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Revolving Credit Agreements - Additional Information (Detail) - USD ($) |  |  |  | 9 Months Ended |  |  |
--- | --- | --- | --- | --- | --- | --- | ---
Aug. 09, 2023 | Mar. 29, 2023 | Aug. 08, 2022 | Sep. 30, 2023 | Dec. 31, 2022 | Jul. 18, 2022 | Sep. 30, 2018
Line Of Credit Facility [Line Items] |  |  |  |  |  |  |
Weighted average interest rate |  |  |  | 7.11% |  |  |
Debt instrument default interest rate percentage |  |  |  | 2.00% |  |  |
Daily Simple SOFR [Member] |  |  |  |  |  |  |
Line Of Credit Facility [Line Items] |  |  |  |  |  |  |
Credit facility, floor rate |  |  |  | 0.00% |  |  |
EURIBOR [Member] |  |  |  |  |  |  |
Line Of Credit Facility [Line Items] |  |  |  |  |  |  |
Credit facility, floor rate |  |  |  | 0.00% |  |  |
Maximum [Member] | Daily Simple SOFR [Member] |  |  |  |  |  |  |
Line Of Credit Facility [Line Items] |  |  |  |  |  |  |
Applicable margin rate |  |  |  | 2.65% |  |  |
Maximum [Member] | Base Rate [Member] |  |  |  |  |  |  |
Line Of Credit Facility [Line Items] |  |  |  |  |  |  |
Applicable margin rate |  |  |  | 1.65% |  |  |
Maximum [Member] | EURIBOR [Member] |  |  |  |  |  |  |
Line Of Credit Facility [Line Items] |  |  |  |  |  |  |
Applicable margin rate |  |  |  | 2.75% |  |  |
Minimum [Member] | Daily Simple SOFR [Member] |  |  |  |  |  |  |
Line Of Credit Facility [Line Items] |  |  |  |  |  |  |
Applicable margin rate |  |  |  | 1.65% |  |  |
Minimum [Member] | Base Rate [Member] |  |  |  |  |  |  |
Line Of Credit Facility [Line Items] |  |  |  |  |  |  |
Applicable margin rate |  |  |  | 0.65% |  |  |
Minimum [Member] | EURIBOR [Member] |  |  |  |  |  |  |
Line Of Credit Facility [Line Items] |  |  |  |  |  |  |
Applicable margin rate |  |  |  | 1.75% |  |  |
Wells Fargo Credit Agreement [Member] |  |  |  |  |  |  |
Line Of Credit Facility [Line Items] |  |  |  |  |  |  |
Net leverage ratio | 3 |  |  |  |  |  |
Wells Fargo Credit Agreement [Member] | DDTL Interest Rate [Member] |  |  |  |  |  |  |
Line Of Credit Facility [Line Items] |  |  |  |  |  |  |
Debt instrument default interest rate percentage |  |  |  | 2.00% |  |  |
Commitment fee percentage |  |  |  | 0.25% |  |  |
Wells Fargo Credit Agreement [Member] | Daily Simple SOFR [Member] |  |  |  |  |  |  |
Line Of Credit Facility [Line Items] |  |  |  |  |  |  |
Applicable margin rate |  |  |  | 1.00% |  |  |
Wells Fargo Credit Agreement [Member] | Daily Simple SOFR [Member] | DDTL Interest Rate [Member] |  |  |  |  |  |  |
Line Of Credit Facility [Line Items] |  |  |  |  |  |  |
Credit facility, floor rate |  |  |  | 0.00% |  |  |
Applicable margin rate |  |  |  | 1.00% |  |  |
Wells Fargo Credit Agreement [Member] | Maximum [Member] |  |  |  |  |  |  |
Line Of Credit Facility [Line Items] |  |  |  |  |  |  |
Commitment fee percentage |  |  |  | 0.25% |  |  |
Wells Fargo Credit Agreement [Member] | Maximum [Member] | Daily Simple SOFR [Member] | DDTL Interest Rate [Member] |  |  |  |  |  |  |
Line Of Credit Facility [Line Items] |  |  |  |  |  |  |
Applicable margin rate |  |  |  | 2.90% |  |  |
Wells Fargo Credit Agreement [Member] | Maximum [Member] | Base Rate [Member] | DDTL Interest Rate [Member] |  |  |  |  |  |  |
Line Of Credit Facility [Line Items] |  |  |  |  |  |  |
Applicable margin rate |  |  |  | 1.90% |  |  |
Wells Fargo Credit Agreement [Member] | Minimum [Member] |  |  |  |  |  |  |
Line Of Credit Facility [Line Items] |  |  |  |  |  |  |
Commitment fee percentage |  |  |  | 0.20% |  |  |
Wells Fargo Credit Agreement [Member] | Minimum [Member] | Daily Simple SOFR [Member] | DDTL Interest Rate [Member] |  |  |  |  |  |  |
Line Of Credit Facility [Line Items] |  |  |  |  |  |  |
Applicable margin rate |  |  |  | 1.90% |  |  |
Wells Fargo Credit Agreement [Member] | Minimum [Member] | Base Rate [Member] | DDTL Interest Rate [Member] |  |  |  |  |  |  |
Line Of Credit Facility [Line Items] |  |  |  |  |  |  |
Applicable margin rate |  |  |  | 0.90% |  |  |
Wells Fargo Credit Agreement [Member] | Federal Reserve Bank Advances [Member] |  |  |  |  |  |  |
Line Of Credit Facility [Line Items] |  |  |  |  |  |  |
Applicable margin rate |  |  |  | 1.00% |  |  |
Wells Fargo Credit Agreement [Member] | Federal Reserve Bank Advances [Member] | DDTL Interest Rate [Member] |  |  |  |  |  |  |
Line Of Credit Facility [Line Items] |  |  |  |  |  |  |
Applicable margin rate |  |  |  | 1.00% |  |  |
Wells Fargo Credit Agreement Amendment [Member] |  |  |  |  |  |  |
Line Of Credit Facility [Line Items] |  |  |  |  |  |  |
Secured revolving credit facility amount | $ 50,000,000 |  |  |  |  |  |
