Clear Secure (YOU) 10-Q 15 Nov 21 2021 Q3 Quarterly report Financial data

Cover

Cover - shares	9 Months Ended
	Sep. 30, 2021	Nov. 11, 2021
Document Information [Line Items]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Sep. 30, 2021
Document Transition Report	false
Entity File Number	001-40568
Entity Registrant Name	CLEAR SECURE, INC.
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	86-2643981
Entity Address, Address Line One	65 East 55th Street
Entity Address, Address Line Two	17th Floor
Entity Address, City or Town	New York
Entity Address, State or Province	NY
Entity Address, Postal Zip Code	10022
City Area Code	646
Local Phone Number	723-1404
Title of 12(b) Security	Class A common stock, par value $0.00001 per share
Trading Symbol	YOU
Security Exchange Name	NYSE
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Non-accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	true
Entity Ex Transition Period	false
Entity Shell Company	false
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2021
Document Fiscal Period Focus	Q3
Entity Central Index Key	0001856314
Amendment Flag	false
Class A common stock par value $0.00001 per share
Document Information [Line Items]
Entity Common Stock, Shares Outstanding		74,268,466
Class B common stock par value $0.00001 per share
Document Information [Line Items]
Entity Common Stock, Shares Outstanding		1,042,234
Class C common stock par value $0.00001 per share
Document Information [Line Items]
Entity Common Stock, Shares Outstanding		44,598,167
Class D common stock par value $0.00001 per share
Document Information [Line Items]
Entity Common Stock, Shares Outstanding		26,709,821

Condensed Consolidated Balance

Condensed Consolidated Balance Sheets (Unaudited) - USD ($)	Sep. 30, 2021	Dec. 31, 2020
Current assets:
Cash and cash equivalents	$ 337,791,000	$ 116,226,000
Accounts receivable	3,921,000	912,000
Marketable debt securities	335,457,000	37,813,000
Prepaid revenue share fee	8,921,000	5,475,000
Prepaid expenses and other current assets	14,465,000	11,210,000
Total current assets	700,555,000	171,636,000
Property and equipment, net	45,875,000	35,241,000
Intangible assets, net	2,267,000	1,564,000
Restricted cash	22,835,000	22,856,000
Other assets	1,694,000	971,000
Total assets	773,226,000	232,268,000
Current liabilities:
Accounts payable	10,034,000	8,518,000
Accrued liabilities	45,194,000	18,304,000
Warrant liabilities	0	17,740,000
Deferred revenue	159,589,000	101,542,000
Total current liabilities	214,817,000	146,104,000
Deferred rent	3,428,000	3,809,000
Total liabilities	218,245,000	149,913,000
Commitments and contingencies (Note 17)
Redeemable capital units	0	569,251,000
Profit Units		7,846,000
Accumulated other comprehensive income	(48,000)	27,000
Treasury stock at cost, 72,401 shares as of September 30, 2021	0
Accumulated deficit	(18,976,000)	(494,769,000)
Additional paid-in capital	305,307,000
Total stockholders’ equity attributable to Clear Secure, Inc.	286,284,000
Non-controlling interest	268,697,000
Total stockholders’ equity	554,981,000
Total stockholders’ equity		(486,896,000)
Total liabilities, redeemable capital units and stockholders’ equity	773,226,000	$ 232,268,000
Class A common stock par value $0.00001 per share
Current liabilities:
Common stock	$ 1,000
Shares outstanding (in shares)	74,347,905
Class B common stock par value $0.00001 per share
Current liabilities:
Common stock	$ 0
Shares outstanding (in shares)	1,042,234
Class C common stock par value $0.00001 per share
Current liabilities:
Common stock	$ 0
Shares outstanding (in shares)	44,598,167
Class D common stock par value $0.00001 per share
Current liabilities:
Common stock	$ 0
Shares outstanding (in shares)	26,709,821

Condensed Consolidated Balanc_2

Condensed Consolidated Balance Sheets (Unaudited) (Parenthetical)	Sep. 30, 2021$ / sharesshares
Treasury stock (in shares)	72,401
Class A common stock par value $0.00001 per share
Par value (in USD per share) | $ / shares	$ 0.00001
Shares authorized (in shares)	1,000,000,000
Shares issued (in shares)	74,420,306
Shares outstanding (in shares)	74,347,905
Class B common stock par value $0.00001 per share
Par value (in USD per share) | $ / shares	$ 0.00001
Shares authorized (in shares)	100,000,000
Shares issued (in shares)	1,042,234
Shares outstanding (in shares)	1,042,234
Class C common stock par value $0.00001 per share
Par value (in USD per share) | $ / shares	$ 0.00001
Shares authorized (in shares)	200,000,000
Shares issued (in shares)	44,598,167
Shares outstanding (in shares)	44,598,167
Class D common stock par value $0.00001 per share
Par value (in USD per share) | $ / shares	$ 0.00001
Shares authorized (in shares)	100,000,000
Shares issued (in shares)	26,709,821
Shares outstanding (in shares)	26,709,821

Condensed Consolidated Statemen

Condensed Consolidated Statements of Operations (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Revenue	$ 67,558	$ 56,375	$ 173,294	$ 177,641
Operating expenses:
Cost of revenue share fee	9,926	8,298	25,995	25,707
Cost of direct salaries and benefits	18,128	7,751	46,113	31,504
Research and development	13,347	6,297	33,293	23,358
Sales and marketing	9,949	3,291	25,806	11,479
General and administrative	44,816	17,734	116,290	97,532
Depreciation and amortization	3,988	2,322	9,190	6,945
Operating income (loss)	(32,596)	10,682	(83,393)	(18,884)
Other income (expense)
Interest income (expense), net	(120)	(12)	(333)	657
Other income (expense), net	(11)	477	(11)	477
Income (loss) before tax	(32,727)	11,147	(83,737)	(17,750)
Income tax expense	(60)	(4)	(277)	(14)
Net income (loss)	(32,787)	$ 11,143	(84,014)	$ (17,764)
Less: net income (loss) attributable to non-controlling interests	(15,872)		(65,095)
Net loss attributable to Clear Secure, Inc.	$ (16,915)		$ (18,919)
Common Class A
Net loss per common share, basic:
Basic (in USD per share)	$ (0.23)		$ (0.26)
Diluted (in USD per share)	$ (0.23)		$ (0.26)
Weighted- average shares outstanding
Basic (in shares)	72,285,100		72,124,741
Diluted (in shares)	72,285,100		72,124,741
Common Class B
Net loss per common share, basic:
Basic (in USD per share)	$ (0.23)		$ (0.26)
Diluted (in USD per share)	$ (0.23)		$ (0.26)
Weighted- average shares outstanding
Basic (in shares)	1,042,234		1,042,234
Diluted (in shares)	1,042,234		1,042,234

Condensed Consolidated Statem_2

Condensed Consolidated Statements of Comprehensive Income/(Loss) (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ (32,787)	$ 11,143	$ (84,014)	$ (17,764)
Other comprehensive income
Currency translation	15	0	18	0
Unrealized gain (loss) on fair value of marketable debt securities	(108)	(32)	(80)	32
Total other comprehensive income	(93)	(32)	(62)	32
Comprehensive income (loss)	(32,880)	$ 11,111	(84,076)	$ (17,732)
Less: net income (loss) attributable to non-controlling interests	(15,917)		(65,109)
Net loss attributable to Clear Secure, Inc.	$ (16,963)		$ (18,967)

Condensed Consolidated Statem_3

Condensed Consolidated Statements of Changes in Redeemable Capital Units, Stockholders' Equity, and Members' Deficit (Unaudited) - USD ($)	Total	Class A Redeemable Units	Class B Redeemable Units	Capital Units	Profit Units	Common StockCommon Class A	Common StockCommon Class B	Common StockCommon Class C	Common StockCommon Class D	Additional paid in capital	Profit Units	Profit UnitsProfit Units	Accumulated other comprehensive income	Treasury Stock	Accumulated deficit	Accumulated deficitCapital Units	Accumulated deficitProfit Units	Total stockholders’ equity attributable to Clear Secure, Inc.	Total stockholders’ equity attributable to Clear Secure, Inc.Capital Units	Total stockholders’ equity attributable to Clear Secure, Inc.Profit Units	Non-Controlling Interest
Increase (Decrease) in Temporary Equity [Roll Forward]
Beginning balance (in shares)		316,785	4,759,569
Beginning balance at Dec. 31, 2019		$ 3,168,000	$ 432,062,000
Increase (Decrease) in Temporary Equity [Roll Forward]
Temporary equity issuance (in shares)			422,039
Temporary equity issuance			$ 113,944,000
Temporary equity repurchased and retired (in shares)		(54,843)	(677,387)
Temporary equity repurchased and retired		$ (548,000)	$ (14,053,000)
Warrant expense			1,441,000
Ending balance at Mar. 31, 2020		$ 2,620,000	$ 533,394,000
Ending balance (in shares) at Mar. 31, 2020		261,942	4,504,221
Beginning balance (in shares) at Dec. 31, 2019											2,113,008
Beginning balance at Dec. 31, 2019	$ (283,329,000)										$ 8,022,000		$ 3,000		$ (291,354,000)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	(51,253,000)														(51,253,000)
Other comprehensive income (loss)	(64,000)												(64,000)
Repurchased and retirement of equity				$ (183,102,000)	$ (12,459,000)							$ (1,630,000)				$ (183,102,000)	$ (10,829,000)
Repurchased and retirement of equity (in shares)												(328,834)
Equity-based compensation expense, net of forfeitures	351,000										$ 351,000
Issuance of stock, net of costs (in shares)											37,700
Ending balance (in shares) at Mar. 31, 2020											1,821,874
Ending balance at Mar. 31, 2020	(529,856,000)										$ 6,743,000		(61,000)		(536,538,000)
Beginning balance at Dec. 31, 2019		$ 3,168,000	$ 432,062,000
Increase (Decrease) in Temporary Equity [Roll Forward]
Temporary equity issuance (in shares)			422,039
Temporary equity issuance			$ 113,944,000
Ending balance at Sep. 30, 2020		$ 2,620,000	$ 533,678,000
Ending balance (in shares) at Sep. 30, 2020		261,942	4,504,221
Beginning balance (in shares) at Dec. 31, 2019											2,113,008
Beginning balance at Dec. 31, 2019	(283,329,000)										$ 8,022,000		3,000		(291,354,000)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	(17,764,000)
Other comprehensive income (loss)	32,000
Ending balance (in shares) at Sep. 30, 2020											1,876,327
Ending balance at Sep. 30, 2020	(495,707,000)										$ 7,453,000		35,000		(503,195,000)
Increase (Decrease) in Temporary Equity [Roll Forward]
Beginning balance (in shares)		261,942	4,504,221
Beginning balance at Mar. 31, 2020		$ 2,620,000	$ 533,394,000
Increase (Decrease) in Temporary Equity [Roll Forward]
Warrant expense			141,000
Ending balance at Jun. 30, 2020		$ 2,620,000	$ 533,535,000
Ending balance (in shares) at Jun. 30, 2020		261,942	4,504,221
Beginning balance (in shares) at Mar. 31, 2020											1,821,874
Beginning balance at Mar. 31, 2020	(529,856,000)										$ 6,743,000		(61,000)		(536,538,000)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	22,346,000														22,346,000
Other comprehensive income (loss)	128,000												128,000
Repurchased and retirement of equity					(126,000)							$ (3,000)					(123,000)
Repurchased and retirement of equity (in shares)												(57,050)
Equity-based compensation expense, net of forfeitures	328,000										$ 328,000
Ending balance (in shares) at Jun. 30, 2020											1,764,824
Ending balance at Jun. 30, 2020	(507,180,000)										$ 7,068,000		67,000		(514,315,000)
Increase (Decrease) in Temporary Equity [Roll Forward]
Beginning balance (in shares)		261,942	4,504,221
Warrant expense			$ 143,000
Ending balance at Sep. 30, 2020		$ 2,620,000	$ 533,678,000
Ending balance (in shares) at Sep. 30, 2020		261,942	4,504,221
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	11,143,000														11,143,000
Other comprehensive income (loss)	(32,000)												(32,000)
Repurchased and retirement of equity					$ (23,000)												(23,000)
Repurchased and retirement of equity (in shares)												(19,125)
Equity-based compensation expense, net of forfeitures	385,000										$ 385,000
Issuance of stock, net of costs (in shares)											130,628
Ending balance (in shares) at Sep. 30, 2020											1,876,327
Ending balance at Sep. 30, 2020	(495,707,000)										$ 7,453,000		35,000		(503,195,000)
Increase (Decrease) in Temporary Equity [Roll Forward]
Beginning balance (in shares)		261,942	4,504,221
Beginning balance (in shares)		261,942	4,621,459
Beginning balance at Dec. 31, 2020	569,251,000	$ 2,620,000	$ 566,631,000
Increase (Decrease) in Temporary Equity [Roll Forward]
Temporary equity issuance	81,567,000
Temporary equity repurchased and retired				(439,000)
Warrant expense	281,000
Ending balance at Mar. 31, 2021	650,660,000
Beginning balance (in shares) at Dec. 31, 2020					1,868,322						1,868,322
Beginning balance at Dec. 31, 2020	(486,896,000)										$ 7,846,000		27,000	$ 0	(494,769,000)			$ (486,896,000)			$ 0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	(13,128,000)														(13,128,000)			(13,128,000)
Other comprehensive income (loss)	25,000												25,000					25,000
Repurchased and retirement of equity				$ (3,005,000)	$ (8,302,000)							$ (56,000)				$ (3,005,000)	$ (8,246,000)		$ (3,005,000)	$ (8,302,000)
Repurchased and retirement of equity (in shares)												(71,247)
Equity-based compensation expense, net of forfeitures	327,000										$ 327,000							327,000
Ending balance (in shares) at Mar. 31, 2021											1,797,075
Ending balance at Mar. 31, 2021	(510,979,000)										$ 8,117,000		52,000	0	(519,148,000)			(510,979,000)			0
Beginning balance at Dec. 31, 2020	569,251,000	2,620,000	566,631,000
Ending balance at Sep. 30, 2021	0	0	0
Beginning balance (in shares) at Dec. 31, 2020					1,868,322						1,868,322
Beginning balance at Dec. 31, 2020	(486,896,000)										$ 7,846,000		27,000	0	(494,769,000)			(486,896,000)			0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	(84,014,000)
Other comprehensive income (loss)	(62,000)
Ending balance (in shares) at Sep. 30, 2021						74,420,306	1,042,234	44,598,167	26,709,821
Ending balance at Sep. 30, 2021	554,981,000					$ 1,000				$ 305,307,000			(48,000)	0	(18,976,000)			286,284,000			268,697,000
Beginning balance at Mar. 31, 2021	650,660,000
Increase (Decrease) in Temporary Equity [Roll Forward]
Warrant expense	819,000
Exercise of warrants prior to the reorganization transaction	34,224,000
Effect of reorganization transaction	(685,703,000)
Ending balance at Jun. 30, 2021	0
Beginning balance (in shares) at Mar. 31, 2021											1,797,075
Beginning balance at Mar. 31, 2021	(510,979,000)										$ 8,117,000		52,000	0	(519,148,000)			(510,979,000)			0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Other comprehensive income (loss)	6,000																				6,000
Equity-based compensation expense, net of forfeitures	4,253,000									1,786,000	$ 353,000							2,139,000			2,114,000
Equity-based compensation expense, net of forfeitures (in shares)											(26,925)
Tax distribution to members	(4,018,000)														(4,018,000)			(4,018,000)
Effect of reorganization transaction (in shares)						59,240,306	1,042,234				(1,770,150)
Effect of reorganization transaction	685,703,000					$ 1,000				62,858,000	$ (8,470,000)		(52,000)		556,886,000			611,223,000			74,480,000
Issuance of stock, net of costs (in shares)								44,598,167	26,709,821
Ending balance (in shares) at Jun. 30, 2021						59,240,306	1,042,234	44,598,167	26,709,821
Ending balance (in shares) at Jun. 30, 2021											0
Ending balance at Jun. 30, 2021											$ 0
Ending balance at Jun. 30, 2021	136,866,000					$ 1,000				64,644,000			0	0	(2,004,000)			62,641,000			74,225,000
Ending balance at Sep. 30, 2021	0	$ 0	$ 0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	(32,787,000)														(16,915,000)			(16,915,000)			(15,872,000)
Other comprehensive income (loss)	(93,000)												(48,000)					(48,000)			(45,000)
Equity-based compensation expense, net of forfeitures	12,629,000									6,569,000								6,569,000			6,060,000
Warrant expense	1,509,000									778,000								778,000			731,000
Tax distribution to members	(111,000)														(57,000)			(57,000)			(54,000)
Issuance of stock, net of costs (in shares)						15,180,000
Issuance of stock, net of costs	436,968,000									233,316,000								233,316,000			203,652,000
Ending balance (in shares) at Sep. 30, 2021						74,420,306	1,042,234	44,598,167	26,709,821
Ending balance at Sep. 30, 2021	$ 554,981,000					$ 1,000				$ 305,307,000			$ (48,000)	$ 0	$ (18,976,000)			$ 286,284,000			$ 268,697,000

