XML 32 R21.htm IDEA: XBRL DOCUMENT
v3.20.2

Leases (Tables) | 9 Months Ended
--- | ---
Sep. 30, 2020
Leases |
Schedule of maturity of lease payments | The following table presents information about the amount, timing and uncertainty of cash flows arising from the Company’s operating leases as of September 30, 2020.
Maturity of Lease Payments |  | September 30, 2020
(in thousands) |  |  |
‑2020 (remaining) |  | $ | 1,216
‑2021 |  |  | 2,039
‑2022 |  |  | 1,106
‑2023 |  |  | 955
-Thereafter |  |  | 3,860
Total undiscounted operating lease payments |  |  | 9,176
Less imputed interest |  |  | (2,383)
Present value of operating lease liabilities |  | $ | 6,793
Schedule of balance sheet classification of lease liabilities |
Current lease liabilities (recorded in Accrued expenses and other current liabilities) |  | $ | 2,458
Long-term lease liabilities |  |  | 4,335
Total operating lease liabilities |  | $ | 6,793
Schedule of other information of operating leases |
Weighted-average remaining term for operating leases |  | 5.15 | years
Weighted-average discount rate for operating leases |  | 8.77 | %

X
- Definition Tabular disclosure of Schedule of Operating Lease in balance Sheet Classification. + References No definition available. + Details
Name: | hdsn_ScheduleOfOperatingLeaseInBalanceSheetClassificationTableTextBlock
Namespace Prefix: | hdsn_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of Schedule of Operating Lease Other Information + References No definition available. + Details
Name: | hdsn_ScheduleOfOperatingLeaseOtherInformationTableTextBlock
Namespace Prefix: | hdsn_
Data Type: | nonnum: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 -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=121609121&loc=SL77918701-209980 + Details
Name: | us-gaap_LesseeOperatingLeaseLiabilityMaturityTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration