Detail of Selected Balance Sheet Accounts (Narrative) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2012
Property Plant And Equipment [Line Items]
Property, plant and equipment gross	$ 245,098	$ 226,488
Accumulated depreciation	88,202	81,993
Depreciation	11,386	8,519	10,465
Assets Under Capital Leases
Property Plant And Equipment [Line Items]
Property, plant and equipment gross	0	500
Accumulated depreciation		$ 500