Collective Bargaining Agreements - Additional Information (Details)	Dec. 31, 2025 collective_bargaining_unit
Retirement Benefits [Abstract]
Number of collective bargaining units	5
Number of collective bargaining agreements	2

Multiemployer Plans, Collective-Bargaining Arrangement, Number Of Units, Additional Separate Arrangements

No definition available.

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Namespace Prefix:	hrbr_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant