Note 6 - Revenue From Contracts with Customers

3 Months Ended

Mar. 31, 2018

Notes to Financial Statements

Revenue from Contract with Customer [Text Block]

( 6 )    REVENUE FROM CONTRACTS WITH CUSTOMERS

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

three

months ended

March 31, 2018

are as follows:

Balance - January 1, 2018	$	213
Bad debt recovery		(39	)
Write-offs		(22	)
Balance - March 31, 2018	$	152

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

12

for information about revenue by operating segment and geographic region.

	Three Months Ended March 31,
	2018		2017
Net revenues by customer type:
End user	$	16,328	$	12,486
OEM/Integrator		2,543		1,694
	$	18,871	$	14,180
Net revenues by product type:
Thermal test	$	6,032	$	6,822
Induction heating		5,622		-
Semiconductor production test		5,339		6,162
Service/other		1,878		1,196
	$	18,871	$	14,180
Net revenues by market :
Semiconductor	$	10,539	$	10,439
Industrial		5,653		120
Telecommunications		1,279		2,695
Other non-semiconductor markets		1,400		926
	$	18,871	$	14,180