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HUBER PRECISION BUSINESS ACQUISITION (Details) (Huber Precision, USD $)
In Thousands, unless otherwise specified
Dec. 31, 2014
Dec. 01, 2014
Huber Precision
   
Business Acquisition [Line Items]    
Inventory $ 5us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedInventory
/ us-gaap_BusinessAcquisitionAxis
= pdex_HuberPrecisionMember
 
Fixed Assets 37us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment
/ us-gaap_BusinessAcquisitionAxis
= pdex_HuberPrecisionMember
 
Covenant not to compete 30pdex_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCovenantNotToCompete
/ us-gaap_BusinessAcquisitionAxis
= pdex_HuberPrecisionMember
 
Customer list 137pdex_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCustomerList
/ us-gaap_BusinessAcquisitionAxis
= pdex_HuberPrecisionMember
 
Total purchase price $ 209us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet
/ us-gaap_BusinessAcquisitionAxis
= pdex_HuberPrecisionMember
$ 209us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet
/ us-gaap_BusinessAcquisitionAxis
= pdex_HuberPrecisionMember