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Note 6 - Equity Compensation Plans (Details) (USD $)
12 Months Ended 0 Months Ended 9 Months Ended 12 Months Ended 0 Months Ended
Dec. 31, 2014
Mar. 06, 2014
May 17, 2013
Jun. 12, 2014
Oct. 31, 2013
Dec. 31, 2013
Dec. 31, 2013
Jan. 29, 2013
Note 6 - Equity Compensation Plans (Details) [Line Items]                
Stock Issued During Period, Value, Employee Stock Purchase Plan (in Dollars) $ 11,139,000us-gaap_StockIssuedDuringPeriodValueEmployeeStockPurchasePlan              
The 2013 Plan [Member]                
Note 6 - Equity Compensation Plans (Details) [Line Items]                
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized           15,500,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized
/ us-gaap_PlanNameAxis
= pah_The2013PlanMember
15,500,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized
/ us-gaap_PlanNameAxis
= pah_The2013PlanMember
 
Share-based Compensation Arrangement by Share-based Payment Award, Shares Issued in Period 9,242us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardSharesIssuedInPeriod
/ us-gaap_PlanNameAxis
= pah_The2013PlanMember
             
Share-based Compensation Arrangement by Share-based Payment Award, Number Of Participants 2,486pah_SharebasedCompensationArrangementBySharebasedPaymentAwardNumberOfParticipants
/ us-gaap_PlanNameAxis
= pah_The2013PlanMember
             
Employee Stock Purchase Plan [Member]                
Note 6 - Equity Compensation Plans (Details) [Line Items]                
Share-based Compensation Arrangement by Share-based Payment Award, Number Of Participants 513pah_SharebasedCompensationArrangementBySharebasedPaymentAwardNumberOfParticipants
/ us-gaap_PlanNameAxis
= pah_EmployeeStockPurchasePlanMember
             
Share-based Compensation Arrangement by Share-based Payment Award, Number of Additional Shares Authorized   5,178,815us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfAdditionalSharesAuthorized
/ us-gaap_PlanNameAxis
= pah_EmployeeStockPurchasePlanMember
           
Officer [Member] | The 2013 Plan [Member]                
Note 6 - Equity Compensation Plans (Details) [Line Items]                
Share-based Compensation Arrangement by Share-based Payment Award, Number Of Participants 5pah_SharebasedCompensationArrangementBySharebasedPaymentAwardNumberOfParticipants
/ us-gaap_PlanNameAxis
= pah_The2013PlanMember
/ us-gaap_TitleOfIndividualAxis
= us-gaap_OfficerMember
             
Director [Member] | The 2013 Plan [Member]                
Note 6 - Equity Compensation Plans (Details) [Line Items]                
Share-based Compensation Arrangement by Share-based Payment Award, Number Of Participants 6pah_SharebasedCompensationArrangementBySharebasedPaymentAwardNumberOfParticipants
/ us-gaap_PlanNameAxis
= pah_The2013PlanMember
/ us-gaap_TitleOfIndividualAxis
= us-gaap_DirectorMember
             
Consultant [Member] | The 2013 Plan [Member]                
Note 6 - Equity Compensation Plans (Details) [Line Items]                
Share-based Compensation Arrangement by Share-based Payment Award, Number Of Participants 1pah_SharebasedCompensationArrangementBySharebasedPaymentAwardNumberOfParticipants
/ us-gaap_PlanNameAxis
= pah_The2013PlanMember
/ us-gaap_TitleOfIndividualAxis
= pah_ConsultantMember
             
Non-founder Directors [Member]                
Note 6 - Equity Compensation Plans (Details) [Line Items]                
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross     250,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross
/ us-gaap_TitleOfIndividualAxis
= pah_Non-founderDirectorsMember
         
Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price (in Dollars per share)     $ 11.50us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice
/ us-gaap_TitleOfIndividualAxis
= pah_Non-founderDirectorsMember
         
Successor [Member]                
Note 6 - Equity Compensation Plans (Details) [Line Items]                
Stock Issued During Period, Value, Employee Stock Purchase Plan (in Dollars) 200,000us-gaap_StockIssuedDuringPeriodValueEmployeeStockPurchasePlan
/ us-gaap_StatementScenarioAxis
= us-gaap_SuccessorMember
             
Restricted Stock Units (RSUs) [Member] | The 2013 Plan [Member]                
Note 6 - Equity Compensation Plans (Details) [Line Items]                
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period   329,823us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockUnitsRSUMember
/ us-gaap_PlanNameAxis
= pah_The2013PlanMember
           
