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.

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Amount of cash paid to acquire the entity.

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The total cost of the acquired entity including the cash paid to shareholders of acquired entities, fair value of debt and equity securities issued to shareholders of acquired entities, the fair value of the liabilities assumed, and direct costs of the acquisition.

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Amount of direct costs of the business combination including legal, accounting, and other costs incurred to consummate the business acquisition.

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The amount of acquisition cost of a business combination allocated to an identifiable intangible asset that will be amortized.

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Amount of goodwill arising from a business combination, which is the excess of the cost of the acquired entity over the amounts assigned to assets acquired and liabilities assumed.

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The amount of acquisition cost of a business combination allocated to property, plant and equipment to be used in ongoing operations.

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The amount of acquisition cost of a business combination allocated to current assets, net of cash acquired.

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Acquisition (Details) (USD $) In Thousands, unless otherwise specified			12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2012 Cloud 9 Wireless, Inc.	Aug. 06, 2012 Cloud 9 Wireless, Inc.
The business
Cost of acquired entity, excluding contingent consideration				$ 3,500
Transaction costs	50	0		50
Allocation of purchase price
Current assets				899
Property, plant and equipment				65
Intangible and other assets				1,758
Goodwill				1,232
Current liabilities				(454)
Net assets acquired				3,500
Fair value of acquired assets and liabilities			$ 3,185
Summary of fair values allocated to the intangible assets
Weighted-average Remaining Life			5 years