Revenue - Performance obligations recognition (Details) |
Sep. 30, 2018
USD ($)
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| Revenue | |
| Remaining performance obligation | $ 1,345,000 |
| NY-ESO program | |
| Revenue | |
| Remaining performance obligation | 88,000 |
| PRAME program | |
| Revenue | |
| Remaining performance obligation | 1,257,000 |
| Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2018-10-01 | NY-ESO program | |
| Revenue | |
| Remaining performance obligation | $ 88,000 |
| Remaining performance obligation recognition period | 3 months |
| Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2018-10-01 | PRAME program | |
| Revenue | |
| Remaining performance obligation | $ 1,257,000 |
| Remaining performance obligation recognition period | 6 months |
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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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- Definition Amount of transaction price allocated to performance obligation that has not been recognized as revenue. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Period in which remaining performance obligation is expected to be recognized as revenue, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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