Employee Benefits (Narrative) (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2021 USD ($) employee	Dec. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)	Jan. 31, 2021 employee	Mar. 31, 2019 employee	Mar. 20, 2019 employee	Dec. 31, 2017 employee	Mar. 29, 2017 employee
Defined Benefit Plan Disclosure [Line Items]
BOLI added	$ 7,200
Cash surrender value of bank owned life insurance	52,745	$ 44,285
Earnings on bank-owned life insurance	1,227	794	$ 647
Number of officers with split dollar life insurance arrangement | employee				15	1		11
Split dollar life insurance arrangement, death benefit	49,700
Split dollar life insurance arrangement, death benefit to be paid to insured's beneficiary	8,400
Split dollar life insurance arrangement, death benefit to be paid to Company	$ 41,300
Number of officers with opportunity to retain benefit equal to two times highest base salary after separation | employee	4
Split dollar life insurance arrangement, accrued expense	$ 200	154
Number of officers who entered into supplemental executive retirement agreement | employee						1		5
Defined contribution plan, accrued expense	3,600	$ 2,000
Landmark Bancorp, Inc. [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined contribution plan, accrued expense	$ 1,000