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Acquisition (Details) (USD $)
3 Months Ended
Mar. 28, 2014
Apr. 03, 2015
Purchase price $ 3,000,000us-gaap_BusinessCombinationConsiderationTransferred1  
Shares granted to sellers 1,000,000us-gaap_BusinessCombinationConsiderationTransferredEquityInterestsIssuedAndIssuable  
Contingent consideration 8,000,000us-gaap_BusinessAcquisitionPreacquisitionContingencyAmountOfSettlement  
Compensation expense 900,000us-gaap_SalariesAndWages  
Bargain purchase gain from acquisition 3,015,000us-gaap_BusinessCombinationBargainPurchaseGainRecognizedAmount  
Acquired intangible assets $ 7,700,000us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibles  
Minimum [Member]    
Amortization period   2 years
Maximum [Member]    
Amortization period   5 years