Commitments and Contingencies (Tables)

3 Months Ended

Mar. 31, 2018

Commitments and Contingencies Disclosure [Abstract]

Summary of Financial Instruments Outstanding

At March 31, 2018 and December 31, 2017, respectively, the Company had the following financial instruments outstanding and related reserves, whose contract amounts represent credit risk:

(Dollars in thousands)	March 31, 2018		December 31, 2017
Commitments to grant loans	$	319,318	$	342,305
Unfunded commitments under lines of credit	6,340,135		6,060,034
Commercial and standby letters of credit	211,070		210,002
Reserve for unfunded lending commitments	13,432		13,208