Income Taxes (Tables)

12 Months Ended

Dec. 31, 2013

Income Tax Disclosure [Abstract]

Components of Deferred Tax Liabilities and Assets

Deferred income taxes reflect the net tax effects of temporary differences between the carrying amounts of assets and liabilities for financial reporting purposes and the amounts used for income tax purposes.  Significant components of the Company’s deferred tax liabilities and assets are as follows:

	Years Ended December 31,
	2011			2012			2013
	(In thousands)
Deferred tax liabilities:
Marketable securities	$	36		$	28		$	—
Canada full cost pool	377			—			—
Investment in Blue Eagle	7,527			—			—
Hedge contracts	345			—			—
Other	—			—			3,152
Total deferred tax liabilities	8,285			28			3,152
Deferred tax assets:
U.S. full cost pool	29,976			13,837			11,725
Canada full cost pool	—			3,720			4,081
Depletion carryforward	4,842			4,930			4,743
U.S. net operating loss  carryforward	52,564			59,362			49,667
Canada net operating loss carryforward	2,151			4,196			5,736
Alternative minimum tax credit	422			422			1,369
Hedge contracts	—			2,231			1,397
Other	1,811			1,042			—
Total deferred tax assets	91,766			89,740			78,718
Valuation allowance for deferred tax assets	(83,481		)	(89,712		)	(75,566		)
Net deferred tax assets	8,285			28			3,152
Net deferred tax	$	—		$	—		$	—

Components of Provision (Benefit) for Income Taxes

Significant components of the provision (benefit) for income taxes are as follows:

	Years ended December 31,
	2011			2012		2013
	(In thousands)
Current:
Federal	$	(77	)	$	310	$	632
State	—			—		68
Foreign	—			—		—
	$	(77	)	$	310	$	700
Deferred:
Federal	$	—		$	—	$	—
Foreign	—			—		—
	$	—		$	—	$	—

Reconciliation of Income Tax Computed At U.S. Federal Statutory Tax Rates to Income Tax Expense

The reconciliation of income tax computed at the U.S. federal statutory tax rates to income tax expense is:

	Years ended December 31,
	2011			2012			2013
	(In thousands)
Tax (expense) benefit at U.S. statutory rates (35%)	$	(4,809	)	$	6,468		$	(13,771	)
(Increase) decrease in deferred tax asset valuation allowance	5,408			(6,231		)	14,146
Rate differential for non U.S. income	(46		)	(1,533		)	(574		)
State income taxes	—			—			(47		)
Accrual of prior year federal taxes (2009)	—			(310		)	(81		)
Permanent differences	(533		)	(732		)	(743		)
Increase in asset  for partnership distribution	—			1,945			—
Other	57			83			370
	$	77		$	(310	)	$	(700	)