is reflected in Cadence’s condensed consolidated income statements for the three months ended March 30, 2019 and March 31, 2018 as follows: Three Months Ended March 30, March 31, (In thousands) Cost of product and maintenance $ 681 $ 590 Cost of services 866 863 Marketing and sales 9,106 7,614 Research and development 26,898 23,235 General and administrative 4,702 5,599 Total stock-based compensation expense $ 42,253 $ 37,901 Cadence had total unrecognized compensation expense related to stock option and restricted stock grants of $289.9 million as of March 30, 2019 , which will be recognized over the remaining vesting period. The remaining weighted-average vesting period of unvested awards is 2.3 years

Stock Repurchase Program

Stock Repurchase Program	3 Months Ended
	Mar. 30, 2019
Class of Stock Disclosures [Abstract]
STOCK REPURCHASE PROGRAM	STOCK REPURCHASE PROGRAM As of the end of the fourth quarter of fiscal 2018, approximately $175 million remained available under Cadence’s previously announced authorization to repurchase shares of its common stock. In February 2019, Cadence’s Board of Directors authorized the repurchase of an additional $500 million . The actual timing and amount of repurchases are subject to business and market conditions, corporate and regulatory requirements, stock price, acquisition opportunities and other factors. As of March 30, 2019 , approximately $594 million remained available to repurchase shares of Cadence common stock under current authorizations. The shares repurchased under Cadence’s repurchase authorizations and the total cost of repurchased shares, including commissions, during the three months ended March 30, 2019 and March 31, 2018 were as follows: Three Months Ended March 30, March 31, (In thousands) Shares repurchased 1,529 1,289 Total cost of repurchased shares $ 81,114 $ 50,013

Restructuring and Other Charges

Restructuring and Other Charges	3 Months Ended
	Mar. 30, 2019
Restructuring and Related Activities [Abstract]
RESTRUCTURING AND OTHER CHARGES	RESTRUCTURING AND OTHER CHARGES Cadence has initiated restructuring plans in an effort to better align its resources with its business strategy. These restructuring plans have primarily been comprised of severance payments and termination benefits related to headcount reductions, estimated lease losses related to facilities vacated under the restructuring plans and charges related to assets abandoned as part of the restructuring plans. During the three months ended March 30, 2019 , Cadence revised certain estimates made in connection with its prior restructuring plans and recorded credits of approximately $0.7 million . The following table presents activity relating to Cadence’s restructuring plans during the three months ended March 30, 2019 : Severance and Benefits Excess Facilities Total (In thousands) Balance, December 29, 2018 $ 11,176 $ 848 $ 12,024 Restructuring and other charges (credits) (687 ) (2 ) (689 ) Cash payments (7,986 ) (262 ) (8,248 ) Effect of foreign currency translation 34 7 41 Balance, March 30, 2019 $ 2,537 $ 591 $ 3,128 The remaining liability for Cadence’s restructuring plans is recorded in the condensed consolidated balance sheet as follows: As of March 30, 2019 (In thousands) Accounts payable and accrued liabilities $ 2,888 Other long-term liabilities 240 Total restructuring liabilities $ 3,128 All liabilities for severance and related benefits under Cadence’s restructuring plans are included in accounts payable and accrued liabilities on Cadence’s condensed consolidated balance sheet as of March 30, 2019

Net Income per Share

Net Income per Share	3 Months Ended
	Mar. 30, 2019
Earnings Per Share [Abstract]
NET INCOME PER SHARE	NET INCOME PER SHARE Basic net income per share is computed by dividing net income during the period by the weighted-average number of shares of common stock outstanding during that period, less unvested restricted stock awards. Diluted net income per share is impacted by equity instruments considered to be potential common shares, if dilutive, computed using the treasury stock method of accounting. The calculations for basic and diluted net income per share for the three months ended March 30, 2019 and March 31, 2018 are as follows: Three Months Ended March 30, March 31, (In thousands, except per share amounts) Net income $ 120,555 $ 72,885 Weighted average common shares used to calculate basic net income per share 273,066 273,773 Stock-based awards 7,549 7,878 Weighted average common shares used to calculate diluted net income per share 280,615 281,651 Net income per share - basic $ 0.44 $ 0.27 Net income per share - diluted $ 0.43 $ 0.26 The following table presents shares of Cadence’s common stock outstanding for the three months ended March 30, 2019 and March 31, 2018 that were excluded from the computation of diluted net income per share because the effect of including these shares in the computation of diluted net income per share would have been anti-dilutive: Three Months Ended March 30, March 31, (In thousands) Long-term performance-based stock awards 228 150 Options to purchase shares of common stock 242 416 Non-vested shares of restricted stock 122 279 Total potential common shares excluded 592 845

Fair Value

Fair Value	3 Months Ended
	Mar. 30, 2019
Fair Value Disclosures [Abstract]
FAIR VALUE	FAIR VALUE Inputs to valuation techniques are observable or unobservable. Observable inputs reflect market data obtained from independent sources, while unobservable inputs reflect Cadence’s market assumptions. These two types of inputs have created the following fair value hierarchy: • Level 1 – Quoted prices for identical instruments in active markets; • Level 2 – Quoted prices for similar instruments in active markets, quoted prices for identical or similar instruments in markets that are not active, and model-derived valuations in which all significant inputs and significant value drivers are observable in active markets; and • Level 3 – Valuations derived from valuation techniques in which one or more significant inputs or significant value drivers are unobservable. The valuation techniques used to determine the fair value of Cadence’s 2024 Notes are classified within Level 2 of the fair value hierarchy. For additional information relating to Cadence’s debt arrangements, see Note 2 in the notes to condensed consolidated financial statements. This hierarchy requires Cadence to minimize the use of unobservable inputs and to use observable market data, if available, when determining fair value. Cadence recognizes transfers between levels of the hierarchy based on the fair values of the respective financial instruments at the end of the reporting period in which the transfer occurred. There were no transfers between levels of the fair value hierarchy during the three months ended March 30, 2019 . On a quarterly basis, Cadence measures at fair value certain financial assets and liabilities. The fair value of financial assets and liabilities was determined using the following levels of inputs as of March 30, 2019 and December 29, 2018 : Fair Value Measurements as of March 30, 2019 Total Level 1 Level 2 Level 3 (In thousands) Assets Cash equivalents: Money market funds $ 331,994 $ 331,994 $ — $ — Marketable equity securities 3,969 3,969 — — Securities held in Non-Qualified Deferred Compensation (“NQDC”) trust 28,402 28,402 — — Total Assets $ 364,365 $ 364,365 $ — $ — Total Level 1 Level 2 Level 3 (In thousands) Liabilities Foreign currency exchange contracts $ 458 $ — $ 458 $ — Total Liabilities $ 458 $ — $ 458 $ — Fair Value Measurements as of December 29, 2018 Total Level 1 Level 2 Level 3 (In thousands) Assets Cash equivalents: Money market funds $ 327,841 $ 327,841 $ — $ — Marketable equity securities 3,887 3,887 — — Securities held in NQDC trust 27,767 27,767 — — Foreign currency exchange contracts 101 — 101 — Total Assets $ 359,596 $ 359,495 $ 101 $ — As of December 29, 2018, Cadence did not have any financial liabilities requiring a recurring fair value measurement.

