Fair Value Measurements - Summary of Subordinated Debt (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Term loan, due December 31, 2024 | Carrying Value
Debt Instrument [Line Items]
Long-term debt	$ 0	$ 50,000
Term loan, due December 31, 2024 | Fair Value
Debt Instrument [Line Items]
Long-term debt	0	50,000
Revolving credit facility | Carrying Value
Debt Instrument [Line Items]
Long-term debt	50,000	0
Revolving credit facility | Fair Value
Debt Instrument [Line Items]
Long-term debt	50,000	0
Notes payable | Carrying Value
Debt Instrument [Line Items]
Long-term debt	50,000	50,000
Notes payable | Fair Value
Debt Instrument [Line Items]
Long-term debt	50,000	50,000
Junior subordinated interest debentures | Carrying Value
Debt Instrument [Line Items]
Long-term debt	59,149	59,137
Junior subordinated interest debentures | Fair Value
Debt Instrument [Line Items]
Long-term debt	59,794	59,794
Unsecured subordinated notes | Carrying Value
Debt Instrument [Line Items]
Long-term debt	19,480	19,472
Unsecured subordinated notes | Fair Value
Debt Instrument [Line Items]
Long-term debt	18,622	18,934
Subordinated debt, net of debt issuance costs | Carrying Value
Debt Instrument [Line Items]
Long-term debt	78,629	78,609
Subordinated debt, net of debt issuance costs | Fair Value
Debt Instrument [Line Items]
Long-term debt	$ 78,416	$ 78,728