Components of Balance Sheet Accounts Classified as Assets and Liabilities Held for Sale (Detail) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013
Assets:
Total current assets of business held for sale	$ 128	$ 2,059
Current assets of business held for sale	264	278
Liabilities:
Total current liabilities of business held for sale	196	1,086
Repair Group [Member]
Assets:
Receivables, net	91	1,067
Inventories, net	0	660
Deferred income taxes	15	317
Prepaid expenses and other current assets	22	15
Total current assets of business held for sale	128	2,059
Current assets of business held for sale	264	278
Property, plant and equipment, net	0	840
Other assets	0	32
Total noncurrent assets of business held for sale	0	872
Liabilities:
Accounts payable	23	278
Accrued liabilities	173	808
Total current liabilities of business held for sale	$ 196	$ 1,086