10. Derivative Instruments (Details-Oustanding Derivative Contracts)	12 Months Ended
	Dec. 31, 2015 $ / bbl bbl
Crude Oil Swaps 1 [Member]
Outstanding derivative contracts Settlement Period	April 1, 2016 - May 31, 2016
Outstanding derivative contracts, amount of oil (in Barrels) | bbl	10,000
Outstanding derivative contract, fixed price	90.36
Crude Oil Swaps 2 [Member]
Outstanding derivative contracts Settlement Period	April 1, 2016 - May 31, 2016
Outstanding derivative contracts, amount of oil (in Barrels) | bbl	4,000
Outstanding derivative contract, fixed price	88.15
Crude Oil Swaps 3 [Member]
Outstanding derivative contracts Settlement Period	April 1, 2016 - May 31, 2016
Outstanding derivative contracts, amount of oil (in Barrels) | bbl	15,000
Outstanding derivative contract, fixed price	62.88
Crude Oil Costless Collars1 [Member]
Outstanding derivative contracts Settlement Period	April 1, 2016 - May 31, 2016
Outstanding derivative contracts, amount of oil (in Barrels) | bbl	3,334
Outstanding derivative contracts Floor/Ceiling basis	NYMEX
Crude Oil Costless Collars1 [Member] | Minimum [Member]
Outstanding derivative contract, fixed price	80.00
Crude Oil Costless Collars1 [Member] | Maximum [Member]
Outstanding derivative contract, fixed price	89.50