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Schedule I - Condensed Financial Information of Registrant Guarantees and Restrictions - Additional Information (Detail) - USD ($) | 3 Months Ended | 12 Months Ended |  |  |
--- | --- | --- | --- | --- | ---
Mar. 31, 2024 | Dec. 31, 2023 | Sep. 30, 2023 | Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022 | May 02, 2024 | Dec. 31, 2021 | May 22, 2017
Condensed Financial Information Of Parent Company Only [Line Items] |  |  |  |  |  |  |  |  |
Cash dividend paid |  |  |  |  | $ 0 | $ 0 |  |  |
Common Stock [Member] |  |  |  |  |  |  |  |  |
Condensed Financial Information Of Parent Company Only [Line Items] |  |  |  |  |  |  |  |  |
Convertible preferred stock, each stock converted to common stock, shares |  |  |  |  |  |  | 1.9717 |  |
Redeemable Convertible Preferred Stock [Member] |  |  |  |  |  |  |  |  |
Condensed Financial Information Of Parent Company Only [Line Items] |  |  |  |  |  |  |  |  |
Temporary equity, shares outstanding |  | 71,403,000 |  |  | 71,403,000 | 71,417,000 |  | 71,442,000 |
Cash dividend paid | $ 8,600,000 | $ 8,600,000 | $ 8,600,000 |  |  |  |  |  |
Parent Company [Member] |  |  |  |  |  |  |  |  |
Condensed Financial Information Of Parent Company Only [Line Items] |  |  |  |  |  |  |  |  |
Restricted net assets of Emerald and subsidiaries exceed consolidated net assets as a percentage |  |  |  | 25.00% |  |  |  |  |
Parent Company [Member] | Common Stock [Member] |  |  |  |  |  |  |  |  |
Condensed Financial Information Of Parent Company Only [Line Items] |  |  |  |  |  |  |  |  |
Convertible preferred stock, each stock converted to common stock, shares |  |  |  |  |  |  | 1.9717 |  |
Parent Company [Member] | Redeemable Convertible Preferred Stock [Member] |  |  |  |  |  |  |  |  |
Condensed Financial Information Of Parent Company Only [Line Items] |  |  |  |  |  |  |  |  |
Temporary equity, shares outstanding |  |  |  |  |  |  | 0 |  |
Parent Company [Member] | Amended and Restated Senior Secured Credit Facilities [Member] |  |  |  |  |  |  |  |  |
Condensed Financial Information Of Parent Company Only [Line Items] |  |  |  |  |  |  |  |  |
Builder basket percentage based on consolidated net income and certain other amounts |  |  |  |  |  |  |  |  | 50.00%
Fixed charge coverage ratio |  |  |  |  |  |  |  |  | 200.00%

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- Definition Number of shares issued for each share of convertible preferred stock that is converted. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(27)) -SubTopic 10 -Topic 210 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(28)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 3 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481112/505-10-50-3 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 505 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481112/505-10-50-6 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Topic 505 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 16 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481112/505-10-50-16 + Details
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- Definition The number of securities classified as temporary equity that have been issued and are held by the entity's shareholders. Securities outstanding equals securities issued minus securities held in treasury. Temporary equity is a security with redemption features that are outside the control of the issuer, is not classified as an asset or liability in conformity with GAAP, and is not mandatorily redeemable. Includes any type of security that is redeemable at a fixed or determinable price or on a fixed or determinable date or dates, is redeemable at the option of the holder, or has conditions for redemption which are not solely within the control of the issuer. If convertible, the issuer does not control the actions or events necessary to issue the maximum number of shares that could be required to be delivered under the conversion option if the holder exercises the option to convert the stock to another class of equity. If the security is a warrant or a rights issue, the warrant or rights issue is considered to be temporary equity if the issuer cannot demonstrate that it would be able to deliver upon the exercise of the option by the holder in all cases. Includes stock with put option held by ESOP and stock redeemable by holder only in the event of a change in control of the issuer. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(27)(b)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1 + Details
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