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CONSOLIDATED BALANCE SHEETS (Unaudited) (Parentheticals) (USD $)
In Thousands, unless otherwise specified
Mar. 31, 2015
Dec. 31, 2014
Statement Of Financial Position [Abstract]    
Accumulated depreciation $ 24,324us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment $ 24,180us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment