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Long-Term Debt - Schedule of Long-term Debt (Details) - USD ($)
Sep. 30, 2018
Sep. 30, 2017
Oct. 05, 2016
Debt Instrument [Line Items]      
Total debt $ 142,415,000 $ 124,949,000 $ 9,900,000
Less unamortized debt issuance costs (1,788,000) (597,000)  
Less current portion (19,047,000) (17,440,000)  
Total long-term debt 121,580,000 106,912,000  
Notes payable One [Member]      
Debt Instrument [Line Items]      
Total debt [1] 2,358,000  
Notes Payable Two [Member]      
Debt Instrument [Line Items]      
Total debt [1] 95,000  
Notes Payable Three [Member]      
Debt Instrument [Line Items]      
Total debt [1] 1,071,000 1,157,000  
Notes Payable Four [Member]      
Debt Instrument [Line Items]      
Total debt [1] 4,510,000  
Notes Payable Five [Member]      
Debt Instrument [Line Items]      
Total debt [1] 1,120,000  
Notes Payable Six [Member]      
Debt Instrument [Line Items]      
Total debt [2] 6,941,000  
Notes Payable Seven [Member]      
Debt Instrument [Line Items]      
Total debt [1] 6,423,000  
Notes Payable Eight [Member]      
Debt Instrument [Line Items]      
Total debt [1] 1,679,000  
Notes Payable Nine [Member]      
Debt Instrument [Line Items]      
Total debt 2,740,000  
Notes Payable Ten [Member]      
Debt Instrument [Line Items]      
Total debt 4,470,000 5,613,000  
Notes Payable Eleven [Member]      
Debt Instrument [Line Items]      
Total debt [1] 4,484,000  
Notes Payable Twelve [Member]      
Debt Instrument [Line Items]      
Total debt [1] 504,000  
Notes Payable Thirteen [Member]      
Debt Instrument [Line Items]      
Total debt [1] 5,320,000  
Notes Payable Fourteen [Member]      
Debt Instrument [Line Items]      
Total debt [1] 1,037,000  
Notes Payable Fifteen [Member]      
Debt Instrument [Line Items]      
Total debt [1] 1,777,000  
Notes Payable Sixteen [Member]      
Debt Instrument [Line Items]      
Total debt [1] 10,258,000 10,620,000  
Notes Payable Seventeen [Member]      
Debt Instrument [Line Items]      
Total debt [1] 4,303,000  
Notes Payable Eighteen [Member]      
Debt Instrument [Line Items]      
Total debt [1] 9,672,000  
Notes Payable Nineteen [Member]      
Debt Instrument [Line Items]      
Total debt [1] 4,651,000  
Notes Payable Twenty [Member]      
Debt Instrument [Line Items]      
Total debt [1] 1,894,000  
Notes Payable Twenty One [Member]      
Debt Instrument [Line Items]      
Total debt [1] 7,544,000 8,267,000  
Notes Payable Twenty Two [Member]      
Debt Instrument [Line Items]      
Total debt [2] 6,219,000 9,671,000  
Notes Payable Twenty Three [Member]      
Debt Instrument [Line Items]      
Total debt 912,000 941,000  
Notes Payable Twenty Four [Member]      
Debt Instrument [Line Items]      
Total debt [2] 2,940,000 5,440,000  
Notes Payable Twenty Five [Member]      
Debt Instrument [Line Items]      
Total debt [2] 3,025,000 5,000,000  
Notes Payable Twenty Six [Member]      
Debt Instrument [Line Items]      
Total debt [2] 14,464,000 15,291,000  
Notes Payable Twenty Seven [Member]      
Debt Instrument [Line Items]      
Total debt [1] 3,441,000  
Notes Payable Twenty Eight [Member]      
Debt Instrument [Line Items]      
Total debt [1] 58,826,000  
Notes Payable Twenty Nine [Member]      
Debt Instrument [Line Items]      
Total debt 6,877,000  
Notes Payable Thirty [Member]      
Debt Instrument [Line Items]      
Total debt [1] 4,257,000  
Notes Payable Thirty One [Member]      
Debt Instrument [Line Items]      
Total debt [1] 3,079,000  
Notes Payable Thirty Two [Member]      
Debt Instrument [Line Items]      
Total debt [1] 960,000  
Notes Payable Thirty Three [Member]      
Debt Instrument [Line Items]      
Total debt [1] 945,000  
Notes Payable Thirty Four [Member]      
Debt Instrument [Line Items]      
Total debt [1] 3,168,000  
Notes Payable Thirty Five [Member]      
Debt Instrument [Line Items]      
Total debt [2] 4,000,000  
Notes Payable Thirty Six [Member]      
Debt Instrument [Line Items]      
Total debt [1] 1,350,000  
Notes Payable Thirty Seven [Member]      
Debt Instrument [Line Items]      
Total debt [1] 1,500,000  
Notes Payable Thirty Eight [Member]      
Debt Instrument [Line Items]      
Total debt [1] 1,550,000  
Notes Payable Thirty Nine [Member]      
Debt Instrument [Line Items]      
Total debt [2] $ 5,000,000  
[1] Collateralized by real estate.
[2] Collateralized by stock in subsidiary.