Advisory agreement cost of assets maximum.

No definition available.

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- Definition

Property management fees as a percentage of gross revenue.

+ References

No definition available.

+ Details

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Namespace Prefix:	nyrt_
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Period Type:	duration

- Definition

Related party transaction asset management fees earned above threshold.

+ References

No definition available.

+ Details

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Period Type:	instant

- Definition

Related party transaction asset management fees earned above threshold advisory agreement cost of assets maximum.

+ References

No definition available.

+ Details

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- Definition

Related party transaction asset management fees earned by related party percentage of benchmark.

+ References

No definition available.

+ Details

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- Definition

Related party transaction hurdle amount.

+ References

No definition available.

+ Details

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- Definition

Related party transaction incentive fee excess of hurdle amount percentage.

+ References

No definition available.

+ Details

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Namespace Prefix:	nyrt_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Related party transaction oversight fees earned by related party percentage of benchmark.

+ References

No definition available.

+ Details

Name:	nyrt_RelatedPartyTransactionOversightFeesEarnedByRelatedPartyPercentageOfBenchmark
Namespace Prefix:	nyrt_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Related party transaction property management fees earned by related party percentage of benchmark.

+ References

No definition available.

+ Details

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Namespace Prefix:	nyrt_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Related party transaction real estate commission earned by related party percentage of benchmark.

+ References

No definition available.

+ Details

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Namespace Prefix:	nyrt_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Expenses recognized resulting from transactions (excluding transactions that are eliminated in consolidated or combined financial statements) with related party.

+ References

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

+ Details

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

- 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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Period Type:	duration

- Details

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Namespace Prefix:
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- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_RelatedPartyTransactionAxis=nyrt_AdvisoryAndConsultingFeeMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
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- Details

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- Details

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- Details

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- Details

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- Details

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- Details

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Related Party Transactions and Arrangements - Additional Information (Detail) - USD ($)			1 Months Ended	3 Months Ended
	Feb. 01, 2017	Jan. 03, 2017	Mar. 31, 2017	Mar. 31, 2016	Mar. 07, 2017	Mar. 01, 2017
Advisor [Member]
Related Party Transaction [Line Items]
Asset management fees as a percentage of benchmark					0.50%
Cost of assets maximum					$ 3,000,000,000
Advisor [Member] \| Property Disposition Fees [Member]
Related Party Transaction [Line Items]
Fees paid to related parties				$ 200,000
Advisor [Member] \| Advisory and Consulting Fee [Member]
Related Party Transaction [Line Items]
Fees paid to related parties	$ 500,000	$ 500,000
Service Provider and Affiliates [Member]
Related Party Transaction [Line Items]
Asset management fees as a percentage of benchmark						0.325%
Cost of assets maximum						$ 3,000,000,000
Asset management fees earned above						0.25%
Incentive fee, percentage of excess of hurdle amount			10.00%
Hurdle amount (in dollars per share)			$ 11.00
Property management fees as a percentage of gross revenue			1.75%
Average Invested Assets [Member] \| Advisor [Member]
Related Party Transaction [Line Items]
Cost of assets maximum					$ 3,000,000,000
Asset management fees earned above					0.40%
Gross Revenue, Multi-tenant Properties [Member] \| Advisor [Member]
Related Party Transaction [Line Items]
Property management fees as a percentage of benchmark					4.00%
Gross Revenue, Multi-tenant Properties [Member] \| Advisor [Member] \| Maximum [Member]
Related Party Transaction [Line Items]
Oversight fees as a percentage of benchmark					1.00%
Contract Sales Price [Member] \| Advisor [Member]
Related Party Transaction [Line Items]
Real estate commission earned by related party				2.00%
Contract Sales Price [Member] \| Advisor [Member] \| Brokerage Commission Fees [Member]
Related Party Transaction [Line Items]
Real estate commission earned by related party				50.00%
Contract Sales Price [Member] \| Advisor [Member] \| Real Estate Commissions [Member]
Related Party Transaction [Line Items]
Real estate commission earned by related party				6.00%