Business Combinations (Merger Related Expense) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
Mar. 31, 2015	Mar. 31, 2014
Business Acquisition [Line Items]
Total Merger related expense	$ 14,082	$ 5,983
Sterling Financial Corporation [Member]
Business Acquisition [Line Items]
Personnel	4,367
Legal and professional	3,913
Premises and Equipment	3,017
Communication	434
Other	2,351
Total Merger related expense	$ 14,082

Business Combination, Acquisition Related Costs, Communication

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- Definition

Business Combination, Acquisition Related Costs, Other

+ References

No definition available.

+ Details

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- Definition

Merger Related Expenses, Personnel

+ References

No definition available.

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- Definition

Business Combination, Acquisition Related Costs, Premises and Equipment

+ References

No definition available.

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- Definition

Business Combination, Acquisition Related Costs, Professional Fees

+ References

No definition available.

+ Details

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- Definition

This element represents acquisition-related costs incurred to effect a business combination which costs have been expensed during the period. Such costs include finder's fees; advisory, legal, accounting, valuation, and other professional or consulting fees; general administrative costs, including the costs of maintaining an internal acquisitions department; and may include costs of registering and issuing debt and equity securities.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 805

-SubTopic 10

-Section 25

-Paragraph 23

-URI http://asc.fasb.org/extlink&oid=34752592&loc=d3e1043-128460

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