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Commitments and Contingencies Disclosure (Tables)
 12 Months Ended
Dec. 31, 2017
Commitments and Contingencies Disclosure [Abstract]  
Commitments Disclosure
The following table presents a summary of the financial instruments described above as of the dates indicated:
 
December 31,
 
2017
 
2016
 
(In thousands)
Loan commitments to extend credit
$
6,234,061

 
$
4,166,703

Standby letters of credit
320,063

 
211,398

Total
$
6,554,124

 
$
4,378,101