Tax year being audited in the income tax examination, in CCYY format.

No definition available.

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:gYearItemType
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Period Type:	duration

- Details

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- Definition

The amount of the tax credit carryforward, before tax effects, available to reduce future taxable income under enacted tax laws.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 740

-SubTopic 10

-Section 50

-Paragraph 3

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32559-109319

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

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Carryforwards

-URI http://asc.fasb.org/extlink&oid=6506874

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
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- Definition

The total amount of unrecognized tax benefits that, if recognized, would affect the effective tax rate.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 740

-SubTopic 10

-Section 50

-Paragraph 15A

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=6907707&loc=SL6600010-109319

+ Details

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Balance Type:	credit
Period Type:	instant

- Details

Name:	us-gaap_IncomeTaxAuthorityAxis=us-gaap_StateAndLocalJurisdictionMember
Namespace Prefix:
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Period Type:

Income Taxes (Narrative) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended	12 Months Ended
	Dec. 31, 2009	Dec. 31, 2012	Dec. 31, 2013	Dec. 31, 2014
Operating Loss Carryforwards [Line Items]
Unrecognized tax benefits that would impact effective tax rate		$ 10.2	$ 0.4
Income Tax Examination, Year under Examination	2009	2012
State Jurisdiction \| Kansas
Operating Loss Carryforwards [Line Items]
Income tax credit				$ 9.7