Contingencies and Commitments (Tables)

12 Months Ended

Dec. 31, 2017

Commitments and Contingencies Disclosure [Abstract]

Outstanding commitments

The Company had the following outstanding commitments:

(Dollars in thousands)	December 31, 2017		December 31, 2016
Unused lines of credit	$	1,565,112	1,325,236
Letters of credit	40,082		26,162
Total outstanding commitments	$	1,605,194	1,351,398