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Details of Certain Financial Statement Components

12 Months Ended

Dec. 31, 2021

Details of Certain Financial Statement Components

Details of Certain Financial Statement Components

Note 2 – Details of Certain Financial Statement Components

The following tables provide details of selected balance sheet items:

​

​	​	​	​	​	​	​
​	​	December 31,		​	December 31,
​		2021			2020
Inventories		(in thousands)
Raw materials		$	447		$	520
Work-in-process	​	​	209	​	​	246
Finished goods	​	​	158	​	​	100
Total inventories		$	814		$	866

​

​	​	​	​	​	​	​
​	​	December 31,		​	December 31,
​	​	2021		​	2020
Property, plant and equipment, net	​	(in thousands)
Furniture, machinery and equipment		$	1,696		$	1,662
Leasehold improvements	​		444	​		538
​	​		2,140	​		2,200
Less: accumulated depreciation	​		(1,802)	​		(1,793)
Total property, plant and equipment, net	​	$	338	​	$	407

​

Depreciation expense totaled $216 thousand and $233 thousand in 2021 and 2020, respectively.

​

​	​	​	​	​	​	​
​	​	December 31,		​	December 31,
​	​	2021		​	2020
Intangible assets, net	​	(in thousands)
Patents and trademarks		$	658		$	658
Less: accumulated amortization	​		(527)	​		(463)
Total intangibles, net	​	$	131	​	$	195

​

Amortization expense totaled $65 thousand and $60 thousand in 2021 and 2020, respectively. Future amortization on existing intangibles over the next five years is as follows:

​

​	​	​	​
Years ending December 31,		(in thousands)
2022	​	$	55
2023	​		42
2024	​		27
2025	​		7
2026	​	​	—
Thereafter	​		—
​	​	$	131

​

​	​	​	​	​	​	​
​	​	December 31,		​	December 31,
​	​	2021		​	2020
Accrued liabilities	​	(in thousands)
Accrued warranty		$	3		$	7
Accrued wages and benefits	​		402	​		180
Accrued vacation	​		82	​		110
Accrued other	​		20	​		20
Total accrued liabilities	​	$	507	​	$	343

​

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