Note 4 - Revenue From Contracts With Customers

3 Months Ended

Mar. 31, 2019

Notes to Financial Statements

Revenue from Contract with Customer [Text Block]

( 4 ) REVENUE FROM CONTRACTS WITH CUSTOMERS

The following tables provide additional information about our revenue from contracts with customers, including revenue by customer and product type and revenue by market. See also Note

11

for information about revenue by operating segment and geographic region.

	Three Months Ended March 31,
	2019		201 8
Net revenues by customer type:
End user	$	16,037	$	16,328
OEM/Integrator		2,025		2,543
	$	18,062	$	18,871
Net revenues by product type:
Thermal test	$	5,224	$	6,032
Induction heating		5,751		5,622
Semiconductor production test		5,284		5,339
Service/other		1,803		1,878
	$	18,062	$	18,871
Net revenues by market:
Semiconductor	$	10,111	$	10,539
Industrial		5,946		5,653
Telecommunications		593		1,279
Other non-semiconductor markets		1,412		1,400
	$	18,062	$	18,871

There was

no

change in the amount of the allowance for doubtful accounts for the

three

months ended

March 31, 2019.