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Other Borrowings and Notes Payable (Tables) | 12 Months Ended
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Dec. 31, 2020
Debt Instrument [Line Items] |
Schedule of Long-term Debt Instruments [Table Text Block] | Term Loan In February 2019, the Company entered into a five year, $40.0 million unsecured term loan agreement (the “Term Loan”) with another bank with the proceeds primarily used to fund the company’s cash portion of the acquisition of Trinity. The interest rate is the one-month LIBOR plus 125 basis points. A summary of the Term Loan is as follows:
| December 31, |  |
($ in thousands) | 2020 |  | 2019 |  |
Term Loan | $ | 30,000 |  |  | $ | 34,286 |  |  |
Average balance during the year | 32,123 |  |  | 30,810 |  |  |
Maximum balance outstanding at any month-end | 34,286 |  |  | 40,000 |  |  |
Weighted average interest rate during the year | 1.96 | % |  | 3.55 | % |  |
Average interest rate at December 31 | 1.44 | % |  | 3.00 | % |  |
Schedule of Line of Credit Facilities [Table Text Block] | Revolving Credit Line In February 2016, the Company entered into a senior unsecured revolving credit agreement (the “Revolving Agreement”) with another bank. The Revolving Agreement has a one-year term, maturing on February 22, 2021. It is in process of renewal and allows for borrowings up to $25 million. The interest rate is the one-month LIBOR plus 125 basis points. The proceeds can be used for general corporate purposes. The Revolving Agreement is subject to ongoing compliance with a number of customary affirmative and negative covenants as well as specified financial covenants. A summary of the amounts drawn on the Revolving Agreement is as follows:
|  |  | December 31,
($ in thousands) |  |  | 2019
Outstanding balance |  |  | $ | — |
Average balance during the year |  |  | 323 |
Maximum balance outstanding at any month-end |  |  | 2,000 |
Weighted average interest rate during the year |  |  | 4.61 | %
Average interest rate at December 31 |  |  | — |
Other Borrowings |
Debt Instrument [Line Items] |
Summary of Other Borrowings | A summary of securities sold under agreements to repurchase is as follows:
| December 31,
($ in thousands) | 2020 |  | 2019
Securities sold under agreement to repurchase | $ | 271,081 |  |  | $ | 230,886 |
Average balance during the year | 206,338 |  |  | 169,179 |
Maximum balance outstanding at any month-end | 271,081 |  |  | 230,886 |
Average interest rate during the year | 0.23 | % |  | 0.69 | %
Average interest rate at December 31 | 0.07 | % |  | 0.91 | %

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