Commitments and Contingencies

Commitments and Contingencies	3 Months Ended
	Mar. 30, 2019
Commitments and Contingencies Disclosure [Abstract]
COMMITMENTS AND CONTINGENCIES	CONTINGENCIES Legal Proceedings From time to time, Cadence is involved in various disputes and litigation that arise in the ordinary course of business. These include disputes and lawsuits related to intellectual property, indemnification obligations, mergers and acquisitions, licensing, contracts, distribution arrangements and employee relations matters. At least quarterly, Cadence reviews the status of each significant matter and assesses its potential financial exposure. If the potential loss from any claim or legal proceeding is considered probable and the amount or the range of loss can be estimated, Cadence accrues a liability for the estimated loss. Legal proceedings are subject to uncertainties, and the outcomes are difficult to predict. Because of such uncertainties, accruals are based on Cadence’s judgments using the best information available at the time. As additional information becomes available, Cadence reassesses the potential liability related to pending claims and litigation matters and may revise estimates. Other Contingencies Cadence provides its customers with a warranty on sales of its hardware products, generally for a 90 -day period. Cadence did not incur any significant costs related to warranty obligations during the three months ended March 30, 2019 and March 31, 2018 . Cadence’s product license and services agreements typically include a limited indemnification provision for claims from third parties relating to Cadence’s intellectual property. If the potential loss from any indemnification claim is considered probable and the amount or the range of loss can be estimated, Cadence accrues a liability for the estimated loss. The indemnification is generally limited to the amount paid by the customer. Cadence did not incur any significant losses from indemnification claims during the three months ended March 30, 2019 and March 31, 2018

Accumulated Other Comprehensive

Accumulated Other Comprehensive Loss	3 Months Ended
	Mar. 30, 2019
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
OTHER COMPREHENSIVE LOSS	ACCUMULATED OTHER COMPREHENSIVE LOSS Cadence’s accumulated other comprehensive loss is comprised of the aggregate impact of foreign currency translation gains and losses and changes in defined benefit plan liabilities and is presented in Cadence’s condensed consolidated statements of comprehensive income. Accumulated other comprehensive loss was comprised of the following as of March 30, 2019 and December 29, 2018 : As of March 30, December 29, (In thousands) Foreign currency translation loss $ (19,638 ) $ (20,861 ) Changes in defined benefit plan liabilities (6,437 ) (3,919 ) Total accumulated other comprehensive loss $ (26,075 ) $ (24,780 ) For the three months ended March 30, 2019 and March 31, 2018

Segment Reporting

Segment Reporting	3 Months Ended
	Mar. 30, 2019
Segment Reporting [Abstract]
SEGMENT REPORTING	SEGMENT REPORTING Segment reporting is based on the “management approach,” following the method that management organizes the company’s reportable segments for which separate financial information is made available to, and evaluated regularly by, the chief operating decision maker in allocating resources and in assessing performance. Cadence’s chief operating decision maker is its CEO, who reviews Cadence’s consolidated results as one operating segment. In making operating decisions, the CEO primarily considers consolidated financial information, accompanied by disaggregated information about revenues by geographic region. Outside the United States, Cadence markets and supports its products and services primarily through its subsidiaries. Revenue is attributed to geography based upon the country in which the product is used or services are delivered. Long-lived assets are attributed to geography based on the country where the assets are located. The following table presents a summary of revenue by geography for the three months ended March 30, 2019 and March 31, 2018 : Three Months Ended March 30, March 31, (In thousands) Americas: United States $ 243,248 $ 224,803 Other Americas 8,406 7,666 Total Americas 251,654 232,469 Asia: China 58,976 45,294 Other Asia 111,348 94,653 Total Asia 170,324 139,947 Europe, Middle East and Africa 103,462 104,708 Japan 51,302 40,189 Total $ 576,742 $ 517,313 The following table presents a summary of long-lived assets by geography as of March 30, 2019 and December 29, 2018 : As of March 30, December 29, (In thousands) Americas: United States $ 198,168 $ 200,025 Other Americas 506 475 Total Americas 198,674 200,500 Asia: China 15,064 9,608 Other Asia 28,180 30,021 Total Asia 43,244 39,629 Europe, Middle East and Africa 10,830 11,784 Japan 644 717 Total $ 253,392 $ 252,630

