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Supplemental Consolidated Balance Sheet Information (Details) - USD ($)
Dec. 31, 2015
Sep. 30, 2014
Other current liabilities    
Accrued self-insurance reserves $ 1,830,000 $ 1,524,000
Income and franchise taxes payable 21,000 96,000
Other accrued expenses and current liabilities 2,753,000 2,477,000
Total other current liabilities $ 4,604,000 $ 4,097,000