Condensed Consolidated Statem_4

Condensed Consolidated Statements Of Changes In Cash Flows (Unaudited) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020
Cash flows provided by (used in) operating activities:
Net income (loss)	$ (84,014)	$ (17,764)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization	9,190	6,945
Loss on asset disposal	0	2
Equity-based compensation	20,642	2,789
Warrant liabilities	12,796	444
Amortization of revolver loan costs	558	0
Changes in operating assets and liabilities:
Accounts receivable	(3,009)	733
Prepaid expenses and other assets	(3,818)	3,323
Prepaid revenue share fee	(3,445)	2,595
Accounts payable	2,796	(1,572)
Accrued liabilities	28,615	(4,998)
Deferred revenue	58,047	(21,653)
Deferred rent	(381)	685
Net cash used provided by (used in) operating activities	37,977	(28,471)
Cash flows used in investing activities:
Purchases of marketable debt securities	(689,789)	(104,249)
Sales of marketable debt securities	392,066	99,898
Issuance of loan	0	(250)
Purchases of property and equipment	(22,042)	(9,181)
Capitalized intangible assets	(713)	(425)
Net cash used in investing activities	(320,478)	(14,207)
Cash flows provided by (used in) financing activities:
IPO proceeds, net of underwriter fees and issuance costs	437,494	0
Repurchase of members’ equity	(11,744)	(210,310)
Proceeds from issuance of members’ equity, net of cost	80,277	113,944
Distribution to post-reorganization members	(4,128)	0
Issuance of warrants	289	0
Proceeds from the exercise of warrants	2,575	0
Payment of revolver loan costs	(718)	(652)
Net cash provided by (used in) financing activities	504,045	(97,018)
Net increase (decrease) in cash, cash equivalents, and restricted cash	221,544	(139,696)
Cash, cash equivalents, and restricted cash, beginning of period	139,082	236,051
Cash, cash equivalents, and restricted cash, end of period	$ 360,626	$ 96,355

Condensed Consolidated Statem_5

Condensed Consolidated Statements Of Changes In Cash Flows (Unaudited) (Parenthetical) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020
Statement of Cash Flows [Abstract]
Cash and cash equivalents	$ 337,791	$ 73,602
Restricted cash	22,835	22,753
Total cash, cash equivalents, and restricted cash	360,626	96,355
Purchase of fixed assets with accounts payable	890	1,485
Purchase of fixed assets with accrued liabilities	727	$ 630
Issuance of member units	30,825
Issuance costs in accounts payable and accrued liabilities	$ 526

Description of Business and Rec

Description of Business and Recent Accounting Developments	9 Months Ended
	Sep. 30, 2021
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Description of Business and Recent Accounting Developments	Description of Business and Recent Accounting Developments Description and Organization Clear Secure, Inc. (the “Company”) was incorporated as a Delaware corporation on March 2, 2021 for the purpose of facilitating an initial public offering (“IPO”) and other related transactions in order to carry on the business of Alclear Holdings, LLC and its wholly owned subsidiaries (collectively referred to as “Alclear”). The Company (together with its consolidated subsidiaries, “CLEAR”, “we”, “us”, “our”) is a holding company and its principal asset is the controlling equity interest in Alclear. Alclear was formed as a Delaware limited liability company on January 21, 2010 and operates under the terms of the Amended and Restated Operating Agreement dated June 29, 2021 (the “Operating Agreement”). As the sole managing member of Alclear, the Company operates and controls all of the business and affairs of Alclear, and through Alclear and its subsidiaries, conducts the Company’s business. The Company operates a secure identity platform operating under the brand name CLEAR in the United States. CLEAR’s current offerings include: CLEAR Plus, a consumer aviation subscription service which enables access to predictable and fast experiences through dedicated entry lanes in airport security checkpoints nationwide, the flagship CLEAR App, including Home to Gate and Health Pass, and CLEAR Pass for U.S. Customs and Border Protection ("CBP") Mobile Passport Control, a free to use mobile app, that streamlines entry into the United States. Reorganization and Initial Public Offering On June 29, 2021, prior to the completion of the IPO of the Company’s shares of Class A common stock, $0.00001 par value per share (the “Class A common stock”), the Company, Alclear and its subsidiaries consummated an internal reorganization (the “Reorganization”) which resulted in the following: • Clear Secure, Inc. became the sole managing member of Alclear. • The certificate of incorporation of Clear Secure, Inc. was amended and restated to authorize the Company to issue four classes of common stock: Class A common stock, Class B common stock, Class C common stock and Class D common stock. The Class A common stock and Class C common stock provide holders with one vote per share on all matters submitted to a vote of stockholders, and the Class B common stock and Class D common stock provide holders with twenty votes per share on all matters submitted to a vote of stockholders. The holders of Class C common stock and Class D common stock do not have any of the economic rights (including rights to dividends and distributions upon liquidation) provided to holders of Class A common stock and Class B common stock. • The Company converted all issued units in Alclear to Alclear Units (“Alclear Units”) having a value equal to the amount that would have been distributed in a hypothetical liquidation and certain members exchanged their Alclear Units for an equal number of Class A common stock. • Alclear Investments, LLC, an entity controlled by Ms. Caryn Seidman-Becker, our Chief Executive Officer and co-founder, and Alclear Investments II, LLC, an entity controlled by Mr. Kenneth Cornick, our President, Chief Financial Officer and co-founder, each exchanged certain of their Alclear Units for shares of Class B common stock. • The remaining members of Alclear, including Alclear Investments, LLC and Alclear Investments II, LLC, (“Alclear members”) subscribed for and purchased shares of the Company’s Class C common stock and Class D common stock at a purchase price of $0.00001 per share and in an amount equal to the number of Alclear Units held by such members. • The Company entered into a Tax Receivable Agreement (“TRA”) which generally provides for payment by the Company to the remaining members of Alclear, the “TRA Holders”, of 85% of the net cash savings, if any, in U.S. federal, state and local income tax and franchise tax that the Company actually realizes or is deemed to realize in certain circumstances. The Company will retain the benefit of the remaining 15% of these net cash savings. • Alclear is treated as a partnership for U.S. federal income tax purposes and, as such, is itself generally not subject to U.S. federal income tax under current U.S. tax laws. Clear Secure, Inc, as a member of Alclear, will be required to take into account for U.S. federal income tax purposes its distributive share of the items of income, gain, loss and deduction of Alclear. As the Reorganization is considered a transaction between entities under common control, the condensed consolidated financial statements for periods prior to the IPO and Reorganization have been adjusted to combine the previously separate entities for presentation purposes. Prior to the Reorganization, Clear Secure, Inc. had not engaged in any business or other activities, except in connection with its formation. On July 2, 2021, the Company completed the IPO of its Class A common stock. In the IPO, the Company sold an aggregate of 15,180,000 shares of Class A common stock, $0.00001 par value per share, at an offering price of $31 per share including as a result of the underwriters exercising their option to purchase up to 1,980,000 shares of Class A common stock. As a result, Clear Secure, Inc. received net proceeds from the IPO of approximately $445,875 after deducting underwriting discounts and commissions. As a result of the IPO, the Company contributed the net IPO Proceeds to Alclear in exchange for 15,180,000 Alclear Units. For the nine months ended September 30, 2021, the Company also incurred $8,907 of issuance related costs as a result of the IPO, that were recorded within additional paid in capital within the condensed consolidated balance sheets. Recently Adopted Accounting Pronouncements Emerging Growth Company Status The Company is an emerging growth company (“EGC”), as defined in the Jumpstart Our Business Startups Act of 2012 (the “JOBS Act”). Under the JOBS Act, emerging growth companies can delay adopting new or revised accounting standards issued subsequent to the enactment of the JOBS Act until such time as those standards apply to private companies. The Company has elected to use this extended transition period for complying with new or revised accounting standards that have different effective dates for public and private companies, until the earlier of the date that it (i) is no longer an EGC or (ii) affirmatively and irrevocably opts out of the extended transition period provided in the JOBS Act. As a result, these condensed consolidated financial statements may not be comparable to companies that comply with the new or revised accounting pronouncements as of public company effective dates. Intangibles Assets In August 2018, the Financial Accounting Standards Board (“FASB”) issued updated guidance on accounting for implementation costs incurred in a cloud computing arrangement that is a service contract. The Company adopted this guidance as of January 1, 2021 and in accordance with the new guidance, applied it prospectively to implementation costs incurred after the adoption as allowed by the standard. The adoption did not have a material effect on the Company’s condensed consolidated financial statements. Simplifying the Accounting for Income Taxes In December 2019, FASB issued updated guidance simplifying the accounting for income taxes by eliminating certain exceptions to the guidance in ASC 740 related to intra-period tax allocations and the methodology for calculating income taxes in an interim period. The guidance also simplifies aspects of the accounting for franchise taxes as well as enacted changes in tax laws or rates and clarifies the accounting for transactions that result in a step-up in the tax basis of goodwill. The Company adopted this guidance as of January 1, 2021. The adoption of this accounting pronouncement did not have a material impact on the Company’s condensed consolidated financial statements. Related Party Guidance for Variable Interest Entities In October 2018, the FASB issued updated guidance that requires consideration of indirect interest held through related parties under common control for determining whether fees paid to decision makers and service providers are variable interests. The amendments are required to be applied retrospectively with a cumulative-effect adjustment. The Company adopted the new guidance as of January 1, 2021 and its application did not have a material impact to the Company’s condensed consolidated financial statements. Recent Accounting Pronouncements Not Yet Adopted Leases In February 2016, the FASB issued ASU No. 2016-02, Leases (Topic 842) (ASU 2016-02), which will require lessees to recognize a right-of-use asset and a lease liability, initially measured at the present value of the lease payments, on the balance sheets for substantially all leases. This update also requires lessees to recognize a single lease cost for operating leases, calculated so that the cost of the lease is allocated over the lease term, generally on a straight-line basis. Public companies were required to adopt ASU 2016-02 for reporting periods after December 15, 2018. In 2020, ASU 2016-02 was amended to extend the adoption date for nonpublic entities and EGCs. Accordingly, the effective date of ASU 2016-02, as amended, is fiscal periods beginning after December 15, 2021, with early adoption permitted. The Company plans to adopt this guidance as of January 1, 2022 using the modified-retrospective approach as of the date of adoption which will not require the restatement of comparative periods. While the Company continues to evaluate the effect of the standard on its financial reporting, the Company anticipates that the adoption of the standard will have a material impact to the consolidated balance sheet with the primary effect being the recognition of right-of-use assets and corresponding lease liabilities for substantially all of the Company’s leases. The adoption is not expected to have a material impact on the Company's consolidated statements of operations or cash flows. Current Expected Credit Losses In June 2016, the FASB issued ASU No. 2016-13, Financial Instruments—Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments (ASU 2016-13), to replace the incurred loss impairment methodology under current U.S. GAAP with a methodology that reflects expected credit losses and requires consideration of a broader range of reasonable and supportable information to inform credit loss estimates. The Company will be required to use a forward-looking expected credit loss model for accounts receivable, loans, and other financial instruments. Public companies were required to adopt ASU 2016-13 for reporting periods after December 15, 2019. In 2019, ASU 2016-13 was amended to extend the adoption date for nonpublic entities and EGCs. The Company plans to adopt this guidance as of January 1, 2022 and is currently evaluating the potential impact of adopting this new accounting guidance.

Basis of Presentation and Summa

Basis of Presentation and Summary of Significant Accounting Policies	9 Months Ended
	Sep. 30, 2021
Accounting Policies [Abstract]
Basis of Presentation and Summary of Significant Accounting Policies	Basis of Presentation and Summary of Significant Accounting Policies Basis of Presentation and Principles of Consolidation The accompanying condensed consolidated financial statements of the Company have been prepared pursuant to the rules and regulations of the United States Securities and Exchange Commission (the “SEC”) regarding interim financial reporting. Accordingly, they do not include all of the information and notes required by accounting principles generally accepted in the United States of America (“U.S. GAAP”) for complete financial statements and should be read in conjunction with the audited consolidated financial statements and notes thereto included in the final prospectus (the “Prospectus”) dated June 29, 2021 and filed with the SEC pursuant to Rule 424(b) under the Securities Act of 1933, as amended (the “Securities Act”). Preparing financial statements requires management to make estimates and assumptions that affect the amounts that are reported in the financial statements and the accompanying disclosures, including the vesting of share-based and other deferred compensation plan awards. Although these estimates are based on management’s knowledge of current events and actions that the Company may undertake in the future, actual results may differ materially from the estimates. These condensed consolidated financial statements are presented in U.S. Dollars. The Company’s policy is to consolidate entities in which it has a controlling financial interest. The Company consolidates: • Voting interest entities (“VOEs”) where the Company holds a majority of the voting interest in such VOEs; and • Variable interest entities (“VIEs”) where the Company is the primary beneficiary. Since the Company is the sole managing member of Alclear, it consolidates the financial results of Alclear. Therefore, the Company reports a non-controlling interest based on Alclear Units held by the members of Alclear on the condensed consolidated balance sheets. Income or loss is attributed to the non-controlling interests based on the weighted average common units outstanding during the period and is presented on the condensed consolidated statements of operations and comprehensive income/(loss). Refer to Note 13 for more information. Intercompany transactions and balances are eliminated upon consolidation. Significant Accounting Policies The Company’s significant accounting policies are discussed in “Notes to Consolidated Financial Statements–Note 2. Summary of Significant Accounting Policies” in its Registration Statement on Form S-1 (File No. 333-256851) and the Prospectus included therein. With the exception of the accounting policies described below, there have been no significant changes to the accounting policies during the nine months ended September 30, 2021. Basic and Diluted Earnings (Loss) Per Share The Company applies the two-class method for calculating and presenting earnings (loss) per share by presenting earnings (loss) per share for Class A common stock and Class B common stock. In applying the two-class method, the Company allocates undistributed earnings equally on a per share basis between Class A common stock and Class B common stock. According to the Company’s certificate of incorporation, the holders of the Class A common stock and Class B common stock are entitled to participate in earnings equally on a per-share basis, as if all shares of common stock were of a single class. Holders of the Class A common stock and Class B common stock also have equal priority in liquidation and dividend distributions. Shares of Class C common stock and Class D common stock do not participate in earnings of the Company. As a result, the shares of Class C common stock and Class D common stock are not considered participating securities and are not included in the weighted-average shares outstanding for purposes of earnings (loss) per share.

