Acquisitions (Details 1) (John D. Oil and Gas Marketing [Member], USD $)	3 Months Ended	6 Months Ended
Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
John D. Oil and Gas Marketing [Member]
Financial information of the Company for acquisition
Revenues	$ 21,637,716	$ 14,925,223	$ 67,964,712	$ 49,634,501
Net income (loss)	$ (223,130)	$ (634,169)	$ 4,871,798	$ 2,957,062
Basic and diluted earnings (loss) per share	$ (0.26)	$ (0.78)	$ 0.58	$ 0.36

Business acquisition pro forma earnings per share basic and diluted.

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- Definition

The pro forma net Income or Loss for the period as if the business combination or combinations had been completed at the beginning of a period.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 805

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (h)(2)-(3)

-URI http://asc.fasb.org/extlink&oid=25497992&loc=d3e1392-128463

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- Definition

The pro forma revenue for a period as if the business combination or combinations had been completed at the beginning of the period.

+ References

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