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Non-agency Residential Mortgage-backed Securities, Number of Securities

+ References

No definition available.

+ Details

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- Definition

Number of non-agency residential mortgage-backed securities that have subprime or Alt-A components

+ References

No definition available.

+ Details

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- Definition

Non agency residential mortgage backed securities number of securities determined to be other than temporarily impaired.

+ References

No definition available.

+ Details

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- Definition

Non-agency Residential Mortgage Backed Securities, Number of Securities Rated Below Investment Grade

+ References

No definition available.

+ Details

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- Definition

Number Of Days Mortgage Is Past Due Related To Cumulative Default Rate

+ References

No definition available.

+ Details

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- Definition

The carrying value of securities pledged to secure public funds and for other purposes as required by law.

+ References

No definition available.

+ Details

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- Definition

Accumulated other comprehensive loss related to portion of other than temporary impairment (OTTI) due to factors other than credit losses on debt securities categorized as available-for-sale that an entity does not intend to sell and which it is not more likely than not that the entity will be required to sell before recovery of the amortized cost basis of the debt security. The amount represented by this item is net of tax, as applicable.

+ References

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

-Publisher FASB

-Name FASB Staff Position (FSP)

-Number FAS115-1/124-1

-Paragraph 16C

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 220

-SubTopic 10

-Section 45

-Paragraph 14A

-URI http://asc.fasb.org/extlink&oid=20435746&loc=SL7669686-108580

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name FASB Staff Position (FSP)

-Number FAS115-1/124-1

-Paragraph 7

-Footnote 2

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 115

-Paragraph 19

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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- Definition

This item represents the gross unrealized losses for securities, at a point in time, which are categorized neither as held-to-maturity nor trading securities.

+ References

No definition available.

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Investment Securities (Narrative) (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013 Securities	Dec. 31, 2012	Mar. 31, 2012
Investment [Line Items]
Amount of securities pledged to secure public funds and other purposes as required by law	$ 1,651,046	$ 1,775,345
Number of non-agency residential mortgage-backed securities that had unrealized losses	3
Number of non-agency residential mortgage-backed securities rated below investment grade	3
Number of non-agency residential mortgage-backed securities that have subprime or Alt-A components	0
Number of non-agency residential-mortgage backed securities with other-than-temporary impairment	1
Accumulated other comprehensive income (loss), other-than- temporarily impaired securities	745		4,144
Unrealized loss	17,971	19,010
Minimum [Member]
Investment [Line Items]
Number of days mortgage is past due related to cumulative default rate	60
Maximum [Member]
Investment [Line Items]
Number of days mortgage is past due related to cumulative default rate	90
Other Structured Financial Products [Member]
Investment [Line Items]
Unrealized loss	$ 15,072	$ 15,461	$ 16,859