Cash and equivalents whose use in whole or in part is restricted for the long-term, generally by contractual agreements or regulatory requirements.

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 1

-Article 5

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.1)

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

Name:	us-gaap_RestrictedCashAndCashEquivalentsNoncurrent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

Description Of Business And Significant Accounting Policies (Narrative) (Details) (USD $)	9 Months Ended
	Sep. 30, 2014 mi	Dec. 31, 2013	Aug. 16, 2013	Sep. 30, 2014 Certificates of Deposit [Member]	Dec. 31, 2012 Collateralized Bond [Member]
Description Of Business And Significant Accounting Policies [Line Items]
Length of pipeline, miles	65
Restricted cash	$ 386,000	$ 507,000		$ 120,500	$ 386,000
Unevaluated properties	751,000	736,000
Current cost discount	10.00%
Agreement to sell the Company's Swan Creek and Pipeline assets			$ 1,500,000