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Intangible Assets, Redeemable Common Units and Mezzanine Equity (Details) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2015 USD ($) item | Dec. 31, 2007 patent
Intangible Assets, Redeemable Common Units and Mezzanine Equity |  |
Number of patents | patent |  | 3
Cash payment upon execution of agreement | $ | $ 1,000 |
On-going quarterly cash payments | $ | $ 25 |
Current commercial price paid for the first 24 modules sold to commercial customers (as a percent) | 0.25% |
Number of modules sold under first commercial scale | item | 24 |
Current commercial price paid for the next 12 modules sold to commercial customers (as a percent) | 0.15% |
Number of modules sold under subsequent commercial scale | item | 12 |

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- Definition Represents the cash payment upon execution of agreement, + References No definition available. + Details
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- Definition Represents the number of modules sold under first commercial scale. + References No definition available. + Details
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- Definition Represents the number of modules sold under subsequent commercial scale. + References No definition available. + Details
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- Definition Represents the percentage of current commercial price paid for the next 12 modules after first 24 modules sold to commercial customers. + References No definition available. + Details
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- Definition Represents the percentage of current commercial price paid for the first 24 modules sold to commercial customers. + References No definition available. + Details
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- References No definition available. + Details
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