Sleep Number (SNBR) 10-Q 1 May 20 2020 Q1 Quarterly report Financial data

Cover Page

Cover Page shares in Thousands	3 Months Ended
	Mar. 28, 2020shares
Cover [Abstract]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Mar. 28, 2020
Document Transition Report	false
Entity File Number	000-25121
Entity Registrant Name	SLEEP NUMBER CORPORATION
Entity Incorporation, State or Country Code	MN
Entity Tax Identification Number	41-1597886
Entity Address, Address Line One	1001 Third Avenue South
Entity Address, City or Town	Minneapolis
Entity Address, State or Province	MN
Entity Address, Postal Zip Code	55404
City Area Code	763
Local Phone Number	551-7000
Title of 12(b) Security	Common Stock, par value $0.01 per share
Trading Symbol	SNBR
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
Amendment Flag	false
Document Fiscal Period Focus	Q1
Document Fiscal Year Focus	2020
Current Fiscal Year End Date	--01-02
Entity Central Index Key	0000827187
Entity Common Stock, Shares Outstanding	27,636

Condensed Consolidated Balance

Condensed Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Mar. 28, 2020	Dec. 28, 2019
Current assets:
Cash and cash equivalents	$ 239,213	$ 1,593
Accounts receivable, net of allowance for doubtful accounts of $1,067 and $898, respectively	7,170	19,978
Inventories	82,021	87,065
Prepaid expenses	13,492	15,335
Other current assets	30,889	36,397
Total current assets	372,785	160,368
Non-current assets:
Property and equipment, net	194,707	197,421
Operating lease right-of-use assets	323,770	327,017
Goodwill and intangible assets, net	72,681	73,226
Other non-current assets	49,871	48,011
Total assets	1,013,814	806,043
Current liabilities:
Borrowings under revolving credit facility	446,003	231,000
Accounts payable	132,939	134,594
Customer prepayments	25,816	34,248
Accrued sales returns	22,273	19,809
Compensation and benefits	27,292	40,321
Taxes and withholding	27,490	22,171
Operating lease liabilities	60,210	59,561
Other current liabilities	53,054	53,070
Total current liabilities	795,077	594,774
Non-current liabilities:
Deferred income taxes	9,142	3,808
Operating lease liabilities	294,548	298,090
Other non-current liabilities	70,956	68,802
Total liabilities	1,169,723	965,474
Shareholders’ deficit:
Undesignated preferred stock; 5,000 shares authorized, no shares issued and outstanding	0	0
Common stock, $0.01 par value; 142,500 shares authorized, 27,636 and 27,961 shares issued and outstanding, respectively	276	280
Additional paid-in capital	0	0
Accumulated deficit	(156,185)	(159,711)
Total shareholders’ deficit	(155,909)	(159,431)
Total liabilities and shareholders’ deficit	$ 1,013,814	$ 806,043

Condensed Consolidated Balanc_2

Condensed Consolidated Balance Sheets (Parenthetical) (Unaudited) - USD ($) $ in Thousands	Mar. 28, 2020	Dec. 28, 2019
Current assets:
Allowance for doubtful accounts	$ 1,067	$ 898
Shareholders’ deficit:
Undesignated preferred stock, shares authorized (in shares)	5,000,000	5,000,000
Undesignated preferred stock, shares issued (in shares)	0	0
Undesignated preferred stock, shares outstanding (in shares)	0	0
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	142,500,000	142,500,000
Common stock, shares issued (in shares)	27,636,000	27,961,000
Common stock, shares outstanding (in shares)	27,636,000	27,961,000

Condensed Consolidated Statemen

Condensed Consolidated Statements of Operations (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 28, 2020	Mar. 30, 2019
Income Statement [Abstract]
Net sales	$ 472,566	$ 426,445
Cost of sales	170,435	164,212
Gross profit	302,131	262,233
Operating expenses:
Sales and marketing	207,744	186,827
General and administrative	31,072	34,323
Research and development	10,501	8,376
Total operating expenses	249,317	229,526
Operating income	52,814	32,707
Interest expense, net	2,344	2,609
Income before income taxes	50,470	30,098
Income tax expense	11,330	4,680
Net income	$ 39,140	$ 25,418
Basic net income per share:
Net income per share – basic (in dollars per share)	$ 1.40	$ 0.83
Weighted-average shares – basic	27,858,000	30,620,000
Diluted net income per share:
Net income per share – diluted (in dollars per share)	$ 1.36	$ 0.80
Weighted-average shares – diluted	28,772,000	31,738,000

Condensed Consolidated Statem_2

Condensed Consolidated Statements of Shareholders' (Deficit) (unaudited) - USD ($) $ in Thousands	Total	Common Stock	Additional Paid-in Capital	Accumulated Deficit
Beginning balance (in shares) at Dec. 29, 2018		30,868,000
Beginning balance at Dec. 29, 2018	$ (109,550)	$ 309	$ 0	$ (109,859)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	25,418			25,418
Exercise of common stock options (in shares)		151,000
Exercise of common stock options	2,836	$ 2	2,834
Stock-based compensation (in shares)		364,000
Stock-based compensation	3,638	$ 3	3,635
Repurchases of common stock (in shares)		(1,170,000)
Repurchases of common stock	(46,982)	$ (12)	(6,469)	(40,501)
Ending balance (in shares) at Mar. 30, 2019		30,213,000
Ending balance at Mar. 30, 2019	$ (124,640)	$ 302	0	(124,942)
Beginning balance (in shares) at Dec. 28, 2019	27,961,000	27,961,000
Beginning balance at Dec. 28, 2019	$ (159,431)	$ 280	0	(159,711)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	39,140			39,140
Exercise of common stock options (in shares)		167,000
Exercise of common stock options	3,283	$ 1	3,282
Stock-based compensation (in shares)		396,000
Stock-based compensation	2,051	$ 4	2,047
Repurchases of common stock (in shares)		(888,000)
Repurchases of common stock	$ (40,952)	$ (9)	(5,329)	(35,614)
Ending balance (in shares) at Mar. 28, 2020	27,636,000	27,636,000
Ending balance at Mar. 28, 2020	$ (155,909)	$ 276	$ 0	$ (156,185)

