CONDENSED CONSOLIDATED STATEMENT OF SHAREHOLDERS' EQUITY - 9 months ended Jun. 30, 2016 - USD ($) $ in Thousands	Total	Common Stock [Member]	CAPITAL INEXCESS OFPAR VALUE [Member]	RETAINED EARNINGS [Member]	TREASURY SHARES [Member]	ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) [Member]	DEFERRED COMPENSATION [Member]
Stock Repurchased During Period, Shares	2,714,076,000
Balance at Sep. 30, 2015	$ 430,525	$ 19,770	$ 518,485	$ 454,548	$ (436,559)	$ (91,188)	$ (34,531)
Balance (in Shares) at Sep. 30, 2015		79,080,000			30,737,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	22,287			22,287
Dividend	(6,686)			(6,686)
Tax effect from exercise/vesting of equity awards, net	2,291		2,291
Amortization of deferred compensation	2,102						2,102
Common stock acquired	(50,771)				$ (50,771)
Common stock acquired (in Shares)					3,202,000
Equity awards granted, net	0	$ 244	(244)
Stock grants and equity awards, net (in Shares)		977,000
ESOP allocation of common stock	936		936
Stock-based compensation	8,432		8,432
Other comprehensive income, net of tax	10,911					10,911
Balance at Jun. 30, 2016	$ 420,027	$ 20,014	$ 529,900	$ 470,149	$ (487,330)	$ (80,277)	$ (32,429)
Balance (in Shares) at Jun. 30, 2016		80,057,000			33,939,000