CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (USD $) In Thousands, except Share data, unless otherwise specified	Total	Common Stock	Additional Paid-in Capital	Accumulated Earnings	Treasury Stock	Accumulated Other Comprehensive Income (Loss)
Balance at Sep. 30, 2010	$ 265,849	$ 12	$ 229,197	$ 102,677		$ (66,037)
Balance (in shares) at Sep. 30, 2010		12,144,079
Increase (Decrease) in Stockholders' Equity
Net income	31,128			31,128
Dividends paid ($0.88, $0.88 and $0.80 per share for the year ended September 30, 2013, 2012 and 2011, respectively)	(9,758)			(9,758)
Other comprehensive income (loss)	(17,011)					(17,011)
Exercise of stock options	872		872
Exercise of stock options (in shares)		28,400
Tax impact of forfeited vested options	(10)		(10)
Tax impact of dividends on restricted stock	31		31
Issue restricted stock (less forfeitures) (in shares)		31,700
Stock compensation	1,752		1,752
Balance at Sep. 30, 2011	272,853	12	231,842	124,047		(83,048)
Balance (in shares) at Sep. 30, 2011		12,204,179
Increase (Decrease) in Stockholders' Equity
Net income	50,182			50,182
Dividends paid ($0.88, $0.88 and $0.80 per share for the year ended September 30, 2013, 2012 and 2011, respectively)	(10,803)			(10,803)
Other comprehensive income (loss)	(16,043)					(16,043)
Exercise of stock options	2,782		2,782
Exercise of stock options (in shares)		77,611
Tax impact of dividends on restricted stock	48		48
Issue restricted stock (less forfeitures) (in shares)		6,000
Stock compensation	2,079		2,079
Balance at Sep. 30, 2012	301,098	12	236,751	163,426		(99,091)
Balance (in shares) at Sep. 30, 2012		12,287,790
Increase (Decrease) in Stockholders' Equity
Net income	21,577			21,577
Dividends paid ($0.88, $0.88 and $0.80 per share for the year ended September 30, 2013, 2012 and 2011, respectively)	(10,849)			(10,849)
Other comprehensive income (loss)	42,292					42,292
Exercise of stock options	1,092		1,092
Exercise of stock options (in shares)		30,545
Tax impact of forfeited vested options	(185)		(185)
Tax impact of dividends on restricted stock	29		29
Issue restricted stock (less forfeitures) (in shares)		24,250
Purchase of treasury stock	(505)				(505)
Purchase of treasury stock (in shares)		(9,993)
Stock compensation	1,254		1,254
Balance at Sep. 30, 2013	$ 355,803	$ 12	$ 238,941	$ 174,154	$ (505)	$ (56,799)
Balance (in shares) at Sep. 30, 2013		12,332,592