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Balance Sheet Details Other Non-Current Liabilities (Details) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2014
Dec. 31, 2013
Balance Sheet Details [Abstract]    
Unrecognized Tax Benefits $ 3,178us-gaap_UnrecognizedTaxBenefits $ 2,806us-gaap_UnrecognizedTaxBenefits
Business Acquisition Contingent Consideration at Fair Value Long Term 3,797rtec_BusinessAcquisitionContingentConsiderationatFairValueLongTerm 4,340rtec_BusinessAcquisitionContingentConsiderationatFairValueLongTerm
Other Liabilities 1,695us-gaap_OtherLiabilities 1,772us-gaap_OtherLiabilities
Other Liabilities, Noncurrent $ 8,670us-gaap_OtherLiabilitiesNoncurrent $ 8,918us-gaap_OtherLiabilitiesNoncurrent