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Off-balance sheet financial instruments (Tables)
12 Months Ended
Dec. 31, 2017
Off-balance sheet financial instruments.  
Summary of contractual amounts of off-balance sheet commitments

 

 

 

 

 

 

 

 

December 31

    

2017

    

2016

 

Commitments to extend credit

 

$

324,984

 

$

235,878

 

Unused portions of lines of credit

 

 

56,244

 

 

57,784

 

Standby letters of credit

 

 

23,387

 

 

31,051

 

 

 

$

404,615

 

$

324,713