Accounts Receivable (Schedule of Accounts Receivable) (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2014	Sep. 30, 2013
Allowance for uncollectible customer amounts	$ (7,260)	$ (8,872)
Accounts receivable	322,463	381,065
Trade Accounts Receivable [Member]
Accounts Receivable, Gross	279,579	316,983
Accounts Receivable from Chinese Financial Institution [Member]
Accounts Receivable, Gross	$ 50,144	$ 72,954