XML 36 R25.htm IDEA: XBRL DOCUMENT v3.25.3

Leases (Tables)

9 Months Ended

Sep. 30, 2025

Leases

Schedule of maturity of lease payments

​

​	​	​	​
​	​	September 30,
Maturity of Lease Payments		2025
(in thousands)	​	(unaudited)
2025 (remaining)	​	$	740
-2026	​		2,346
-2027	​	​	1,865
-2028	​	​	652
-2029	​	​	547
-Thereafter	​		276
Total undiscounted operating lease payments	​		6,426
Less imputed interest	​		(888)
Present value of operating lease liabilities	​	$	5,538

Schedule of balance sheet classification of lease liabilities

​

​	​	​	​	​	​	​
​	​	September 30,		​	December 31,
​		2025			2024
(in thousands)	​	(unaudited)		​	​
Current lease liabilities (recorded in Accrued expenses and other current liabilities)	​	$	2,050	​	$	1,961
Long-term lease liabilities	​		3,488	​		4,917
Total operating lease liabilities	​	$	5,538	​	$	6,878

Schedule of other information of operating leases

​

​	​	​	​	​	​
​	​	September 30,	​	December 31,	​
​		2025		2024	​
Weighted-average remaining term for operating leases	​	2.35	years	2.87	years
Weighted-average discount rate for operating leases		8.46	%	8.45	%

Schedule of supplemental cash flow and non-cash information related to leases

​

​	​	​	​	​	​	​
​		September 30,			December 31,
​	​	2025		​	2024
(in thousands)	​	(unaudited)		​	​	​
Cash paid for amounts included in measurement of lease liabilities:	​		​	​	​
Operating cash flow from operating leases		$	1,470	​	$	1,918
Right-of-use assets obtained in exchange for new operating lease liabilities		$	130	​	$	2,113

​

X

- Definition

Tabular disclosure of operating lease in balance sheet classification.

+ References

No definition available.

+ Details

Name:	hdsn_ScheduleOfOperatingLeaseInBalanceSheetClassificationTableTextBlock
Namespace Prefix:	hdsn_
Data Type:	dtr-types:textBlockItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Tabular disclosure of operating lease other information.

+ References

No definition available.

+ Details

Name:	hdsn_ScheduleOfOperatingLeaseOtherInformationTableTextBlock
Namespace Prefix:	hdsn_
Data Type:	dtr-types:textBlockItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Tabular disclosure of Supplemental cash flow and non-cash information related to leases.

+ References

No definition available.

+ Details

Name:	hdsn_ScheduleOfSupplementalCashFlowAndNonCashInformationRelatedToLeasesTableTextBlock
Namespace Prefix:	hdsn_
Data Type:	dtr-types:textBlockItemType
Balance Type:	na
Period Type:	duration

X

- References

No definition available.

+ Details

Name:	us-gaap_LeasesAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Tabular disclosure of undiscounted cash flows of lessee's operating lease liability. Includes, but is not limited to, reconciliation of undiscounted cash flows to operating lease liability recognized in statement of financial position.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 842
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 6
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478964/842-20-50-6

+ Details

Name:	us-gaap_LesseeOperatingLeaseLiabilityMaturityTableTextBlock
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:textBlockItemType
Balance Type:	na
Period Type:	duration