Annual report pursuant to Section 13 and 15(d)

Restatement of Quarterly Financial Information - Operations (Details)

Restatement of Quarterly Financial Information - Operations (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	1 Months Ended	3 Months Ended								6 Months Ended		9 Months Ended		12 Months Ended
	Jun. 30, 2021	Mar. 31, 2022	Dec. 31, 2021	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2021	Dec. 31, 2020	Mar. 31, 2022	Mar. 31, 2021
Revenue:
Total revenue		$ 16,049	$ 17,808	$ 17,640	$ 12,467	$ 18,135	$ 16,697	$ 13,710	$ 19,065	$ 30,107	$ 32,775	$ 47,915	$ 49,472	$ 63,964	$ 67,607
Cost of goods sold:
Total cost of goods sold		16,234	15,733	14,498	11,858	21,025	14,480	12,609	15,008	26,356	27,617	42,089	42,097	58,323	63,122
Gross profit		(185)	2,075	3,142	609	(2,890)	2,217	1,101	4,057	3,751	5,158	5,826	7,375	5,641	4,485
Operating expenses:
Research and development		722	767	987	883	714	734	599	370	1,870	969	2,637	1,703	3,359	2,417
Selling, general and administrative		5,187	5,293	6,438	5,324	5,157	4,816	4,872	3,546	11,762	8,418	17,055	13,234	22,242	18,391
Total operating expenses		5,909	6,060	7,425	6,207	5,871	5,550	5,471	3,916	13,632	9,387	19,692	14,937	25,601	20,808
Loss from operations		(6,094)	(3,985)	(4,283)	(5,598)	(8,761)	(3,333)	(4,370)	141	(9,881)	(4,229)	(13,866)	(7,562)	(19,960)	(16,323)
Other income		3	(21)	(5)	665	4,989	(11)	11	4	660	15	639	4	642	4,993
Interest income		5	5	6	5	7	7	8	8	11	16	16	23	21	30
Interest expense		(1,204)	(1,287)	(1,278)	(1,235)	(1,321)	(1,231)	(1,313)	(1,291)	(2,513)	(2,604)	(3,800)	(3,835)	(5,004)	(5,156)
Gain (loss) on debt extinguishment	$ 1,900				1,950		(4,282)			1,950		1,950	(4,282)	1,950	(4,282)
Loss before provision for income taxes		(7,290)	(5,288)	(5,560)	(4,213)	(5,086)	(8,850)	(5,664)	(1,138)	(9,773)	(6,802)	(15,061)	(15,652)	(22,351)	(20,738)
Provision for income taxes		9		2	8	9		9	1	10	10	10	10	19	19
Net loss		(7,299)	(5,288)	(5,562)	(4,221)	(5,095)	(8,850)	(5,673)	(1,139)	(9,783)	(6,812)	(15,071)	(15,662)	(22,370)	(20,757)
Less: Deemed dividend on purchase warrant for common shares								15			15		15		15
Net loss attributable to common stockholders		$ (7,299)	$ (5,288)	$ (5,562)	$ (4,221)	$ (5,095)	$ (8,850)	$ (5,688)	$ (1,139)	$ (9,783)	$ (6,827)	$ (15,071)	$ (15,677)	$ (22,370)	$ (20,772)
Net loss per common share attributable to common stockholders-basic (in dollars per share)		$ (0.48)	$ (0.35)	$ (0.37)	$ (0.32)	$ (0.41)	$ (0.80)	$ (0.52)	$ (0.11)	$ (0.69)	$ (0.63)	$ (1.04)	$ (1.43)	$ (1.52)	$ (1.84)
Net loss per common share attributable to common stockholders-diluted (in dollars per share)		$ (0.48)	$ (0.35)	$ (0.37)	$ (0.32)	$ (0.41)	$ (0.80)	$ (0.52)	$ (0.11)	$ (0.69)	$ (0.63)	$ (1.04)	$ (1.43)	$ (1.52)	$ (1.84)
Weighted average shares used to calculate basic net loss per common share attributable to common stockholders (in shares)		15,273	15,236	15,167	13,226	12,335	11,081	11,040	10,598	14,202	10,862	14,548	10,935	14,727	11,280
Weighted average shares used to calculate diluted net loss per common share attributable to common stockholders (in shares)		15,273	15,236	15,167	13,226	12,335	11,081	11,040	10,598	14,202	10,862	14,548	10,935	14,727	11,280
Bill and Hold
Revenue:
Total revenue		$ 409	$ (2,648)	$ 565	$ (3,494)	$ 416	$ (3,840)	$ (983)	$ 5,111	$ (2,929)	$ 4,128	$ (5,577)	$ 288	$ (5,168)	$ 704
