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Related Party Transactions (Tables)
12 Months Ended
Dec. 31, 2018
Related Party Transaction [Line Items]  
Schedule of Related Party Transactions [Table Text Block]
 
 
Principal
Principal
 
 
December 31, 2017
Additions
Reductions
December 31, 2018
Related Party Loans
$
12,405

$
11,850

$
(2,223
)
$
22,032

Unfunded commitments
$
17,757

 
 
$
16,109