Accounts Receivable (Schedule of Accounts Receivable) (Details) - USD ($) $ in Thousands	Jun. 30, 2015	Sep. 30, 2014
Accounts receivable	$ 274,902	$ 346,858
Allowance for uncollectible customer amounts	(5,127)	(7,078)
Trade Accounts Receivable [Member]
Accounts Receivable, Gross	266,422	291,584
Accounts Receivable from Chinese Financial Institution [Member]
Accounts Receivable, Gross	$ 13,607	$ 62,352