Subsequent Events	9 Months Ended
Sep. 30, 2020
Subsequent Events [Abstract]
Subsequent Events	17. SUBSEQUENT EVENTS On October 1, 2020, the Company declared a quarterly dividend of $1.07 per common share. The dividend was paid on October 26, 2020 to shareholders of record on October 13, 2020. The total dividend paid amounted to $52.0 million. As further discussed in Note 6, the Company paid off a $100 million term note on October 9, 2020. Subsequent to September 30, 2020, the Company entered into contracts to acquire five self-storage facilities for an aggregate purchase price of $59.6 million. The purchases of these facilities are subject to customary conditions to closing, and there is no assurance that these facilities will be acquired. As discussed in Note 16, on November 5, 2020, the Company acquired a self-storage facility for a purchase price of $13.7 million.

The entire disclosure for significant events or transactions that occurred after the balance sheet date through the date the financial statements were issued or the date the financial statements were available to be issued. Examples include: the sale of a capital stock issue, purchase of a business, settlement of litigation, catastrophic loss, significant foreign exchange rate changes, loans to insiders or affiliates, and transactions not in the ordinary course of business.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 855
-URI http://asc.fasb.org/topic&trid=2122774

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 855
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=6842918&loc=SL6314017-165662

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