Employee Service Share-based Compensation, Nonvested Awards, Compensation Not yet Recognized, Share-based Awards Other than Options (in Dollars) 7,100,000us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedShareBasedAwardsOtherThanOptions
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockUnitsRSUMember
/ us-gaap_PlanNameAxis
= pah_The2013PlanMember
             
Allocated Share-based Compensation Expense (in Dollars) 400,000us-gaap_AllocatedShareBasedCompensationExpense
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockUnitsRSUMember
/ us-gaap_PlanNameAxis
= pah_The2013PlanMember
             
Restricted Stock Units (RSUs) [Member] | Director [Member] | The 2013 Plan [Member]                
Note 6 - Equity Compensation Plans (Details) [Line Items]                
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period       9,242us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockUnitsRSUMember
/ us-gaap_PlanNameAxis
= pah_The2013PlanMember
/ us-gaap_TitleOfIndividualAxis
= us-gaap_DirectorMember
       
Allocated Share-based Compensation Expense (in Dollars) 300,000us-gaap_AllocatedShareBasedCompensationExpense
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockUnitsRSUMember
/ us-gaap_PlanNameAxis
= pah_The2013PlanMember
/ us-gaap_TitleOfIndividualAxis
= us-gaap_DirectorMember
             
Restricted Stock Units (RSUs) [Member] | Certain Employees [Member] | The 2013 Plan [Member]                
Note 6 - Equity Compensation Plans (Details) [Line Items]                
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period 139,610us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockUnitsRSUMember
/ us-gaap_PlanNameAxis
= pah_The2013PlanMember
/ us-gaap_TitleOfIndividualAxis
= pah_CertainEmployeesMember
             
Allocated Share-based Compensation Expense (in Dollars) 600,000us-gaap_AllocatedShareBasedCompensationExpense
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockUnitsRSUMember
/ us-gaap_PlanNameAxis
= pah_The2013PlanMember
/ us-gaap_TitleOfIndividualAxis
= pah_CertainEmployeesMember
             
Restricted Stock Units (RSUs) [Member] | Non-Employees [Member] | The 2013 Plan [Member]                
Note 6 - Equity Compensation Plans (Details) [Line Items]                
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period 2,500us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockUnitsRSUMember
/ us-gaap_PlanNameAxis
= pah_The2013PlanMember
/ us-gaap_TitleOfIndividualAxis
= pah_NonEmployeesMember
             
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period 10 months              
Restricted Stock Units (RSUs) [Member] | Administrative Expense [Member] | The 2013 Plan [Member]                
Note 6 - Equity Compensation Plans (Details) [Line Items]                
Allocated Share-based Compensation Expense (in Dollars) 100,000us-gaap_AllocatedShareBasedCompensationExpense
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockUnitsRSUMember
/ us-gaap_NatureOfExpenseAxis
= pah_AdministrativeExpenseMember
/ us-gaap_PlanNameAxis
= pah_The2013PlanMember
             
Restricted Stock Units (RSUs) [Member] | Minimum [Member] | Certain Employees [Member] | The 2013 Plan [Member]                
Note 6 - Equity Compensation Plans (Details) [Line Items]                
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period 36 months              
Restricted Stock Units (RSUs) [Member] | Minimum [Member] | Non-Employees [Member] | The 2013 Plan [Member]                
Note 6 - Equity Compensation Plans (Details) [Line Items]                
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value (in Dollars per share) $ 20.97us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockUnitsRSUMember
/ us-gaap_PlanNameAxis
= pah_The2013PlanMember
/ us-gaap_RangeAxis
= us-gaap_MinimumMember
/ us-gaap_TitleOfIndividualAxis
= pah_NonEmployeesMember
             
Restricted Stock Units (RSUs) [Member] | Maximum [Member] | Certain Employees [Member] | The 2013 Plan [Member]                
Note 6 - Equity Compensation Plans (Details) [Line Items]                
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period 60 months              
Restricted Stock Units (RSUs) [Member] | Maximum [Member] | Non-Employees [Member] | The 2013 Plan [Member]                
Note 6 - Equity Compensation Plans (Details) [Line Items]                
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value (in Dollars per share) $ 28.36us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockUnitsRSUMember
/ us-gaap_PlanNameAxis
= pah_The2013PlanMember
/ us-gaap_RangeAxis
= us-gaap_MaximumMember
/ us-gaap_TitleOfIndividualAxis
= pah_NonEmployeesMember
             
