CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS' EQUITY (USD $) In Thousands, unless otherwise specified	Preferred Stock [Member]	Common Stock [Member]	Additional Paid-in Capital [Member]	Treasury Stock [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Total
Balance at Sep. 30, 2009	$ 1	$ 208	$ 185,249	$ (103,563)	$ 265,821	$ 3,933	$ 351,649
Balance (in Shares) at Sep. 30, 2009	65	15,897
Net income (loss)					(36,789)		(36,789)
Other comprehensive income (loss), net of tax						917	917
Common stock issued pursuant to public offering, net of issuance costs of $584			9,166				9,166
Common stock issued pursuant to public offering, net of issuance costs of $584 (in Shares)		629
Stock based compsensation expense			(219)				(219)
Stock options exercised		7	12				19
Stock options exercised (in Shares)		1
Excess stock option tax benefit			3				3
Accretion of preferred stock			556		(556)		0
Cash dividends
Common stock					(3,304)		(3,304)
Preferred stock					(3,252)		(3,252)
Balance at Sep. 30, 2010	1	215	194,767	(103,563)	221,920	4,850	318,190
Balance (in Shares) at Sep. 30, 2010	65	16,527
Net income (loss)					(41,186)		(41,186)
Other comprehensive income (loss), net of tax						(2,374)	(2,374)
Stock based compsensation expense			432				432
Accretion of preferred stock			591		(591)		0
Cash dividends
Common stock					(3,306)		(3,306)
Preferred stock					(3,250)		(3,250)
Balance at Sep. 30, 2011	1	215	195,790	(103,563)	173,587	2,476	268,506
Balance (in Shares) at Sep. 30, 2011	65	16,527
Net income (loss)					15,572		15,572
Other comprehensive income (loss), net of tax						(5,320)	(5,320)
Stock based compsensation expense			59				59
Accretion of preferred stock			153		(153)		0
Cash dividends
Common stock					(826)		(826)
Preferred stock					(813)		(813)
Balance at Dec. 31, 2011	1	215	196,002	(103,563)	187,367	(2,844)	277,178
Balance (in Shares) at Dec. 31, 2011	65	16,527
Net income (loss)					28,813		28,813
Other comprehensive income (loss), net of tax						160	160
Stock based compsensation expense			180				180
Accretion of preferred stock			637		(637)		0
True-up preferred stock dividend payable					(134)		(134)
Cash dividends
Common stock					(3,306)		(3,306)
Preferred stock					(3,250)		(3,250)
Balance at Dec. 31, 2012	$ 1	$ 215	$ 196,819	$ (103,563)	$ 208,853	$ (2,684)	$ 299,641
Balance (in Shares) at Dec. 31, 2012	65	16,527