Subsequent events (Details) - Subsequent Event [Member] - Sienna Credit Facility [Member]	Jul. 19, 2022 USD ($)
Subsequent events [Abstract]
Minimum excess availability and unrestricted cash required	$ 5,000,000
Number of days to maintain excess availability and unrestricted cash	3 days
Minimum principal amount to be maintained to direct use of funds in deposit account	$ 2,250,000
Minimum principal amount on which interest is paid	$ 2,250,000