External debt capped basket amount amended | 30,000,000 |  |  |  |  |  |
Aggregate principal amount | $ 172,500,000 |  |  |  |  |  |
Wells Fargo Credit Agreement Amendment [Member] | Maximum [Member] |  |  |  |  |  |  |
Line Of Credit Facility [Line Items] |  |  |  |  |  |  |
Net leverage ratio | 5 |  |  |  |  |  |
Wells Fargo Credit Agreement Amendment [Member] | Minimum [Member] |  |  |  |  |  |  |
Line Of Credit Facility [Line Items] |  |  |  |  |  |  |
Net leverage ratio | 3.25 |  |  |  |  |  |
Wells Fargo Credit Agreement Amendment [Member] | Delayed Draw Term Loan [Member] |  |  |  |  |  |  |
Line Of Credit Facility [Line Items] |  |  |  |  |  |  |
Revolving line of credit | $ 50,000,000 |  |  |  |  |  |
Percentage available for borrowing | 60.00% |  |  |  |  |  |
Nord/LB Revolving Line of Credit [Member] |  |  |  |  |  |  |
Line Of Credit Facility [Line Items] |  |  |  |  |  |  |
Revolving line of credit |  | $ 16,100,000 |  | $ 10,600,000 |  |  |
Nord/LB Revolving Line of Credit [Member] | Euro Short Term Rate [Member] |  |  |  |  |  |  |
Line Of Credit Facility [Line Items] |  |  |  |  |  |  |
Applicable margin rate |  | 1.94% |  |  |  |  |
Prior Nord/Lb Revolving Line Of Credit [Member] |  |  |  |  |  |  |
Line Of Credit Facility [Line Items] |  |  |  |  |  |  |
Revolving line of credit |  |  | $ 16,100,000 |  |  |  |
Available for future borrowings |  |  | $ 0 |  |  |  |
Line of credit maturity period month and year |  |  | 2023-08 |  |  |  |
Prior Nord/Lb Revolving Line Of Credit [Member] | Euro Short Term Rate [Member] |  |  |  |  |  |  |
Line Of Credit Facility [Line Items] |  |  |  |  |  |  |
Applicable margin rate |  |  | 1.40% |  |  |  |
DZ Bank Revolving Line Of Credit [Member] |  |  |  |  |  |  |
Line Of Credit Facility [Line Items] |  |  |  |  |  |  |
Revolving line of credit |  |  |  |  | $ 9,100,000 |  |
Available for future borrowings |  |  |  |  | $ 0 |  |
Interest rate |  |  |  |  | 2.80% |  |
Syndicated Credit Agreement Working Capital Line of Credit [Member] |  |  |  |  |  |  |
Line Of Credit Facility [Line Items] |  |  |  |  |  |  |
Available for future borrowings |  |  |  |  |  |  | $ 0
Acorn HoldCo, Inc., [Member] | Wells Fargo Credit Agreement [Member] |  |  |  |  |  |  |
Line Of Credit Facility [Line Items] |  |  |  |  |  |  |
Secured revolving credit facility amount |  |  |  | 400,000,000 |  | $ 100,000,000 |
Revolving line of credit |  |  |  | 200,000,000 |  |  |
Credit facility, average outstanding amount |  |  |  | 2,200,000 |  |  |
Letters of credit may be issued |  |  |  | 25,000,000 |  |  |
Available for future borrowings |  |  |  | $ 197,800,000 |  |  |
Acorn HoldCo, Inc., [Member] | Wells Fargo Credit Agreement [Member] | Maximum [Member] |  |  |  |  |  |  |
Line Of Credit Facility [Line Items] |  |  |  |  |  |  |
Credit agreement current borrowing capacity |  |  |  |  |  | $ 400,000,000 |
Bayerische Landesbank and Deutsche Bank [Member] | Syndicated Credit Agreement Working Capital Line of Credit [Member] |  |  |  |  |  |  |
Line Of Credit Facility [Line Items] |  |  |  |  |  |  |
Secured revolving credit facility amount |  |  |  |  |  |  | $ 10,700,000
First Quarter Ending Springing Covenant Period [Member] | Wells Fargo Credit Agreement Amendment [Member] |  |  |  |  |  |  |
Line Of Credit Facility [Line Items] |  |  |  |  |  |  |
Net leverage ratio | 4 |  |  |  |  |  |
Second Quarter Ending Springing Covenant Event [Member] | Wells Fargo Credit Agreement Amendment [Member] |  |  |  |  |  |  |
Line Of Credit Facility [Line Items] |  |  |  |  |  |  |
Net leverage ratio | 3.75 |  |  |  |  |  |
Third and Fourth Quarters Ending Springing Covenant Event [Member] | Wells Fargo Credit Agreement Amendment [Member] |  |  |  |  |  |  |
Line Of Credit Facility [Line Items] |  |  |  |  |  |  |
Net leverage ratio | 3.5 |  |  |  |  |  |
Springing Covenant Event [Member] | Wells Fargo Credit Agreement Amendment [Member] |  |  |  |  |  |  |
Line Of Credit Facility [Line Items] |  |  |  |  |  |  |
Net leverage ratio | 3.5 |  |  |  |  |  |

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- Definition The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(22)) -SubTopic 10 -Topic 210 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 944 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(a)(16)(a)(2)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479440/944-210-S99-1 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 942 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(16)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479853/942-210-S99-1 + Details
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