Fair Value Measurements Stock Warrant (Details) $ in Thousands	9 Months Ended
	Jun. 30, 2015 USD ($)
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance at September 30, 2014	$ 0
Additions	5,009
Change in fair value	445
Balance at June 30, 2015	5,454
Convertible Debt Securities [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance at September 30, 2014	0
Additions	4,934
Change in fair value	451
Balance at June 30, 2015	5,385
Warrant [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance at September 30, 2014	0
Additions	75
Change in fair value	(6)
Balance at June 30, 2015	$ 69