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Related Party Transactions - Additional Information (Detail) | 12 Months Ended
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Dec. 31, 2023 USD ($) | Dec. 31, 2022 USD ($) | Dec. 31, 2021 USD ($)
Related Party Transaction [Line Items] |  |  |
Company contribution to a multi employer 401K plan at discretionary amount of employee's cash compensation, maximum percentage | 6.00% | 6.00% | 6.00%
Company contribution to a multi employer 401K plan at discretionary amount of employee's cash compensation, amount | $ 425,300 | $ 387,700 | $ 404,300
Deferred compensation, employee contribution, percentage | 2.00% |  |
Deferred compensation, employer contribution, percentage | 3 | 3 | 3
Deferred compensation, company contribution, amount | $ 390,400 | $ 337,900 | $ 238,400
Deferred compensation, cumulative unfunded liability | 3,300,000 | 3,000,000 |
Ancillary costs and expenses | 10,600,000 | 9,600,000 | 8,000,000
Accounts payable, accrued expenses and other liabilities | 57,022,000 | 42,978,000 |
Insurance commissions and fees expense | 562,800 | 286,900 | $ 397,900
Shared Services Agreement | Related Party |  |  |
Related Party Transaction [Line Items] |  |  |
Accounts payable, accrued expenses and other liabilities | $ 1,100,000 | $ 1,200,000 |

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- Definition The carrying amount of the liability as of the balance sheet date to an individual under a deferred compensation arrangement. This amount may be the result of periodic accruals made over the period of active employment, or reflect termination benefits resulting contractual terms or a death benefit. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 710 -SubTopic 10 -Name Accounting Standards Codification -Section 30 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org//1943274/2147483043/710-10-30-1 + Details
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