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Inventories (Tables)

3 Months Ended

Mar. 31, 2013

Inventories [Abstract]

Summary of Inventories

		March 31, 2013				December 31, 2012
Component parts		$	9,456			$	6,613
Work-in-process and finished goods			12,232				12,062
Total		$	21,688			$	18,675

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- Definition

Tabular disclosure of inventories.

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