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Quarterly Results of Operations (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Business Acquisition, Contingent Consideration [Line Items]
Foreign exchange gain (loss)	$ 6,274	$ 4,349	$ (982)	$ 8,750	$ (23,258)
Stock-based compensation	3,611	18,408	14,179	31,040	18,416
Loss attributable to fair value adjustments	41,672	9,030
Impairment and other losses	$ 77,240	$ 6,655	96,399	8,599	$ 87,204
Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount			129,000
Contingent Payment
Business Acquisition, Contingent Consideration [Line Items]
Loss attributable to fair value adjustments			$ 42,187	$ 5,403

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