Revenue from Contracts with Customers (Tables)

6 Months Ended

Jun. 30, 2021

Revenue from Contract with Customer [Abstract]

Schedule of disaggregation of revenue

Revenue disaggregated by revenue source is as follows (in thousands):

	Three months ended June 30,				Six months ended June 30,
	2021		2020		2021		2020
Revenue:
Products	$	8,444	$	8,176	$	19,524	$	26,976
Services	721		704		1,411		1,320
	$	9,165	$	8,880	$	20,935	$	28,296