Patents (Narrative) (Details) - USD ($) $ in Millions |
3 Months Ended | 6 Months Ended | |||
|---|---|---|---|---|---|
Jun. 30, 2016 |
Jun. 30, 2015 |
Jun. 30, 2016 |
Jun. 30, 2015 |
Dec. 31, 2015 |
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| Minimum [Member] | |||||
| Estimated useful life of patents and other intangible assets | 17 years | ||||
| Maximum [Member] | |||||
| Estimated useful life of patents and other intangible assets | 20 years | ||||
| Approximations [Member] | |||||
| Capitalized costs for patents | $ 0.1 | $ 0.1 | $ 0.1 | $ 0.1 | |
| Investment in patents | $ 1.0 | $ 1.0 | $ 1.0 | ||
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- Definition Capitalized costs for patents No definition available.
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- Definition Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. No definition available.
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- Definition Amount after amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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