Loans and Credit Quality - Analysis Of Loan Transactions (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Loans and Leases Receivable, Related Parties [Roll Forward]
Balance, beginning of the year	$ 309	$ 0	$ 0
Loans made	0	309	0
Repayments	92	0	0
Balance, end of year	$ 217	$ 309	$ 0