Earnings per Share (Tables)

12 Months Ended

Sep. 30, 2020

Earnings Per Share [Abstract]

Schedule of basic and diluted earnings per share

The following information was used in the computation of basic and diluted earnings per share for the fiscal years ended September 30, 2020, 2019 and 2018.

	Fiscal Years Ended September 30,
	2020		2019		2018
	(dollars in thousands, except per share data)
Net income	$	(680,808)	$	167,365	$	157,916
Weighted average common shares outstanding	55,612,251		57,154,865		58,938,169
Dilutive effect of stock based compensation	—		102,196		193,481
Weighted average common shares outstanding for diluted earnings per share calculation	55,612,251		57,257,061		59,131,650
Basic earnings per share	$	(12.24)	$	2.93	$	2.68
Diluted earnings per share	$	(12.24)	$	2.92	$	2.67