Employee benefit plans (Details) - USD ($) $ in Thousands |
12 Months Ended | |
|---|---|---|
Dec. 31, 2019 |
Dec. 31, 2018 |
|
| Employee Benefit Plans [Abstract] | ||
| Contributions related to plan and recognized expense | $ 100 | $ 0 |
| Maximum [Member] | ||
| Employee Benefit Plans [Abstract] | ||
| Percentage of 100% participant contributions matched | 3.00% | |
| Percentage of 50% participant contributions matched | 5.00% | |
| X | ||||||||||
- Definition Percentage employer matches of the employee's percentage contribution matched. No definition available.
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| X | ||||||||||
- References No definition available.
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| X | ||||||||||
- Definition Amount of contribution received by defined benefit plan from employer which increases plan assets. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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| X | ||||||||||
- Definition Percentage employer matches of the employee's percentage contribution matched. No definition available.
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| X | ||||||||||
- Details
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