COMBINED CONSOLIDATED STATEMENTS OF CASH FLOWS (UNAUDITED) (USD $) In Thousands, unless otherwise specified	3 Months Ended
Mar. 31, 2015	Mar. 31, 2014
CASH FLOWS FROM OPERATING ACTIVITIES
Net (loss) income	$ (11,427)us-gaap_ProfitLoss
Adjustments to reconcile net (loss) income to net cash used in operating activities:
Depreciation and amortization	73,583us-gaap_DepreciationAndAmortization
Unrealized gains on interest rate swaps	(11,978)us-gaap_UnrealizedGainLossOnDerivatives
Straight-lining of rental income	(15,994)us-gaap_StraightLineRent
Other non-cash adjustments	4,834us-gaap_OtherNoncashIncomeExpense
Realized and unrealized gains, net on real estate fund investments	(873)pgre_RealizedAndUnrealizedGainsNet
Income from partially owned entities	(975)
Distributions of income from partially owned entities	353
Amortization of below-market leases, net	(890)us-gaap_AmortizationOfBelowMarketLease
Amortization of deferred financing costs	584us-gaap_AmortizationOfFinancingCosts
Realized and unrealized gains from marketable securities	(672)
Changes in operating assets and liabilities:
Real estate fund investments	(22)
Accounts and other receivables	(5,171)
Deferred charges	(5,545)
Other assets	(19,657)
Accounts and other payables	(8,928)
Deferred income taxes	322
Other liabilities	1,792
Net cash used in operating activities	(664)
CASH FLOWS FROM INVESTING ACTIVITIES:
Acquisitions of, and additions to, rental properties	(21,636)
Change in restricted cash	1,309
Distributions of capital from partially owned entities	1
Net cash used in investing activities	(20,326)
CASH FLOWS FROM FINANCING ACTIVITIES:
Dividends paid to common shareholders and unitholders	(35,325)us-gaap_PaymentsOfDividends
Contributions from noncontrolling interests	2,430
Distributions to noncontrolling interests	(3,488)
Repayment of borrowings	(337)us-gaap_RepaymentsOfLongTermDebt
Net cash (used in) provided by financing activities	(36,720)
Net decrease in cash and cash equivalents	(57,710)
Cash and cash equivalents at beginning of period	438,599
Cash and cash equivalents at end of period	380,889
SUPPLEMENTAL DISCLOSURE OF CASH FLOW INFORMATION:
Cash payments for interest	37,186us-gaap_InterestPaidNet
Cash payments for income taxes	32us-gaap_IncomeTaxesPaid
NON-CASH TRANSACTIONS:
Adjustment to carry noncontrolling interests in the operating partnership at redemption value	43,409
(Purchases) sale of marketable securities	(555)
Predecessor [Member]
CASH FLOWS FROM OPERATING ACTIVITIES
Net (loss) income		36,705
Adjustments to reconcile net (loss) income to net cash used in operating activities:
Depreciation and amortization		2,667
Unrealized gains on interest rate swaps		(158)
Straight-lining of rental income		45
Other non-cash adjustments		1,096
Realized and unrealized gains, net on real estate fund investments		(46,167)
Income from partially owned entities		(1,132)
Distributions of income from partially owned entities		167
Amortization of deferred financing costs		108
Realized and unrealized gains from marketable securities		(584)
Changes in operating assets and liabilities:
Real estate fund investments		(157,687)
Accounts and other receivables		(1,055)
Other assets		(3,983)
Accounts and other payables		(1,562)
Profit sharing payables		4,794
Deferred income taxes		6,396
Other liabilities		1,801
Net cash used in operating activities		(158,549)
CASH FLOWS FROM INVESTING ACTIVITIES:
Acquisitions of, and additions to, rental properties		(65,079)
Change in restricted cash		(2)
Distributions of capital from partially owned entities		84
Net cash used in investing activities		(64,997)
CASH FLOWS FROM FINANCING ACTIVITIES:
Dividends paid to common shareholders and unitholders		(22,671)
Contributions from noncontrolling interests		77,929
Contributions from Predecessor shareholders		399
Proceeds from loans payable to noncontrolling interests		39,075
Offering costs		(2,799)
Net cash (used in) provided by financing activities		91,933
Net decrease in cash and cash equivalents		(131,613)
Cash and cash equivalents at beginning of period		307,161
Cash and cash equivalents at end of period		175,548
SUPPLEMENTAL DISCLOSURE OF CASH FLOW INFORMATION:
Cash payments for interest		4,753
Cash payments for income taxes		1,183
NON-CASH TRANSACTIONS:
(Purchases) sale of marketable securities		$ 6,354

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Realized and unrealized gains net.

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