Income Taxes - Deferred Tax Assets (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012
Income Taxes [Abstract]
Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Allowance for Doubtful Accounts	$ 370	$ 675
Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Accrued Liabilities	7,023	6,254
Deferred Tax Assets, Operating Loss Carryforwards	110,259	106,004
Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Other	1,022	1,085
Deferred Tax Assets Investments	235	292
Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits, Share-based Compensation Cost	2,732	2,757
Deferred Tax Assets, Capital Loss Carryforwards	4,100	3,909
Deferred Tax Assets Property Plant And Equipment	0	397
Deferred Tax Assets, Other	2,334	1,651
Deferred Tax Assets, Gross	128,075	123,024
Deferred Tax Assets, Valuation Allowance	(126,500)	(121,962)
Deferred Tax Assets, Net	1,575	1,062
Deferred Tax Liabilities, Property, Plant and Equipment	(570)	0
Deferred Tax Liabilities, Other	(123)	(196)
Deferred Income Tax Liabilities	(693)	(196)
Deferred Tax Assets (Liabilities), Net	$ 882	$ 866