Quarterly report pursuant to Section 13 or 15(d)

Asset Retirement Obligation (Details Narrative)

v3.8.0.1
Asset Retirement Obligation (Details Narrative) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2017
Sep. 30, 2017
Dec. 31, 2016
Asset retirement obligation $ 691 $ 691
Accretion expense 11 21  
Other Assets [Member]      
Contributed to the Trust Fund on October 31, 2016 100 100  
Contributed to the Trust Fund will be due and payable on October 31, 2017 350 350  
Contributed to the Trust Fund will be due on October 31, 2018 $ 220 $ 220