Debt, net - Schedule of Debt Obligations, Net of Discounts and Deferred Financing Costs (Details) - USD ($)	6 Months Ended	12 Months Ended
	Jun. 30, 2024	Dec. 31, 2023
Debt Instrument [Line Items]
Long-term debt	$ 395,926,000	$ 411,488,000
Unamortized deferred financing costs	(8,588,000)	(9,077,000)
Total debt, net	387,338,000	402,411,000
Insurance | Operating segments
Debt Instrument [Line Items]
Long-term debt	336,639,000	357,138,000
Unamortized deferred financing costs	(8,473,000)	(8,950,000)
Total debt, net	328,166,000	348,188,000
Mortgage | Operating segments
Debt Instrument [Line Items]
Long-term debt	59,287,000	54,350,000
Unamortized deferred financing costs	(115,000)	(127,000)
Total debt, net	59,172,000	54,223,000
Corporate debt
Debt Instrument [Line Items]
Long-term debt	260,500,000	290,000,000
Corporate debt | Revolving credit facility
Debt Instrument [Line Items]
Long-term debt	100,500,000	130,000,000
Corporate debt | Insurance | Operating segments
Debt Instrument [Line Items]
Long-term debt	260,500,000	290,000,000
Corporate debt | Insurance | Operating segments | Revolving credit facility
Debt Instrument [Line Items]
Long-term debt	100,500,000	130,000,000
Corporate debt | Mortgage | Operating segments
Debt Instrument [Line Items]
Long-term debt	0	0
Corporate debt | Mortgage | Operating segments | Revolving credit facility
Debt Instrument [Line Items]
Long-term debt	$ 0	$ 0
Corporate debt | SOFR | Revolving credit facility
Debt Instrument [Line Items]
Basis spread on variable rate	1.50%	1.50%
Asset based debt
Debt Instrument [Line Items]
Long-term debt	$ 135,426,000	$ 121,488,000
Asset based debt | Revolving credit facility
Debt Instrument [Line Items]
Long-term debt	76,139,000	67,138,000
Asset based debt | Insurance | Operating segments
Debt Instrument [Line Items]
Long-term debt	76,139,000	67,138,000
Asset based debt | Insurance | Operating segments | Revolving credit facility
Debt Instrument [Line Items]
Long-term debt	76,139,000	67,138,000
Asset based debt | Mortgage | Operating segments
Debt Instrument [Line Items]
Long-term debt	59,287,000	54,350,000
Asset based debt | Mortgage | Operating segments | Revolving credit facility
Debt Instrument [Line Items]
Long-term debt	$ 0	$ 0
Asset based debt | LIBOR | Revolving credit facility
Debt Instrument [Line Items]
Basis spread on variable rate		2.75%
Asset based debt | SOFR | Revolving credit facility
Debt Instrument [Line Items]
Basis spread on variable rate	2.75%
Preferred trust securities | Corporate debt
Debt Instrument [Line Items]
Long-term debt	$ 35,000,000	$ 35,000,000
Preferred trust securities | Corporate debt | Insurance | Operating segments
Debt Instrument [Line Items]
Long-term debt	35,000,000	35,000,000
Preferred trust securities | Corporate debt | Mortgage | Operating segments
Debt Instrument [Line Items]
Long-term debt	$ 0	$ 0
Preferred trust securities | Corporate debt | LIBOR
Debt Instrument [Line Items]
Basis spread on variable rate	4.10%	4.10%
8.50% Junior subordinated notes | Corporate debt
Debt Instrument [Line Items]
Stated interest rate, percentage	8.50%	8.50%
Long-term debt	$ 125,000,000	$ 125,000,000
8.50% Junior subordinated notes | Corporate debt | Insurance | Operating segments
Debt Instrument [Line Items]
Long-term debt	125,000,000	125,000,000
8.50% Junior subordinated notes | Corporate debt | Mortgage | Operating segments
Debt Instrument [Line Items]
Long-term debt	0	0
Residential mortgage warehouse borrowings | Asset based debt
Debt Instrument [Line Items]
Long-term debt	$ 59,287,000	$ 54,350,000
Weighted average interest rate	7.18%	7.15%
Residential mortgage warehouse borrowings | Asset based debt | Insurance | Operating segments
Debt Instrument [Line Items]
Long-term debt	$ 0	$ 0
Residential mortgage warehouse borrowings | Asset based debt | Mortgage | Operating segments
Debt Instrument [Line Items]
Long-term debt	$ 59,287,000	$ 54,350,000
Residential mortgage warehouse borrowings | Minimum | Asset based debt | SOFR
Debt Instrument [Line Items]
Basis spread on variable rate	1.75%	1.75%
Residential mortgage warehouse borrowings | Maximum | Asset based debt | SOFR
Debt Instrument [Line Items]
Basis spread on variable rate	2.50%	2.75%
Residential mortgage warehouse borrowings, $50,000 LIC due August 2024 | Asset based debt
Debt Instrument [Line Items]
Debt, face amount	$ 50,000,000	$ 50,000,000
Residential mortgage warehouse borrowings, $50,000 LIC due August 2024 | Asset based debt | SOFR
Debt Instrument [Line Items]
Basis spread on variable rate	1.75%	1.75%
Residential mortgage warehouse borrowings, $50,000 LIC due August 2024 | Asset based debt | SOFR, two
Debt Instrument [Line Items]
Basis spread on variable rate	2.00%	2.00%
Residential mortgage warehouse borrowings, $50,000 LIC due August 2024 | Asset based debt | SOFR, three
Debt Instrument [Line Items]
Basis spread on variable rate	2.50%	2.50%
Residential mortgage warehouse borrowings, $25,000 LIC, due September 2024 | Asset based debt
Debt Instrument [Line Items]
Debt, face amount	$ 25,000
Residential mortgage warehouse borrowings, $25,000 LIC, due September 2024 | Asset based debt | SOFR
Debt Instrument [Line Items]
Basis spread on variable rate	1.75%
Floor rate	4.00%
Residential mortgage warehouse borrowings, $25,000 LIC, due September 2024 | Asset based debt | SOFR, two
Debt Instrument [Line Items]
Basis spread on variable rate	2.25%
Residential mortgage warehouse borrowings, $25,000 LIC, due February 2025 | Asset based debt
Debt Instrument [Line Items]
Debt, face amount	$ 25,000,000
Residential mortgage warehouse borrowings, $25,000 LIC, due February 2025 | Asset based debt | SOFR
Debt Instrument [Line Items]
Basis spread on variable rate	1.875%
Residential mortgage warehouse borrowings, $25,000 LIC, due June 2025 | Asset based debt
Debt Instrument [Line Items]
Debt, face amount	$ 25,000,000
Residential mortgage warehouse borrowings, $25,000 LIC, due June 2025 | Asset based debt | SOFR
Debt Instrument [Line Items]
Basis spread on variable rate	1.75%
Residential mortgage warehouse borrowings, $65,000 LIC | Asset based debt
Debt Instrument [Line Items]
Debt, face amount		$ 65,000,000
Residential mortgage warehouse borrowings, $65,000 LIC | Asset based debt | SOFR
Debt Instrument [Line Items]
Basis spread on variable rate		1.75%
Floor rate		4.00%
Residential mortgage warehouse borrowings, $65,000 LIC | Asset based debt | SOFR, two
Debt Instrument [Line Items]
Basis spread on variable rate		2.25%
Residential mortgage warehouse borrowings, $65,000 LIC | Asset based debt | SOFR, three
Debt Instrument [Line Items]
Basis spread on variable rate		2.75%