Cost of goods sold:
Total cost of goods sold		74	(2,166)	672	(2,359)	552	(3,110)	(754)	3,480	(1,687)	2,726	(3,853)	(384)	(3,779)	168
Gross profit		335	(482)	(107)	(1,135)	(136)	(730)	(229)	1,631	(1,242)	1,402	(1,724)	672	(1,389)	536
Operating expenses:
Selling, general and administrative		(738)												(738)
Total operating expenses		(738)												(738)
Loss from operations		1,073	(482)	(107)	(1,135)	(136)	(730)	(229)	1,631	(1,242)	1,402	(1,724)	672	(651)	536
Loss before provision for income taxes		1,073	(482)	(107)	(1,135)	(136)	(730)	(229)	1,631	(1,242)	1,402	(1,724)	672	(651)	536
Net loss		1,073	(482)	(107)	(1,135)	(136)	(730)	(229)	1,631	(1,242)	1,402	(1,724)	672	(651)	536
Net loss attributable to common stockholders		$ 1,073	$ (482)	$ (107)	$ (1,135)	$ (136)	$ (730)	$ (229)	$ 1,631	$ (1,242)	$ 1,402	$ (1,724)	$ 672	$ (651)	$ 536
Net loss per common share attributable to common stockholders-basic (in dollars per share)		$ 0.07	$ (0.03)	$ (0.01)	$ (0.09)	$ (0.01)	$ (0.07)	$ (0.02)	$ 0.15	$ (0.09)	$ 0.13	$ (0.12)	$ 0.06	$ (0.04)	$ 0.05
Net loss per common share attributable to common stockholders-diluted (in dollars per share)		$ 0.07	$ (0.03)	$ (0.01)	$ (0.09)	$ (0.01)	$ (0.07)	$ (0.02)	$ 0.15	$ (0.09)	$ 0.13	$ (0.12)	$ 0.06	$ (0.04)	$ (0.05)
Weighted average shares used to calculate basic net loss per common share attributable to common stockholders (in shares)		15,273	15,236	15,167	13,226	12,335	11,081	11,040	10,598	14,202	10,862	14,548	10,935	14,727	11,280
Weighted average shares used to calculate diluted net loss per common share attributable to common stockholders (in shares)		15,273	15,236	15,167	13,226	12,335		11,040	10,598	14,202	10,862	14,548	10,935	14,727	11,280
FPP Contracts
Revenue:
Total revenue		$ (118)	$ (153)	$ (121)	$ (121)	$ (143)	$ (138)	$ (213)	$ (239)	$ (242)	$ (452)	$ (395)	$ (590)	$ (513)	$ (733)
Cost of goods sold:
Total cost of goods sold		1,365	(493)	(660)	783	59	387	1,019	708	123	1,727	(370)	2,114	995	2,173
Gross profit		(1,483)	340	539	(904)	(202)	(525)	(1,232)	(947)	(365)	(2,179)	(25)	(2,704)	(1,508)	(2,906)
Operating expenses:
Loss from operations		(1,483)	340	539	(904)	(202)	(525)	(1,232)	(947)	(365)	(2,179)	(25)	(2,704)	(1,508)	(2,906)
Loss before provision for income taxes		(1,483)	340	539	(904)	(202)	(525)	(1,232)	(947)	(365)	(2,179)	(25)	(2,704)	(1,508)	(2,906)
Net loss		(1,483)	340	539	(904)	(202)	(525)	(1,232)	(947)	(365)	(2,179)	(25)	(2,704)	(1,508)	(2,906)
Net loss attributable to common stockholders		$ (1,483)	$ 340	$ 539	$ (904)	$ (202)	$ (525)	$ (1,232)	$ (947)	$ (365)	$ (2,179)	$ (25)	$ (2,704)	$ (1,508)	$ (2,906)
Net loss per common share attributable to common stockholders-basic (in dollars per share)		$ (0.10)	$ 0.02	$ 0.04	$ (0.07)	$ (0.02)	$ (0.05)	$ (0.11)	$ (0.09)	$ (0.03)	$ (0.20)	$ 0.00	$ (0.25)	$ (0.10)	$ (0.26)
Net loss per common share attributable to common stockholders-diluted (in dollars per share)		$ (0.10)	$ 0.02	$ 0.04	$ (0.07)	$ (0.02)	$ (0.05)	$ (0.11)	$ (0.09)	$ (0.03)	$ (0.20)	$ 0.00	$ (0.25)	$ (0.10)	$ (0.26)
Weighted average shares used to calculate basic net loss per common share attributable to common stockholders (in shares)		15,273	15,236	15,167	13,226	12,335	11,081	11,040	10,598	14,202	10,862	14,548	10,935	14,727	11,280
