Subsequent events (Details) - Subsequent Event - Revolving Credit Facility - New Credit Agreement	1 Months Ended
Dec. 15, 2021 $ / shares shares
Subsequent Event [Line Items]
Number of shares sold \| shares	19,346
Price per share (in dollars per share) \| $ / shares	$ 2.19

Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event.

No definition available.

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