Emerald Holding (EEX) 10-Q 7 Aug 24 2024 Q2 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	6 Months Ended
	Jun. 30, 2024	Aug. 05, 2024
Cover [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Jun. 30, 2024
Document Fiscal Year Focus	2024
Document Fiscal Period Focus	Q2
Trading Symbol	EEX
Entity Registrant Name	Emerald Holding, Inc.
Entity Central Index Key	0001579214
Current Fiscal Year End Date	--12-31
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Accelerated Filer
Entity Shell Company	false
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Common Stock, Shares Outstanding		203,927,001
Title of 12(b) Security	Common Stock, par value $0.01 per share
Security Exchange Name	NYSE
Entity File Number	001-38076
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	42-1775077
Entity Address, Address Line One	100 Broadway
Entity Address, Address Line Two	14th Floor
Entity Address, City or Town	New York
Entity Address, State or Province	NY
Entity Address, Postal Zip Code	10005
City Area Code	949
Local Phone Number	226-5700
Document Quarterly Report	true
Document Transition Report	false

Condensed Consolidated Balance

Condensed Consolidated Balance Sheets - USD ($) $ in Millions	Jun. 30, 2024	Dec. 31, 2023
Current assets
Cash and cash equivalents	$ 193.2	$ 204.2
Trade and other receivables, net of allowances of $1.6 million and $1.4 million as of June 30, 2024 and December 31, 2023, respectively	93.9	85.2
Prepaid expenses and other current assets	24.2	21.5
Total current assets	311.3	310.9
Noncurrent assets
Property and equipment, net	1.5	1.5
Intangible assets, net	171.4	175.1
Goodwill, net	567.5	553.9
Right-of-use lease assets	7.7	8.8
Other noncurrent assets	3.2	3.7
Total assets	1,062.6	1,053.9
Current liabilities
Accounts payable and other current liabilities	48.3	46.6
Income tax payable	0	0.2
Cancelled event liabilities	0.6	0.6
Deferred revenues	175.5	174.3
Contingent consideration	0.5	0.2
Right-of-use lease liabilities, current portion	4	4
Term loan, current portion	4.2	4.2
Total current liabilities	233.1	230.1
Noncurrent liabilities
Term loan, net of discount and deferred financing fees	398.6	398.7
Deferred tax liabilities, net	5.7	3.1
Right-of-use lease liabilities, noncurrent portion	7.2	8.9
Other noncurrent liabilities	10.4	8.5
Total liabilities	655	649.3
Commitments and contingencies (Note 13)
Stockholders’ deficit
Common stock, $0.01 par value; authorized shares at June 30, 2024 and December 31, 2023: 800,000; 203,926 and 62,915 shares issued and outstanding at June 30, 2024 and December 31, 2023, respectively	2	0.6
Additional paid-in capital	1,049.7	559.2
Accumulated deficit	(644.1)	(652.3)
Total stockholders' equity (deficit)	407.6	(92.5)
Total liabilities, redeemable convertible preferred stock and stockholders' equity (deficit)	1,062.6	1,053.9
7% Series A Redeemable Convertible Participating Preferred Stock [Member]
Redeemable convertible preferred stock
7% Series A Redeemable Convertible Participating Preferred stock, $0.01 par value; authorized shares at June 30, 2024 and December 31, 2023: 80,000; zero and 71,403 shares issued and outstanding; aggregate liquidation preference of zero and $492.6 million at June 30, 2024 and December 31, 2023, respectively	$ 0	$ 497.1

Condensed Consolidated Balanc_2

Condensed Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Millions	Jun. 30, 2024	Dec. 31, 2023
Allowance - trade and other receivables, current	$ 1.6	$ 1.4
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	800,000,000	800,000,000
Common stock, shares issued	203,926,000	62,915,000
Common stock, shares outstanding	203,926,000	62,915,000
7% Series A Redeemable Convertible Participating Preferred Stock [Member]
Temporary equity, par value	$ 0.01	$ 0.01
Temporary equity, shares authorized	80,000,000	80,000,000
Temporary equity, shares issued	0	71,403,000
Temporary equity, shares outstanding	0	71,403,000
Temporary equity, liquidation preference	$ 0	$ 492.6

Condensed Consolidated Statemen

Condensed Consolidated Statements of (Loss) Income and Comprehensive (Loss) Income (unaudited) - USD ($) shares in Thousands, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Income Statement [Abstract]
Revenues	$ 86	$ 86.5	$ 219.4	$ 208.8
Other income, net	0	0	1	0
Cost of revenues	33.1	32.8	80.6	76
Selling, general and administrative expense	39.5	41.8	95	90.6
Depreciation and amortization expense	7	12.9	14.1	26.4
Operating income (loss)	6.4	(1)	30.7	15.8
Interest expense	12	11.4	24.1	19.4
Interest income	2.1	2.3	4.4	3.4
Loss on extinguishment of debt	0	2.3	0	2.3
Other expense	0	0.1	0	0.2
(Loss) income before income taxes	(3.5)	(12.5)	11	(2.7)
(Benefit from) provision for income taxes	(0.7)	(4.4)	2.8	(1.7)
Net (loss) income and comprehensive (loss) income attributable to Emerald Holding, Inc.	(2.8)	(8.1)	8.2	(1)
Accretion to redemption value of redeemable convertible preferred stock	(2)	(10.4)	(12.7)	(20.5)
Net loss and comprehensive loss attributable to Emerald Holding, Inc.common stockholders	$ (4.8)	$ (18.5)	$ (4.5)	$ (21.5)
Basic loss per share	$ (0.03)	$ (0.29)	$ (0.04)	$ (0.33)
Diluted loss per share	$ (0.03)	$ (0.29)	$ (0.04)	$ (0.33)
Basic weighted average common shares outstanding	155,915	62,868	109,477	65,048
Diluted weighted average common shares outstanding	155,915	62,868	109,477	65,048

Condensed Consolidated Statem_2

Condensed Consolidated Statements of Redeemable Convertible Preferred Stock and Stockholders' Equity (Deficit) - USD ($) shares in Thousands, $ in Millions	Total	Redeemable Convertible Preferred Stock [Member]	Common Stock [Member]	Additional Paid-in Capital [Member]	Accumulated Deficit [Member]
Balances at Dec. 31, 2022	$ (33.1)		$ 0.7	$ 610.3	$ (644.1)
Balances, shares at Dec. 31, 2022			67,588
Temporary Equity, Balances at Dec. 31, 2022		$ 472.4
Temporary Equity, Balances, shares at Dec. 31, 2022		71,417
Stock-based compensation	3.9			3.9
Stock-based compensation, shares			307
Issuance of common stock under equity plans, shares			14
Accretion to redemption value of redeemable convertible preferred stock	(20.5)			(20.5)
Temporary Equity, Accretion to redemption value of redeemable convertible preferred stock		$ 20.5
Temporary Equity, Redeemable convertible preferred stock conversion, shares		(14)
Temporary Equity Redeemable convertible preferred stock conversion		$ (0.1)
Redeemable convertible preferred stock conversion	0.1			0.1
Redeemable convertible preferred stock conversion, shares			26
Repurchase of common stock	(16.9)		$ (0.1)	(16.8)
Repurchase of common stock, shares			(5,064)
Net income (loss) and comprehensive income	(1)				(1)
Balances at Jun. 30, 2023	(67.5)		$ 0.6	577	(645.1)
Balances, shares at Jun. 30, 2023			62,871
Temporary Equity, Balances at Jun. 30, 2023		$ 492.8
Temporary Equity, Balances, shares at Jun. 30, 2023		71,403
Balances at Mar. 31, 2023	(50.9)		$ 0.6	585.5	(637)
Balances, shares at Mar. 31, 2023			62,845
Temporary Equity, Balances at Mar. 31, 2023		$ 482.5
Temporary Equity, Balances, shares at Mar. 31, 2023		71,417
Stock-based compensation	1.8			1.8
Accretion to redemption value of redeemable convertible preferred stock	(10.4)			(10.4)
Temporary Equity, Accretion to redemption value of redeemable convertible preferred stock		$ 10.4
Temporary Equity, Redeemable convertible preferred stock conversion, shares		(14)
Temporary Equity Redeemable convertible preferred stock conversion		$ (0.1)
Redeemable convertible preferred stock conversion	0.1			0.1
Redeemable convertible preferred stock conversion, shares			26
Net income (loss) and comprehensive income	(8.1)				(8.1)
Balances at Jun. 30, 2023	(67.5)		$ 0.6	577	(645.1)
Balances, shares at Jun. 30, 2023			62,871
Temporary Equity, Balances at Jun. 30, 2023		$ 492.8
Temporary Equity, Balances, shares at Jun. 30, 2023		71,403
Balances at Dec. 31, 2023	(92.5)		$ 0.6	559.2	(652.3)
Balances, shares at Dec. 31, 2023			62,915
Temporary Equity, Balances at Dec. 31, 2023		$ 497.1
Temporary Equity, Balances, shares at Dec. 31, 2023		71,403
Stock-based compensation	3.9			3.9
Issuance of common stock under equity plans	1.3			1.3
Issuance of common stock under equity plans, shares			524
Accretion to redemption value of redeemable convertible preferred stock	(12.7)			(12.7)
Temporary Equity, Accretion to redemption value of redeemable convertible preferred stock		$ 12.7
Temporary Equity, Redeemable convertible preferred stock conversion, shares		(71,403)
Temporary Equity Redeemable convertible preferred stock conversion		$ (501.2)
Redeemable convertible preferred stock conversion	501.2		$ 1.4	499.8
Redeemable convertible preferred stock conversion, shares			140,782
Repurchase of common stock	(1.8)			(1.8)
Repurchase of common stock, shares			(295)
Preferred stock cash dividend		(8.6)
Net income (loss) and comprehensive income	8.2				8.2
Balances at Jun. 30, 2024	407.6		$ 2	1,049.7	(644.1)
Balances, shares at Jun. 30, 2024			203,926
Balances at Mar. 31, 2024	(90.7)		$ 0.6	550	(641.3)
Balances, shares at Mar. 31, 2024			63,053
Temporary Equity, Balances at Mar. 31, 2024		$ 499.2
Temporary Equity, Balances, shares at Mar. 31, 2024		71,403
Stock-based compensation	1.5			1.5
Issuance of common stock under equity plans	0.4			0.4
Issuance of common stock under equity plans, shares			91
Accretion to redemption value of redeemable convertible preferred stock	(2)			(2)
Temporary Equity, Accretion to redemption value of redeemable convertible preferred stock		$ 2
Temporary Equity, Redeemable convertible preferred stock conversion, shares		(71,403)
Temporary Equity Redeemable convertible preferred stock conversion		$ (501.2)
Redeemable convertible preferred stock conversion	501.2		$ 1.4	499.8
Redeemable convertible preferred stock conversion, shares			140,782
Net income (loss) and comprehensive income	(2.8)				(2.8)
Balances at Jun. 30, 2024	$ 407.6		$ 2	$ 1,049.7	$ (644.1)
Balances, shares at Jun. 30, 2024			203,926

Condensed Consolidated Statem_3

Condensed Consolidated Statements of Cash Flows - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023
Operating activities
Net income (loss)	$ 8.2	$ (1)
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Stock-based compensation	4	3.9
Allowance for credit losses	0.3	0.2
Depreciation and amortization	14.1	26.4
Loss on disposal of fixed assets	0	0.2
Non-cash operating lease expense	1.1	1.3
Amortization of deferred financing fees and debt discount	2.2	0.9
Loss on extinguishment of debt	0	2.3
Deferred income taxes	2.5	0.8
Remeasurement of contingent consideration	(0.7)	(0.6)
Changes in operating assets and liabilities, net of effect of businesses acquired:
Trade and other receivables	(7.7)	(15.5)
Prepaid expenses and other current assets	3.5	4.5
Other noncurrent assets	0.3	0.1
Accounts payable and other current liabilities	0.9	(7.6)
Cancelled event liabilities	0	(0.6)
Contingent consideration	(0.2)	0
Income tax payable	(5.1)	(4.2)
Deferred revenues	(4.1)	7.5
Operating lease liabilities	(1.7)	(2.1)
Other noncurrent liabilities	(0.5)	(0.3)
Net cash provided by operating activities	17.1	16.2
Investing activities
Acquisition of businesses, net of cash acquired	(12.7)	(9.5)
Working capital adjustment receivable from seller	1	0
Purchases of property and equipment	(0.5)	(0.5)
Purchases of intangible assets	(4.7)	(5.9)
Net cash used in investing activities	(16.9)	(15.9)
Financing activities
Payment of contingent consideration for acquisition of businesses	(0.2)	(3.7)
Repayment of principal on Amended and Restated Term Loan Facility	0	(239.4)
Proceeds from Extended Term Loan Facility	0	239.4
Repayment of principal on Extended Term Loan Facility	(2.1)	0
Original issuance discount	0	(12.5)
Fees paid for debt issuance	0	(1.6)
Repurchase of common stock	(1.8)	(16.9)
Preferred stock cash dividend	(8.6)	0
Proceeds from issuance of common stock under equity plans	1.3	0
Net cash used in financing activities	(11.2)	(34.7)
Net decrease in cash and cash equivalents	(11)	(34.4)
Cash and cash equivalents
Beginning of period	204.2	239.1
End of period	193.2	204.7
Supplemental disclosure of non-cash investing and financing activities:
Unpaid purchases of intangible assets	0.7	0
Conversion of redeemable convertible preferred stock to common stock	501.2	0
Amended and Restated Term Loan Facility	0	(175.9)
Extended Term Loan Facility	$ 0	$ 175.9

Insider Trading Arrangements

Insider Trading Arrangements	3 Months Ended
	Jun. 30, 2024
Trading Arrangements, by Individual
Rule 10b5-1 Arrangement Adopted	false
Non-Rule 10b5-1 Arrangement Adopted	false
Rule 10b5-1 Arrangement Terminated	false
Non-Rule 10b5-1 Arrangement Terminated	false
Rule 10b5-1 Arr Modified	false
Non-Rule 10b5-1 Arr Modified	false

Basis of Presentation

Basis of Presentation	6 Months Ended
	Jun. 30, 2024
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Basis of Presentation	1. Basis of Presentation The unaudited condensed consolidated financial statements include the operations of Emerald Holding, Inc. (the “Company” or “Emerald”) and its wholly-owned subsidiaries. These unaudited condensed consolidated financial statements are presented in conformity with accounting principles generally accepted in the United States of America (“GAAP”) for interim financial information and with the instructions to Form 10-Q and Article 10 of Regulation S-X of the SEC for Interim Reporting. All intercompany transactions, accounts and profits/losses, if any, have been eliminated in the unaudited condensed consolidated financial statements. In the opinion of management, all recurring adjustments considered necessary for a fair statement of results for the interim period have been included. These unaudited condensed consolidated financial statements do not include all disclosures required by GAAP, and therefore, these unaudited condensed consolidated financial statements should be read in conjunction with the more detailed audited consolidated financial statements for the year ended December 31, 2023. The December 31, 2023 condensed consolidated balance sheet was derived from the Company’s audited consolidated financial statements for the year ended December 31, 2023. The results for the three and six months ended June 30, 2024 are not necessarily indicative of results to be expected for a full year, any other interim periods or any future year or period.

