Company paid per share price.

No definition available.

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Period Type:	duration

- Definition

Net increase or decrease in the carrying amount of the debt instrument for the period.

+ References

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Article 4

-Section 08

-Paragraph f

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 235

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.4-08.(f))

-URI http://asc.fasb.org/extlink&oid=6881521&loc=d3e23780-122690

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- Definition

The fee, expressed as a percentage of the line of credit facility, for the line of credit facility regardless of whether the facility has been used.

+ References

No definition available.

+ Details

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- Definition

Reflects when the credit facility terminates, which may be presented in a variety of ways (year, month and year, day, month and year, quarter).

+ References

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 129

-Paragraph 2, 4

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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 SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 19, 22

-Article 5

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.19(b),22(b))

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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- Definition

Increase for additional borrowings on the credit facility during the period.

+ References

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Reflects when the credit facility first became available, which may be presented in a variety of ways (year, month and year, day, month and year, quarter).

+ References

+ Details

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Balance Type:	na
Period Type:	duration

- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The amount of cash paid during the reporting period for charges associated with the mergers.

+ References

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 95

-Paragraph 28

-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 230

-SubTopic 10

-Section 45

-Paragraph 25

-Subparagraph (g)

-URI http://asc.fasb.org/extlink&oid=6943989&loc=d3e3536-108585

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Balance Type:	credit
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- Details

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Subsequent Events (Details) (USD $) In Millions, except Per Share data, unless otherwise specified	0 Months Ended	3 Months Ended								3 Months Ended
	Feb. 22, 2012	Jan. 31, 2012	Jan. 31, 2012 Maximum [Member]	Jan. 31, 2012 Minimum [Member]	Apr. 30, 2012 $350 Million Senior Unresolved Revolving Credit [Member]	Jan. 31, 2012 $350 Million Senior Unresolved Revolving Credit [Member]	Oct. 31, 2011 $350 Million Senior Unresolved Revolving Credit [Member]	Feb. 17, 2012 $350 Million Senior Unresolved Revolving Credit [Member]	Oct. 14, 2011 $350 Million Senior Unresolved Revolving Credit [Member]	Apr. 30, 2012 $150 Million Senior Unsecured Term Loan [Member]	Feb. 17, 2012 $150 Million Senior Unsecured Term Loan [Member]
Subsequent Event [Line Items]
Senior unsecured revolving credit facility entered date		February 17, 2012					October 14, 2011
Senior unsecured revolving credit facility maximum borrowing capacity								$ 350.0	$ 350.0		$ 150.0
Senior unsecured revolving credit facility termination date		October 14, 2016				October 14, 2016
Senior unsecured revolving credit facility additional borrowings		150.0
Commitment fee percentage			0.30%	0.15%
Drawn down amount of revolving credit facility					100					150
Company paid per share price	$ 7.35
Total merger consideration, net of cash	$ 523.1