Employee Stock Option [Member] | Non-founder Directors [Member]                
Note 6 - Equity Compensation Plans (Details) [Line Items]                
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period     5 years          
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Exercise Price (in Dollars per share)     $ 11.50us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExercisePrice
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember
/ us-gaap_TitleOfIndividualAxis
= pah_Non-founderDirectorsMember
         
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate     18.49%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember
/ us-gaap_TitleOfIndividualAxis
= pah_Non-founderDirectorsMember
         
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate     0.37%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember
/ us-gaap_TitleOfIndividualAxis
= pah_Non-founderDirectorsMember
         
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term     5 years          
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Exercisable, Weighted Average Remaining Contractual Term         4 years 146 days      
Employee Stock Option [Member] | Successor [Member]                
Note 6 - Equity Compensation Plans (Details) [Line Items]                
Allocated Share-based Compensation Expense (in Dollars)           200,000us-gaap_AllocatedShareBasedCompensationExpense
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember
/ us-gaap_StatementScenarioAxis
= us-gaap_SuccessorMember
   
Class C Junior Shares [Member] | MacDermid [Member]                
Note 6 - Equity Compensation Plans (Details) [Line Items]                
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number               4,890,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber
/ dei_LegalEntityAxis
= pah_MacDermidMember
/ us-gaap_StatementClassOfStockAxis
= pah_ClassCJuniorSharesMember
Class C Junior Shares [Member] | Predecessor [Member] | MacDermid [Member]                
Note 6 - Equity Compensation Plans (Details) [Line Items]                
Allocated Share-based Compensation Expense (in Dollars)             $ 9,000,000us-gaap_AllocatedShareBasedCompensationExpense
/ dei_LegalEntityAxis
= pah_MacDermidMember
/ us-gaap_StatementClassOfStockAxis
= pah_ClassCJuniorSharesMember
/ us-gaap_StatementScenarioAxis
= us-gaap_PredecessorMember
 
Class C Junior Shares [Member] | Restricted Stock [Member] | Predecessor [Member] | MacDermid [Member]                
Note 6 - Equity Compensation Plans (Details) [Line Items]                
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period               5,000,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockMember
/ dei_LegalEntityAxis
= pah_MacDermidMember
/ us-gaap_StatementClassOfStockAxis
= pah_ClassCJuniorSharesMember
/ us-gaap_StatementScenarioAxis
= us-gaap_PredecessorMember
Class C-1 Junior Shares [Member] | Predecessor [Member] | MacDermid [Member]                
Note 6 - Equity Compensation Plans (Details) [Line Items]                
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period               1,666,666us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod
/ dei_LegalEntityAxis
= pah_MacDermidMember
/ us-gaap_StatementClassOfStockAxis
= pah_ClassC1JuniorSharesMember
/ us-gaap_StatementScenarioAxis
= us-gaap_PredecessorMember
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number               1,630,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber
/ dei_LegalEntityAxis
= pah_MacDermidMember
/ us-gaap_StatementClassOfStockAxis
= pah_ClassC1JuniorSharesMember
/ us-gaap_StatementScenarioAxis
= us-gaap_PredecessorMember
Class C-2 Junior Shares [Member] | Predecessor [Member] | MacDermid [Member]                
Note 6 - Equity Compensation Plans (Details) [Line Items]                
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period               1,666,666us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod
/ dei_LegalEntityAxis
= pah_MacDermidMember
/ us-gaap_StatementClassOfStockAxis
= pah_ClassC2JuniorSharesMember
/ us-gaap_StatementScenarioAxis
= us-gaap_PredecessorMember
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number               1,630,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber
/ dei_LegalEntityAxis
= pah_MacDermidMember
/ us-gaap_StatementClassOfStockAxis
= pah_ClassC2JuniorSharesMember
/ us-gaap_StatementScenarioAxis
= us-gaap_PredecessorMember
Class C-3 Junior Shares [Member] | Predecessor [Member] | MacDermid [Member]                
Note 6 - Equity Compensation Plans (Details) [Line Items]                
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period               1,666,666us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod
/ dei_LegalEntityAxis
= pah_MacDermidMember
/ us-gaap_StatementClassOfStockAxis
= pah_ClassC3JuniorSharesMember
/ us-gaap_StatementScenarioAxis
= us-gaap_PredecessorMember
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number               1,630,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber
/ dei_LegalEntityAxis
= pah_MacDermidMember
/ us-gaap_StatementClassOfStockAxis
= pah_ClassC3JuniorSharesMember
/ us-gaap_StatementScenarioAxis
= us-gaap_PredecessorMember