Fair Value of Financial Instruments - Schedule of Fair Value Hierarchies for Financial Assets and Liabilities Measured on a Recurring Basis (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Assets
Available for sale securities, at fair value, net of allowance for credit losses	$ 577,448	$ 377,133
Loans, at fair value	105,583	90,732
Equity securities	138,483	123,838
Derivative assets	8,196	11,529
Total other investments, at fair value	168,656	219,701
Mortgage servicing rights	29,833	14,758
Liabilities
Securities sold, not yet purchased	242	46,637
Derivative liabilities	2,141	2,090
Fixed income ETFs
Assets
Equity securities	53,154	63,875
Other equity securities
Assets
Equity securities	50,515	28,885
Invesque
Assets
Equity securities	34,814	31,078
Significant unobservable inputs Level 3
Assets
Total assets	57,084	23,965
Liabilities
Contingent consideration payable	200	200
Recurring | Quoted prices in active markets Level 1
Assets
Available for sale securities, at fair value, net of allowance for credit losses	2,696	1,355
Loans, at fair value	0	0
Derivative assets	113	2,090
Total other investments, at fair value	113	2,090
Mortgage servicing rights	0	0
Total assets	140,086	127,248
Liabilities
Securities sold, not yet purchased	242	16,479
Derivative liabilities	0	0
Contingent consideration payable	0	0
Total liabilities	242	16,479
Recurring | Quoted prices in active markets Level 1 | U.S. Treasury securities and obligations of U.S. government authorities and agencies
Assets
Available for sale securities, at fair value, net of allowance for credit losses	0	0
Recurring | Quoted prices in active markets Level 1 | Obligations of state and political subdivisions
Assets
Available for sale securities, at fair value, net of allowance for credit losses	0	0
Recurring | Quoted prices in active markets Level 1 | Obligations of foreign governments
Assets
Available for sale securities, at fair value, net of allowance for credit losses	0	0
Recurring | Quoted prices in active markets Level 1 | Certificates of deposit
Assets
Available for sale securities, at fair value, net of allowance for credit losses	2,696	1,355
Recurring | Quoted prices in active markets Level 1 | Asset backed securities
Assets
Available for sale securities, at fair value, net of allowance for credit losses	0	0
Recurring | Quoted prices in active markets Level 1 | Corporate securities
Assets
Available for sale securities, at fair value, net of allowance for credit losses	0	0
Recurring | Quoted prices in active markets Level 1 | Corporate loans
Assets
Loans, at fair value	0	0
Recurring | Quoted prices in active markets Level 1 | Mortgage loans held for sale
Assets
Mortgage loans held for sale	0	0
Recurring | Quoted prices in active markets Level 1 | Dividends from equity securities
Assets
Equity securities	137,277	123,803
Recurring | Quoted prices in active markets Level 1 | Dividends from equity securities | Fixed income ETFs
Assets
Equity securities	53,154	63,875
Recurring | Quoted prices in active markets Level 1 | Dividends from equity securities | Other equity securities
Assets
Equity securities	49,309	28,850
Recurring | Quoted prices in active markets Level 1 | Dividends from equity securities | Invesque
Assets
Equity securities	34,814	31,078
Recurring | Quoted prices in active markets Level 1 | Corporate bonds
Assets
Corporate bonds	0	0
Recurring | Quoted prices in active markets Level 1 | Trade claims
Assets
Trade claims	0
Recurring | Quoted prices in active markets Level 1 | CLOs
Assets
Other investments	0	0
Recurring | Other significant observable inputs Level 2
Assets
Available for sale securities, at fair value, net of allowance for credit losses	574,137	374,920
Loans, at fair value	103,486	82,937
Derivative assets	569	232
Total other investments, at fair value	39,534	106,009
Mortgage servicing rights	0	0
Total assets	717,157	563,866
Liabilities
Securities sold, not yet purchased	0	30,158
Derivative liabilities	2,141	2,090
Contingent consideration payable	0	0
Total liabilities	2,141	32,248
Recurring | Other significant observable inputs Level 2 | U.S. Treasury securities and obligations of U.S. government authorities and agencies
Assets
Available for sale securities, at fair value, net of allowance for credit losses	351,178	196,303
Recurring | Other significant observable inputs Level 2 | Obligations of state and political subdivisions
Assets
Available for sale securities, at fair value, net of allowance for credit losses	58,660	44,350
Recurring | Other significant observable inputs Level 2 | Obligations of foreign governments
Assets
Available for sale securities, at fair value, net of allowance for credit losses	2,590	3,992
Recurring | Other significant observable inputs Level 2 | Certificates of deposit
Assets
Available for sale securities, at fair value, net of allowance for credit losses	0	0
Recurring | Other significant observable inputs Level 2 | Asset backed securities
Assets
Available for sale securities, at fair value, net of allowance for credit losses	16,832	35,334
Recurring | Other significant observable inputs Level 2 | Corporate securities
Assets
Available for sale securities, at fair value, net of allowance for credit losses	144,877	94,941
Recurring | Other significant observable inputs Level 2 | Corporate loans
Assets
Loans, at fair value	5,002	0
Recurring | Other significant observable inputs Level 2 | Mortgage loans held for sale
Assets
Mortgage loans held for sale	98,484	82,937
Recurring | Other significant observable inputs Level 2 | Dividends from equity securities
Assets
Equity securities	0	0
Recurring | Other significant observable inputs Level 2 | Dividends from equity securities | Fixed income ETFs
Assets
Equity securities	0	0
