Discontinued Operations - Discontinued Oil and Gas Operations, Assets and Liabilities, Revenue and Net Income (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Dec. 31, 2013
Current Assets:
Accounts receivable, net	$ 1		$ 6
Total Current Assets	1		6
Total Assets of Discontinued Operations	1		6
Current Liabilities:
Trade payables	17		29
Revenues and royalties payable	18		18
Accrued liabilities and other	149		113
Total Current Liabilities	184		160
Total Liabilities of Discontinued Operations	184		160
Loss from discontinued operations before taxes	$ (67)	$ (110)