ThredUp (TDUP) 10-Q 9 May 23 2023 Q1 Quarterly report Financial data

Cover

Cover - shares	3 Months Ended
	Mar. 31, 2023	May 02, 2023
Document Information [Line Items]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Mar. 31, 2023
Document Transition Report	false
Entity File Number	001-40249
Entity Registrant Name	ThredUp Inc.
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	26-4009181
Entity Address, Address Line One	969 Broadway
Entity Address, Address Line Two	Suite 200
Entity Address, City or Town	Oakland
Entity Address, State or Province	CA
Entity Address, Postal Zip Code	94607
City Area Code	415
Local Phone Number	402-5202
Title of 12(b) Security	Class A Common Stock, $0.0001 par value per share
Trading Symbol	TDUP
Security Exchange Name	NASDAQ
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Accelerated Filer
Entity Small Business	true
Entity Emerging Growth Company	true
Entity Ex Transition Period	false
Entity Shell Company	false
Amendment Flag	false
Entity Central Index Key	0001484778
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2023
Document Fiscal Period Focus	Q1
Class A common stock
Document Information [Line Items]
Entity Common Stock, Shares Outstanding		72,605,495
Class B common stock
Document Information [Line Items]
Entity Common Stock, Shares Outstanding		30,484,786

Condensed Consolidated Balance

Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Current assets:
Cash and cash equivalents	$ 50,739	$ 38,029
Marketable securities	42,733	66,902
Accounts receivable, net	4,232	4,669
Inventory	20,933	17,519
Other current assets	6,338	7,076
Total current assets	124,975	134,195
Operating lease right-of-use assets	45,180	46,153
Property and equipment, net	95,806	92,482
Goodwill	11,805	11,592
Intangible assets	10,044	10,499
Other assets	6,960	7,027
Total assets	294,770	301,948
Current liabilities:
Accounts payable	12,747	7,800
Accrued and other current liabilities	47,976	50,155
Seller payable	17,868	16,166
Operating lease liabilities, current	5,792	6,413
Current portion of long-term debt	3,882	3,879
Total current liabilities	88,265	84,413
Operating lease liabilities, non-current	47,521	48,727
Long-term debt, net of current portion	24,831	25,788
Other non-current liabilities	3,066	3,019
Total liabilities	163,683	161,947
Commitments and contingencies (Note 10)
Stockholders’ equity:
Class A and B common stock, $0.0001 par value; 1,120,000 shares authorized as of March 31, 2023 and December 31, 2022; 102,836 and 101,532 shares issued and outstanding as of March 31, 2023 and December 31, 2022, respectively	10	10
Additional paid-in capital	561,577	551,852
Accumulated other comprehensive loss	(3,080)	(4,234)
Accumulated deficit	(427,420)	(407,627)
Total stockholders’ equity	131,087	140,001
Total liabilities and stockholders’ equity	$ 294,770	$ 301,948

Condensed Consolidated Balanc_2

Condensed Consolidated Balance Sheets (Parenthetical) - $ / shares	Mar. 31, 2023	Dec. 31, 2022
Stockholders’ equity:
Common stock, par value (in dollars per share)	$ 0.0001	$ 0.0001
Common stock, shares authorized (in shares)	1,120,000,000	1,120,000,000
Common stock, shares issued (in shares)	102,836,000	101,532,000
Common stock, shares outstanding (in shares)	102,836,000	101,532,000

Condensed Consolidated Statemen

Condensed Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Revenue:
Total revenue	$ 75,922	$ 72,695
Cost of revenue:
Total cost of revenue	24,829	22,467
Gross profit	51,093	50,228
Operating expenses:
Operations, product, and technology	38,347	39,161
Marketing	16,870	16,978
Sales, general, and administrative	16,059	14,664
Total operating expenses	71,276	70,803
Operating loss	(20,183)	(20,575)
Interest expense	77	423
Other income, net	(476)	(303)
Loss before provision for income taxes	(19,784)	(20,695)
Provision for income taxes	9	13
Net loss	$ (19,793)	$ (20,708)
Loss per share, basic (in dollars per share)	$ (0.19)	$ (0.21)
Loss per share, diluted (in dollars per share)	$ (0.19)	$ (0.21)
Weighted-average shares used in computing loss per share, basic (in shares)	101,984	98,624
Weighted-average shares used in computing loss per share, diluted (in shares)	101,984	98,624
Consignment
Revenue:
Total revenue	$ 46,479	$ 47,435
Cost of revenue:
Total cost of revenue	9,220	10,049
Product
Revenue:
Total revenue	29,443	25,260
Cost of revenue:
Total cost of revenue	$ 15,609	$ 12,418

Condensed Consolidated Statem_2

Condensed Consolidated Statements of Comprehensive Loss - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Statement of Comprehensive Income [Abstract]
Net loss	$ (19,793)	$ (20,708)
Other comprehensive income (loss), net of tax:
Foreign currency translation adjustments	544	(708)
Unrealized gain (loss) on available-for-sale securities	610	(1,002)
Total other comprehensive income (loss)	1,154	(1,710)
Total comprehensive loss	$ (18,639)	$ (22,418)

Condensed Consolidated Statem_3

Condensed Consolidated Statements of Stockholders' Equity - USD ($) shares in Thousands, $ in Thousands	Total	Common Stock	Additional Paid-in Capital	Accumulated Other Comprehensive Loss	Accumulated Deficit
Beginning balance (in shares) at Dec. 31, 2021		98,435
Beginning balance at Dec. 31, 2021	$ 205,734	$ 10	$ 522,161	$ (1,094)	$ (315,343)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock from exercise of stock options and restricted stock units (in shares)		507
Issuance of common stock from exercise of stock options and restricted stock units	754		754
Stock-based compensation	3,618		3,618
Net income	(20,708)				(20,708)
Other comprehensive (loss) income	(1,710)			(1,710)
Ending balance (in shares) at Mar. 31, 2022		98,942
Ending balance at Mar. 31, 2022	$ 187,688	$ 10	526,533	(2,804)	(336,051)
Beginning balance (in shares) at Dec. 31, 2022	101,532	101,532
Beginning balance at Dec. 31, 2022	$ 140,001	$ 10	551,852	(4,234)	(407,627)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock from exercise of stock options and restricted stock units (in shares)		1,484
Issuance of common stock from exercise of stock options and restricted stock units	275		275
Stock-based compensation	9,720		9,720
Shares withheld related to net share settlement (in shares)		(180)
Shares withheld related to net share settlement	(270)		(270)
Net income	(19,793)				(19,793)
Other comprehensive (loss) income	$ 1,154			1,154
Ending balance (in shares) at Mar. 31, 2023	102,836	102,836
Ending balance at Mar. 31, 2023	$ 131,087	$ 10	$ 561,577	$ (3,080)	$ (427,420)

Condensed Consolidated Statem_4

Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Cash flows from operating activities:
Net loss	$ (19,793)	$ (20,708)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization	3,681	3,271
Stock-based compensation expense	9,391	3,523
Reduction in carrying amount of right-of-use assets	1,207	1,398
Other	41	481
Changes in operating assets and liabilities:
Accounts receivable, net	1,010	1,143
Inventory	(3,157)	(2,313)
Other current and non-current assets	22	(2,162)
Accounts payable	4,102	1,601
Accrued and other current liabilities	(1,851)	4,912
Seller payable	1,696	1,521
Operating lease liabilities	(2,062)	539
Other non-current liabilities	1,255	115
Net cash used in operating activities	(4,458)	(6,679)
Cash flows from investing activities:
Maturities of marketable securities	24,579	4,726
Purchases of property and equipment	(5,679)	(12,638)
Net cash provided by (used in) investing activities	18,900	(7,912)
Cash flows from financing activities:
Repayment of debt	(1,000)	(2,000)
Proceeds from exercise of stock options and employee stock purchase plan	446	965
Payment of withholding taxes on stock-based awards	(638)	(156)
Net cash used in financing activities	(1,192)	(1,191)
Effect of exchange rate changes on cash, cash equivalents, and restricted cash	(540)	(172)
Net change in cash, cash equivalents, and restricted cash	12,710	(15,954)
Cash, cash equivalents, and restricted cash, beginning of period	44,051	91,840
Cash, cash equivalents, and restricted cash, end of period	$ 56,761	$ 75,886

Organization and Description of

Organization and Description of Business	3 Months Ended
	Mar. 31, 2023
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Organization and Description of Business	Organization and Description of BusinessThredUp Inc. (“thredUP” or the “Company”) was formed as a corporation in the State of Delaware in January 2009. thredUP operates a large resale platform that enables consumers to buy and sell primarily secondhand apparel, shoes, and accessories.

Significant Accounting Policies

Significant Accounting Policies	3 Months Ended
	Mar. 31, 2023
Accounting Policies [Abstract]
Significant Accounting Policies	Significant Accounting Policies Basis of Presentation and Use of Estimates The accompanying unaudited condensed consolidated financial statements include the accounts of the Company and its wholly-owned subsidiaries. All intercompany account balances and transactions have been eliminated upon consolidation. The unaudited condensed consolidated financial statements were prepared in accordance with the United States (“U.S.”) Generally Accepted Accounting Principles (“GAAP”) for interim financial information and with the instructions to Quarterly Report on Form 10‑Q and Article 10 of Regulation S-X. As permitted under those rules, certain footnotes or other financial information can be condensed or omitted. The preparation of consolidated financial statements in accordance with GAAP requires management to make estimates and assumptions that affect the amounts that are reported in the consolidated financial statements and the related disclosures. Actual results could differ from those estimates. Significant items subject to such estimates and assumptions include, but are not limited to, the useful lives of property and equipment and intangibles, allowance for sales returns, breakage on loyalty points and rewards and gift cards, valuation of inventory, stock-based compensation, right-of-use assets, goodwill and acquired intangibles, and income taxes. In the opinion of management, the accompanying unaudited condensed consolidated financial statements reflect all normal and recurring adjustments necessary to present fairly the financial position of the Company as of March 31, 2023, and the results of operations and cash flows for the interim periods presented. The accompanying unaudited condensed consolidated financial statements and related financial information should be read in conjunction with the Company’s audited consolidated financial statements and related notes included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2022 (the “2022 10-K”). Reclassifications Certain reclassifications were made to the prior period condensed consolidated statement of cash flows to conform to the current period presentation. Recently Adopted Accounting Pronouncements In June 2016, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) No. 2016-13, Financial Instruments — Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments . This ASU changes the impairment model for most financial assets, requiring the use of an expected loss model which requires entities to estimate the lifetime expected credit loss on financial assets measured at amortized cost. Such credit losses will be recorded as an allowance to offset the amortized cost of the financial asset, resulting in a net presentation of the amount expected to be collected on the financial asset. In addition, credit losses relating to available-for-sale debt securities will now be recorded through an allowance for credit losses rather than as a direct write-down to the security. This standard is effective for fiscal years beginning after December 15, 2022, including interim periods within those fiscal years. The adoption of this guidance during the first quarter of 2023 did not have a material impact on the Company’s condensed consolidated financial statements. Revenue from Loyalty Reward Redemption and Expiration As of March 31, 2023 and December 31, 2022, the Company had a liability of $3.3 million and $3.3 million, respectively, related to its customer loyalty program, which is included in accrued and other current liabilities within the Company’s condensed consolidated balance sheets. The Company recognized revenue from loyalty reward redemption of $2.1 million and $2.7 million for the three months ended March 31, 2023 and 2022, respectively. Gift Cards and Site Credits The Company sells thredUP gift cards on its e-commerce website. thredUP gift cards do not expire or lose value over periods of inactivity. The Company accounts for gift cards by recognizing a gift card liability at the time a gift card is delivered to the customer. As of March 31, 2023 and December 31, 2022, $10.8 million and $10.9 million of gift card liability, respectively, was included in accrued and other current liabilities within the Company’s condensed consolidated balance sheets. Revenue from gift cards is generally recognized when the gift cards are redeemed by the customer and amounted to $0.5 million and $0.3 million for the three months ended March 31, 2023 and 2022, respectively. The Company issues site credits for order refunds. Site credits can be applied toward future charges but may not be converted into cash. Site credits may also be converted to thredUP gift cards after one year at the discretion of the Company. These credits are recognized as revenue when used. As of March 31, 2023 and December 31, 2022, $6.3 million and $7.2 million, respectively, of such customer site credits were included in accrued and other current liabilities within the Company’s condensed consolidated balance sheets. Revenue recognized from the redemption of site credits was $9.4 million and $11.0 million for the three months ended March 31, 2023 and 2022, respectively. The Company recognizes breakage revenue when it determines that the redemption of gift cards and site credits is remote. Breakage was not material for the three months ended March 31, 2023 and 2022. Cash, Cash Equivalents and Restricted Cash The following table provides a reconciliation of cash, cash equivalents and restricted cash reported within the Company’s condensed consolidated balance sheets that sum to the total of the same such amounts shown in the Company’s condensed consolidated statements of cash flows: March 31, December 31, (in thousands) Cash and cash equivalents $ 50,739 $ 38,029 Restricted cash included in Other current assets 475 383 Restricted cash included in Other assets 5,547 5,639 Total cash, cash equivalents, and restricted cash shown in the statement of cash flows $ 56,761 $ 44,051 Fair Value Measurements The Company applies the provisions of FASB ASC Topic 820, Fair Value Measurements and Disclosures , for its financial and non-financial assets and liabilities. ASC 820 defines fair value as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. ASC 820 establishes a fair value hierarchy, which prioritizes the inputs used in measuring fair value into three broad levels as follows: • Level 1 inputs are quoted prices (unadjusted) in active markets for identical assets or liabilities that the reporting entity has the ability to access at the measurement date. • Level 2 inputs include quoted prices for similar assets or liabilities in active markets, quoted prices for identical or similar assets or liabilities in markets that are not active, inputs other than quoted prices that are observable for the asset or liability and inputs that are derived principally from or corroborated by observable market data by correlation or other means. • Level 3 inputs are unobservable inputs for the asset or liability. The Company measures certain assets and liabilities at fair value as discussed throughout the notes to its condensed consolidated financial statements. As of March 31, 2023 and December 31, 2022, the carrying amounts of the Company’s accounts receivable, other current assets, other assets, accounts payable, seller payable and accrued and other current liabilities approximated their estimated fair values due to their relatively short maturities. Management believes the terms of its long-term variable-rate debt reflect current market conditions for an instrument with similar terms and maturity, and as such, the carrying value of the Company’s long-term debt approximated its fair value as of March 31, 2023 and December 31, 2022.

Financial Instruments and Fair

Financial Instruments and Fair Value Measurements	3 Months Ended
	Mar. 31, 2023
Fair Value Disclosures [Abstract]
Financial Instruments and Fair Value Measurements	Financial Instruments and Fair Value Measurements The following tables provide information about the Company’s financial instruments that are measured at fair value on a recurring basis and indicate the fair value hierarchy of the valuation techniques utilized to determine such values as of March 31, 2023 and December 31, 2022: March 31, 2023 Level 1 Level 2 Level 3 Total (in thousands) Assets: Cash equivalents: Money market funds $ 10,052 $ — $ — $ 10,052 Commercial paper — 21,062 — 21,062 U.S. government agency discount notes 2,992 — — 2,992 Total cash equivalents 13,044 21,062 — 34,106 Marketable securities: Corporate debt securities 13,505 — — 13,505 U.S. treasury securities 12,322 — — 12,322 U.S. government agency bonds 16,906 — — 16,906 Total marketable securities 42,733 — — 42,733 Total assets at fair value $ 55,777 $ 21,062 $ — $ 76,839 December 31, 2022 Level 1 Level 2 Level 3 Total (in thousands) Assets: Cash equivalents: Money market funds $ 1,110 $ — $ — $ 1,110 Commercial paper — 14,460 — 14,460 Total cash equivalents 1,110 14,460 — 15,570 Marketable securities: Corporate debt securities 25,488 — — 25,488 U.S. treasury securities 19,176 — — 19,176 U.S. government agency bonds 22,238 — — 22,238 Total marketable securities 66,902 — — 66,902 Total assets at fair value $ 68,012 $ 14,460 $ — $ 82,472 The following tables summarize the cost, gross unrealized gains, gross unrealized losses and fair value of the marketable securities as of March 31, 2023 and December 31, 2022: March 31, 2023 Cost or Amortized Cost Unrealized Fair Value Gains Losses (in thousands) Corporate debt securities $ 13,568 $ — $ (63) $ 13,505 U.S. treasury securities 12,501 — (179) 12,322 U.S. government agency bonds 17,138 — (232) 16,906 Total $ 43,207 $ — $ (474) $ 42,733 December 31, 2022 Cost or Amortized Cost Unrealized Fair Value Gains Losses (in thousands) Corporate debt securities $ 25,774 $ — $ (286) $ 25,488 U.S. treasury securities 19,531 — (355) 19,176 U.S. government agency bonds 22,679 — (441) 22,238 Total $ 67,984 $ — $ (1,082) $ 66,902 As of March 31, 2023 and December 31, 2022, the Company’s cash equivalents approximated their estimated fair value. As such, there are no unrealized gains or losses related to the Company’s cash equivalents. For the Company’s marketable securities, which were all classified as available-for-sale, the Company utilizes third-party pricing services to obtain fair value. Third-party pricing methodologies incorporate bond terms and conditions, current performance data, proprietary pricing models, real-time quotes from contributing dealers, trade prices and other market data. The Company determined that the declines in the fair value of its marketable securities were not driven by credit-related factors. During the three months ended March 31, 2023 and 2022, the Company did not recognize any losses on its marketable securities due to credit-related factors. The Company’s money market funds, corporate debt securities, U.S. treasury securities, U.S. government agency bonds, and U.S. government agency discount notes were valued using Level 1 inputs because they are valued using quoted prices in active markets. The Company’s commercial paper is valued using Level 2 inputs because it is valued using quoted prices for similar assets or liabilities in active markets and quoted prices for identical or similar assets or liabilities in markets that are not active. There were no transfers between levels during the three months ended March 31, 2023. As of March 31, 2023, all of the $42.7 million carrying amount of marketable securities, all had a contractual maturity date of less than one year.

Property and Equipment, Net

Property and Equipment, Net	3 Months Ended
	Mar. 31, 2023
Property, Plant and Equipment [Abstract]
Property and Equipment, Net	Property and Equipment, Net Property and equipment, net consisted of the following: March 31, December 31, (in thousands) Property and equipment $ 130,819 $ 124,412 Less: accumulated depreciation and amortization (35,013) (31,930) Property and equipment, net $ 95,806 $ 92,482 Depreciation and amortization expense of property and equipment was $3.0 million and $2.6 million for the three months ended March 31, 2023 and 2022, respectively.

Goodwill and Other Intangible A

Goodwill and Other Intangible Assets	3 Months Ended
	Mar. 31, 2023
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill and Other Intangible Assets	Goodwill and Other Intangible AssetsGoodwill is primarily attributable to the planned growth in the combined business after the acquisition of Remix Global EAD (“Remix”). Goodwill is reviewed for impairment at least annually, absent any interim indicators of impairment. Goodwill was $11.8 million and $11.6 million as of March 31, 2023 and December 31, 2022, respectively. The increase in goodwill during the three months ended March 31, 2023 was due to foreign currency translation adjustments. The gross carrying amounts and accumulated amortization of the Company’s intangible assets with determinable lives as of March 31, 2023 and December 31, 2022 were as follows: March 31, 2023 Amortization Period Gross Carrying Amount Accumulated Amortization Net Carrying Amount (in years) (in thousands) Customer relationships 8 $ 4,902 $ (907) $ 3,995 Developed technology 3 4,619 (2,278) 2,341 Trademarks 9 4,436 (728) 3,708 Total $ 13,957 $ (3,913) $ 10,044 December 31, 2022 Amortization Period Gross Carrying Amount Accumulated Amortization Net Carrying Amount (in years) (in thousands) Customer relationships 8 $ 4,814 $ (742) $ 4,072 Developed technology 3 4,536 (1,864) 2,672 Trademarks 9 4,351 (596) 3,755 Total $ 13,701 $ (3,202) $ 10,499 The changes in the gross carrying amounts were due to foreign currency translation adjustments. Amortization expense related to developed technology, customer relationships, and trademarks is recorded within operations, product, and technology; sales, general, and administrative; and marketing expense, respectively, within the Company’s condensed consolidated statements of operations. Amortization expense of intangible assets with determinable lives was $0.6 million and $0.7 million for the three months ended March 31, 2023 and 2022, respectively.

Balance Sheet Components

Balance Sheet Components	3 Months Ended
	Mar. 31, 2023
Balance Sheet Related Disclosures [Abstract]
Balance Sheet Components	Balance Sheet Components Inventories consisted of the following: March 31, December 31, (in thousands) Work in process $ 2,432 $ 2,639 Finished goods 18,501 14,880 Total $ 20,933 $ 17,519 Work in process inventory relates to items that are currently undergoing preparation for sale, including itemization, cleaning, and repair. Accrued and other current liabilities consisted of the following: March 31, December 31, (in thousands) Gift card and site credit liabilities $ 17,093 $ 18,101 Accrued vendor liabilities 8,936 9,116 Deferred revenue 6,398 7,582 Accrued compensation 4,459 4,993 Allowance for returns 4,779 4,907 Accrued taxes 4,195 4,326 Accrued other 2,116 1,130 Total $ 47,976 $ 50,155

Long-Term Debt

Long-Term Debt	3 Months Ended
	Mar. 31, 2023
Debt Disclosure [Abstract]
Long-Term Debt	Long-Term Debt In February 2019, the Company entered into a loan and security agreement (“Term Loan”) with Western Alliance Bank for an aggregate amount of up to $40.0 million. The Company incurred an immaterial amount of debt issuance costs in connection with the Term Loan. The debt issuance costs are recorded on the Company’s condensed consolidated balance sheets and are being amortized over the life of the Term Loan using the effective-interest method. The Term Loan was subsequently amended several times, with the most recent amendment taking place in July 2022. As amended, the Term Loan matures on July 14, 2027 and provides for an aggregate borrowing amount of up to $70.0 million, which bears interest at the prime rate published in the Wall Street Journal plus a margin of 1.25%, with a floor of 6.00%. The Company incurred an immaterial amount of debt issuance costs in connection with the amendment. For accounting purposes, pursuant to FASB ASC Topic 470, Debt , this transaction was accounted for as a modification of the Term Loan. The debt issuance costs were recognized in interest expense within the Company’s condensed consolidated statement of operations during the third quarter of 2022. The Term Loan requires the Company to comply with certain financial covenants, including, among other things, liquidity requirements, minimum cash deposits with Western Alliance bank, performance metrics, and a debt service coverage ratio. The Term Loan also contains affirmative and negative covenants customary for financings of this type, including, among other things, limitations or prohibitions on repurchasing common shares, declaring and paying dividends and other distributions, redeeming and repurchasing certain other indebtedness, loans and investments, additional indebtedness, liens, mergers, asset sales and transactions with affiliates. In addition, the Term Loan contains customary events of default. As of March 31, 2023 and December 31, 2022, the Company was in compliance with its debt covenants under the Term Loan. The Term Loan is payable in consecutive monthly installments. Interest is due monthly on amounts outstanding under the Term Loan. The Company is also permitted to make voluntary prepayments without penalty or premium at any time. As of March 31, 2023 and December 31, 2022, the effective interest rate for borrowings under the Term Loan was 10.22% and 9.70%, respectively. During the three months ended March 31, 2023, the Company did not make any borrowings under the Term Loan and repaid a total of $1.0 million on amounts outstanding under the Term Loan. During the three months ended March 31, 2022, the Company did not make any borrowings under the Term Loan and repaid a total of $2.0 million on amounts outstanding under the Term Loan. As of March 31, 2023 and December 31, 2022, the amount outstanding under the Term Loan was $29.3 million and $30.3 million, respectively. During the three months ended March 31, 2023 and 2022, the Company incurred $0.7 million and $0.6 million, respectively, of interest costs relating to the Term Loan, of which $0.6 million and $0.1 million, respectively, was capitalized as part of an asset. As of March 31, 2023, annual scheduled principal payments of the Term Loan were as follows: Amount (in thousands) 2023 $ 3,000 2024 4,000 2025 4,000 2026 4,000 2027 14,333 Total principal payments 29,333 Less: unamortized debt discount (620) Less: current portion of long-term debt (3,882) Non-current portion of long-term debt $ 24,831

