| Fair Value Measurement (Narrative) (Details) - Solid Concepts Inc [Member] - USD ($) $ in Thousands | 12 Months Ended | |
|---|---|---|
| Dec. 31, 2016 | Dec. 31, 2015 | |
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||
| Realized gain due to revaluation of the deferred payments in connection with acquisition | $ 100 | $ 6,200 | 
| Unrealized gain due to revaluation of the deferred payments in connection with acquisition | $ 700 | $ 17,500 | 
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- Definition Represents the amount of realized gain due to revaluation of the deferred payments in connection with acquisition. No definition available. 
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- Definition Represents the amount of unrealized gain due to revaluation of the deferred payments in connection with acquisition. No definition available. 
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. No definition available. 
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- Details 
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