Recent Accounting Pronouncement

Recent Accounting Pronouncements	6 Months Ended
	Jun. 30, 2024
Accounting Changes and Error Corrections [Abstract]
Recent Accounting Pronouncements	2. Recent Accounting Pronouncements Recently Issued Accounting Pronouncements In November 2023, the FASB issued ASU 2023-07, Segment Reporting (Topic 280) Improvements to Reportable Segment Disclosures (“ASU 2023-07”). ASU 2023-07 requires disclosure of significant segment expenses that are regularly provided to the chief operating decision maker and included within the segment measure of profit or loss. The standard is required to be applied retrospectively to prior periods presented, based on the significant segment expense categories identified and disclosed in the period of adoption. ASU 2023-07 is effective for fiscal years beginning after December 15, 2023, and interim periods within fiscal years beginning after December 15, 2024. Early adoption is permitted. The Company is currently evaluating the impact the adoption will have on the disclosures within the Company’s consolidated financial statements. In December 2023, the FASB issued ASU 2023-09, Income Taxes (Topic 740): Improvements to Income Tax Disclosures (“ASU 2023-09”). ASU 2023-09 requires disclosure of disaggregated information about a reporting entity’s effective tax rate reconciliation as well as information on income taxes paid. The standard is intended to benefit investors by providing more detailed income tax disclosures that would be useful in making capital allocation decisions and applies to all entities subject to income taxes. The standard should be applied on a prospective basis although retrospective application is permitted. ASU 2023-09 is effective for fiscal years beginning after December 15, 2024. Early adoption is permitted. The Company is currently evaluating the impact the adoption will have on the disclosures within the Company’s consolidated financial statements. There have been no other new accounting pronouncements that are expected to have a significant impact on the Company’s condensed consolidated financial statements or notes thereto.

Revenues

Revenues	6 Months Ended
	Jun. 30, 2024
Revenue from Contract with Customer [Abstract]
Revenues	3. Revenues Revenue Recognition and Deferred Revenue Revenue is recognized as the customer receives the benefit of the promised services and performance obligations are satisfied. Revenue is recognized at an amount that reflects the consideration the Company expects to receive in exchange for those services. Customers generally receive the benefit of the Company’s services upon the staging of each trade show or conference event and over the subscription period for access to the Company’s subscription software and services. Fees are typically invoiced and collected in-full prior to the trade show or event. A significant portion of the Company’s annual revenue is generated from the Connections segment, primarily related to the production of trade shows and conference events (collectively, “trade shows”), including booth space sales, registration fees and sponsorship fees. The Company recognizes revenue in the period the trade show occurs. Trade show and other events revenues represented approximately 87.2 % and 87.4 % of total revenues for the three months ended June 30, 2024 and 2023, respectively. Trade show and other events revenues represented approximately 90.4 % and 89.9 % of total revenues for the six months ended June 30, 2024 and 2023, respectively. Content revenues primarily consist of advertising sales for digital products and industry publications that complement the event properties, custom content agency revenues and subscription fees for educational and e-learning services. Advertising sales and custom content revenues are recognized in the period in which the custom content and digital products are provided or publications are issued. Subscription fees for educational and e-learning services are billed and collected at the subscription date. Typically, the fees charged are collected after the custom content and digital products are delivered or publications are issued. Commerce revenues primarily consist of software-as-a-service subscription revenue, implementation fees and professional services. Fees associated with implementation are deferred and recognized over the expected customer life, which is four years . Subscription revenue is generally recognized over the term of the contract. Deferred revenues generally consist of booth space sales, registration fees and sponsorship fees that are invoiced prior to a trade show, as well as upfront payments for software subscription fees, professional services and implementation fees for the Company’s subscription software and services. Current deferred revenues were $ 175.5 million as of June 30, 2024 and are reported as deferred revenues on the condensed consolidated balance sheets. Long-term deferred revenues as of June 30, 2024 were $ 0.4 million and are reported as other noncurrent liabilities on the condensed consolidated balance sheets. Current and long-term deferred revenues as of December 31, 2023 were $ 174.3 million and $ 0.9 million, respectively. During the six months ended June 30, 2024 , the Company recognized revenues of $ 135.3 million from amounts included in deferred revenue at the beginning of the respective period. The accounts receivable and deferred revenue balances related to cancelled events are classified as cancelled event liabilities in the condensed consolidated balance sheets as the total amount represents balances which are expected to be refunded to customers. As of June 30, 2024, cancelled event liabilities of $ 0.6 million represents $ 0.5 million of deferred revenues for cancelled trade shows and $ 0.1 million of related accounts receivable credits reclassified to cancelled event liabilities in the condensed consolidated balance sheets. As of December 31, 2023, cancelled event liabilities of $ 0.6 million represented $ 0.5 million of deferred revenues for cancelled trade shows and $ 0.1 million of related accounts receivable credits reclassified to cancelled event liabilities in the condensed consolidated balance sheets. Performance Obligations For the Company’s trade shows and other events, sales are deferred and recognized when performance obligations under the terms of a contract with the Company’s customers are satisfied, which is typically at the completion of a show or event. Revenue is measured as the amount of consideration the Company earns upon completion of its performance obligations. For the Company’s commerce offerings, the Company may enter into contracts with customers that include multiple performance obligations, which are generally capable of being distinct. Fees associated with implementation and related professional services are deferred and recognized over the expected customer life, which is four years . Subscription revenue is recognized over the term of the contract. The Company’s contracts associated with subscription software and services are generally three-year terms with one-year renewals following the initial three-year term. For the Company’s content offerings, revenues are deferred and recognized when performance obligations under the terms of a contract with the Company’s customers are satisfied. This generally occurs in the period in which the publications are issued. Revenue is measured as the amount of consideration the Company earns upon completion of its performance obligations. The Company applies a practical expedient which allows the exclusion of disclosure information regarding remaining performance obligations if the performance obligation is part of a contract that has an expected duration of one year or less. The Company’s performance obligations greater than one year were $ 0.4 million as of June 30, 2024. Disaggregation of Revenue The following table represents revenues disaggregated by type: Three Months Ended Six Months Ended 2024 2023 2024 2023 Revenues (in millions) Connections $ 75.0 $ 75.6 $ 198.4 $ 187.8 Content 5.9 6.1 10.6 11.6 Commerce 5.1 4.8 10.4 9.4 Total revenues $ 86.0 $ 86.5 $ 219.4 $ 208.8 Contract Balances The Company’s contract assets are primarily sales commissions incurred in connection with the Company’s subscription software and services, which are expensed over the expected customer relationship period. As of June 30, 2024, the Company does not have material contract assets. Contract liabilities generally consist of booth space sales, registration fees, sponsorship fees that are collected prior to the trade show or other event and subscription revenue, implementation fees and professional services associated with the Company’s subscription software and services. Contract liabilities less than one year from the date of the performance obligation are reported on the condensed consolidated balance sheets as deferred revenues. Contract liabilities greater than one year from the date of the performance obligation are reported on the condensed consolidated balance sheets in other noncurrent liabilities. The Company’s sales commission costs incurred in connection with sales of booth space, registration fees and sponsorship fees at the Company’s trade shows and other events and with sales of advertising for publications are short term, as sales typically begin up to one year prior to the date of the trade shows and other events. The Company expects the period benefited by each commission to be less than one year , and as a result, the Company expenses sales commissions associated with trade shows, other events and other marketing services as incurred. Sales commissions are reported on the condensed consolidated statements of (loss) income and comprehensive (loss) income as selling, general and administrative expense. Accounts Receivable The Company monitors collections and payments from its customers and maintains an allowance based upon applying an expected credit loss rate to receivables based on the historical loss rate from similar higher risk customers adjusted for current conditions, including any specific customer collection issues identified, and forecasts of economic conditions. Delinquent account balances are written off after management has determined that the likelihood of collection is remote. The activities in this account, including the current-period provision for expected credit losses for the three and six months ended June 30, 2024 , were $ 0.2 million and $ 0.4 million, respectively, and the activities for the three and six months ended June 30, 2023 , were $ 0.1 million and $ 0.2 million, respectively. Account balances written off during the three and six months ended June 30, 2024 , were $ 0.1 million and $ 0.2 million, respectively. Account balances written off during the three and six months ended June 30, 2023 , were zero and $ 0.2 million, respectively.

Business Acquisitions

Business Acquisitions	6 Months Ended
	Jun. 30, 2024
Business Combinations [Abstract]
Business Acquisitions	4. Business Acquisitions 2024 Acquisitions The Futurist On May 7, 2024, the Company executed an asset purchase agreement to acquire the assets and assume certain liabilities of the Blockchain Futurist Conference and its associated experiences (collectively known as the “Futurist”). The total estimated purchase price of $ 1.9 million included an initial cash payment of $ 1.1 million and contingent consideration with an estimated fair value of $ 0.9 million. The acquisition was financed with cash from operations. The Company recorded goodwill of $ 1.8 million in connection with the Futurist acquisition. Revenue and net income from the acquisition were not material to the three and six months ended June 30, 2024. Hotel Interactive In furtherance of the Company’s portfolio optimization strategy to enhance its best-in-class hosted buyer platform, the Company executed an asset purchase agreement on January 19, 2024 to acquire all the assets and assume certain liabilities of the business known as Hotel Interactive. Hotel Interactive produces hosted buyer events in the hotel, hospitality, food service and healthcare and senior living space sectors. The total estimated purchase price of $ 13.5 million included an initial cash payment of $ 11.6 million and contingent consideration with an estimated fair value of $ 2.7 million, as well as a $ 0.8 million post close working capital adjustment receivable from the seller. The acquisition was financed with cash from operations. During the three and six months ended June 30, 2024 , the Company received $ 1.0 million from the seller for certain working capital adjustments, which is recorded in investing activities in the Company’s condensed consolidated statement of cash flows. The preparation of the valuation required the use of significant assumptions and estimates. Critical estimates included, but were not limited to, future expected cash flows, including projected revenues and expenses, royalty rate and the applicable discount rates. These estimates were based on assumptions that the Company believes to be reasonable, however, actual results may differ from these estimates. External acquisition costs of $ 0.2 million were expensed as incurred and included in selling, general and administrative expenses in the condensed consolidated statements of (loss) income and comprehensive (loss) income. During the three and six months ended June 30, 2024 , the acquisition of Hotel Interactive generated revenue of $ 1.7 million and $ 4.5 million and net income of zero and $ 0.6 million, respectively. Goodwill was calculated as the excess of the purchase price over the estimated fair values of acquired assets and intangible assets offset by liabilities acquired, and is primarily attributable to the future economic benefits from synergies expected to arise due to certain cost savings, operating efficiencies and other strategic benefits. Substantially all of the goodwill recorded is expected to be deductible for income tax purposes. The primary tasks that are required to be completed to finalize the valuation of assets and liabilities acquired include validation of business level forecasts, customer attrition rates and acquired working capital balances. The contingent consideration liability related to the acquisition of Hotel Interactive consists of two potential payments, the interim payment and the final payment. The interim payment is based on a range of multiples, which are dependent upon the acquisition’s compounded annual EBITDA growth rate from 2023 to 2024, being applied to the 2024 EBITDA growth from a specified EBITDA target. The interim payment will be settled in the second quarter of 2025. The final payment is based on a range of multiples, which are dependent upon the acquisition’s 3 -year compounded annual EBITDA growth rate from 2023 to 2026, being applied to the average annual EBITDA growth in calendar years 2025 and 2026, from a specified EBITDA target, less the interim payment. The final payment will be settled in the second quarter of 2027. Identified intangible assets associated with Hotel Interactive included trade name and customer relationship intangible assets of $ 1.6 million and $ 2.5 million, respectively. The weighted-average amortization period of the trade name intangible assets acquired was 10.0 years. The weighted-average amortization period of the customer relationship intangible assets acquired was 4.0 years. There is no assumed residual value for the acquired trade name and customer relationship intangible assets. The following table summarizes the preliminary fair value of the acquired assets and liabilities on the acquisition date: (in millions) January 19, Trade and other receivables $ 1.2 Prepaid expenses and other current assets 1.1 Goodwill 11.8 Intangible assets 4.1 Deferred revenues ( 4.7 ) Purchase price, including working capital adjustment $ 13.5 Supplemental Pro-Forma Information Supplemental information on an unaudited pro-forma basis is reflected as if the 2023 and 2024 acquisitions had occurred at the beginning of 2023, after giving effect to certain pro-forma adjustments primarily related to the amortization of acquired intangible assets and interest expense. The unaudited pro-forma supplemental information is based on estimates and assumptions that the Company believes are reasonable and reflects amortization of intangible assets as a result of the acquisition. The supplemental unaudited pro-forma financial information is presented for comparative purposes only. It is not necessarily indicative of what the Company’s financial position or results of operations actually would have been had the Company completed the acquisition at the dates indicated, nor is it intended to project the future financial position or operating results of the combined Company. Further, the supplemental pro-forma information has not been adjusted for show timing differences or discontinued events. Three Months Ended Six Months Ended 2023 2023 (in millions) (Unaudited) Pro-forma revenues (1)(2) Hotel Interactive $ 1.8 $ 3.9 Emerald revenue 86.5 208.8 Total pro-forma revenues $ 88.3 $ 212.7 Pro-forma net (loss) income (2) Hotel Interactive $ 0.1 $ 0.2 Lodestone — ( 0.3 ) Emerald net loss ( 8.1 ) ( 1.0 ) Total pro-forma net (loss) income $ ( 8.0 ) $ ( 1.1 ) (1) Pro-forma revenues from the Lodestone acquisition were not material to the three months ended March 31, 2023. (2) Pro-forma revenues and net loss from the Futurist acquisition were not material to the three and six months ended June 30, 2023.

Property and Equipment

Property and Equipment	6 Months Ended
	Jun. 30, 2024
Property, Plant and Equipment [Abstract]
Property and Equipment	5. Property and Equipment Property and equipment, net, consisted of the following: (in millions) June 30, December 31, Furniture, equipment and other $ 5.5 $ 5.2 Leasehold improvements 1.2 1.0 6.7 6.2 Less: Accumulated depreciation ( 5.2 ) ( 4.7 ) Property and equipment, net $ 1.5 $ 1.5 Depreciation expense related to property and equipment for the three and six months ended June 30, 2024 was $ 0.3 million and $ 0.5 million, respectively. Depreciation expense related to property and equipment for the three and six months ended June 30, 2023 was $ 0.2 million and $ 0.5 million, respectively. There was no loss on disposal of fixed assets for the three and six months ended June 30, 2024 . Loss on disposal of fixed assets was zero and $ 0.2 million, respectively, for the three and six months ended June 30, 2023 .

Intangible Assets and Goodwill

Intangible Assets and Goodwill	6 Months Ended
	Jun. 30, 2024
Goodwill and Intangible Assets Disclosure [Abstract]
Intangible Assets and Goodwill	6. Intangible Assets and Goodwill Intangible Assets, Net Intangible assets, net consisted of the following: (in millions) Indefinite- Customer Definite- Acquired Acquired Computer Capitalized Total Gross carrying $ 52.6 $ 368.2 $ 92.8 $ 8.4 $ 2.6 $ 42.3 $ 1.6 $ 568.5 Accumulated amortization — ( 343.5 ) ( 25.4 ) ( 5.1 ) ( 1.2 ) ( 21.9 ) — ( 397.1 ) Net carrying $ 52.6 $ 24.7 $ 67.4 $ 3.3 $ 1.4 $ 20.4 $ 1.6 $ 171.4 Gross carrying $ 52.6 $ 365.4 $ 91.1 $ 8.4 $ 2.6 $ 36.9 $ 1.6 $ 558.6 Accumulated amortization — ( 336.7 ) ( 22.6 ) ( 4.7 ) ( 1.0 ) ( 18.5 ) — ( 383.5 ) Net carrying $ 52.6 $ 28.7 $ 68.5 $ 3.7 $ 1.6 $ 18.4 $ 1.6 $ 175.1 Amortization expense for the three and six months ended June 30, 2024 was $ 6.7 million and $ 13.6 million, respectively. Amortization expense for the three and six months ended June 30, 2023 was $ 12.7 million and $ 25.9 million, respectively. Impairment of Indefinite-Lived Intangible Assets During the three and six months ended June 30, 2024 and 2023, there were no triggering events or changes in circumstances that would indicate the carrying value of the Company’s indefinite-lived intangible assets was impaired. As such, no quantitative assessment for impairment was required during the first and second quarters of 2024 and 2023. Impairment of Long-Lived Assets Other than Goodwill and Indefinite-Lived Intangible Assets During the three and six months ended June 30, 2024 and 2023, there were no triggering events or changes in circumstances that would indicate the carrying value of the Company’s long-lived assets other than goodwill are not recoverable. As such, no quantitative assessment for impairment was required during the first and second quarters of 2024 and 2023. Goodwill The table below summarizes the changes in the carrying amount of goodwill for each reportable segment: Reportable Segment (in millions) Connections All Other Total Balance at December 31, 2023 $ 518.3 $ 35.6 $ 553.9 Acquired goodwill 13.6 — 13.6 Balance at June 30, 2024 $ 531.9 $ 35.6 $ 567.5 Impairment of Goodwill During the three and six months ended June 30, 2024 and 2023, management determined there were no triggering events or changes in circumstances that would indicate the carrying value of the Company’s goodwill is not recoverable. As such, no quantitative assessment for impairment was required during the first and second quarters of 2024 and 2023. No goodwill impairment charges were recorded during each of the three and six months ended June 30, 2024 and 2023 .