Basis of Presentation (Policies

Basis of Presentation (Policies)	3 Months Ended
	Mar. 30, 2019
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Use of Estimates	Use of EstimatesPreparation of the condensed consolidated financial statements in conformity with U.S. 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 condensed consolidated financial statements and the reported amounts of revenue and expenses during the reporting period. Actual results could differ from those estimates.
Comparability	Comparability Effective the first day of fiscal 2019, Cadence adopted multiple new accounting standards. Prior periods were not retrospectively restated, so the condensed consolidated balance sheet as of March 30, 2019 was prepared using accounting standards that were different than those in effect as of December 29, 2018 . Therefore, the condensed consolidated balance sheets as of March 30, 2019 and December 29, 2018
Recently Adopted Accounting Standards	Recently Adopted Accounting Standards Leases In February 2016, the Financial Accounting Standards Board (“FASB”) issued accounting standards update (“ASU”) 2016-02, “Leases (Topic 842)” (“Topic 842”), which requires the recognition of right-of-use assets and lease liabilities on the balance sheet. The most prominent of the changes in the standard is the recognition of right-of-use (“ROU”) assets and lease liabilities by lessees for those leases classified as operating leases. Cadence adopted the new standard on December 30, 2018, the first day of fiscal 2019, and used the modified retrospective approach with the effective date as the date of initial application. Consequently, prior period balances and disclosures have not been restated. Cadence elected certain practical expedients, which among other things, allowed us to carry forward prior conclusions about lease identification and classification. Adoption of the standard resulted in the balance sheet recognition of additional lease assets and lease liabilities of approximately $80 million ; however, the adoption of the standard did not have an impact on Cadence’s beginning retained earnings, results from operations or cash flows. Additionally, the new standard did not have a material impact on the condensed consolidated financial statements for arrangements in which Cadence is the lessor. For additional information regarding Cadence’s leases, see Note 6 in the notes to condensed consolidated financial statements. Income Tax Effects within Accumulated Other Comprehensive income
Contingencies	At least quarterly, Cadence reviews the status of each significant matter and assesses its potential financial exposure. If the potential loss from any claim or legal proceeding is considered probable and the amount or the range of loss can be estimated, Cadence accrues a liability for the estimated loss. Legal proceedings are subject to uncertainties, and the outcomes are difficult to predict. Because of such uncertainties, accruals are based on Cadence’s judgments using the best information available at the time. As additional information becomes available, Cadence reassesses the potential liability related to pending claims and litigation matters and may revise estimates.
Fair Value of Financial Instruments	Inputs to valuation techniques are observable or unobservable. Observable inputs reflect market data obtained from independent sources, while unobservable inputs reflect Cadence’s market assumptions. These two types of inputs have created the following fair value hierarchy: • Level 1 – Quoted prices for identical instruments in active markets; • Level 2 – Quoted prices for similar instruments in active markets, quoted prices for identical or similar instruments in markets that are not active, and model-derived valuations in which all significant inputs and significant value drivers are observable in active markets; and • Level 3 – Valuations derived from valuation techniques in which one or more significant inputs or significant value drivers are unobservable. The valuation techniques used to determine the fair value of Cadence’s 2024 Notes are classified within Level 2 of the fair value hierarchy. For additional information relating to Cadence’s debt arrangements, see Note 2 in the notes to condensed consolidated financial statements. This hierarchy requires Cadence to minimize the use of unobservable inputs and to use observable market data, if available, when determining fair value. Cadence recognizes transfers between levels of the hierarchy based on the fair values of the respective financial instruments at the end of the reporting period in which the transfer occurred. There were no transfers between levels of the fair value hierarchy during the three months ended March 30, 2019 .
Leases of Lessee	Leases with an initial term of twelve months or less are not recorded on the balance sheet.

Debt (Tables)

Debt (Tables)	3 Months Ended
	Mar. 30, 2019
Debt Disclosure [Abstract]
Summary of debt outstanding	Cadence’s outstanding debt as of March 30, 2019 and December 29, 2018 was as follows: March 30, 2019 December 29, 2018 (In thousands) Principal Unamortized Discount Carrying Value Principal Unamortized Discount Carrying Value Revolving Credit Facility $ 50,000 $ — $ 50,000 $ 100,000 $ — $ 100,000 2024 Notes 350,000 (4,530 ) 345,470 350,000 (4,709 ) 345,291 Total outstanding debt $ 400,000 $ (4,530 ) $ 395,470 $ 450,000 $ (4,709 ) $ 445,291

Receivables, net (Tables)

Receivables, net (Tables)	3 Months Ended
	Mar. 30, 2019
Receivables [Abstract]
Current and long-term accounts receivable balances	Cadence’s current and long-term receivables balances as of March 30, 2019 and December 29, 2018 were as follows: As of March 30, December 29, (In thousands) Accounts receivable $ 161,922 $ 164,223 Unbilled accounts receivable 106,411 136,795 Long-term receivables 3,241 5,972 Total receivables 271,574 306,990 Less allowance for doubtful accounts (3,566 ) (3,936 ) Total receivables, net $ 268,008 $ 303,054

Revenue (Tables)

Revenue (Tables)	3 Months Ended
	Mar. 30, 2019
Revenue from Contract with Customer [Abstract]
Revenue from external customers by product group	The following table shows the percentage of product and related maintenance revenue contributed by each of Cadence’s five product groups and services for the three months ended March 30, 2019 and March 31, 2018 : Three Months Ended March 30, March 31, Functional Verification, including Emulation and Prototyping Hardware 1 24 % 26 % Digital IC Design and Signoff 30 % 30 % Custom IC Design and Simulation 25 % 26 % System Interconnect and Analysis 9 % 9 % IP 12 % 9 % Total 100 % 100 %
Contract Balances	Cadence’s contract balances as of March 30, 2019 and December 29, 2018 were as follows: As of March 30, December 29, (In thousands) Contract assets $ 12,211 $ 10,055 Deferred revenue 397,063 401,174

Goodwill and Acquired Intangi_2

Goodwill and Acquired Intangibles (Tables)	3 Months Ended
	Mar. 30, 2019
Goodwill and Intangible Assets Disclosure [Abstract]
Changes in the carrying amount of goodwill	The changes in the carrying amount of goodwill during the three months ended March 30, 2019 were as follows: Gross Carrying Amount (In thousands) Balance as of December 29, 2018 $ 662,272 Effect of foreign currency translation 599 Balance as of March 30, 2019 $ 662,871
Schedule of acquired intangibles with finite and indefinite lives (excluding goodwill)	Acquired intangibles as of December 29, 2018 were as follows, excluding intangibles that were fully amortized as of December 30, 2017 : Gross Carrying Amount Accumulated Amortization Acquired Intangibles, Net (In thousands) Existing technology $ 330,500 $ (225,383 ) $ 105,117 Agreements and relationships 146,426 (100,211 ) 46,215 Tradenames, trademarks and patents 10,718 (8,093 ) 2,625 Total acquired intangibles with definite lives 487,644 (333,687 ) 153,957 In-process technology 71,500 — 71,500 Total acquired intangibles $ 559,144 $ (333,687 ) $ 225,457 March 30, 2019 were as follows, excluding intangibles that were fully amortized as of December 29, 2018 : Gross Carrying Amount Accumulated Amortization Acquired Intangibles, Net (In thousands) Existing technology $ 363,143 $ (215,612 ) $ 147,531 Agreements and relationships 146,448 (103,596 ) 42,852 Tradenames, trademarks and patents 7,600 (5,185 ) 2,415 Total acquired intangibles with definite lives 517,191 (324,393 ) 192,798 In-process technology 19,500 — 19,500 Total acquired intangibles $ 536,691 $ (324,393 ) $ 212,298
Amortization of acquired intangibles	Amortization of acquired intangibles for the three months ended March 30, 2019 and March 31, 2018 was as follows: Three Months Ended March 30, March 31, (In thousands) Cost of product and maintenance $ 9,854 $ 10,277 Amortization of acquired intangibles 3,308 3,630 Total amortization of acquired intangibles $ 13,162 $ 13,907
Estimated amortization expense	Estimated amortization expense for acquired intangible assets with definite lives for the following five fiscal years and thereafter is as follows: (In thousands) 2019 – remaining period $ 39,919 2020 49,422 2021 44,758 2022 26,453 2023 13,967 Thereafter 18,279 Total estimated amortization expense $ 192,798

