Commitments, Guarantees, and Contingent Liabilities (Tables)

12 Months Ended

Dec. 31, 2018

Commitments and Contingencies Disclosure [Abstract]

Commitments Disclosure

Contractual or Notional Amounts of Financial Instruments

(Dollar amounts in thousands)

	As of December 31,
	2018		2017
Commitments to extend credit:
Commercial, industrial, and agricultural	$	1,729,286	$	1,729,426
Commercial real estate	296,882		377,551
Home equity	570,553		514,973
Other commitments(1)	244,917		244,222
Total commitments to extend credit	$	2,841,638	$	2,866,172
Letters of credit	$	112,728	$	128,801

⁽¹⁾  Other commitments includes installment and overdraft protection program commitments.