Intangible Assets (Tables)

12 Months Ended

Sep. 30, 2015

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Carrying Value of Intangible Assets

The following table sets forth the carrying value of intangible assets:

(in thousands)	As of September 30, 2015							As of September 30, 2014
	Gross Assets		Accumulated Amortization			Net Assets		Gross Assets		Accumulated Amortization			Net Assets
Patents	$	3,274	(3,274		)	$	—	$	4,697	(4,615		)	$	82
Total	$	3,274	$	(3,274	)	$	—	$	4,697	$	(4,615	)	$	82