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Summary of Significant Accounting Policies (Tables)
12 Months Ended
Dec. 31, 2012
Organization, Consolidation and Presentation of Financial Statements [Abstract]  
Schedule of Estimated Useful Lives
Depreciation of premises and equipment is accumulated on a straight-line basis over the estimated useful lives, as follows:
Buildings and improvements
5-20 years
Leasehold improvements
5-20 years (or term of lease, if shorter)
Fixtures and equipment
3-5 years
Data processing and software
3 years
A summary of premises and equipment, net follows:
  
At December 31,
(In thousands)
2012
2011
Land
$
15,281

$
15,331

Buildings and improvements
95,775

98,906

Leasehold improvements
73,253

71,159

Fixtures and equipment
69,530

66,222

Data processing and software
162,833

153,282

Total premises and equipment
416,672

404,900

Less accumulated depreciation and amortization
(282,110
)
(257,521
)
Premises and equipment, net
$
134,562

$
147,379