Collaborative Agreement (Details) - USD ($) $ in Thousands		6 Months Ended
Aug. 31, 2018	Aug. 31, 2018	Mar. 01, 2018
Equity Method Investments and Joint Ventures [Abstract]
Ownership percentage			25.00%
Outside partner interest of the operating partnership			75.00%
Proceeds from sale	$ 142,500
Reimbursement percent		75.00%

The cash inflow associated with the amount received from the sale of a portion of the company's business, for example a segment, division, branch or other business, during the period.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 12
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3179-108585

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