Common Stock and Stockholders_

Common Stock and Stockholders’ Equity	3 Months Ended
	Mar. 31, 2023
Equity [Abstract]
Common Stock and Stockholders’ Equity	Common Stock and Stockholders’ EquityEach share of Class A common stock is entitled to one vote per share. Each share of Class B common stock is entitled to ten votes per share and is convertible at any time into one share of Class A common stock. The table below summarizes the Class A common stock and Class B common stock authorized, issued and outstanding as of March 31, 2023 and December 31, 2022: March 31, 2023 Authorized Issued and Outstanding (in thousands) Class A common stock 1,000,000 72,351 Class B common stock 120,000 30,485 Total 1,120,000 102,836 December 31, 2022 Authorized Issued and Outstanding (in thousands) Class A common stock 1,000,000 70,723 Class B common stock 120,000 30,809 Total 1,120,000 101,532 Accumulated Other Comprehensive Loss The following table summarizes changes in accumulated other comprehensive loss by component during the three months ended March 31, 2023 and 2022: Change in Accumulated Other Comprehensive Loss by Component Three Months Ended March 31, March 31, Foreign Currency Translation Adjustments Unrealized Gain (Loss) on Available-For-Sale Securities Total Foreign Currency Translation Adjustments Unrealized Loss on Available-For-Sale Securities Total (in thousands) Beginning balance $ (3,147) $ (1,087) $ (4,234) $ (729) $ (365) $ (1,094) Other comprehensive income (loss) before reclassifications 544 610 1,154 (708) (1,002) (1,710) Amounts reclassified from accumulated other comprehensive loss to income — — — — — — Total other comprehensive income (loss), net of reclassifications 544 610 1,154 (708) (1,002) (1,710) Ending balance $ (2,603) $ (477) $ (3,080) $ (1,437) $ (1,367) $ (2,804)

Stock-Based Compensation

Stock-Based Compensation	3 Months Ended
	Mar. 31, 2023
Share-Based Payment Arrangement [Abstract]
Stock-Based Compensation	Stock-Based Compensation The Company has stock-based compensation plans, which are more fully described in Note 11, Stock-Based Compensation Plans , to the Consolidated Financial Statements included in the 2022 10-K. During the three months ended March 31, 2023, the Company granted restricted stock units subject to service conditions. The following table provides information about stock-based compensation expense by financial statement line item: Three Months Ended March 31, March 31, Operations, product, and technology $ 3,671 $ 1,392 Marketing 1,205 333 Sales, general, and administrative 4,515 1,798 Total stock-based compensation expense $ 9,391 $ 3,523 During the three months ended March 31, 2023, the Company modified the vesting schedule of substantially all restricted stock unit awards outstanding as of December 31, 2022 from 4 years to 3 years and recognized compensation expense of $2.4 million related to the acceleration of the vesting schedule. As of March 31, 2023, the total unrecognized compensation cost related to all nonvested stock options was $3.1 million and the related weighted-average period over which it is expected to be recognized was approximately 1.27 years. As of March 31, 2023, the total unrecognized compensation cost related to all nonvested restricted stock units was $64.0 million and the related weighted-average period over which it is expected to be recognized was approximately 2.36 years. The following table summarizes the activities for all stock options under the Company’s share-based compensation plans for the three months ended March 31, 2023: Number of Options Outstanding Weighted-Average Exercise Price Per Share Weighted-Average Remaining Contractual Life Aggregate Intrinsic Value(1) (in thousands) (in thousands) Outstanding as of December 31, 2022 17,872 $ 1.97 5.20 years $ 1,442 Granted — $ — Exercised (178) $ 1.48 Forfeited or expired (126) $ 3.61 Outstanding as of March 31, 2023 17,568 $ 1.96 4.98 years $ 11,622 Exercisable as of March 31, 2023 14,787 $ 1.91 4.55 years $ 10,351 (1) The intrinsic value is the amount by which the current market value of the underlying stock exceeds the exercise price of the stock awards. There were no options granted during the three months ended March 31, 2023 and 2022. The total intrinsic value of stock options exercised during the three months ended March 31, 2023 and 2022 was $0.1 million and $2.1 million, respectively. The following table summarizes the activities for all restricted stock units under the Company’s share-based compensation plans for the three months ended March 31, 2023: Number of Shares Weighted-Average Grant Date Fair Value Per Share (in thousands) Outstanding and nonvested as of December 31, 2022 7,855 $ 8.01 Granted 8,310 $ 1.78 Vested (1,383) $ 5.79 Forfeited (167) $ 5.70 Outstanding and nonvested as of March 31, 2023 14,615 $ 4.71 The total vesting date fair value of restricted stock units which vested during the three months ended March 31, 2023 and 2022 was $8.0 million and $2.7 million, respectively.

Commitment and Contingencies

Commitment and Contingencies	3 Months Ended
	Mar. 31, 2023
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Commitments and Contingencies Legal Contingencies The Company is subject to litigation claims and assessments from time to time in the ordinary course of business. The Company’s management does not believe that any such matters, individually or in the aggregate, will have a material adverse effect on the Company’s business, financial condition, results of operations or cash flows. Indemnifications In the normal course of business, the Company enters into contracts and agreements that contain a variety of representations and warranties and provide for limited and customary indemnification obligations. The Company’s exposure under these agreements is unknown because it involves claims that may be made against the Company in the future, but that have not yet been made.

Income Taxes

Income Taxes	3 Months Ended
	Mar. 31, 2023
Income Tax Disclosure [Abstract]
Income Taxes	Income TaxesThe quarterly income tax provision reflects an estimate of the corresponding quarter’s state taxes in the United States. The provision for income tax expense for the three months ended March 31, 2023 and 2022 was determined based upon estimates of the Company’s annual effective tax rate for the years ending December 31, 2023 and 2022, respectively. Since the Company is in a full valuation allowance position due to losses incurred since inception, the provision for taxes consists solely of certain state income taxes.