Leases (Tables)

Leases (Tables)	3 Months Ended
	Mar. 30, 2019
Leases [Abstract]
Lease, Cost	Activity related to Cadence’s leases was as follows: Three Months Ended March 30, (In thousands) Operating lease expense $ 7,681 Cash paid for amounts included in the measurement of operating lease liabilities 6,296 ROU assets obtained in exchange for operating lease obligations 17,505
Schedule Of Supplemental Balance Sheet Information Related To Leases [Table Text Block]	ROU lease assets and lease liabilities for Cadence’s operating leases were recorded in the condensed consolidated balance sheet as follows: As of March 30, 2019 (In thousands) Other assets $ 94,223 Accounts payable and accrued liabilities $ 23,783 Other long-term liabilities 81,337 Total lease liabilities $ 105,120 Weighted average remaining lease term (in years) 5.0 Weighted average discount rate 4.6 %
Lessee, Operating Lease, Liability, Maturity	Future lease payments included in the measurement of lease liabilities on the condensed consolidated balance sheet as of March 30, 2019 , for the following five fiscal years and thereafter were as follows: Operating Leases (In thousands) 2019 – remaining period $ 20,543 2020 26,618 2021 24,240 2022 17,627 2023 12,529 Thereafter 17,152 Total future minimum lease payments 118,709 Less imputed interest (13,589 ) Total $ 105,120
Schedule of Future Minimum Rental Payments for Operating Leases [Table Text Block]	As of December 29, 2018 , future minimum lease payments, as defined under the previous lease accounting guidance of ASC Topic 840, under non-cancelable operating leases for the following five fiscal years and thereafter were as follows: Operating Leases (In thousands) 2019 $ 26,252 2020 23,130 2021 19,778 2022 14,243 2023 11,510 Thereafter 17,100 Total lease payments $ 112,013

Balance Sheet Components (Table

Balance Sheet Components (Tables)	3 Months Ended
	Mar. 30, 2019
Balance Sheet Components [Abstract]
Summary of certain balance sheet components	A summary of certain balance sheet components as of March 30, 2019 and December 29, 2018 is as follows: As of March 30, December 29, (In thousands) Other assets: Deferred income taxes $ 159,735 $ 154,894 Non-marketable investments 1 150,369 118,734 ROU lease assets 2 94,223 — Other long-term assets 92,235 97,603 Other assets $ 496,562 $ 371,231 Other long-term liabilities: Operating lease liabilities 2 $ 81,337 $ — Other long-term accrued liabilities 70,916 77,262 Other long-term liabilities $ 152,253 $ 77,262 _____________ 1 In January 2019, Cadence made an additional minority equity investment in a privately held company and existing equity method investee, for approximately $33.6 million , bringing Cadence’s total ownership to approximately 16% . 2

Stock Based Compensation (Table

Stock Based Compensation (Tables)	3 Months Ended
	Mar. 30, 2019
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Stock-based compensation expense and allocation by cost [Table Text Block]	Stock-based compensation expense is reflected in Cadence’s condensed consolidated income statements for the three months ended March 30, 2019 and March 31, 2018 as follows: Three Months Ended March 30, March 31, (In thousands) Cost of product and maintenance $ 681 $ 590 Cost of services 866 863 Marketing and sales 9,106 7,614 Research and development 26,898 23,235 General and administrative 4,702 5,599 Total stock-based compensation expense $ 42,253 $ 37,901

Stock Repurchase Program (Table

Stock Repurchase Program (Tables)	3 Months Ended
	Mar. 30, 2019
Class of Stock Disclosures [Abstract]
Shares repurchased and the total cost of shares repurchased	The shares repurchased under Cadence’s repurchase authorizations and the total cost of repurchased shares, including commissions, during the three months ended March 30, 2019 and March 31, 2018 were as follows: Three Months Ended March 30, March 31, (In thousands) Shares repurchased 1,529 1,289 Total cost of repurchased shares $ 81,114 $ 50,013

Restructuring and Other Charg_2

Restructuring and Other Charges (Tables)	3 Months Ended
	Mar. 30, 2019
Restructuring and Related Activities [Abstract]
Restructuring reserve rollforward by major type of cost	The following table presents activity relating to Cadence’s restructuring plans during the three months ended March 30, 2019 : Severance and Benefits Excess Facilities Total (In thousands) Balance, December 29, 2018 $ 11,176 $ 848 $ 12,024 Restructuring and other charges (credits) (687 ) (2 ) (689 ) Cash payments (7,986 ) (262 ) (8,248 ) Effect of foreign currency translation 34 7 41 Balance, March 30, 2019 $ 2,537 $ 591 $ 3,128
Schedule of Restructuring Reserve by Balance Sheet Classification [Table Text Block]	The remaining liability for Cadence’s restructuring plans is recorded in the condensed consolidated balance sheet as follows: As of March 30, 2019 (In thousands) Accounts payable and accrued liabilities $ 2,888 Other long-term liabilities 240 Total restructuring liabilities $ 3,128 All liabilities for severance and related benefits under Cadence’s restructuring plans are included in accounts payable and accrued liabilities on Cadence’s condensed consolidated balance sheet as of March 30, 2019

Net Income Per Share (Tables)

Net Income Per Share (Tables)	3 Months Ended
	Mar. 30, 2019
Earnings Per Share [Abstract]
Basic and diluted net income per share	The calculations for basic and diluted net income per share for the three months ended March 30, 2019 and March 31, 2018 are as follows: Three Months Ended March 30, March 31, (In thousands, except per share amounts) Net income $ 120,555 $ 72,885 Weighted average common shares used to calculate basic net income per share 273,066 273,773 Stock-based awards 7,549 7,878 Weighted average common shares used to calculate diluted net income per share 280,615 281,651 Net income per share - basic $ 0.44 $ 0.27 Net income per share - diluted $ 0.43 $ 0.26
Potential shares of Cadence's common stock excluded	The following table presents shares of Cadence’s common stock outstanding for the three months ended March 30, 2019 and March 31, 2018 that were excluded from the computation of diluted net income per share because the effect of including these shares in the computation of diluted net income per share would have been anti-dilutive: Three Months Ended March 30, March 31, (In thousands) Long-term performance-based stock awards 228 150 Options to purchase shares of common stock 242 416 Non-vested shares of restricted stock 122 279 Total potential common shares excluded 592 845

