Comprehensive Income - Reclassifications (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Comprehensive Income
Gain on sale of available-for-sale securities	$ 650	$ 1,143
Income tax expense	(905)	(2,169)
Net income before noncontrolling interest	2,864	8,085
Salaries and employee benefits	(17,961)	(11,911)
Interest on investment securities	648	631
Amount reclassified from AOCI
Comprehensive Income
Net income before noncontrolling interest	424	576
Available-for-sale securities | Amount reclassified from AOCI
Comprehensive Income
Gain on sale of available-for-sale securities	650	1,143
Income tax expense	(152)	(268)
Net income before noncontrolling interest	498	875
Defined benefit pension plan items | Amount reclassified from AOCI
Comprehensive Income
Income tax expense	25	30
Net income before noncontrolling interest	(82)	(97)
Salaries and employee benefits	(107)	(127)
Investment hedge | Amount reclassified from AOCI
Comprehensive Income
Income tax expense	(2)	62
Net income before noncontrolling interest	8	(202)
Interest on investment securities	$ 10	$ (264)