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Differences in Tax Provision for Financial Statement Purposes and Expected Tax Provision at Weighted Average Tax Rate (Detail) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2023 | Sep. 30, 2022 | Sep. 30, 2023 | Sep. 30, 2022
Income Tax Disclosure [Abstract] |  |  |  |
Expected tax provision at weighted average tax rate | $ 1,987 | $ 6,549 | $ 5,090 | $ 44
Adjustments: |  |  |  |
Dividend exclusion | (16) | (20) | (54) | (66)
Change in tax status | 0 | 700 | 0 | 700
Parent (income) loss treated as partnership for tax | (326) | 101 | (668) | 2,171
Other | 118 | 108 | 339 | 550
Total income tax expense | $ 1,763 | $ 7,438 | $ 4,707 | $ 3,399
Expected tax provision at weighted average | 21.00% | 21.00% | 21.00% | 21.00%
Adjustments: |  |  |  |
Dividend exclusion, % of Pre-Tax Income | (0.20%) | (0.10%) | (0.20%) | (31.40%)
Change in tax status, % of Pre-Tax Income | 0.00% | 2.40% | 0.00% | 333.30%
Parent (income) loss treated as partnership for tax, % of Pre-Tax Income | (3.40%) | 0.30% | (2.80%) | 1033.80%
Other, % of Pre-Tax Income | 1.20% | 0.30% | 1.40% | 261.90%
Effective income tax expense (benefit) | 18.60% | 23.90% | 19.40% | 1618.60%

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