Condensed Consolidated Statem_3

Condensed Consolidated Statement of Cash Flows (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 28, 2020	Mar. 30, 2019
Cash flows from operating activities:
Net income	$ 39,140	$ 25,418
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	15,371	15,743
Stock-based compensation	2,051	3,638
Net gain on disposals and impairments of assets	(22)	(433)
Deferred income taxes	5,334	824
Changes in operating assets and liabilities:
Accounts receivable	12,808	6,182
Inventories	5,044	1,568
Income taxes	5,798	4,208
Prepaid expenses and other assets	7,478	(5,283)
Accounts payable	11,282	5,857
Customer prepayments	(8,432)	3,452
Accrued compensation and benefits	(13,157)	1,750
Other taxes and withholding	(479)	1,254
Other accruals and liabilities	2,725	3,958
Net cash provided by operating activities	84,941	68,136
Cash flows from investing activities:
Purchases of property and equipment	(10,351)	(19,743)
Proceeds from sales of property and equipment	25	2,571
Net cash used in investing activities	(10,326)	(17,172)
Cash flows from financing activities:
Repurchases of common stock	(41,445)	(55,656)
Net increase in short-term borrowings	201,170	2,955
Proceeds from issuance of common stock	3,283	2,836
Debt issuance costs	(3)	(1,015)
Net cash provided by (used in) financing activities	163,005	(50,880)
Net increase in cash and cash equivalents	237,620	84
Cash and cash equivalents, at beginning of period	1,593	1,612
Cash and cash equivalents, at end of period	$ 239,213	$ 1,696

Business and Summary of Signifi

Business and Summary of Significant Accounting Policies	3 Months Ended
	Mar. 28, 2020
Accounting Policies [Abstract]
Business and Summary of Significant Accounting Policies	Business and Summary of Significant Accounting Policies Business & Basis of Presentation We prepared the condensed consolidated financial statements as of and for the three months ended March 28, 2020 of Sleep Number Corporation and our 100%-owned subsidiaries (Sleep Number or the Company), without audit, pursuant to the rules and regulations of the Securities and Exchange Commission (SEC) and they reflect, in the opinion of management, all normal recurring adjustments necessary to present fairly our financial position as of March 28, 2020 and December 28, 2019, and the consolidated results of operations and cash flows for the periods presented. Our historical and quarterly consolidated results of operations may not be indicative of the results that may be achieved for the full year or any future period. Additionally, based on the duration and severity of the current global situation involving the novel coronavirus (COVID-19) pandemic, including but not limited to general economic conditions, consumer confidence, store closings mandated by federal, state or local authorities and possible supply chain disruptions, the extent to which COVID-19 will impact our business and our consolidated financial results will depend on future developments, which are highly uncertain and cannot be predicted. Certain information and footnote disclosures normally included in financial statements prepared in accordance with U.S. generally accepted accounting principles (GAAP) have been condensed or omitted pursuant to such rules and regulations. These condensed consolidated financial statements should be read in conjunction with our most recent audited consolidated financial statements and related notes included in our Annual Report on Form 10-K for the fiscal year ended December 28, 2019 and other recent filings with the SEC. The preparation of condensed consolidated financial statements in conformity with U.S. GAAP requires us to make estimates and assumptions. These estimates and assumptions affect the reported amounts of assets and liabilities, disclosure of contingent assets and liabilities at the date of the condensed consolidated financial statements, and the reported amounts of sales, expenses and income taxes during the reporting period. Predicting future events is inherently an imprecise activity and, as such, requires the use of judgment. As future events and their effects cannot be determined with precision, actual results could differ significantly from these estimates. In addition, during the current environment involving COVID-19, predicting future events will be especially challenging for management. Changes in these estimates will be reflected in the consolidated financial statements in future periods and could be material. Our critical accounting policies consist of stock-based compensation, goodwill and indefinite-lived intangible assets, warranty liabilities and revenue recognition. The condensed consolidated financial statements include the accounts of Sleep Number Corporation and our 100%-owned subsidiaries. All significant intra-entity balances and transactions have been eliminated in consolidation. New Accounting Pronouncements Accounting Guidance Not Yet Adopted In April 2020, the Financial Accounting Standards Board (FASB) issued a Staff Q&A, Topic 842 and 840: Accounting For Lease Concessions Related to the Effects of the COVID-19 Pandemic . To provide clarity in response to the COVID-19 pandemic crisis, the FASB staff believes that it would be acceptable for entities to make an election to account for lease concessions related to the effects of the COVID-19 pandemic consistent with how those concessions would be accounted for under Topic 842 as though enforceable rights and obligations for those concessions existed (regardless of whether those enforceable rights and obligations for the concessions explicitly exist in the contract). Consequently, for concessions related to the effects of the COVID-19 pandemic, we will not have to analyze each contract to determine whether enforceable rights and obligations for concessions exist in the contract and can elect to apply or not apply the lease modification guidance in Topic 842 to those contracts. This election is available for concessions related to the effects of the COVID-19 pandemic that do not result in a substantial increase in the rights of the lessor or our obligations as the lessee. For example, this election is available for concessions that result in the total payments required by the modified contract being substantially the same as or less than total payments required by the original contract. The FASB staff expects that reasonable judgment will be exercised in making those determinations. Some concessions will provide a deferral of payments with no substantive changes to the consideration in the original contract. A deferral affects the timing, but the amount of the consideration is substantially the same as that required by the original contract. The staff expects that there will be multiple ways to account for those deferrals, none of which the staff believes are more preferable than the others. Two of those methods are: a. Account for the concessions as if no changes to the lease contract were made. Under that accounting, a lessor would increase its lease receivable, and a lessee would increase its accounts payable as receivables/payments accrue. In its income statement, a lessor would continue to recognize income, and a lessee would continue to recognize expense during the deferral period. b. Account for the deferred payments as variable lease payments.

Fair Value Measurements

Fair Value Measurements	3 Months Ended
	Mar. 28, 2020
Fair Value Disclosures [Abstract]
Fair Value Measurements	Fair Value MeasurementsAt March 28, 2020 and December 28, 2019, we had $9 million and $8 million, respectively, of debt and equity securities that fund our deferred compensation plan and are classified in other non-current assets. We also had corresponding deferred compensation plan liabilities of $9 million and $8 million at March 28, 2020 and December 28, 2019, respectively, which are included in other non-current liabilities. The majority of the debt and equity securities are Level 1 as they trade with sufficient frequency and volume to enable us to obtain pricing information on an ongoing basis. Unrealized gains/(losses) on the debt and equity securities offset those associated with the corresponding deferred compensation plan liabilities.

