Components of Balance Sheet Accounts Classified as Assets and Liabilities Held for Sale (Detail) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Sep. 30, 2014
Assets:
Cash	$ 25	$ 0
Receivables, net	43	91
Deferred income taxes	15	15
Prepaid expenses and other current assets	0	22
Asset held for sale	264	264
Current assets of business from discontinued operations	347	392
Liabilities:
Accounts payable	0	23
Accrued liabilities	204	173
Total current liabilities of business from discontinued operations	$ 204	$ 196

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