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Leases (Notes)
12 Months Ended
Dec. 31, 2017
Leases [Abstract]  
Leases
Leases

The Company has several noncancellable operating leases, primarily for property rental of banking buildings.  These leases are for terms from one year to fifteen years and generally contain renewal options for periods ranging from one year to five years.  Rental expense for these leases was $2,720,000, $2,620,000 and $1,749,000 for the years ended December 31, 2017, 2016 and 2015, respectively.  Future minimum lease payments under operating leases are (in thousands):
 
Operating Leases

2018
$
2,591

2019
2,099

2020
2,099

2021
1,792

2022
1,793

Thereafter
32,882

Total minimum lease payments
$
43,256