Loans and Allowance for Credit Losses - Performing Loans Classified as Troubled Debt Restructuring Loans (Details) $ in Thousands	6 Months Ended		12 Months Ended
	Dec. 31, 2021 USD ($) loan	Dec. 31, 2020 USD ($) loan	Jun. 30, 2021 USD ($) loan
Number of modifications | loan	1	4
Recorded Investment | $	$ 151	$ 1,927
Performing Loans
Number of modifications | loan	23		12
Recorded Investment | $	$ 6,387		$ 3,241
Residential Real Estate
Number of modifications | loan	1	1
Recorded Investment | $	$ 151	$ 96
Residential Real Estate | Performing Loans
Number of modifications | loan	11		1
Recorded Investment | $	$ 3,696		$ 895
Commercial Real Estate
Number of modifications | loan		2
Recorded Investment | $		$ 1,798
Commercial Real Estate | Performing Loans
Number of modifications | loan	5		4
Recorded Investment | $	$ 984		$ 949
Commercial loans
Number of modifications | loan		1
Recorded Investment | $		$ 33
Commercial loans | Performing Loans
Number of modifications | loan	7		7
Recorded Investment | $	$ 1,707		$ 1,397