Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Sales:
Net sales	$ 29,267	$ 34,143
Costs and expenses:
Research and development	3,038	2,565
Sales, marketing and support	5,384	5,708
General and administrative	5,291	4,650
Total costs and expenses	33,065	34,312
Loss from operations	(3,798)	(169)
Interest income	911	778
Other expense, net	(198)	(224)
(Loss) income before income tax expense	(3,085)	385
Income tax expense	78	18
Net (loss) income	$ (3,163)	$ 367
Net (loss) income per common share
Basic (in dollars per share)	$ (0.16)	$ 0.02
Diluted (in dollars per share)	$ (0.16)	$ 0.02
Weighted average number of common shares outstanding:
Basic (in shares)	19,286	18,882
Diluted (in shares)	19,286	19,035
Service
Sales:
Net sales	$ 25,038	$ 28,740
Costs and expenses:
Cost of product and service sales	14,044	16,076
Product
Sales:
Net sales	4,229	5,403
Costs and expenses:
Cost of product and service sales	$ 5,308	$ 5,313