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COMMITMENTS AND CONTINGENCIES (Tables)
3 Months Ended
Mar. 31, 2019
Commitments and Contingencies Disclosure [Abstract]  
Schedule of Guarantor Obligations
A summary of the Company’s commitments is as follows:     
(dollars in thousands)
March 31,
2019
 
December 31,
2018
Commitments to extend credit
$
1,818,407

 
$
1,671,419

Unused home equity lines of credit
105,780

 
112,310

Financial standby letters of credit
25,599

 
24,596

Mortgage interest rate lock commitments
158,141

 
81,833