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Inventories (Tables)
9 Months Ended
Apr. 30, 2020
Inventory Disclosure [Abstract]  
Schedule of Major Classifications of Inventories
Major classifications of inventories are as follows:
   April 30, 2020July 31, 2019
Finished goods – RV$219,892  $230,483  
Finished goods – other60,943  60,593  
Work in process 124,072  126,636  
Raw materials309,136  300,721  
Chassis 200,148  155,099  
Subtotal
914,191  873,532  
Excess of FIFO costs over LIFO costs (46,544) (45,544) 
Total inventories, net$867,647  $827,988