Commitments and contingencies Commitments and Contingencies (Details) |
Jun. 30, 2017
USD ($)
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| Commitments and Contingencies Disclosure [Abstract] | |
| Guarantee of obligations of Eurosite Power, Inc. | $ 310,000 |
| Guarantee liability | $ 10,000 |
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- References No definition available.
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- Definition Maximum potential amount of future payments (undiscounted) the guarantor could be required to make under the guarantee or each group of similar guarantees before reduction for potential recoveries under recourse or collateralization provisions. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
- Definition Fair value portion of guarantee, including, but not limited to, financial standby letter of credit, fair value guarantee, guarantee of collection of scheduled contractual cash flows from financial assets, and contracts that contingently require the guarantor to make payments or perform services. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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