SCHEDULE II VALUATION AND QUALIFYING ACCOUNTS (Details) - Schedule of Valuation and Qualifying Accounts (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2011
Bad Debts [Member] | Allowance for Doubtful Accounts [Member]
Segment Reporting Information [Line Items]
Balance at Beginning of Year	$ 4,146	$ 4,610	$ 5,091
Recorded to Cost and Expense	2,939	2,009	1,121
Accounts Written Off, net	(3,948)	(2,284)	(1,405)
Other	9	(189)	(197)
Balance at End of Year	3,146	4,146	4,610
Allowance for Doubtful Accounts Sales Returns and Allowances [Member] | Allowance for Doubtful Accounts [Member]
Segment Reporting Information [Line Items]
Balance at Beginning of Year	1,287	1,462	1,490
Recorded to Cost and Expense	1,859	2,018	2,741
Accounts Written Off, net	(146)	(2,160)	(2,748)
Other	(10)	(33)	(21)
Balance at End of Year	2,990	1,287	1,462
Allowance for Doubtful Accounts [Member]
Segment Reporting Information [Line Items]
Balance at Beginning of Year	5,433	6,072	6,581
Recorded to Cost and Expense	4,798	4,027	3,862
Accounts Written Off, net	(4,094)	(4,444)	(4,153)
Other	(1)	(222)	(218)
Balance at End of Year	6,136	5,433	6,072
Inventory Valuation Reserve [Member]
Segment Reporting Information [Line Items]
Balance at Beginning of Year	18,787	19,557	16,720
Recorded to Cost and Expense	5,788	3,487	8,651
Accounts Written Off, net	(8,490)	(3,995)	(5,631)
Other	(357)	(262)	(183)
Balance at End of Year	15,728	18,787	19,557
Valuation Allowance of Deferred Tax Assets [Member]
Segment Reporting Information [Line Items]
Balance at Beginning of Year	10,541	9,481	13,977
Recorded to Cost and Expense	2,880	1,060	(4,496)
Accounts Written Off, net	0	0	0
Other	0	0	0
Balance at End of Year	$ 13,421	$ 10,541	$ 9,481