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Income Taxes (Details) - USD ($)
3 Months Ended 6 Months Ended
Mar. 31, 2019
Mar. 25, 2018
Mar. 31, 2019
Mar. 25, 2018
Sep. 30, 2018
Deferred Income Tax Expense (Benefit)     $ 190,000 $ (19,557,000)  
Income tax expense (benefit) $ 156,000 $ 927,000 4,670,000 (18,763,000)  
Income (Loss) from Continuing Operations before Income Taxes, Domestic $ (2,171,000) $ 3,460,000 $ 13,062,000 $ 19,097,000  
Effective Income Tax Rate Reconciliation, Percent (7.20%) 26.80% 35.80% (98.30%)  
Operating Loss Carryforwards         $ 63,048,000