REVENUE (Tables)

12 Months Ended

May 31, 2022

REVENUE

Disaggregation of revenue

The Company’s revenues by product category are as follows (in thousands):

	Year Ended May 31,
	2022		2021		2020
Type of good / service:
Systems	$	25,224	$	7,250	$	8,099
Contactors		22,647		5,837		10,784
Services		2,958		3,513		3,408
	$	50,829	$	16,600	$	22,291
Product lines:
Wafer-level	$	48,926	$	15,004	$	19,768
Test During Burn-In		1,903		1,596		2,523
	$	50,829	$	16,600	$	22,291

The following presents information about the Company’s operations in different geographic areas. Net sales are based upon ship-to location (in thousands):

	Year Ended May 31,
	2022		2021		2020
Geographic region:
United States	$	5,110	$	5,386	$	13,544
Asia		45,700		11,074		7,556
Europe		19		140		1,191
	$	50,829	$	16,600	$	22,291

With the exception of the amount of service contracts and extended warranties, the Company’s product category revenues are recognized at point in time when control transfers to customers. The following presents revenue based on timing of recognition (in thousands):

	Year Ended May 31,
	2022		2021		2020
Timing of revenue recognition (in thousands):
Products and services transferred at a point in time	$	49,441	$	15,009	$	19,948
Services transferred over time		1,388		1,591		2,343
	$	50,829	$	16,600	$	22,291