Revenue

Revenue	9 Months Ended
	Sep. 30, 2021
Revenue from Contract with Customer [Abstract]
Revenue	Revenue The Company derives substantially all of its revenue from subscriptions to its consumer aviation service, CLEAR Plus. For the three and nine months ended September 30, 2021 and 2020, no individual airport accounted for more than 10% of membership revenue. The Company elected the practical expedient permitted to not adjust the transaction price of contracts with a duration of one year or less for the effects of a significant financing component at contract inception. Revenue by Geography For the three and nine months ended September 30, 2021 and 2020, all of the Company’s revenue was generated in the United States. Contract liabilities and assets The Company’s deferred revenue balance primarily relates to amounts received from customers for subscriptions paid in advance of the services being provided that will be earned within the next twelve months. The following table presents changes in the deferred revenue balance as of September 30: 2021 2020 Balance as of January 1 $ 101,542 $ 121,339 Deferral of revenue 230,458 155,992 Recognition of deferred revenue (172,411) (177,645) Balance as of September 30 $ 159,589 $ 99,686 The Company has obligations for refunds and other similar items of $2,994 as of September 30, 2021. The Company does not have any material variable consideration.

Prepaid Expenses and Other Curr

Prepaid Expenses and Other Current Assets	9 Months Ended
	Sep. 30, 2021
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]
Prepaid Expenses and Other Current Assets	Prepaid Expenses and Other Current Assets Prepaid expenses and other current assets as of September 30, 2021 and December 31, 2020 consist of the following: September 30, December 31, Prepaid software licenses $ 5,701 $ 5,504 Coronavirus aid, relief, and economic security act retention credit 2,036 2,036 Prepaid insurance costs 3,970 772 Other current assets 2,758 2,898 Total $ 14,465 $ 11,210

Fair Value Measurements

Fair Value Measurements	9 Months Ended
	Sep. 30, 2021
Fair Value Disclosures [Abstract]
Fair Value Measurements	Fair Value Measurements The Company values its available-for-sale debt securities and certain liabilities based on 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. In order to increase consistency and comparability in fair value measurements, a fair value hierarchy that prioritizes observable and unobservable inputs is used to measure fair value into three broad levels, which are described below: Level 1 – Quoted prices (unadjusted) in active markets that are accessible at the measurement date for identical assets or liabilities. The fair value hierarchy gives the highest priority to Level 1 inputs. Level 2 – Observable inputs other than Level 1 prices, such as quoted prices for similar assets or liabilities; quoted prices in inactive markets or model-derived valuations in which all significant inputs are observable or can be derived principally from or corroborated with observable market data. Level 3 – Unobservable inputs are used when little or no market data is available. The fair value hierarchy gives the lowest priority to Level 3 inputs. In determining fair value, the Company utilizes valuation techniques that maximize the use of observable inputs to the extent possible. In addition, the Company considers counterparty credit risk in its assessment of fair value. The asset or liability’s fair value measurement level within the fair value hierarchy is based on the lowest level of any input that is significant to the fair value measurement. Valuation techniques used need to maximize the use of observable inputs and minimize the use of unobservable inputs. The following is a description of the valuation methodologies used for assets and liabilities measured at fair value. Corporate bonds – Valued at the closing price reported on the active market on which the individual securities, all of which have counterparts with high credit ratings, are traded. Commercial paper – Value is based on yields currently available on comparable securities of issuers with similar credit ratings. Money market funds – Valued at the net asset value (“NAV”) of units of a collective fund. The NAV is used as a practical expedient to estimate fair value. This practical expedient is not used when it is determined to be probable that the fund will sell the investment for an amount different than the reported NAV. Warrant liabilities – Valued based on significant inputs not observed in the market and, thus, represents a Level 3 measurement. The Company estimated the fair value of the liability using the Black-Scholes option pricing model and the change in fair value was recognized in general and administrative expenses. Refer to Note 11 for further information. The contractual maturities of investments classified as marketable debt securities are as follows as of September 30, 2021 and December 31, 2020: September 30, December 31, Due within 1 year $ 335,457 $ 37,813 Total marketable debt securities $ 335,457 $ 37,813 Fair Value as of September 30, 2021 Level 1 Level 2 Level 3 Total Commercial paper $ — $ 131,466 $ — $ 131,466 U.S. Treasuries 77,804 — — 77,804 Corporate bonds — 109,972 — 109,972 Total assets in the fair value hierarchy 77,804 241,438 — 319,242 Money market funds measured at NAV (a) — — — 16,215 Total investments at fair value $ 77,804 $ 241,438 $ — $ 335,457 Warrant liabilities — — — — Total warrant liabilities at fair value $ — $ — $ — $ — Fair Value as of December 31, 2020 Level 1 Level 2 Level 3 Total Commercial paper $ — $ 11,932 $ — $ 11,932 U.S. Treasuries 5,380 — — 5,380 Corporate bonds — 20,444 — 20,444 Total assets in the fair value hierarchy 5,380 32,376 — 37,756 Money market funds measured at NAV (a) — — — 57 Total investments at fair value $ 5,380 $ 32,376 $ — $ 37,813 Warrant liabilities $ — $ — $ (17,740) $ (17,740) Total warrant liabilities at fair value $ — $ — $ (17,740) $ (17,740) ____________________________ (a) Certain money market funds that were measured at NAV per share (or its equivalent) have not been classified in the fair value hierarchy. The fair value amounts presented in this table are intended to permit reconciliation of the fair value hierarchy to the line items presented in the consolidated balance sheets. The Company had no continuous unrealized loss position from marketable securities as of September 30, 2021. The following table provides a summary of changes in fair value of the Company’s Level 3 warrant liabilities for the nine months ended September 30, 2021 and 2020: 2021 2020 Balance as of January 1 $ (17,740) $ (16,853) Warrants issued (289) — Issuance of equity upon exercise of certain warrants 30,206 — Issuance of equity upon settlement of certain warrants 619 — Fair value adjustments (12,796) (444) Balance as of September 30 $ — $ (17,297) See Note 11 for further information regarding these Level 3 fair value measurements. For certain other financial instruments, including accounts receivable, accounts payable, accrued liabilities, as well as other current liabilities, the carrying amounts approximate the fair value of such instruments due to the short maturity of these balances.

Property and Equipment, net

Property and Equipment, net	9 Months Ended
	Sep. 30, 2021
Property, Plant and Equipment [Abstract]
Property and Equipment, net	Property and Equipment, netProperty and equipment as of September 30, 2021 and December 31, 2020 consist of the following: Depreciation Period in Years September 30, December 31, Internally developed software 5 $ 36,746 $ 23,545 Acquired software 3 7,539 7,538 Equipment 5 20,821 18,210 Leasehold improvements 1-10 6,982 6,548 Furniture and fixtures 5 2,259 2,181 Construction in progress 10,754 7,255 Total property and equipment, cost 85,101 65,277 Less: accumulated depreciation (39,226) (30,036) Total property and equipment, net $ 45,875 $ 35,241 Depreciation and amortization expense related to property and equipment for three months ended September 30, 2021 and 2020, was $3,988 and $2,318, respectively. For the nine months ended September 30, 2021 and 2020, it was approximately $9,190 and $6,933, respectively.

Intangible Assets, net

Intangible Assets, net	9 Months Ended
	Sep. 30, 2021
Goodwill and Intangible Assets Disclosure [Abstract]
Intangible Assets, net	Intangible Assets, net Intangible assets consist as of September 30, 2021 and December 31, 2020 of the following: Amortization September 30, 2021 December 31, 2020 Patents 20 $ 2,007 $ 1,293 Other indefinite lived intangible assets 310 310 Total intangible assets, cost 2,317 1,603 Less: accumulated amortization (50) (39) Intangible assets, net $ 2,267 $ 1,564 Amortization expense of intangible assets was $11 and $12 for the nine months ended September 30, 2021 and 2020, respectively.

Restricted Cash

Restricted Cash	9 Months Ended
	Sep. 30, 2021
Cash and Cash Equivalents [Abstract]
Restricted Cash	Restricted CashAs of September 30, 2021 and December 31, 2020, the Company maintained bank deposits of $6,835 and $6,856, respectively, which were pledged as collateral for long-term letters of credit issued in favor of airports, in connection with the Company’s obligations under the revenue share agreements. Such amounts also include a letter of credit for the Company’s New York City corporate headquarters lease agreement.In addition, the Company also has a $16,000 restricted cash account against a letter of credit with a credit card company as a reserve against potential future refunds and chargebacks as of September 30, 2021 and December 31, 2020.

Other Assets

Other Assets	9 Months Ended
	Sep. 30, 2021
Other Assets, Noncurrent [Abstract]
Other Assets	Other Assets Other assets as of September 30, 2021 and December 31, 2020 consist of the following: September 30, December 31, Security deposits $ 242 $ 171 Loan fees 550 279 Certificates of deposit 459 459 Other long-term assets 443 62 Total $ 1,694 $ 971

Accrued Liabilities

Accrued Liabilities	9 Months Ended
	Sep. 30, 2021
Accrued Liabilities, Current [Abstract]
Accrued Liabilities	Accrued Liabilities Accrued liabilities consist of the following as of September 30, 2021 and December 31, 2020: September 30, December 31, Accrued compensation and benefits $ 13,729 $ 9,626 Accrued partnership liabilities 17,933 — Other accrued liabilities 13,532 8,678 Total $ 45,194 $ 18,304

Warrants

Warrants	9 Months Ended
	Sep. 30, 2021
Equity [Abstract]
Warrants	Warrants Historically, Alclear issued warrants to purchase shares of Class B redeemable capital units. These warrants were generally subject to performance-based vesting criteria, such as criteria related to new customer enrollments and technological innovations. The Company recognizes the expense for those warrants expected to vest on a straight-line basis over the requisite service period of the warrants, which generally ranges from three months to six years. For warrants that vest upon issuance, the entire cost is expensed immediately. As of January 1, 2021, Alclear had 658,382 equity warrants outstanding at a weighted-average exercise price of $222.15 and 70,000 liability warrants outstanding at a weighted-average exercise price of $36.74. Prior to the reorganization, Alclear issued the following warrants for Class B redeemable capital units as follows: Number of Units Weighted-average exercise price Liability awards 1,000 $ 1.00 Equity awards 114,797 $ 194.85 The fair values of warrants granted in 2021 were estimated based on the Black-Scholes option pricing model using the weighted-average significant unobservable inputs (Level 3 inputs) as follows: 2021 Risk-free interest rate 0.36% - 0.92% Exercise price $1.00-$290.00 Expected term 3-5 years Expected volatility 45.0% - 50.8% Prior to the Reorganization, certain warrant holders exercised their warrants for Class B redeemable capital units as follows: Number of Warrants Weighted-average exercise price Liability awards 70,000 $ 36.74 Equity awards 3,400 $ 1.00 On the date of exercise, the fair value of these warrants was estimated based on a Black-Scholes option pricing model using the weighted-average significant unobservable inputs (Level 3 inputs) as follows: Risk-free interest rate 0.16% -0.19% Exercise price $1.00- $36.74 Expected term 2-3 years Expected volatility 35.1% - 45.0% As part of the Reorganization, the remaining Alclear warrants were either exchanged for Clear Secure, Inc. warrants representing the right to receive Class A common stock or remained at Alclear and continue to be exercisable for Alclear Units. The exchange was completed at an approximate 19.98 per unit ratio, using a cashless exercise conversion method. The Clear Secure, Inc. warrants are subject to the same vesting terms as applied to Alclear warrants and maintained the same fair value immediately before and after the exchange of the warrants. As such, there was no additional expense that was recorded as a result of the exchange of the warrants. The following warrants remained issued after giving effect to the reorganization: Classification Number of Warrants Weighted-Average Exercise Price Weighted average Remaining Contractual Term (years) Exercisable for Class A common stock Equity awards 7,674,502 $ 0.01 1.04 Exercisable for Alclear Units Equity awards 968,043 $ 0.01 2.96 As of September 30, 2021, 3,207,922 warrants were vested and exercisable for Class A common stock and 71,782 warrants were vested and exercisable for Alclear Units at a weighted-average exercise of price of $0.01. The balance of the outstanding warrants are subject to certain performance based vesting criteria which the Company evaluates at each reporting period to determine the likelihood of achievement. Based on the likelihood of achievement of the vesting criteria, as of September 30, 2021 the Company estimated unrecognized warrant expense is $1,204. The Company recorded the following within general and administrative expense in the condensed consolidated statements of operations: Three Months Ended Nine Months Ended September 30, 2021 September 30, 2020 September 30, 2021 September 30, 2020 Liability awards $ — $ 444 $ 12,796 $ 444 Equity awards 1,509 1,698 3,431 1,698 Total $ 1,509 $ 2,142 $ 16,227 $ 2,142

Redeemable Capital Units

Redeemable Capital Units	9 Months Ended
	Sep. 30, 2021
Temporary Equity Disclosure [Abstract]
Redeemable Capital Units	Redeemable Capital Units Prior to the Reorganization and IPO, Alclear’s redeemable capital units were comprised of Class A and Class B redeemable capital units, which contained similar capital voting and economic rights. Class A and Class B redeemable capital units were classified as temporary equity given the redemption features that were outside of Alclear’s control. The total balance of the Class A and Class B redeemable capital units as of the following periods were: September 30, 2021 December 31, 2020 Class A redeemable capital units $ — $ 2,620 Class B redeemable capital units — 566,631 Total $ — $ 569,251 As of December 31, 2020, there were 261,942 Class A redeemable capital units authorized, issued and outstanding. As of December 31, 2020, there were 5,631,085 Class B redeemable capital units authorized, and 4,621,459 Class B redeemable capital units issued and outstanding. Prior to the Reorganization, during 2021, Alclear issued 277,813 Class B units through private offerings resulting in gross proceeds of $80,566 and issued 5,310 Class B units with a fair value of $1,540 in exchange for services related to the private offerings. In addition, Alclear repurchased and retired 11,869 Class B units for a total repurchase of $3,442. Alclear also issued 70,000 Class B units upon the exercise of certain warrants for exercise proceeds of $2,575. During the nine months ended September 30, 2020, Alclear issued 422,039 Class B units through private offerings for proceeds of $113,944, net of offering costs. In addition, there were tender offers where Alclear repurchased and retired 677,387 Class B units for gross purchase of $14,053 and where Alclear repurchased and retired 54,843 Class A units for gross purchase of $548.

Stockholder_s Equity

Stockholder’s Equity	9 Months Ended
	Sep. 30, 2021
Stockholders' Equity Note [Abstract]
Stockholder's Equity	Stockholders’ Equity Members’ Equity As a result of the Reorganization, members’ equity was zero as of September, 30, 2021. As of December 31, 2020, the Company had 21,042 authorized and 0 issued and outstanding Class C Capital Units, which were granted to employees as part of the Company’s annual compensation process. Prior to the Reorganization, Alclear also had 27 classes of nonvoting, non-capital units, of which 16 were issued as equity-based compensation and reflects equity-based compensation recorded for units granted and expected to vest based on the probability of achieving performance-based vesting conditions. From time to time, Alclear repurchased vested profit units and, to the extent the amount paid for profit units repurchased was in excess of the fair value, such excess was recorded in accumulated deficit. Prior to the Reorganization, during 2021, the Company repurchased 31,972 profit units for a total repurchase of $8,259. During the nine months ended September 30, 2020, the Company repurchased 283,759 profit units for a total repurchase of $1,633. Since such repurchases were at amounts that exceeded the then fair value of the units, the Company recorded expense of $0 and $712 for the three and nine months ended September 30, 2021, respectively. The Company also recorded expense of $67 and $50,465 for the three and nine months ended September 30, 2020, respectively. During the nine months ended September 30, 2021, $697 was recorded within general and administrative expense and $15 within research and development within the condensed consolidated statements of operations. During the nine months ended September 30, 2020, $44,514 was recorded within general and administrative expense, $5,910 was recorded within research and development and $41 was recorded within sales and marketing. 1,868,322 profit units were authorized, issued and outstanding at December 31, 2020. All profit units were converted in conjunction with the Reorganization, see Note 14 for additional information. Common Stock As discussed in Note 1, upon the Reorganization, the Company issued 59,240,306 shares of Class A common stock and 1,042,234 shares of Class B common stock in exchange for an equivalent amount of Alclear Units. In addition, Alclear members purchased 44,598,167 shares of Class C common stock and Alclear Investments, LLC and Alclear Investments II, LLC collectively purchased 26,709,821 shares of Class D Common stock which have voting rights equal to the number of Alclear Units held by the members of Alclear (“Alclear Members”). As part of the IPO, the Company issued an additional 15,180,000 shares of Class A common stock with a par value of $0.00001 on July 2, 2021. Treasury Stock The Company does not have a share repurchase program. The Company’s treasury stock consists of forfeited Restricted Stock Awards that are legally issued shares held by the Company that can be utilized to settle equity-based compensation awards issued by the Company and is recorded at par value. These shares are excluded from the calculation of the non-controlling interest ownership percentage below. As of September 30, 2021, the Company had 72,401 shares in treasury stock. Non-Controlling Interest The non-controlling interest balance represents the economic interest in Alclear held by the founders and members of Alclear. The following table summarizes the ownership of Common Units in Alclear as of September 30, 2021: Alclear Units Ownership Percentage Alclear Holding Units held by post-reorganization members 44,407,609 31.08 % Alclear Holding Units held by Alclear Investments, LLC and Alclear Investments II, LLC 24,756,018 17.33 % Total 69,163,627 48.41 % The non-controlling interest holders have the right to exchange Alclear Units, together with a corresponding number of shares of Class C common stock for Class A common stock or Class D common stock for Class B common stock. As such, exchanges by non-controlling interest holders will result in a change in ownership and reduce the amount recorded as non-controlling interest and increase Class A common stock and additional paid-in-capital for the Company. The non-controlling interest ownership percentage changed from 54.21% as of June 30, 2021 to 48.41% as of September 30, 2021. The primary driver of this decrease was attributable to the issuance of Class A shares, as well as related adjustments, due to the IPO. As of September, 30 2021, no Alclear Units have been exchanged.

