Summary of Significant Accounting Policies -Impact of Adoption (Details) - USD ($) $ in Thousands	Sep. 30, 2023		Jun. 30, 2023	Jan. 01, 2023	Dec. 31, 2022		Sep. 30, 2022	Jun. 30, 2022	Dec. 31, 2021
ASSETS
Allowance for credit losses on loans	$ 22,462	[1]	$ 22,236		$ 15,588	[1]	$ 15,505	$ 15,353	$ 16,903
Deferred tax asset					3,267
Liabilities:
Liability for unfunded commitments					0
Shareholders' Equity
Retained earnings	$ 85,104			$ 5,600	91,789
Cumulative Effect, Period of Adoption, Adjustment
ASSETS
Allowance for credit losses on loans				5,793	5,793
Deferred tax asset				1,483
Liabilities:
Liability for unfunded commitments				1,272
Shareholders' Equity
Retained earnings				(5,581)
Cumulative Effect, Period of Adoption, Adjusted Balance
ASSETS
Allowance for credit losses on loans				21,381	$ 21,381
Deferred tax asset				4,750
Liabilities:
Liability for unfunded commitments				1,272
Shareholders' Equity
Retained earnings				$ 86,208

[1] amounts include the impacts of the January 1, 2023 adoption of ASU 2016-13. See Note 2 for details.See accompanying notes to the consolidated financial statements (unaudited)