CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Revenues, net:
Total revenues, net	$ 107,134	$ 92,767	$ 308,115	$ 258,145
Costs of sales:
Total cost of sales	78,948	71,359	236,206	195,003
Gross margin	28,186	21,408	71,909	63,142
Operating expenses:
Selling, general and administrative	26,249	26,543	79,357	75,309
Research and development	14,660	12,843	43,863	33,785
Amortization of identifiable intangible assets	464	465	1,393	1,399
Adjustment to contingent consideration liability	0	0	(7,500)	0
Gain on insurance proceeds	0	0	(500)	0
Total operating expenses	41,373	39,851	116,613	110,493
Operating loss	(13,187)	(18,443)	(44,704)	(47,351)
Other expense, net	(373)	(179)	(337)	(804)
Interest expense, net	(1,750)	(2,140)	(5,152)	(7,054)
Loss before provision for income taxes	(15,310)	(20,762)	(50,193)	(55,209)
Provision for income taxes	(206)	(578)	(930)	(629)
Net loss	$ (15,516)	$ (21,340)	$ (51,123)	$ (55,838)
Net loss per share, basic (in dollars per share)	$ (0.56)	$ (0.79)	$ (1.86)	$ (2.06)
Net loss per share, diluted (in dollars per share)	$ (0.56)	$ (0.79)	$ (1.86)	$ (2.06)
Weighted average shares outstanding, basic (in shares)	27,472	27,110	27,412	27,150
Weighted average shares outstanding, diluted (in shares)	27,472	27,110	27,412	27,150
Hardware
Revenues, net:
Total revenues, net	$ 25,824	$ 31,343	$ 78,991	$ 84,820
Costs of sales:
Total cost of sales	19,295	25,458	63,002	69,666
Subscription service
Revenues, net:
Total revenues, net	31,363	25,170	89,700	69,591
Costs of sales:
Total cost of sales	15,497	13,054	46,655	34,332
Professional service
Revenues, net:
Total revenues, net	11,514	11,840	38,123	36,959
Costs of sales:
Total cost of sales	8,775	10,967	31,925	30,649
Contract
Revenues, net:
Total revenues, net	38,433	24,414	101,301	66,775
Costs of sales:
Total cost of sales	$ 35,381	$ 21,880	$ 94,624	$ 60,356