CONDENSED CONSOLIDATED STATEMENT OF CHANGES IN SHAREHOLDERS’ EQUITY (UNAUDITED) - 3 months ended Dec. 31, 2016 - USD ($) shares in Thousands, $ in Thousands	Total	Common Stock	Paid-in Capital	Retained Earnings	Accumulated Other Comprehensive Income (Loss)
Beginning Balance (in shares) at Sep. 30, 2016		64,799
September 30, 2016 at Sep. 30, 2016	$ 3,230,386	$ 64,799	$ 237,542	$ 2,929,839	$ (1,794)
Increase (Decrease) in Stockholders' Equity
Net income	9,671
Other comprehensive income	1,184
Vesting of restricted stock and performance unit awards (in shares)		143
Vesting of restricted stock and performance unit awards	(460)	$ 143	(603)
Stock compensation expense (in shares)		0
Stock compensation expense		$ 0
Stock compensation expense	3,655		3,655
Ending Balance (in shares) at Dec. 31, 2016		64,942
December 31, 2016 at Dec. 31, 2016	$ 3,244,436	$ 64,942	241,558	2,938,546	$ (610)
Increase (Decrease) in Stockholders' Equity
Cumulative effect of accounting change (Note 1)			$ 964	$ (964)