Revenue (Tables)

12 Months Ended

Dec. 31, 2021

Revenue [Abstract]

Disaggregation of Revenue

The disaggregation of revenue is based on geographical region. The following table presents revenue from contracts with customers for the years ended December 31, 2021 and 2020 (dollars in thousands):

	Year ended December 31, 2021						Year ended December 31, 2020
	United States		International		Total		United States		International		Total
Accessory and parts revenue	$	7,770	$	302	$	8,072	$	1,121	$	88	$	1,209
Product		2,766		350		3,116		2,179		88		2,267
License fees and other		135		60		195		-		152		152
Topic 606 Revenue	$	10,671	$	712	$	11,383	$	3,300	$	328	$	3,628
Rental income		1,627		-		1,627		429		-		429
Topic 842 Revenue	$	1,627	$	-	$	1,627	$	429	$	-	$	429
Total Revenue	$	12,298	$	712	$	13,010	$	3,729	$	328	$	4,057

Contract Liabilities

As of December 31, 2021 and 2020, the Company has contract liabilities from contracts with customers as follows (dollars in thousands):

	December 31, 2021			December 31, 2020
Service agreements	$	137		$	69
Deposit on future equipment purchases		204			-
Total contract liabilities		341			69
Less: current portion		(48	)		(32	)
Non-current contract liabilities	$	293		$	37

The following table summarizes the changes in contract liabilities during the year ended December 31, 2021 and 2020 (dollars in thousands):

	Year ended December 31, 2021			Year ended December 31, 2020
Beginning balance	$	69		$	128
New service agreement additions		100			2
Deposit on future equipment purchases		204			-
Revenue recognized		(32	)		(61	)
Total contract liabilities		341			69
Less current portion		(48	)		(32	)
Non-current contract liabilities	$	293		$	37