Fair Value (Tables)

Fair Value (Tables)	3 Months Ended
	Mar. 30, 2019
Fair Value Disclosures [Abstract]
Fair value of financial assets and liabilities	The fair value of financial assets and liabilities was determined using the following levels of inputs as of March 30, 2019 and December 29, 2018 : Fair Value Measurements as of March 30, 2019 Total Level 1 Level 2 Level 3 (In thousands) Assets Cash equivalents: Money market funds $ 331,994 $ 331,994 $ — $ — Marketable equity securities 3,969 3,969 — — Securities held in Non-Qualified Deferred Compensation (“NQDC”) trust 28,402 28,402 — — Total Assets $ 364,365 $ 364,365 $ — $ — Total Level 1 Level 2 Level 3 (In thousands) Liabilities Foreign currency exchange contracts $ 458 $ — $ 458 $ — Total Liabilities $ 458 $ — $ 458 $ — Fair Value Measurements as of December 29, 2018 Total Level 1 Level 2 Level 3 (In thousands) Assets Cash equivalents: Money market funds $ 327,841 $ 327,841 $ — $ — Marketable equity securities 3,887 3,887 — — Securities held in NQDC trust 27,767 27,767 — — Foreign currency exchange contracts 101 — 101 — Total Assets $ 359,596 $ 359,495 $ 101 $ — As of December 29, 2018, Cadence did not have any financial liabilities requiring a recurring fair value measurement.

Accumulated Other Comprehensi_2

Accumulated Other Comprehensive Loss (Tables)	3 Months Ended
	Mar. 30, 2019
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Accumulated other comprehensive loss, net of tax	Accumulated other comprehensive loss was comprised of the following as of March 30, 2019 and December 29, 2018 : As of March 30, December 29, (In thousands) Foreign currency translation loss $ (19,638 ) $ (20,861 ) Changes in defined benefit plan liabilities (6,437 ) (3,919 ) Total accumulated other comprehensive loss $ (26,075 ) $ (24,780 )

Segment Reporting (Tables)

Segment Reporting (Tables)	3 Months Ended
	Mar. 30, 2019
Segment Reporting [Abstract]
Summary of revenue by geography	The following table presents a summary of revenue by geography for the three months ended March 30, 2019 and March 31, 2018 : Three Months Ended March 30, March 31, (In thousands) Americas: United States $ 243,248 $ 224,803 Other Americas 8,406 7,666 Total Americas 251,654 232,469 Asia: China 58,976 45,294 Other Asia 111,348 94,653 Total Asia 170,324 139,947 Europe, Middle East and Africa 103,462 104,708 Japan 51,302 40,189 Total $ 576,742 $ 517,313
Summary of long-lived assets by geography	The following table presents a summary of long-lived assets by geography as of March 30, 2019 and December 29, 2018 : As of March 30, December 29, (In thousands) Americas: United States $ 198,168 $ 200,025 Other Americas 506 475 Total Americas 198,674 200,500 Asia: China 15,064 9,608 Other Asia 28,180 30,021 Total Asia 43,244 39,629 Europe, Middle East and Africa 10,830 11,784 Japan 644 717 Total $ 253,392 $ 252,630

Basis of Presentation and Summa

Basis of Presentation and Summary of Significant Accounting Policies New Accounting Standards (Details) - USD ($) $ in Thousands	Mar. 30, 2019		Dec. 30, 2018	Dec. 29, 2018
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Operating lease right-of-use asset	$ 94,223	[1]		$ 0
Operating lease liability	$ 105,120
Accounting Standards Update 2016-02 [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Operating lease right-of-use asset			$ 80,000
Operating lease liability			$ 80,000
[1]	Cadence adopted Topic 842, the new accounting standard for leasing arrangements on December 30, 2018, the first day of fiscal 2019. For additional information regarding Cadence’s leases, see Note 6 in the notes to condensed consolidated financial statements.

Debt (Details)

Debt (Details) - USD ($) $ in Thousands	Mar. 30, 2019	Dec. 29, 2018	Oct. 09, 2014
Debt Instrument [Line Items]
Principal	$ 400,000	$ 450,000
Unamortized Discount	(4,530)	(4,709)
Carrying Value	50,000	100,000
Carrying Value	345,470	345,291
Carrying Value	395,470	445,291
Senior Notes [Member] | Senior Notes Due 2024 [Member]
Debt Instrument [Line Items]
Principal	350,000	350,000	$ 350,000
Unamortized Discount	(4,530)	(4,709)	$ (1,400)
Carrying Value	345,470	345,291
Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Principal	50,000	100,000
Carrying Value	$ 50,000	$ 100,000

Debt Credit Facility (Details T

Debt Credit Facility (Details Textual) $ in Millions	3 Months Ended
	Mar. 30, 2019USD ($)
Revolving Credit Facility [Member]
Line of Credit Facility [Line Items]
Credit facility, current borrowing capacity	$ 350
Credit facility additional borrowing capacity available	250
Credit facility, maximum borrowing capacity	$ 600
Credit facility, maturity date	Jan. 28, 2022
Credit facility, interest rate at period end	3.83%
Minimum [Member] | Revolving Credit Facility [Member]
Line of Credit Facility [Line Items]
Credit facility, commitment fee percentage	0.15%
Maximum [Member] | Revolving Credit Facility [Member]
Line of Credit Facility [Line Items]
Credit facility, commitment fee percentage	0.30%
London Interbank Offered Rate (LIBOR) [Member] | Minimum [Member] | Revolving Credit Facility [Member]
Line of Credit Facility [Line Items]
Credit facility, interest rate spread	1.25%
London Interbank Offered Rate (LIBOR) [Member] | Maximum [Member] | Revolving Credit Facility [Member]
Line of Credit Facility [Line Items]
Credit facility, interest rate spread	1.875%
Base Rate [Member] | Minimum [Member] | Revolving Credit Facility [Member]
Line of Credit Facility [Line Items]
Credit facility, interest rate spread	0.25%
Base Rate [Member] | Maximum [Member] | Revolving Credit Facility [Member]
Line of Credit Facility [Line Items]
Credit facility, interest rate spread	0.875%
Revolving Credit Facility [Member]
Line of Credit Facility [Line Items]
Credit facility, covenant, debt to EBITDA ratio	3
Credit facility, covenant, debt to EBITDA ratio after step up triggered by acquisition	3.50
Credit facility, covenant, required business acquisition consideration, minimum	$ 250
Revolving Credit Facility [Member] | Minimum [Member]
Line of Credit Facility [Line Items]
Credit facility, covenant, pro forma leverage ratio	2.75
Revolving Credit Facility [Member] | Maximum [Member]
Line of Credit Facility [Line Items]
Credit facility, covenant, pro forma leverage ratio	3.25

