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Fair Value of Assets and Liabilities - Financial Assets Measured at Fair Value on Non-Recurring Basis (Details) - Nonrecurring $ in Thousands | Dec. 31, 2020 USD ($) | Dec. 31, 2019 USD ($)
--- | --- | ---
Fair value assets and liabilities - Nonrecurring Basis |  |
Total assets measured at fair value | $ 72 | $ 370
Impaired loans, net |  |
Fair value assets and liabilities - Nonrecurring Basis |  |
Total assets measured at fair value |  | 102
Other real estate owned, net |  |
Fair value assets and liabilities - Nonrecurring Basis |  |
Total assets measured at fair value | 72 | 268
Level 3 |  |
Fair value assets and liabilities - Nonrecurring Basis |  |
Total assets measured at fair value | 72 | 370
Level 3 | Impaired loans, net |  |
Fair value assets and liabilities - Nonrecurring Basis |  |
Total assets measured at fair value |  | $ 102
Impaired loans, input |  | 0.30
Impaired loans, net, valuation technique |  | cffi:ValuationTechniqueAppraisalsMember
Impaired loans, net, measurement input |  | us-gaap:MeasurementInputDiscountRateMember
Level 3 | Impaired loans, net | Weighted Average |  |
Fair value assets and liabilities - Nonrecurring Basis |  |
Impaired loans, input |  | 0.30
Level 3 | Other real estate owned, net |  |
Fair value assets and liabilities - Nonrecurring Basis |  |
Total assets measured at fair value | $ 72 | $ 268
Other real estate owned, net, valuation technique | cffi:ValuationTechniqueAppraisalsMember | cffi:ValuationTechniqueAppraisalsMember
Other real estate owned, net, measurement input | us-gaap:MeasurementInputDiscountRateMember | us-gaap:MeasurementInputDiscountRateMember
Level 3 | Other real estate owned, net | Minimum |  |
Fair value assets and liabilities - Nonrecurring Basis |  |
Other real estate owned, input | 0.75 | 0.33
Level 3 | Other real estate owned, net | Maximum |  |
Fair value assets and liabilities - Nonrecurring Basis |  |
Other real estate owned, input | 0.80 | 0.75
Level 3 | Other real estate owned, net | Weighted Average |  |
Fair value assets and liabilities - Nonrecurring Basis |  |
Other real estate owned, input | 0.79 | 0.37

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- Definition Fair value portion of probable future economic benefits obtained or controlled by an entity as a result of past transactions or events. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258 + Details
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- Definition Value of input used to measure loan, held for sale. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (bbb)(2) -URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258 + Details
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- Definition Value of input used to measure real estate owned by financial institution by financial institution which is not directly related to its business. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (bbb)(2) -URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258 + Details
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