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Repurchase Agreements and Other Borrowings Repurchase Agreements and Other Borrowings (Tables) | 3 Months Ended
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Mar. 31, 2019
Debt Disclosure [Abstract] |
Schedule of Securities Financing Transactions [Table Text Block] | Collateral pledged by class for repurchase agreements are as follows (in thousands):
| March 31, 2019 | December 31, 2018
US Treasury securities and obligations of U.S. government corporations & agencies | $ | 121,926 |  | $ | 130,893 |
Mortgage-backed securities: GSE: residential | 35,834 |  | 61,437 |
Total | $ | 157,760 |  | $ | 192,330 |

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