Stockholders' equity - ATM common stock offering program and Forward Equity Sales Agreements (Details) shares in Thousands, $ in Millions	3 Months Ended
Mar. 31, 2023 USD ($) shares
All Forward Equity Sales Agreements Outstanding
Class of Stock
Common stock available for future issuance (in shares) \| shares	699
Expected net proceeds from issuance of common stock	$ 102.5
ATM Common Stock Offering Program, Established December 2021
Class of Stock
Common stock available for future issuance (in dollars)	$ 141.9

Aggregate number of common shares reserved for future issuance.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.29)
-URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

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Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant