CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Revenues, net:
Total revenues, net	$ 100,544	$ 85,093	$ 200,981	$ 165,378
Costs of sales:
Total cost of sales	80,014	63,972	157,258	123,644
Gross margin	20,530	21,121	43,723	41,734
Operating expenses:
Selling, general and administrative	25,630	26,398	53,108	48,766
Research and development	14,888	10,101	29,203	20,942
Amortization of identifiable intangible assets	465	721	929	934
Adjustment to contingent consideration liability	(2,300)	0	(7,500)	0
Gain on insurance proceeds	(500)	0	(500)	0
Total operating expenses	38,183	37,220	75,240	70,642
Operating loss	(17,653)	(16,099)	(31,517)	(28,908)
Other income (expense), net	95	(257)	36	(625)
Interest expense, net	(1,735)	(2,451)	(3,402)	(4,914)
Loss before provision for income taxes	(19,293)	(18,807)	(34,883)	(34,447)
Provision for income taxes	(409)	(41)	(724)	(51)
Net loss	$ (19,702)	$ (18,848)	$ (35,607)	$ (34,498)
Net loss per share, basic (in dollars per share)	$ (0.72)	$ (0.70)	$ (1.30)	$ (1.27)
Net loss per share, diluted (in dollars per share)	$ (0.72)	$ (0.70)	$ (1.30)	$ (1.27)
Weighted average shares outstanding, basic (in shares)	27,357	26,982	27,381	27,070
Weighted average shares outstanding, diluted (in shares)	27,357	26,982	27,381	27,070
Hardware
Revenues, net:
Total revenues, net	$ 26,390	$ 28,390	$ 53,167	$ 53,477
Costs of sales:
Total cost of sales	21,326	24,211	43,707	44,208
Subscription service
Revenues, net:
Total revenues, net	30,372	23,150	58,337	44,421
Costs of sales:
Total cost of sales	17,233	10,661	31,158	21,277
Professional service
Revenues, net:
Total revenues, net	12,767	12,631	26,609	25,119
Costs of sales:
Total cost of sales	11,784	10,503	23,150	19,683
Contract
Revenues, net:
Total revenues, net	31,015	20,922	62,868	42,361
Costs of sales:
Total cost of sales	$ 29,671	$ 18,597	$ 59,243	$ 38,476