Debt (Details Textual)

Debt (Details Textual) - USD ($) $ in Thousands	Oct. 09, 2014	Mar. 30, 2019	Dec. 29, 2018
Debt Instrument [Line Items]
Unamortized discount		$ 4,530	$ 4,709
Senior Notes [Member] | Senior Notes Due 2024 [Member]
Debt Instrument [Line Items]
Aggregate principal amount, issued	$ 350,000	350,000	350,000
Stated interest rate of Senior Notes	4.375%
Proceeds from Senior Notes, net	$ 342,400
Unamortized discount	1,400	$ 4,530	$ 4,709
Debt issuance costs	$ 6,200

Receivables, net (Details)

Receivables, net (Details) - USD ($) $ in Thousands	Mar. 30, 2019	Dec. 29, 2018
Current and long-term receivables balances
Accounts receivable	$ 161,922	$ 164,223
Unbilled accounts receivable	106,411	136,795
Long-term receivables	3,241	5,972
Total receivables	271,574	306,990
Less allowance for doubtful accounts	(3,566)	(3,936)
Total receivables, net	$ 268,008	$ 303,054

Receivables, net (Details Textu

Receivables, net (Details Textual) - Customer	Mar. 30, 2019	Dec. 29, 2018
Accounts Receivable and Allowances for Doubtful Accounts (Textual) [Abstract]
Number of customers with receivables balance greater than ten percent of total balance	0	1
Percentage of receivables, net attributable to single customer	10.00%	11.00%

Revenue (Details Textuals)

Revenue (Details Textuals) - USD ($) $ in Millions	3 Months Ended
	Mar. 30, 2019	Mar. 31, 2018
Revenue from Contract with Customer [Abstract]
Revenue recognized from deferred revenue during the period	$ 157.9	$ 142.6
Unsatisfied performance obligations	$ 2,800
Percent of remaining performance obligations, current	60.00%
Revenue recognized from satisfaction of performance obligations	$ 8.5	$ 6.2

Revenue (Details)

Revenue (Details)	3 Months Ended
	Mar. 30, 2019		Mar. 31, 2018
Revenue from External Customer [Line Items]
Percentage of product and maintenance revenue by product group	100.00%		100.00%
Functional Verification, including Emulation and Prototyping Hardware [Member]
Revenue from External Customer [Line Items]
Percentage of product and maintenance revenue by product group	24.00%	[1]	26.00%
Digital IC Design and Signoff [Member]
Revenue from External Customer [Line Items]
Percentage of product and maintenance revenue by product group	30.00%		30.00%
Custom IC Design and Simulation [Member]
Revenue from External Customer [Line Items]
Percentage of product and maintenance revenue by product group	25.00%		26.00%
System Interconnect and Analysis [Member]
Revenue from External Customer [Line Items]
Percentage of product and maintenance revenue by product group	9.00%		9.00%
IP [Member]
Revenue from External Customer [Line Items]
Percentage of product and maintenance revenue by product group	12.00%		9.00%
[1]	Includes immaterial amount of revenue accounted for under Topic 842.

Revenue (Details 1)

Revenue (Details 1) - USD ($) $ in Thousands	Mar. 30, 2019	Dec. 29, 2018
Revenue from Contract with Customer [Abstract]
Contract assets	$ 12,211	$ 10,055
Deferred revenue	$ 397,063	$ 401,174

Goodwill and Acquired Intangi_3

Goodwill and Acquired Intangibles (Details Textual) $ in Millions	3 Months Ended
	Mar. 30, 2019USD ($)
Existing Technology [Member]
Finite-Lived Intangible Assets [Line Items]
In-process research and development transfered to existing technology during period	$ 52

Goodwill and Acquired Intangi_4

Goodwill and Acquired Intangibles (Details) $ in Thousands	3 Months Ended
	Mar. 30, 2019USD ($)
Changes in the carrying amount of goodwill
Balance at beginning of period	$ 662,272
Effect of foreign currency translation	599
Balance at end of period	$ 662,871

Goodwill and Acquired Intangi_5

Goodwill and Acquired Intangibles (Details 1) - USD ($) $ in Thousands	Mar. 30, 2019	Dec. 29, 2018
Acquired intangibles with finite lives, excluding intangibles fully amortized at end of prior fiscal year
Gross carrying amount	$ 517,191	$ 487,644
Accumulated amortization	(324,393)	(333,687)
Acquired intangibles, net	192,798	153,957
In-process technology	19,500	71,500
Intangible Assets, Gross (Excluding Goodwill)	536,691	559,144
Intangible Assets, Net (Excluding Goodwill)	212,298	225,457
Existing Technology [Member]
Acquired intangibles with finite lives, excluding intangibles fully amortized at end of prior fiscal year
Gross carrying amount	363,143	330,500
Accumulated amortization	(215,612)	(225,383)
Acquired intangibles, net	147,531	105,117
Agreements and Relationships [Member]
Acquired intangibles with finite lives, excluding intangibles fully amortized at end of prior fiscal year
Gross carrying amount	146,448	146,426
Accumulated amortization	(103,596)	(100,211)
Acquired intangibles, net	42,852	46,215
Tradenames Trademarks And Patents [Member]
Acquired intangibles with finite lives, excluding intangibles fully amortized at end of prior fiscal year
Gross carrying amount	7,600	10,718
Accumulated amortization	(5,185)	(8,093)
Acquired intangibles, net	$ 2,415	$ 2,625

Goodwill and Acquired Intangi_6

Goodwill and Acquired Intangibles (Details 2) - USD ($) $ in Thousands	3 Months Ended
	Mar. 30, 2019	Mar. 31, 2018
Amortization of acquired intangibles
Cost of product and maintenance	$ 9,854	$ 10,277
Amortization of acquired intangibles	3,308	3,630
Total amortization of acquired intangibles	$ 13,162	$ 13,907

Goodwill and Acquired Intangi_7

Goodwill and Acquired Intangibles (Details 3) - USD ($) $ in Thousands	Mar. 30, 2019	Dec. 29, 2018
Estimated amortization expense
2019 – remaining period	$ 39,919
2020	49,422
2021	44,758
2022	26,453
2023	13,967
Thereafter	18,279
Acquired intangibles, net	$ 192,798	$ 153,957

