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Share-Based and Long-Term Compensation Plans (Details) (USD $)
12 Months Ended 0 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Dec. 24, 2014
May 12, 2011
May 16, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Restricted shares and deferred incentive share units issued (forfeited) $ 8,200,000us-gaap_AllocatedShareBasedCompensationExpense $ 5,700,000us-gaap_AllocatedShareBasedCompensationExpense        
Nonvested awards total compensation expense not yet recognized 7,600,000us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized          
Period for recognition of compensation cost not yet recognized 1 year          
Defined Contribution Plan [Abstract]            
Percentage of matching contribution of employee's contribution (in hundredths) 50.00%pky_DefinedContributionPlanEmployerMatchingContributionPercentOfEmployeeContributions          
Percentage of maximum annual contribution per employee (in hundredths) 10.00%us-gaap_DefinedContributionPlanMaximumAnnualContributionsPerEmployeePercent          
Total expense under the plan 621,000us-gaap_DefinedContributionPlanCostRecognized 601,000us-gaap_DefinedContributionPlanCostRecognized 554,000us-gaap_DefinedContributionPlanCostRecognized      
Restricted Shares            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Equity other than options granted (in shares) 0us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockMember
         
Weighted average grant date fair value (dollars per share) $ 14.61us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockMember
$ 15.04us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockMember
       
Number of equity other than options nonvested shares 13,769us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockMember
27,391us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockMember
       
Deferred Incentive Share Units            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Equity other than options granted (in shares) 0us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod
/ us-gaap_AwardTypeAxis
= pky_DeferredIncentiveShareUnitsMember
         
Weighted average grant date fair value (dollars per share) $ 16.63us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue
/ us-gaap_AwardTypeAxis
= pky_DeferredIncentiveShareUnitsMember
$ 15.67us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue
/ us-gaap_AwardTypeAxis
= pky_DeferredIncentiveShareUnitsMember
       
Number of equity other than options nonvested shares 6,855us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber
/ us-gaap_AwardTypeAxis
= pky_DeferredIncentiveShareUnitsMember
14,880us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber
/ us-gaap_AwardTypeAxis
= pky_DeferredIncentiveShareUnitsMember
       
Stock Options            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Stock option shares granted (in shares) 0us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember
         
Weighted average exercise price (dollars per share) $ 4.17us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember
$ 4.17us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember
       
Number of forfeited shares as a result of separation agreement 62,500us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember
         
Restricted Stock Units            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Equity other than options granted (in shares) 234,021us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockUnitsRSUMember
         
Weighted average grant date fair value (dollars per share) $ 16.03us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockUnitsRSUMember
$ 17.65us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockUnitsRSUMember
       
Number of equity other than options nonvested shares 504,533us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockUnitsRSUMember
449,787us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockUnitsRSUMember
       
LTIP Units            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Equity other than options granted (in shares) 116,134us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod
/ us-gaap_AwardTypeAxis
= pky_ProfitsInterestUnitsMember
         
Weighted average grant date fair value (dollars per share) $ 9.26us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue
/ us-gaap_AwardTypeAxis
= pky_ProfitsInterestUnitsMember
$ 9.79us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue
/ us-gaap_AwardTypeAxis
= pky_ProfitsInterestUnitsMember
       
Number of equity other than options nonvested shares 300,636us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber
/ us-gaap_AwardTypeAxis
= pky_ProfitsInterestUnitsMember
214,443us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber
/ us-gaap_AwardTypeAxis
= pky_ProfitsInterestUnitsMember
       
2013 Equity Plan            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Number of shares authorized for issuance (in shares) 3,250,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized
/ us-gaap_PlanNameAxis
= pky_A2013EquityPlanMember
         
2013 Equity Plan | Stock Option and Stock Appreciation Rights            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Number of shares authorized for issuance (in shares) 2,000,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized
/ us-gaap_AwardTypeAxis
= pky_StockOptionandStockAppreciationRightsMember
/ us-gaap_PlanNameAxis
= pky_A2013EquityPlanMember
         
2013 Equity Plan | All Other Awards            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Number of shares authorized for issuance (in shares) 1,250,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized
/ us-gaap_AwardTypeAxis
= pky_AllOtherAwardsMember
/ us-gaap_PlanNameAxis
= pky_A2013EquityPlanMember
         
