Supplemental Oil and Gas Disclosures (Unaudited) (Details 1) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Costs Incurred in Acquisition, Exploration, and Development Activities Detail [Table]
Acquisition	$ 0	$ 0	$ 141
Exploration	0	0	0
Development	0	0	5,798
Total costs incurred	0	0	5,939
Results of Operations for Producing Activities Detail [Table]
Oil and gas sales revenues	5,560	6,158	81,941
Production (lifting) costs	2,637	3,749	33,496
Depreciation, depletion, and amortization	37	60	27,640
Impairments of properties	0	0	15,233
Excess decommissioning and abandonment costs	75,313	40,767	78,382
Exploration expenses	0	0	77
Accretion expense	87	979	3,705
Dry hole costs	0	0	(32)
Gain on insurance recoveries	(5,685)	0	0
Pretax income (loss) from producing activities	(66,829)	(39,397)	(76,560)
Income tax expense (benefit)	(23,390)	(13,789)	(26,797)
Results of oil and gas producing activities	$ (43,439)	$ (25,608)	$ (49,763)