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Basis of Presentation (Details Textual) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 6 Months Ended
Jun. 30, 2014
Jun. 30, 2013
Jun. 30, 2014
Jun. 30, 2013
Accounting Policies [Line Items]        
Income Tax Expense (Benefit) $ 969 $ 21 $ 520 $ 2,239
Comprehensive Income [Member]
       
Accounting Policies [Line Items]        
Income Tax Expense (Benefit)     $ 0