Subsequent Event (Details) - a	1 Months Ended
	Apr. 15, 2019	Mar. 31, 2019
Subsequent Event (Textual)
Oil sands acreage, gross acres		36,689
Oil sands acreage, net acres		28,814
Maximum [Member]
Subsequent Event (Textual)
Nine oil sands leases with working interests range		100.00%
Minimum [Member]
Subsequent Event (Textual)
Nine oil sands leases with working interests range		25.00%
Subsequent Event [Member]
Subsequent Event (Textual)
Oil sands acreage, gross acres	633
Oil sands acreage, net acres	569
Oil sands acreage, description	The Company's oil sands acreage now covers 37,322 gross acres (29,383 net acres).