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Merger Agreement Recognized Identifiable Assets Acquired and Liabilities Assumed (Details) (USD $)
In Thousands, unless otherwise specified
 0 Months Ended
Jun. 11, 2014
Mar. 31, 2015
Dec. 31, 2014
Business Combination, Consideration Transferred [Abstract]      
Deferred purchase price   $ 35,998pymr_DeferredPortionofPurchasePrice $ 42,440pymr_DeferredPortionofPurchasePrice
Companhia Providencia Industria e Comercio [Member]      
Business Combination, Consideration Transferred [Abstract]      
Cash consideration paid to selling shareholders 188,117pymr_BusinessAcquisitionCostofAcquiredEntityCashPaidtoStockholders
/ us-gaap_BusinessAcquisitionAxis
= pymr_CompanhiaProvidenciaIndustriaeComercioMember		    
Cash consideration deposited into escrow 8,252pymr_BusinessAcquisitionCostofAcquiredEntityCashPaidintoEscrow
/ us-gaap_BusinessAcquisitionAxis
= pymr_CompanhiaProvidenciaIndustriaeComercioMember		    
Deferred purchase price 47,931pymr_DeferredPortionofPurchasePrice
/ us-gaap_BusinessAcquisitionAxis
= pymr_CompanhiaProvidenciaIndustriaeComercioMember		 36,000pymr_DeferredPortionofPurchasePrice
/ us-gaap_BusinessAcquisitionAxis
= pymr_CompanhiaProvidenciaIndustriaeComercioMember		  
Debt repaid 180,532us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedFinancialLiabilities
/ us-gaap_BusinessAcquisitionAxis
= pymr_CompanhiaProvidenciaIndustriaeComercioMember		    
Total consideration $ 424,832us-gaap_BusinessCombinationConsiderationTransferred1
/ us-gaap_BusinessAcquisitionAxis
= pymr_CompanhiaProvidenciaIndustriaeComercioMember