| Component: (Network and Table) | |
|---|---|
| Network | 050 - Disclosure - 12. Asset Retirement Obligation  (Details) - Schedule of Change in Asset Retirement Obligation (http://www.isramcousa.com/role/ScheduleofChangeinAssetRetirementObligationTable)  | 
| Table | (Implied) | 
| Reporting Entity [Axis] | 0000719209 (http://www.sec.gov/CIK) | 
| Schedule of Change in Asset Retirement Obligation [Abstract] | Period [Axis] | ||
|---|---|---|---|
2016-01-01 - 2016-12-31  | 2015-01-01 - 2015-12-31  | 2014-01-01 - 2014-12-31  | |
Schedule of Change in Asset Retirement Obligation [Abstract]  | |||
Liability for asset retirement obligation at the beginning of the year  | |||
Liabilities Incurred  | 1,000    | 17,000    | 423,000    | 
Liabilities settled and divested  | (34,000)   | (1,035,000)   | (65,000)   | 
Accretion expense  | 897,000    | 856,000    | 874,000    | 
Liability for asset retirement obligation at the end of the year  | 19,884,000    | 20,046,000    | |