Consolidated Statements of Income and Comprehensive Income (Parenthetical) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Income Statement [Abstract]
Reclassification adjustment for net realized (gains) losses included in income	$ (1,323)	$ 2,256	$ 1,750
Reclassification adjustment for employee benefit costs included in expense	(3,601)	(6,603)	(4,289)
Reclassifications for federal income tax expense (benefit)	$ (1,034)	$ (913)	$ (534)