Subsequent Events - Summary of Key Information of Property (Parenthetical) (Details)	Sep. 30, 2019 ft²
West Henrietta Property Acquisition \| Maximum
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Potential expansion of property net leasable square feet	7,300

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.

No definition available.

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