Inventories

Inventories	3 Months Ended
	Mar. 28, 2020
Inventory Disclosure [Abstract]
Inventories	Inventories Inventories consisted of the following (in thousands): March 28, December 28, Raw materials $ 4,905 $ 6,231 Work in progress 81 31 Finished goods 77,035 80,803 $ 82,021 $ 87,065

Goodwill and Intangible Assets,

Goodwill and Intangible Assets, Net	3 Months Ended
	Mar. 28, 2020
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill and Intangible Assets, Net	Goodwill and Intangible Assets, Net Goodwill and Indefinite-Lived Intangible Assets Goodwill was $64 million at March 28, 2020 and December 28, 2019. Indefinite-lived trade name/trademarks totaled $1.4 million at March 28, 2020 and December 28, 2019. Definite-Lived Intangible Assets The gross carrying amount of our developed technologies was $19 million at March 28, 2020 and December 28, 2019. Accumulated amortization was $12 million and $11 million at March 28, 2020 and December 28, 2019, respectively. Amortization expense for both the three months ended March 28, 2020 and March 30, 2019, was $0.5 million. Annual amortization for definite-lived intangible assets for subsequent years are as follows (in thousands): March 28, 2020 (excluding the three months ended March 28, 2020) $ 1,668 2021 2,181 2022 2,181 2023 1,209 Thereafter — Total future amortization for definite-lived intangible assets $ 7,239

Credit Agreement

Credit Agreement	3 Months Ended
	Mar. 28, 2020
Debt Disclosure [Abstract]
Credit Agreement	Credit Agreement Our revolving credit facility as of March 28, 2020, had a net aggregate availability of $450 million. The credit facility is for general corporate purposes and to meet our seasonal working capital requirements. The credit agreement provides the lenders with a collateral security interest in substantially all of our assets and those of our subsidiaries and requires us to comply with, among other things, a maximum leverage ratio (4.5x) and a minimum interest coverage ratio (3.0x). Under the terms of the credit agreement, we pay a variable rate of interest and a commitment fee based on our leverage ratio. The credit agreement matures in February 2024. We were in compliance with all financial covenants as of March 28, 2020. On March 17, 2020, we borrowed an additional $262 million under our credit agreement, which represented all remaining amounts then available under the credit agreement. The additional borrowings were undertaken as a precautionary measure to provide increased liquidity and preserve financial flexibility in light of current disruption and uncertainty resulting from the COVID-19 pandemic. The following table summarizes our borrowings under the credit facility ($ in thousands): March 28, December 28, Outstanding borrowings $ 446,003 $ 231,000 Outstanding letters of credit $ 3,997 $ 3,497 Additional borrowing capacity $ — $ 215,503 Weighted-average interest rate 2.9 % 3.5 % On April 3, 2020, we amended the credit agreement to add a 364-day term loan facility up to an aggregate commitment of $75 million under our credit agreement for a total commitment amount of $525 million, with another $75 million available under our accordion (subject to lenders' approval). We fully drew down the term loan and secured an initial interest rate of approximately 3.27%, which is equal to the one-month LIBOR rate plus the applicable margin based on the then-current total leverage ratio. In addition, the amendment: (a) increases the floor for loans based on LIBOR to at least 0.75% and (b) prohibits the use of proceeds of the revolving loan, term loan or letters of credit under the credit agreement, as amended, to make capital distributions (as defined in the credit agreement, as amended, to include, among other items, dividends and share repurchases). No financial covenants were amended. The additional borrowings were undertaken as a precautionary measure to provide increased liquidity and preserve financial flexibility in light of current disruption and uncertainty resulting from the COVID-19 pandemic. Proceeds may be used in the future for working capital and other general corporate purposes permitted by the credit agreement, as amended.

Leases

Leases	3 Months Ended
	Mar. 28, 2020
Leases [Abstract]
Leases	Leases We lease our retail, office and manufacturing space under operating leases which, in addition to the minimum lease payments, may require payment of a proportionate share of the real estate taxes and certain building operating expenses. While our local market development approach generally results in long-term participation in given markets, our retail store leases generally provide for an initial lease term of five three Our operating lease costs include facility, vehicle and equipment lease costs, but exclude variable lease costs. Operating lease costs are recognized on a straight-line basis over the lease term, after consideration of rent escalations and rent holidays. The lease term for purposes of the calculation begins on the earlier of the lease commencement date or the date we take possession of the property. During lease renewal negotiations that extend beyond the original lease term, we estimate straight-line rent expense based on current market conditions. Variable lease costs are recorded when it is probable the cost has been incurred and the amount can be reasonably estimated. Future payments for real estate taxes and certain building operating expenses for which we are obligated are not included in operating lease costs. At March 28, 2020, our finance right-of-use assets and lease liabilities were not significant. Operating lease costs were as follows (in thousands): Three Months Ended March 28, March 30, Operating lease costs (1) $ 22,949 $ 21,056 Variable lease costs $ 12 $ 499 ___________________________ (1) Includes short-term lease costs which are not significant. The maturities of operating lease liabilities as of March 28, 2020, were as follows (in thousands): 2020 (excluding the three months ended March 28, 2020) (1) 63,309 2021 78,083 2022 69,672 2023 59,702 2024 47,918 2025 39,059 Thereafter 88,488 Total lease payments (2) 446,231 Less: Interest 91,473 Present value of operating lease liabilities (3) $ 354,758 ___________________________ (1) Subsequent to March 28, 2020, we renegotiated certain operating leases to defer approximately $3 million in lease payments from 2020 to future periods in response to store closings mandated by federal, state or local authorities and other economic issues related to COVID-19. (2) Total lease payments exclude $62 million of legally binding minimum lease payments for leases signed but not yet commenced. (3) Includes the current portion of $60 million for operating lease liabilities. Other information related to operating leases was as follows: March 28, December 28, Weighted-average remaining lease term (years) 6.5 6.6 Weighted-average discount rate 7.1 % 7.2 % Three Months Ended (in thousands) March 28, March 30, Cash paid for amounts included in present value of operating lease liabilities $ 21,469 $ 19,757 Right-of-use assets obtained in exchange for operating lease liabilities $ 10,954 $ 16,153

Repurchases of Common Stock

Repurchases of Common Stock	3 Months Ended
	Mar. 28, 2020
Repurchases Of Common Stock [Abstract]
Repurchases of Common Stock	Repurchases of Common Stock Repurchases of our common stock were as follows (in thousands): Three Months Ended March 28, March 30, Amount repurchased under Board-approved share repurchase program $ 38,111 $ 40,900 Amount repurchased in connection with the vesting of employee restricted stock grants 2,841 6,082 Total amount repurchased (based on trade dates) $ 40,952 $ 46,982 As of March 28, 2020, the remaining authorization under our Board-approved share repurchase program was $437 million. In light of the uncertainty surrounding the impact of COVID-19, we have suspended all share repurchases under our Board-approved share repurchase program.

