Equity method investments (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019	Jul. 24, 2020	Dec. 31, 2019
Equity Method Investments and Joint Ventures [Abstract]
Oncacare Limited	$ 4,817		$ 4,817		$ 4,900	$ 0
Equity method investment, ownership percentage (percentage)	49.00%		49.00%
Equity method investment, majority ownership percentage (percentage)	51.00%		51.00%
Equity method investment, period majority voting share capital can be sold to the company			18 months
Payments to Acquire Equity Method Investments			$ 2,450	$ 0
Loss on equity method investments	$ 83	$ 0	$ 83	$ 0

Equity Method Investment, Majority Ownership Percentage

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- Definition

Equity Method Investment, Period Majority Voting Share Capital Can Be Sold To The Company

+ References

No definition available.

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- Definition

The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

+ References

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- Definition

This item represents the carrying amount on the entity's balance sheet of its investment in common stock of an equity method investee. This is not an indicator of the fair value of the investment, rather it is the initial cost adjusted for the entity's share of earnings and losses of the investee, adjusted for any distributions (dividends) and other than temporary impairment (OTTI) losses recognized.

+ References

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- References

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- Definition

Amount of income (loss) for proportionate share of equity method investee's income (loss).

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- Definition

The cash outflow associated with the purchase of or advances to an equity method investments, which are investments in joint ventures and entities in which the entity has an equity ownership interest normally of 20 to 50 percent and exercises significant influence.

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