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Other Intangible Assets, Other than Goodwill (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011
Amortized intangible assets:
Gross carrying amount	$ 20,716	$ 15,281
Weighted average amortization period	7 years	7 years
Accumulated amortization	13,295	10,787
Unamortized intangible assets:
In-process research and development	722
Technology [Member]
Amortized intangible assets:
Gross carrying amount	11,774	6,339
Weighted average amortization period	7 years	7 years
Accumulated amortization	5,762	4,495
Customer relationship [Member]
Amortized intangible assets:
Gross carrying amount	8,100	8,100
Weighted average amortization period	7 years	7 years
Accumulated amortization	6,847	5,689
Patents [Member]
Amortized intangible assets:
Gross carrying amount	842	842
Weighted average amortization period	6 years	6 years
Accumulated amortization	$ 686	$ 603

X

- Definition

Weighted average amortization period of finite-lived intangible assets acquired either individually or as part of a group of assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

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Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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- Definition

The amount of purchased research and development assets that are acquired in a business combination have no alternative future use and are therefore written off in the period of acquisition.

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-Publisher FASB

-Name FASB Interpretation (FIN)

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