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Condensed Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Statement of Comprehensive Income [Abstract]
Net income	$ 9,787	$ 8,873	$ 43,173	$ 27,214	[1]
Other comprehensive income (loss):
Change in net unrealized gain (loss) on securities	11,902	17,561	(25,398)	36,397
Losses (gains) realized in net income	(47)	102	1,331	52
Total available for sale adjustment	11,855	17,663	(24,067)	36,449
LESS: Deferred income tax effect	4,472	6,399	(8,544)	13,312
Total other comprehensive income (loss)	7,383	11,264	(15,523)	23,137
Total comprehensive income	$ 17,170	$ 20,137	$ 27,650	$ 50,351
[1] See Note 1. Basis of Presentation for further discussion on the current presentation.

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