Premises and Equipment (Tables)

12 Months Ended

Dec. 31, 2014

Property, Plant and Equipment [Abstract]

Summary of Premises and Equipment

			2014						2013
		Estimated			Accumulated		Net Book		Net Book
		Useful Lives		Cost	Depreciation		Value		Value
					($ in Thousands)
Land		—	$	52,790	$	-	$	52,790	$	50,668
Land improvements		3 – 15 years		10,903		4,295		6,608		6,490
Buildings		5 – 39 years		255,623		115,921		139,702		130,772
Computers		3 – 5 years		35,929		28,411		7,518		10,397
Furniture, fixtures and other equipment		3 – 15 years		161,008		105,261		55,747		58,259
Leasehold improvements		5 – 30 years		33,930		21,607		12,323		14,304
	Total premises and equipment		$	550,183	$	275,495	$	274,688	$	270,890

Minimum annual rentals and commitments under noncancelable operating leases

	($ in Thousands)
2015	$	10,477
2016		11,099
2017		9,962
2018		8,749
2019		8,390
Thereafter		25,668
Total	$	74,345