Premises and Equipment (Tables)

12 Months Ended

Dec. 31, 2017

Property, Plant and Equipment [Abstract]

Summary of Premises and Equipment

Following is a summary of premises and equipment:

December 31	2017			2016
(in thousands)
Land	$	67,424		$	45,640
Premises	239,807			186,784
Equipment	212,587			174,325
	519,818			406,749
Accumulated depreciation	(183,278		)	(162,793		)
Total premises and equipment, net	$	336,540		$	243,956

Depreciation Expense for Premises and Equipment

Depreciation expense for premises and equipment is presented in the following table:

December 31	2017		2016		2015
(in thousands)
Depreciation expense for premises and equipment	$	34,322	$	23,355	$	20,009

Schedule of Rent Expense

Rental expense is presented in the following table:

December 31	2017		2016		2015
(in thousands)
Rental expense	$	29,148	$	21,015	$	16,193

Summary of Future Minimum Lease Payments

Following is a summary of future minimum lease payments for years following December 31, 2017:

(in thousands)
2018	$	26,949
2019	22,995
2020	18,587
2021	15,358
2022	11,855
Later years	49,342
Total minimum rental commitment under leases	$	145,086