Revenue Recognition

Revenue Recognition	3 Months Ended
	Mar. 28, 2020
Revenue Recognition [Abstract]
Revenue Recognition	Revenue Recognition Deferred contract assets and deferred contract liabilities are included in our condensed consolidated balance sheets as follows (in thousands): March 28, December 28, Deferred Contract Assets included in: Other current assets $ 24,408 $ 23,568 Other non-current assets 35,078 33,782 $ 59,486 $ 57,350 March 28, December 28, Deferred Contract Liabilities included in: Other current liabilities $ 34,515 $ 34,204 Other non-current liabilities 46,512 44,970 $ 81,027 $ 79,174 During the three months ended March 28, 2020 and March 30, 2019, we recognized revenue of $10 million and $9 million, respectively, that were included in the deferred contract liability balances at the beginning of the respective periods. Revenue from goods and services transferred to customers at a point in time accounted for approximately 98% of our revenues for both the three months ended March 28, 2020 and March 30, 2019. Net sales from each of our channels was as follows (in thousands): Three Months Ended March 28, March 30, Retail $ 435,357 $ 392,226 Online and phone 35,917 29,763 Company-Controlled channel 471,274 421,989 Wholesale/Other channel 1,292 4,456 Total $ 472,566 $ 426,445 Obligation for Sales Returns The activity in the sales returns liability account was as follows (in thousands): Three Months Ended March 28, March 30, Balance at beginning of year $ 19,809 $ 19,907 Additions that reduce net sales 22,258 21,726 Deductions from reserves (19,794) (21,676) Balance at end of period $ 22,273 $ 19,957

Stock-Based Compensation Expens

Stock-Based Compensation Expense	3 Months Ended
	Mar. 28, 2020
Share-based Payment Arrangement [Abstract]
Stock-Based Compensation Expense	Stock-Based Compensation Expense Total stock-based compensation expense was as follows (in thousands): Three Months Ended March 28, March 30, Stock awards $ 1,405 $ 3,033 Stock options 646 605 Total stock-based compensation expense (1) 2,051 3,638 Income tax benefit 496 898 Total stock-based compensation expense, net of tax $ 1,555 $ 2,740 (1) Decrease in 2020 stock-based compensation expense reflects the cumulative impact of the change in the expected achievements of certain performance targets.

Profit Sharing and 401(k) Plan

Profit Sharing and 401(k) Plan	3 Months Ended
	Mar. 28, 2020
Profit Sharing And401 K Plan [Abstract]
Profit Sharing and 401(k) Plan	Profit Sharing and 401(k) Plan Under our profit sharing and 401(k) plan, eligible employees may defer up to 50% of their compensation on a pre-tax basis, subject to Internal Revenue Service limitations. Each pay period, we may make a discretionary contribution equal to a percentage of the employee’s contribution. During the three months ended March 28, 2020 and March 30, 2019, our contributions, net of forfeitures, were $1.6 million and $1.5 million, respectively. Effective May 2020, we suspended making discretionary 401(k) plan contributions for the remainder of fiscal year 2020.

Net Income Per Common Share

Net Income Per Common Share	3 Months Ended
	Mar. 28, 2020
Earnings Per Share [Abstract]
Net Income per Common Share	Net Income per Common Share The components of basic and diluted net income per share were as follows (in thousands, except per share amounts): Three Months Ended March 28, March 30, Net income $ 39,140 $ 25,418 Reconciliation of weighted-average shares outstanding: Basic weighted-average shares outstanding 27,858 30,620 Dilutive effect of stock-based awards 914 1,118 Diluted weighted-average shares outstanding 28,772 31,738 Net income per share – basic $ 1.40 $ 0.83 Net income per share – diluted $ 1.36 $ 0.80 For the three months ended March 28, 2020 and March 30, 2019, anti-dilutive stock-based awards excluded from the diluted net income per share calculations were immaterial.

Commitments and Contingencies

Commitments and Contingencies	3 Months Ended
	Mar. 28, 2020
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Commitments and Contingencies Warranty Liabilities The activity in the accrued warranty liabilities account was as follows (in thousands): Three Months Ended March 28, 2020 March 30, 2019 Balance at beginning of year $ 11,345 $ 10,389 Additions charged to costs and expenses for current-year sales 2,628 3,192 Deductions from reserves (2,779) (3,127) Changes in liability for pre-existing warranties during the current year, including expirations 297 1,166 Balance at end of period $ 11,491 $ 11,620 Legal Proceedings We are involved from time to time in various legal proceedings arising in the ordinary course of our business, including primarily commercial, product liability, employment and intellectual property claims. In accordance with U.S. generally accepted accounting principles, we record a liability in our consolidated financial statements with respect to any of these matters when it is both probable that a liability has been incurred and the amount of the liability can be reasonably estimated. If a material loss is reasonably possible but not known or probable, and may be reasonably estimated, the estimated loss or range of loss is disclosed. With respect to currently pending legal proceedings, we have not established an estimated range of reasonably possible material losses either because we believe that we have valid defenses to claims asserted against us, the proceeding has not advanced to a stage of discovery that would enable us to establish an estimate, or the potential loss is not material. We currently do not expect the outcome of pending legal proceedings to have a material effect on our consolidated results of operations, financial position or cash flows. Litigation, however, is inherently unpredictable, and it is possible that the ultimate outcome of one or more claims asserted against us could adversely impact our consolidated results of operations, financial position or cash flows. We expense legal costs as incurred. On September 18, 2018, two former Home Delivery team members filed suit, now venued in Superior Court in Fresno County, California, alleging representative claims on a purported class action basis under the California Labor Code Private Attorney General Act. While the two representative plaintiffs were in the Home Delivery workforce, the Complaint does not limit the purported plaintiff class to that group. The plaintiffs allege that Sleep Number failed or refused to adopt adequate practices, policies and procedures relating to wage payments, record keeping, employment disclosures, meal and rest breaks, among other claims, under California law. The Complaint sought damages in the form of civil penalties and plaintiffs’ attorneys’ fees. The parties have executed a settlement agreement pending Court approval, which includes the settlement and release of certain additional related claims that are contained in a consolidated complaint currently pending in San Diego County Superior Court. We intend to continue vigorously defending this matter in the event the Court does not approve the settlement. On March 27, 2018, Level Sleep, LLC (Level Sleep) filed a patent infringement lawsuit against Sleep Number in the Federal District Court for the Eastern District of Texas. In its Complaint, Level Sleep claims that Sleep Number infringed two patents owned by Level Sleep, U.S. Patent Nos. 6,807,698 and 7,036,172 (the Patents), by, among other things, making, using, offering for sale, or selling within the United States, and/or importing into the United States, beds with sleep surfaces having foam with multiple zones in the longitudinal direction. Level Sleep has asserted that five non-360 ® beds no longer sold and two current non-360 beds infringe the Patents. Level Sleep seeks damages in the form of a reasonable royalty. Sleep Number has asserted that the Patents are invalid and that our products do not infringe the Patents. On January 14, 2020, the Court granted summary judgment in favor of Sleep Number, finding that Sleep Number’s products do not infringe the Patents. Level Sleep has filed a notice of appeal of the Court’s summary judgment order. We intend to continue vigorously defending this matter.

