Geographic Regions (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended								12 Months Ended
	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2012
Revenues from External Customers and Long-Lived Assets [Line Items]
Net revenue	$ 19,822	$ 9,190	$ 12,717	$ 14,772	$ 6,925	$ 10,398	$ 8,118	$ 9,357	$ 56,501	$ 34,798	$ 81,539
Operating income (loss)									(13,089)	(19,994)	(32,984)
Net long-lived assets	9,752				11,066				9,752	11,066
The Netherlands
Revenues from External Customers and Long-Lived Assets [Line Items]
Net revenue									31,779	17,615	48,294
Operating income (loss)									(9,403)	(11,139)	(18,686)
Net long-lived assets	7,617				8,733				7,617	8,733
United States
Revenues from External Customers and Long-Lived Assets [Line Items]
Net revenue									20,433	11,855	27,638
Operating income (loss)									(207)	(4,346)	(1,025)
Net long-lived assets	1,016				1,160				1,016	1,160
France
Revenues from External Customers and Long-Lived Assets [Line Items]
Net revenue									4,218	5,328	5,584
Operating income (loss)									(611)	(815)	(3,041)
Net long-lived assets	475				552				475	552
China
Revenues from External Customers and Long-Lived Assets [Line Items]
Net revenue									71	0	23
Operating income (loss)									(2,868)	(3,694)	(10,232)
Net long-lived assets	$ 644				$ 621				$ 644	$ 621