Consolidated Statements of Stockholders' Equity - USD ($) $ in Thousands	Total	Cumulative Impact of ASU 2016-13 Adoption (CECL)	Common Stock	Retained Earnings	Retained Earnings Cumulative Impact of ASU 2016-13 Adoption (CECL)	AOCI Attributable to Parent	Treasury Stock
Balance at Dec. 31, 2019	$ 299,309		$ 186,345	$ 108,851		$ 9,826	$ (5,713)
Net income	41,876			41,876
Other comprehensive income (loss)	12,206					12,206
Stock based compensation expense	1,443		1,443
Vesting of Long Term Incentive Plan	161		(1,579)				1,740
Share forfeitures for taxes	(560)						(560)
Share issuance as part of a business combination	22,554		22,554
Dividends paid	(12,654)			(12,654)
Treasury share purchases	(14,238)						(14,238)
Balance at Dec. 31, 2020	350,097		208,763	138,073		22,032	(18,771)
Net income	51,844			51,844
Other comprehensive income (loss)	(12,737)					(12,737)
Restricted share issuance	0		(412)				412
Restricted share forfeitures	0		52				(52)
Stock based compensation expense	1,193		1,193
Vesting of Long Term Incentive Plan	0		(2,136)				2,136
Share forfeitures for taxes	(443)						(443)
Share issuance as part of a business combination	98,921		98,921
Retirement of Cortland shares owned by Farmers	(258)		(258)
Dividends paid	(14,085)			(14,085)
Treasury share purchases	(164)						(164)
Balance at Dec. 31, 2021	472,432	$ (1,936)	306,123	173,896	$ (1,936)	9,295	(16,882)
Net income	60,597			60,597
Other comprehensive income (loss)	(219,785)					(219,785)
Restricted share issuance	0		(1,816)				1,816
Restricted share forfeitures	0		42				(42)
Stock based compensation expense	1,817		1,817
Vesting of Long Term Incentive Plan	(457)		(826)				369
Share forfeitures for taxes	(191)						(191)
Dividends paid	(22,118)			(22,118)
Balance at Dec. 31, 2022	$ 292,295		$ 305,340	$ 212,375		$ (210,490)	$ (14,930)