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Note 8 - Commitments and Contingencies (Details Textual)	0 Months Ended
	Nov. 20, 2012
Loss Contingency, Claims Settled, Number	4

X

- Definition

Number of claims settled.

+ References

No definition available.

+ Details

Name:	us-gaap_LossContingencyClaimsSettledNumber
Namespace Prefix:	us-gaap_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration