SIGNIFICANT ACCOUNTING POLICIES - Oil and Gas Properties (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Accounting Policies [Abstract]
Capitalized Certain Payroll and Other Internal Costs	$ 995	$ 882	$ 930
Capitalized Interest Costs	644	147	148
Total	$ 1,638	$ 1,029	$ 1,078