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Commitments, Contingencies and Concentrations of Credit Risk (Tables)
12 Months Ended
Dec. 31, 2019
Commitments and Contingencies Disclosure [Abstract]  
Supply Commitment [Table Text Block]

The following table provides a summary of financial instruments with off-balance sheet risk at December 31, 2019 and 2018:

2019

2018

(dollars in thousands)

Commitments under commercial loans and lines of credit

$

564,444

$

425,189

Home equity and other revolving lines of credit

47,278

39,965

Outstanding commercial mortgage loan commitments

392,225

355,914

Standby letters of credit

32,155

36,141

Overdraft protection lines

 

752

 

836

Total

$

1,036,854

$

858,045