Employee Benefit Plans (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Components of net periodic benefit cost
Service cost, included in salaries and employee benefits	$ 415	$ 316	$ 801	$ 609
Other components of net periodic benefit cost:
Interest cost	140	151	275	304
Expected return on plan assets	(371)	(319)	(745)	(649)
Amortization of prior service credit	(17)	(17)	(34)	(34)
Recognized net actuarial losses	57	52	99	94
Other components of net periodic benefit cost, included in other noninterest income	(191)	(133)	(405)	(285)
Net periodic benefit cost	$ 224	$ 183	$ 396	$ 324