Leases (Details Textual)

Leases (Details Textual) $ in Millions	Mar. 30, 2019USD ($)
Lessee, Lease, Description [Line Items]
Unrecorded unconditional purchase obligation	$ 1
Operating lease, weighted average remaining lease term	5 years
Minimum [Member]
Lessee, Lease, Description [Line Items]
Operating lease, weighted average remaining lease term	1 year
Lessee, Operating Lease, Lease Not yet Commenced, Renewal Term	1 year
Maximum [Member]
Lessee, Lease, Description [Line Items]
Operating lease, weighted average remaining lease term	12 years
Lessee, Operating Lease, Lease Not yet Commenced, Renewal Term	10 years

Leases (Details)

Leases (Details) $ in Thousands	3 Months Ended
	Mar. 30, 2019USD ($)
Leases [Abstract]
Operating lease expense	$ 7,681
Cash paid for amounts included in the measurement of operating lease liabilities	6,296
ROU assets obtained in exchange for operating lease obligations	$ 17,505

Leases (Details 1)

Leases (Details 1) - USD ($) $ in Thousands	Mar. 30, 2019		Dec. 29, 2018
Leases [Abstract]
ROU lease assets	$ 94,223	[1]	$ 0
Operating lease liabilities, current	23,783
Operating lease liabilities, non-current	81,337	[1]	$ 0
Total lease liabilities	$ 105,120
Operating leases, weighted average remaining lease term	5 years
Operating lease, weighted average discount rate	4.60%
[1]	Cadence adopted Topic 842, the new accounting standard for leasing arrangements on December 30, 2018, the first day of fiscal 2019. For additional information regarding Cadence’s leases, see Note 6 in the notes to condensed consolidated financial statements.

Leases (Details 2)

Leases (Details 2) $ in Thousands	Mar. 30, 2019USD ($)
Leases [Abstract]
2019 – remaining period	$ 20,543
2020	26,618
2021	24,240
2020	17,627
2022	12,529
Thereafter	17,152
Total future minimum lease payments	118,709
Less imputed interest	(13,589)
Total operating lease liability	$ 105,120

Leases (Details 3)

Leases (Details 3) $ in Thousands	Dec. 29, 2018USD ($)
Leases [Abstract]
2019	$ 26,252
2020	23,130
2021	19,778
2022	14,243
2023	11,510
Thereafter	17,100
Total lease payments	$ 112,013

Balance Sheet Components (Detai

Balance Sheet Components (Details) - USD ($) $ in Thousands	Mar. 30, 2019		Dec. 29, 2018
Other assets:
Deferred income taxes	$ 159,735		$ 154,894
Non-marketable investments	150,369	[1]	118,734
ROU lease assets	94,223	[2]	0
Other long-term assets	92,235		97,603
Other assets	496,562		371,231
Other long-term liabilities:
Operating lease liabilities	81,337	[2]	0
Other long-term accrued liabilities	70,916		77,262
Other long-term liabilities	$ 152,253		$ 77,262
[1]	In January 2019, Cadence made an additional minority equity investment in a privately held company and existing equity method investee, for approximately $33.6 million , bringing Cadence’s total ownership to approximately 16%
[2]	Cadence adopted Topic 842, the new accounting standard for leasing arrangements on December 30, 2018, the first day of fiscal 2019. For additional information regarding Cadence’s leases, see Note 6 in the notes to condensed consolidated financial statements.

Balance Sheet Components (Det_2

Balance Sheet Components (Details Textual) $ in Millions	3 Months Ended
	Mar. 30, 2019USD ($)
Balance Sheet Components [Abstract]
Payments to acquire equity method investments	$ 33.6
Equity method investment, ownership percentage	16.00%

Stock Based Compensation (Detai

Stock Based Compensation (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 30, 2019	Mar. 31, 2018
Share-based compensation expense and allocation by cost [Line Items]
Share-based Compensation	$ 42,253	$ 37,901
Cost of product and maintenance
Share-based compensation expense and allocation by cost [Line Items]
Share-based Compensation	681	590
Cost of services
Share-based compensation expense and allocation by cost [Line Items]
Share-based Compensation	866	863
Marketing and sales
Share-based compensation expense and allocation by cost [Line Items]
Share-based Compensation	9,106	7,614
Research and development
Share-based compensation expense and allocation by cost [Line Items]
Share-based Compensation	26,898	23,235
General and administrative
Share-based compensation expense and allocation by cost [Line Items]
Share-based Compensation	$ 4,702	$ 5,599

Stock Based Compensation (Det_2

Stock Based Compensation (Details Textual) - Stock option and restricted stock grants [Member] $ in Millions	3 Months Ended
	Mar. 30, 2019USD ($)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total unrecognized compensation expense	$ 289.9
Weighted-average vesting period over which unrecognized compensation expense will be recognized	2 years 3 months 18 days

Stock Repurchase Program (Detai

Stock Repurchase Program (Details) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 30, 2019	Mar. 31, 2018	Dec. 29, 2018
Class of Stock Disclosures [Abstract]
Additional authorized repurchase amount	$ 500,000
Remaining authorized repurchase amount	$ 594,000		$ 175,000
Shares repurchased	1,529	1,289
Total cost of repurchased shares	$ 81,114	$ 50,013

Restructuring and Other Charg_3

Restructuring and Other Charges (Details Textual) - USD ($) $ in Thousands	3 Months Ended
	Mar. 30, 2019	Mar. 31, 2018
Restructuring and Related Activities [Abstract]
Restructuring and other charges (credits)	$ (689)	$ (1,991)

Restructuring and Other Charg_4

Restructuring and Other Charges (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 30, 2019	Mar. 31, 2018
Restructuring Cost and Reserve [Line Items]
Beginning balance	$ 12,024
Restructuring and other charges (credits)	(689)	$ (1,991)
Cash payments	(8,248)
Effect of foreign currency translation	41
Ending balance	3,128
Employee Severance and Benefits [Member]
Restructuring Cost and Reserve [Line Items]
Beginning balance	11,176
Restructuring and other charges (credits)	(687)
Cash payments	(7,986)
Effect of foreign currency translation	34
Ending balance	2,537
Excess Facilities [Member]
Restructuring Cost and Reserve [Line Items]
Beginning balance	848
Restructuring and other charges (credits)	(2)
Cash payments	(262)
Effect of foreign currency translation	7
Ending balance	$ 591