Recurring | Other significant observable inputs Level 2 | Dividends from equity securities | Other equity securities
Assets
Equity securities	0	0
Recurring | Other significant observable inputs Level 2 | Dividends from equity securities | Invesque
Assets
Equity securities	0	0
Recurring | Other significant observable inputs Level 2 | Corporate bonds
Assets
Corporate bonds	38,965	105,777
Recurring | Other significant observable inputs Level 2 | Trade claims
Assets
Trade claims	0
Recurring | Other significant observable inputs Level 2 | CLOs
Assets
Other investments	0	0
Recurring | Significant unobservable inputs Level 3
Assets
Available for sale securities, at fair value, net of allowance for credit losses	615	858
Loans, at fair value	2,097	7,795
Derivative assets	7,514	9,207
Total other investments, at fair value	27,692	10,009
Mortgage servicing rights	29,833	14,758
Total assets	61,443	33,455
Liabilities
Securities sold, not yet purchased	0	0
Derivative liabilities	0	0
Contingent consideration payable	200	200
Total liabilities	200	200
Recurring | Significant unobservable inputs Level 3 | U.S. Treasury securities and obligations of U.S. government authorities and agencies
Assets
Available for sale securities, at fair value, net of allowance for credit losses	0	0
Recurring | Significant unobservable inputs Level 3 | Obligations of state and political subdivisions
Assets
Available for sale securities, at fair value, net of allowance for credit losses	0	0
Recurring | Significant unobservable inputs Level 3 | Obligations of foreign governments
Assets
Available for sale securities, at fair value, net of allowance for credit losses	0	0
Recurring | Significant unobservable inputs Level 3 | Certificates of deposit
Assets
Available for sale securities, at fair value, net of allowance for credit losses	0	0
Recurring | Significant unobservable inputs Level 3 | Asset backed securities
Assets
Available for sale securities, at fair value, net of allowance for credit losses	615	858
Recurring | Significant unobservable inputs Level 3 | Corporate securities
Assets
Available for sale securities, at fair value, net of allowance for credit losses	0	0
Recurring | Significant unobservable inputs Level 3 | Corporate loans
Assets
Loans, at fair value	2,097	7,795
Recurring | Significant unobservable inputs Level 3 | Mortgage loans held for sale
Assets
Mortgage loans held for sale	0	0
Recurring | Significant unobservable inputs Level 3 | Dividends from equity securities
Assets
Equity securities	1,206	35
Recurring | Significant unobservable inputs Level 3 | Dividends from equity securities | Fixed income ETFs
Assets
Equity securities	0	0
Recurring | Significant unobservable inputs Level 3 | Dividends from equity securities | Other equity securities
Assets
Equity securities	1,206	35
Recurring | Significant unobservable inputs Level 3 | Dividends from equity securities | Invesque
Assets
Equity securities	0	0
Recurring | Significant unobservable inputs Level 3 | Corporate bonds
Assets
Corporate bonds	0	0
Recurring | Significant unobservable inputs Level 3 | Trade claims
Assets
Trade claims	19,737	0
Recurring | Significant unobservable inputs Level 3 | CLOs
Assets
Other investments	441	802
Fair Value | Other significant observable inputs Level 2
Assets
Total assets	110,845	79,778
Fair Value | Significant unobservable inputs Level 3
Liabilities
Total liabilities	419,599	392,951
Fair Value | Recurring
Assets
Available for sale securities, at fair value, net of allowance for credit losses	577,448	377,133
Loans, at fair value	105,583	90,732
Derivative assets	8,196	11,529
Total other investments, at fair value	67,339	118,108
Mortgage servicing rights	29,833	14,758
Total assets	918,686	724,569
Liabilities
Securities sold, not yet purchased	242	46,637
Derivative liabilities	2,141	2,090
Contingent consideration payable	200	200
Total liabilities	2,583	48,927
Fair Value | Recurring | U.S. Treasury securities and obligations of U.S. government authorities and agencies
Assets
Available for sale securities, at fair value, net of allowance for credit losses	351,178	196,303
Fair Value | Recurring | Obligations of state and political subdivisions
Assets
Available for sale securities, at fair value, net of allowance for credit losses	58,660	44,350
Fair Value | Recurring | Obligations of foreign governments
Assets
Available for sale securities, at fair value, net of allowance for credit losses	2,590	3,992
Fair Value | Recurring | Certificates of deposit
Assets
Available for sale securities, at fair value, net of allowance for credit losses	2,696	1,355
Fair Value | Recurring | Asset backed securities
Assets
Available for sale securities, at fair value, net of allowance for credit losses	17,447	36,192
Fair Value | Recurring | Corporate securities
Assets
Available for sale securities, at fair value, net of allowance for credit losses	144,877	94,941
Fair Value | Recurring | Corporate loans
Assets
Loans, at fair value	7,099	7,795
Fair Value | Recurring | Mortgage loans held for sale
Assets
Mortgage loans held for sale	98,484	82,937
Fair Value | Recurring | Dividends from equity securities
Assets
Equity securities	138,483	123,838
Fair Value | Recurring | Dividends from equity securities | Fixed income ETFs
Assets
Equity securities	53,154	63,875
Fair Value | Recurring | Dividends from equity securities | Other equity securities
Assets
Equity securities	50,515	28,885
Fair Value | Recurring | Dividends from equity securities | Invesque
Assets
Equity securities	34,814	31,078
Fair Value | Recurring | Corporate bonds
Assets
Corporate bonds	38,965	105,777
Fair Value | Recurring | Trade claims
Assets
Trade claims	19,737
Fair Value | Recurring | CLOs
Assets
Other investments	$ 441	$ 802