Obligations under capital lease (Details Textuals) (USD $) In Millions, unless otherwise specified	9 Months Ended
Sep. 30, 2012
Inactive Easement [Member]
Other Liabilities [Line Items]
Other Liabilities, Noncurrent	$ 7.1
Discount On Long Term Liability	2.9
Right Of Way Option Life	10 years
Consulting Contract [Member]
Other Liabilities [Line Items]
Other Liabilities, Noncurrent	3.2
Consulting Agreement Payments	$ 0.08
Contract Expiration	Jul. 01, 2014
Service Contract Life	5 years

Aggregate carrying amount, as of the balance sheet date, of noncurrent obligations not separately disclosed in the balance sheet. Noncurrent liabilities are expected to be paid after one year (or the normal operating cycle, if longer).

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.24)

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 24

-Article 5

Name:	us-gaap_OtherLiabilitiesNoncurrent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant