Income Taxes (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Jul. 23, 2013
Deferred tax liabilities [Abstract]
Marketable securities	$ 0	$ 28,000	$ 36,000
Canada full cost pool	0	0	377,000
Investment in Blue Eagle	0	0	7,527,000
Hedge contracts	0	0	345,000
Deferred Tax Liabilities, Other	3,152,000	0	0
Total deferred tax liabilities	3,152,000	28,000	8,285,000
Deferred tax assets [Abstract]
U.S. full cost pool	11,725,000	13,837,000	29,976,000
Canada full cost pool	4,081,000	3,720,000	0
Depletion carryforward	4,743,000	4,930,000	4,842,000
U.S. net operating loss carryforward	49,667,000	59,362,000	52,564,000
Canada net operating loss carryforward	5,736,000	4,196,000	2,151,000
Alternative minimum tax credit	1,369,000	422,000	422,000
Hedge contracts	1,397,000	2,231,000	0
Other	0	1,042,000	1,811,000
Total deferred tax assets	78,718,000	89,740,000	91,766,000
Valuation allowance for deferred tax assets	(75,566,000)	(89,712,000)	(83,481,000)
Net deferred tax assets	3,152,000	28,000	8,285,000
Net deferred tax	0	0	0
Current [Abstract]
Federal	632,000	310,000	(77,000)
State	68,000	0	0
Foreign	0	0	0
Current provision (benefit) for income taxes	700,000	310,000	(77,000)
Deferred [Abstract]
Federal	0	0	0
Foreign	0	0	0
Deferred provision (benefit) for income taxes	0	0	0
Operating Loss Carryforwards [Line Items]
Income taxes paid				391,000
Tax Adjustments, Settlements, and Unusual Provisions	81,000
Reconciliation of income tax computed at U.S federal statutory tax rates [Abstract]
Tax (expense) benefit at U.S. statutory rates (35%)	(13,771,000)	6,468,000	(4,809,000)
(Increase) decrease in deferred tax asset valuation allowance	14,146,000	(6,231,000)	5,408,000
Rate differential for non U.S. income	(574,000)	(1,533,000)	(46,000)
State income taxes	(47,000)	0	0
Accrual of prior year federal taxes (2009)	(81,000)	(310,000)	0
Permanent differences	(743,000)	(732,000)	(533,000)
Increase in asset for partnership distributions	0	1,945,000	0
Other	370,000	83,000	57,000
Income tax (expense) benefit	(700,000)	(310,000)	77,000
U.S statutory rate (in hundredths)	35.00%
Reduction in deferred tax assets	11,000,000
Tax adjustment assessed	619,000	310,000
U.S. Tax [Member]
Operating Loss Carryforwards [Line Items]
Net operating loss carryforwards	141,900,000
Expiration dates of operating loss carryforwards	2033
Canadian Tax [Member]
Operating Loss Carryforwards [Line Items]
Net operating loss carryforwards	$ 20,500,000
Expiration dates of operating loss carryforwards	2033