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Property, plant and equipment

9 Months Ended

Sep. 30, 2025

Property, plant and equipment

Property, plant and equipment

Note 4 - Property, plant and equipment

Elements of property, plant and equipment are as follows:

​

​	​	​	​	​	​	​	​	​
​		September 30,			December 31,			Estimated
​	​	2025		​	2024		​	Lives
(in thousands)	​	(unaudited)		​	​	​	​	​
Property, plant and equipment	​	​	​	​	​	​	​	​
- Land	​	$	1,255	​	$	1,255	​	​
- Land improvements	​		319	​		319		6-10 years
- Buildings	​		1,446	​		1,446		25-39 years
- Building improvements	​		3,624	​		3,569		25-39 years
- Cylinders	​		12,878	​		12,957		15-30 years
- Equipment	​		33,790	​		32,525		3-10 years
- Equipment under capital lease	​		315	​		315		5-7 years
- Vehicles	​		2,213	​		2,081		3-5 years
- Lab and computer equipment, software	​		3,304	​		3,304		2-8 years
- Furniture and fixtures	​		1,125	​		1,125		5-10 years
- Leasehold improvements	​		865	​		865		3-5 years
- Construction-in-progress	​		6,079	​		4,237
Subtotal	​		67,213	​		63,998
Less: Accumulated depreciation	​		(44,432)	​		(42,444)		​
Total	​	$	22,781	​	$	21,554

​

Depreciation expense for the nine-month periods ended September 30, 2025 and 2024 was $2.1 million and $2.3 million, respectively, of which $1.6 million respectively, were included as cost of sales in the Company’s Consolidated Statements of Income.

X

- References

No definition available.

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X

- Definition

The entire disclosure for long-lived, physical asset used in normal conduct of business and not intended for resale. Includes, but is not limited to, work of art, historical treasure, and similar asset classified as collections.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 360
-Name Accounting Standards Codification
-Publisher FASB
-URI https://asc.fasb.org/360/tableOfContent

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Name Accounting Standards Codification
-Section 50
-Paragraph 6
-SubTopic 360
-Topic 958
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477798/958-360-50-6

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (d)
-SubTopic 360
-Topic 958
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477798/958-360-50-1

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Name Accounting Standards Codification
-Section 50
-Paragraph 7
-SubTopic 360
-Topic 958
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477798/958-360-50-7

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