Accrued Expenses and Other Current Liabilities (Schedule of Accrued Liabilities) (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013	Sep. 30, 2012	Mar. 31, 2012
Payables and Accruals [Abstract]
Compensation	$ 4,433	$ 3,798
Warranty	5,942	3,692	4,186
Termination fee	2,775	2,775
Professional fees	1,001	938
Royalty	1,289	1,445
Customer deposits	655	2,408
Deferred revenue	4,368	6,670
Self insurance	1,328	1,155
Capital lease obligations	0	4,411
Income and other taxes	1,310	1,573
Loss on sale contracts	807	765
Severance and restructuring accruals	892	1,521
Loss on inventory purchase commitments	0	723
Other	1,305	761
Accrued expenses and other current liabilities	$ 26,105	$ 32,635