Geographic Regions (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended								12 Months Ended
	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2011	Sep. 30, 2011	Jun. 30, 2011	Mar. 31, 2011	Dec. 31, 2010	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2010
Revenues from External Customers and Long-Lived Assets [Line Items]
Net revenue	$ 10,945	$ 24,300	$ 21,566	$ 24,728	$ 59,868	$ 71,871	$ 61,253	$ 53,712	$ 81,539	$ 246,705	$ 120,019
Operating income (loss)									(32,984)	38,279	15,909
Net Long-lived Assets	12,387				12,680				12,387	12,680
The Netherlands [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net revenue									48,294	195,404	88,467
Operating income (loss)									(18,686)	28,724	12,165
Net Long-lived Assets	9,555				9,960				9,555	9,960
United States [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net revenue									27,638	24,079	15,020
Operating income (loss)									(1,025)	(1,742)	(1,955)
Net Long-lived Assets	1,448				1,642				1,448	1,642
France [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net revenue									5,584	26,347	16,532
Operating income (loss)									(3,041)	12,992	5,699
Net Long-lived Assets	676				874				676	874
China [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net revenue									23	875	0
Operating income (loss)									(10,232)	(1,695)	0
Net Long-lived Assets	$ 708				$ 204				$ 708	$ 204