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Background, Principal Activities and Basis of Presentation (Details Textual) (USD $) In Thousands, unless otherwise specified	1 Months Ended
	May 31, 2012
Adjustments to Additional Paid in Capital, Other	$ 153

X

- Definition

Represents increases or decreases in additional paid in capital not separately disclosed.

+ References

No definition available.

+ Details

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