Debt

Debt	6 Months Ended
	Jun. 30, 2024
Debt Disclosure [Abstract]
Debt	7. Debt Debt is comprised of the following indebtedness to various lenders: (in millions) June 30, December 31, Extended Term Loan Facility, with 5.10 % as of June 30, 2024, 10.44 % and 10.46 % 2026 , net (a) $ 402.8 $ 402.9 Less: Current maturities 4.2 4.2 Long-term debt, net of current maturities, debt $ 398.6 $ 398.7 (a) The Extended Term Loan Facility (as defined below), scheduled to mature on May 22, 2026 , was recorded net of unamortized discount of $ 7.2 million and net of unamortized deferred financing fees of $ 1.2 million as of June 30, 2024. The Extended Term Loan Facility as of December 31, 2023 was recorded net of unamortized discount of $ 8.9 million and net of unamortized deferred financing fees of $ 1.5 million . The fair market value of the Company’s debt under the Extended Term Loan Facility was $ 413.1 million as of June 30, 2024 . Term Loan Facility On June 12, 2023, (the “Term Loan Amendment Effective Date”) Emerald X, Inc. (“Emerald X”), a wholly-owned subsidiary of the Company, entered into a Sixth Amendment (the “Term Loan Amendment”) to its Amended and Restated Credit Agreement by and among Emerald X, as Borrower, the guarantors party thereto, the lenders party thereto and Bank of America, N.A., as administrative agent, which amends that certain Amended and Restated Credit Agreement, dated as of May 22, 2017 (as amended from time to time, the “Amended and Restated Credit Agreement”). The Term Loan Amendment extended the maturity of the term loans outstanding under the Amended and Restated Credit Agreement (such term loan facility, as effect prior to the Term Loan Amendment Effective Date, the “Amended and Restated Term Loan Facility”, and as extended by the Term Loan Amendment, the “Extended Term Loan Facility”) from May 22, 2024 to May 22, 2026 . The aggregate outstanding principal amount of the Extended Term Loan Facility was approximately $ 415.3 million as of the Term Loan Amendment Effective Date . The loss on extinguishment of debt of $ 2.3 million for the three and six months ended June 30, 2023 , included $ 2.1 million of original issuance discount (“OID”) related to the Extended Term Loan Facility and $ 0.2 million of previously capitalized OID and debt issuance costs which were allocated to lenders whose balances were extinguished. The Term Loan Amendment replaced the interest rate applicable to the term loans with a rate equal to, at the option of Emerald X, (i) the Term Secured Overnight Financing Rate (“Term SOFR”) plus 5.00 % per annum plus a credit spread adjustment of 0.10 % per annum or (ii) an alternate base rate (“ABR”) plus 4.00 % per annum. Prior to the Term Loan Amendment, the interest rate applicable to the term loans was a rate equal to, at the option of Emerald X, (i) LIBOR plus 2.75 % or 2.50 % per annum, depending on Emerald X’s first lien net leverage ratio or (ii) ABR plus 1.75 % or 1.50 % per annum, depending on Emerald X’s first lien net leverage ratio. The effective interest rate at June 30, 2024 and December 31, 2023 was 11.65 % and 11.66 %, respectively. Revolving Credit Facility On February 2, 2023, Emerald X entered into a Fifth Amendment (the “RCF Amendment”) to its Amended and Restated Credit Agreement. The RCF Amendment increased the aggregate amount of all revolving commitments under the Amended and Restated Credit Agreement from $ 100.4 million to $ 110.0 million (such facility, as amended by the RCF Amendment, the “Extended Revolving Credit Facility”). The increased revolving commitments have the same terms as the previously existing revolving commitments. The RCF Amendment did not change any other material terms of the Amended and Restated Credit Agreement. Emerald X paid $ 0.6 million in financing fees related to the RCF Amendment during the first quarter of 2023. Emerald X had no outstanding borrowings under the revolving portion of its Amended and Restated Credit Agreement as of June 30, 2024 and December 31, 2023 . Emerald X had $ 1.0 million in stand-by letters of credit outstanding under the revolving portion of its Amended and Restated Credit Agreement as of June 30, 2024 and December 31, 2023. During the three and six months ended June 30, 2024 and 2023 , revolving borrowings under the Amended and Restated Credit Agreement were subject to an interest rate equal to Term SOFR plus 2.25 % or ABR plus 1.25 %. Interest Expense Interest expense reported in the condensed consolidated statements of (loss) income and comprehensive (loss) income consists of the following: Three Months Ended Six Months Ended (in millions) 2024 2023 2024 2023 Extended Term Loan Facility $ 10.8 $ 2.2 $ 21.7 $ 2.2 Amended and Restated Term Loan Facility — 6.4 — 13.9 Term Loan Amendment third party fees — 2.1 — 2.1 Non-cash interest for amortization of debt discount 1.1 0.5 2.2 0.9 Revolving credit facility interest and commitment fees 0.1 0.2 0.2 0.3 Total interest expense $ 12.0 $ 11.4 $ 24.1 $ 19.4 Covenants The Extended Revolving Credit Facility contains a financial covenant requiring Emerald X to comply with a 5.50 to 1.00 Total First Lien Net Leverage Ratio, which is defined as the ratio of Consolidated Total Debt (as defined in the Amended Credit Agreement and Amended and Restated Credit Agreement, collectively known as the “Amended and Restated Senior Secured Credit Facilities” ) secured on a first lien basis, net of unrestricted cash and cash equivalents to trailing four-quarter Consolidated EBITDA (as defined in the Amended and Restated Senior Secured Credit Facilities). This financial covenant is tested on the last day of each quarter only if the aggregate amount of revolving loans, swingline loans and letters of credit outstanding under the Extended Revolving Credit Facility (net of up to $ 10.0 million of outstanding letters of credit) exceeds 35 % of the total revolving commitments thereunder. As of June 30, 2024 , the Company was not required to test this financial covenant and Emerald X was in compliance with all covenants under the Amended and Restated Senior Secured Credit Facilities.

Fair Value Measurements and Fin

Fair Value Measurements and Financial Risk	6 Months Ended
	Jun. 30, 2024
Fair Value Disclosures [Abstract]
Fair Value Measurements and Financial Risk	8. Fair Value Measurements and Financial Risk As of June 30, 2024, the Company’s assets and liabilities measured at fair value on a recurring basis are categorized in the table below: (in millions) Total Level 1 Level 2 Level 3 Assets Cash and cash equivalents $ 33.7 $ 33.7 $ — $ — Money market mutual funds (a) 159.5 159.5 — — Total assets at fair value $ 193.2 $ 193.2 $ — $ — Liabilities Market-based share awards liability (b) $ 0.8 $ — $ — $ 0.8 Contingent consideration (b) 9.6 — — 9.6 Total liabilities at fair value $ 10.4 $ — $ — $ 10.4 (a) The Company’s money market mutual funds of $ 159.5 million as of June 30, 2024 are included within cash and cash equivalents in the condensed consolidated balance sheets. The money market mutual funds are traded in active markets and quoted in broker or dealer quotations and are classified as Level 1 assets. The fair value of the Company’s money market mutual funds is based on unadjusted quoted prices on the reporting date. (b) The market-based share awards liability of $ 0.8 million as of June 30, 2024 is included within other noncurrent liabilities in the condensed consolidated balance sheet. The fair value of the Company’s market-based share awards and contingent consideration are derived from valuation techniques in which one or more significant inputs are unobservable, including the Company’s own assumptions. Contingent consideration of $ 0.5 million as of June 30, 2024 is included within contingent consideration in the condensed consolidated balance sheets and contingent consideration of $ 9.1 million is included within other noncurrent liabilities in the condensed consolidated balance sheets. As of December 31, 2023, the Company’s assets and liabilities measured at fair value on a recurring basis are categorized in the table below: (in millions) Total Level 1 Level 2 Level 3 Assets Cash and cash equivalents $ 27.2 $ 27.2 $ — $ — Money market mutual funds (a) 177.0 177.0 — — Total assets at fair value $ 204.2 $ 204.2 $ — $ — Liabilities Market-based share awards liability (b) $ 0.8 $ — $ — $ 0.8 Contingent consideration (b) 6.9 — — 6.9 Total liabilities at fair value $ 7.7 $ — $ — $ 7.7 (a) The Company’s money market mutual funds are based on the closing price of these assets as of the reporting date. The fair value of the Company’s money market mutual funds is based on unadjusted quoted prices on the reporting date. The Company’s money market mutual funds are quoted in an active market and classified as Level 1 assets. (b) Included within other noncurrent liabilities in the consolidated balance sheet. The fair value of the Company’s market-based share awards and contingent consideration are derived from valuation techniques in which one or more significant inputs are unobservable, including the Company’s own assumptions. Market-based Share Awards The market-based share awards liability of $ 0.8 million as of June 30, 2024 and December 31, 2023 , entitles the grantees of these awards the right to receive shares of common stock equal to a maximum cash value of $ 9.8 million, in the aggregate, upon achievement of specified targeted share prices measured over sixty days within a ninety-day trading period. The liability is measured at fair value and is re-measured to an updated fair value at each reporting period. The Company recognizes stock-based compensation expense for awards subject to market-based vesting conditions regardless of whether it becomes probable that these conditions will be achieved. The stock-based compensation expense is included in selling, general and administrative expense in the condensed consolidated statements of (loss) income and comprehensive (loss) income. Refer to Note 10, Stock-Based Compensation , under the heading Market-based Share Awards for unobservable inputs for the market-based share award liability. Contingent Consideration The Company had contingent consideration liabilities measured at fair value related to the Company’s 2024, 2023 and 2022 acquisitions of $ 9.6 million and $ 6.9 million , as of June 30, 2024 and December 31, 2023, respectively. The contingent consideration liability of $ 9.6 million as of June 30, 2024 consists of liabilities of $ 0.5 million and $ 9.1 million that are expected to be settled in 2025 and 2027, respectively. Refer to Note 4, Business Acquisitions , for further information related to the contingent consideration related to the acquisition of Hotel Interactive, which had an initial estimated fair value of $ 2.7 million. The Company paid contingent consideration of zero and $ 0.2 million, respectively, during the three and six months ended June 30, 2024. Contingent consideration liabilities are re-measured to fair value each reporting period. As a result of the Company’s remeasurements during the first and second quarters of 2024, the Company recorded a $ 0.7 million decrease in fair value of contingent consideration, which is included in selling, general and administrative expense in the condensed consolidated statements of (loss) income and comprehensive (loss) income. The change in fair value of the Company’s contingent consideration liabilities consists of the following activity: Six Months Ended (in millions) 2024 Balance at December 31, 2023 $ 6.9 Payment of contingent consideration ( 0.2 ) Fair value remeasurement adjustments ( 0.7 ) Business acquisition 3.6 Balance at June 30, 2024 $ 9.6 The determination of the fair value of the contingent consideration liabilities could change in future periods. Any such changes in fair value will be reported in selling, general and administrative expense in the condensed consolidated statements of (loss) income and comprehensive (loss) income. Financial Risk The Company’s condensed consolidated financial statements reflect estimates and assumptions made by management that affect the reported amount of assets and liabilities.

Stockholders' Equity (Deficit)

Stockholders' Equity (Deficit) and Redeemable Convertible Preferred Stock	6 Months Ended
	Jun. 30, 2024
Temporary Equity And Stockholders Equity Note [Abstract]
Stockholders' Equity (Deficit) and Redeemable Convertible Preferred Stock	9. Stockholders’ Equity (Deficit) and Redeemable Convertible Preferred Stock Redeemable Convertible Preferred Stock On June 10, 2020, the Company entered into an investment agreement (the “Investment Agreement”) with Onex Partners V LP (“Onex”), pursuant to which the Company agreed to (i) issue to an affiliate of Onex, in a private placement transaction (the “Initial Private Placement”), 47,058,332 shares of redeemable convertible preferred stock for a purchase price of $ 5.60 per share and (ii) effect a rights offering (“Rights Offering”) to holders of its outstanding common stock of one non-transferable subscription right for each share of the Company’s common stock held, with each right entitling the holder to purchase one share of redeemable convertible preferred stock at the Series A Price per share. Onex agreed to purchase (the “Onex Backstop”) any and all redeemable convertible preferred stock not subscribed for in the Rights Offering by stockholders other than affiliates of Onex at the Series A Price per share. As a result of the Initial Private Placement and the Onex Backstop, the Company sold 69,718,919 shares of redeemable convertible preferred stock to Onex in exchange for $ 373.3 million, net of fees and expenses of $ 17.2 million. As a result of the Rights Offering, the Company issued 1,727,427 shares of redeemable convertible preferred stock in exchange for $ 9.7 million. Mandatory Conversion On April 18, 2024, the Company announced it had delivered a notice informing holders of its redeemable convertible preferred stock that it had exercised its right to mandate that all shares of the redeemable convertible preferred stock be converted to shares of the Company’s common stock. The notice was triggered by the fact that the closing share price of the Company’s common stock on the NYSE had exceeded 175 % of the conversion price for a period of 20 consecutive trading days ending with April 17, 2024. On May 2, 2024 (the “Conversion Date”), each holder of redeemable convertible preferred stock received approximately 1.9717 shares of common stock for each share of redeemable convertible preferred stock held as of the Conversion Date, in accordance with the terms of the conversion feature as described in more detail below. As a result, 71,402,607 shares of redeemable convertible preferred stock were converted into 140,781,525 shares of common stock on the Conversion Date. Cash was paid in lieu of fractional shares of common stock. Following the Conversion Date, no redeemable convertible preferred stock was outstanding, and all rights of the former holders of the redeemable convertible preferred stock were terminated. Liquidation Preference Upon liquidation or dissolution of the Company, the holders of redeemable convertible preferred stock were entitled to receive the greater of (a) the accreted liquidation preference, and (b) the amount the holders of redeemable convertible preferred stock would have received if they had converted their redeemable convertible preferred stock into common stock immediately prior to such liquidation or dissolution. Dividends Each share of redeemable convertible preferred stock accumulated dividends at a rate per annum equal to 7 % of the accreted liquidation preference, compounding quarterly, by adding to the accreted liquidation preference until July 1, 2023, and thereafter, at the Company’s option, paid either in cash or by adding to the accreted liquidation preference. On March 12, 2024, the Company’s Board of Directors approved the payment in cash of a dividend on the Company’s redeemable convertible preferred stock (such dividend, the “Preferred Stock Cash Dividend”) for the period ending March 31, 2024 to holders of record of the redeemable convertible preferred stock as of March 26, 2024. On March 28, 2024, the Company paid the Preferred Stock Cash Dividend for a total of $ 8.6 million, or $ 0.12 per share. As a result of the mandatory conversion on May 2, 2024, the dividends that accrued in the period since the Preferred Stock Cash Dividend were settled in stock as a result of the mandatory conversion on May 2, 2024. There were no cash dividends declared or paid in the first and second quarters of 2023 . During the three and six months ended June 30, 2023, the Company recorded accretion of $ 8.4 million and $ 16.7 million, respectively, with respect to the redeemable convertible preferred stock, bringing the aggregate liquidation preference to $ 492.6 million as of June 30, 2023. Holders of redeemable convertible preferred stock were also entitled to participate in and receive any dividends declared or paid on the Company’s common stock on an as-converted basis, and no dividends could have been paid to holders of common stock unless the aggregate accreted liquidation preference on the redeemable convertible preferred stock had been paid or holders of a majority of the outstanding redeemable convertible preferred stock had consented to such dividends. Conversion Features Shares of the redeemable convertible preferred stock were subject to conversion at the option of the holder into a number of shares of common stock equal to (a) the amount of the accreted liquidation preference, divided by (b) the applicable conversion price. Each share of redeemable convertible preferred stock had an initial liquidation preference of $ 5.60 and were initially convertible into approximately 1.59 shares of common stock, which is equivalent to the initial liquidation preference per share of $ 5.60 divided by the initial conversion price of $ 3.52 per share. The conversion price was subject to customary anti-dilution adjustments upon the occurrence of certain events, including downward adjustment in the event the Company issued securities, subject to exceptions, at a price that was lower than the fair market value of such securities. Redemption Features The Company had the right to redeem all, but not less than all, of the redeemable convertible preferred stock on or after June 29, 2026, or earlier upon the occurrence of certain change of control transactions. Although only Unaffiliated Directors (as defined below) could have been involved in any decisions with respect to the Company’s rights to exercise the redemption features, the holders of the redeemable convertible preferred stock controlled the majority of the votes through representation on the board of directors. Therefore, the redeemable convertible preferred stock was required to be accreted to its redemption price on the date the redemption option first became exercisable. For the three months ended June 30, 2024 and 2023, the Company recorded $ 2.0 million and $ 10.4 million in deemed dividends, respectively, and for the six months ended June 30, 2024 and 2023, the Company recorded $ 12.7 million and $ 20.5 million in deemed dividends, respectively, representing the accretion of the redeemable convertible preferred stock to the redemption value. Voting Rights Certain matters would have required the approval of holders of a majority of the redeemable convertible preferred stock, including (i) amendments to the Company’s organizational documents in a manner adverse to the redeemable convertible preferred stock, (ii) the creation or issuance of senior or parity equity securities or (iii) the issuance of any convertible indebtedness, other class of redeemable convertible preferred stock or other equity securities in each case with rights to payments or distributions in which the redeemable convertible preferred stock would not have participated on a pro-rata, as-converted basis. In addition, for so long as the redeemable convertible preferred stock represented more than 30 % of the outstanding common stock on an as-converted basis, without the approval of a majority of the directors elected by the holders of the redeemable convertible preferred stock, the Company could not (i) incur new indebtedness to the extent certain financial metrics are not satisfied, (ii) redeem or repurchase any equity securities junior to the redeemable convertible preferred stock, (iii) enter into any agreement for the acquisition or disposition of assets or businesses involving a purchase price in excess of $ 100 million, (iv) hire or terminate the chief executive officer of the Company or (v) make a voluntary filing for bankruptcy or commence a dissolution of the Company. For so long as the redeemable convertible preferred stock represented a minimum percentage of the outstanding shares of common stock on an as-converted basis as set forth in the Certificate of Designations relating to the redeemable convertible preferred stock, the holders of the redeemable convertible preferred stock had the right to appoint up to five members of the Company’s Board of Directors (the “Board”). All decisions of the Company’s Board with respect to the exercise or waiver of the Company’s rights relating to the redeemable convertible preferred stock were determined by a majority of the Company’s directors that were not employees of the Company or affiliated with Onex (“Unaffiliated Directors”), or a committee of Unaffiliated Directors. As part of the transactions contemplated by the Investment Agreement, the Company and Onex entered into a Registration Rights Agreement whereby Onex is entitled to certain demand and piggyback registration rights in respect of the redeemable convertible preferred stock and the shares of common stock issuable upon conversion thereof. Dividends There were no dividends paid or declared with respect to the Company’s common stock during the first or second quarters of 2024 and 2023, respectively. Share Repurchases October 2022 Share Repurchase Program Extension and Expansion (“October 2022 Share Repurchase Program”) On October 26, 2022, the Company’s Board approved an extension and expansion of its share repurchase program, which allowed for the repurchase of $ 20.0 million of the Company’s common stock through December 31, 2023, subject to early termination or extension by the Board. The Company repurchased zero shares and 5,064,140 shares for $ 16.9 million during the three and six months ended June 30, 2023, respectively, under this repurchase program. November 2023 Share Repurchase Program Extension and Expansion (“November 2023 Share Repurchase Program”) In November 2023, the Company’s Board approved an extension and expansion of its share repurchase program, which allows for the repurchase of $ 25.0 million of the Company’s common stock through December 31, 2024, subject to early termination or extension by the Board. The Company repurchased zero shares and 295,650 shares for $ 1.8 million during the three and six months ended June 30, 2024 , respectively, under this repurchase program. There was $ 23.2 million remaining available for share repurchases under the November 2023 Share Repurchase Program as of June 30, 2024 . The share repurchase program may be suspended or discontinued at any time without notice.

Stock-Based Compensation

Stock-Based Compensation	6 Months Ended
	Jun. 30, 2024
Share-Based Payment Arrangement [Abstract]
Stock-Based Compensation	10. Stock-Based Compensation The Company recognizes cumulative stock-based compensation expense for the portion of the awards for which the service period is probable of being satisfied. Stock-based compensation expense is included in selling, general and administrative expense in the condensed consolidated statements of (loss) income and comprehensive (loss) income. The related deferred tax benefit for stock-based compensation recognized was $ 0.3 million and $ 0.9 million for the three and six months ended June 30, 2024 , respectively. The related deferred tax benefit for stock-based compensation recognized was $ 0.5 million and $ 1.0 million for the three and six months ended June 30, 2023, respectively. 2019 Employee Stock Purchase Plan (the “ESPP”) In January 2019, the Board approved the ESPP, which was approved by the Company’s stockholders in May 2019. The ESPP requires that participating employees must be employed for at least 20 hours per week, have completed at least 6 months of service, and have compensation (as defined in the ESPP) not greater than $ 150,000 in the 12-month period before the enrollment date to be eligible to participate in the ESPP. Under the ESPP, eligible employees will receive a 10 % discount from the lesser of the closing price on the first day of the offering period and the closing price on the purchase date. The Company reserved 500,000 shares of its common stock for issuance under the ESPP. The ESPP expense recognized by the Company was no t material for the three and six months ended June 30, 2024 and 2023. Stock Options The Company recognized stock-based compensation expense relating to stock option activity of $ 1.3 million and $ 3.3 million for the three and six months ended June 30, 2024 , respectively. The Company recognized stock-based compensation expense relating to stock option activity of $ 1.6 million and $ 3.1 million for the three and six months ended June 30, 2023, respectively. Stock option activity for the six months ended June 30, 2024, was as follows: Weighted-Average Number of Exercise Price Remaining Aggregate (thousands) (years) (millions) Outstanding at December 31, 2023 19,791 $ 6.25 7.4 $ 15.7 Granted 270 6.09 Exercised ( 250 ) 5.12 Forfeited/Expired ( 1,803 ) 8.30 Outstanding at June 30, 2024 18,008 $ 6.06 6.5 $ 13.3 Exercisable at June 30, 2024 9,054 $ 7.29 5.1 $ 3.0 There was a total of $ 9.3 million unrecognized stock-based compensation expense at June 30, 2024 related to unvested stock options expected to be recognized over a weighted-average period of 2.33 years. Restricted Stock Units (“RSUs”) The Company grants RSUs that contain service conditions to certain executives and employees. The Company recognizes cumulative stock-based compensation expense for the portion of the awards for which the service period is probable of being satisfied. Stock-based compensation expense relating to RSU activity recognized in the three and six months ended June 30, 2024 was $ 0.2 million and $ 0.6 million, respectively. Stock-based compensation expense relating to RSU activity recognized in the three and six months ended June 30, 2023 was $ 0.2 million and $ 0.7 million, respectively. There was a total of $ 0.7 million of unrecognized stock-based compensation expense at June 30, 2024 related to unvested RSUs expected to be recognized over a weighted-average period of 1.2 years. RSU activity for the six months ended June 30, 2024, was as follows: (share data in thousands, except per share data) Number of Weighted Unvested balance, December 31, 2023 541 $ 5.95 Granted 91 6.59 Forfeited ( 18 ) 5.49 Vested ( 346 ) 6.35 Unvested balance, June 30, 2024 268 $ 5.71 Market-based Share Awards In January 2020, the Company granted performance-based market condition share awards to one senior executive under the 2017 Omnibus Equity Plan, which entitle this employee the right to receive shares of common stock equal to a maximum value of $ 4.9 million in the aggregate, upon achievement of specified targeted share prices measured over sixty days within a ninety-day trading period. In June 2019, the Company granted performance-based market condition share awards to one senior executive under the 2017 Omnibus Equity Plan, which entitle this employee the right to receive shares of common stock equal to a maximum value of $ 4.9 million, in the aggregate, upon achievement of specified targeted share prices measured over sixty days within a ninety-day trading period. As of June 30, 2024 , all outstanding performance-based market condition share awards remain unvested with an estimated weighted average conversion threshold of $ 21.08 per share, which would result in an estimated 78,041 shares of common stock to be issued upon vesting. Each of the estimated 78,041 shares of common stock have a weighted-average grant date fair value of $ 24.77 per share. As of June 30, 2024 and December 31, 2023, the liability for these awards was $ 0.8 million and is reported on the condensed consolidated balance sheets in other noncurrent liabilities. The fair value of performance-based market condition share awards is estimated on the grant date using a risk-neutral Monte Carlo simulation model. The grant date fair value of the remaining outstanding awards granted in 2019 was $ 0.8 million. The grant date fair value of the 2020 awards was $ 1.1 million. The Company recognized stock-based compensation expense relating to performance-based market condition share awards of zero for the three and six months ended June 30, 2024 . The Company recognized stock-based compensation expense relating to performance-based market condition share awards of $ 0.1 million for the three and six months ended June 30, 2023. The assumptions used in determining the fair value for the performance-based market condition share awards outstanding at June 30, 2024 were as follows: June 30, Expected volatility 68.2 % Dividend yield 0.0 % Risk-free interest rate 4.3 % Weighted-average expected term (in years) 9.2 The weighted-average expected term of the Company’s performance-based market condition share awards is the weighted-average of the derived service periods for the share awards.

Earnings Per Share

Earnings Per Share	3 Months Ended
	Mar. 31, 2024
Earnings Per Share [Abstract]
Earnings Per Share	11. Earnings Per Share Basic earnings per share is computed using the weighted-average number of common shares outstanding during the period. Diluted earnings per share is computed using the weighted-average number of common shares outstanding during the period, plus the dilutive effect of outstanding options, using the treasury stock method and the average market price of the Company’s common stock during the applicable period. Certain shares related to some of the Company’s outstanding employee share awards were excluded from the computation of diluted earnings per share because they were antidilutive in the periods presented but could be dilutive in the future. Performance-based market condition share awards are considered contingently issuable shares, which would be included in the denominator for earnings per share if the applicable market conditions have been achieved, and the inclusion of any performance-based market condition share awards is dilutive for the respective reporting periods. For both the three and six months ended June 30, 2024 and 2023 , unvested performance-based market condition share awards were excluded from the calculation of diluted earnings per share because the market conditions had not been met. There were no 7 % Series A Redeemable Convertible Participating Preferred Stock shares outstanding at June 30, 2024. The shares of convertible preferred stock that were outstanding prior to their mandatory redemption were anti-dilutive for the portions of the three and six months ended June 30, 2024 in which they were outstanding, and are therefore excluded from the diluted loss per common share calculation. The details of the computation of basic and diluted earnings per common share are as follows: Three Months Ended Six Months Ended (dollars in millions, share data in thousands except earnings per share) 2024 2023 2024 2023 Net (loss) income and comprehensive $ ( 2.8 ) $ ( 8.1 ) $ 8.2 $ ( 1.0 ) Accretion to redemption value of redeemable ( 2.0 ) ( 10.4 ) ( 12.7 ) ( 20.5 ) Net loss and comprehensive loss $ ( 4.8 ) $ ( 18.5 ) $ ( 4.5 ) $ ( 21.5 ) Weighted average common shares outstanding 155,915 62,868 109,477 65,048 Basic loss per share $ ( 0.03 ) $ ( 0.29 ) $ ( 0.04 ) $ ( 0.33 ) Net loss and comprehensive loss $ ( 4.8 ) $ ( 18.5 ) $ ( 4.5 ) $ ( 21.5 ) Diluted weighted average common shares 155,915 62,868 109,477 65,048 Diluted loss per share $ ( 0.03 ) $ ( 0.29 ) $ ( 0.04 ) $ ( 0.33 ) Anti-dilutive employee share awards excluded 7,786 20,847 7,857 20,847

Income Taxes

Income Taxes	6 Months Ended
	Jun. 30, 2024
Income Tax Disclosure [Abstract]
Income Taxes	12. Income Taxes The Company determines its interim income tax provision by applying the estimated effective income tax rate expected to be applicable for the full fiscal year to the income before income taxes for the period. In determining the full year effective tax rate estimate, the Company does not include the estimated impact of unusual and/or infrequent items, which may cause significant variations in the expected relationship between income tax expense (benefit) and pre-tax income (loss). Significant judgment is exercised in determining the income tax provision due to transactions, credits and estimates where the ultimate tax determination is uncertain. The Company’s U.S. federal statutory corporate income tax rate was 21 % as of June 30, 2024. For the three and six months ended June 30, 2024, the Company recorded a benefit from income taxes of $ 0.7 million and a provision for income taxes of $ 2.8 million , respectively, which resulted in an effective tax rate of 20.0 % and 25.5 % , respectively. The differences between the U.S. federal statutory and effective tax rates before discrete items are primarily attributable to changes in valuation allowances and state taxes. For the three and six months ended June 30, 2023, the Company recorded a benefit from income taxes of $ 4.4 million and $ 1.7 million , respectively, which resulted in an effective tax rate of 35.2 % and 63.0 % , respectively. Liabilities for unrecognized tax benefits and associated interest and penalties were immaterial as of June 30, 2024 and December 31, 2023 .

Commitments and Contingencies

Commitments and Contingencies	6 Months Ended
	Jun. 30, 2024
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	13. Commitments and Contingencies Leases and Other Contractual Arrangements The Company has entered into operating leases for office space and office equipment and other contractual obligations primarily to secure venues for the Company’s trade shows and events. These agreements are not unilaterally cancellable by the Company, are legally enforceable and specify fixed or minimum amounts or quantities of goods or services at fixed or minimum prices. Legal Proceedings and Contingencies The Company is subject to litigation and other claims in the ordinary course of business. In the opinion of management, the Company’s liability, if any, arising from regulatory matters and legal proceedings related to these matters is not expected to have a material adverse impact on the Company’s condensed consolidated balance sheets, results of operations or cash flows. In the opinion of management, there are no claims, commitments or guarantees pending to which the Company is party that would have a material adverse effect on the condensed consolidated financial statements.

