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Fair Values of Assets and Liabilities - Schedule of Assets Measured on Nonrecurring Basis (Detail) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2020 | Dec. 31, 2019
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Total Assets | $ 938,309 | $ 962,731
Fair Value, Nonrecurring [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Impaired loans | 49,147 | 29,785
Fair Value Measurement Of Assets On Nonrecurring Basis Net Losses On Impaired Loans | (7,905) | (2,667)
Other Real Estate Owned Assets Fair Value | 1,319 | 2,608
Fair Value Measurement Of Assets On Nonrecurring Basis Net Losses On Other Real Estate Owned | (30) | (196)
Total Assets | 50,466 | 32,393
Fair Value Measurement Of Assets On Nonrecurring Basis Net Loss | (7,935) | (2,863)
Level 1 [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Total Assets | 0 | 0
Level 1 [Member] | Fair Value, Nonrecurring [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Impaired loans | 0 | 0
Other Real Estate Owned Assets Fair Value | 0 | 0
Total Assets | 0 | 0
Fair Value, Inputs, Level 2 [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Total Assets | 930,020 | 955,266
Fair Value, Inputs, Level 2 [Member] | Fair Value, Nonrecurring [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Impaired loans | 35,543 | 12,267
Other Real Estate Owned Assets Fair Value | 1,319 | 2,608
Total Assets | 36,862 | 14,875
Level 3 [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Total Assets | 8,289 | 7,465
Level 3 [Member] | Fair Value, Nonrecurring [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Impaired loans | 13,604 | 17,518
Other Real Estate Owned Assets Fair Value | 0 | 0
Total Assets | $ 13,604 | $ 17,518

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- Definition Net losses on impaired loans still held at the end of the period. + References No definition available. + Details
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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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