Discontinued Operations - Discontinued Oil and Gas Operations, Assets and Liabilities, Revenue and Net Income (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012	Dec. 31, 2012
Current Assets:
Accounts receivable, net	$ 107		$ 107
Total Current Assets	107		107
Total Assets of Discontinued Operations	107		107
Current Liabilities:
Trade payables	106		106		3
Revenues and royalties payable	18		18		17
Accrued liabilities and other	125		125		227
Total Current Liabilities	249		249		247
Total Liabilities of Discontinued Operations	249		249		247
Loss from discontinued operations before taxes	$ (161)	$ (43)	$ (271)	$ (220)