Stock based compensation, options and warrants (Narrative) (Details) |
3 Months Ended |
|---|---|
|
Mar. 31, 2019
USD ($)
| |
| Share-based Payment Arrangement [Abstract] | |
| Unrecognized compensation cost | $ 300,000 |
| Unrecognized compensation cost, period | 4 months |
| X | ||||||||||
- References No definition available.
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| X | ||||||||||
- Definition Amount of cost not yet recognized for nonvested award under share-based payment arrangement. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition Weighted-average period over which cost not yet recognized is expected to be recognized for award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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