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Interest and Debt Expense - Details of Interest and Debt Expense (Details) (USD $)
In Thousands, unless otherwise specified
 3 Months Ended
Mar. 31, 2015
Mar. 31, 2014
Interest And Debt Expense [Line Items]    
Interest and debt expense $ 41,304pgre_InterestAndDebtCostsIncludingCapitalizedInterestExcludingAmortizationOfFinancingCosts  
Amortization of deferred financing costs 584us-gaap_AmortizationOfFinancingCosts  
Total interest and debt expense 41,888us-gaap_InterestAndDebtExpense  
Predecessor [Member]    
Interest And Debt Expense [Line Items]    
Interest and debt expense   7,691pgre_InterestAndDebtCostsIncludingCapitalizedInterestExcludingAmortizationOfFinancingCosts
/ us-gaap_StatementScenarioAxis
= us-gaap_PredecessorMember
Amortization of deferred financing costs   108us-gaap_AmortizationOfFinancingCosts
/ us-gaap_StatementScenarioAxis
= us-gaap_PredecessorMember
Total interest and debt expense   $ 7,799us-gaap_InterestAndDebtExpense
/ us-gaap_StatementScenarioAxis
= us-gaap_PredecessorMember