Unproved Oil and Gas Properties, Full Cost Method (Tables)

12 Months Ended

Dec. 31, 2018

Unproved Oil and Gas Properties, Full Cost Method [Abstract]

Schedule of unproved oil and gas properties, full cost method

Unproved oil and gas properties, under the full cost method, are comprised as follows:

	December 31, 2018		December 31, 2017
	US$ thousands		US$ thousands
Excluded from amortization base:
Drilling costs, and other operational related costs		1,242		14,999
Capitalized salary costs		1,579		2,034
Capitalized interest costs		677		346
Legal costs, license fees and other preparation costs		3,216		4,087
Other costs		-		229
		6,714		21,695

Impairment of unproved oil and gas properties comprised as follows:

	For the year ended December 31,
	2018		2017		2016
	US$ thousands		US$ thousands		US$ thousands
Excluded from amortization base:
Drilling costs, and other operational related costs		27,371		-		-
Capitalized salary costs		1,006		-		-
Legal costs, license fees and other preparation costs		2,039		-		-
Other costs		490		-		-
		30,906		-		-

Schedule of changes in unproved oil and gas properties

Changes in Unproved oil and gas properties during the years ended December 31, 2018, 2017, 2016, are as follows: 

	December 31, 2018			December 31, 2017		December 31, 2016
	US$ thousands			US$ thousands		US$ thousands
Excluded from amortization base:
Drilling costs, and other operational related costs		13,614			13,229		458
Capitalized salary costs		551			455		402
Capitalized interest costs		331			346		-
Legal costs, license fees and other preparation costs		1,168			1,069		512
Other costs		261			199		3
Impairment of unproved oil and gas properties		(30,906	)		-		-
		(*14,981	)		*15,298		*1,375

* Inclusive of non-cash amounts of approximately $3,625,000, $4,478,000 and $238,000 during the years 2018, 2017 and 2016, respectively