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Short-Term Borrowings | 12 Months Ended
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Dec. 31, 2023
Short-Term Borrowings |
Short-Term Borrowings | NOTE 13 Short-Term Borrowings Short-term borrowings at December 31, 2023, 2022, and 2021 consisted of the following: ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Year ended | ​
​ | ​ | December 31, | ​
(dollars in thousands) |  | 2023 |  | 2022 |  | 2021 | ​
Fed funds purchased |  | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Balance as of end of period | ​ | $ | 114,170 | ​ | $ | 153,080 | ​ | $ | — | ​
Average daily balance | ​ | ​ | 287,768 | ​ | ​ | 63,296 | ​ | ​ | 3 | ​
Maximum month-end balance | ​ | ​ | 492,060 | ​ | ​ | 251,880 | ​ | ​ | — | ​
Weighted-average rate | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
During period | ​ | ​ | 5.31 | % | ​ | 2.46 | % | ​ | — | %
End of period | ​ | ​ | 5.51 | % | ​ | 4.26 | % | ​ | — | %
FHLB short-term advances | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Balance as of end of period | ​ | $ | 200,000 | ​ | $ | 225,000 | ​ | $ | — | ​
Average daily balance | ​ | ​ | 113,973 | ​ | ​ | 89,932 | ​ | ​ | — | ​
Maximum month-end balance | ​ | ​ | 200,000 | ​ | ​ | 225,000 | ​ | ​ | — | ​
Weighted-average rate | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
During period | ​ | ​ | 5.39 | % | ​ | 3.10 | % | ​ | — | %
End of period | ​ | ​ | 5.50 | % | ​ | 4.31 | % | ​ | — | %
​ The Company had outstanding credit capacity with the FHLB of $706.6 million and $531.6 million at December 31, 2023 and 2022, respectively, secured by pledged loans and investment securities. The Company also had $87.0 million of unsecured federal funds agreements with correspondent banks with no outstanding balances at December 31, 2023 and 2022. The Company has an unused $20.0 million unsecured line of credit with Bank of North Dakota.

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- Definition The entire disclosure for short-term debt. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 470 -Name Accounting Standards Codification -Publisher FASB -URI https://asc.fasb.org//470/tableOfContent + Details
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