Condensed Consolidated Statements of Operations - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Net revenues:
Total net revenues	$ 48,583	$ 69,167	$ 152,934	$ 192,408
Cost of net revenues:
Total cost of net revenues	46,688	51,211	113,956	141,310
Gross profit	1,895	17,956	38,978	51,098
Operating costs and expenses:
Research and development	8,951	15,417	27,127	47,597
Sales and marketing	5,355	8,295	17,975	25,789
General and administrative	4,906	5,720	16,703	20,101
Amortization of purchased intangible assets	424	433	1,277	1,319
Write-down of capitalized software	611	0	1,115	0
Total operating costs and expenses	20,247	29,865	64,197	94,806
Operating loss	(18,352)	(11,909)	(25,219)	(43,708)
Other (expense) income:
Loss on debt conversion and extinguishment, net	0	0	0	(450)
Interest expense, net	(2,891)	(2,034)	(6,902)	(6,621)
Other (expense) income, net	(578)	(1,758)	875	(3,145)
Total other expense	(3,469)	(3,792)	(6,027)	(10,216)
Loss before income taxes	(21,821)	(15,701)	(31,246)	(53,924)
Income tax (benefit) provision	(16)	42	600	(582)
Net loss	(21,805)	(15,743)	(31,846)	(53,342)
Series E preferred stock dividends	(756)	(691)	(2,218)	(2,029)
Net loss attributable to common stockholders	$ (22,561)	$ (16,434)	$ (34,064)	$ (55,371)
Net loss per common share:
Basic (in dollars per share)	$ (0.19)	$ (0.15)	$ (0.30)	$ (0.52)
Diluted (in dollars per share)	$ (0.19)	$ (0.15)	$ (0.30)	$ (0.52)
Weighted-average shares used in computation of net loss per common share:
Basic (in shares)	116,967,545	107,747,468	112,247,219	106,977,201
Diluted (in shares)	116,967,545	107,747,468	112,247,219	106,977,201
IoT & Mobile Solutions
Net revenues:
Total net revenues	$ 41,357	$ 62,633	$ 131,367	$ 172,129
Cost of net revenues:
Total cost of net revenues	43,560	48,209	105,011	131,805
Enterprise SaaS Solutions
Net revenues:
Total net revenues	7,226	6,534	21,567	20,279
Cost of net revenues:
Total cost of net revenues	$ 3,128	$ 3,002	$ 8,945	$ 9,505