Income Taxes - Unrecognized Tax Benefits (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Income taxes
Pre-change net operating losses that can be used in future years	$ 13,500
Net operating losses post-change years are not subject to limitation	892,100
Deferred tax assets, U.S. net operating loss carryforwards	905,600
Amount of net operating loss carryforwards that will expire due to IRC Section 382 limitations	9,000
Net operating loss carryforwards	217,812	$ 120,992
Un-repatriated foreign earnings	0
Restated adjustment
Income taxes
Net operating loss carryforwards	736,500
Canada
Income taxes
Research and experimental development expenditure carryforwards	17,700
Canadian ITC credit carryforwards	1,300
Foreign
Income taxes
Net operating loss carryforwards	12,052	$ 10,014
Foreign | French
Income taxes
Unused net operating loss carryforwards	29,600
Foreign | Canada
Income taxes
Net operating loss carryforwards	10,900
Foreign | Netherlands
Income taxes
Unused net operating loss carryforwards	$ 2,900
Operating loss carried forward period	6 years