2013 Equity Plan | Stock Options            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Award vesting rights 25.00%us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardAwardVestingRightsPercentage
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember
/ us-gaap_PlanNameAxis
= pky_A2013EquityPlanMember
         
2013 Equity Plan | LTIP Units            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Equity other than options granted (in shares) 300,636us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod
/ us-gaap_AwardTypeAxis
= pky_ProfitsInterestUnitsMember
/ us-gaap_PlanNameAxis
= pky_A2013EquityPlanMember
         
Value of equity instruments other than options 2,800,000pky_SharebasedCompensationArrangementbySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsOutstandingValue
/ us-gaap_AwardTypeAxis
= pky_ProfitsInterestUnitsMember
/ us-gaap_PlanNameAxis
= pky_A2013EquityPlanMember
         
Weighted average grant date fair value (dollars per share) $ 9.26us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue
/ us-gaap_AwardTypeAxis
= pky_ProfitsInterestUnitsMember
/ us-gaap_PlanNameAxis
= pky_A2013EquityPlanMember
         
2011 Inducement Plan            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Number of shares authorized for issuance (in shares)         149,573us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized
/ us-gaap_PlanNameAxis
= pky_EmployeeInducementAwardPlanMember
 
2010 Equity Plan            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Number of shares authorized for issuance (in shares)           600,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized
/ us-gaap_PlanNameAxis
= pky_A2010EquityPlanMember
2010 Equity Plan | Restricted Shares            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Vesting period 4 years          
Equity other than options granted (in shares) 13,769us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockMember
/ us-gaap_PlanNameAxis
= pky_A2010EquityPlanMember
         
Value of equity instruments other than options 201,000pky_SharebasedCompensationArrangementbySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsOutstandingValue
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockMember
/ us-gaap_PlanNameAxis
= pky_A2010EquityPlanMember
         
Weighted average grant date fair value (dollars per share) $ 14.61us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockMember
/ us-gaap_PlanNameAxis
= pky_A2010EquityPlanMember
         
2010 Equity Plan | Deferred Incentive Share Units            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Vesting period 4 years          
Equity other than options granted (in shares) 6,855us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod
/ us-gaap_AwardTypeAxis
= pky_DeferredIncentiveShareUnitsMember
/ us-gaap_PlanNameAxis
= pky_A2010EquityPlanMember
         
Value of equity instruments other than options 114,000pky_SharebasedCompensationArrangementbySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsOutstandingValue
/ us-gaap_AwardTypeAxis
= pky_DeferredIncentiveShareUnitsMember
/ us-gaap_PlanNameAxis
= pky_A2010EquityPlanMember
         
Weighted average grant date fair value (dollars per share) $ 16.63us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue
/ us-gaap_AwardTypeAxis
= pky_DeferredIncentiveShareUnitsMember
/ us-gaap_PlanNameAxis
= pky_A2010EquityPlanMember
         
25% per Year in the First Four Years | 2013 Equity Plan | Stock Options            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Stock option shares granted (in shares) 1,293,750us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember
/ us-gaap_PlanNameAxis
= pky_A2013EquityPlanMember
/ us-gaap_VestingAxis
= pky_A25perYearintheFirstFourYearsMember
         
Value of stock options 5,400,000pky_SharebasedCompensationArrangementbySharebasedPaymentAwardOptionsOutstandingValue
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember
/ us-gaap_PlanNameAxis
= pky_A2013EquityPlanMember
/ us-gaap_VestingAxis
= pky_A25perYearintheFirstFourYearsMember
         
Weighted average exercise price (dollars per share) $ 4.17us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember
/ us-gaap_PlanNameAxis
= pky_A2013EquityPlanMember
/ us-gaap_VestingAxis
= pky_A25perYearintheFirstFourYearsMember
         
25% per Year in the First Four Years | 2013 Equity Plan | Restricted Stock Units            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Award vesting rights 25.00%us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardAwardVestingRightsPercentage
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockUnitsRSUMember
/ us-gaap_PlanNameAxis
= pky_A2013EquityPlanMember
/ us-gaap_VestingAxis
= pky_A25perYearintheFirstFourYearsMember
         
Number of equity other than options nonvested shares 138,380us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockUnitsRSUMember
/ us-gaap_PlanNameAxis
= pky_A2013EquityPlanMember
/ us-gaap_VestingAxis
= pky_A25perYearintheFirstFourYearsMember
         