Accounts Payable and Other Curr

Accounts Payable and Other Current liabilities	6 Months Ended
	Jun. 30, 2024
Payables and Accruals [Abstract]
Accounts Payable and Other Current Liabilities	14. Accounts payable and other current liabilities Accounts payable and other current liabilities consisted of the following: (in millions) June 30, December 31, Trade payables $ 12.1 $ 24.1 Other current liabilities 8.4 9.3 Accrued event costs 18.5 6.7 Accrued personnel costs 9.3 6.5 Total accounts payable and other current liabilities $ 48.3 $ 46.6

Segment Information

Segment Information	6 Months Ended
	Jun. 30, 2024
Segment Reporting [Abstract]
Segment Information	15. Segment Information The Company routinely evaluates whether its operating and reportable segments continue to reflect the way the CODM evaluates the business. The determination is based on: (1) how the Company’s CODM evaluates the performance of the business, including resource allocation decisions, and (2) whether discrete financial information for each operating segment is available. The Company considers its Chief Executive Officer to be its CODM. The CODM evaluates performance based on the results of three business lines, which represent the Company’s three operating segments. The Connections segment is the only operating segment which meets the criteria to be classified as a reportable segment. The Connections reportable segment includes all of Emerald’s trade shows and other live events. The other two operating segments, which provide diverse media services and e-commerce software solutions, did not meet the quantitative thresholds of a reportable segment and did not meet the aggregation criteria set forth in Accounting Standards Codification 280 (“ASC 280”), Segment Reporting and as such are referred to as “All Other.” Operating segment performance is evaluated by the Company’s CODM based on Adjusted EBITDA, a non-GAAP measure, defined as EBITDA exclusive of general corporate expenses, stock-based compensation expense, impairments and other items. These adjustments are primarily related to items that are managed on a consolidated basis at the corporate level. The exclusion of such charges from each segment is consistent with how the CODM evaluates segment performance. The following table presents a reconciliation of reportable segment revenues, other income, net, and Adjusted EBITDA to net (loss) income: Three Months Ended Six Months Ended (in millions) 2024 2023 2024 2023 Revenues Connections $ 75.0 $ 75.6 $ 198.4 $ 187.8 All Other 11.0 10.9 21.0 21.0 Total revenues $ 86.0 $ 86.5 $ 219.4 $ 208.8 Other income, net Connections $ — $ — $ 1.0 $ — All Other — — — — Total other income, net $ — $ — $ 1.0 $ — Adjusted EBITDA Connections $ 26.4 $ 25.1 $ 82.6 $ 74.5 All Other 1.8 1.0 2.1 0.7 Subtotal Adjusted EBITDA $ 28.2 $ 26.1 $ 84.7 $ 75.2 General corporate and other expenses $ ( 12.9 ) $ ( 11.5 ) $ ( 28.6 ) $ ( 24.1 ) Interest expense, net ( 9.9 ) ( 9.1 ) ( 19.7 ) ( 16.0 ) Loss on extinguishment of debt — ( 2.3 ) — ( 2.3 ) Depreciation and amortization expense ( 7.0 ) ( 12.9 ) ( 14.1 ) ( 26.4 ) Stock-based compensation expense ( 1.5 ) ( 1.9 ) ( 4.0 ) ( 4 .0 ) Other items ( 0.4 ) ( 0.9 ) ( 7.3 ) ( 5.1 ) (Loss) income before income taxes $ ( 3.5 ) $ ( 12.5 ) $ 11.0 $ ( 2.7 ) The Company’s CODM does not receive information with a measure of total assets or capital expenditures for each operating segment as this information is not used for the evaluation of operating segment performance as the Company’s operations are not capital intensive. Capital expenditure information is provided to the CODM on a consolidated basis. Therefore, the Company has not provided asset and capital expenditure information by reportable segment. Intersegment revenues were immaterial for the three and six months ended June 30, 2024 and 2023. For the three and six months ended June 30, 2024 and 2023 , substantially all revenues were derived from transactions in the United States.

Related Party Transactions

Related Party Transactions	6 Months Ended
	Jun. 30, 2024
Related Party Transactions [Abstract]
Related Party Transactions	16. Related Party Transactions Investment funds affiliated with Onex Corporation owned approximately 90.5 % of the Company’s common stock as of June 30, 2024 . Affiliates of Onex Corporation held a 48.0 % ownership position in ASM Global (“ASM”), including SMG Food & Beverage, LLC, a wholly-owned subsidiary of ASM, which the Company has contracted with for catering services at certain of the Company’s trade shows and events, and a 96.0 % ownership position in Convex Group Ltd. (“Convex”), which is one of the insurers in the syndicate that provides the Company’s insurance coverage. Additionally, certain of the Company’s future tradeshows and other events may be held at facilities managed by ASM. During the three and six months ended June 30, 2024, three and five events were staged at ASM-managed venues, respectively. During the three and six months ended June 30, 2023 , two and six events were staged at ASM-managed venues, respectively. The Company paid to ASM aggregate fees, inclusive of certain concessions, equal to $ 0.3 million and $ 0.7 million during the three and six months ended June 30, 2024 , respectively. The Company paid to ASM aggregate fees, inclusive of certain concessions, equal to $ 0.4 million and $ 0.7 million during the three and six months ended June 30, 2023 , respectively. The Company had $ 0.1 million and $ 0.3 million fees due to ASM as of June 30, 2024 and December 31, 2023 , respectively. The Company made no payments to Convex during the three and six months ended June 30, 2024 . The Company made payments of $ 0.2 million to Convex during the three and six months ended June 30, 2023 . The Company had $ 0.7 million and $ 0.3 million due to Convex as of June 30, 2024 and December 31, 2023 , respectively.

Subsequent Event

Subsequent Event	6 Months Ended
	Jun. 30, 2024
Subsequent Events [Abstract]
Subsequent Event	17. Subsequent Event On August 6, 2024 , the Company’s Board of Directors approved the reintroduction of a regular quarterly dividend, and declared a dividend for the quarter ending September 30, 2024 of $ 0.015 per share payable on August 29, 2024 to holders of the Company’s common stock as of August 19, 2024 .

Basis of Presentation (Policies

Basis of Presentation (Policies)	6 Months Ended
	Jun. 30, 2024
Accounting Policies [Abstract]
Basis of Presentation	The unaudited condensed consolidated financial statements include the operations of Emerald Holding, Inc. (the “Company” or “Emerald”) and its wholly-owned subsidiaries. These unaudited condensed consolidated financial statements are presented in conformity with accounting principles generally accepted in the United States of America (“GAAP”) for interim financial information and with the instructions to Form 10-Q and Article 10 of Regulation S-X of the SEC for Interim Reporting. All intercompany transactions, accounts and profits/losses, if any, have been eliminated in the unaudited condensed consolidated financial statements. In the opinion of management, all recurring adjustments considered necessary for a fair statement of results for the interim period have been included. These unaudited condensed consolidated financial statements do not include all disclosures required by GAAP, and therefore, these unaudited condensed consolidated financial statements should be read in conjunction with the more detailed audited consolidated financial statements for the year ended December 31, 2023. The December 31, 2023 condensed consolidated balance sheet was derived from the Company’s audited consolidated financial statements for the year ended December 31, 2023. The results for the three and six months ended June 30, 2024 are not necessarily indicative of results to be expected for a full year, any other interim periods or any future year or period.
Recently Issued Accounting Pronouncements	Recently Issued Accounting Pronouncements In November 2023, the FASB issued ASU 2023-07, Segment Reporting (Topic 280) Improvements to Reportable Segment Disclosures (“ASU 2023-07”). ASU 2023-07 requires disclosure of significant segment expenses that are regularly provided to the chief operating decision maker and included within the segment measure of profit or loss. The standard is required to be applied retrospectively to prior periods presented, based on the significant segment expense categories identified and disclosed in the period of adoption. ASU 2023-07 is effective for fiscal years beginning after December 15, 2023, and interim periods within fiscal years beginning after December 15, 2024. Early adoption is permitted. The Company is currently evaluating the impact the adoption will have on the disclosures within the Company’s consolidated financial statements. In December 2023, the FASB issued ASU 2023-09, Income Taxes (Topic 740): Improvements to Income Tax Disclosures (“ASU 2023-09”). ASU 2023-09 requires disclosure of disaggregated information about a reporting entity’s effective tax rate reconciliation as well as information on income taxes paid. The standard is intended to benefit investors by providing more detailed income tax disclosures that would be useful in making capital allocation decisions and applies to all entities subject to income taxes. The standard should be applied on a prospective basis although retrospective application is permitted. ASU 2023-09 is effective for fiscal years beginning after December 15, 2024. Early adoption is permitted. The Company is currently evaluating the impact the adoption will have on the disclosures within the Company’s consolidated financial statements. There have been no other new accounting pronouncements that are expected to have a significant impact on the Company’s condensed consolidated financial statements or notes thereto.
Revenue Recognition and Deferred Revenue	Revenue Recognition and Deferred Revenue Revenue is recognized as the customer receives the benefit of the promised services and performance obligations are satisfied. Revenue is recognized at an amount that reflects the consideration the Company expects to receive in exchange for those services. Customers generally receive the benefit of the Company’s services upon the staging of each trade show or conference event and over the subscription period for access to the Company’s subscription software and services. Fees are typically invoiced and collected in-full prior to the trade show or event. A significant portion of the Company’s annual revenue is generated from the Connections segment, primarily related to the production of trade shows and conference events (collectively, “trade shows”), including booth space sales, registration fees and sponsorship fees. The Company recognizes revenue in the period the trade show occurs. Trade show and other events revenues represented approximately 87.2 % and 87.4 % of total revenues for the three months ended June 30, 2024 and 2023, respectively. Trade show and other events revenues represented approximately 90.4 % and 89.9 % of total revenues for the six months ended June 30, 2024 and 2023, respectively. Content revenues primarily consist of advertising sales for digital products and industry publications that complement the event properties, custom content agency revenues and subscription fees for educational and e-learning services. Advertising sales and custom content revenues are recognized in the period in which the custom content and digital products are provided or publications are issued. Subscription fees for educational and e-learning services are billed and collected at the subscription date. Typically, the fees charged are collected after the custom content and digital products are delivered or publications are issued. Commerce revenues primarily consist of software-as-a-service subscription revenue, implementation fees and professional services. Fees associated with implementation are deferred and recognized over the expected customer life, which is four years . Subscription revenue is generally recognized over the term of the contract. Deferred revenues generally consist of booth space sales, registration fees and sponsorship fees that are invoiced prior to a trade show, as well as upfront payments for software subscription fees, professional services and implementation fees for the Company’s subscription software and services. Current deferred revenues were $ 175.5 million as of June 30, 2024 and are reported as deferred revenues on the condensed consolidated balance sheets. Long-term deferred revenues as of June 30, 2024 were $ 0.4 million and are reported as other noncurrent liabilities on the condensed consolidated balance sheets. Current and long-term deferred revenues as of December 31, 2023 were $ 174.3 million and $ 0.9 million, respectively. During the six months ended June 30, 2024 , the Company recognized revenues of $ 135.3 million from amounts included in deferred revenue at the beginning of the respective period. The accounts receivable and deferred revenue balances related to cancelled events are classified as cancelled event liabilities in the condensed consolidated balance sheets as the total amount represents balances which are expected to be refunded to customers. As of June 30, 2024, cancelled event liabilities of $ 0.6 million represents $ 0.5 million of deferred revenues for cancelled trade shows and $ 0.1 million of related accounts receivable credits reclassified to cancelled event liabilities in the condensed consolidated balance sheets. As of December 31, 2023, cancelled event liabilities of $ 0.6 million represented $ 0.5 million of deferred revenues for cancelled trade shows and $ 0.1 million of related accounts receivable credits reclassified to cancelled event liabilities in the condensed consolidated balance sheets. Performance Obligations For the Company’s trade shows and other events, sales are deferred and recognized when performance obligations under the terms of a contract with the Company’s customers are satisfied, which is typically at the completion of a show or event. Revenue is measured as the amount of consideration the Company earns upon completion of its performance obligations. For the Company’s commerce offerings, the Company may enter into contracts with customers that include multiple performance obligations, which are generally capable of being distinct. Fees associated with implementation and related professional services are deferred and recognized over the expected customer life, which is four years . Subscription revenue is recognized over the term of the contract. The Company’s contracts associated with subscription software and services are generally three-year terms with one-year renewals following the initial three-year term. For the Company’s content offerings, revenues are deferred and recognized when performance obligations under the terms of a contract with the Company’s customers are satisfied. This generally occurs in the period in which the publications are issued. Revenue is measured as the amount of consideration the Company earns upon completion of its performance obligations. The Company applies a practical expedient which allows the exclusion of disclosure information regarding remaining performance obligations if the performance obligation is part of a contract that has an expected duration of one year or less. The Company’s performance obligations greater than one year were $ 0.4 million as of June 30, 2024. Disaggregation of Revenue The following table represents revenues disaggregated by type: Three Months Ended Six Months Ended 2024 2023 2024 2023 Revenues (in millions) Connections $ 75.0 $ 75.6 $ 198.4 $ 187.8 Content 5.9 6.1 10.6 11.6 Commerce 5.1 4.8 10.4 9.4 Total revenues $ 86.0 $ 86.5 $ 219.4 $ 208.8 Contract Balances The Company’s contract assets are primarily sales commissions incurred in connection with the Company’s subscription software and services, which are expensed over the expected customer relationship period. As of June 30, 2024, the Company does not have material contract assets. Contract liabilities generally consist of booth space sales, registration fees, sponsorship fees that are collected prior to the trade show or other event and subscription revenue, implementation fees and professional services associated with the Company’s subscription software and services. Contract liabilities less than one year from the date of the performance obligation are reported on the condensed consolidated balance sheets as deferred revenues. Contract liabilities greater than one year from the date of the performance obligation are reported on the condensed consolidated balance sheets in other noncurrent liabilities. The Company’s sales commission costs incurred in connection with sales of booth space, registration fees and sponsorship fees at the Company’s trade shows and other events and with sales of advertising for publications are short term, as sales typically begin up to one year prior to the date of the trade shows and other events. The Company expects the period benefited by each commission to be less than one year , and as a result, the Company expenses sales commissions associated with trade shows, other events and other marketing services as incurred. Sales commissions are reported on the condensed consolidated statements of (loss) income and comprehensive (loss) income as selling, general and administrative expense. Accounts Receivable The Company monitors collections and payments from its customers and maintains an allowance based upon applying an expected credit loss rate to receivables based on the historical loss rate from similar higher risk customers adjusted for current conditions, including any specific customer collection issues identified, and forecasts of economic conditions. Delinquent account balances are written off after management has determined that the likelihood of collection is remote. The activities in this account, including the current-period provision for expected credit losses for the three and six months ended June 30, 2024 , were $ 0.2 million and $ 0.4 million, respectively, and the activities for the three and six months ended June 30, 2023 , were $ 0.1 million and $ 0.2 million, respectively. Account balances written off during the three and six months ended June 30, 2024 , were $ 0.1 million and $ 0.2 million, respectively. Account balances written off during the three and six months ended June 30, 2023 , were zero and $ 0.2 million, respectively.

