Quarterly report pursuant to Section 13 or 15(d)

Commitments and Contingencies - Operating Obligations (Details)

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Commitments and Contingencies - Operating Obligations (Details)
$ in Thousands
 9 Months Ended
Sep. 30, 2019
USD ($)
a
Sep. 30, 2018
a
Loss Contingencies [Line Items]    
Area of real estate property (in acres) | a 81,586 67,826
Salinas, CA    
Loss Contingencies [Line Items]    
Area of real estate property (in acres) | a 324  
Total commitment $ 100  
Amount expended or accrued as of September 30, 2019 $ 0  
Ventura, CA    
Loss Contingencies [Line Items]    
Area of real estate property (in acres) | a 413  
Total commitment $ 1,000  
Amount expended or accrued as of September 30, 2019 $ 100  
Santa Barbara, CA    
Loss Contingencies [Line Items]    
Area of real estate property (in acres) | a 361  
Total commitment $ 4,000  
Amount expended or accrued as of September 30, 2019 $ 1,725  
Madera, CA    
Loss Contingencies [Line Items]    
Area of real estate property (in acres) | a 928  
Total commitment $ 500  
Amount expended or accrued as of September 30, 2019 $ 176  
Columbia, OR    
Loss Contingencies [Line Items]    
Area of real estate property (in acres) | a 200  
Total commitment $ 1,800  
Amount expended or accrued as of September 30, 2019 $ 1,023  
Hillsborough, FL    
Loss Contingencies [Line Items]    
Area of real estate property (in acres) | a 55  
Total commitment $ 2,250  
Amount expended or accrued as of September 30, 2019 $ 0  
Collier & Hendry, FL    
Loss Contingencies [Line Items]    
Area of real estate property (in acres) | a 5,630  
Total commitment $ 2,000  
Amount expended or accrued as of September 30, 2019 $ 0