Description Of Business And Significant Accounting Policies (Schedule Of Inventory) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Description Of Business And Significant Accounting Policies [Abstract]
Oil - carried at cost	$ 650	$ 679
Equipment and materials - carried at cost	752	144
Total inventory	$ 1,402	$ 823