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Contingencies (Details) - USD ($)
Aug. 01, 2017
Apr. 19, 2017
Oct. 21, 2016
Commitments and Contingencies Disclosure [Abstract]      
Insurance deductible     $ 250,000
Penalty issued by OSHA   $ 138,000  
Payments for legal settlements   $ 75,000  
Civil penalties $ 250,000