Revenues (Tables)

Revenues (Tables)	6 Months Ended
	Jun. 30, 2024
Revenue from Contract with Customer [Abstract]
Summary of Revenues Disaggregated	The following table represents revenues disaggregated by type: Three Months Ended Six Months Ended 2024 2023 2024 2023 Revenues (in millions) Connections $ 75.0 $ 75.6 $ 198.4 $ 187.8 Content 5.9 6.1 10.6 11.6 Commerce 5.1 4.8 10.4 9.4 Total revenues $ 86.0 $ 86.5 $ 219.4 $ 208.8

Business Acquisitions (Tables)

Business Acquisitions (Tables)	6 Months Ended
	Jun. 30, 2024
Schedule of Supplemental Pro-Forma Information	Supplemental information on an unaudited pro-forma basis is reflected as if the 2023 and 2024 acquisitions had occurred at the beginning of 2023, after giving effect to certain pro-forma adjustments primarily related to the amortization of acquired intangible assets and interest expense. The unaudited pro-forma supplemental information is based on estimates and assumptions that the Company believes are reasonable and reflects amortization of intangible assets as a result of the acquisition. The supplemental unaudited pro-forma financial information is presented for comparative purposes only. It is not necessarily indicative of what the Company’s financial position or results of operations actually would have been had the Company completed the acquisition at the dates indicated, nor is it intended to project the future financial position or operating results of the combined Company. Further, the supplemental pro-forma information has not been adjusted for show timing differences or discontinued events. Three Months Ended Six Months Ended 2023 2023 (in millions) (Unaudited) Pro-forma revenues (1)(2) Hotel Interactive $ 1.8 $ 3.9 Emerald revenue 86.5 208.8 Total pro-forma revenues $ 88.3 $ 212.7 Pro-forma net (loss) income (2) Hotel Interactive $ 0.1 $ 0.2 Lodestone — ( 0.3 ) Emerald net loss ( 8.1 ) ( 1.0 ) Total pro-forma net (loss) income $ ( 8.0 ) $ ( 1.1 ) (1) Pro-forma revenues from the Lodestone acquisition were not material to the three months ended March 31, 2023. (2) Pro-forma revenues and net loss from the Futurist acquisition were not material to the three and six months ended June 30, 2023.
Hotel Interactive [Member]
Summary of Purchase Price Allocation and Measurement Period Adjustment	The following table summarizes the preliminary fair value of the acquired assets and liabilities on the acquisition date: (in millions) January 19, Trade and other receivables $ 1.2 Prepaid expenses and other current assets 1.1 Goodwill 11.8 Intangible assets 4.1 Deferred revenues ( 4.7 ) Purchase price, including working capital adjustment $ 13.5

Property and Equipment (Tables)

Property and Equipment (Tables)	6 Months Ended
	Jun. 30, 2024
Property, Plant and Equipment [Abstract]
Summary of Property and Equipment, Net	Property and equipment, net, consisted of the following: (in millions) June 30, December 31, Furniture, equipment and other $ 5.5 $ 5.2 Leasehold improvements 1.2 1.0 6.7 6.2 Less: Accumulated depreciation ( 5.2 ) ( 4.7 ) Property and equipment, net $ 1.5 $ 1.5

Intangible Assets and Goodwill

Intangible Assets and Goodwill (Tables)	6 Months Ended
	Jun. 30, 2024
Goodwill and Intangible Assets Disclosure [Abstract]
Summary of Intangible Assets	Intangible assets, net consisted of the following: (in millions) Indefinite- Customer Definite- Acquired Acquired Computer Capitalized Total Gross carrying $ 52.6 $ 368.2 $ 92.8 $ 8.4 $ 2.6 $ 42.3 $ 1.6 $ 568.5 Accumulated amortization — ( 343.5 ) ( 25.4 ) ( 5.1 ) ( 1.2 ) ( 21.9 ) — ( 397.1 ) Net carrying $ 52.6 $ 24.7 $ 67.4 $ 3.3 $ 1.4 $ 20.4 $ 1.6 $ 171.4 Gross carrying $ 52.6 $ 365.4 $ 91.1 $ 8.4 $ 2.6 $ 36.9 $ 1.6 $ 558.6 Accumulated amortization — ( 336.7 ) ( 22.6 ) ( 4.7 ) ( 1.0 ) ( 18.5 ) — ( 383.5 ) Net carrying $ 52.6 $ 28.7 $ 68.5 $ 3.7 $ 1.6 $ 18.4 $ 1.6 $ 175.1
Schedule of Changes in Carrying Amount of Goodwill for Each Reportable Segment	The table below summarizes the changes in the carrying amount of goodwill for each reportable segment: Reportable Segment (in millions) Connections All Other Total Balance at December 31, 2023 $ 518.3 $ 35.6 $ 553.9 Acquired goodwill 13.6 — 13.6 Balance at June 30, 2024 $ 531.9 $ 35.6 $ 567.5

Debt (Tables)

Debt (Tables)	6 Months Ended
	Jun. 30, 2024
Debt Disclosure [Abstract]
Summary of Long-Term Debt	Debt is comprised of the following indebtedness to various lenders: (in millions) June 30, December 31, Extended Term Loan Facility, with 5.10 % as of June 30, 2024, 10.44 % and 10.46 % 2026 , net (a) $ 402.8 $ 402.9 Less: Current maturities 4.2 4.2 Long-term debt, net of current maturities, debt $ 398.6 $ 398.7 (a) The Extended Term Loan Facility (as defined below), scheduled to mature on May 22, 2026 , was recorded net of unamortized discount of $ 7.2 million and net of unamortized deferred financing fees of $ 1.2 million as of June 30, 2024. The Extended Term Loan Facility as of December 31, 2023 was recorded net of unamortized discount of $ 8.9 million and net of unamortized deferred financing fees of $ 1.5 million . The fair market value of the Company’s debt under the Extended Term Loan Facility was $ 413.1 million as of June 30, 2024 .
Summary of Interest Expense	Interest expense reported in the condensed consolidated statements of (loss) income and comprehensive (loss) income consists of the following: Three Months Ended Six Months Ended (in millions) 2024 2023 2024 2023 Extended Term Loan Facility $ 10.8 $ 2.2 $ 21.7 $ 2.2 Amended and Restated Term Loan Facility — 6.4 — 13.9 Term Loan Amendment third party fees — 2.1 — 2.1 Non-cash interest for amortization of debt discount 1.1 0.5 2.2 0.9 Revolving credit facility interest and commitment fees 0.1 0.2 0.2 0.3 Total interest expense $ 12.0 $ 11.4 $ 24.1 $ 19.4

Fair Value Measurements and F_2

Fair Value Measurements and Financial Risk (Tables)	6 Months Ended
	Jun. 30, 2024
Fair Value Disclosures [Abstract]
Financial Assets and Liabilities Measured at Fair Value on Recurring Basis	As of June 30, 2024, the Company’s assets and liabilities measured at fair value on a recurring basis are categorized in the table below: (in millions) Total Level 1 Level 2 Level 3 Assets Cash and cash equivalents $ 33.7 $ 33.7 $ — $ — Money market mutual funds (a) 159.5 159.5 — — Total assets at fair value $ 193.2 $ 193.2 $ — $ — Liabilities Market-based share awards liability (b) $ 0.8 $ — $ — $ 0.8 Contingent consideration (b) 9.6 — — 9.6 Total liabilities at fair value $ 10.4 $ — $ — $ 10.4 (a) The Company’s money market mutual funds of $ 159.5 million as of June 30, 2024 are included within cash and cash equivalents in the condensed consolidated balance sheets. The money market mutual funds are traded in active markets and quoted in broker or dealer quotations and are classified as Level 1 assets. The fair value of the Company’s money market mutual funds is based on unadjusted quoted prices on the reporting date. (b) The market-based share awards liability of $ 0.8 million as of June 30, 2024 is included within other noncurrent liabilities in the condensed consolidated balance sheet. The fair value of the Company’s market-based share awards and contingent consideration are derived from valuation techniques in which one or more significant inputs are unobservable, including the Company’s own assumptions. Contingent consideration of $ 0.5 million as of June 30, 2024 is included within contingent consideration in the condensed consolidated balance sheets and contingent consideration of $ 9.1 million is included within other noncurrent liabilities in the condensed consolidated balance sheets. As of December 31, 2023, the Company’s assets and liabilities measured at fair value on a recurring basis are categorized in the table below: (in millions) Total Level 1 Level 2 Level 3 Assets Cash and cash equivalents $ 27.2 $ 27.2 $ — $ — Money market mutual funds (a) 177.0 177.0 — — Total assets at fair value $ 204.2 $ 204.2 $ — $ — Liabilities Market-based share awards liability (b) $ 0.8 $ — $ — $ 0.8 Contingent consideration (b) 6.9 — — 6.9 Total liabilities at fair value $ 7.7 $ — $ — $ 7.7 (a) The Company’s money market mutual funds are based on the closing price of these assets as of the reporting date. The fair value of the Company’s money market mutual funds is based on unadjusted quoted prices on the reporting date. The Company’s money market mutual funds are quoted in an active market and classified as Level 1 assets. (b) Included within other noncurrent liabilities in the consolidated balance sheet. The fair value of the Company’s market-based share awards and contingent consideration are derived from valuation techniques in which one or more significant inputs are unobservable, including the Company’s own assumptions.
Summary of Changes in Fair Value of Contingent Consideration Liabilities	The change in fair value of the Company’s contingent consideration liabilities consists of the following activity: Six Months Ended (in millions) 2024 Balance at December 31, 2023 $ 6.9 Payment of contingent consideration ( 0.2 ) Fair value remeasurement adjustments ( 0.7 ) Business acquisition 3.6 Balance at June 30, 2024 $ 9.6

Stock-Based Compensation (Table

Stock-Based Compensation (Tables)	6 Months Ended
	Jun. 30, 2024
Share-Based Payment Arrangement [Abstract]
Schedule of Stock Option Activity	Stock option activity for the six months ended June 30, 2024, was as follows: Weighted-Average Number of Exercise Price Remaining Aggregate (thousands) (years) (millions) Outstanding at December 31, 2023 19,791 $ 6.25 7.4 $ 15.7 Granted 270 6.09 Exercised ( 250 ) 5.12 Forfeited/Expired ( 1,803 ) 8.30 Outstanding at June 30, 2024 18,008 $ 6.06 6.5 $ 13.3 Exercisable at June 30, 2024 9,054 $ 7.29 5.1 $ 3.0
Schedule of Restricted Stock Units Activity	RSU activity for the six months ended June 30, 2024, was as follows: (share data in thousands, except per share data) Number of Weighted Unvested balance, December 31, 2023 541 $ 5.95 Granted 91 6.59 Forfeited ( 18 ) 5.49 Vested ( 346 ) 6.35 Unvested balance, June 30, 2024 268 $ 5.71
Schedule of Weighted Average Assumptions Used in Determining Fair Value Performance-based Market Condition Share Awards Outstanding	The assumptions used in determining the fair value for the performance-based market condition share awards outstanding at June 30, 2024 were as follows: June 30, Expected volatility 68.2 % Dividend yield 0.0 % Risk-free interest rate 4.3 % Weighted-average expected term (in years) 9.2

Earnings Per Share (Tables)

Earnings Per Share (Tables)	3 Months Ended
	Mar. 31, 2024
Earnings Per Share [Abstract]
Computation of Basic and Diluted Income Per Common Share	The details of the computation of basic and diluted earnings per common share are as follows: Three Months Ended Six Months Ended (dollars in millions, share data in thousands except earnings per share) 2024 2023 2024 2023 Net (loss) income and comprehensive $ ( 2.8 ) $ ( 8.1 ) $ 8.2 $ ( 1.0 ) Accretion to redemption value of redeemable ( 2.0 ) ( 10.4 ) ( 12.7 ) ( 20.5 ) Net loss and comprehensive loss $ ( 4.8 ) $ ( 18.5 ) $ ( 4.5 ) $ ( 21.5 ) Weighted average common shares outstanding 155,915 62,868 109,477 65,048 Basic loss per share $ ( 0.03 ) $ ( 0.29 ) $ ( 0.04 ) $ ( 0.33 ) Net loss and comprehensive loss $ ( 4.8 ) $ ( 18.5 ) $ ( 4.5 ) $ ( 21.5 ) Diluted weighted average common shares 155,915 62,868 109,477 65,048 Diluted loss per share $ ( 0.03 ) $ ( 0.29 ) $ ( 0.04 ) $ ( 0.33 ) Anti-dilutive employee share awards excluded 7,786 20,847 7,857 20,847

Accounts Payable and Other Cu_2

Accounts Payable and Other Current Liabilities (Tables)	6 Months Ended
	Jun. 30, 2024
Payables and Accruals [Abstract]
Schedule of Accounts Payable and Other Current Liabilities	Accounts payable and other current liabilities consisted of the following: (in millions) June 30, December 31, Trade payables $ 12.1 $ 24.1 Other current liabilities 8.4 9.3 Accrued event costs 18.5 6.7 Accrued personnel costs 9.3 6.5 Total accounts payable and other current liabilities $ 48.3 $ 46.6

Segment Information (Tables)

Segment Information (Tables)	6 Months Ended
	Jun. 30, 2024
Segment Reporting [Abstract]
Reconciliation of Reportable Segment Revenues, Other Income, Net, and Adjusted EBITDA to Net (Loss) Income	The following table presents a reconciliation of reportable segment revenues, other income, net, and Adjusted EBITDA to net (loss) income: Three Months Ended Six Months Ended (in millions) 2024 2023 2024 2023 Revenues Connections $ 75.0 $ 75.6 $ 198.4 $ 187.8 All Other 11.0 10.9 21.0 21.0 Total revenues $ 86.0 $ 86.5 $ 219.4 $ 208.8 Other income, net Connections $ — $ — $ 1.0 $ — All Other — — — — Total other income, net $ — $ — $ 1.0 $ — Adjusted EBITDA Connections $ 26.4 $ 25.1 $ 82.6 $ 74.5 All Other 1.8 1.0 2.1 0.7 Subtotal Adjusted EBITDA $ 28.2 $ 26.1 $ 84.7 $ 75.2 General corporate and other expenses $ ( 12.9 ) $ ( 11.5 ) $ ( 28.6 ) $ ( 24.1 ) Interest expense, net ( 9.9 ) ( 9.1 ) ( 19.7 ) ( 16.0 ) Loss on extinguishment of debt — ( 2.3 ) — ( 2.3 ) Depreciation and amortization expense ( 7.0 ) ( 12.9 ) ( 14.1 ) ( 26.4 ) Stock-based compensation expense ( 1.5 ) ( 1.9 ) ( 4.0 ) ( 4 .0 ) Other items ( 0.4 ) ( 0.9 ) ( 7.3 ) ( 5.1 ) (Loss) income before income taxes $ ( 3.5 ) $ ( 12.5 ) $ 11.0 $ ( 2.7 )

Revenues - Additional Informati

Revenues - Additional Information (Detail) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023	Dec. 31, 2023
Revenue From Contract With Customer [Line Items]
Current deferred revenues	$ 175.5		$ 175.5		$ 174.3
Revenue recognized			135.3
Cancelled event liabilities	0.6		0.6		0.6
Provision for expected credit losses	0.2	$ 0.1	0.4	$ 0.2
Accounts receivable write off	0.1	$ 0	$ 0.2	$ 0.2
Maximum [Member]
Revenue From Contract With Customer [Line Items]
Contracts with customers sales beginning period			1 year
Contracts with customers commission benefited expected period			1 year
Other Noncurrent Liabilities [Member]
Revenue From Contract With Customer [Line Items]
Long-term deferred revenues	$ 0.4		$ 0.4		0.9
Trade Show and Other Events [Member] | Sales Revenue, Net [Member] | Customer Concentration Risk [Member]
Revenue From Contract With Customer [Line Items]
Concentration risk, percentage	87.20%	87.40%	90.40%	89.90%
Trade Shows [Member] | COVID-19 [Member]
Revenue From Contract With Customer [Line Items]
Current deferred revenues	$ 0.5		$ 0.5		0.5
Accounts receivable credits reclassified to cancelled event liabilities	$ 0.1		$ 0.1		$ 0.1

Revenues - Additional Informa_2

Revenues - Additional Information (Detail 1) $ in Millions	6 Months Ended
	Jun. 30, 2024 USD ($)
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date: 2024-07-01
Revenue From Contract With Customer [Line Items]
Revenue recognition of remaining performance obligations amount	$ 0.4
Maximum [Member] | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date: 2024-07-01
Revenue From Contract With Customer [Line Items]
Revenue recognition of remaining performance obligations original expected period	1 year
Implementation Fees and Professional Services [Member] | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date: 2024-04-01
Revenue From Contract With Customer [Line Items]
Revenue recognition of remaining performance obligations original expected period	4 years
Subscription Software and Services [Member] | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date: 2024-04-01
Revenue From Contract With Customer [Line Items]
Revenue recognition of remaining performance obligations original expected period	3 years
Revenue recognition of remaining performance obligations expected renewal period	1 year

Revenues - Summary of Revenues

Revenues - Summary of Revenues Disaggregated (Detail) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Disaggregation Of Revenue [Line Items]
Revenues	$ 86	$ 86.5	$ 219.4	$ 208.8
Connections [Member]
Disaggregation Of Revenue [Line Items]
Revenues	75	75.6	198.4	187.8
Content [Member]
Disaggregation Of Revenue [Line Items]
Revenues	5.9	6.1	10.6	11.6
Commerce [Member]
Disaggregation Of Revenue [Line Items]
Revenues	$ 5.1	$ 4.8	$ 10.4	$ 9.4

