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Stockholders' Equity and Earnings per Share (Tables)
 9 Months Ended
Jun. 30, 2020
Equity [Abstract]  
Schedule of weighted average number of common shares outstanding The following illustrates the components of diluted weighted average shares outstanding for the periods indicated:
Three months ended
June 30,		Nine months ended
June 30,
(in thousands)2020201920202019
Weighted average common shares outstanding - basic203,654  209,705  205,017  209,484  
Dilutive effect of stock options and restricted stock units
1,890  1,456  1,697  1,667  
Weighted average common shares outstanding - diluted205,544  211,161  206,714  211,151