Annual report pursuant to Section 13 and 15(d)

Description of Business and Basis of Presentation - (Details)

v3.20.2
Description of Business and Basis of Presentation - (Details)
 3 Months Ended 12 Months Ended
Oct. 01, 2018
USD ($)
Sep. 30, 2020
USD ($)
a
property
Jun. 30, 2020
USD ($)
Mar. 31, 2020
USD ($)
Dec. 31, 2019
USD ($)
Sep. 30, 2019
USD ($)
Jun. 30, 2019
USD ($)
Mar. 31, 2019
USD ($)
Dec. 31, 2018
USD ($)
Sep. 30, 2020
USD ($)
a
property
segment
Sep. 30, 2019
USD ($)
Sep. 30, 2018
USD ($)
Property, Plant and Equipment [Line Items]                        
Number of business segments | segment                   2    
Net loss attributable to subsidiary   $ (42,000) $ (8,000) $ (5,000) $ 107,000 $ (232,000) $ (28,000) $ (87,000) $ (36,000) $ 52,000 $ (383,000) $ (250,000)
Net income (loss) attributable to parent   $ 17,204,000 $ 2,096,000 $ 3,571,000 $ 791,000 $ 16,509,000 $ 16,244,000 $ 7,547,000 $ (2,467,000) 23,662,000 37,833,000 13,050,000
Cumulative Effect, Period of Adoption, Adjustment [Member]                        
Property, Plant and Equipment [Line Items]                        
Net income (loss) attributable to parent $ 10,897,000                      
Citree Holdings I L L C [Member]                        
Property, Plant and Equipment [Line Items]                        
Net loss attributable to subsidiary                   107,051 781,783 511,854
Net income (loss) attributable to parent                   54,596 $ 398,709 $ 261,046
Proceeds from federal relief program                   $ 493,000,000    
Land                        
Property, Plant and Equipment [Line Items]                        
Area of land owned (in acres) | a   100,000               100,000    
Number of primary classifications | property   2               2    
Mineral Rights                        
Property, Plant and Equipment [Line Items]                        
Area of land owned (in acres) | a   90,000               90,000