Organization and Basis of Presentation - Subsequent Event (Details) $ in Millions	Feb. 24, 2020 USD ($)
315 West 33rd Street \| Subsequent Event
Subsequent Event [Line Items]
Gross asset valuation of property to be sold	$ 446.5

Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event.

No definition available.

Name:	us-gaap_SubsequentEventLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration