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Amount of current borrowing capacity under the credit facility considering any current restrictions on the amount that could be borrowed (for example, borrowings may be limited by the amount of current assets), but without considering any amounts currently outstanding under the facility.

+ References

Reference 1: 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

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

+ Details

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Balance Type:	credit
Period Type:	instant

- Definition

Date the credit facility terminates, in CCYY-MM-DD format.

+ References

+ Details

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- Definition

Period remaining on line of credit facility before it terminates, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

+ Details

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- 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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- Details

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Long-Term Debt - 2012 Credit Facility - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended	0 Months Ended
	Dec. 31, 2014	Dec. 20, 2012	May 31, 2013
Debt Instrument [Line Items]
Senior Secured debt			$ 405.0
Maturity date of revolving credit facility	May 31, 2013
2012 Credit Facility
Debt Instrument [Line Items]
Senior Secured debt		50.0
Maturity date of revolving credit facility	Dec. 20, 2016
2012 Credit Facility, obligations		30
Period of revolving credit facility		4 years
Term loan facility
Debt Instrument [Line Items]
2012 Credit Facility, obligations		20
Period of revolving credit facility		4 years
Letter of credit
Debt Instrument [Line Items]
2012 Credit Facility, obligations		$ 3