Other Long-Term Liabilities and Deferred Credits - Schedule of Other Long-Term Liabilities and Deferred Credits (Details) - USD ($) $ in Thousands		Dec. 31, 2015	Dec. 31, 2014
Other long-term liabilities and deferred credits		$ 800	$ 500
Royalties Payable [Member]
Other long-term liabilities and deferred credits	[1]	500	$ 500
UNC Purchase Contract [Member]
Other long-term liabilities and deferred credits	[2]	$ 300
Crownpoint Property [Member]
Other long-term liabilities and deferred credits	[1]		$ 450

[1] Royalties payable and Crownpoint property liability were derived during prior years of production. Liabilities do not accrue interest or have a stated maturity date. Additionally, as the Company currently has entered into a binding letter of intent to sell the Crownpoint property, the $450,000 liability has been included in liabilities held for sale as of December 31, 2015.

[2] On November 5, 2015, the Company and UNC agreed to amend the terms of the Data Purchase Agreement. As a result, the $0.4 million payment due on August 18, 2015 under the original agreement has been extended and is payable in quarterly installments, bearing interest of 5% per annum, over a period of four years beginning on January 1, 2016. The Company has classified $0.1 million as short-liabilities and the remaining $0.3 million as a long-term liability