Schedule Of Fair Value Assigned To Assets Acquired And Liabilities Assumed (Detail) (Westerman, Inc, USD $)	Sep. 17, 2012
Westerman, Inc
Business Acquisition [Line Items]
Cash and cash equivalents	$ 639,000
Accounts receivable	6,355,000
Inventories	15,377,000
Prepaid expenses and other current assets	836,000
Intangible assets	18,318,000
Property, plant and equipment	23,503,000
Total identifiable assets	65,028,000
Accounts payable	(3,024,000)
Accrued liabilities	(2,479,000)
Other current liabilities	(765,000)
Short-term borrowings	(7,251,000)
Deferred income taxes	(11,039,000)
Net identifiable assets	40,470,000
Goodwill	22,279,000
Total cash consideration	$ 62,749,000