Loss Per Share

Loss Per Share	3 Months Ended
	Mar. 31, 2023
Earnings Per Share [Abstract]
Loss Per Share	Loss Per Share The following participating securities have been excluded from the computation of diluted loss per share for the periods presented because including them would have been anti-dilutive: March 31, March 31, (in thousands) Outstanding stock options 17,569 18,825 Restricted stock units 14,615 1,830 Delayed share issuance related to acquisition 130 130 Employee stock purchase plan 152 105 Total 32,466 20,890

Significant Accounting Polici_2

Significant Accounting Policies (Policies)	3 Months Ended
	Mar. 31, 2023
Accounting Policies [Abstract]
Basis of Presentation	The accompanying unaudited condensed consolidated financial statements include the accounts of the Company and its wholly-owned subsidiaries. All intercompany account balances and transactions have been eliminated upon consolidation. The unaudited condensed consolidated financial statements were prepared in accordance with the United States (“U.S.”) Generally Accepted Accounting Principles (“GAAP”) for interim financial information and with the instructions to Quarterly Report on Form 10‑Q and Article 10 of Regulation S-X. As permitted under those rules, certain footnotes or other financial information can be condensed or omitted.
Use of Estimates	The preparation of consolidated financial statements in accordance with GAAP requires management to make estimates and assumptions that affect the amounts that are reported in the consolidated financial statements and the related disclosures. Actual results could differ from those estimates. Significant items subject to such estimates and assumptions include, but are not limited to, the useful lives of property and equipment and intangibles, allowance for sales returns, breakage on loyalty points and rewards and gift cards, valuation of inventory, stock-based compensation, right-of-use assets, goodwill and acquired intangibles, and income taxes.
Reclassifications	Certain reclassifications were made to the prior period condensed consolidated statement of cash flows to conform to the current period presentation.
Gift Cards and Site Credits	The Company sells thredUP gift cards on its e-commerce website. thredUP gift cards do not expire or lose value over periods of inactivity. The Company accounts for gift cards by recognizing a gift card liability at the time a gift card is delivered to the customer.The Company issues site credits for order refunds. Site credits can be applied toward future charges but may not be converted into cash. Site credits may also be converted to thredUP gift cards after one year at the discretion of the Company. These credits are recognized as revenue when used.
Recently Adopted Accounting Pronouncements	In June 2016, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) No. 2016-13, Financial Instruments — Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments . This ASU changes the impairment model for most financial assets, requiring the use of an expected loss model which requires entities to estimate the lifetime expected credit loss on financial assets measured at amortized cost. Such credit losses will be recorded as an allowance to offset the amortized cost of the financial asset, resulting in a net presentation of the amount expected to be collected on the financial asset. In addition, credit losses relating to available-for-sale debt securities will now be recorded through an allowance for credit losses rather than as a direct write-down to the security. This standard is effective for fiscal years beginning after December 15, 2022, including interim periods within those fiscal years. The adoption of this guidance during the first quarter of 2023 did not have a material impact on the Company’s condensed consolidated financial statements.
Fair Value Measurements	The Company applies the provisions of FASB ASC Topic 820, Fair Value Measurements and Disclosures , for its financial and non-financial assets and liabilities. ASC 820 defines fair value as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. ASC 820 establishes a fair value hierarchy, which prioritizes the inputs used in measuring fair value into three broad levels as follows: • Level 1 inputs are quoted prices (unadjusted) in active markets for identical assets or liabilities that the reporting entity has the ability to access at the measurement date. • Level 2 inputs include quoted prices for similar assets or liabilities in active markets, quoted prices for identical or similar assets or liabilities in markets that are not active, inputs other than quoted prices that are observable for the asset or liability and inputs that are derived principally from or corroborated by observable market data by correlation or other means. • Level 3 inputs are unobservable inputs for the asset or liability. The Company measures certain assets and liabilities at fair value as discussed throughout the notes to its condensed consolidated financial statements. As of March 31, 2023 and December 31, 2022, the carrying amounts of the Company’s accounts receivable, other current assets, other assets, accounts payable, seller payable and accrued and other current liabilities approximated their estimated fair values due to their relatively short maturities. Management believes the terms of its long-term variable-rate debt reflect current market conditions for an instrument with similar terms and maturity, and as such, the carrying value of the Company’s long-term debt approximated its fair value as of March 31, 2023 and December 31, 2022.

Significant Accounting Polici_3

Significant Accounting Policies (Tables)	3 Months Ended
	Mar. 31, 2023
Accounting Policies [Abstract]
Schedule of Cash and Cash Equivalents	The following table provides a reconciliation of cash, cash equivalents and restricted cash reported within the Company’s condensed consolidated balance sheets that sum to the total of the same such amounts shown in the Company’s condensed consolidated statements of cash flows: March 31, December 31, (in thousands) Cash and cash equivalents $ 50,739 $ 38,029 Restricted cash included in Other current assets 475 383 Restricted cash included in Other assets 5,547 5,639 Total cash, cash equivalents, and restricted cash shown in the statement of cash flows $ 56,761 $ 44,051
Restrictions on Cash and Cash Equivalents	The following table provides a reconciliation of cash, cash equivalents and restricted cash reported within the Company’s condensed consolidated balance sheets that sum to the total of the same such amounts shown in the Company’s condensed consolidated statements of cash flows: March 31, December 31, (in thousands) Cash and cash equivalents $ 50,739 $ 38,029 Restricted cash included in Other current assets 475 383 Restricted cash included in Other assets 5,547 5,639 Total cash, cash equivalents, and restricted cash shown in the statement of cash flows $ 56,761 $ 44,051

Financial Instruments and Fai_2

Financial Instruments and Fair Value Measurements (Tables)	3 Months Ended
	Mar. 31, 2023
Fair Value Disclosures [Abstract]
Schedule of Financial Instruments Measured at Fair Value	The following tables provide information about the Company’s financial instruments that are measured at fair value on a recurring basis and indicate the fair value hierarchy of the valuation techniques utilized to determine such values as of March 31, 2023 and December 31, 2022: March 31, 2023 Level 1 Level 2 Level 3 Total (in thousands) Assets: Cash equivalents: Money market funds $ 10,052 $ — $ — $ 10,052 Commercial paper — 21,062 — 21,062 U.S. government agency discount notes 2,992 — — 2,992 Total cash equivalents 13,044 21,062 — 34,106 Marketable securities: Corporate debt securities 13,505 — — 13,505 U.S. treasury securities 12,322 — — 12,322 U.S. government agency bonds 16,906 — — 16,906 Total marketable securities 42,733 — — 42,733 Total assets at fair value $ 55,777 $ 21,062 $ — $ 76,839 December 31, 2022 Level 1 Level 2 Level 3 Total (in thousands) Assets: Cash equivalents: Money market funds $ 1,110 $ — $ — $ 1,110 Commercial paper — 14,460 — 14,460 Total cash equivalents 1,110 14,460 — 15,570 Marketable securities: Corporate debt securities 25,488 — — 25,488 U.S. treasury securities 19,176 — — 19,176 U.S. government agency bonds 22,238 — — 22,238 Total marketable securities 66,902 — — 66,902 Total assets at fair value $ 68,012 $ 14,460 $ — $ 82,472 The following tables summarize the cost, gross unrealized gains, gross unrealized losses and fair value of the marketable securities as of March 31, 2023 and December 31, 2022: March 31, 2023 Cost or Amortized Cost Unrealized Fair Value Gains Losses (in thousands) Corporate debt securities $ 13,568 $ — $ (63) $ 13,505 U.S. treasury securities 12,501 — (179) 12,322 U.S. government agency bonds 17,138 — (232) 16,906 Total $ 43,207 $ — $ (474) $ 42,733 December 31, 2022 Cost or Amortized Cost Unrealized Fair Value Gains Losses (in thousands) Corporate debt securities $ 25,774 $ — $ (286) $ 25,488 U.S. treasury securities 19,531 — (355) 19,176 U.S. government agency bonds 22,679 — (441) 22,238 Total $ 67,984 $ — $ (1,082) $ 66,902

