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Financial Instruments (Details Textual) (USD $)	3 Months Ended
	Mar. 31, 2012
Financial Instruments (Textual) [Abstract]
Net proceeds from derivative instruments	$ 659,000

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- Definition

The cash inflow provided by derivative instruments during the period, which are classified as financing activities, excluding those designated as hedging instruments.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 23

-URI http://asc.fasb.org/extlink&oid=6943989&loc=d3e3505-108585

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