Fair Value of Assets and Liabilities - Not Measured at Fair Value (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Assets
Loans held for sale at fair value	$ 142,370	$ 121,902
Other assets	6,124
Total assets	730,709	1,007,115
Liabilities
Other liabilities	12,911	12,270
Total liabilities	308,081	801,852
Level 1 Inputs
Assets
Loans held for sale at fair value	0	0
Other assets	0
Total assets	0	0
Liabilities
Other liabilities	0	0
Total liabilities	0	0
Level 2 Inputs
Assets
Loans held for sale at fair value	0	0
Other assets	2,812
Total assets	236,295	75,572
Liabilities
Other liabilities	0	0
Total liabilities	0	0
Level 3 Inputs
Assets
Loans held for sale at fair value	142,370	121,902
Other assets	3,312
Total assets	494,414	931,543
Liabilities
Other liabilities	12,911	12,270
Total liabilities	308,081	801,852
Carrying Amount
Assets
Loans held for sale at fair value	248,878
Loans and leases held for investment, net	2,754,737
Other assets	18,274	914
Total cash and cash equivalents		524,963
Restricted cash		103,522
Total assets	3,021,889	629,399
Liabilities
Deposits	68,405
Short-term borrowings	27,780	104,989
Advances from PPPLF	271,933
Other long-term debt	15,455
Other liabilities	51,655	57,536
Total liabilities	435,228	162,525
Balance at Fair Value
Assets
Loans held for sale at fair value	251,101
Loans and leases held for investment, net	2,964,691
Other assets	18,274	914
Total cash and cash equivalents		524,963
Restricted cash		103,522
Total assets	3,234,066	629,399
Liabilities
Deposits	68,405
Short-term borrowings	27,780	104,989
Advances from PPPLF	271,933
Other long-term debt	15,455
Other liabilities	51,655	57,536
Total liabilities	435,228	162,525
Balance at Fair Value | Level 1 Inputs
Assets
Loans held for sale at fair value	0
Loans and leases held for investment, net	0
Other assets	0	0
Total cash and cash equivalents		0
Restricted cash		0
Total assets	0	0
Liabilities
Deposits	0
Short-term borrowings	0	0
Advances from PPPLF	0
Other long-term debt	0
Other liabilities	0	0
Total liabilities	0	0
Balance at Fair Value | Level 2 Inputs
Assets
Loans held for sale at fair value	0
Loans and leases held for investment, net	0
Other assets	15,630	914
Total cash and cash equivalents		524,963
Restricted cash		103,522
Total assets	15,630	629,399
Liabilities
Deposits	0
Short-term borrowings	17,595	65,121
Advances from PPPLF	0
Other long-term debt	0
Other liabilities	22,187	43,984
Total liabilities	39,782	109,105
Balance at Fair Value | Level 3 Inputs
Assets
Loans held for sale at fair value	251,101
Loans and leases held for investment, net	2,964,691
Other assets	2,644	0
Total cash and cash equivalents		0
Restricted cash		0
Total assets	3,218,436	0
Liabilities
Deposits	68,405
Short-term borrowings	10,185	39,868
Advances from PPPLF	271,933
Other long-term debt	15,455
Other liabilities	29,468	13,552
Total liabilities	$ 395,446	$ 53,420