Property and Equipment, Net (Ta

Property and Equipment, Net (Tables)	3 Months Ended
	Mar. 31, 2023
Property, Plant and Equipment [Abstract]
Schedule of Property and Equipment, Net	Property and equipment, net consisted of the following: March 31, December 31, (in thousands) Property and equipment $ 130,819 $ 124,412 Less: accumulated depreciation and amortization (35,013) (31,930) Property and equipment, net $ 95,806 $ 92,482

Goodwill and Other Intangible_2

Goodwill and Other Intangible Assets (Tables)	3 Months Ended
	Mar. 31, 2023
Goodwill and Intangible Assets Disclosure [Abstract]
Schedule of Finite-Lived Intangible Assets	The gross carrying amounts and accumulated amortization of the Company’s intangible assets with determinable lives as of March 31, 2023 and December 31, 2022 were as follows: March 31, 2023 Amortization Period Gross Carrying Amount Accumulated Amortization Net Carrying Amount (in years) (in thousands) Customer relationships 8 $ 4,902 $ (907) $ 3,995 Developed technology 3 4,619 (2,278) 2,341 Trademarks 9 4,436 (728) 3,708 Total $ 13,957 $ (3,913) $ 10,044 December 31, 2022 Amortization Period Gross Carrying Amount Accumulated Amortization Net Carrying Amount (in years) (in thousands) Customer relationships 8 $ 4,814 $ (742) $ 4,072 Developed technology 3 4,536 (1,864) 2,672 Trademarks 9 4,351 (596) 3,755 Total $ 13,701 $ (3,202) $ 10,499

Balance Sheet Components (Table

Balance Sheet Components (Tables)	3 Months Ended
	Mar. 31, 2023
Balance Sheet Related Disclosures [Abstract]
Schedule of Inventory	Inventories consisted of the following: March 31, December 31, (in thousands) Work in process $ 2,432 $ 2,639 Finished goods 18,501 14,880 Total $ 20,933 $ 17,519
Schedule of Other Current Liabilities	Accrued and other current liabilities consisted of the following: March 31, December 31, (in thousands) Gift card and site credit liabilities $ 17,093 $ 18,101 Accrued vendor liabilities 8,936 9,116 Deferred revenue 6,398 7,582 Accrued compensation 4,459 4,993 Allowance for returns 4,779 4,907 Accrued taxes 4,195 4,326 Accrued other 2,116 1,130 Total $ 47,976 $ 50,155

Long-Term Debt (Tables)

Long-Term Debt (Tables)	3 Months Ended
	Mar. 31, 2023
Debt Disclosure [Abstract]
Schedule of Maturities of Long-Term Debt	As of March 31, 2023, annual scheduled principal payments of the Term Loan were as follows: Amount (in thousands) 2023 $ 3,000 2024 4,000 2025 4,000 2026 4,000 2027 14,333 Total principal payments 29,333 Less: unamortized debt discount (620) Less: current portion of long-term debt (3,882) Non-current portion of long-term debt $ 24,831

Common Stock and Stockholders_2

Common Stock and Stockholders’ Equity (Tables)	3 Months Ended
	Mar. 31, 2023
Equity [Abstract]
Schedule of Common Stock Issued and Outstanding	The table below summarizes the Class A common stock and Class B common stock authorized, issued and outstanding as of March 31, 2023 and December 31, 2022: March 31, 2023 Authorized Issued and Outstanding (in thousands) Class A common stock 1,000,000 72,351 Class B common stock 120,000 30,485 Total 1,120,000 102,836 December 31, 2022 Authorized Issued and Outstanding (in thousands) Class A common stock 1,000,000 70,723 Class B common stock 120,000 30,809 Total 1,120,000 101,532
Schedule of Accumulated Other Comprehensive Loss	The following table summarizes changes in accumulated other comprehensive loss by component during the three months ended March 31, 2023 and 2022: Change in Accumulated Other Comprehensive Loss by Component Three Months Ended March 31, March 31, Foreign Currency Translation Adjustments Unrealized Gain (Loss) on Available-For-Sale Securities Total Foreign Currency Translation Adjustments Unrealized Loss on Available-For-Sale Securities Total (in thousands) Beginning balance $ (3,147) $ (1,087) $ (4,234) $ (729) $ (365) $ (1,094) Other comprehensive income (loss) before reclassifications 544 610 1,154 (708) (1,002) (1,710) Amounts reclassified from accumulated other comprehensive loss to income — — — — — — Total other comprehensive income (loss), net of reclassifications 544 610 1,154 (708) (1,002) (1,710) Ending balance $ (2,603) $ (477) $ (3,080) $ (1,437) $ (1,367) $ (2,804)

Stock-Based Compensation (Table

Stock-Based Compensation (Tables)	3 Months Ended
	Mar. 31, 2023
Share-Based Payment Arrangement [Abstract]
Schedule of Stock-Based Compensation Expense	The following table provides information about stock-based compensation expense by financial statement line item: Three Months Ended March 31, March 31, Operations, product, and technology $ 3,671 $ 1,392 Marketing 1,205 333 Sales, general, and administrative 4,515 1,798 Total stock-based compensation expense $ 9,391 $ 3,523
Schedule of Stock Option Activity	The following table summarizes the activities for all stock options under the Company’s share-based compensation plans for the three months ended March 31, 2023: Number of Options Outstanding Weighted-Average Exercise Price Per Share Weighted-Average Remaining Contractual Life Aggregate Intrinsic Value(1) (in thousands) (in thousands) Outstanding as of December 31, 2022 17,872 $ 1.97 5.20 years $ 1,442 Granted — $ — Exercised (178) $ 1.48 Forfeited or expired (126) $ 3.61 Outstanding as of March 31, 2023 17,568 $ 1.96 4.98 years $ 11,622 Exercisable as of March 31, 2023 14,787 $ 1.91 4.55 years $ 10,351 (1) The intrinsic value is the amount by which the current market value of the underlying stock exceeds the exercise price of the stock awards.
Schedule of Restricted Stock Unit Activity	The following table summarizes the activities for all restricted stock units under the Company’s share-based compensation plans for the three months ended March 31, 2023: Number of Shares Weighted-Average Grant Date Fair Value Per Share (in thousands) Outstanding and nonvested as of December 31, 2022 7,855 $ 8.01 Granted 8,310 $ 1.78 Vested (1,383) $ 5.79 Forfeited (167) $ 5.70 Outstanding and nonvested as of March 31, 2023 14,615 $ 4.71

Loss Per Share (Tables)

Loss Per Share (Tables)	3 Months Ended
	Mar. 31, 2023
Earnings Per Share [Abstract]
Schedule of Antidilutive Securities Excluded from Computation of Loss Per Share	The following participating securities have been excluded from the computation of diluted loss per share for the periods presented because including them would have been anti-dilutive: March 31, March 31, (in thousands) Outstanding stock options 17,569 18,825 Restricted stock units 14,615 1,830 Delayed share issuance related to acquisition 130 130 Employee stock purchase plan 152 105 Total 32,466 20,890

Significant Accounting Polici_4

Significant Accounting Policies - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Dec. 31, 2022
Revenue from External Customer [Line Items]
Customer liability	$ 17,093		$ 18,101
Conversion period	1 year
Loyalty Program
Revenue from External Customer [Line Items]
Revenue recognized	$ 2,100	$ 2,700
Loyalty Program | Transferred over Time
Revenue from External Customer [Line Items]
Customer liability	3,300		3,300
Gift Card
Revenue from External Customer [Line Items]
Customer liability	10,800		10,900
Revenue recognized	500	300
Site Credit
Revenue from External Customer [Line Items]
Customer liability	6,300		$ 7,200
Revenue recognized	0	0
Revenue recognized from the redemption	$ 9,400	$ 11,000

