Components of Balance Sheet Accounts Classified as Assets and Liabilities Held for Sale (Detail) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2012
Assets:
Receivables, net	$ 2,574
Inventories	1,188
Deferred income taxes	47
Prepaid expenses and other current assets	99
Total current assets of business held for sale	3,908
Property, plant and equipment, net	2,533
Other assets	43
Total noncurrent assets of business held for sale	2,576
Liabilities:
Current maturities of debt	2
Accounts payable	546
Accrued liabilities	623
Total current liabilities of business held for sale	1,171
Deferred income taxes	388
Other long-term liabilities	2
Total noncurrent liabilities of business held for sale	$ 390