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Description of Business | 12 Months Ended
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Dec. 31, 2019
Disclosure Text Block [Abstract] |
Nature of Operations |
1. | DESCRIPTION OF BUSINESS
First US Bancshares, Inc. (“Bancshares”) and its wholly-owned subsidiary, First US Bank (the “Bank”), provide commercial banking services to customers through 20 banking offices located in Birmingham, Bucksville, Butler, Calera, Centreville, Columbiana, Gilbertown, Grove Hill, Harpersville, Jackson, Thomasville, Tuscaloosa and Woodstock, Alabama; Knoxville and Powell, Tennessee; and Rose Hill and Ewing, Virginia. In addition, the Bank operates loan production offices in Mobile, Alabama and the Chattanooga, Tennessee area. Both Bancshares and the Bank are headquartered in Birmingham, Alabama. The Bank owns all of the stock of Acceptance Loan Company, Inc., an Alabama corporation (“ALC”). ALC is a finance company headquartered in Mobile, Alabama that performs both indirect lending through third-party retailers and conventional consumer finance lending through a branch network. As of December 31, 2019, ALC conducted indirect lending in 11 states, including Alabama, Florida, Georgia, Kentucky, Mississippi, Missouri, North Carolina, South Carolina, Tennessee, Texas and Virginia, with loans underwritten centrally at ALC’s headquarters location. ALC’s branch network serves customers through 21 offices located in Alabama and southeast Mississippi. The Bank also owns all of the stock of FUSB Reinsurance, Inc. (“FUSB Reinsurance”), an Arizona corporation. FUSB Reinsurance is an insurance company that underwrites credit life and accidental death insurance related to consumer loans written by the Bank and ALC.

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- Definition The entire disclosure for the nature of an entity's business, major products or services, principal markets including location, and the relative importance of its operations in each business and the basis for the determination, including but not limited to, assets, revenues, or earnings. For an entity that has not commenced principal operations, disclosures about the risks and uncertainties related to the activities in which the entity is currently engaged and an understanding of what those activities are being directed toward. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 275 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=99393423&loc=d3e5967-108592 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 275 -URI http://asc.fasb.org/topic&trid=2134479 + Details
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