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Accrued Liabilities (Annual) (Detail) - Warranty obligations (USD $) In Thousands, unless otherwise specified	Dec. 31, 2011	Dec. 31, 2010	Nov. 30, 2010	Dec. 31, 2009
Balance at beginning of year	$ 274	$ 291	$ 291	$ 389
Provisions	125	16
Deductions	(142)	(114)
Balance at end of year	$ 274	$ 291	$ 291	$ 389

- Definition

Carrying value as of the balance sheet date of obligations incurred through that date and payable for estimated claims under standard and extended warranty protection rights granted to customers.

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