Accumulated other comprehensive loss (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Accumulated other comprehensive loss
Current period accumulated other comprehensive loss	$ (1,447)	$ 395	$ (2,644)	$ (856)
Cumulative translation adjustment
Accumulated other comprehensive loss
Beginning balance			441	2,434
Current period accumulated other comprehensive loss			(2,644)	(856)
Ending Balance	(2,203)	1,578	(2,203)	1,578
Accumulated other comprehensive income (loss)
Accumulated other comprehensive loss
Beginning balance			441	2,434
Current period accumulated other comprehensive loss	(1,447)	395	(2,644)	(856)
Ending Balance	$ (2,203)	$ 1,578	$ (2,203)	$ 1,578