Convertible Preferred Stock (Details) (USD $)	6 Months Ended
	Mar. 31, 2014
Series D Preferred Stock, Shares
Balance at beginning of period
Cash Proceeds from sale of Series D Preferred Stock and warrants, net of issuance costs of $219,000	477
Convertible debt exchanged	2,305
Total Series D activity	2,782
Balance at end of period	2,782
Series D Preferred Stock, Amount
Balance at beginning of period	0
Cash Proceeds from sale of Series D Preferred Stock and warrants, net of issuance costs of $291,000	$ 5
Convertible debt exchanged	23
Total Series D activity	28
Balance at end of period	28
Series D Preferred Stock, Paid-in Capital
Balance at beginning of period	181,443,000
Cash Proceeds from sale of Series D Preferred Stock and warrants, net of issuance costs of $291,000	4,531,000
Convertible debt exchanged for Series D Preferred stock	24,705,000
Convertible debt exchanged for restricted stock	13,111,000
Total Series D activity	29,236,000
Stock based compensation	2,539,000
Warrant derivatives reclassified to equity	2,834,000
Other equity activity, net	2,764,000
Balance at end of period	$ 231,910,000