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Note 6 - Derivative Instruments (Detail) (ABL Credit Facility [Member], USD $) In Millions, unless otherwise specified	Jun. 30, 2012
ABL Credit Facility [Member]
Line of Credit Facility, Amount Outstanding	$ 53.2

X

- Definition

Amount borrowed under the credit facility as of the balance sheet date.

+ References

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 19, 22

-Article 5

+ Details

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