Condensed Consolidating Financial Information (Details 2) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2013	Sep. 30, 2012	Jun. 30, 2012	Sep. 30, 2011
Current assets:
Cash and cash equivalents	$ 40,490	$ 53,782	$ 28,976	$ 50,810
Trade receivables, net	103,767	102,006
Inventories	42,448	31,588
Current and deferred income taxes	12,730	10,873
Assets held for sale	0	5,864
Other	12,341	10,583
Total current assets	211,776	214,696
Property, plant and equipment, net	160,347	159,706
Other assets:
Intangible assets, net	149,390	143,911
Goodwill	132,176	116,671
Assets held for sale	0	7,807
Other	38,922	38,146
Total other assets	320,488	306,535
Total assets	692,611	680,937	645,818
Current liabilities:
Accounts payable	18,921	17,477
Accrued personnel costs	37,854	47,048
Accrued interest	9,672	16,267
Current and deferred income taxes	0	790
Liabilities associated with assets held for sale	0	8,640
Other accrued liabilities	50,710	50,946
Current portion of long-term debt	15,090	0
Total current liabilities	132,247	141,168
Long-term liabilities:
Long-term debt	449,380	500,539
Income taxes	21,292	22,079
Liabilities associated with assets held for sale	0	9,966
Other	16,104	10,314
Total long-term liabilities	486,776	542,898
Total liabilities	619,023	684,066
Stockholders' equity (net capital deficiency):
Common stock	73	61
Capital in excess of par value	720,161	640,047
Retained earnings (accumulated deficit)	(646,225)	(643,109)
Treasury stock	(421)	(128)
Total stockholders' equity (net capital deficiency)	73,588	(3,129)
Total liabilities and stockholders' equity (net capital deficiency)	692,611	680,937
Guarantor Subsidiaries
Current assets:
Cash and cash equivalents	31,511	44,111	19,284	36,122
Trade receivables, net	103,767	102,006
Inventories	42,448	31,588
Current and deferred income taxes	22,389	16,168
Assets held for sale		5,864
Other	11,433	10,426
Total current assets	211,548	210,163
Property, plant and equipment, net	156,711	157,477
Other assets:
Intangible assets, net	149,390	143,911
Goodwill	132,176	116,671
Assets held for sale		7,807
Investments in subsidiaries and intercompany accounts	376,437	362,569
Deferred income taxes	65,228	70,285
Other	17,343	15,645
Total other assets	740,574	716,888
Total assets	1,108,833	1,084,528
Current liabilities:
Accounts payable	18,436	17,389
Accrued personnel costs	10,545	14,678
Current and deferred income taxes	25,955	19,232
Liabilities associated with assets held for sale		8,640
Other accrued liabilities	48,370	48,760
Total current liabilities	103,306	108,699
Long-term liabilities:
Income taxes	88,924	89,025
Liabilities associated with assets held for sale		9,966
Intercompany notes	637,046	637,046
Other	8,529	4,100
Total long-term liabilities	734,499	740,137
Total liabilities	837,805	848,836
Stockholders' equity (net capital deficiency):
Capital in excess of par value	458,498	458,498
Retained earnings (accumulated deficit)	(187,470)	(222,806)
Total stockholders' equity (net capital deficiency)	271,028	235,692
Total liabilities and stockholders' equity (net capital deficiency)	1,108,833	1,084,528
Parent Company
Current assets:
Cash and cash equivalents	8,979	9,671	9,692	14,688
Current and deferred income taxes	36,885	17,827
Other	908	157
Total current assets	46,772	27,655
Property, plant and equipment, net	3,636	2,229
Other assets:
Investments in subsidiaries and intercompany accounts	82,061	95,929
Intercompany notes	637,046	637,046
Deferred income taxes	22,302	18,309
Other	21,579	22,501
Total other assets	762,988	773,785
Total assets	813,396	803,669
Current liabilities:
Accounts payable	485	88
Accrued personnel costs	27,309	32,370
Accrued interest	9,672	16,267
Current and deferred income taxes	20,589	4,680
Other accrued liabilities	2,340	2,186
Current portion of long-term debt	15,090
Total current liabilities	75,485	55,591
Long-term liabilities:
Long-term debt	449,380	500,539
Income taxes	19,898	21,648
Other	7,575	6,214
Total long-term liabilities	476,853	528,401
Total liabilities	552,338	583,992
Stockholders' equity (net capital deficiency):
Common stock	73	61
Capital in excess of par value	720,161	640,047
Retained earnings (accumulated deficit)	(458,755)	(420,303)
Treasury stock	(421)	(128)
Total stockholders' equity (net capital deficiency)	261,058	219,677
Total liabilities and stockholders' equity (net capital deficiency)	813,396	803,669
Eliminations and Reclassifications
Current assets:
Current and deferred income taxes	(46,544)	(23,122)
Total current assets	(46,544)	(23,122)
Other assets:
Investments in subsidiaries and intercompany accounts	(458,498)	(458,498)
Intercompany notes	(637,046)	(637,046)
Deferred income taxes	(87,530)	(88,594)
Total other assets	(1,183,074)	(1,184,138)
Total assets	(1,229,618)	(1,207,260)
Current liabilities:
Current and deferred income taxes	(46,544)	(23,122)
Total current liabilities	(46,544)	(23,122)
Long-term liabilities:
Income taxes	(87,530)	(88,594)
Intercompany notes	(637,046)	(637,046)
Total long-term liabilities	(724,576)	(725,640)
Total liabilities	(771,120)	(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)	$ (1,229,618)	$ (1,207,260)