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Borrowings | 12 Months Ended
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Dec. 31, 2018
Advances from Federal Home Loan Banks [Abstract] |
Borrowings | Borrowings The Company, through its subsidiary bank, borrows funds in the form of federal funds purchased and Federal Home Loan Bank advances. Federal fund lines of credit are extended to the Bank by nonaffiliated banks with which a correspondent banking relationship exists. The line of credit amount is determined by the creditworthiness of the Bank and, in particular, its regulatory capital ratios, which are discussed in Note 15. Federal funds purchased generally mature each business day. The following table summarizes information related to federal funds purchased for the years ended December 31, 2018 and 2017:
|  | December 31,
|  | 2018 |  | 2017
|  | (dollars in thousands)
Balance at year-end |  | $ | 1,871 |  |  | $ | — |
Average balance during the year |  | $ | 964 |  |  | $ | 823 |
Average interest rate during the year |  | 2.63 | % |  | 1.64 | %
Maximum month-end balance during the year |  | $ | 7,820 |  |  | $ | 3,413 |
Gross lines of credit at year-end |  | $ | 28,000 |  |  | $ | 28,000 |
Unused lines of credit at year-end |  | $ | 26,129 |  |  | $ | 28,000 |
As of December 31, 2018, the Company also had a $5.0 million unused line of credit, in addition to the $28.0 million in federal funds lines of credit listed in the table above. As of December 31, 2018, Company had remaining credit availability in the amount of $169.6 million with the Federal Home Loan Bank of Atlanta. This line may be utilized for short and/or long-term borrowing. Advances on the line are secured by all of the Company’s eligible first lien residential real estate loans on one-to-four-unit, single-family dwellings; multi-family dwellings; home equity lines of credit; and commercial real estate loans. The amount of the available credit is limited to a percentage of the estimated market value of the loans as determined periodically by the FHLB of Atlanta. The amount of the available credit is also limited to 20% of total Bank assets. The Company had no borrowings with the FHLB at December 31, 2018 or December 31, 2017. The Company had a $25.0 million irrevocable letter of credit at December 31, 2018 with the FHLB to secure public deposits.

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- Definition The entire disclosure for information about short-term and long-term debt arrangements, which includes amounts of borrowings under each line of credit, note payable, commercial paper issue, bonds indenture, debenture issue, own-share lending arrangements and any other contractual agreement to repay funds, and about the underlying arrangements, rationale for a classification as long-term, including repayment terms, interest rates, collateral provided, restrictions on use of assets and activities, whether or not in compliance with debt covenants, and other matters important to users of the financial statements, such as the effects of refinancing and noncompliance with debt covenants. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -URI http://asc.fasb.org/topic&trid=2208564 + Details
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