Incentive Plans

Incentive Plans	9 Months Ended
	Sep. 30, 2021
Share-based Payment Arrangement [Abstract]
Incentive Plans	Incentive Plans 2021 Omnibus Incentive Plan The Clear Secure, Inc 2021 Omnibus Incentive Plan (“2021 Omnibus Incentive Plan”) became effective on June 29, 2021 to provide grants of equity-based awards to the employees, consultants, and directors of the Company and its affiliates. The 2021 Omnibus Incentive Plan authorized the issuance of up to 20,000,000 shares of Class A common stock as of the date of the Reorganization. The 2021 Omnibus Incentive Plan authorized the issuance of shares pursuant to the grant, settlement or exercise of restricted stock units (“RSUs”), restricted stock (“RSAs”), stock options and other share-based awards. Beginning with the first business day of each calendar year beginning in 2022 through 2031, the number of shares available will increase in an amount up to 5% of the total number of common shares outstanding (assuming exchange and/or conversion of all classes of common shares into Class A common stock) as of the last day of the immediately preceding year or a lesser amount approved by our board of directors or its compensation committee, so long as the total share reserve available for future awards at the time is not more than 12% of common shares outstanding (assuming exchange and/or conversion of all classes of common shares into Class A common stock). Alclear Holdings, LLC Equity Incentive Plan Prior to the Reorganization, Alclear granted profit unit awards and RSUs to various employees of the Company. In connection with the Company’s Reorganization described in Note 1, these awards were substituted as follows: • The Company substituted Alclear’s RSUs with RSUs under the 2021 Omnibus Incentive Plan. • The Company substituted Alclear’s performance vesting profit units with performance vesting RSUs under the 2021 Omnibus Incentive Plan. • The Company substituted Alclear’s other profit units with only a service vesting condition to RSAs under the 2021 Omnibus Incentive Plan. In all cases of the respective substitutions, the new awards retained the same terms and conditions (including applicable vesting requirements). Each award was converted to reflect the $31.00 share price contemplated in the Company’s IPO while retaining the same fair value. The RSUs originally granted by Alclear were subject to both service and liquidity event vesting conditions. The Company concluded that the Reorganization represented a qualifying liquidity event that would cause the RSUs’ liquidity event vesting conditions to be met. The following table summarizes information about the unvested profit units and RSUs in Alclear that were reclassified to RSAs or RSUs in the Company: Alclear RSU’s Weighted- Profit Units Weighted- Unvested balance, January 1, 2021 453,350 $ 14.51 9,085,704 $ 1.12 Granted 860,357 15.33 — — Vested — — (345,703) (0.40) Forfeited (25,479) (15.36) (881,227) (0.90) Effect of reorganization (1,288,228) (15.04) (7,858,774) (1.17) Unvested balance, September 30, 2021 — — — — Restricted Stock Awards In accordance with the Reorganization Agreement, the Company substituted Alclear Holdings’ profit units with service vesting conditions with RSAs, which are subject to the same vesting terms as applied to Alclear’s profit units; each also maintained the same fair value immediately before and after the exchange of the award. As such, there was no additional compensation expense that was recorded as a result of the substitution of the awards. The RSAs are subject to service-based vesting conditions and will vest on a specified date, provided the applicable service, generally three years, has been satisfied. The Company determines the fair value of each RSA based on the grant date and records the expense over the vesting period or requisite service period. The following is a summary of activity related to the RSAs associated with compensation arrangements during nine months ended September 30, 2021. RSA - Class A Common Stock Weighted- RSA - Alclear Units Weighted- Balance upon effect of reorganization* 1,878,986 $ 1.03 2,144,361 $ 1.29 Granted — — — — Vested (115,783) (0.92) — — Forfeited (72,401) (1.97) — — Unvested balance, September 30, 2021 1,690,802 $ 1.00 2,144,361 $ 1.29 *The amounts above reflect the Reorganization and maintain the fair value for the substitution of profit units to RSAs. Below is the compensation expense (credit) related to the RSAs: Three Months Ended Nine Months Ended September 30, 2021 September 30, 2020 September 30, 2021 September 30, 2020 Cost of direct salaries and benefits $ (7) $ — $ (7) $ — General and administrative 284 279 $ 884 $ 805 Research and development 41 96 149 234 Sales and marketing (3) 10 (31) 23 Total $ 315 $ 385 $ 995 $ 1,062 As of September 30, 2021, estimated unrecognized expense for RSAs that are probable of vesting was $826 with such expense to be recognized over a weighted-average period of approximately 0.6 years subsequent to September 30, 2021. Restricted Stock Units The RSUs granted under the 2021 Omnibus Incentive Plan in substitution of Alclear awards were subject to the same vesting terms as applied to the Alclear awards and maintained the same fair value immediately before and after the exchange of the award. The RSUs are subject to both service-based and, in some cases, business performance-based vesting conditions. RSUs will vest on a specified date, provided the applicable service (generally three years) and, if applicable, business performance condition, have been satisfied. The RSUs with performance conditions issued are also subject to long-term revenue and cash-basis earnings performance hurdles (the “Financial Targets”). The Company determines the fair value of each RSU based on the grant date and records the expense over the vesting period or requisite service period. The following is a summary of activity related to the RSUs associated with compensation arrangements during nine months ended September 30, 2021: RSU’s Weighted- RSU Units - Class B Common Stock Weighted- Balance upon effect of Reorganization* 3,009,982 $ 7.23 2,113,672 $ 2.29 Granted 1,240,853 42.10 — — Vested — — — — Forfeited (292,213) (3.27) (1,953,803) (1.29) Unvested balance, September 30, 2021 3,958,622 $ 18.45 159,869 $ 14.51 *The amounts above reflect the Reorganization and maintain the fair value for the substitution of Alclear RSUs to RSUs. Below is the compensation expense recognized related to the RSUs: Three Months Ended Nine Months Ended September 30, 2021 September 30, 2021 Cost of direct salaries and benefits $ 226 $ 226 General and administrative 2,913 5,882 Research and development 2,428 3,135 Sales and marketing 118 203 Total $ 5,685 $ 9,446 As of September 30, 2021, estimated unrecognized expense for RSUs that are probable of vesting was $61,498 with such expense to be recognized over a weighted-average period of approximately1.3 years. Founder PSUs During June 2021, the Company established a long-term incentive compensation plan for the co-founders, which consists of performance restricted stock-unit awards (the “Founder PSUs”), that will be settled in shares of Class A common stock pursuant to the 2021 Omnibus Incentive Plan, subject to the satisfaction of both service and market based vesting conditions. The grant date fair value for the Founder PSUs was determined by a Monte Carlo simulation and discounted by the risk-free rate on the grant date and an expected volatility of 45%. The Founder PSUs are estimated to vest over a five year period, based on the achievement of specified price hurdles of the Company’s Class A common stock. The specified price hurdles of the Company’s Class A common stock will be measured on the volume-weighted average price per share for the trailing days during any 180 day period that ends within the applicable measurement period. In June 2021, the Company granted 4,208,617 Founder PSUs at a weighted average grant date fair value of $16.54. The Company recorded the expense related to these awards within general and administrative in the condensed consolidated statements of operations. As of September 30, 2021, estimated unrecognized expense for Founder PSUs was $62,845 with such expense to be recognized over a weighted-average period of approximately 1.34 years. Below is a summary of total compensation expense recorded in relation to the Company’s incentive plans, excluding additional expense related to repurchases: Three Months Ended Nine Months Ended September 30, 2021 September 30, 2020 September 30, 2021 September 30, 2020 RSAs $ 315 $ 385 $ 995 $ 1,062 RSUs 5,685 — 9,446 — Founder PSUs 6,629 — 6,768 — Total $ 12,629 $ 385 $ 17,209 $ 1,062 Three Months Ended Nine Months Ended September 30, 2021 September 30, 2020 September 30, 2021 September 30, 2020 Cost of direct salaries and benefits $ 219 $ — $ 219 $ — General and administrative 9,826 279 13,534 805 Research and development 2,469 96 3,284 234 Sales and marketing 115 10 172 23 Total $ 12,629 $ 385 $ 17,209 $ 1,062

Earnings (Loss) per Share

Earnings (Loss) per Share	9 Months Ended
	Sep. 30, 2021
Earnings Per Share [Abstract]
Earnings (Loss) per Share	Earnings (Loss) per Share Basic earnings (loss) per share of Class A common stock and Class B common stock is computed by dividing net loss available to Clear Secure, Inc. by the respective weighted-average number of shares of common stock outstanding during the period. The Company applies the two-class method to calculate earnings per share for Class A and Class B shares. Accordingly, the Class A common stock and Class B common stock share equally in the Company’s net income and losses. Diluted earnings per share of common stock is computed by dividing net earnings (loss) attributable to Clear Secure, Inc., adjusted for the assumed exchange of all potentially dilutive instruments for common stock, by the weighted-average number of shares of common stock outstanding, adjusted to give effect to potentially dilutive securities. As described in Note 1, on June 29, 2021, the Operating Agreement was amended and restated to, among other things, (i) provide for a new single class of common membership interests, the Alclear Units, and (ii) exchange all of the then-existing membership interests of the original Alclear equity owners for Alclear Units. Basic and diluted earnings per Class A and Class B common stock is applicable only for periods after June 29, 2021, post the Reorganization, when the Company had outstanding Class A and B common stock. Shares of the Company’s Class C and Class D common stock do not participate in the earnings or losses of the Company and are therefore not participating securities. As such, separate presentation of basic and diluted earnings (loss) per share of Class C common stock and Class D common stock under the two-class method has not been presented. Each share of Class C common stock (together with a corresponding Alclear Unit) is exchangeable for one share of Class A common stock and each share of Class D common stock (together with a corresponding Alclear Unit) is exchangeable for one share of Class B common stock. Shares classified as treasury stock within the condensed consolidated balance sheets are excluded from the calculation of earnings (loss) per share. Below is the calculation of basic and diluted net loss per share: Three Months Ended September 30, 2021 Class A Class B Basic: Net loss attributable to Clear Secure, Inc. $ (16,675) $ (240) Weighted-average number of shares outstanding, basic 72,285,100 1,042,234 Net loss per common share, basic: $ (0.23) $ (0.23) Diluted: Net loss attributable to Clear Secure, Inc. $ (16,675) $ (240) Weighted-average number of shares outstanding, basic 72,285,100 1,042,234 Potentially dilutive shares — — Weighted-average number of shares outstanding, diluted 72,285,100 1,042,234 Net loss per common share, diluted: $ (0.23) $ (0.23) Nine Months Ended September 30, 2021 Class A Class B Basic: Net loss attributable to Clear Secure, Inc. $ (18,650) $ (269) Weighted-average number of shares outstanding, basic 72,124,741 1,042,234 Net loss per common share, basic: $ (0.26) $ (0.26) Diluted: Net loss attributable to Clear Secure, Inc. $ (18,650) $ (269) Weighted-average number of shares outstanding, basic 72,124,741 1,042,234 Potentially dilutive shares — — Weighted-average number of shares outstanding, diluted 72,124,741 1,042,234 Net loss per common share, diluted: $ (0.26) $ (0.26) Due to the net loss for the periods presented, the following potential shares of common stock were determined to be anti-dilutive: Three and Nine Months Ended September 30, 2021 Class A Class B Potentially dilutive warrants 3,279,705 — Potentially dilutive exchangeable Alclear Units 44,598,167 26,709,821 Potentially dilutive RSA’s 2,347,002 1,953,803 Potentially dilutive RSU’s 1,325,851 159,869 Potentially dilutive shares 51,550,725 28,823,493

Income Taxes

Income Taxes	9 Months Ended
	Sep. 30, 2021
Income Tax Disclosure [Abstract]
Income Taxes	Income TaxesAs a result of the IPO and Reorganization, the Company became the sole managing member of Alclear, which is treated as a partnership for U.S. federal and most applicable state and local income tax purposes. As a partnership, Alclear is generally not subject to U.S. federal and most state and local income taxes. Any taxable income or loss generated by Alclear is passed through to and included in the taxable income or loss of its members, including us, on a pro rata basis. The Company is subject to U.S. federal income taxes, in addition to state and local income taxes with respect to our allocable share of any taxable income or loss of Alclear, as well as any stand-alone income or loss generated by the Company. The Company is also subject to income taxes in Israel. The Company reported a tax provision of $60 on a pretax loss of $32,727 for the three months ended September 30, 2021 as compared to $4 on pretax income of $11,147 for the three months ended September 30, 2020. This resulted in an effective tax rate of (0.18)% for the three months ended September 30, 2021 as compared to 0.04% percent for the three months ended September 30, 2020. The Company reported a tax provision of $277 on a pretax loss of $83,737 for the nine months ended September 30, 2021, as compared to $14 on a pretax loss of $17,750 for the nine months ended September 30, 2020. This resulted in an effective tax rate of (0.33)% for the nine months ended September 30, 2021 as compared to (0.09)% for the nine months ended September 30, 2020. The Company's effective tax rate differs from the statutory rate primarily due to the following: (1) the impact of Alclear being a partnership and it allocating its taxable results to its non-controlling members, (2) movement in valuation allowance and (3) the impact of state and foreign taxes. The Company has not recorded any uncertain tax positions as of September 30, 2021. Clear Secure, Inc. was formed in March 2021 and did not engage in any operations prior to the IPO and the Reorganization. Additionally, although Alclear is treated as a partnership for U.S. federal and state income taxes purposes, it is still required to file an annual U.S. Return of Partnership Income, which is subject to examination by the Internal Revenue Service (“IRS”). The statute of limitations has expired for tax years through 2016 for Alclear. Tax Receivable Agreement The Company expects to obtain an increase in the share of the tax basis of its share of the assets of Alclear when Alclear Units are redeemed or exchanged by Alclear Members and other qualifying transactions. This increase in tax basis may have the effect of reducing the amounts that the Company would otherwise pay in the future to various tax authorities. The increase in tax basis may also decrease gains (or increase losses) on future dispositions of certain capital assets to the extent tax basis is allocated to those capital assets. As stated in Note 1, in connection with the IPO, the Company entered into the TRA, which generally provides for payment by the Company to the TRA Holders of 85% of the net cash savings, if any, in U.S. federal, state and local income tax and franchise tax that Clear Secure, Inc. actually realizes or is deemed to realize as a result of (i) any increase in tax basis in Alclear’s assets resulting from (a) exchanges by Alclear members (or their transferees or other assignees) of Alclear Units (along with the corresponding shares of our Class C common stock or Class D common stock, as applicable) for shares of the Company’s Class A common stock or Class B common stock, as applicable, and purchases of Alclear Units and corresponding shares of Class C common stock or Class D common stock, as the case may be, from the Alclear members (or their transferees or other assignees) or (b) payments under the TRA, and (ii) tax benefits related to imputed interest deemed arising as a result of payments made under the TRA. The Company will retain the benefit of the remaining 15% of these net cash savings.

