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Restructuring (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Components of restructuring expenses and reserve
Accrued restructuring, beginning of period	$ 329	$ 1,728	$ 1,383	$ 2,366
Employee severance, benefits and related costs		441		1,019
Payments	(213)	(902)	(1,267)	(2,029)
Inventory and other adjustments		166		77
Accrued restructuring, end of period	$ 116	$ 1,433	$ 116	$ 1,433

Amount of other expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses associated with a discontinued operation or an asset retirement obligation.

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- Definition

Amount of expenses for special or contractual termination benefits provided to current employees involuntarily terminated under a benefit arrangement associated exit or disposal activities pursuant to an authorized plan. Excludes expenses related to one-time termination benefits, a discontinued operation or an asset retirement obligation.

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