COVID-19 Pandemic

COVID-19 Pandemic	3 Months Ended
	Mar. 28, 2020
Coronavirus Disease [Abstract]
Coronavirus Disease	COVID-19 Pandemic The COVID-19 pandemic and ensuing government restrictions have resulted in the temporary closure of most of our retail stores since mid-March. The pandemic has impacted our revenue growth and will adversely impact our financial performance. The length and severity of the reduction in consumer demand due to the pandemic and the impact on our future financial performance remains uncertain. I n response to the pandemic, we have taken decisive actions to focus on the health and safety of our team members and customers, strengthening our liquidity, cash flows and financial position, and mitigating the future impact on our operations and financial performance. See Item 2. Management's Discussion and Analysis of Financial Conditions and Results of Operations and Part II: Item 1A. Risk Factors for additional discussion on the COVID-19 pandemic and the impact on our business.

Business and Summary of Signi_2

Business and Summary of Significant Accounting Policies (Policies)	3 Months Ended
	Mar. 28, 2020
Accounting Policies [Abstract]
Business and Basis of Presentation	We prepared the condensed consolidated financial statements as of and for the three months ended March 28, 2020 of Sleep Number Corporation and our 100%-owned subsidiaries (Sleep Number or the Company), without audit, pursuant to the rules and regulations of the Securities and Exchange Commission (SEC) and they reflect, in the opinion of management, all normal recurring adjustments necessary to present fairly our financial position as of March 28, 2020 and December 28, 2019, and the consolidated results of operations and cash flows for the periods presented. Our historical and quarterly consolidated results of operations may not be indicative of the results that may be achieved for the full year or any future period. Additionally, based on the duration and severity of the current global situation involving the novel coronavirus (COVID-19) pandemic, including but not limited to general economic conditions, consumer confidence, store closings mandated by federal, state or local authorities and possible supply chain disruptions, the extent to which COVID-19 will impact our business and our consolidated financial results will depend on future developments, which are highly uncertain and cannot be predicted. Certain information and footnote disclosures normally included in financial statements prepared in accordance with U.S. generally accepted accounting principles (GAAP) have been condensed or omitted pursuant to such rules and regulations. These condensed consolidated financial statements should be read in conjunction with our most recent audited consolidated financial statements and related notes included in our Annual Report on Form 10-K for the fiscal year ended December 28, 2019 and other recent filings with the SEC.
Use of Estimates	The preparation of condensed consolidated financial statements in conformity with U.S. GAAP requires us to make estimates and assumptions. These estimates and assumptions affect the reported amounts of assets and liabilities, disclosure of contingent assets and liabilities at the date of the condensed consolidated financial statements, and the reported amounts of sales, expenses and income taxes during the reporting period. Predicting future events is inherently an imprecise activity and, as such, requires the use of judgment. As future events and their effects cannot be determined with precision, actual results could differ significantly from these estimates. In addition, during the current environment involving COVID-19, predicting future events will be especially challenging for management. Changes in these estimates will be reflected in the consolidated financial statements in future periods and could be material. Our critical accounting policies consist of stock-based compensation, goodwill and indefinite-lived intangible assets, warranty liabilities and revenue recognition.
Consolidation	The condensed consolidated financial statements include the accounts of Sleep Number Corporation and our 100%-owned subsidiaries. All significant intra-entity balances and transactions have been eliminated in consolidation.
New Accounting Pronouncements	New Accounting Pronouncements Accounting Guidance Not Yet Adopted In April 2020, the Financial Accounting Standards Board (FASB) issued a Staff Q&A, Topic 842 and 840: Accounting For Lease Concessions Related to the Effects of the COVID-19 Pandemic . To provide clarity in response to the COVID-19 pandemic crisis, the FASB staff believes that it would be acceptable for entities to make an election to account for lease concessions related to the effects of the COVID-19 pandemic consistent with how those concessions would be accounted for under Topic 842 as though enforceable rights and obligations for those concessions existed (regardless of whether those enforceable rights and obligations for the concessions explicitly exist in the contract). Consequently, for concessions related to the effects of the COVID-19 pandemic, we will not have to analyze each contract to determine whether enforceable rights and obligations for concessions exist in the contract and can elect to apply or not apply the lease modification guidance in Topic 842 to those contracts. This election is available for concessions related to the effects of the COVID-19 pandemic that do not result in a substantial increase in the rights of the lessor or our obligations as the lessee. For example, this election is available for concessions that result in the total payments required by the modified contract being substantially the same as or less than total payments required by the original contract. The FASB staff expects that reasonable judgment will be exercised in making those determinations. Some concessions will provide a deferral of payments with no substantive changes to the consideration in the original contract. A deferral affects the timing, but the amount of the consideration is substantially the same as that required by the original contract. The staff expects that there will be multiple ways to account for those deferrals, none of which the staff believes are more preferable than the others. Two of those methods are: a. Account for the concessions as if no changes to the lease contract were made. Under that accounting, a lessor would increase its lease receivable, and a lessee would increase its accounts payable as receivables/payments accrue. In its income statement, a lessor would continue to recognize income, and a lessee would continue to recognize expense during the deferral period. b. Account for the deferred payments as variable lease payments.
Leases	We lease our retail, office and manufacturing space under operating leases which, in addition to the minimum lease payments, may require payment of a proportionate share of the real estate taxes and certain building operating expenses. While our local market development approach generally results in long-term participation in given markets, our retail store leases generally provide for an initial lease term of five three Our operating lease costs include facility, vehicle and equipment lease costs, but exclude variable lease costs. Operating lease costs are recognized on a straight-line basis over the lease term, after consideration of rent escalations and rent holidays. The lease term for purposes of the calculation begins on the earlier of the lease commencement date or the date we take possession of the property. During lease renewal negotiations that extend beyond the original lease term, we estimate straight-line rent expense based on current market conditions. Variable lease costs are recorded when it is probable the cost has been incurred and the amount can be reasonably estimated. Future payments for real estate taxes and certain building operating expenses for which we are obligated are not included in operating lease costs. At March 28, 2020, our finance right-of-use assets and lease liabilities were not significant.

