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Commitments and Contingencies - Warranty Liability (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Warranty Liability [Abstract]
Aggregate product warranty liability at beginning of year	$ 776	$ 313	$ 215
Net aggregate (income) expense related to product warranties	(68)	1,208	650
Aggregate reductions for payments	(112)	(745)	(552)
Aggregate product warranty liability at end of year	$ 596	$ 776	$ 313

- 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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