Income Taxes (Tables)

6 Months Ended

Mar. 31, 2020

Income Taxes [Abstract]

Tax Expense and Effective Tax Rate

	Three-Months Ended				Six-Months Ended
	March 31,				March 31,
	2020		2019		2020		2019
Earnings before income taxes	$	107,199	$	90,168	$	168,747	$	151,683
Income tax expense		15,881		12,589		24,056		24,984
Effective tax rate		14.8%		14.0%		14.3%		16.5%