Inventories (Tables)

Inventories (Tables)	3 Months Ended
	Mar. 28, 2020
Inventory Disclosure [Abstract]
Schedule of Inventories	Inventories consisted of the following (in thousands): March 28, December 28, Raw materials $ 4,905 $ 6,231 Work in progress 81 31 Finished goods 77,035 80,803 $ 82,021 $ 87,065

Goodwill and Intangible Asset_2

Goodwill and Intangible Assets, Net (Tables)	3 Months Ended
	Mar. 28, 2020
Goodwill and Intangible Assets Disclosure [Abstract]
Schedule of Annual Amortization of Definite-Lived Tangible Assets	Annual amortization for definite-lived intangible assets for subsequent years are as follows (in thousands): March 28, 2020 (excluding the three months ended March 28, 2020) $ 1,668 2021 2,181 2022 2,181 2023 1,209 Thereafter — Total future amortization for definite-lived intangible assets $ 7,239

Credit Agreement (Tables)

Credit Agreement (Tables)	3 Months Ended
	Mar. 28, 2020
Debt Disclosure [Abstract]
Schedule of Borrowings Under Credit Facility	The following table summarizes our borrowings under the credit facility ($ in thousands): March 28, December 28, Outstanding borrowings $ 446,003 $ 231,000 Outstanding letters of credit $ 3,997 $ 3,497 Additional borrowing capacity $ — $ 215,503 Weighted-average interest rate 2.9 % 3.5 %

Leases (Tables)

Leases (Tables)	3 Months Ended
	Mar. 28, 2020
Leases [Abstract]
Schedule of Operating Lease Costs	Operating lease costs were as follows (in thousands): Three Months Ended March 28, March 30, Operating lease costs (1) $ 22,949 $ 21,056 Variable lease costs $ 12 $ 499 ___________________________ (1) Includes short-term lease costs which are not significant.
Schedule of Maturities of Operating Lease Liabilities and Aggregate Future Commitments Under Operating Leases	The maturities of operating lease liabilities as of March 28, 2020, were as follows (in thousands): 2020 (excluding the three months ended March 28, 2020) (1) 63,309 2021 78,083 2022 69,672 2023 59,702 2024 47,918 2025 39,059 Thereafter 88,488 Total lease payments (2) 446,231 Less: Interest 91,473 Present value of operating lease liabilities (3) $ 354,758 ___________________________ (1) Subsequent to March 28, 2020, we renegotiated certain operating leases to defer approximately $3 million in lease payments from 2020 to future periods in response to store closings mandated by federal, state or local authorities and other economic issues related to COVID-19. (2) Total lease payments exclude $62 million of legally binding minimum lease payments for leases signed but not yet commenced. (3) Includes the current portion of $60 million for operating lease liabilities.
Schedule of Other Information Related Operating Leases	Other information related to operating leases was as follows: March 28, December 28, Weighted-average remaining lease term (years) 6.5 6.6 Weighted-average discount rate 7.1 % 7.2 % Three Months Ended (in thousands) March 28, March 30, Cash paid for amounts included in present value of operating lease liabilities $ 21,469 $ 19,757 Right-of-use assets obtained in exchange for operating lease liabilities $ 10,954 $ 16,153

Repurchases of Common Stock (Ta

Repurchases of Common Stock (Tables)	3 Months Ended
	Mar. 28, 2020
Repurchases Of Common Stock [Abstract]
Schedule of Repurchases of Common Stock	Repurchases of our common stock were as follows (in thousands): Three Months Ended March 28, March 30, Amount repurchased under Board-approved share repurchase program $ 38,111 $ 40,900 Amount repurchased in connection with the vesting of employee restricted stock grants 2,841 6,082 Total amount repurchased (based on trade dates) $ 40,952 $ 46,982

Revenue Recognition (Tables)

Revenue Recognition (Tables)	3 Months Ended
	Mar. 28, 2020
Revenue Recognition [Abstract]
Schedule of Deferred Contract Liabilities and Deferred Contract Assets	Deferred contract assets and deferred contract liabilities are included in our condensed consolidated balance sheets as follows (in thousands): March 28, December 28, Deferred Contract Assets included in: Other current assets $ 24,408 $ 23,568 Other non-current assets 35,078 33,782 $ 59,486 $ 57,350 March 28, December 28, Deferred Contract Liabilities included in: Other current liabilities $ 34,515 $ 34,204 Other non-current liabilities 46,512 44,970 $ 81,027 $ 79,174
Disaggregation of Revenue	Net sales from each of our channels was as follows (in thousands): Three Months Ended March 28, March 30, Retail $ 435,357 $ 392,226 Online and phone 35,917 29,763 Company-Controlled channel 471,274 421,989 Wholesale/Other channel 1,292 4,456 Total $ 472,566 $ 426,445
Schedule of Sales Return Liability	The activity in the sales returns liability account was as follows (in thousands): Three Months Ended March 28, March 30, Balance at beginning of year $ 19,809 $ 19,907 Additions that reduce net sales 22,258 21,726 Deductions from reserves (19,794) (21,676) Balance at end of period $ 22,273 $ 19,957

Stock-Based Compensation Expe_2

Stock-Based Compensation Expense (Tables)	3 Months Ended
	Mar. 28, 2020
Share-based Payment Arrangement [Abstract]
Schedule of Stock-Based Compensation Expense	Total stock-based compensation expense was as follows (in thousands): Three Months Ended March 28, March 30, Stock awards $ 1,405 $ 3,033 Stock options 646 605 Total stock-based compensation expense (1) 2,051 3,638 Income tax benefit 496 898 Total stock-based compensation expense, net of tax $ 1,555 $ 2,740 (1) Decrease in 2020 stock-based compensation expense reflects the cumulative impact of the change in the expected achievements of certain performance targets.

