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Repurchase Agreements and Other Borrowings Repurchase Agreements and Other Borrowings (Tables)
3 Months Ended
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