Stockholders' Equity and Earnings per Share (Tables)

3 Months Ended

Dec. 31, 2017

Equity [Abstract]

Schedule of weighted average number of common shares outstanding

	Three months ended December 31,
(in thousands)	2017	2016
Weighted average common shares outstanding - basic	218,323	218,661
Dilutive effect of stock options, restricted stock, and restricted stock units	2,499	3,318
Weighted average common shares outstanding - diluted	220,822	221,979