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Earnings per Share - Components (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Basic earnings per share:
Net income available to shareholders	$ 6,609	$ 5,839
Average shares outstanding (in shares)	6,604,493	6,617,368
Basic earnings per share (in dollars per share)	$ 1.00	$ 0.88
Diluted earnings per share:
Net income available to shareholders	$ 6,609	$ 5,839
Average shares outstanding (in shares)	6,604,493	6,617,368
Diluted earnings per share (in dollars per share)	$ 1.00	$ 0.88

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The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period.

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-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=124432515&loc=d3e3550-109257

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 260
-SubTopic 10
-Section 45
-Paragraph 10
-URI http://asc.fasb.org/extlink&oid=125511455&loc=d3e1448-109256

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