Net Income Per Common Share (Ta

Net Income Per Common Share (Tables)	3 Months Ended
	Mar. 28, 2020
Earnings Per Share [Abstract]
Components of Basic and Diluted Net Income per Share	The components of basic and diluted net income per share were as follows (in thousands, except per share amounts): Three Months Ended March 28, March 30, Net income $ 39,140 $ 25,418 Reconciliation of weighted-average shares outstanding: Basic weighted-average shares outstanding 27,858 30,620 Dilutive effect of stock-based awards 914 1,118 Diluted weighted-average shares outstanding 28,772 31,738 Net income per share – basic $ 1.40 $ 0.83 Net income per share – diluted $ 1.36 $ 0.80

Commitments and Contingencies (

Commitments and Contingencies (Tables)	3 Months Ended
	Mar. 28, 2020
Commitments and Contingencies Disclosure [Abstract]
Warranty Liabilities	The activity in the accrued warranty liabilities account was as follows (in thousands): Three Months Ended March 28, 2020 March 30, 2019 Balance at beginning of year $ 11,345 $ 10,389 Additions charged to costs and expenses for current-year sales 2,628 3,192 Deductions from reserves (2,779) (3,127) Changes in liability for pre-existing warranties during the current year, including expirations 297 1,166 Balance at end of period $ 11,491 $ 11,620

Fair Value Measurements (Detail

Fair Value Measurements (Details) - Level 1 - USD ($) $ in Millions	Mar. 28, 2020	Dec. 28, 2019
Other Non-current Assets | Available-for-sale Securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities assets funding the deferred compensation plan	$ 9	$ 8
Other Noncurrent Liabilities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Deferred compensation plan liability	$ 9	$ 8

Inventories - Schedule of Inven

Inventories - Schedule of Inventories (Details) - USD ($) $ in Thousands	Mar. 28, 2020	Dec. 28, 2019
Inventory Disclosure [Abstract]
Raw materials	$ 4,905	$ 6,231
Work in progress	81	31
Finished goods	77,035	80,803
Inventories	$ 82,021	$ 87,065

Goodwill and Intangible Asset_3

Goodwill and Intangible Assets, Net - Additional Information (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 28, 2020	Mar. 30, 2019	Dec. 28, 2019
Goodwill And Intangible Assets [Line Items]
Goodwill	$ 64		$ 64
Amortization expense definite-lived intangible assets	0.5	$ 0.5
Developed Technologies
Goodwill And Intangible Assets [Line Items]
Gross carrying amount	19		19
Accumulated amortization	12		11
Trade Names
Goodwill And Intangible Assets [Line Items]
Indefinite-lived trade name/trademarks	$ 1.4		$ 1.4

Goodwill and Intangible Assets-

Goodwill and Intangible Assets- Annual Amortization for Definite-Lived Intangible (Details) $ in Thousands	Mar. 28, 2020USD ($)
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]
2020 (excluding the three months ended March 28, 2020)	$ 1,668
2021	2,181
2022	2,181
2023	1,209
Thereafter	0
Total future amortization for definite-lived intangible assets	$ 7,239

Credit Agreement - Additional I

Credit Agreement - Additional Information (Details) - USD ($) $ in Thousands	Apr. 03, 2020	Mar. 28, 2020	Mar. 17, 2020	Dec. 28, 2019
February 2020 Amendment
Line of Credit Facility [Line Items]
Current borrowing capacity		$ 450,000
Maximum leverage ratio		450.00%
Minimum interest coverage ratio		300.00%
Additional borrowing capacity		$ 0	$ 262,000
February 2020 Amendment | Subsequent Event
Line of Credit Facility [Line Items]
Current borrowing capacity	$ 525,000
Additional borrowing capacity	$ 75,000
Debt instrument term	364 days
Term loan	$ 75,000
February 2020 Amendment | London Interbank Offered Rate (LIBOR) | Subsequent Event
Line of Credit Facility [Line Items]
Initial interest rate	3.27%
LIBOR rate	0.75%
February 2019 Amendment
Line of Credit Facility [Line Items]
Additional borrowing capacity				$ 215,503

Credit Agreement - Schedule of

Credit Agreement - Schedule of Borrowings Under Credit Facility (Details) - USD ($) $ in Thousands	Mar. 28, 2020	Mar. 17, 2020	Dec. 28, 2019
Line of Credit Facility [Line Items]
Borrowings under revolving credit facility	$ 446,003		$ 231,000
February 2020 Amendment
Line of Credit Facility [Line Items]
Borrowings under revolving credit facility	446,003
Outstanding letters of credit	3,997
Additional borrowing capacity	$ 0	$ 262,000
Weighted-average interest rate	2.90%
February 2019 Amendment
Line of Credit Facility [Line Items]
Borrowings under revolving credit facility			231,000
Outstanding letters of credit			3,497
Additional borrowing capacity			$ 215,503
Weighted-average interest rate			3.50%

Leases - Additional Information

Leases - Additional Information (Details) - USD ($) $ in Thousands	May 01, 2020	Mar. 28, 2020	Dec. 28, 2019
Lessee, Lease, Description [Line Items]
Lessee operating lease, lease not yet commenced, minimum lease payments excluded		$ 62,000
Operating lease liabilities		$ 60,210	$ 59,561
Subsequent Event
Lessee, Lease, Description [Line Items]
Operating lease deferred payments due to COVID 19	$ 3,000
Minimum | Retail Store Leases
Lessee, Lease, Description [Line Items]
Lease term		5 years
Minimum | Lease Vehicles and Certain Equipment Under Operating Leases
Lessee, Lease, Description [Line Items]
Lease term		3 years
Maximum | Retail Store Leases
Lessee, Lease, Description [Line Items]
Lease term		10 years
Maximum | Office and Manufacturing Leases
Lessee, Lease, Description [Line Items]
Lease term		15 years
Maximum | Lease Vehicles and Certain Equipment Under Operating Leases
Lessee, Lease, Description [Line Items]
Lease term		5 years

Leases - Schedule of Operating

Leases - Schedule of Operating Lease Costs (Details) - USD ($) $ in Thousands		3 Months Ended
		Mar. 28, 2020	Mar. 30, 2019
Leases [Abstract]
Operating lease costs	[1]	$ 22,949	$ 21,056
Variable lease costs		$ 12	$ 499
[1]	Includes short-term lease costs which are not significant.

