Income Taxes (Details 1) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Deferred tax assets:
Capitalized start up costs	$ 3,253	$ 3,558
Stock-based compensation	965	665
Net operating loss carryover	84,960	68,036
Other	266	258
Deferred tax asset	89,444	72,517
Valuation allowance	(47,544)	(33,802)
Deferred tax liabilities:
Property, plant and equipment	(41,900)	(38,715)
Deferred tax liabilities	(41,900)	(38,715)
Net deferred tax asset	$ 0	$ 0