XML 13 R25.htm IDEA: XBRL DOCUMENT v2.4.0.8
Description Of Business And Significant Accounting Policies (Narrative) (Details) (USD $)
3 Months Ended
Mar. 31, 2014
mi
Dec. 31, 2013
Aug. 16, 2013
Mar. 31, 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 $ 507,000 $ 507,000   $ 120,500 $ 386,000
Unevaluated properties 736,000 736,000      
Current cost discount 10.00%        
Agreement to sell the Company's Swan Creek and Pipeline assets     1,500,000    
Allowance $ 14,000 $ 14,000