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Commitments (Tables)
12 Months Ended
Dec. 31, 2016
Commitments and Contingencies Disclosure [Abstract]  
Schedule of Commitments
The contractual amounts of off-balance-sheet financial instruments as of December 31, 2016, and December 31, 2015, are as follows: 
(in thousands)
December 31, 2016
 
December 31, 2015
Commitments to extend credit
$
1,075,170

 
$
1,140,028

Letters of credit
78,954

 
54,648