Industry Segment Information (Details)	3 Months Ended
	Mar. 31, 2023 USD ($) segment	Mar. 31, 2022 USD ($)	Dec. 31, 2022 USD ($)
Segment Reporting [Abstract]
Number of reportable segments | segment	2
Interest Income (Expense), after Provision for Loan Loss [Abstract]
Fee income	$ 32,107,000	$ 30,430,000
Interest income	20,142,000	12,126,000
Interest expense	3,244,000	223,000
Intersegment income (expense)	16,898,000	11,903,000
Tax-equivalized pre-tax income	8,973,000	10,275,000
Goodwill	17,309,000	14,262,000	$ 17,309,000
Other intangible assets, net	3,931,000	2,429,000
Total assets	2,427,389,000	2,422,043,000	$ 2,573,023,000
Average funding sources	2,239,927,000	2,255,227,000
Tax equivalent adjustment	321,000	446,000
Corporate, Eliminations and Other
Interest Income (Expense), after Provision for Loan Loss [Abstract]
Fee income	319,000	293,000
Interest income	(2,482,000)	(1,077,000)
Interest expense	(2,287,000)	(8,000)
Intersegment income (expense)	0	0
Tax-equivalized pre-tax income	123,000	(776,000)
Goodwill	0	0
Other intangible assets, net	0	0
Total assets	(266,591,000)	(4,324,000)
Average funding sources	0	0
Information services payment and processing revenue | Operating Segments
Interest Income (Expense), after Provision for Loan Loss [Abstract]
Fee income	31,077,000	29,184,000
Interest income	9,447,000	4,350,000
Interest expense	98,000	6,000
Intersegment income (expense)	(914,000)	(764,000)
Tax-equivalized pre-tax income	4,991,000	5,890,000
Goodwill	17,173,000	14,126,000
Other intangible assets, net	3,931,000	2,429,000
Total assets	1,526,001,000	1,338,342,000
Average funding sources	1,357,035,000	1,288,407,000
Banking Services | Operating Segments
Interest Income (Expense), after Provision for Loan Loss [Abstract]
Fee income	711,000	953,000
Interest income	13,177,000	8,853,000
Interest expense	5,433,000	225,000
Intersegment income (expense)	914,000	764,000
Tax-equivalized pre-tax income	3,859,000	5,161,000
Goodwill	136,000	136,000
Other intangible assets, net	0	0
Total assets	1,167,979,000	1,088,025,000
Average funding sources	$ 882,892,000	$ 966,820,000