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Off- Balance Sheet Activities (Tables)
 3 Months Ended
Mar. 31, 2020
Fair Value Disclosures [Abstract]  
Exposure to Off-balance Sheet Risk
A summary of the contractual amounts of the Company's exposure to off-balance sheet risk is as follows:
 
 
March 31, 2020
 
December 31, 2019
(Dollars in thousands)
 
Fixed
 
Variable
 
Fixed
 
Variable
Commitments to make loans
 
$
26,088

 
$
12,778

 
$
16,276

 
$
20,128

Unused lines of credit
 
37,051

 
348,460

 
28,723

 
288,086

Unused standby letters of credit and commercial letters of credit
 
4,327

 
2,028

 
4,895

 
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