Commitments and Contingencies

Commitments and Contingencies	9 Months Ended
	Sep. 30, 2021
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Commitments and Contingencies Litigation From time to time, the Company is involved in various legal proceedings arising in the ordinary course of business. The Company records a liability when it believes that it is probable that a loss will be incurred and the amount of loss or range of loss can be reasonably estimated. Based on the currently available information, the Company does not believe that there are claims or legal proceedings that would have a material adverse effect on the business, or the condensed consolidated financial statements of the Company. Leases, Sports Stadiums, and Airport Agreements During 2018, the Company entered into a lease for its new headquarters in New York City, which expires in 2030. Additionally, the Company rents floor and office space in airports under leases expiring through 2026, which include fixed monthly payments. The Company’s lease agreements, in addition to base rentals, generally are subject to escalation provisions based on certain costs incurred by the landlord. Certain leases have renewal options that can be exercised at the discretion of the Company. For the three months ended September 30, 2021 and 2020, the Company recorded rent expense of $1,618 and $1,461, respectively, and Revenue Share fee expense of $9,926 and $8,298, respectively. For the nine months ended September 30, 2021 and 2020, the Company recorded rent expense of $4,754 and $4,468, respectively, and Revenue Share fee expense of $25,995 and $25,707, respectively. The Company has commitments for future marketing expenditures to sports stadiums of $5,517 through 2026. For the three months ended September 30, 2021 and 2020, marketing expenses related to sports stadiums were approximately $1,503 and $—, respectively. For the nine months ended September 30, 2021 and 2020, marketing expenses related to sports stadiums were approximately $2,655 and $377, respectively. Future minimum payments under lease and airport agreements are as follows as of September 30, 2021: 2021 $ 4,093 2022 16,104 2023 14,941 2024 11,284 2025 9,773 Thereafter 21,803 Total $ 77,998

Related-Party Transactions

Related-Party Transactions	9 Months Ended
	Sep. 30, 2021
Related Party Transactions [Abstract]
Related-Party Transactions	Related-Party Transactions As of September 30, 2021, and December 31, 2020, the Company had total payables to certain related parties of $1,839 and $1,606. Additionally, for the three months ended September 30, 2021 and 2020, the Company recorded $2,084 and $1,855 in cost of revenue share within the condensed consolidated statements of operations, respectively in connection with certain related parties. For the nine months ended September 30, 2021 and 2020, the Company recorded $5,428 and $5,084, respectively in connection with certain related parties.

Employee Benefit Plan

Employee Benefit Plan	9 Months Ended
	Sep. 30, 2021
Retirement Benefits [Abstract]
Employee Benefit Plan	Employee Benefit PlanThe Company has a 401(k) savings and investment plan (the “401(k) Plan”). Participants make contributions to the 401(k) Plan in varying amounts, up to the maximum limits allowable under the Code. For the three months ended September 30, 2021 and 2020, the Company recorded discretionary employer contributions of $191 and $81, respectively, that was remitted to the plan. For the nine months ended September 30, 2021 and 2020, the Company recorded $828 and $311, respectively.

Debt

Debt	9 Months Ended
	Sep. 30, 2021
Debt Disclosure [Abstract]
Debt	DebtIn March 2020, the Company entered into a credit agreement for a three-year $50,000 revolving credit facility, with a group of lenders. In April 2021, the Company increased the commitments under the revolving credit facility to $100,000, which matures three years from the date of the increase. The line of credit has not been drawn against as of September 30, 2021. Prepaid loan fees related to this facility are presented within Other assets with the current portion being presented within prepaid and other current assets and will be amortized over the term of the credit agreement. As of September 30, 2021, the balance of these loan fees was $1,004. The credit agreement contains customary terms and conditions, including limitations on consolidations, mergers, indebtedness, and certain payments, as well as a financial covenant relating to leverage. Borrowings under the credit agreement generally will bear a floating interest rate per year and will also include interest based on the greater of the prime rate, London InterBank Offered Rate (LIBOR) or New York Federal Reserve Bank (NYFRB) rate, plus an applicable margin for specific interest periods. In addition, the credit agreement contains certain other covenants (none of which relate to financial condition), events of default and other customary provisions, and also contains customary LIBOR replacement mechanics. At September 30, 2021, the Company was in compliance with all of the financial and non-financial covenants.

Subsequent Events

Subsequent Events	9 Months Ended
	Sep. 30, 2021
Subsequent Events [Abstract]
Subsequent Events	Subsequent Events On November 4, 2021, the Company and 85 Tenth Avenue Associates, L.L.C. (“Landlord”) entered into a Lease (the “Lease Agreement”) pursuant to which the Company will lease approximately 120,000 square feet of an office building to house the Company’s corporate headquarters. The Lease Agreement provides for a commencement on the later of October 1, 2022 or the date on which the Landlord delivers possession of the premises with certain agreed upon completed improvements to be made by the Landlord. The term of the Lease Agreement is fifteen years after the date the rent obligations begin, with an option to renew for one 5-year or 10-year period at Fair Market Value (as defined in the Lease Agreement) by providing the Landlord with eighteen months’ notice and meeting certain other requirements.

Basis of Presentation and Sum_2

Basis of Presentation and Summary of Significant Accounting Policies (Policies)	9 Months Ended
	Sep. 30, 2021
Accounting Policies [Abstract]
Description and Organization	Description and Organization Clear Secure, Inc. (the “Company”) was incorporated as a Delaware corporation on March 2, 2021 for the purpose of facilitating an initial public offering (“IPO”) and other related transactions in order to carry on the business of Alclear Holdings, LLC and its wholly owned subsidiaries (collectively referred to as “Alclear”). The Company (together with its consolidated subsidiaries, “CLEAR”, “we”, “us”, “our”) is a holding company and its principal asset is the controlling equity interest in Alclear. Alclear was formed as a Delaware limited liability company on January 21, 2010 and operates under the terms of the Amended and Restated Operating Agreement dated June 29, 2021 (the “Operating Agreement”). As the sole managing member of Alclear, the Company operates and controls all of the business and affairs of Alclear, and through Alclear and its subsidiaries, conducts the Company’s business. The Company operates a secure identity platform operating under the brand name CLEAR in the United States. CLEAR’s current offerings include: CLEAR Plus, a consumer aviation subscription service which enables access to predictable and fast experiences through dedicated entry lanes in airport security checkpoints nationwide, the flagship CLEAR App, including Home to Gate and Health Pass, and CLEAR Pass for U.S. Customs and Border Protection ("CBP") Mobile Passport Control, a free to use mobile app, that streamlines entry into the United States. Since the Company is the sole managing member of Alclear, it consolidates the financial results of Alclear. Therefore, the Company reports a non-controlling interest based on Alclear Units held by the members of Alclear on the condensed consolidated balance sheets. Income or loss is attributed to the non-controlling interests based on the weighted average common units outstanding during the period and is presented on the condensed consolidated statements of operations and comprehensive income/(loss). Refer to Note 13 for more information. Intercompany transactions and balances are eliminated upon consolidation.
Recent Accounting Pronouncements	Recently Adopted Accounting Pronouncements Emerging Growth Company Status The Company is an emerging growth company (“EGC”), as defined in the Jumpstart Our Business Startups Act of 2012 (the “JOBS Act”). Under the JOBS Act, emerging growth companies can delay adopting new or revised accounting standards issued subsequent to the enactment of the JOBS Act until such time as those standards apply to private companies. The Company has elected to use this extended transition period for complying with new or revised accounting standards that have different effective dates for public and private companies, until the earlier of the date that it (i) is no longer an EGC or (ii) affirmatively and irrevocably opts out of the extended transition period provided in the JOBS Act. As a result, these condensed consolidated financial statements may not be comparable to companies that comply with the new or revised accounting pronouncements as of public company effective dates. Intangibles Assets In August 2018, the Financial Accounting Standards Board (“FASB”) issued updated guidance on accounting for implementation costs incurred in a cloud computing arrangement that is a service contract. The Company adopted this guidance as of January 1, 2021 and in accordance with the new guidance, applied it prospectively to implementation costs incurred after the adoption as allowed by the standard. The adoption did not have a material effect on the Company’s condensed consolidated financial statements. Simplifying the Accounting for Income Taxes In December 2019, FASB issued updated guidance simplifying the accounting for income taxes by eliminating certain exceptions to the guidance in ASC 740 related to intra-period tax allocations and the methodology for calculating income taxes in an interim period. The guidance also simplifies aspects of the accounting for franchise taxes as well as enacted changes in tax laws or rates and clarifies the accounting for transactions that result in a step-up in the tax basis of goodwill. The Company adopted this guidance as of January 1, 2021. The adoption of this accounting pronouncement did not have a material impact on the Company’s condensed consolidated financial statements. Related Party Guidance for Variable Interest Entities In October 2018, the FASB issued updated guidance that requires consideration of indirect interest held through related parties under common control for determining whether fees paid to decision makers and service providers are variable interests. The amendments are required to be applied retrospectively with a cumulative-effect adjustment. The Company adopted the new guidance as of January 1, 2021 and its application did not have a material impact to the Company’s condensed consolidated financial statements. Recent Accounting Pronouncements Not Yet Adopted Leases In February 2016, the FASB issued ASU No. 2016-02, Leases (Topic 842) (ASU 2016-02), which will require lessees to recognize a right-of-use asset and a lease liability, initially measured at the present value of the lease payments, on the balance sheets for substantially all leases. This update also requires lessees to recognize a single lease cost for operating leases, calculated so that the cost of the lease is allocated over the lease term, generally on a straight-line basis. Public companies were required to adopt ASU 2016-02 for reporting periods after December 15, 2018. In 2020, ASU 2016-02 was amended to extend the adoption date for nonpublic entities and EGCs. Accordingly, the effective date of ASU 2016-02, as amended, is fiscal periods beginning after December 15, 2021, with early adoption permitted. The Company plans to adopt this guidance as of January 1, 2022 using the modified-retrospective approach as of the date of adoption which will not require the restatement of comparative periods. While the Company continues to evaluate the effect of the standard on its financial reporting, the Company anticipates that the adoption of the standard will have a material impact to the consolidated balance sheet with the primary effect being the recognition of right-of-use assets and corresponding lease liabilities for substantially all of the Company’s leases. The adoption is not expected to have a material impact on the Company's consolidated statements of operations or cash flows. Current Expected Credit Losses In June 2016, the FASB issued ASU No. 2016-13, Financial Instruments—Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments (ASU 2016-13), to replace the incurred loss impairment methodology under current U.S. GAAP with a methodology that reflects expected credit losses and requires consideration of a broader range of reasonable and supportable information to inform credit loss estimates. The Company will be required to use a forward-looking expected credit loss model for accounts receivable, loans, and other financial instruments. Public companies were required to adopt ASU 2016-13 for reporting periods after December 15, 2019. In 2019, ASU 2016-13 was amended to extend the adoption date for nonpublic entities and EGCs. The Company plans to adopt this guidance as of January 1, 2022 and is currently evaluating the potential impact of adopting this new accounting guidance.
Basis of Accounting	The accompanying condensed consolidated financial statements of the Company have been prepared pursuant to the rules and regulations of the United States Securities and Exchange Commission (the “SEC”) regarding interim financial reporting. Accordingly, they do not include all of the information and notes required by accounting principles generally accepted in the United States of America (“U.S. GAAP”) for complete financial statements and should be read in conjunction with the audited consolidated financial statements and notes thereto included in the final prospectus (the “Prospectus”) dated June 29, 2021 and filed with the SEC pursuant to Rule 424(b) under the Securities Act of 1933, as amended (the “Securities Act”).
Use of Estimates	Preparing financial statements requires management to make estimates and assumptions that affect the amounts that are reported in the financial statements and the accompanying disclosures, including the vesting of share-based and other deferred compensation plan awards. Although these estimates are based on management’s knowledge of current events and actions that the Company may undertake in the future, actual results may differ materially from the estimates. These condensed consolidated financial statements are presented in U.S. Dollars.
Basic and Diluted Earnings (Loss) Per Share	Basic and Diluted Earnings (Loss) Per Share The Company applies the two-class method for calculating and presenting earnings (loss) per share by presenting earnings (loss) per share for Class A common stock and Class B common stock. In applying the two-class method, the Company allocates undistributed earnings equally on a per share basis between Class A common stock and Class B common stock. According to the Company’s certificate of incorporation, the holders of the Class A common stock and Class B common stock are entitled to participate in earnings equally on a per-share basis, as if all shares of common stock were of a single class. Holders of the Class A common stock and Class B common stock also have equal priority in liquidation and dividend distributions. Shares of Class C common stock and Class D common stock do not participate in earnings of the Company. As a result, the shares of Class C common stock and Class D common stock are not considered participating securities and are not included in the weighted-average shares outstanding for purposes of earnings (loss) per share.
Fair Value Measurements	Fair Value Measurements The Company values its available-for-sale debt securities and certain liabilities based on 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. In order to increase consistency and comparability in fair value measurements, a fair value hierarchy that prioritizes observable and unobservable inputs is used to measure fair value into three broad levels, which are described below: Level 1 – Quoted prices (unadjusted) in active markets that are accessible at the measurement date for identical assets or liabilities. The fair value hierarchy gives the highest priority to Level 1 inputs. Level 2 – Observable inputs other than Level 1 prices, such as quoted prices for similar assets or liabilities; quoted prices in inactive markets or model-derived valuations in which all significant inputs are observable or can be derived principally from or corroborated with observable market data. Level 3 – Unobservable inputs are used when little or no market data is available. The fair value hierarchy gives the lowest priority to Level 3 inputs. In determining fair value, the Company utilizes valuation techniques that maximize the use of observable inputs to the extent possible. In addition, the Company considers counterparty credit risk in its assessment of fair value. The asset or liability’s fair value measurement level within the fair value hierarchy is based on the lowest level of any input that is significant to the fair value measurement. Valuation techniques used need to maximize the use of observable inputs and minimize the use of unobservable inputs. The following is a description of the valuation methodologies used for assets and liabilities measured at fair value. Corporate bonds – Valued at the closing price reported on the active market on which the individual securities, all of which have counterparts with high credit ratings, are traded. Commercial paper – Value is based on yields currently available on comparable securities of issuers with similar credit ratings. Money market funds – Valued at the net asset value (“NAV”) of units of a collective fund. The NAV is used as a practical expedient to estimate fair value. This practical expedient is not used when it is determined to be probable that the fund will sell the investment for an amount different than the reported NAV.

