Premises, Equipment And Leases (Tables)

12 Months Ended

Dec. 31, 2016

Property Plant And Equipment [Abstract]

Summary of Premises And Equipment

Premises and equipment on December 31 are summarized below:
(Dollars in thousands)			2016		2015
Land		$	63,463	$	67,442
Buildings			342,027		343,797
Leasehold improvements			26,956		31,270
Furniture, fixtures, and equipment			180,435		194,072
	Premises and equipment, at cost		612,881		636,581
Less accumulated depreciation and amortization			323,496		360,962
Premises and equipment, net		$	289,385	$	275,619

Minimum Future Lease Payments For Noncancelable Operating Leases On Premises And Equipment

Minimum future lease payments for noncancelable operating leases, primarily on premises, on December 31, 2016 are shown below. Aggregate minimum income under sublease agreements for these periods is not material.
(Dollars in thousands)
2017	$	18,847
2018		16,681
2019		14,175
2020		12,668
2021		11,290
2022 and after		42,742
Total minimum lease payments	$	116,403

Payments required under capital leases are not material.

Rent Expense Incurred Under All Operating Lease Obligations

Rent expense incurred under all operating lease obligations for the years ended December 31 is as follows:
(Dollars in thousands)		2016		2015		2014
Rent expense, gross	$	20,812	$	18,166	$	20,123
Sublease income		(477)		(5)		(213)
Rent expense, net	$	20,335	$	18,161	$	19,910