Significant Accounting Polici_5

Significant Accounting Policies - Schedule of Cash, Cash Equivalents and Restricted Cash (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022	Mar. 31, 2022	Dec. 31, 2021
Accounting Policies [Abstract]
Cash and cash equivalents	$ 50,739	$ 38,029
Restricted cash included in Other current assets	475	383
Restricted cash included in Other assets	5,547	5,639
Total cash, cash equivalents, and restricted cash shown in the statement of cash flows	$ 56,761	$ 44,051	$ 75,886	$ 91,840

Financial Instruments and Fai_3

Financial Instruments and Fair Value Measurements – Schedule of Financial Instruments Measured at Fair Value (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Marketable securities:
Total marketable securities	$ 42,733	$ 66,902
Fair Value, Recurring
Cash equivalents:
Total cash equivalents	34,106	15,570
Marketable securities:
Total marketable securities	42,733	66,902
Total assets at fair value	76,839	82,472
Fair Value, Recurring | Corporate debt securities
Marketable securities:
Total marketable securities	13,505	25,488
Fair Value, Recurring | U.S. treasury securities
Marketable securities:
Total marketable securities	12,322	19,176
Fair Value, Recurring | U.S. government agency bonds
Marketable securities:
Total marketable securities	16,906	22,238
Fair Value, Recurring | Money market funds
Cash equivalents:
Total cash equivalents	10,052	1,110
Fair Value, Recurring | Commercial paper
Cash equivalents:
Total cash equivalents	21,062	14,460
Fair Value, Recurring | U.S. government agency discount notes
Cash equivalents:
Total cash equivalents	2,992
Level 1 | Fair Value, Recurring
Cash equivalents:
Total cash equivalents	13,044	1,110
Marketable securities:
Total marketable securities	42,733	66,902
Total assets at fair value	55,777	68,012
Level 1 | Fair Value, Recurring | Corporate debt securities
Marketable securities:
Total marketable securities	13,505	25,488
Level 1 | Fair Value, Recurring | U.S. treasury securities
Marketable securities:
Total marketable securities	12,322	19,176
Level 1 | Fair Value, Recurring | U.S. government agency bonds
Marketable securities:
Total marketable securities	16,906	22,238
Level 1 | Fair Value, Recurring | Money market funds
Cash equivalents:
Total cash equivalents	10,052	1,110
Level 1 | Fair Value, Recurring | Commercial paper
Cash equivalents:
Total cash equivalents	0	0
Level 1 | Fair Value, Recurring | U.S. government agency discount notes
Cash equivalents:
Total cash equivalents	2,992
Level 2 | Fair Value, Recurring
Cash equivalents:
Total cash equivalents	21,062	14,460
Marketable securities:
Total marketable securities	0	0
Total assets at fair value	21,062	14,460
Level 2 | Fair Value, Recurring | Corporate debt securities
Marketable securities:
Total marketable securities	0	0
Level 2 | Fair Value, Recurring | U.S. treasury securities
Marketable securities:
Total marketable securities	0	0
Level 2 | Fair Value, Recurring | U.S. government agency bonds
Marketable securities:
Total marketable securities	0	0
Level 2 | Fair Value, Recurring | Money market funds
Cash equivalents:
Total cash equivalents	0	0
Level 2 | Fair Value, Recurring | Commercial paper
Cash equivalents:
Total cash equivalents	21,062	14,460
Level 2 | Fair Value, Recurring | U.S. government agency discount notes
Cash equivalents:
Total cash equivalents	0
Level 3 | Fair Value, Recurring
Cash equivalents:
Total cash equivalents	0	0
Marketable securities:
Total marketable securities	0	0
Total assets at fair value	0	0
Level 3 | Fair Value, Recurring | Corporate debt securities
Marketable securities:
Total marketable securities	0	0
Level 3 | Fair Value, Recurring | U.S. treasury securities
Marketable securities:
Total marketable securities	0	0
Level 3 | Fair Value, Recurring | U.S. government agency bonds
Marketable securities:
Total marketable securities	0	0
Level 3 | Fair Value, Recurring | Money market funds
Cash equivalents:
Total cash equivalents	0	0
Level 3 | Fair Value, Recurring | Commercial paper
Cash equivalents:
Total cash equivalents	0	$ 0
Level 3 | Fair Value, Recurring | U.S. government agency discount notes
Cash equivalents:
Total cash equivalents	$ 0

Financial Instruments and Fai_4

Financial Instruments and Fair Value Measurements - Amortized Cost, Unrealized Gain (Loss), and Fair Value (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Marketable securities:
Cost or Amortized Cost	$ 43,207	$ 67,984
Unrealized Gains	0	0
Unrealized Losses	(474)	(1,082)
Fair Value	42,733	66,902
Corporate debt securities
Marketable securities:
Cost or Amortized Cost	13,568	25,774
Unrealized Gains	0	0
Unrealized Losses	(63)	(286)
Fair Value	13,505	25,488
U.S. treasury securities
Marketable securities:
Cost or Amortized Cost	12,501	19,531
Unrealized Gains	0	0
Unrealized Losses	(179)	(355)
Fair Value	12,322	19,176
U.S. government agency bonds
Marketable securities:
Cost or Amortized Cost	17,138	22,679
Unrealized Gains	0	0
Unrealized Losses	(232)	(441)
Fair Value	$ 16,906	$ 22,238

Financial Instruments and Fai_5

Financial Instruments and Fair Value Measurements - Narrative (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities	$ 42,733	$ 66,902
Fair Value, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities	$ 42,733	$ 66,902

Property and Equipment, Net - S

Property and Equipment, Net - Schedule of Property and Equipment, Net (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Property, Plant and Equipment [Abstract]
Property and equipment	$ 130,819	$ 124,412
Less: accumulated depreciation and amortization	(35,013)	(31,930)
Property and equipment, net	$ 95,806	$ 92,482

Property and Equipment, Net - N

Property and Equipment, Net - Narrative (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Property, Plant and Equipment [Abstract]
Depreciation	$ 3	$ 2.6

Goodwill and Other Intangible_3

Goodwill and Other Intangible Assets - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Dec. 31, 2022
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill	$ 11,805		$ 11,592
Amortization expense	$ 600	$ 700

Goodwill and Other Intangible_4

Goodwill and Other Intangible Assets - Schedule of Finite-Lived Intangible Assets (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2023	Dec. 31, 2022
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 13,957	$ 13,701
Accumulated Amortization	(3,913)	(3,202)
Net Carrying Amount	$ 10,044	$ 10,499
Customer relationships
Finite-Lived Intangible Assets [Line Items]
Amortization Period	8 years	8 years
Gross Carrying Amount	$ 4,902	$ 4,814
Accumulated Amortization	(907)	(742)
Net Carrying Amount	$ 3,995	$ 4,072
Developed technology
Finite-Lived Intangible Assets [Line Items]
Amortization Period	3 years	3 years
Gross Carrying Amount	$ 4,619	$ 4,536
Accumulated Amortization	(2,278)	(1,864)
Net Carrying Amount	$ 2,341	$ 2,672
Trademarks
Finite-Lived Intangible Assets [Line Items]
Amortization Period	9 years	9 years
Gross Carrying Amount	$ 4,436	$ 4,351
Accumulated Amortization	(728)	(596)
Net Carrying Amount	$ 3,708	$ 3,755

Balance Sheet Components - Sche

Balance Sheet Components - Schedule of Inventory (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Balance Sheet Related Disclosures [Abstract]
Work in process	$ 2,432	$ 2,639
Finished goods	18,501	14,880
Inventory	$ 20,933	$ 17,519

Balance Sheet Components - Sc_2

Balance Sheet Components - Schedule of Other Current Liabilities (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Balance Sheet Related Disclosures [Abstract]
Gift card and site credit liabilities	$ 17,093	$ 18,101
Accrued vendor liabilities	8,936	9,116
Deferred revenue	6,398	7,582
Accrued compensation	4,459	4,993
Allowance for returns	4,779	4,907
Accrued taxes	4,195	4,326
Accrued other	2,116	1,130
Total	$ 47,976	$ 50,155

Long-Term Debt - Narrative (Det

Long-Term Debt - Narrative (Details) - USD ($) $ in Thousands		3 Months Ended
	Jul. 14, 2022	Mar. 31, 2023	Mar. 31, 2022	Dec. 31, 2022	Jul. 31, 2022	Feb. 28, 2019	Feb. 01, 2019
Debt Instrument [Line Items]
Repayment of debt		$ 1,000	$ 2,000
Medium-term Notes
Debt Instrument [Line Items]
Maximum borrowing capacity	$ 70,000
Debt issuance costs					$ 0
Term Loan | Medium-term Notes
Debt Instrument [Line Items]
Maximum borrowing capacity							$ 40,000
Debt issuance costs						$ 0
Debt instrument, floor percentage	6%
Effective interest rate		10.22%		9.70%
Repayment of debt		$ 1,000	2,000
Principal outstanding		29,300		$ 30,300
Interest costs incurred relating to the Term Loan		700	600
Interest costs capitalized as part of an asset		$ 600	$ 100
Term Loan | Medium-term Notes | Prime Rate
Debt Instrument [Line Items]
Variable interest rate	1.25%

Long-Term Debt - Schedule of Ma

Long-Term Debt - Schedule of Maturities of Debt (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Debt Disclosure [Abstract]
2023	$ 3,000
2024	4,000
2025	4,000
2026	4,000
2027	14,333
Total principal payments	29,333
Less: unamortized debt discount	(620)
Less: current portion of long-term debt	(3,882)	$ (3,879)
Long-term debt, net of current portion	$ 24,831	$ 25,788

Common Stock and Stockholders_3

Common Stock and Stockholders’ Equity - Narrative (Details)	3 Months Ended
	Mar. 31, 2023 vote shares
Class of Stock [Line Items]
Conversion of stock (in shares) | shares	1
Class A common stock
Class of Stock [Line Items]
Number of votes for each share	1
Class B common stock
Class of Stock [Line Items]
Number of votes for each share	10

Common Stock and Stockholders_4

Common Stock and Stockholders’ Equity - Schedule of Common Stock Issued and Outstanding (Details) - shares	Mar. 31, 2023	Dec. 31, 2022
Class of Stock [Line Items]
Authorized (in shares)	1,120,000,000	1,120,000,000
Issued (in shares)	102,836,000	101,532,000
Outstanding (in shares)	102,836,000	101,532,000
Class A common stock
Class of Stock [Line Items]
Authorized (in shares)	1,000,000,000	1,000,000,000
Issued (in shares)	72,351,000	70,723,000
Outstanding (in shares)	72,351,000	70,723,000
Class B common stock
Class of Stock [Line Items]
Authorized (in shares)	120,000,000	120,000,000
Issued (in shares)	30,485,000	30,809,000
Outstanding (in shares)	30,485,000	30,809,000

Common Stock and Stockholders_5

Common Stock and Stockholders’ Equity - Schedule of Accumulated Other Comprehensive Loss (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	$ 140,001	$ 205,734
Other comprehensive income (loss) before reclassifications	1,154	(1,710)
Amounts reclassified from accumulated other comprehensive loss to income	0	0
Total other comprehensive income (loss)	1,154	(1,710)
Ending balance	131,087	187,688
Accumulated Other Comprehensive Loss
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(4,234)	(1,094)
Total other comprehensive income (loss)	1,154	(1,710)
Ending balance	(3,080)	(2,804)
Foreign Currency Translation Adjustments
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(3,147)	(729)
Other comprehensive income (loss) before reclassifications	544	(708)
Amounts reclassified from accumulated other comprehensive loss to income	0	0
Total other comprehensive income (loss)	544	(708)
Ending balance	(2,603)	(1,437)
Unrealized Gain (Loss) on Available-For-Sale Securities
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(1,087)	(365)
Other comprehensive income (loss) before reclassifications	610	(1,002)
Amounts reclassified from accumulated other comprehensive loss to income	0	0
Total other comprehensive income (loss)	610	(1,002)
Ending balance	$ (477)	$ (1,367)

Stock-Based Compensation - Sche

Stock-Based Compensation - Schedule of Stock-Based Compensation Expense (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Total stock-based compensation expense	$ 9,391	$ 3,523
Operations, product, and technology
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Total stock-based compensation expense	3,671	1,392
Marketing
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Total stock-based compensation expense	1,205	333
Sales, general, and administrative
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Total stock-based compensation expense	$ 4,515	$ 1,798

Stock-Based Compensation - Narr

Stock-Based Compensation - Narrative (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Stock-based compensation vesting expense	$ 9,391	$ 3,523
Stock options
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Unrecognized compensation expense	$ 3,100
Weighted average period unrecognized stock-based compensation expense	1 year 3 months 7 days
Options granted (in dollars per share)	$ 0
Total intrinsic value of stock options exercised	$ 100	2,100
Restricted stock units
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Stock-based compensation vesting expense	2,400
Unrecognized compensation expense	$ 64,000
Weighted average period unrecognized stock-based compensation expense	2 years 4 months 9 days
Stock-based compensation vesting expense	$ 8,000	$ 2,700
Restricted stock units | Maximum
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Award vesting period (in years)	3 years
Restricted stock units | Minimum
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Award vesting period (in years)	4 years

Stock-Based Compensation - Sc_2

Stock-Based Compensation - Schedule of Stock Option Activity (Details) - Stock options - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2023	Dec. 31, 2022
Number of Options Outstanding
Options outstanding, beginning balance (in shares)	17,872,000
Options granted (in shares)	0
Options exercised (in shares)	(178,000)
Options forfeited and expired (in shares)	(126,000)
Options outstanding, ending balance (in shares)	17,568,000	17,872,000
Options exercisable (in shares)	14,787,000
Weighted-Average Exercise Price Per Share
Beginning balance (in dollars per share)	$ 1.97
Options granted (in dollars per share)	0
Options exercised (in dollars per share)	1.48
Options forfeited or expired (in dollars per share)	3.61
Ending balance (in dollars per share)	1.96	$ 1.97
Options exercisable (in dollars per share)	$ 1.91
Weighted-Average Remaining Contractual Life
Options outstanding	4 years 11 months 23 days	5 years 2 months 12 days
Options exercisable	4 years 6 months 18 days
Aggregate Intrinsic Value
Options outstanding	$ 11,622	$ 1,442
Options exercisable	$ 10,351

Stock-Based Compensation - Sc_3

Stock-Based Compensation - Schedule of RSU Activity (Details) - Restricted stock units shares in Thousands	3 Months Ended
	Mar. 31, 2023 $ / shares shares
Number of Shares
Outstanding at beginning of period (in shares) | shares	7,855
Granted (in shares) | shares	8,310
Vested (in shares) | shares	(1,383)
Forfeited (in shares) | shares	(167)
Outstanding at end of period (in shares) | shares	14,615
Weighted-Average Grant Date Fair Value Per Share
Outstanding at beginning of period (in dollars per share) | $ / shares	$ 8.01
Granted (in dollars per share) | $ / shares	1.78
Vested (in dollars per share) | $ / shares	5.79
Forfeited (in dollars per share) | $ / shares	5.70
Outstanding at end of period (in dollars per share) | $ / shares	$ 4.71

Loss Per Share (Details)

Loss Per Share (Details) - shares shares in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Total (in shares)	32,466	20,890
Outstanding stock options
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Total (in shares)	17,569	18,825
Restricted stock units
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Total (in shares)	14,615	1,830
Delayed share issuance related to acquisition
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Total (in shares)	130	130
Employee stock purchase plan
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Total (in shares)	152	105