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Commitments and Contingencies (Details)
gal / d in Thousands, a in Thousands
1 Months Ended 2 Months Ended
Aug. 17, 2023
reservoir
Jun. 16, 2023
gal / d
Oct. 11, 2019
license
Jan. 07, 2019
gal / d
Apr. 10, 2015
plaintiff
May 31, 2016
Jan. 31, 2019
Sep. 30, 2023
USD ($)
Dec. 31, 2018
a
license
East Maui Irrigation Company, LLC (EMI)                  
Loss Contingencies [Line Items]                  
Interest held in EMI             50.00%    
East Maui Irrigation Company, LLC (EMI) | Maui                  
Loss Contingencies [Line Items]                  
Area of land sold (in acres) | a                 41
East Maui Irrigation Company, LLC (EMI) | East Maui                  
Loss Contingencies [Line Items]                  
Watershed lands owned (in acres) | a                 16
State of Hawai'i | East Maui                  
Loss Contingencies [Line Items]                  
Number of water licenses held and extended as revocable permits | license                 4
Additional watershed lands accessible by licenses (in acres) | a                 30
Financial Guarantee                  
Loss Contingencies [Line Items]                  
Guarantor obligations, current carrying value               $ 0  
Bid, Performance and Payment Bonds and Commercial Bonds                  
Loss Contingencies [Line Items]                  
Possible administrative penalty               18,700,000  
Estimated remaining exposure               139,100,000  
Performance Bond                  
Loss Contingencies [Line Items]                  
Possible administrative penalty               357,400,000  
Long Term Water Lease Request                  
Loss Contingencies [Line Items]                  
Number of water licenses held and extended as revocable permits | license     4            
Number of parties filed lawsuit | plaintiff         3        
Duration of revocable permits for disposition of water rights     1 year     3 years      
Sierra Club Lawsuit Against BLNR, A&B, and EMI                  
Loss Contingencies [Line Items]                  
Number of gallons per day diverted (in gallons) | gal / d   31,500   25,000          
Number of reservoirs to be lined | reservoir 1                
Letters of Credit                  
Loss Contingencies [Line Items]                  
Standby letters of credit outstanding               $ 1,100,000