Commitments and Contingencies (Tables)

12 Months Ended

Dec. 31, 2017

Commitments and Contingencies Disclosure [Abstract]

Summary of Financial Instruments Outstanding

At December 31, 2017 and 2016, respectively, the Company had the following financial instruments outstanding and related reserves, whose contract amounts represent credit risk:

(Dollars in thousands)	December 31, 2017		December 31, 2016
Commitments to grant loans	$	342,305	$	355,558
Unfunded commitments under lines of credit	6,060,034		4,899,930
Commercial and standby letters of credit	210,002		163,560
Reserve for unfunded lending commitments	13,208		11,241