Revenue (Tables)

9 Months Ended

Sep. 30, 2019

Revenue from Contract with Customer [Abstract]

Schedule of sales by end market

The following tables represent a disaggregation of revenue from contracts with customers for the periods presented (in thousands):    

Sales by End Market

	Three Months Ended September 30,		Nine Months Ended September 30,
	2019		2019
Industrial	$	18,977	$	58,021
Microfabrication	13,280		45,907
Aerospace and Defense	11,557		29,795
	$	43,814	$	133,723

Schedule of sales by geography

Sales by Geography

	Three Months Ended September 30,		Nine Months Ended September 30,
	2019		2019
North America	$	16,382	$	50,294
China	17,397		49,251
Rest of World	10,035		34,178
	$	43,814	$	133,723