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Summary of Significant Accounting Policies (Details) (USD $) In Thousands	Jun. 30, 2011	Dec. 31, 2010
Assets:
Available-for-Sale Securities	$ 284	$ 248
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Assets:
Available-for-Sale Securities	284	248
Significant Other Observable Inputs (Level 2) [Member]
Assets:
Available-for-Sale Securities	0	0
Unobservable Inputs (Level 3)[Member]
Assets:
Available-for-Sale Securities	$ 0	$ 0

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- Definition

This element represents a certain statement of financial position asset caption which represents a class of assets, or which may include an individual asset, measured at fair value on a recurring basis.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 157
-Paragraph 32
-Subparagraph a

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