Leases - Schedule of Maturities

Leases - Schedule of Maturities of Operating Lease Liabilities and Aggregate Future Commitments Under Operating Leases (Details) $ in Thousands	Mar. 28, 2020USD ($)
Leases [Abstract]
2020 (excluding the three months ended March 28, 2020)	$ 63,309	[1]
2021	78,083
2022	69,672
2023	59,702
2024	47,918
2025	39,059
Thereafter	88,488
Total lease payments	446,231	[2]
Less: Interest	91,473
Present value of operating lease liabilities	$ 354,758	[3]
[1]	Subsequent to March 28, 2020, we renegotiated certain operating leases to defer approximately $3 million in lease payments from 2020 to future periods in response to store closings mandated by federal, state or local authorities and other economic issues related to COVID-19.
[2]	Total lease payments exclude $62 million of legally binding minimum lease payments for leases signed but not yet commenced.
[3]	Includes the current portion of $60 million for operating lease liabilities.

Leases - Schedule of Other Info

Leases - Schedule of Other Information Related Operating Leases (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 28, 2020	Mar. 30, 2019	Dec. 28, 2019
Leases [Abstract]
Weighted-average remaining lease term (years)	6 years 6 months		6 years 7 months 6 days
Weighted-average discount rate	7.10%		7.20%
Cash paid for amounts included in present value of operating lease liabilities	$ 21,469	$ 19,757
Right-of-use assets obtained in exchange for operating lease liabilities	$ 10,954	$ 16,153

Repurchases of Common Stock - S

Repurchases of Common Stock - Schedule of Repurchase of Common Stock (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 28, 2020	Mar. 30, 2019
Repurchases Of Common Stock [Abstract]
Amount repurchased under Board-approved share repurchase program	$ 38,111	$ 40,900
Amount repurchased in connection with the vesting of employee restricted stock grants	2,841	6,082
Total amount repurchased	$ 40,952	$ 46,982

Repurchases of Common Stock - A

Repurchases of Common Stock - Additional Information (Details) $ in Millions	Mar. 28, 2020USD ($)
Repurchases Of Common Stock [Abstract]
Remaining authorized stock purchase plan	$ 437

Revenue Recognition - Schedule

Revenue Recognition - Schedule of Deferred Contract Assets and Deferred Contract Liabilities (Details) - USD ($) $ in Thousands	Mar. 28, 2020	Dec. 28, 2019
Deferred Contract Assets included in:
Deferred contract assets	$ 59,486	$ 57,350
Deferred Contract Liabilities included in:
Deferred contract liabilities	81,027	79,174
Other Current Assets
Deferred Contract Assets included in:
Other current assets	24,408	23,568
Other Non-current Assets
Deferred Contract Assets included in:
Other non-current assets	35,078	33,782
Other Current Liabilities
Deferred Contract Liabilities included in:
Other current liabilities	34,515	34,204
Other Non-current Liabilities
Deferred Contract Liabilities included in:
Other non-current liabilities	$ 46,512	$ 44,970

Revenue Recognition - Additiona

Revenue Recognition - Additional Information (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 28, 2020	Mar. 30, 2019
Disaggregation of Revenue [Line Items]
Revenue recognized, included in beginning deferred contract liability balance	$ 10	$ 9
Transferred at Point in Time
Disaggregation of Revenue [Line Items]
Revenue from goods and services transferred to customers at a point in time	98.00%	98.00%

Revenue Recognition - Disaggreg

Revenue Recognition - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 28, 2020	Mar. 30, 2019
Disaggregation of Revenue [Line Items]
Net sales	$ 472,566	$ 426,445
Retail
Disaggregation of Revenue [Line Items]
Net sales	435,357	392,226
Online and phone
Disaggregation of Revenue [Line Items]
Net sales	35,917	29,763
Company-Controlled channel
Disaggregation of Revenue [Line Items]
Net sales	471,274	421,989
Wholesale/Other channel
Disaggregation of Revenue [Line Items]
Net sales	$ 1,292	$ 4,456

Revenue Recognition - Schedul_2

Revenue Recognition - Schedule of Sales Return Liability (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 28, 2020	Mar. 30, 2019
Sales Return Liability [Roll Forward]
Balance at beginning of year	$ 19,809	$ 19,907
Additions that reduce net sales	22,258	21,726
Deductions from reserves	(19,794)	(21,676)
Balance at end of period	$ 22,273	$ 19,957

Stock-Based Compensation Expe_3

Stock-Based Compensation Expense - Schedule of Stock-Based Compensation Expense (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 28, 2020		Mar. 30, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total stock based compensation expense	$ 2,051	[1]	$ 3,638
Income tax benefit	496		898
Total stock-based compensation expense, net of tax	1,555		2,740
Stock awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total stock based compensation expense	1,405		3,033
Stock options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total stock based compensation expense	$ 646		$ 605
[1]	Decrease in 2020 stock-based compensation expense reflects the cumulative impact of the change in the expected achievements of certain performance targets.

Profit Sharing and 401(k) Plan

Profit Sharing and 401(k) Plan - Additional Information (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 28, 2020	Mar. 30, 2019
Profit Sharing And401 K Plan [Abstract]
Employee compensation deferral	50.00%
Employer contributions	$ 1.6	$ 1.5

Net Income per Common Share - C

Net Income per Common Share - Components of Basic and Diluted Net Income per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 28, 2020	Mar. 30, 2019
Earnings Per Share, Basic and Diluted, Other Disclosures [Abstract]
Net income	$ 39,140	$ 25,418
Reconciliation of weighted-average shares outstanding:
Basic weighted-average shares outstanding	27,858,000	30,620,000
Dilutive effect of stock-based awards	914,000	1,118,000
Diluted weighted-average shares outstanding	28,772,000	31,738,000
Net income per share – basic (in dollars per share)	$ 1.40	$ 0.83
Net income per share – diluted (in dollars per share)	$ 1.36	$ 0.80

Commitments and Contingencies W

Commitments and Contingencies Warranty Liabilities (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 28, 2020	Mar. 30, 2019
Warranty Liabilities [Roll Forward]
Balance at beginning of year	$ 11,345	$ 10,389
Additions charged to costs and expenses for current-year sales	2,628	3,192
Deductions from reserves	(2,779)	(3,127)
Changes in liability for pre-existing warranties during the current year, including expirations	297	1,166
Balance at end of period	$ 11,491	$ 11,620