Related Party - Additional Information (Details) - USD ($)	1 Months Ended	12 Months Ended
Dec. 31, 2014	Dec. 31, 2015
Related Party Transaction [Line Items]
Due to affiliates	$ 27,299,000	$ 27,299,000
Maturity Date		2017-10
Note payable, fixed bearing interest rate		0.50%
Interest Expense, Related Party		$ 136,000
Fee and other income	$ 2,805,000	24,993,000
Acquisition and transaction related costs		10,355,000
Management Agreements
Related Party Transaction [Line Items]
Fee and other income		776,000
CNBB-RDF Holdings, LP
Related Party Transaction [Line Items]
Due to affiliates		24,500,000
CNBB-RDF Holdings, LP \| Property Funds [Member]
Related Party Transaction [Line Items]
Aggregate amount received for reimbursement of costs and expenses		5,482,000
Amount received for reimbursement of costs and expenses		121,000
CNBB-RDF Holdings Otto Family
Related Party Transaction [Line Items]
Due to affiliates		$ 2,799,000
Hamburg Trust Consulting GMBH (“HTC”) [Member]
Related Party Transaction [Line Items]
Mark-up cost percentage		10.00%
Acquisition and transaction related costs		$ 349,000
Hamburg Trust Consulting GMBH (“HTC”) [Member] \| Chairman, Chief Executive Officer and President [Member]
Related Party Transaction [Line Items]
Percentage of ownership		100.00%

Debt instrument, maturity date in month and year.

No definition available.

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- Definition

Reflects the revenue, comprised of base and incentive revenue derived from the management of joint ventures, managing third-party properties, or another entity's operations. Additionally, reflects the sum of all other revenue and income recognized by the entity in the period not otherwise specified in the income statement.

+ References

No definition available.

+ Details

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Balance Type:	credit
Period Type:	duration

- Definition

Percentage of ownership interest held by management.

+ References

No definition available.

+ Details

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- Definition

Related party markup cost percentage.

+ References

No definition available.

+ Details

Name:	pgre_RelatedPartyMarkupCostPercentage
Namespace Prefix:	pgre_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Related party transaction aggregate reimbursement of costs and expenses.

+ References

No definition available.

+ Details

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Namespace Prefix:	pgre_
Data Type:	xbrli:monetaryItemType
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Period Type:	duration

- Definition

Related party transaction, reimbursement of costs and expenses.

+ References

No definition available.

+ Details

Name:	pgre_RelatedPartyTransactionReimbursementOfCostsAndExpenses
Namespace Prefix:	pgre_
Data Type:	xbrli:monetaryItemType
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Period Type:	duration

- Definition

This element represents acquisition-related costs incurred to effect a business combination which costs have been expensed during the period. Such costs include finder's fees; advisory, legal, accounting, valuation, and other professional or consulting fees; general administrative costs, including the costs of maintaining an internal acquisitions department; and may include costs of registering and issuing debt and equity securities.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 25
-Paragraph 23
-URI http://asc.fasb.org/extlink&oid=34752592&loc=d3e1043-128460

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Amount of interest expense incurred on a debt or other obligation to related party.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

The amount for notes payable (written promise to pay), due to related parties.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03.17)
-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08.(k)(1))
-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 850
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39549-107864

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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Data Type:	xbrli:stringItemType
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- Definition

Identify the stated interest rate per the agreement, for example, leasing and debt arrangements between related parties.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
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Period Type:	duration

- Details

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- Details

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