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Sale of Renewal Rights - Additional Information (Detail) - USD ($) $ in Thousands				12 Months Ended
	Aug. 08, 2022	Nov. 30, 2021	Oct. 26, 2021	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Unearned premiums				$ 269,353	$ 316,566
Payments of sublease expected amount				331	55	$ 0
Impairment of goodwill				578	1,123
Impairment loss on software				508	2,000	0
Impairment of lease cost				1,337	1,515	$ 0
American Reliable | Everett Cash Mutual Insurance
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Acquisition amount				10,000
Renewal Rights Related to Manufactured and Dwelling Homes Business
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Gross proceeds from Sale of Renewal Rights			$ 28,000
Net capital amount received			65,000
Unearned premiums		$ 33,800	42,000
Payments of sublease expected amount			$ 2,400
Percentage of risk assumed for policies under renewal rights agreement		100.00%	100.00%
Impairment of intangible assets					200
Ceding commission percentage		40.00%
Claims administration fee		4.00%
Renewal Rights Related to Manufactured and Dwelling Homes Business | Other Income
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Gross proceeds from Sale of Renewal Rights					28,000
Renewal Rights Related to Manufactured and Dwelling Homes Business | Corporate and Other Operating Expenses
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Impairment of goodwill					1,100
Impairment loss on software					2,000
Impairment of lease cost				600	1,500
Legal expenses and merger and acquisition fees					$ 2,400
Renewal Rights Related to Manufactured and Dwelling Homes Business | Early Termination Clause
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Payments of sublease expected amount				1,600
Renewal Rights Related to Farm Ranch and Stable Business
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Impairment of intangible assets				$ 5,100
Impairment, Intangible Asset, Statement of Income or Comprehensive Income [Extensible Enumeration]				Corporate and other operating expenses
Renewal Rights Related to Farm Ranch and Stable Business | Other Income
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Gross proceeds from Sale of Renewal Rights	$ 30,000			$ 0
Renewal Rights Related to Farm Ranch and Stable Business | Corporate and Other Operating Expenses
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Impairment of goodwill				600
Impairment loss on software				500
Impairment of lease cost				500
Legal expenses and merger and acquisition fees				$ 2,500

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