Portfolio Loans - Narrative (Details) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2023 USD ($)	Mar. 31, 2022 USD ($) contract	Dec. 31, 2022 USD ($)
Accounts, Notes, Loans and Financing Receivable [Line Items]
Net deferred loan origination (fees) costs	$ 13,700		$ 14,000
Net accretable purchase accounting adjustments	(5,500)		(5,900)
Gross interest income that would have been recorded if impaired loans had been current	400	$ 200
Amount of interest collected and recognized on a cash basis		$ 400
TDRs subsequently classified as non-performing and had payment defaults | contract		0
Collateral dependent loans secured by real estate or business assets	13,300		14,000
Loans in the process of foreclosure	1,100
Performing Financial Instruments
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled debt restructuring			3,000
Nonperforming Financial Instruments
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled debt restructuring			500
Retail real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans purchased	0	$ 0
Commercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans designated as TDRs | contract		0
Maximum | Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Limit where loans are processed through an expedited underwriting process	1,000
Watch | Total commercial loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Limit above which loans are annually reviewed	1,000
Special Mention | Total commercial loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Limit above which loans are annually reviewed	350
PPP Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized cost of the loans outstanding	$ 800		$ 800