Time vesting | 2013 Equity Plan | Restricted Stock Units            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Equity other than options granted (in shares) 372,645us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockUnitsRSUMember
/ us-gaap_PlanNameAxis
= pky_A2013EquityPlanMember
/ us-gaap_VestingAxis
= pky_TimeMember
         
Value of equity instruments other than options 6,900,000pky_SharebasedCompensationArrangementbySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsOutstandingValue
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockUnitsRSUMember
/ us-gaap_PlanNameAxis
= pky_A2013EquityPlanMember
/ us-gaap_VestingAxis
= pky_TimeMember
         
Weighted average grant date fair value (dollars per share) $ 18.49us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockUnitsRSUMember
/ us-gaap_PlanNameAxis
= pky_A2013EquityPlanMember
/ us-gaap_VestingAxis
= pky_TimeMember
         
33% per Year in the First Three Years | 2013 Equity Plan | Restricted Stock Units            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Award vesting rights 33.00%us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardAwardVestingRightsPercentage
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockUnitsRSUMember
/ us-gaap_PlanNameAxis
= pky_A2013EquityPlanMember
/ us-gaap_VestingAxis
= pky_A33perYearintheFirstThreeYearsMember
         
Number of equity other than options nonvested shares 234,265us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockUnitsRSUMember
/ us-gaap_PlanNameAxis
= pky_A2013EquityPlanMember
/ us-gaap_VestingAxis
= pky_A33perYearintheFirstThreeYearsMember
         
Performance vesting | 2013 Equity Plan | Restricted Stock Units            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Equity other than options granted (in shares) 131,888us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockUnitsRSUMember
/ us-gaap_PlanNameAxis
= pky_A2013EquityPlanMember
/ us-gaap_VestingAxis
= pky_PerformanceMember
         
Value of equity instruments other than options 1,200,000pky_SharebasedCompensationArrangementbySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsOutstandingValue
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockUnitsRSUMember
/ us-gaap_PlanNameAxis
= pky_A2013EquityPlanMember
/ us-gaap_VestingAxis
= pky_PerformanceMember
         
Weighted average grant date fair value (dollars per share) $ 9.08us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockUnitsRSUMember
/ us-gaap_PlanNameAxis
= pky_A2013EquityPlanMember
/ us-gaap_VestingAxis
= pky_PerformanceMember
         
Minimum | 2013 Equity Plan            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Vesting period 3 years          
Minimum | Performance vesting | 2013 Equity Plan            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Vesting period 1 year          
Executive Vice President            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Accelerated compensation expenses related to separation agreement $ 274,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAcceleratedCompensationCost
/ us-gaap_TitleOfIndividualAxis
= us-gaap_ExecutiveVicePresidentMember
         
Executive Vice President | Restricted Shares            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Number of accelerated vesting shares as a result of separation agreement       844us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardAcceleratedVestingNumber
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockMember
/ us-gaap_TitleOfIndividualAxis
= us-gaap_ExecutiveVicePresidentMember
   
Number of forfeited shares as a result of separation agreement       533us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockMember
/ us-gaap_TitleOfIndividualAxis
= us-gaap_ExecutiveVicePresidentMember
   
Executive Vice President | Stock Options            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Number of accelerated vesting shares as a result of separation agreement       31,250us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardAcceleratedVestingNumber
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember
/ us-gaap_TitleOfIndividualAxis
= us-gaap_ExecutiveVicePresidentMember
   
Number of forfeited shares as a result of separation agreement       62,500us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember
/ us-gaap_TitleOfIndividualAxis
= us-gaap_ExecutiveVicePresidentMember
   
Executive Vice President | Restricted Stock Units            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Number of accelerated vesting shares as a result of separation agreement       13,777us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardAcceleratedVestingNumber
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockUnitsRSUMember
/ us-gaap_TitleOfIndividualAxis
= us-gaap_ExecutiveVicePresidentMember
   
Number of forfeited shares as a result of separation agreement       21,267us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockUnitsRSUMember
/ us-gaap_TitleOfIndividualAxis
= us-gaap_ExecutiveVicePresidentMember
   
Executive Vice President | LTIP Units            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Number of forfeited shares as a result of separation agreement       29,941us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod
/ us-gaap_AwardTypeAxis
= pky_ProfitsInterestUnitsMember
/ us-gaap_TitleOfIndividualAxis
= us-gaap_ExecutiveVicePresidentMember