Acquisitions (Schedule Of Proforma Information) (Details) (USD $) In Thousands, except Per Share data	3 Months Ended	6 Months Ended
Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010
Net interest income	$ (62,319)	$ (55,154)	$ (123,686)	$ (110,271)
Other non-interest expense	(3,835)	(4,322)	(5,986)	(6,857)
Income tax expense	(5,927)	(1,734)	(10,445)	(3,433)
Monroe Bancorp [Member]
Net interest income	57,791	66,100	117,572	129,347
Other non-interest income	43,589	45,750	86,410	91,129
Total revenue	101,380	111,850	203,982	220,476
Provision expense	3,207	11,221	6,519	20,502
Other non-interest expense	77,545	84,863	153,894	169,857
Income before income taxes	20,628	15,766	43,569	30,117
Income tax expense	5,027	1,664	10,319	3,319
Net income	$ 15,601	$ 14,102	$ 33,250	$ 26,798
Diluted earnings per share	$ 0.16	$ 0.15	$ 0.35	$ 0.28

The pro forma diluted net income per share for a period as if the business combination or combinations had been completed at the beginning of a period

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 141R
-Paragraph 68
-Subparagraph r(2, 3)

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 141
-Paragraph 54

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 141
-Paragraph 55

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+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 08
-Paragraph h
-Article 4

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 109
-Paragraph 45
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