Weighted average shares used to calculate diluted net loss per common share attributable to common stockholders (in shares)		15,273	15,236	15,167	13,226	12,335	11,081	11,040	10,598	14,202	10,862	14,548	10,935	14,727	11,280
Previously Reported
Revenue:
Total revenue		$ 15,758	$ 20,609	$ 17,196	$ 16,082	$ 17,862	$ 20,675	$ 14,906	$ 14,193	$ 33,278	$ 29,099	$ 53,887	$ 49,774	$ 69,645	$ 67,636
Cost of goods sold:
Total cost of goods sold		14,795	18,392	14,486	13,434	20,414	17,203	12,344	10,820	27,920	23,164	46,312	40,367	61,107	60,781
Gross profit		963	2,217	2,710	2,648	(2,552)	3,472	2,562	3,373	5,358	5,935	7,575	9,407	8,538	6,855
Operating expenses:
Research and development		722	767	987	883	714	734	599	370	1,870	969	2,637	1,703	3,359	2,417
Selling, general and administrative		5,925	5,293	6,438	5,324	5,157	4,816	4,872	3,546	11,762	8,418	17,055	13,234	22,980	18,391
Total operating expenses		6,647	6,060	7,425	6,207	5,871	5,550	5,471	3,916	13,632	9,387	19,692	14,937	26,339	20,808
Loss from operations		(5,684)	(3,843)	(4,715)	(3,559)	(8,423)	(2,078)	(2,909)	(543)	(8,274)	(3,452)	(12,117)	(5,530)	(17,801)	(13,953)
Other income		3	(21)	(5)	665	4,989	(11)	11	4	660	15	639	4	642	4,993
Interest income		5	5	6	5	7	7	8	8	11	16	16	23	21	30
Interest expense		(1,204)	(1,287)	(1,278)	(1,235)	(1,321)	(1,231)	(1,313)	(1,291)	(2,513)	(2,604)	(3,800)	(3,835)	(5,004)	(5,156)
Gain (loss) on debt extinguishment					1,950		(4,282)			1,950		1,950	(4,282)	1,950	(4,282)
Loss before provision for income taxes		(6,880)	(5,146)	(5,992)	(2,174)	(4,748)	(7,595)	(4,203)	(1,822)	(8,166)	(6,025)	(13,312)	(13,620)	(20,192)	(18,368)
Provision for income taxes		9		2	8	9		9	1	10	10	10	10	19	19
Net loss		(6,889)	(5,146)	(5,994)	(2,182)	(4,757)	(7,595)	(4,212)	(1,823)	(8,176)	(6,035)	(13,322)	(13,630)	(20,211)	(18,387)
Less: Deemed dividend on purchase warrant for common shares								15			15		15		15
Net loss attributable to common stockholders		$ (6,889)	$ (5,146)	$ (5,994)	$ (2,182)	$ (4,757)	$ (7,595)	$ (4,227)	$ (1,823)	$ (8,176)	$ (6,050)	$ (13,322)	$ (13,645)	$ (20,211)	$ (18,402)
Net loss per common share attributable to common stockholders-basic (in dollars per share)		$ (0.45)	$ (0.34)	$ (0.40)	$ (0.16)	$ (0.39)	$ (0.69)	$ (0.38)	$ (0.17)	$ (0.58)	$ (0.56)	$ (0.92)	$ (1.25)	$ (1.37)	$ (1.63)
Net loss per common share attributable to common stockholders-diluted (in dollars per share)		$ (0.45)	$ (0.34)	$ (0.40)	$ (0.16)	$ (0.39)	$ (0.69)	$ (0.38)	$ (0.17)	$ (0.58)	$ (0.56)	$ (0.92)	$ (1.25)	$ (1.37)	$ (1.63)
Weighted average shares used to calculate basic net loss per common share attributable to common stockholders (in shares)		15,273	15,236	15,167	13,226	12,335	11,081	11,040	10,598	14,202	10,862	14,548	10,935	14,727	11,280
Weighted average shares used to calculate diluted net loss per common share attributable to common stockholders (in shares)		15,273	15,236	15,167	13,226	12,335	11,081	11,040	10,598	14,202	10,862	14,548	10,935	14,727	11,280
Reclassifications
Operating expenses:
Weighted average shares used to calculate basic net loss per common share attributable to common stockholders (in shares)						12,335	11,081	11,040	10,598		10,862		10,935
Weighted average shares used to calculate diluted net loss per common share attributable to common stockholders (in shares)						12,335	11,081	11,040	10,598		10,862		10,935
Product, Accessories and Parts \| Previously Reported
