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LOAN COMMITMENTS AND OTHER RELATED ACTIVITIES (Tables)
 12 Months Ended
Dec. 31, 2017
Commitments and Contingencies Disclosure [Abstract]  
Contractual Amount of Financial Instruments with Off-Balance-Sheet Risk
The contractual amount of financial instruments with off-balance sheet risk was as follows for the dates indicated:
 
 
December 31,
 
 
2017
 
2016
($ in thousands)
 
Fixed Rate
 
Variable Rate
 
Fixed Rate
 
Variable Rate
Commitments to extend credit (1)
 
$
1,851

 
$
335,654

 
$
74,777

 
$
201,321

Unused lines of credit
 
19,085

 
1,309,170

 
27,151

 
888,236

Letters of credit
 
1,050

 
12,976

 
1,784

 
8,655


(1)
Includes $0 and $65.1 million, respectively, of commitments to extend credit related to discontinued operations at December 31, 2017 and 2016.