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Deposits - Additional Information (Detail) - USD ($) $ in Thousands | Dec. 31, 2018 | Dec. 31, 2017
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Banking and Thrift [Abstract] |  |
Accrued interest payable | $ 430 | $ 22
Time deposits, $100,000 and over | $ 124,300 | $ 84,900

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- Definition Amount of accrued but unpaid interest on deposit liabilities. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.15(5)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 + Details
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- Definition Amount of time deposit liabilities, including certificates of deposit, in denominations of $100,000 or more. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher SEC -Name Industry Guide -Number 3 -Section V -Paragraph D-E + Details
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