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Summary of Significant Accounting Policies - Research and Development (Details) (USD $) In Thousands, unless otherwise specified | 12 Months Ended
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Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011
Research and Development |  |  |
Customer-funded service sales | $ 10,302 | $ 5,470 | $ 1,061
Customer-funded costs included in costs of service sales | $ 2,387 | $ 3,424 | $ 412

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- Definition Customer Funded Costs Of Goods Sold + References No definition available. + Details
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- Definition Customer Funded Sales Revenue, Services, Net + References No definition available. + Details
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- Details
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