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Repurchase Agreements and Other Borrowings Repurchase Agreements and Other Borrowings (Tables)
9 Months Ended
Sep. 30, 2018
Debt Disclosure [Abstract]  
Schedule of Securities Financing Transactions [Table Text Block]
Collateral pledged by class for repurchase agreements are as follows (in thousands):
 
September 30, 2018
December 31, 2017
US Treasury securities and obligations of U.S. government corporations & agencies
$
62,202

$
100,895

Mortgage-backed securities: GSE: residential
36,673

54,493

Total
$
98,875

$
155,388