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Inventories (Tables)
12 Months Ended
Aug. 31, 2017
Inventories [Abstract]  
Inventories
4. Inventories
Inventories consist of the following (in thousands):
August 31, 2017August 31, 2016
Raw materials$1,574,241$1,302,481
Work in process822,628675,867
Finished goods591,227510,485
Reserve for inventory obsolescence(46,013)(32,221)
Inventories, net$2,942,083$2,456,612