Quarterly report pursuant to Section 13 or 15(d)

Basis of Presentation - Narrative (Details)

v3.19.1
Basis of Presentation - Narrative (Details)
a in Thousands, $ in Thousands
3 Months Ended 6 Months Ended
Oct. 01, 2018
USD ($)
Mar. 31, 2019
USD ($)
a
classification
Mar. 31, 2018
USD ($)
Mar. 31, 2019
USD ($)
a
classification
segment
Mar. 31, 2018
USD ($)
Sep. 30, 2018
USD ($)
Property, Plant and Equipment [Line Items]            
Number of business segments | segment       2    
Accounts receivable, net   $ 13,997   $ 13,997   $ 2,544
Citree            
Property, Plant and Equipment [Line Items]            
Net loss attributable to noncontrolling interest   $ 177 $ 33 $ 251 $ 49  
Land            
Property, Plant and Equipment [Line Items]            
Area of land owned (in acres) | a   117   117    
Number of primary classifications | classification   2   2    
Mineral Rights            
Property, Plant and Equipment [Line Items]            
Area of land owned (in acres) | a   90   90    
Citree            
Property, Plant and Equipment [Line Items]            
Ownership interest (as a percent)   51.00%   51.00%    
Citrus            
Property, Plant and Equipment [Line Items]            
Accounts receivable, net   $ 13,696   $ 13,696   $ 2,471
Discontinued Operations, Disposed of by Sale | ASC 610-20            
Property, Plant and Equipment [Line Items]            
Net adjustment to retained earnings $ 14,601