Revenue (Tables)

Revenue (Tables)	9 Months Ended
	Sep. 30, 2021
Revenue from Contract with Customer [Abstract]
Changes in Deferred Revenue	The following table presents changes in the deferred revenue balance as of September 30: 2021 2020 Balance as of January 1 $ 101,542 $ 121,339 Deferral of revenue 230,458 155,992 Recognition of deferred revenue (172,411) (177,645) Balance as of September 30 $ 159,589 $ 99,686

Prepaid Expenses and Other Cu_2

Prepaid Expenses and Other Current Assets (Tables)	9 Months Ended
	Sep. 30, 2021
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]
Schedule of Other Current Assets	Prepaid expenses and other current assets as of September 30, 2021 and December 31, 2020 consist of the following: September 30, December 31, Prepaid software licenses $ 5,701 $ 5,504 Coronavirus aid, relief, and economic security act retention credit 2,036 2,036 Prepaid insurance costs 3,970 772 Other current assets 2,758 2,898 Total $ 14,465 $ 11,210

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	9 Months Ended
	Sep. 30, 2021
Fair Value Disclosures [Abstract]
Investments Classified by Contractual Maturity Date	The contractual maturities of investments classified as marketable debt securities are as follows as of September 30, 2021 and December 31, 2020: September 30, December 31, Due within 1 year $ 335,457 $ 37,813 Total marketable debt securities $ 335,457 $ 37,813
Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis	Fair Value as of September 30, 2021 Level 1 Level 2 Level 3 Total Commercial paper $ — $ 131,466 $ — $ 131,466 U.S. Treasuries 77,804 — — 77,804 Corporate bonds — 109,972 — 109,972 Total assets in the fair value hierarchy 77,804 241,438 — 319,242 Money market funds measured at NAV (a) — — — 16,215 Total investments at fair value $ 77,804 $ 241,438 $ — $ 335,457 Warrant liabilities — — — — Total warrant liabilities at fair value $ — $ — $ — $ — Fair Value as of December 31, 2020 Level 1 Level 2 Level 3 Total Commercial paper $ — $ 11,932 $ — $ 11,932 U.S. Treasuries 5,380 — — 5,380 Corporate bonds — 20,444 — 20,444 Total assets in the fair value hierarchy 5,380 32,376 — 37,756 Money market funds measured at NAV (a) — — — 57 Total investments at fair value $ 5,380 $ 32,376 $ — $ 37,813 Warrant liabilities $ — $ — $ (17,740) $ (17,740) Total warrant liabilities at fair value $ — $ — $ (17,740) $ (17,740) ____________________________ (a) Certain money market funds that were measured at NAV per share (or its equivalent) have not been classified in the fair value hierarchy. The fair value amounts presented in this table are intended to permit reconciliation of the fair value hierarchy to the line items presented in the consolidated balance sheets.
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation	The following table provides a summary of changes in fair value of the Company’s Level 3 warrant liabilities for the nine months ended September 30, 2021 and 2020: 2021 2020 Balance as of January 1 $ (17,740) $ (16,853) Warrants issued (289) — Issuance of equity upon exercise of certain warrants 30,206 — Issuance of equity upon settlement of certain warrants 619 — Fair value adjustments (12,796) (444) Balance as of September 30 $ — $ (17,297)

Property and Equipment, net (Ta

Property and Equipment, net (Tables)	9 Months Ended
	Sep. 30, 2021
Property, Plant and Equipment [Abstract]
Property and Equipment, net	Property and equipment as of September 30, 2021 and December 31, 2020 consist of the following: Depreciation Period in Years September 30, December 31, Internally developed software 5 $ 36,746 $ 23,545 Acquired software 3 7,539 7,538 Equipment 5 20,821 18,210 Leasehold improvements 1-10 6,982 6,548 Furniture and fixtures 5 2,259 2,181 Construction in progress 10,754 7,255 Total property and equipment, cost 85,101 65,277 Less: accumulated depreciation (39,226) (30,036) Total property and equipment, net $ 45,875 $ 35,241

Intangible Assets, net (Tables)

Intangible Assets, net (Tables)	9 Months Ended
	Sep. 30, 2021
Goodwill and Intangible Assets Disclosure [Abstract]
Schedule of Finite-Lived Intangible Assets	Intangible assets consist as of September 30, 2021 and December 31, 2020 of the following: Amortization September 30, 2021 December 31, 2020 Patents 20 $ 2,007 $ 1,293 Other indefinite lived intangible assets 310 310 Total intangible assets, cost 2,317 1,603 Less: accumulated amortization (50) (39) Intangible assets, net $ 2,267 $ 1,564
Schedule of Indefinite-Lived Intangible Assets	Intangible assets consist as of September 30, 2021 and December 31, 2020 of the following: Amortization September 30, 2021 December 31, 2020 Patents 20 $ 2,007 $ 1,293 Other indefinite lived intangible assets 310 310 Total intangible assets, cost 2,317 1,603 Less: accumulated amortization (50) (39) Intangible assets, net $ 2,267 $ 1,564

Other Assets (Tables)

Other Assets (Tables)	9 Months Ended
	Sep. 30, 2021
Other Assets, Noncurrent [Abstract]
Other Assets	Other assets as of September 30, 2021 and December 31, 2020 consist of the following: September 30, December 31, Security deposits $ 242 $ 171 Loan fees 550 279 Certificates of deposit 459 459 Other long-term assets 443 62 Total $ 1,694 $ 971

Accrued Liabilities (Tables)

Accrued Liabilities (Tables)	9 Months Ended
	Sep. 30, 2021
Accrued Liabilities, Current [Abstract]
Schedule of Accrued Liabilities	Accrued liabilities consist of the following as of September 30, 2021 and December 31, 2020: September 30, December 31, Accrued compensation and benefits $ 13,729 $ 9,626 Accrued partnership liabilities 17,933 — Other accrued liabilities 13,532 8,678 Total $ 45,194 $ 18,304

Warrants (Tables)

Warrants (Tables)	9 Months Ended
	Sep. 30, 2021
Equity [Abstract]
Schedule of Stockholders' Equity Note, Warrants or Rights	Prior to the reorganization, Alclear issued the following warrants for Class B redeemable capital units as follows: Number of Units Weighted-average exercise price Liability awards 1,000 $ 1.00 Equity awards 114,797 $ 194.85 Number of Warrants Weighted-average exercise price Liability awards 70,000 $ 36.74 Equity awards 3,400 $ 1.00 The following warrants remained issued after giving effect to the reorganization: Classification Number of Warrants Weighted-Average Exercise Price Weighted average Remaining Contractual Term (years) Exercisable for Class A common stock Equity awards 7,674,502 $ 0.01 1.04 Exercisable for Alclear Units Equity awards 968,043 $ 0.01 2.96 The Company recorded the following within general and administrative expense in the condensed consolidated statements of operations: Three Months Ended Nine Months Ended September 30, 2021 September 30, 2020 September 30, 2021 September 30, 2020 Liability awards $ — $ 444 $ 12,796 $ 444 Equity awards 1,509 1,698 3,431 1,698 Total $ 1,509 $ 2,142 $ 16,227 $ 2,142
Fair Value Measurement Inputs and Valuation Techniques of Warrants	The fair values of warrants granted in 2021 were estimated based on the Black-Scholes option pricing model using the weighted-average significant unobservable inputs (Level 3 inputs) as follows: 2021 Risk-free interest rate 0.36% - 0.92% Exercise price $1.00-$290.00 Expected term 3-5 years Expected volatility 45.0% - 50.8% On the date of exercise, the fair value of these warrants was estimated based on a Black-Scholes option pricing model using the weighted-average significant unobservable inputs (Level 3 inputs) as follows: Risk-free interest rate 0.16% -0.19% Exercise price $1.00- $36.74 Expected term 2-3 years Expected volatility 35.1% - 45.0%

Redeemable Capital Units (Table

Redeemable Capital Units (Tables)	9 Months Ended
	Sep. 30, 2021
Temporary Equity Disclosure [Abstract]
Temporary Equity	The total balance of the Class A and Class B redeemable capital units as of the following periods were: September 30, 2021 December 31, 2020 Class A redeemable capital units $ — $ 2,620 Class B redeemable capital units — 566,631 Total $ — $ 569,251

Stockholder_s Equity (Tables)

Stockholder’s Equity (Tables)	9 Months Ended
	Sep. 30, 2021
Stockholders' Equity Note [Abstract]
Noncontrolling Interest Ownership	The non-controlling interest balance represents the economic interest in Alclear held by the founders and members of Alclear. The following table summarizes the ownership of Common Units in Alclear as of September 30, 2021: Alclear Units Ownership Percentage Alclear Holding Units held by post-reorganization members 44,407,609 31.08 % Alclear Holding Units held by Alclear Investments, LLC and Alclear Investments II, LLC 24,756,018 17.33 % Total 69,163,627 48.41 %

Incentive Plans (Tables)

Incentive Plans (Tables)	9 Months Ended
	Sep. 30, 2021
Share-based Payment Arrangement [Abstract]
Schedule of Nonvested Share Activity	The following table summarizes information about the unvested profit units and RSUs in Alclear that were reclassified to RSAs or RSUs in the Company: Alclear RSU’s Weighted- Profit Units Weighted- Unvested balance, January 1, 2021 453,350 $ 14.51 9,085,704 $ 1.12 Granted 860,357 15.33 — — Vested — — (345,703) (0.40) Forfeited (25,479) (15.36) (881,227) (0.90) Effect of reorganization (1,288,228) (15.04) (7,858,774) (1.17) Unvested balance, September 30, 2021 — — — —
Share-based Payment Arrangement, Restricted Stock and Restricted Stock Unit, Activity	The following is a summary of activity related to the RSAs associated with compensation arrangements during nine months ended September 30, 2021. RSA - Class A Common Stock Weighted- RSA - Alclear Units Weighted- Balance upon effect of reorganization* 1,878,986 $ 1.03 2,144,361 $ 1.29 Granted — — — — Vested (115,783) (0.92) — — Forfeited (72,401) (1.97) — — Unvested balance, September 30, 2021 1,690,802 $ 1.00 2,144,361 $ 1.29
Share-based Payment Arrangement, Expensed and Capitalized, Amount	Below is the compensation expense (credit) related to the RSAs: Three Months Ended Nine Months Ended September 30, 2021 September 30, 2020 September 30, 2021 September 30, 2020 Cost of direct salaries and benefits $ (7) $ — $ (7) $ — General and administrative 284 279 $ 884 $ 805 Research and development 41 96 149 234 Sales and marketing (3) 10 (31) 23 Total $ 315 $ 385 $ 995 $ 1,062 Below is the compensation expense recognized related to the RSUs: Three Months Ended Nine Months Ended September 30, 2021 September 30, 2021 Cost of direct salaries and benefits $ 226 $ 226 General and administrative 2,913 5,882 Research and development 2,428 3,135 Sales and marketing 118 203 Total $ 5,685 $ 9,446 Three Months Ended Nine Months Ended September 30, 2021 September 30, 2020 September 30, 2021 September 30, 2020 RSAs $ 315 $ 385 $ 995 $ 1,062 RSUs 5,685 — 9,446 — Founder PSUs 6,629 — 6,768 — Total $ 12,629 $ 385 $ 17,209 $ 1,062 Three Months Ended Nine Months Ended September 30, 2021 September 30, 2020 September 30, 2021 September 30, 2020 Cost of direct salaries and benefits $ 219 $ — $ 219 $ — General and administrative 9,826 279 13,534 805 Research and development 2,469 96 3,284 234 Sales and marketing 115 10 172 23 Total $ 12,629 $ 385 $ 17,209 $ 1,062
Share-based Payment Arrangement, Restricted Stock Unit, Activity	The following is a summary of activity related to the RSUs associated with compensation arrangements during nine months ended September 30, 2021: RSU’s Weighted- RSU Units - Class B Common Stock Weighted- Balance upon effect of Reorganization* 3,009,982 $ 7.23 2,113,672 $ 2.29 Granted 1,240,853 42.10 — — Vested — — — — Forfeited (292,213) (3.27) (1,953,803) (1.29) Unvested balance, September 30, 2021 3,958,622 $ 18.45 159,869 $ 14.51

Earnings (Loss) per Share (Tabl

Earnings (Loss) per Share (Tables)	9 Months Ended
	Sep. 30, 2021
Earnings Per Share [Abstract]
Schedule of Earnings Per Share, Basic and Diluted	Below is the calculation of basic and diluted net loss per share: Three Months Ended September 30, 2021 Class A Class B Basic: Net loss attributable to Clear Secure, Inc. $ (16,675) $ (240) Weighted-average number of shares outstanding, basic 72,285,100 1,042,234 Net loss per common share, basic: $ (0.23) $ (0.23) Diluted: Net loss attributable to Clear Secure, Inc. $ (16,675) $ (240) Weighted-average number of shares outstanding, basic 72,285,100 1,042,234 Potentially dilutive shares — — Weighted-average number of shares outstanding, diluted 72,285,100 1,042,234 Net loss per common share, diluted: $ (0.23) $ (0.23) Nine Months Ended September 30, 2021 Class A Class B Basic: Net loss attributable to Clear Secure, Inc. $ (18,650) $ (269) Weighted-average number of shares outstanding, basic 72,124,741 1,042,234 Net loss per common share, basic: $ (0.26) $ (0.26) Diluted: Net loss attributable to Clear Secure, Inc. $ (18,650) $ (269) Weighted-average number of shares outstanding, basic 72,124,741 1,042,234 Potentially dilutive shares — — Weighted-average number of shares outstanding, diluted 72,124,741 1,042,234 Net loss per common share, diluted: $ (0.26) $ (0.26)
Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share	Due to the net loss for the periods presented, the following potential shares of common stock were determined to be anti-dilutive: Three and Nine Months Ended September 30, 2021 Class A Class B Potentially dilutive warrants 3,279,705 — Potentially dilutive exchangeable Alclear Units 44,598,167 26,709,821 Potentially dilutive RSA’s 2,347,002 1,953,803 Potentially dilutive RSU’s 1,325,851 159,869 Potentially dilutive shares 51,550,725 28,823,493

Commitments and Contingencies (

Commitments and Contingencies (Tables)	9 Months Ended
	Sep. 30, 2021
Commitments and Contingencies Disclosure [Abstract]
Summary of Future Minimum Lease Payments	Future minimum payments under lease and airport agreements are as follows as of September 30, 2021: 2021 $ 4,093 2022 16,104 2023 14,941 2024 11,284 2025 9,773 Thereafter 21,803 Total $ 77,998

Description of Business and R_2

Description of Business and Recent Accounting Developments - Narrative (Details) $ / shares in Units, $ in Thousands	Jul. 02, 2021USD ($)$ / sharesshares	Sep. 30, 2021USD ($)vote$ / shares	Sep. 30, 2020USD ($)	Jun. 29, 2021$ / shares
Class of Stock [Line Items]
Percent of savings for holders		0.85
Percent of savings for the company		0.15
IPO proceeds, net of underwriter fees and issuance costs | $		$ 437,494	$ 0
Alclear common units purchased (in shares) | shares	15,180,000
Stock issuance costs | $		$ 8,907
Common Class A
Class of Stock [Line Items]
Par value (in USD per share)		$ 0.00001
Number of votes per share | vote		1
Common Class B
Class of Stock [Line Items]
Par value (in USD per share)		$ 0.00001
Number of votes per share | vote		20
Common Class C
Class of Stock [Line Items]
Par value (in USD per share)		$ 0.00001
Number of votes per share | vote		1
Common Class D
Class of Stock [Line Items]
Par value (in USD per share)		$ 0.00001
Number of votes per share | vote		20
IPO
Class of Stock [Line Items]
Shares issued (in shares) | shares	15,180,000
IPO | Common Class A
Class of Stock [Line Items]
Par value (in USD per share)	$ 0.00001			$ 0.00001
Share price (in USD per share)	$ 31
IPO proceeds, net of underwriter fees and issuance costs | $	$ 445,875
Over-Allotment Option | Common Class A
Class of Stock [Line Items]
Shares issued (in shares) | shares	1,980,000

Revenue - Narrative (Details)

Revenue - Narrative (Details) $ in Thousands	Sep. 30, 2021USD ($)
Revenue from Contract with Customer [Abstract]
Refund liability	$ 2,994

Revenue - Changes in Deferred R

Revenue - Changes in Deferred Revenue (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020
Change in Contract with Customer, Liability [Roll Forward]
Beginning balance	$ 101,542	$ 121,339
Deferral of revenue	230,458	155,992
Recognition of deferred revenue	(172,411)	(177,645)
Ending balance	$ 159,589	$ 99,686

Prepaid Expenses and Other Cu_3

Prepaid Expenses and Other Current Assets - Schedule of Prepaid Expenses and Other Current Assets (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]
Prepaid software licenses	$ 5,701	$ 5,504
Coronavirus aid, relief, and economic security act retention credit	2,036	2,036
Prepaid insurance costs	3,970	772
Other current assets	2,758	2,898
Total	$ 14,465	$ 11,210

