Segment Reporting and Geographic Information (Details 1) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Mar. 31, 2017	Mar. 31, 2016
Revenues from External Customers and Long-Lived Assets [Line Items]
Total revenue	$ 28,060	$ 30,440	$ 55,097	$ 61,255
UK [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Total revenue	19,916	22,642	39,069	45,033
Italy [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Total revenue	4,075	5,025	8,450	10,374
Rest of World [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Total revenue	$ 4,069	$ 2,773	$ 7,578	$ 5,848