Research and development (Tables)

12 Months Ended

Dec. 31, 2021

Other Income and Expenses [Abstract]

Summary of Research and Development Expense

	Year Ended December 31,
	2021		2020		2019
Payroll and related expenses	$	48,901	$	39,991	$	36,559
Sales commissions	10,312		8,246		6,624
Marketing and advertising	5,274		4,098		5,322
Travel and entertainment	2,279		1,276		4,939
Rent and maintenance	2,513		2,640		2,661
Depreciation and amortization	1,872		1,877		824
Vehicle costs	466		423		448
Professional consultants	1,349		808		1,889
Recruiting expenses	1,043		330		859
Other	2,380		1,616		1,485
	$	76,389	$	61,305	$	61,610

	Year Ended December 31,
	2021		2020		2019
Payroll and related expenses	$	53,683	$	45,716	39,142
Rent and maintenance	1,851		2,117		1,721
Subcontractors and projects	3,482		2,676		2,398
Travel and entertainment	185		20		314
Vehicle costs	232		270		355
Recruiting expenses	178		127		222
Depreciation and amortization	2,100		1,813		1,135
Other	3,830		1,638		1,286
	$	65,541	$	54,377	$	46,573

	Year Ended December 31,
	2021		2020		2019
Payroll and related expenses	$	19,366	$	18,460	16,386
Professional fees	4,307		4,274		2,040
Vehicle costs	469		328		263
Rent and maintenance	1,559		2,147		2,071
Travel and entertainment	249		262		425
Refreshments, gifts and donations	525		778		645
Doubtful accounts and bad debts	676		606		266
Recruiting expenses	727		330		386
Depreciation	1,955		978		484
Issuance costs	11,835		—		—
Other	6,269		3,971		6,402
	$	47,937	$	32,134	$	29,368