Summary of Significant Accounting Policies (Details 2) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2012
Accounting Policies [Abstract]
Foreign currency translation adjustment, net of income tax benefit of $0, $0 and $200, respectively	$ (5,851)	$ (5,851)	$ (5,566)
Net retirement plan liability adjustment, net of income tax benefit of ($2,909), ($2,409) and ($4,090), respectively	(4,757)	(3,866)	(6,720)
Interest rate swap agreement, net of income tax benefit of $1, $16 and $35, respectively	(5)	(26)	(58)
Total accumulated other comprehensive loss	(10,613)	(9,743)	(12,344)
Foreign currency translation adjustment, income tax benefit	0	0	200
Net pension liability adjustment, income tax benefit	(2,909)	(2,409)	(4,090)
Net interest rate swap agreement, income tax benefit	1	16	35
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance at beginning of period	(9,743)	(12,344)
Other comprehensive income (loss) before reclassifications	(1,158)
Amounts reclassified from accumulated other comprehensive income	288
Net current-period other comprehensive income	(870)
Balance at end of period	(10,613)	(9,743)	(12,344)
Foreign Currency Translation Adjustment [Member]
Accounting Policies [Abstract]
Total accumulated other comprehensive loss	(5,851)
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance at beginning of period	(5,851)
Other comprehensive income (loss) before reclassifications	0
Amounts reclassified from accumulated other comprehensive income	0
Net current-period other comprehensive income	0
Balance at end of period	(5,851)
Retirement Plan Liability Adjustment [Member]
Accounting Policies [Abstract]
Total accumulated other comprehensive loss	(4,757)
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance at beginning of period	(3,866)
Other comprehensive income (loss) before reclassifications	(1,179)
Amounts reclassified from accumulated other comprehensive income	288
Net current-period other comprehensive income	(891)
Balance at end of period	(4,757)
Interest Rate Swap Adjustment [Member]
Accounting Policies [Abstract]
Total accumulated other comprehensive loss	(5)
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance at beginning of period	(26)
Other comprehensive income (loss) before reclassifications	21
Amounts reclassified from accumulated other comprehensive income	0
Net current-period other comprehensive income	21
Balance at end of period	$ (5)