Business Acquisitions - Additio

Business Acquisitions - Additional Information (Detail) - USD ($) $ in Millions			3 Months Ended	6 Months Ended
	May 07, 2024	Jan. 19, 2024	Jun. 30, 2024	Jun. 30, 2024	Jun. 30, 2023	Dec. 31, 2023	Jan. 09, 2023
Business Acquisition [Line Items]
Contingent consideration on purchase price			$ 9.6	$ 9.6		$ 6.9
Goodwill			567.5	567.5		$ 553.9
Working capital adjustment receivable from seller				1	$ 0
Hotel Interactive [Member]
Business Acquisition [Line Items]
Purchase price		$ 13.5
Business acquisition, initial cash payment		11.6
Business combination, post close working capital adjustment receivable		0.8
Goodwill		11.8
Working capital adjustment receivable from seller			1
Revenues			1.7	4.5
Net income			$ 0	$ 0.6
Intangible assets		$ 4.1
Hotel Interactive [Member] | 2026 Payment [Member]
Business Acquisition [Line Items]
Business combination payment dependent upon compounded annual term		3 years
Hotel Interactive [Member] | Selling, General and Administrative Expenses [Member]
Business Acquisition [Line Items]
Acquisition costs incurred		$ 0.2
Hotel Interactive [Member] | Trade Names [Member]
Business Acquisition [Line Items]
Intangible assets		$ 1.6
Weighted-average amortization period		10 years
Assumed residual value		$ 0
Hotel Interactive [Member] | Customer Relationship Intangibles [Member]
Business Acquisition [Line Items]
Intangible assets		$ 2.5
Weighted-average amortization period		4 years
Assumed residual value		$ 0
Hotel Interactive [Member] | Estimated Fair Value [Member]
Business Acquisition [Line Items]
Contingent consideration on purchase price		$ 2.7					$ 2.7
The Futurist [Member]
Business Acquisition [Line Items]
Purchase price	$ 1.9
Business acquisition, initial cash payment	1.1
Goodwill	1.8
The Futurist [Member] | Estimated Fair Value [Member]
Business Acquisition [Line Items]
Contingent consideration on purchase price	$ 0.9

Business Acquisitions - Summary

Business Acquisitions - Summary of Purchase Price Allocation and Measurement Period Adjustment (Detail) - USD ($) $ in Millions	Jun. 30, 2024	Jan. 19, 2024	Dec. 31, 2023
Business Acquisition [Line Items]
Goodwill	$ 567.5		$ 553.9
Hotel Interactive [Member]
Business Acquisition [Line Items]
Trade and other receivables		$ 1.2
Prepaid expenses and other current assets		1.1
Goodwill		11.8
Intangible assets		4.1
Deferred revenues		(4.7)
Purchase price, including working capital adjustment		$ 13.5

Business Acquisitions - Schedul

Business Acquisitions - Schedule of Supplemental Pro-Forma Information (Detail) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
	Jun. 30, 2023	Jun. 30, 2023
Business Acquisition [Line Items]
Total pro-forma revenues	$ 88.3	$ 212.7
Total pro-forma net (loss) income	(8)	(1.1)
Hotel Interactive [Member]
Business Acquisition [Line Items]
Total pro-forma revenues	1.8	3.9
Total pro-forma net (loss) income	0.1	0.2
Emerald Revenue [Member]
Business Acquisition [Line Items]
Total pro-forma revenues	86.5	208.8
Lodestone Events [Member]
Business Acquisition [Line Items]
Total pro-forma net (loss) income		(0.3)
Emerald net loss [Member]
Business Acquisition [Line Items]
Total pro-forma net (loss) income	$ (8.1)	$ (1)

Property and Equipment - Summar

Property and Equipment - Summary of Property and Equipment, Net (Detail) - USD ($) $ in Millions	Jun. 30, 2024	Dec. 31, 2023
Property Plant And Equipment [Line Items]
Property and equipment, gross	$ 6.7	$ 6.2
Less: Accumulated depreciation	(5.2)	(4.7)
Property and equipment, net	1.5	1.5
Furniture, Equipment and Other [Member]
Property Plant And Equipment [Line Items]
Property and equipment, gross	5.5	5.2
Leasehold Improvements [Member]
Property Plant And Equipment [Line Items]
Property and equipment, gross	$ 1.2	$ 1

Property and Equipment - Additi

Property and Equipment - Additional Information (Detail) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Property, Plant and Equipment [Abstract]
Depreciation expense related to property and equipment	$ 300,000	$ 200,000	$ 500,000	$ 500,000
Loss on disposal of fixed assets	$ 0	$ 0	$ 0	$ 200,000

Intangible Assets and Goodwil_2

Intangible Assets and Goodwill - Summary of Intangible Assets (Detail) - USD ($) $ in Millions	Jun. 30, 2024	Dec. 31, 2023
Schedule Of Intangible Assets Excluding Goodwill [Line Items]
Gross carrying amount	$ 568.5	$ 558.6
Accumulated amortization	(397.1)	(383.5)
Net carrying amount	171.4	175.1
Trade Names [Member]
Schedule Of Intangible Assets Excluding Goodwill [Line Items]
Gross carrying amount	52.6	52.6
Net carrying amount	52.6	52.6
Customer Relationship Intangibles [Member]
Schedule Of Intangible Assets Excluding Goodwill [Line Items]
Gross carrying amount	368.2	365.4
Accumulated amortization	(343.5)	(336.7)
Net carrying amount	24.7	28.7
Trade Names [Member]
Schedule Of Intangible Assets Excluding Goodwill [Line Items]
Gross carrying amount	92.8	91.1
Accumulated amortization	(25.4)	(22.6)
Net carrying amount	67.4	68.5
Acquired Technology [Member]
Schedule Of Intangible Assets Excluding Goodwill [Line Items]
Gross carrying amount	8.4	8.4
Accumulated amortization	(5.1)	(4.7)
Net carrying amount	3.3	3.7
Acquired Content [Member]
Schedule Of Intangible Assets Excluding Goodwill [Line Items]
Gross carrying amount	2.6	2.6
Accumulated amortization	(1.2)	(1)
Net carrying amount	1.4	1.6
Computer Software [Member]
Schedule Of Intangible Assets Excluding Goodwill [Line Items]
Gross carrying amount	42.3	36.9
Accumulated amortization	(21.9)	(18.5)
Net carrying amount	20.4	18.4
Capitalized Software in Progress [Member]
Schedule Of Intangible Assets Excluding Goodwill [Line Items]
Gross carrying amount	1.6	1.6
Net carrying amount	$ 1.6	$ 1.6

Intangible Assets and Goodwil_3

Intangible Assets and Goodwill - Additional Information (Detail) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Schedule Of Intangible Assets Excluding Goodwill [Line Items]
Amortization expense	$ 6,700,000	$ 12,700,000	$ 13,600,000	$ 25,900,000
Goodwill impairment charge	$ 0	$ 0	$ 0	$ 0

Intangible Assets and Goodwil_4

Intangible Assets and Goodwill - Schedule of Changes in Carrying Amount of Goodwill for Each Reportable Segment (Detail) $ in Millions	6 Months Ended
	Jun. 30, 2024 USD ($)
Goodwill [Line Items]
Goodwill, balance	$ 553.9
Acquired goodwill	13.6
Goodwill, balance	567.5
Connections [Member]
Goodwill [Line Items]
Goodwill, balance	518.3
Acquired goodwill	13.6
Goodwill, balance	531.9
All Other [Member]
Goodwill [Line Items]
Goodwill, balance	35.6
Goodwill, balance	$ 35.6

Debt - Summary of Long-Term Deb

Debt - Summary of Long-Term Debt (Detail) - USD ($) $ in Millions	Jun. 30, 2024	Dec. 31, 2023
Debt Instrument [Line Items]
Long-term debt, net of current maturities, debt discount and deferred financing fees	$ 398.6	$ 398.7
Less: Current maturities	4.2	4.2
Extended Term Loan Facility [Member]
Debt Instrument [Line Items]
Less: Current maturities	4.2	4.2
Secured debt	$ 402.8	$ 402.9

Debt - Summary of Long-Term D_2

Debt - Summary of Long-Term Debt (Parenthetical) (Detail) - USD ($) $ in Millions		6 Months Ended	12 Months Ended
	Jun. 12, 2023	Jun. 30, 2024	Dec. 31, 2023
Extended Term Loan Facility [Member]
Debt Instrument [Line Items]
Actual interest rate		10.44%	10.46%
Maturity year		2026	2026
Debt maturity date	May 22, 2026	May 22, 2026
Unamortized discount		$ 7.2	$ 8.9
Unamortized deferred financing fees		1.2	$ 1.5
Fair market value		$ 413.1
Extended Term Loan Facility [Member] | SOFR [Member]
Debt Instrument [Line Items]
Basis spread		5%
Basis spread including credit spread adjustment		5.10%	5.10%
Amended and Restated Term Loan Facility [Member]
Debt Instrument [Line Items]
Debt maturity date	May 22, 2024

Debt - Term Loan Facility - Add

Debt - Term Loan Facility - Additional Information (Detail) - USD ($) $ in Millions		3 Months Ended		6 Months Ended		67 Months Ended
	Jun. 12, 2023	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023	Jun. 11, 2023	Dec. 31, 2023
Debt Instrument [Line Items]
Loss on extinguishment of debt		$ 0	$ 2.3	$ 0	$ 2.3
Original issuance discount				$ 0	(12.5)
Extended Term Loan Facility [Member]
Debt Instrument [Line Items]
Debt maturity date	May 22, 2026			May 22, 2026
Interest rate		11.65%		11.65%			11.66%
Borrowings outstanding	$ 415.3
Loss on extinguishment of debt					2.3
Extended Term Loan Facility [Member] | Loss on Extinguishment of Debt [Member]
Debt Instrument [Line Items]
Original issuance discount			(2.1)		2.1
Extended Term Loan Facility [Member] | SOFR [Member]
Debt Instrument [Line Items]
Basis spread on variable rate				5%
Credit spread adjustment				0.10%
Extended Term Loan Facility [Member] | ABR [Member]
Debt Instrument [Line Items]
Basis spread on variable rate				4%
Amended and Restated Term Loan Facility [Member]
Debt Instrument [Line Items]
Debt maturity date	May 22, 2024
Amended and Restated Term Loan Facility [Member] | Loss on Extinguishment of Debt [Member]
Debt Instrument [Line Items]
Previously capitalized OID and debt issuance costs			$ 0.2		$ 0.2
Amended and Restated Term Loan Facility [Member] | ABR [Member] | Maximum [Member]
Debt Instrument [Line Items]
Basis spread on variable rate						1.75%
Amended and Restated Term Loan Facility [Member] | ABR [Member] | Minimum [Member]
Debt Instrument [Line Items]
Basis spread on variable rate						1.50%
Amended and Restated Term Loan Facility [Member] | LIBOR [Member] | Maximum [Member]
Debt Instrument [Line Items]
Basis spread on variable rate						2.75%
Amended and Restated Term Loan Facility [Member] | LIBOR [Member] | Minimum [Member]
Debt Instrument [Line Items]
Basis spread on variable rate						2.50%

Debt - Revolving Credit Facilit

Debt - Revolving Credit Facility - Additional Information (Detail) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023	Dec. 31, 2023	Mar. 31, 2023	Feb. 02, 2023	Dec. 31, 2022
Amended and Restated Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Secured debt							$ 110,000,000	$ 100,400,000
Borrowings outstanding	$ 0		$ 0		$ 0
Financing fees						$ 600,000
Amended and Restated Revolving Credit Facility [Member] | SOFR [Member]
Debt Instrument [Line Items]
Basis spread	2.25%	2.25%	2.25%	2.25%
Amended and Restated Revolving Credit Facility [Member] | ABR [Member]
Debt Instrument [Line Items]
Basis spread	1.25%	1.25%	1.25%	1.25%
Amended and Restated Revolving Credit Facility and Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Stand-by letters of credit	$ 1,000,000		$ 1,000,000		$ 1,000,000

Debt - Summary of Interest Expe

Debt - Summary of Interest Expense (Detail) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Debt Instrument [Line Items]
Non-cash interest for amortization of debt discount and debt issuance costs	$ 1.1	$ 0.5	$ 2.2	$ 0.9
Total interest expense	12	11.4	24.1	19.4
Extended Term Loan Facility [Member]
Debt Instrument [Line Items]
Interest expense on term loan	10.8	2.2	21.7	2.2
Amended and Restated Term Loan Facility [Member]
Debt Instrument [Line Items]
Interest expense on term loan		6.4		13.9
Term Loan Amendment Third Party Fees [Member]
Debt Instrument [Line Items]
Interest expense on term loan		2.1		2.1
Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Revolving credit facility interest and commitment fees	$ 0.1	$ 0.2	$ 0.2	$ 0.3

Debt - Covenants - Additional I

Debt - Covenants - Additional Information (Detail) - Extended Term Loan Facility [Member] $ in Millions	6 Months Ended
	Jun. 30, 2024 USD ($)
Debt Instrument [Line Items]
Leverage ratio	550%
Letters of credit outstanding amount	$ 10
Percentage of amount outstanding exceeds total revolving commitment for testing of financial covenant	35%

Fair Value Measurements and F_3

Fair Value Measurements and Financial Risk - Financial Assets and Liabilities Measured at Fair Value on Recurring Basis (Detail) - USD ($) $ in Millions	Jun. 30, 2024	Dec. 31, 2023
Assets
Total assets at fair value	$ 193.2	$ 204.2
Liabilities
Market-based share awards liability	0.8	0.8
Contingent consideration	9.6	6.9
Total liabilities at fair value	10.4	7.7
Cash and Cash Equivalents [Member]
Assets
Cash and cash equivalents	33.7	27.2
Money Market Mutual Funds [Member]
Assets
Cash and cash equivalents	159.5	177
Fair Value Measurements Recurring [Member] | Level 1 [Member]
Assets
Total assets at fair value	193.2	204.2
Fair Value Measurements Recurring [Member] | Level 3 [Member]
Liabilities
Market-based share awards liability	0.8	0.8
Contingent consideration	9.6	6.9
Total liabilities at fair value	10.4	7.7
Fair Value Measurements Recurring [Member] | Cash and Cash Equivalents [Member] | Level 1 [Member]
Assets
Cash and cash equivalents	33.7	27.2
Fair Value Measurements Recurring [Member] | Money Market Mutual Funds [Member] | Level 1 [Member]
Assets
Cash and cash equivalents	$ 159.5	$ 177

Fair Value Measurements and F_4

Fair Value Measurements and Financial Risk - Financial Assets and Liabilities Measured at Fair Value on Recurring Basis (Parenthetical) (Detail) - USD ($) $ in Millions	Jun. 30, 2024	Dec. 31, 2023
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Money market mutual funds	$ 159.5
Market-based share awards liability	0.8	$ 0.8
Contingent consideration	0.5
Other Noncurrent Liabilities [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Market-based share awards liability	0.8
Contingent consideration	$ 9.1

Fair Value Measurements and F_5

Fair Value Measurements and Financial Risk - Additional Information (Detail) - USD ($)	3 Months Ended	6 Months Ended
	Jun. 30, 2024	Jun. 30, 2024	Jun. 30, 2023	Jan. 19, 2024	Dec. 31, 2023	Jan. 09, 2023
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Market-based share awards liability	$ 800,000	$ 800,000			$ 800,000
Contingent consideration on purchase price	9,600,000	9,600,000			6,900,000
Payment of contingent consideration	0	200,000	$ 3,700,000
Selling, General and Administrative Expenses [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Business combination increase (decrease) in fair value of contingent consideration liability	700,000	700,000
2024, 2023 and 2022 Acquisitions [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Contingent consideration on purchase price	9,600,000	9,600,000			6,900,000
Hotel Interactive [Member] | Estimated Fair Value [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Contingent consideration on purchase price				$ 2,700,000		$ 2,700,000
Expected to be Settled in 2025 [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Contingent consideration on purchase price	500,000	500,000
Expected to be Settled in 2027 [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Contingent consideration on purchase price	9,100,000	9,100,000
Market-based Share Awards [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Market-based share awards liability	$ 800,000	800,000			$ 800,000
Employee right to receive restricted stock equal to maximum cash price		$ 9,800,000