Revenue:
Total revenue							$ 15,374	$ 9,344	$ 8,936		$ 18,280		$ 33,654
Cost of goods sold:
Total cost of goods sold							13,483	8,693	7,995		16,688		30,171
Product, Accessories and Parts \| Reclassifications
Revenue:
Total revenue							(15,374)	(9,344)	(8,936)		(18,280)		(33,654)
Cost of goods sold:
Total cost of goods sold							(13,483)	(8,693)	(7,995)		(16,688)		(30,171)
Product and accessories
Revenue:
Total revenue		$ 8,236	$ 9,901	$ 9,344	$ 5,239	$ 10,495	8,848	6,099	11,209	$ 14,583	17,308	$ 24,484	26,156	$ 32,720	$ 36,651
Cost of goods sold:
Total cost of goods sold		10,030	10,659	9,599	6,818	16,155	9,183	6,531	10,118	16,417	16,649	27,076	25,832	37,106	41,987
Product and accessories \| Bill and Hold
Revenue:
Total revenue		238	(2,428)	879	(3,150)	550	(3,912)	(1,107)	4,603	(2,271)	3,496	(4,699)	(416)	(4,461)	134
Cost of goods sold:
Total cost of goods sold		26	(2,030)	801	(2,174)	601	(3,141)	(816)	3,318	(1,373)	2,502	(3,403)	(639)	(3,377)	(38)
Product and accessories \| Previously Reported
Revenue:
Total revenue		7,998	12,329	8,465	8,389	9,945				16,854		29,183		37,181	36,517
Cost of goods sold:
Total cost of goods sold		10,004	12,689	8,798	8,992	15,554				17,790		30,479		40,483	42,025
Product and accessories \| Reclassifications
Revenue:
Total revenue							12,760	7,206	6,606		13,812		26,572
Cost of goods sold:
Total cost of goods sold							12,324	7,347	6,800		14,147		26,471
Service
Revenue:
Total revenue		7,813	7,907	8,296	7,228					15,524		23,431		31,244	30,956
Cost of goods sold:
Total cost of goods sold		6,204	5,074	4,899	5,040					9,939		15,013		21,217	21,135
Service \| Bill and Hold
Revenue:
Total revenue		171	(220)	(314)	(344)					(658)		(878)		(707)	570
Cost of goods sold:
Total cost of goods sold		48	(136)	(129)	(185)					(314)		(450)		(402)	206
Service \| FPP Contracts
Revenue:
Total revenue		(118)	(153)	(121)	(121)					(242)		(395)		(513)	(733)
Cost of goods sold:
Total cost of goods sold		1,365	(493)	(660)	783					123		(370)		995	2,173
Service \| Previously Reported
Revenue:
Total revenue		7,760	8,280	8,731	7,693		5,301	5,562	5,257	16,424	10,819	24,704	16,120	32,464	31,119
Cost of goods sold:
Total cost of goods sold		$ 4,791	$ 5,703	$ 5,688	$ 4,442		3,720	3,651	2,825	$ 10,130	6,476	$ 15,833	10,196	$ 20,624	$ 18,756
Service \| Reclassifications
Revenue:
Total revenue							(5,301)	(5,562)	(5,257)		(10,819)		(16,120)
Cost of goods sold:
Total cost of goods sold							(3,720)	(3,651)	(2,825)		(6,476)		(10,196)
Parts and Service
Revenue:
Total revenue						7,640	7,849	7,611	7,856		15,467		23,316
Cost of goods sold:
Total cost of goods sold						4,870	5,297	6,078	4,890		10,968		16,265
Parts and Service \| Bill and Hold
Revenue:
Total revenue						(134)	72	124	508		632		704
Cost of goods sold:
Total cost of goods sold						(49)	31	62	162		224		255
Parts and Service \| FPP Contracts
Revenue:
Total revenue						(143)	(138)	(213)	(239)		(452)		(590)
Cost of goods sold:
Total cost of goods sold						59	387	1,019	708		1,727		2,114
Parts and Service \| Previously Reported
Revenue:
Total revenue						7,917
Cost of goods sold:
Total cost of goods sold						$ 4,860
Parts and Service \| Reclassifications
Revenue:
Total revenue							7,915	7,700	7,587		15,287		23,202
Cost of goods sold:
Total cost of goods sold							$ 4,879	$ 4,997	$ 4,020		$ 9,017		$ 13,896