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Commitments and Contingencies (Details)
1 Months Ended 12 Months Ended
Feb. 28, 2015
participant
Dec. 31, 2019
USD ($)
Dec. 31, 2018
USD ($)
a
facility
acre ft
Dec. 31, 2017
USD ($)
Apr. 07, 2017
a
Dec. 31, 2013
acre ft
Commitment and Contingencies Disclosure [Line Items]            
Contract renewal optional term     35 years      
Contractual obligation for future water payments     $ 260,078,000      
Estimated future minimum annual payments     $ 800,000      
Number of community facility districts | facility     2      
Acres of land related to land liens | a         190  
Letter of credit period     2 years      
Letter of credit renewal period     2 years      
Annual cost related to letter of credit     $ 117,000 $ 139,000    
Special taxes paid     $ 2,570,000      
Settled Litigation | Antelope Valley Groundwater Cases            
Commitment and Contingencies Disclosure [Line Items]            
Number of parties settled (more than) | participant 140          
Percent of water used within the adjudication boundary 99.00%          
Tejon-Castac Water District | Kern Water Bank Authority            
Commitment and Contingencies Disclosure [Line Items]            
Percentage of interest rate held     2.00%      
West CFD            
Commitment and Contingencies Disclosure [Line Items]            
Acres of land related to land liens | a     420      
Bond debt sold by TRPFFA     $ 28,620,000      
Additional bond debt authorized to be sold in future     0      
Additional reimbursement funds     $ 0      
East CFD            
Commitment and Contingencies Disclosure [Line Items]            
Acres of land related to land liens | a     1,931      
Bond debt sold by TRPFFA     $ 55,000,000      
Additional bond debt authorized to be sold in future     65,000,000      
Additional reimbursement funds     4,180,000      
Standby letter of credit            
Commitment and Contingencies Disclosure [Line Items]            
Letters of credit outstanding amount     4,468,000      
Annual cost related to letter of credit     $ 68,000      
DMB Pacific LLC            
Commitment and Contingencies Disclosure [Line Items]            
Contract renewal optional term     35 years      
DMB Pacific LLC | Transferable water            
Commitment and Contingencies Disclosure [Line Items]            
Long-term water assets (Volume) | acre ft     6,693     6,693
Scenario, Forecast            
Commitment and Contingencies Disclosure [Line Items]            
Amount paid for water contracts   $ 10,156,000