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EARNINGS PER COMMON SHARE ("EPS") (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Earnings [Abstract]
Net Income	$ 8,873	$ 4,640	$ 27,214	$ 13,416
Basic EPS [Abstract]
Weighted average common shares outstanding (in shares)	8,512,043	6,942,486	8,416,724	6,555,415
Less weighted average nonvested shares	29,723	3,922	28,849	4,193
Weighted average common shares outstanding (in shares)	8,482,320	6,938,564	8,387,875	6,551,222
Earnings Per Common Share [Abstract]
Basic (in dollars per share)	$ 1.05	$ 0.67	$ 3.24	$ 2.05
Diluted EPS [Abstract]
Weighted average common shares outstanding for basic earnings per common share (in shares)	8,482,320	6,938,564	8,387,875	6,551,222
Add dilutive effect of assumed exercises of stock options, net of tax benefits (in shares)	65,696	74,060	64,324	65,228
Weighted average common and dilutive potential common shares outstanding (in shares)	8,548,016	7,012,624	8,452,199	6,616,450
Earnings Per Common Share [Abstract]
Diluted (in dollars per share)	$ 1.04	$ 0.66	$ 3.22	$ 2.03
Stock Options [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Securities excluded from computing diluted EPS (in shares)			29,199

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