Consolidated Statements Of Changes In Shareholders' Equity (USD $) In Thousands, except Share data, unless otherwise specified	Common Stock [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive [Member]	Total
Balance at Sep. 30, 2008	$ 125,992	$ 53,823	$ (35,745)	$ 144,070
Balance, shares at Sep. 30, 2008	11,964,927
Comprehensive Income (Loss):
Net Income (Loss)		(23,183)		(23,183)
Change in Derivative Fair Value			(3,262)	(3,262)
Reclassification from Accumulated Other Comprehensive Income to Net Income			4,757	4,757
Foreign Currency Translation Adjustment			(96)	(96)
Change in Pension and Other Postretirement Benefits Liability			(35,796)	(35,796)
Total Comprehensive Income (Loss)				(57,580)
Adjustments to Apply Measurement Date Change for Pension and Other Postretirement Benefits (Net of Tax of $126)		(629)	233	(396)
Dividends		(2,089)		(2,089)
Restricted Stock Grants, Net	2,429			2,429
Restricted Stock Grants, Net, shares	61,427
Balance at Sep. 30, 2009	128,421	27,922	(69,909)	86,434
Balance, shares at Sep. 30, 2009	12,026,354
Comprehensive Income (Loss):
Net Income (Loss)		136,860		136,860
Change in Derivative Fair Value			(1,233)	(1,233)
Reclassification from Accumulated Other Comprehensive Income to Net Income			967	967
Foreign Currency Translation Adjustment			160	160
Change in Pension and Other Postretirement Benefits Liability			(5,255)	(5,255)
Total Comprehensive Income (Loss)				131,499
Dividends		(948)		(948)
Restricted Stock Grants, Net	1,747			1,747
Restricted Stock Grants, Net, shares	118,744
Balance at Sep. 30, 2010	130,168	163,834	(75,270)	218,732
Balance, shares at Sep. 30, 2010	12,145,098			12,145,098
Comprehensive Income (Loss):
Net Income (Loss)		(53,393)		(53,393)
Change in Derivative Fair Value			19,335	19,335
Reclassification from Accumulated Other Comprehensive Income to Net Income			(8,855)	(8,855)
Foreign Currency Translation Adjustment			(72)	(72)
Change in Pension and Other Postretirement Benefits Liability			(14,719)	(14,719)
Total Comprehensive Income (Loss)				(57,704)
Dividends		(978)		(978)
Restricted Stock Grants, Net	1,404			1,404
Restricted Stock Grants, Net, shares	78,880
Balance at Sep. 30, 2011	$ 131,572	$ 109,463	$ (79,581)	$ 161,454
Balance, shares at Sep. 30, 2011	12,223,978			12,223,978