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General - Depreciation (Details) (General and Administrative Expense, USD $)
In Thousands, unless otherwise specified
3 Months Ended 9 Months Ended
Sep. 30, 2014
Sep. 30, 2013
Sep. 30, 2014
Sep. 30, 2013
General and Administrative Expense
       
Public Utility, Property, Plant and Equipment [Line Items]        
Depreciation $ 396 $ 385 $ 1,188 $ 1,164