Restructuring and Other Charg_5

Restructuring and Other Charges (Details 1) - USD ($) $ in Thousands	Mar. 30, 2019	Dec. 29, 2018
Restructuring Cost and Reserve [Line Items]
Restructuring reserve	$ 3,128	$ 12,024
Accounts Payable and Accrued Liabilities [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring reserve	2,888
Other Long Term Liabilities [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring reserve	$ 240

Net Income Per Share (Details)

Net Income Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 30, 2019	Mar. 31, 2018
Earnings Per Share, Basic and Diluted [Abstract]
Net Income	$ 120,555	$ 72,885
Weighted average common shares used to calculate basic net income per share	273,066	273,773
Stock-based awards	7,549	7,878
Weighted average common shares used to calculate diluted net income per share	280,615	281,651
Net income per share - basic	$ 0.44	$ 0.27
Net income per share - diluted	$ 0.43	$ 0.26

Net Income Per Share (Details 1

Net Income Per Share (Details 1) - shares shares in Thousands	3 Months Ended
	Mar. 30, 2019	Mar. 31, 2018
Potential shares of Cadence's common stock excluded
Total potential common shares excluded	592	845
Long-term performance-based stock awards
Potential shares of Cadence's common stock excluded
Total potential common shares excluded	228	150
Options to purchase shares of common stock
Potential shares of Cadence's common stock excluded
Total potential common shares excluded	242	416
Non-vested shares of restricted stock
Potential shares of Cadence's common stock excluded
Total potential common shares excluded	122	279

Fair Value (Details)

Fair Value (Details) - USD ($) $ in Thousands	Mar. 30, 2019	Dec. 29, 2018
Short-term investments:
Marketable equity securities	$ 3,969	$ 3,887
Securities held in Non-Qualified Deferred Compensation trust, or NQDC	28,402	27,767
Foreign currency exchange contracts		101
Total Assets	364,365	359,596
Liabilities [Abstract]
Foreign currency exchange contracts	458
Total Liabilities	458
Money market funds [Member]
Assets
Cash equivalents	331,994	327,841
Fair Value Measurements, Level 1 [Member]
Short-term investments:
Marketable equity securities	3,969	3,887
Securities held in Non-Qualified Deferred Compensation trust, or NQDC	28,402	27,767
Foreign currency exchange contracts		0
Total Assets	364,365	359,495
Liabilities [Abstract]
Foreign currency exchange contracts	0
Total Liabilities	0
Fair Value Measurements, Level 1 [Member] | Money market funds [Member]
Assets
Cash equivalents	331,994	327,841
Fair Value Measurements, Level 2 [Member]
Short-term investments:
Marketable equity securities	0	0
Securities held in Non-Qualified Deferred Compensation trust, or NQDC	0	0
Foreign currency exchange contracts		101
Total Assets	0	101
Liabilities [Abstract]
Foreign currency exchange contracts	458
Total Liabilities	458
Fair Value Measurements, Level 2 [Member] | Money market funds [Member]
Assets
Cash equivalents	0	0
Fair Value Measurements, Level 3 [Member]
Short-term investments:
Marketable equity securities	0	0
Securities held in Non-Qualified Deferred Compensation trust, or NQDC	0	0
Foreign currency exchange contracts		0
Total Assets	0	0
Liabilities [Abstract]
Foreign currency exchange contracts	0
Total Liabilities	0
Fair Value Measurements, Level 3 [Member] | Money market funds [Member]
Assets
Cash equivalents	$ 0	$ 0

Accumulated Other Comprehensi_3

Accumulated Other Comprehensive Loss (Details) - USD ($) $ in Thousands	Mar. 30, 2019	Dec. 29, 2018
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Foreign currency translation loss	$ (19,638)	$ (20,861)
Changes in defined benefit plan liabilities	(6,437)	(3,919)
Total accumulated other comprehensive loss	$ (26,075)	$ (24,780)

Segment Reporting (Details)

Segment Reporting (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 30, 2019	Mar. 31, 2018
Entity Wide Disclosure on Geographic Areas Revenue from External Customers
Total revenue	$ 576,742	$ 517,313
United States [Member]
Entity Wide Disclosure on Geographic Areas Revenue from External Customers
Geographic areas, revenue from external customers	243,248	224,803
Other Americas [Member]
Entity Wide Disclosure on Geographic Areas Revenue from External Customers
Geographic areas, revenue from external customers	8,406	7,666
Americas [Member]
Entity Wide Disclosure on Geographic Areas Revenue from External Customers
Geographic areas, revenue from external customers	251,654	232,469
China [Member]
Entity Wide Disclosure on Geographic Areas Revenue from External Customers
Geographic areas, revenue from external customers	58,976	45,294
Other Asia [Member]
Entity Wide Disclosure on Geographic Areas Revenue from External Customers
Geographic areas, revenue from external customers	111,348	94,653
Asia [Member]
Entity Wide Disclosure on Geographic Areas Revenue from External Customers
Geographic areas, revenue from external customers	170,324	139,947
EMEA [Member]
Entity Wide Disclosure on Geographic Areas Revenue from External Customers
Geographic areas, revenue from external customers	103,462	104,708
Japan [Member]
Entity Wide Disclosure on Geographic Areas Revenue from External Customers
Geographic areas, revenue from external customers	$ 51,302	$ 40,189

Segment Reporting (Details 1)

Segment Reporting (Details 1) - USD ($) $ in Thousands	Mar. 30, 2019	Dec. 29, 2018
Summary of long-lived assets by geography
Total long-lived assets	$ 253,392	$ 252,630
United States [Member]
Summary of long-lived assets by geography
Long-lived assets in individual foreign countries	198,168	200,025
Other Americas [Member]
Summary of long-lived assets by geography
Long-lived assets in individual foreign countries	506	475
Americas [Member]
Summary of long-lived assets by geography
Long-lived assets in individual foreign countries	198,674	200,500
China [Member]
Summary of long-lived assets by geography
Long-lived assets in individual foreign countries	15,064	9,608
Other Asia [Member]
Summary of long-lived assets by geography
Long-lived assets in individual foreign countries	28,180	30,021
Asia [Member]
Summary of long-lived assets by geography
Long-lived assets in individual foreign countries	43,244	39,629
EMEA [Member]
Summary of long-lived assets by geography
Long-lived assets in individual foreign countries	10,830	11,784
Japan [Member]
Summary of long-lived assets by geography
Long-lived assets in individual foreign countries	$ 644	$ 717