Geographic Information (Schedule of Long-Lived Assets by Geographical Areas) (Details) - USD ($) $ in Thousands	Sep. 30, 2015	Sep. 30, 2014
Revenues From External Customers And Long Lived Assets [Line Items]
Property, plant and equipment, net	$ 154,594	$ 156,896
United States
Revenues From External Customers And Long Lived Assets [Line Items]
Property, plant and equipment, net	95,694	99,711
Canada
Revenues From External Customers And Long Lived Assets [Line Items]
Property, plant and equipment, net	53,879	51,493
United Kingdom
Revenues From External Customers And Long Lived Assets [Line Items]
Property, plant and equipment, net	$ 5,021	$ 5,692