Business Segments (Tables)

3 Months Ended

Mar. 30, 2019

Segment Reporting [Abstract]

Schedule of Revenue Information by Product

Revenue information shown by product group is as follows:

	Three Months Ended
(in thousands)	March 30, 2019		March 31, 2018
G6	$	3,106	$	2,841
Retina		5,599		4,911
Other(1)		1,890		1,757
Total revenues	$	10,595	$	9,509
(1) Incudes service contract revenues of $308 and $304 recognized during the three months ended March 30, 2019 and March 31, 2018, respectively. Other also includes revenues from paid service, royalty, freight and legacy G probes.

Revenue Information by Geographic Region

Revenue information shown by geographic region, based on the sales destination, is as follows:

	Three Months Ended
(in thousands)	March 30, 2019		March 31, 2018
United States	$	5,202	$	4,860
Europe		2,477		2,434
Rest of Americas		618		652
Asia/Pacific Rim		2,298		1,563
Total revenues	$	10,595	$	9,509