Interest and fee income generated by commercial and consumer loans, made by foreign branches of the reporting entity, which may include loans to foreign governments, foreign banks and other financial institutions, commercial and industrial entities, and citizens of not domiciled in the same country as the reporting entity.

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Carrying amount as of the balance sheet date of interest earned but not received. Also called accrued interest or accrued interest receivable.

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The total amount of the contingent obligation under letters of credit outstanding as of the reporting date.

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Amount of allowance to cover probable credit losses on loans and leases. Includes carryover of or adjustments to the allowance for loan losses in connection with business combinations. Excludes allowance for loans and leases covered under loss sharing agreements.

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International Operations (Details) - USD ($)	12 Months Ended
International Operations (Details) - USD ($)	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Loans:
Loans	$ 6,561,289,000	$ 6,348,172,000
Less allowance for probable loan losses	(61,384,000)	(67,687,000)	$ (64,661,000)	$ (66,988,000)
Net loans	6,499,905,000	6,280,485,000
Accrued interest receivable	36,803,000	34,456,000
International Banking Services
Loans:
Accrued interest receivable	811,000	671,000
Outstanding standby and commercial letters of credit	119,302,000
Revenues	5,412,000	5,248,000	$ 5,495,000
International Banking Services \| Foreign
Loans:
Loans	150,517,000	158,886,000
Less allowance for probable loan losses	(871,000)	(842,000)
Net loans	149,646,000	158,044,000
International Banking Services \| Foreign \| Commercial
Loans:
Loans	101,955,000	113,019,000
International Banking Services \| Foreign \| Others
Loans:
Loans	$ 48,562,000	$ 45,867,000