Prepaid Expenses and Other Cu_4

Prepaid Expenses and Other Current Assets - Narrative (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]
Coronavirus aid, relief, and economic security act retention credit	$ 2,036	$ 2,036

Fair Value Measurements - Marke

Fair Value Measurements - Marketable Debt Securities (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Debt Securities, Available-for-sale, Fair Value, Fiscal Year Maturity [Abstract]
Due within 1 year	$ 335,457	$ 37,813
Marketable debt securities	$ 335,457	$ 37,813

Fair Value Measurements - Fair

Fair Value Measurements - Fair Value Measured on a Recurring Basis (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total investments at fair value	$ 335,457	$ 37,813
Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total investments at fair value	335,457	37,813
Warrant liabilities	0	(17,740)
Total warrant liabilities at fair value	0	(17,740)
Fair Value, Inputs, Level 1, 2 and 3 | Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total investments at fair value	319,242	37,756
Level 1 | Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total investments at fair value	77,804	5,380
Warrant liabilities	0	0
Total warrant liabilities at fair value	0	0
Level 2 | Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total investments at fair value	241,438	32,376
Warrant liabilities	0	0
Total warrant liabilities at fair value	0	0
Level 3 | Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total investments at fair value	0	0
Warrant liabilities	0	(17,740)
Total warrant liabilities at fair value	0	(17,740)
Commercial paper | Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total investments at fair value	131,466	11,932
Commercial paper | Level 1 | Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total investments at fair value	0	0
Commercial paper | Level 2 | Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total investments at fair value	131,466	11,932
Commercial paper | Level 3 | Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total investments at fair value	0	0
U.S. Treasuries | Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total investments at fair value	77,804	5,380
U.S. Treasuries | Level 1 | Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total investments at fair value	77,804	5,380
U.S. Treasuries | Level 2 | Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total investments at fair value	0	0
U.S. Treasuries | Level 3 | Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total investments at fair value	0	0
Corporate bonds | Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total investments at fair value	109,972	20,444
Corporate bonds | Level 1 | Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total investments at fair value	0	0
Corporate bonds | Level 2 | Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total investments at fair value	109,972	20,444
Corporate bonds | Level 3 | Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total investments at fair value	0	0
Money Market Funds | Fair Value Measured at Net Asset Value Per Share | Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total investments at fair value	$ 16,215	$ 57

Fair Value Measurements - Sched

Fair Value Measurements - Schedule of Changes in Fair Value of Warrant Liabilities (Details) - Equity awards - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance, beginning of period	$ (17,740)	$ (16,853)
Warrants issued	(289)	0
Issuance of equity upon exercise of certain warrants	30,206	0
Issuance of equity upon settlement of certain warrants	619	0
Fair value adjustments	(12,796)	(444)
Balance, end of period	$ 0	$ (17,297)

Property and Equipment, net - S

Property and Equipment, net - Schedule of Property and Equipment (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2021	Dec. 31, 2020
Property, Plant and Equipment [Line Items]
Total property and equipment, cost	$ 85,101	$ 65,277
Less: accumulated depreciation	(39,226)	(30,036)
Total property and equipment, net	$ 45,875	35,241
Internally developed software
Property, Plant and Equipment [Line Items]
Depreciation Period in Years	5 years
Total property and equipment, cost	$ 36,746	23,545
Acquired software
Property, Plant and Equipment [Line Items]
Depreciation Period in Years	3 years
Total property and equipment, cost	$ 7,539	7,538
Equipment
Property, Plant and Equipment [Line Items]
Depreciation Period in Years	5 years
Total property and equipment, cost	$ 20,821	18,210
Leasehold improvements
Property, Plant and Equipment [Line Items]
Total property and equipment, cost	$ 6,982	6,548
Leasehold improvements | Minimum
Property, Plant and Equipment [Line Items]
Depreciation Period in Years	1 year
Leasehold improvements | Maximum
Property, Plant and Equipment [Line Items]
Depreciation Period in Years	10 years
Furniture and fixtures
Property, Plant and Equipment [Line Items]
Depreciation Period in Years	5 years
Total property and equipment, cost	$ 2,259	2,181
Construction in progress
Property, Plant and Equipment [Line Items]
Total property and equipment, cost	$ 10,754	$ 7,255

Property and Equipment, net - N

Property and Equipment, net - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Property, Plant and Equipment [Abstract]
Depreciation	$ 3,988	$ 2,318	$ 9,190	$ 6,933
Capitalized costs associated with internally developed software			13,199	4,561
Amortization expense	$ 1,470	$ 915	$ 3,855	$ 2,611

Intangible Assets, net - Schedu

Intangible Assets, net - Schedule of Intangible Assets (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2021	Dec. 31, 2020
Intangible Assets, Net (Excluding Goodwill) [Abstract]
Total intangible assets, cost	$ 2,317	$ 1,603
Less: accumulated amortization	(50)	(39)
Intangible assets, net	2,267	1,564
Other Intangible Assets
Indefinite-lived Intangible Assets [Line Items]
Other indefinite lived intangible assets	$ 310	310
Patents
Finite-Lived Intangible Assets [Line Items]
Amortization Period in Years	20 years
Patents	$ 2,007	$ 1,293

Intangible Assets, net - Narrat

Intangible Assets, net - Narrative (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020
Goodwill and Intangible Assets Disclosure [Abstract]
Amortization of intangible assets	$ 11	$ 12

Restricted Cash (Details)

Restricted Cash (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Cash and Cash Equivalents [Line Items]
Restricted cash	$ 22,835	$ 22,856
Bank Time Deposits
Cash and Cash Equivalents [Line Items]
Restricted cash	6,835	6,856
Letter of Credit
Cash and Cash Equivalents [Line Items]
Restricted cash	$ 16,000	$ 16,000

Other Assets (Details)

Other Assets (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Other Assets, Noncurrent [Abstract]
Security deposits	$ 242	$ 171
Loan fees	550	279
Certificates of deposit	459	459
Other long-term assets	443	62
Total	$ 1,694	$ 971

Accrued Liabilities (Details)

Accrued Liabilities (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Accrued Liabilities, Current [Abstract]
Accrued compensation and benefits	$ 13,729	$ 9,626
Accrued partnership liabilities	17,933	0
Other accrued liabilities	13,532	8,678
Total	$ 45,194	$ 18,304

Warrants - Narrative (Details)

Warrants - Narrative (Details) $ / shares in Units, $ in Thousands	Jun. 30, 2021	Sep. 30, 2021USD ($)$ / sharesshares	Jun. 29, 2021$ / shares	Jan. 01, 2021$ / sharesshares
Class of Warrant or Right [Line Items]
Weighted-average exercise price (in USD per share) | $ / shares		$ 0.01
Exchange ratio	19.98
Warrants
Class of Warrant or Right [Line Items]
Future unrecognized expense | $		$ 1,204
Warrants | Minimum
Class of Warrant or Right [Line Items]
Award requisite service period (in years)		3 months
Warrants | Maximum
Class of Warrant or Right [Line Items]
Award requisite service period (in years)		6 years
Equity Awards
Class of Warrant or Right [Line Items]
Warrants outstanding (in shares)				658,382
Weighted-average exercise price (in USD per share) | $ / shares			$ 1	$ 222.15
Exercisable for Class A common stock
Class of Warrant or Right [Line Items]
Warrants outstanding (in shares)		7,674,502
Weighted-average exercise price (in USD per share) | $ / shares		$ 0.01
Warrants vested and exercisable (in shares)		3,207,922
Exercisable for Alclear Units
Class of Warrant or Right [Line Items]
Warrants outstanding (in shares)		968,043
Weighted-average exercise price (in USD per share) | $ / shares		$ 0.01
Warrants vested and exercisable (in shares)		71,782
Liability Awards
Class of Warrant or Right [Line Items]
Warrants outstanding (in shares)				70,000
Weighted-average exercise price (in USD per share) | $ / shares			$ 36.74	$ 36.74

Warrants - Schedule of Warrants

Warrants - Schedule of Warrants Outstanding (Details) - $ / shares	Jun. 29, 2021	Jun. 28, 2021	Sep. 30, 2021	Jan. 01, 2021
Class of Warrant or Right [Line Items]
Weighted-average exercise price (in USD per share)			$ 0.01
Liability Awards
Class of Warrant or Right [Line Items]
Number of warrants issued (in shares)		1,000
Weighted average exercise price of warrants or rights issued (in USD per share)		$ 1
Weighted-average exercise price (in USD per share)	$ 36.74			$ 36.74
Number of warrants exercised (in shares)	70,000
Warrants outstanding (in shares)				70,000
Equity Awards
Class of Warrant or Right [Line Items]
Number of warrants issued (in shares)		114,797
Weighted average exercise price of warrants or rights issued (in USD per share)		$ 194.85
Weighted-average exercise price (in USD per share)	$ 1			$ 222.15
Number of warrants exercised (in shares)	3,400
Warrants outstanding (in shares)				658,382
Exercisable for Class A common stock
Class of Warrant or Right [Line Items]
Weighted-average exercise price (in USD per share)			$ 0.01
Warrants outstanding (in shares)			7,674,502
Weighted-average remaining contractual term (in years)			1 year 14 days
Exercisable for Alclear Units
Class of Warrant or Right [Line Items]
Weighted-average exercise price (in USD per share)			$ 0.01
Warrants outstanding (in shares)			968,043
Weighted-average remaining contractual term (in years)			2 years 11 months 15 days

Warrants - Fair Value Measureme

Warrants - Fair Value Measurement Inputs For Warrants (Details) - Valuation Technique, Option Pricing Model - Level 3	Sep. 30, 2021$ / shares
Risk-free interest rate | Warrants Granted | Minimum
Class of Warrant or Right [Line Items]
Warrants and rights outstanding, measurement input	0.0036
Risk-free interest rate | Warrants Granted | Maximum
Class of Warrant or Right [Line Items]
Warrants and rights outstanding, measurement input	0.0092
Risk-free interest rate | Warrants Exercised | Minimum
Class of Warrant or Right [Line Items]
Warrants and rights outstanding, measurement input	0.0016
Risk-free interest rate | Warrants Exercised | Maximum
Class of Warrant or Right [Line Items]
Warrants and rights outstanding, measurement input	0.0019
Exercise price | Warrants Granted | Minimum
Class of Warrant or Right [Line Items]
Warrants and rights outstanding, measurement input	1
Exercise price | Warrants Granted | Maximum
Class of Warrant or Right [Line Items]
Warrants and rights outstanding, measurement input	290
Exercise price | Warrants Exercised | Minimum
Class of Warrant or Right [Line Items]
Warrants and rights outstanding, measurement input	1
Exercise price | Warrants Exercised | Maximum
Class of Warrant or Right [Line Items]
Warrants and rights outstanding, measurement input	36.74
Expected term | Warrants Granted | Minimum
Class of Warrant or Right [Line Items]
Weighted-average remaining contractual term (in years)	3 years
Expected term | Warrants Granted | Maximum
Class of Warrant or Right [Line Items]
Weighted-average remaining contractual term (in years)	5 years
Expected term | Warrants Exercised | Minimum
Class of Warrant or Right [Line Items]
Weighted-average remaining contractual term (in years)	2 years
Expected term | Warrants Exercised | Maximum
Class of Warrant or Right [Line Items]
Weighted-average remaining contractual term (in years)	3 years
Expected volatility | Warrants Granted | Minimum
Class of Warrant or Right [Line Items]
Warrants and rights outstanding, measurement input	0.450
Expected volatility | Warrants Granted | Maximum
Class of Warrant or Right [Line Items]
Warrants and rights outstanding, measurement input	0.508
Expected volatility | Warrants Exercised | Minimum
Class of Warrant or Right [Line Items]
Warrants and rights outstanding, measurement input	0.351
Expected volatility | Warrants Exercised | Maximum
Class of Warrant or Right [Line Items]
Warrants and rights outstanding, measurement input	0.450

Warrants - Schedule of Warrant

Warrants - Schedule of Warrant Expenses (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Class of Warrant or Right [Line Items]
Liability expense related to warrants	$ 0	$ 444	$ 12,796	$ 444
Equity-based compensation	12,629	385	17,209	1,062
Total	1,509	2,142	16,227	2,142
Equity awards
Class of Warrant or Right [Line Items]
Equity-based compensation	$ 1,509	$ 1,698	$ 3,431	$ 1,698

Redeemable Capital Units - Rede

Redeemable Capital Units - Redeemable Units for the Period (Details) - USD ($)	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019
Temporary Equity [Line Items]
Total redeemable units	$ 0	$ 0	$ 650,660,000	$ 569,251,000
Class A Redeemable Units
Temporary Equity [Line Items]
Total redeemable units	0			2,620,000	$ 2,620,000	$ 2,620,000	$ 2,620,000	$ 3,168,000
Class B Redeemable Units
Temporary Equity [Line Items]
Total redeemable units	$ 0			$ 566,631,000	$ 533,678,000	$ 533,535,000	$ 533,394,000	$ 432,062,000

Redeemable Capital Units - Narr

Redeemable Capital Units - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended	9 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Jun. 28, 2021	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2020	Jun. 30, 2020	Dec. 31, 2019
Temporary Equity [Line Items]
Temporary equity issuance	$ 81,567
Temporary equity issued upon exercise of certain warrants (in shares)			70,000
Proceeds from the exercise of warrants			$ 2,575	$ 2,575	$ 0
Class A Redeemable Units
Temporary Equity [Line Items]
Temporary equity, shares authorized (in shares)						261,942
Temporary equity issuance (in shares)						261,942
Temporary equity, shares outstanding (in shares)		261,942			261,942	261,942	261,942	316,785
Temporary equity repurchased and retired (in shares)		54,843
Temporary equity repurchased and retired		$ 548
Class B Redeemable Units
Temporary Equity [Line Items]
Temporary equity, shares authorized (in shares)						5,631,085
Temporary equity issuance (in shares)						4,621,459
Temporary equity, shares outstanding (in shares)		4,504,221			4,504,221	4,621,459	4,504,221	4,759,569
Temporary equity issuance (in shares)		422,039			422,039
Temporary equity issuance		$ 113,944			$ 113,944
Temporary equity repurchased and retired (in shares)		677,387	11,869
Temporary equity repurchased and retired		$ 14,053	$ 3,442
Private Placement | Class B Redeemable Units
Temporary Equity [Line Items]
Temporary equity issuance (in shares)			277,813
Temporary equity issuance			$ 80,566
Temporary equity issued for services (in shares)			5,310
Temporary equity issued for services			$ 1,540
Tender Offer | Class A Redeemable Units
Temporary Equity [Line Items]
Temporary equity repurchased and retired (in shares)					54,843
Temporary equity repurchased and retired					$ 548
Tender Offer | Class B Redeemable Units
Temporary Equity [Line Items]
Temporary equity repurchased and retired (in shares)					677,387
Temporary equity repurchased and retired					$ 14,053

