PROPERTY PLANT AND EQUIPMENT (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Property Plant And Equipment [Line Items]
Buildings and Improvements	$ 139,533	$ 142,872
Leasehold Improvements	60,605	61,089
Furniture and equipment	165,386	162,954
Property, Plant and Equipment, Gross	365,524	366,915
Accumulated Depreciation	(248,335)	(238,734)
Subtotal	117,189	128,181
Land	25,279	26,932
Projects in progress	8,360	5,903
Premises and equipment, net	150,828	161,016
Depreciation and amortization expense	17,600	21,100	$ 21,000
Other Assets Held For Sale	$ 1,221	$ 0	$ 0
Maximum [Member] | FurnitureAndFixturesMember
Property Plant And Equipment [Line Items]
Property, Plant and Equipment, Useful Life	10 years
Maximum [Member] | BuildingImprovementsMember
Property Plant And Equipment [Line Items]
Property, Plant and Equipment, Useful Life	35 years
Maximum [Member] | LeaseholdImprovementsMember
Property Plant And Equipment [Line Items]
Property, Plant and Equipment, Useful Life	10 years
Minimum [Member] | FurnitureAndFixturesMember
Property Plant And Equipment [Line Items]
Property, Plant and Equipment, Useful Life	2 years
Minimum [Member] | BuildingImprovementsMember
Property Plant And Equipment [Line Items]
Property, Plant and Equipment, Useful Life	10 years
Minimum [Member] | LeaseholdImprovementsMember
Property Plant And Equipment [Line Items]
Property, Plant and Equipment, Useful Life	1 year