Note 4 - Fair Value Measurements (Details) - Fair values of our short- and long-term debt (USD $)	Jun. 30, 2013	Sep. 30, 2012
3.25% Convertible Subordinated Notes [Member]
Note 4 - Fair Value Measurements (Details) - Fair values of our short- and long-term debt [Line Items]
Carrying Amount		$ 11,698,000
Fair Value		11,351,000
8.50% Convertible Senior Notes [Member]
Note 4 - Fair Value Measurements (Details) - Fair values of our short- and long-term debt [Line Items]
Carrying Amount	36,854,000	52,339,000
Fair Value	39,548,000	29,369,000
8.50% Senior Secured Second Lien Notes [Member]
Note 4 - Fair Value Measurements (Details) - Fair values of our short- and long-term debt [Line Items]
Carrying Amount	73,760,000	72,893,000
Fair Value	72,222,000	81,299,000
10.875% Secured Notes [Member]
Note 4 - Fair Value Measurements (Details) - Fair values of our short- and long-term debt [Line Items]
Carrying Amount	11,644,000
Fair Value	$ 12,688,000