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Note 14 - Deferred Compensation Plans (Details Textual) | 12 Months Ended
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Dec. 31, 2021 USD ($) | Dec. 31, 2020 USD ($) | Dec. 31, 2019 USD ($)
Officer [Member] |  |  |
Deferred Compensation Liability, Current and Noncurrent, Total | $ 177,000 | $ 219,000 |
Deferred Compensation Arrangement with Individual, Compensation Expense | 10,000 | 12,000 | $ 15,000
Director [Member] |  |  |
Deferred Compensation Arrangement with Individual, Maximum Contractual Term (Year) |  |  | 15 years
Deferred Compensation Liability, Current and Noncurrent, Total | 136,000 | 142,000 |
Deferred Compensation Arrangement with Individual, Compensation Expense | $ 16,000 | $ 17,000 | $ 17,000
Peoples Bancorp, Inc [Member] |  |  |
Number of Key Employees | 3 |  |
Deferred Compensation Arrangement with Individual, Maximum Contractual Term (Year) | 10 years |  |

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- Definition Represents the number of key employees for whom the Bank will provide income following their retirement. + References No definition available. + Details
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- Definition The compensation expense recognized during the period pertaining to the deferred compensation arrangement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5047-113901 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 710 -SubTopic 10 -Section 30 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6409875&loc=d3e20015-108363 + Details
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- Definition Maximum term of the deferred compensation arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 710 -SubTopic 10 -Section 55 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=6409961&loc=d3e20487-108367 + Details
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- Definition Aggregate carrying value as of the balance sheet date of the liabilities for all deferred compensation arrangements. Represents currently earned compensation under compensation arrangements that is not actually paid until a later date. + References No definition available. + Details
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