v3.26.3
DEBT - Liquidity (Details)
$ in Millions
Dec. 31, 2026
USD ($)
Long-Term Debt, Unclassified [Abstract]
Liquidity
$ 103.2
X
- Definition
The amount of liquidity under the debt instrument.
+ References
No definition available.
+ Details
Name:
hnrg_TotalLiquidity
Namespace Prefix:
hnrg_
Data Type:
xbrli:monetaryItemType
Balance Type:
credit
Period Type:
instant
X
- References
No definition available.
+ Details
Name:
us-gaap_LongTermDebtAbstract
Namespace Prefix:
us-gaap_
Data Type:
xbrli:stringItemType
Balance Type:
na
Period Type:
duration