Fair Value Measurements and F_6

Fair Value Measurements and Financial Risk - Summary of Changes in Fair Value of Contingent Consideration Liabilities (Details) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
	Jun. 30, 2024	Jun. 30, 2024	Jun. 30, 2023
Business Acquisition, Contingent Consideration [Line Items]
Beginning Balance		$ 6.9
Payment of contingent consideration	$ 0	(0.2)	$ (3.7)
Ending Balance	9.6	9.6
Contingent Consideration Liabilities [Member]
Business Acquisition, Contingent Consideration [Line Items]
Beginning Balance		6.9
Payment of contingent consideration		(0.2)
Fair value remeasurement adjustments		(0.7)
Business acquisition		3.6
Ending Balance	$ 9.6	$ 9.6

Stockholders' Equity (Deficit_2

Stockholders' Equity (Deficit) and Redeemable Convertible Preferred Stock - Additional Information (Detail) - USD ($)						2 Months Ended	3 Months Ended				6 Months Ended
	May 02, 2024	Apr. 17, 2024	Mar. 28, 2024	Jul. 24, 2020	Jun. 10, 2020	Aug. 13, 2020	Jun. 30, 2024	Mar. 31, 2024	Jun. 30, 2023	Mar. 31, 2023	Jun. 30, 2024	Jun. 30, 2023	Nov. 30, 2023	Oct. 26, 2022
Temporary Equity And Shareholders Equity [Line Items]
Cash dividend paid							$ 0	$ 0	$ 0	$ 0
Repurchase of common stock											$ 1,800,000	$ 16,900,000
October 2022 Share Repurchase Program [Member]
Temporary Equity And Shareholders Equity [Line Items]
Stock repurchase program, authorized amount														$ 20,000,000
Repurchase of common stock											$ 16,900,000
Repurchase of common stock, shares											5,064,140
November 2023 Share Repurchase Program [Member]
Temporary Equity And Shareholders Equity [Line Items]
Stock repurchase program, authorized amount													$ 25,000,000
Repurchase of common stock											$ 1,800,000
Repurchase of common stock, shares											295,650
Stock repurchase program, remaining authorized repurchase amount							$ 23,200,000				$ 23,200,000
Common Stock [Member]
Temporary Equity And Shareholders Equity [Line Items]
Shares issued							91,000				524,000	14,000
Convertible preferred stock, each stock converted to common stock, shares	1.9717
Common stock shares issued as result of conversion of preferred securities							140,782,000		26,000		140,782,000	26,000
Repurchase of common stock												$ 100,000
Repurchase of common stock, shares											295,000	5,064,000
Redeemable Convertible Preferred Stock [Member]
Temporary Equity And Shareholders Equity [Line Items]
Dividends payable to common stock									$ 0		$ 0	$ 0
Redeemable convertible preferred stock conversion	71,402,607
Consecutive trading days		20 days
Preferred stock as percentage on outstanding common stock on an as-converted basis											30%
Preferred stock cash dividend paid			$ 8,600,000								$ 8,600,000
Preferred stock cash dividend paid per share			$ 0.12
Redeemable Convertible Preferred Stock [Member] | Minimum [Member]
Temporary Equity And Shareholders Equity [Line Items]
Percentage of trading price per share of common stock		175%
Threshold purchase price for acquisition or disposition of assets											$ 100,000,000
Redeemable Convertible Preferred Stock [Member] | Common Stock [Member]
Temporary Equity And Shareholders Equity [Line Items]
Common stock shares issued as result of conversion of preferred securities	140,781,525
Initial Private Placement [Member] | Onex Partners V LP [Member] | Redeemable Convertible Preferred Stock [Member]
Temporary Equity And Shareholders Equity [Line Items]
Shares issued					47,058,332
Aggregate purchase price per share					$ 5.6
Preferred stock accretion rate per annum											7%
Preferred stock, accretion									8,400,000			16,700,000
Preferred stock, aggregate liquidation preference									492,600,000			492,600,000
Preferred stock initial liquidation preference							$ 5.6				$ 5.6
Redeemable convertible preferred stock conversion											1.59
Initial conversion price per share											$ 3.52
Preferred stock, accretion of deemed dividend							$ 2,000,000		$ 10,400,000		$ 12,700,000	$ 20,500,000
Rights Offering [Member] | Onex Partners V LP [Member] | Redeemable Convertible Preferred Stock [Member]
Temporary Equity And Shareholders Equity [Line Items]
Shares issued				1,727,427		69,718,919
Proceeds from issuance of preferred stock				$ 9,700,000		$ 373,300,000
Fees and estimated expenses						$ 17,200,000

Stock-Based Compensation - Addi

Stock-Based Compensation - Additional Information (Detail)		1 Months Ended		3 Months Ended			6 Months Ended
	Jan. 31, 2019 USD ($) Hours shares	Jan. 31, 2020 USD ($)	Jun. 30, 2019 USD ($)	Jun. 30, 2024 USD ($) $ / shares shares	Jun. 30, 2023 USD ($)	Mar. 31, 2019 USD ($)	Jun. 30, 2024 USD ($) $ / shares shares	Jun. 30, 2023 USD ($)	Dec. 31, 2023 USD ($)	Mar. 31, 2020 USD ($)
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Deferred tax benefit for stock-based compensation				$ 300,000	$ 500,000		$ 900,000	$ 1,000,000
Market-based share awards liability				800,000			800,000		$ 800,000
Stock Options [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock-based compensation expense				1,300,000	1,600,000		3,300,000	3,100,000
Unrecognized stock-based compensation expense				9,300,000			$ 9,300,000
Unrecognized stock-based compensation expense weighted average period of recognition							2 years 3 months 29 days
Restricted Stock Units ("RSUs") [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock-based compensation expense				200,000	200,000		$ 600,000	700,000
Unrecognized stock-based compensation expense				700,000			$ 700,000
Unrecognized stock-based compensation expense weighted average period of recognition							1 year 2 months 12 days
Estimated shares of common stock granted | shares							91,000
Weighted-average grant date fair value | $ / shares							$ 6.59
Market-based Share Awards [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock-based compensation expense				$ 0	100,000		$ 0	100,000
Employee right to receive restricted stock equal to maximum price		$ 4,900,000	$ 4,900,000
Estimated weighted average conversion threshold | $ / shares				$ 21.08			$ 21.08
Estimated shares of common stock issue upon conversion | shares				78,041			78,041
Estimated shares of common stock granted | shares							78,041
Weighted-average grant date fair value | $ / shares							$ 24.77
Market-based share awards liability				$ 800,000			$ 800,000		$ 800,000
Fair value at grant date						$ 800,000
Fair value of awards										$ 1,100,000
2019 Employee Stock Purchase Plan [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Percentage of discount received	10
Common stock, reserved for issuance | shares	500,000
Stock-based compensation expense				$ 0	$ 0		$ 0	$ 0
2019 Employee Stock Purchase Plan [Member] | Minimum [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of hours per week worked by employees for eligible | Hours	20
Number of months of service to be completed for eligible	6 months
2019 Employee Stock Purchase Plan [Member] | Maximum [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Amount of compensation	$ 150,000

Stock-Based Compensation - Sche

Stock-Based Compensation - Schedule of Stock Option Activity (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Millions	6 Months Ended	12 Months Ended
	Jun. 30, 2024	Dec. 31, 2023
Share-Based Payment Arrangement [Abstract]
Number of Options Outstanding, Balance	19,791
Number of Options, Granted	270
Number of Options, Exercised	(250)
Number of Options, Forfeited/Expired	(1,803)
Number of Options Outstanding, Balance	18,008	19,791
Number of Options, Exercisable	9,054
Weighted-Average Exercise Price per Option Outstanding, Beginning Balance	$ 6.25
Weighted-Average Exercise Price per Option, Granted	6.09
Weighted-Average Exercise Price per Option, Exercised	5.12
Weighted-Average Exercise Price per Option, Forfeited/Expired	8.3
Weighted-Average Exercise Price per Option Outstanding, Ending Balance	6.06	$ 6.25
Weighted-Average Exercise Price per Option, Exercisable	$ 7.29
Weighted-Average Remaining Contractual Term, Outstanding Balance	6 years 6 months	7 years 4 months 24 days
Weighted-Average Remaining Contractual Term, Exercisable	5 years 1 month 6 days
Aggregate Intrinsic Value, Outstanding Balance	$ 15.7
Aggregate Intrinsic Value, Outstanding Balance	13.3	$ 15.7
Aggregate Intrinsic Value, Exercisable	$ 3

Stock-Based Compensation - Sc_2

Stock-Based Compensation - Schedule of Restricted Stock Units Activity (Detail) - Restricted Stock Units ("RSUs") [Member] shares in Thousands	6 Months Ended
	Jun. 30, 2024 $ / shares shares
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of RSUs Unvested, Beginning Balance | shares	541
Number of RSUs, Granted | shares	91
Number of RSUs, Forfeited | shares	(18)
Number of RSUs, Vested | shares	(346)
Number of RSUs Unvested, Ending Balance | shares	268
Weighted Average Grant Date Fair Value per Share Unvested, Beginning Balance | $ / shares	$ 5.95
Weighted Average Grant Date Fair Value per Share, Granted | $ / shares	6.59
Weighted Average Grant Date Fair Value per Share, Forfeited | $ / shares	5.49
Weighted Average Grant Date Fair Value per Share, Vested | $ / shares	6.35
Weighted Average Grant Date Fair Value per Share Unvested, Ending Balance | $ / shares	$ 5.71

Stock-Based Compensation - Sc_3

Stock-Based Compensation - Schedule of Weighted Average Assumptions Used in Determining Fair Value Performance-based Market Condition Share Awards Outstanding (Detail) - Market-based Share Awards [Member]	6 Months Ended
	Jun. 30, 2024
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Expected volatility	68.20%
Dividend yield	0%
Risk-free interest rate	4.30%
Weighted-average expected term (in years)	9 years 2 months 12 days

Earnings Per Share - Additional

Earnings Per Share - Additional Information (Detail) - 7% Series A Redeemable Convertible Participating Preferred Stock [Member]	6 Months Ended
	Jun. 30, 2024 shares
Earnings Per Share [Line Items]
Preferred stock, shares outstanding	0
Convertible preferred stock, percentage	7%

Earnings Per Share - Computatio

Earnings Per Share - Computation of Basic and Diluted (Loss) Income Per Common Share (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Earnings Per Share [Line Items]
Net (loss) income and comprehensive (loss) income attributable to Emerald Holding, Inc.	$ (2.8)	$ (8.1)	$ 8.2	$ (1)
Accretion to redemption value of redeemable convertible preferred stock	(2)	(10.4)	(12.7)	(20.5)
Net loss and comprehensive loss attributable to Emerald Holding, Inc.common stockholders	$ (4.8)	$ (18.5)	$ (4.5)	$ (21.5)
Weighted average common shares outstanding	155,915	62,868	109,477	65,048
Basic loss per share	$ (0.03)	$ (0.29)	$ (0.04)	$ (0.33)
Net loss and comprehensive loss attributable to Emerald Holding, Inc.common stockholders	$ (4.8)	$ (18.5)	$ (4.5)	$ (21.5)
Diluted weighted average common shares outstanding	155,915	62,868	109,477	65,048
Diluted loss per share	$ (0.03)	$ (0.29)	$ (0.04)	$ (0.33)
Anti-dilutive employee share awards excluded from diluted earnings per share calculation	7,786	20,847	7,857	20,847
Redeemable Convertible Preferred Stock [Member]
Earnings Per Share [Line Items]
Accretion to redemption value of redeemable convertible preferred stock	$ (2)	$ (10.4)	$ (12.7)	$ (20.5)

Income Taxes - Additional Infor

Income Taxes - Additional Information (Detail) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Income Tax Disclosure [Abstract]
U.S. Corporate federal income tax rate			21%
(Benefit from) income taxes	$ (0.7)	$ (4.4)	$ 2.8	$ (1.7)
Effective income tax rates	20%	35.20%	25.50%	63%

Accounts Payable and Other Cu_3

Accounts Payable and Other Current Liabilities - Schedule of Accounts Payable and Other Current Liabilities (Detail) - USD ($) $ in Millions	Jun. 30, 2024	Dec. 31, 2023
Payables and Accruals [Abstract]
Trade payables	$ 12.1	$ 24.1
Other current liabilities	8.4	9.3
Accrued event costs	18.5	6.7
Accrued personnel costs	9.3	6.5
Total accounts payable and other current liabilities	$ 48.3	$ 46.6

Segment Information - Additiona

Segment Information - Additional Information (Detail) - New Chief Operating Decision Maker [Member]	6 Months Ended
	Jun. 30, 2024 Segment
Segment Reporting Information [Line Items]
Number of operating segment	3
Number of reportable segments	1
Number of additional operating segments that do not meet quantitative thresholds for reporting segment	2

Segment Information - Reconcili

Segment Information - Reconciliation of Reportable Segment Revenues, Other Income and Adjusted EBITDA to Net (loss) Income (Detail) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Revenues
Revenues	$ 86	$ 86.5	$ 219.4	$ 208.8
Other Income, net
Other income, net	0	0	1	0
Adjusted EBITDA
Subtotal Adjusted EBITDA	28.2	26.1	84.7	75.2
General corporate and other expenses	(12.9)	(11.5)	(28.6)	(24.1)
Interest expense, net	(9.9)	(9.1)	(19.7)	(16)
Loss on extinguishment of debt	0	(2.3)	0	(2.3)
Depreciation and amortization expense	(7)	(12.9)	(14.1)	(26.4)
Stock-based compensation expense	(1.5)	(1.9)	(4)	(3.9)
Other items	(0.4)	(0.9)	(7.3)	(5.1)
(Loss) income before income taxes	(3.5)	(12.5)	11	(2.7)
Connections [Member]
Revenues
Revenues	75	75.6	198.4	187.8
Other Income, net
Other income, net	0	0	1	0
Adjusted EBITDA
Subtotal Adjusted EBITDA	26.4	25.1	82.6	74.5
All Other [Member]
Revenues
Revenues	11	10.9	21	21
Other Income, net
Other income, net	0	0	0	0
Adjusted EBITDA
Subtotal Adjusted EBITDA	$ 1.8	$ 1	$ 2.1	$ 0.7

Related Party Transactions - Ad

Related Party Transactions - Additional Information (Detail) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023	Dec. 31, 2023
Onex Corporation [Member] | As Converted Common Stock [Member]
Related Party Transaction [Line Items]
Related parties, ownership percentage	90.50%		90.50%
ASM Global [Member] | Related Party [Member]
Related Party Transaction [Line Items]
Other liabilities	$ 100,000		$ 100,000		$ 300,000
ASM Global [Member] | Onex Corporation [Member]
Related Party Transaction [Line Items]
Related parties, ownership percentage	48%		48%
ASM Global [Member] | Cost Of Revenues [Member]
Related Party Transaction [Line Items]
Cost of services facilities and catering	$ 300,000	$ 400,000	$ 700,000	$ 700,000
Convex Group Ltd [Member]
Related Party Transaction [Line Items]
Other liabilities	$ 700,000		$ 700,000		$ 300,000
Convex Group Ltd [Member] | Onex Corporation [Member]
Related Party Transaction [Line Items]
Related parties, ownership percentage	96%		96%
Convex Group Ltd [Member] | Cost Of Revenues [Member]
Related Party Transaction [Line Items]
Selling, general and administrative expense insurance	$ 0	$ 200,000	$ 0	$ 200,000

Subsequent Event - Additional I

Subsequent Event - Additional Information (Detail) - Subsequent Event [Member]	Aug. 06, 2024 $ / shares
Subsequent Event [Line Items]
Dividend declared date	Aug. 06, 2024
Dividend payable per share	$ 0.015
Dividends payable, date to be paid	Aug. 29, 2024
Dividends payable, date of record	Aug. 19, 2024