Stockholder_s Equity - Narrativ

Stockholder’s Equity - Narrative (Details)	Jul. 02, 2021$ / sharesshares	Sep. 30, 2021USD ($)$ / sharesshares	Sep. 30, 2020USD ($)	Jun. 28, 2021USD ($)shares	Sep. 30, 2021USD ($)$ / sharesshares	Sep. 30, 2020USD ($)shares	Jun. 30, 2021USD ($)	Jun. 29, 2021classOfStock$ / shares	Mar. 31, 2021USD ($)	Dec. 31, 2020USD ($)shares
Class of Stock [Line Items]
Total redeemable units | $		$ 0			$ 0		$ 0		$ 650,660,000	$ 569,251,000
Number of classes | classOfStock								27
Number of classes accounting for share-based compensation | classOfStock								16
Profit units repurchased (in shares)				31,972		283,759
Profit units repurchased | $				$ 8,259,000		$ 1,633,000
Profit units repurchased in excess of fair value | $		$ 0	$ 67,000		$ 712,000	50,465,000
Treasury stock (in shares)		72,401			72,401
General and administrative
Class of Stock [Line Items]
Profit units repurchased in excess of fair value | $					$ 697,000	44,514,000
Research and development
Class of Stock [Line Items]
Profit units repurchased in excess of fair value | $					$ 15,000	5,910,000
Sales and marketing
Class of Stock [Line Items]
Profit units repurchased in excess of fair value | $						$ 41,000
Class C Capital Units
Class of Stock [Line Items]
Capital units authorized (in shares)										21,042
Capital units issued (in shares)										0
Capital units outstanding (in shares)										0
Profit Units
Class of Stock [Line Items]
Capital units authorized (in shares)										1,868,322
Capital units issued (in shares)										1,868,322
Capital units outstanding (in shares)										1,868,322
Common Class A
Class of Stock [Line Items]
Conversion shares issued (in shares)	59,240,306
Par value (in USD per share) | $ / shares		$ 0.00001			$ 0.00001
Common Class A | IPO
Class of Stock [Line Items]
Stock issued during period (in shares)	15,180,000
Par value (in USD per share) | $ / shares	$ 0.00001							$ 0.00001
Common Class B
Class of Stock [Line Items]
Conversion shares issued (in shares)	1,042,234
Par value (in USD per share) | $ / shares		0.00001			0.00001
Common Class C
Class of Stock [Line Items]
Par value (in USD per share) | $ / shares		0.00001			0.00001
Common Class C | Employee Stock
Class of Stock [Line Items]
Stock issued during period (in shares)	44,598,167
Common Class D
Class of Stock [Line Items]
Par value (in USD per share) | $ / shares		$ 0.00001			$ 0.00001
Common Class D | Employee Stock
Class of Stock [Line Items]
Stock issued during period (in shares)	26,709,821

Stockholder_s Equity - Non-cont

Stockholder’s Equity - Non-controlling Interest (Details) - Non-Controlling Interest - Alclear Holdings LLC - shares	Sep. 30, 2021	Jun. 30, 2021
Class of Stock [Line Items]
Alclear Units (in shares)	69,163,627
Ownership Percentage	48.41%	54.21%
Post IPO Members
Class of Stock [Line Items]
Alclear Units (in shares)	44,407,609
Ownership Percentage	31.08%
Founders
Class of Stock [Line Items]
Alclear Units (in shares)	24,756,018
Ownership Percentage	17.33%

Incentive Plans - Narrative (De

Incentive Plans - Narrative (Details) $ / shares in Units, $ in Thousands	Jun. 30, 2021	Jun. 29, 2021$ / sharesshares	Jun. 30, 2021$ / sharesshares	Sep. 30, 2021USD ($)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares authorized (in shares) | shares		20,000,000
Percent increase in authorized shares	0.05
Maximum percentage of outstanding stock	12.00%
Common stock, conversion price (in USD per share) | $ / shares		$ 31
Additional compensation expense due to substitution of awards				$ 0
Restricted Stock Units (RSUs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award requisite service period (in years)				3 years
Unrecognized expense				$ 61,498
Period for recognition (in years)				1 year 3 months 18 days
Restricted Stock Awards (RSAs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award requisite service period (in years)				3 years
Unrecognized expense				$ 826
Award vesting period (in years)				7 months 6 days
Performance Restricted Stock Units (PSUs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized expense				$ 62,845
Award vesting period (in years)			5 years
Period for recognition (in years)				1 year 4 months 2 days
Expected volatility rate			45.00%
Price volatility measurement period (in days)			180 days
Granted (in shares) | shares			4,208,617
Granted (in USD per share) | $ / shares			$ 16.54

Incentive Plans - Share-based P

Incentive Plans - Share-based Payment Arrangements (Details) - $ / shares	1 Months Ended	3 Months Ended	9 Months Ended
	Jun. 30, 2021	Sep. 30, 2021	Sep. 30, 2021	Dec. 31, 2020
Alclear Restricted Stock Units
Share-based Payment Arrangement
Unvested balance, beginning of period (in shares)			453,350
Granted (in shares)			860,357
Vested (in shares)			0
Forfeited (in shares)			(25,479)
Effect of reorganization (in shares)			(1,288,228)
Unvested balance, end of period (in shares)		0	0
Weighted- Average Grant-Date Fair Value
Unvested balance, beginning of period (in USD per share)		$ 0	$ 0	$ 14.51
Granted (in USD per share)			15.33
Vested (in USD per share)			0
Forfeited (in USD per share)			(15.36)
Effect of reorganization (in USD per share)			(15.04)
Unvested balance, end of period (in USD per share)		$ 0	$ 0
Alclear Restricted Stock Awards
Share-based Payment Arrangement
Unvested balance, beginning of period (in shares)			9,085,704
Granted (in shares)			0
Vested (in shares)			(345,703)
Forfeited (in shares)			(881,227)
Effect of reorganization (in shares)			(7,858,774)
Unvested balance, end of period (in shares)		0	0
Weighted- Average Grant-Date Fair Value
Unvested balance, beginning of period (in USD per share)		$ 0	$ 0	$ 1.12
Granted (in USD per share)			0
Vested (in USD per share)			(0.40)
Forfeited (in USD per share)			(0.90)
Effect of reorganization (in USD per share)			(1.17)
Unvested balance, end of period (in USD per share)		$ 0	$ 0
Restricted Stock Awards (RSAs) | Common Class A
Share-based Payment Arrangement
Unvested balance, beginning of period (in shares)		1,878,986
Granted (in shares)		0
Vested (in shares)		(115,783)
Forfeited (in shares)		(72,401)
Unvested balance, end of period (in shares)	1,878,986	1,690,802	1,690,802
Weighted- Average Grant-Date Fair Value
Unvested balance, beginning of period (in USD per share)	$ 1.03	$ 1	$ 1
Granted (in USD per share)		0
Vested (in USD per share)		(0.92)
Forfeited (in USD per share)		(1.97)
Unvested balance, end of period (in USD per share)	$ 1.03	$ 1	$ 1
Restricted Stock Awards (RSAs) | Alclear Units
Share-based Payment Arrangement
Unvested balance, beginning of period (in shares)		2,144,361
Granted (in shares)		0
Vested (in shares)		0
Forfeited (in shares)		0
Unvested balance, end of period (in shares)	2,144,361	2,144,361	2,144,361
Weighted- Average Grant-Date Fair Value
Unvested balance, beginning of period (in USD per share)	$ 1.29	$ 1.29	$ 1.29
Granted (in USD per share)		0
Vested (in USD per share)		0
Forfeited (in USD per share)		0
Unvested balance, end of period (in USD per share)	$ 1.29	$ 1.29	$ 1.29
Restricted Stock Units (RSUs) | Common Class A
Share-based Payment Arrangement
Unvested balance, beginning of period (in shares)		3,009,982
Granted (in shares)		1,240,853
Vested (in shares)		0
Forfeited (in shares)		(292,213)
Unvested balance, end of period (in shares)	3,009,982	3,958,622	3,958,622
Weighted- Average Grant-Date Fair Value
Unvested balance, beginning of period (in USD per share)	$ 7.23	$ 18.45	$ 18.45
Granted (in USD per share)		42.10
Vested (in USD per share)		0
Forfeited (in USD per share)		(3.27)
Unvested balance, end of period (in USD per share)	$ 7.23	$ 18.45	$ 18.45
Restricted Stock Units (RSUs) | Class B common stock par value $0.00001 per share
Share-based Payment Arrangement
Unvested balance, beginning of period (in shares)		2,113,672
Granted (in shares)		0
Vested (in shares)		0
Forfeited (in shares)		(1,953,803)
Unvested balance, end of period (in shares)	2,113,672	159,869	159,869
Weighted- Average Grant-Date Fair Value
Unvested balance, beginning of period (in USD per share)	$ 2.29	$ 14.51	$ 14.51
Granted (in USD per share)		0
Vested (in USD per share)		0
Forfeited (in USD per share)		(1.29)
Unvested balance, end of period (in USD per share)	$ 2.29	$ 14.51	$ 14.51

Incentive Plans - Compensation

Incentive Plans - Compensation Expense (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expenses related to warrants	$ 12,629	$ 385	$ 17,209	$ 1,062
Cost of direct salaries and benefits
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expenses related to warrants	219	0	219	0
General and administrative
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expenses related to warrants	9,826	279	13,534	805
Research and development
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expenses related to warrants	2,469	96	3,284	234
Sales and marketing
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expenses related to warrants	115	10	172	23
Restricted Stock Awards (RSAs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expenses related to warrants	315	385	995	1,062
Restricted Stock Awards (RSAs) | Cost of direct salaries and benefits
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expenses related to warrants	(7)	0	(7)	0
Restricted Stock Awards (RSAs) | General and administrative
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expenses related to warrants	284	279	884	805
Restricted Stock Awards (RSAs) | Research and development
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expenses related to warrants	41	96	149	234
Restricted Stock Awards (RSAs) | Sales and marketing
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expenses related to warrants	(3)	10	(31)	23
Restricted Stock Units (RSUs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expenses related to warrants	5,685	0	9,446	0
Restricted Stock Units (RSUs) | Cost of direct salaries and benefits
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expenses related to warrants	226		226
Restricted Stock Units (RSUs) | General and administrative
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expenses related to warrants	2,913		5,882
Restricted Stock Units (RSUs) | Research and development
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expenses related to warrants	2,428		3,135
Restricted Stock Units (RSUs) | Sales and marketing
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expenses related to warrants	118		203
Performance Restricted Stock Units (PSUs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expenses related to warrants	$ 6,629	$ 0	$ 6,768	$ 0

Earnings (Loss) per Share - Ear

Earnings (Loss) per Share - Earnings Per Share Calculation (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2021	Sep. 30, 2021
Common Class A
Basic:
Net loss attributable to Clear Secure, Inc.	$ (16,675)	$ (18,650)
Weighted-average number of shares outstanding, basic (in shares)	72,285,100	72,124,741
Net loss per common share, basic (in USD per share)	$ (0.23)	$ (0.26)
Diluted:
Net loss attributable to Clear Secure, Inc.	$ (16,675)	$ (18,650)
Weighted-average number of shares outstanding, basic (in shares)	72,285,100	72,124,741
Potentially dilutive shares (in shares)	0	0
Weighted-average number of shares outstanding, diluted (in shares)	72,285,100	72,124,741
Net loss per common share, diluted (in USD per share)	$ (0.23)	$ (0.26)
Common Class B
Basic:
Net loss attributable to Clear Secure, Inc.	$ (240)	$ (269)
Weighted-average number of shares outstanding, basic (in shares)	1,042,234	1,042,234
Net loss per common share, basic (in USD per share)	$ (0.23)	$ (0.26)
Diluted:
Net loss attributable to Clear Secure, Inc.	$ (240)	$ (269)
Weighted-average number of shares outstanding, basic (in shares)	1,042,234	1,042,234
Potentially dilutive shares (in shares)	0	0
Weighted-average number of shares outstanding, diluted (in shares)	1,042,234	1,042,234
Net loss per common share, diluted (in USD per share)	$ (0.23)	$ (0.26)

Earnings (Loss) per Share - Sch

Earnings (Loss) per Share - Schedule of Anti-dilutive Securities (Details) - shares	3 Months Ended	9 Months Ended
	Sep. 30, 2021	Sep. 30, 2021
Common Class A
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Potentially dilutive shares (in shares)	51,550,725	51,550,725
Common Class B
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Potentially dilutive shares (in shares)	28,823,493	28,823,493
Potentially dilutive warrants | Common Class A
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Potentially dilutive shares (in shares)	3,279,705	3,279,705
Potentially dilutive warrants | Common Class B
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Potentially dilutive shares (in shares)	0	0
Potentially dilutive exchangeable Alclear Units | Common Class A
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Potentially dilutive shares (in shares)	44,598,167	44,598,167
Potentially dilutive exchangeable Alclear Units | Common Class B
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Potentially dilutive shares (in shares)	26,709,821	26,709,821
Potentially dilutive RSA’s | Common Class A
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Potentially dilutive shares (in shares)	2,347,002	2,347,002
Potentially dilutive RSA’s | Common Class B
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Potentially dilutive shares (in shares)	1,953,803	1,953,803
Potentially dilutive RSU’s | Common Class A
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Potentially dilutive shares (in shares)	1,325,851	1,325,851
Potentially dilutive RSU’s | Common Class B
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Potentially dilutive shares (in shares)	159,869	159,869

Income Taxes - Narrative (Detai

Income Taxes - Narrative (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Income Tax Disclosure [Abstract]
Income tax expense	$ 60,000	$ 4,000	$ 277,000	$ 14,000
Pretax loss	$ (32,727,000)	$ 11,147,000	$ (83,737,000)	$ (17,750,000)
Effective income tax rate	(0.18%)	0.04%	(0.33%)	(0.09%)
Uncertain tax positions	$ 0		$ 0
Percent of savings for holders			0.85
Percent of savings for the company			0.15

Commitments and Contingencies -

Commitments and Contingencies - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Long-term Purchase Commitment [Line Items]
Rent expense	$ 1,618	$ 1,461	$ 4,754	$ 4,468
Revenue Share fee	9,926	8,298	25,995	25,707
Marketing expense	$ 1,503	$ 0	2,655	$ 377
Sales and marketing
Long-term Purchase Commitment [Line Items]
Long-term purchase commitment, amount			$ 5,517

Commitments and Contingencies_2

Commitments and Contingencies - Future Minimum Lease Payments (Details) $ in Thousands	Sep. 30, 2021USD ($)
Operating Leases, Future Minimum Payments Due, Fiscal Year Maturity [Abstract]
2021	$ 4,093
2022	16,104
2023	14,941
2024	11,284
2025	9,773
Thereafter	21,803
Total	$ 77,998

Related-Party Transactions - Na

Related-Party Transactions - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2020
Related Party Transaction [Line Items]
Accounts payable, related parties	$ 1,839		$ 1,839		$ 1,606
Affiliated Entity
Related Party Transaction [Line Items]
Related party costs	$ 2,084	$ 1,855	$ 5,428	$ 5,084

Employee Benefit Plan (Details)

Employee Benefit Plan (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Retirement Benefits [Abstract]
Discretionary contribution amount	$ 191	$ 81	$ 828	$ 311

Debt - Narrative (Details)

Debt - Narrative (Details) - USD ($)	1 Months Ended
	Apr. 30, 2021	Mar. 30, 2020	Sep. 30, 2021	Apr. 01, 2021
Line of Credit Facility [Line Items]
Prepaid loan fees			$ 1,004,000
Revolving credit facility | Line of credit | Credit Agreement March 30, 2020
Line of Credit Facility [Line Items]
Debt instrument term (in years)		3 years
Maximum borrowing capacity		$ 50,000,000
Long-term line of credit			$ 0
Revolving credit facility | Line of credit | Credit Agreement April 2021
Line of Credit Facility [Line Items]
Debt instrument term (in years)	3 years
Maximum borrowing capacity				$ 100,000,000

Subsequent Events (Details)

Subsequent Events (Details) - Subsequent Event	Nov. 04, 2021ft²renewalOption
Subsequent Event [Line Items]
Area of rentable space (in sq feet) | ft²	120,000
Lease term (in years)	15 years
Number of renewal options | renewalOption	1
Renewal notice period (in months)	18 months
Minimum
Subsequent Event [Line Items]
Renewal term (in years)	5 years
Maximum
Subsequent Event [Line Items]
Renewal term (in years)	10 years

Uncategorized Items - you-20210

Label	Element	Value
Retained Earnings [Member]
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	us-gaap_ProfitLoss	$ (2,004,000)
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	us-gaap_ProfitLoss	(33,720,000)
Noncontrolling Interest [Member]
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	us-gaap_ProfitLoss	(2,375,000)
Parent [Member]
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	us-gaap_ProfitLoss	(2,004,000)
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	us-gaap_ProfitLoss	$ (33,720,000)