Condensed Consolidating Financial Information (Details 2) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2010
Current assets:
Cash and cash equivalents	$ 75,316	$ 53,782	$ 50,810	$ 90,984
Trade receivables, net	109,868	102,006
Inventories	37,383	31,588
Deferred income taxes	14,036	10,873
Assets held for sale	0	5,864
Other	7,280	10,583
Total current assets	243,883	214,696
Property, plant and equipment, net	159,619	159,706
Other assets:
Intangible assets, net	139,797	143,911
Goodwill	137,198	116,671	116,671
Assets held for sale	0	7,807
Other	43,512	38,146
Total other assets	320,507	306,535
Total assets	724,009	680,937	728,237
Current liabilities:
Accounts payable	21,810	17,477
Accrued personnel costs	47,746	47,048
Accrued interest	16,077	16,267
Current and deferred income taxes	120	790
Liabilities associated with assets held for sale	0	8,640
Other accrued liabilities	55,268	50,946
Current portion of long-term debt	7,553	0
Total current liabilities	148,574	141,168
Long-term liabilities:
Long-term debt	449,420	500,539
Income taxes	24,637	22,079
Liabilities associated with assets held for sale	0	9,966
Other	16,968	10,314
Total long-term liabilities	491,025	542,898
Total liabilities	639,599	684,066
Stockholders' equity (net capital deficiency):
Common stock	73	61
Capital in excess of par value	720,828	640,047
Retained earnings (accumulated deficit)	(635,972)	(643,109)
Treasury stock	(519)	(128)
Total stockholders' equity (net capital deficiency)	84,410	(3,129)	56,736	281,941
Total liabilities and stockholders' equity (net capital deficiency)	724,009	680,937
Eliminations and Reclassifications
Current assets:
Deferred income taxes	(29,687)	(23,122)
Total current assets	(29,687)	(23,122)
Other assets:
Investments in subsidiaries and intercompany accounts	(458,498)	(458,498)
Intercompany notes	(637,046)	(637,046)
Deferred income taxes	(75,407)	(88,594)
Total other assets	(1,170,951)	(1,184,138)
Total assets	(1,200,638)	(1,207,260)
Current liabilities:
Current and deferred income taxes	(29,687)	(23,122)
Total current liabilities	(29,687)	(23,122)
Long-term liabilities:
Income taxes	(75,407)	(88,594)
Intercompany notes	(637,046)	(637,046)
Total long-term liabilities	(712,453)	(725,640)
Total liabilities	(742,140)	(748,762)
Stockholders' equity (net capital deficiency):
Capital in excess of par value	(458,498)	(458,498)
Total stockholders' equity (net capital deficiency)	(458,498)	(458,498)
Total liabilities and stockholders' equity (net capital deficiency)	(1,200,638)	(1,207,260)
Guarantor Subsidiaries | Reportable Legal Entities
Current assets:
Cash and cash equivalents	70,747	44,111	36,122	21,168
Trade receivables, net	109,868	102,006
Inventories	37,383	31,588
Deferred income taxes	25,828	16,168
Assets held for sale		5,864
Other	6,548	10,426
Total current assets	250,374	210,163
Property, plant and equipment, net	155,499	157,477
Other assets:
Intangible assets, net	139,797	143,911
Goodwill	137,198	116,671
Assets held for sale		7,807
Investments in subsidiaries and intercompany accounts	360,482	362,739
Deferred income taxes	53,228	70,285
Other	22,300	15,645
Total other assets	713,005	717,058
Total assets	1,118,878	1,084,698
Current liabilities:
Accounts payable	21,051	17,389
Accrued personnel costs	14,622	14,678
Current and deferred income taxes	20,073	19,232
Liabilities associated with assets held for sale		8,640
Other accrued liabilities	52,898	48,760
Total current liabilities	108,644	108,699
Long-term liabilities:
Income taxes	80,877	89,025
Liabilities associated with assets held for sale		9,966
Intercompany notes	637,046	637,046
Other	9,332	4,100
Total long-term liabilities	727,255	740,137
Total liabilities	835,899	848,836
Stockholders' equity (net capital deficiency):
Capital in excess of par value	458,498	458,498
Retained earnings (accumulated deficit)	(175,519)	(222,636)
Total stockholders' equity (net capital deficiency)	282,979	235,862
Total liabilities and stockholders' equity (net capital deficiency)	1,118,878	1,084,698
Parent Company | Reportable Legal Entities
Current assets:
Cash and cash equivalents	4,569	9,671	14,688	69,816
Deferred income taxes	17,895	17,827
Other	732	157
Total current assets	23,196	27,655
Property, plant and equipment, net	4,120	2,229
Other assets:
Investments in subsidiaries and intercompany accounts	98,016	95,759
Intercompany notes	637,046	637,046
Deferred income taxes	22,179	18,309
Other	21,212	22,501
Total other assets	778,453	773,615
Total assets	805,769	803,499
Current liabilities:
Accounts payable	759	88
Accrued personnel costs	33,124	32,370
Accrued interest	16,077	16,267
Current and deferred income taxes	9,734	4,680
Other accrued liabilities	2,370	2,186
Current portion of long-term debt	7,553
Total current liabilities	69,617	55,591
Long-term liabilities:
Long-term debt	449,420	500,539
Income taxes	19,167	21,648
Other	7,636	6,214
Total long-term liabilities	476,223	528,401
Total liabilities	545,840	583,992
Stockholders' equity (net capital deficiency):
Common stock	73	61
Capital in excess of par value	720,828	640,047
Retained earnings (accumulated deficit)	(460,453)	(420,473)
Treasury stock	(519)	(128)
Total stockholders' equity (net capital deficiency)	259,929	219,507
Total liabilities and stockholders' equity (net capital deficiency)	$ 805,769	$ 803,499