Industry Segment Information (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2022 USD ($) segment	Dec. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)
Segment Reporting [Abstract]
Number of reportable segments | segment	2
Segment Reporting Information [Line Items]
Fee income	$ 124,982	$ 109,691	$ 100,441
Interest income	64,015	47,370	49,576
Interest expense	3,482	1,171	2,362
Intersegment income (expense)	58,844	44,326	45,325
Tax-equivalized pre-tax income	44,589	35,694	32,230
Goodwill	17,309	14,262	14,262
Other intangible assets, net	4,126	2,564	3,423
Total assets	2,573,023	2,554,901	2,203,235
Average funding sources	2,332,701	2,026,511	1,640,448
Tax equivalent adjustment	1,700	1,900	1,900
Corporate, Eliminations and Other
Segment Reporting Information [Line Items]
Fee income	1,142	1,608	1,286
Interest income	(5,426)	(1,694)	(261)
Interest expense	(827)	0	0
Intersegment income (expense)	0	0	0
Tax-equivalized pre-tax income	(3,455)	(756)	1,027
Goodwill	0	0	0
Other intangible assets, net	0	0	0
Total assets	(205,355)	13,681	17,007
Average funding sources	0	0	0
Information Services | Operating Segments
Segment Reporting Information [Line Items]
Fee income	120,234	106,678	97,640
Interest income	28,528	24,332	20,343
Interest expense	166	0	0
Intersegment income (expense)	(3,350)	(3,222)	(2,315)
Tax-equivalized pre-tax income	26,478	25,446	16,230
Goodwill	17,173	14,126	14,126
Other intangible assets, net	4,126	2,564	3,423
Total assets	1,595,939	1,450,594	1,188,745
Average funding sources	1,379,355	1,150,493	902,486
Banking Services | Operating Segments
Segment Reporting Information [Line Items]
Fee income	3,606	1,405	1,515
Interest income	40,913	24,732	29,494
Interest expense	4,143	1,171	2,362
Intersegment income (expense)	3,350	3,222	2,315
Tax-equivalized pre-tax income	21,566	11,004	14,973
Goodwill	136	136	136
Other intangible assets, net	0	0	0
Total assets	1,182,439	1,090,626	997,483
Average funding sources	$ 953,346	$ 876,018	$ 737,962