Cost of revenues

12 Months Ended

Dec. 31, 2021

Cost of revenues [Abstract]

Cost of revenues

Note 15. Cost of revenues

	Year Ended December 31,
	2021		2020		2019
Materials and changes in inventories	$	10,316	$	10,532	$	7,638
Payroll and related expenses		19,754		17,019		14,272
Training expenses		3,885		2,713		5,338
Shipping expenses		1,548		1,543		1,784
Depreciation and Amortization		1,080		1,327		1,501
Inventory write-off		230		150		262
Travel		1,410		866		1,561
Other		4,334		3,729		3,467
	$	42,557	$	37,879	$	35,823

Cost of revenues by revenue type

	Year Ended December 31,
	2021		2020		2019
Cost of revenues from subscription services	$	9,369	$	8,795	$	6,585
Cost of term-license		2,299		1,709		189
Cost of revenues from perpetual license and other		9,817		9,370		10,049
Cost of revenues from professional services		21,072		18,005		19,000
	$	42,557	$	37,879	$	35,823