Quarterly report pursuant to Section 13 or 15(d)

Property and Equipment, Net - Narrative (Details)

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Property and Equipment, Net - Narrative (Details)
3 Months Ended 6 Months Ended
Mar. 31, 2017
USD ($)
Mar. 31, 2016
USD ($)
Mar. 31, 2017
USD ($)
Mar. 31, 2016
USD ($)
Feb. 02, 2017
USD ($)
a
Property, Plant and Equipment [Line Items]          
Gain on sale of real estate $ 1,396,000 $ 760,000 $ 1,832,000 $ 902,000  
Hendry County, Florida          
Property, Plant and Equipment [Line Items]          
Area of land used (in acres) | a         49
Proceeds from sale of land         $ 2,200,000
Gain on sale of real estate 1,400,000   1,400,000    
Fort Myers Property, Florida          
Property, Plant and Equipment [Line Items]          
Proceeds from sale of land $ 6,000,000   $ 6,000,000