Earnings (loss) per common share - Additional Information (Details)		6 Months Ended
May 06, 2022	Jun. 30, 2022
Earnings Per Share [Abstract]
Reverse stock split, conversion ratio	0.02	0.02
Reverse stock split, description	outstanding shares of our common stock were split at a ratio of 50-for-1	50-for-1 reverse stock split

Description of the reverse stock split arrangement. Also provide the retroactive effect given by the reverse split that occurs after the balance sheet date but before the release of financial statements.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section S99
-Paragraph 4
-Subparagraph (SAB Topic 4.C)
-URI https://asc.fasb.org/extlink&oid=120397183&loc=d3e187143-122770

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