Income taxes - Provision for Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Current tax (benefit) provision
Federal	$ 544	$ (220)	$ 397
Foreign	3,715	1,672	806
State and Local	1,865	784	294
Current tax benefit	6,124	2,236	1,497
Deferred tax (benefit) provision
Federal	(5,812)	(8,467)	(14,594)
Foreign	(1,373)	102	(5)
State and local	(2,477)	(6,947)	(2,330)
Deferred tax benefit	(9,662)	(15,312)	(16,929)
Benefit from income taxes	$ (3,538)	$ (13,076)	$ (15,432)