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Fair value of financial instruments - Effect of unobservable inputs on fair value measurement (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2020 USD ($)
Positive Effect On Fair Value Measurements [Member]
Disclosure of Fair value of financial instruments [Line Items]
Change in fair value measurement due to change in one or more unobservable inputs to reflect reasonably possible alternative assumptions, assets	$ (149)
Negative Effect On Fair Value Measurements [Member]
Disclosure of Fair value of financial instruments [Line Items]
Change in fair value measurement due to change in one or more unobservable inputs to reflect reasonably possible alternative assumptions, assets	$ 154

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- References

No definition available.

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- Definition

The amount of increase in the fair value measurement of assets due to a change in one or more unobservable inputs to reflect reasonably possible alternative assumptions.

+ References

No definition available.

+ Details

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- Details

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- Details

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