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General - Depreciation (Details) (General and Administrative Expense [Member], USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
General and Administrative Expense [Member]
Public Utility, Property, Plant and Equipment [Line Items]
Depreciation	$ 384	$ 383

The amount of expense recognized in the current period that reflects the allocation of the cost of tangible assets over the assets' useful lives. Includes production and non-production related depreciation.

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