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Related-party Transactions (Details Textual) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Related Party Transaction [Line Items]    
Operating Leases Rent Expense, Net, Related Party $ 373us-gaap_OperatingCostsAndExpenses $ 828us-gaap_OperatingCostsAndExpenses
Related Parties Amount in Cost of Sales $ 8us-gaap_RelatedPartiesAmountInCostOfSales $ 31us-gaap_RelatedPartiesAmountInCostOfSales