Basis of Presentation and Summary of Significant Accounting Policies (Details) - USD ($)	9 Months Ended
	Oct. 03, 2020	Dec. 31, 2020	Dec. 31, 2019
Organization, Consolidation and Presentation of Financial Statements [Line Items]
Accumulated deficit	$ (778,033,000)		$ (639,778,000)
Accounting Standards Update [Extensible List]	us-gaap:AccountingStandardsUpdate201905Member
Cumulative Effect, Period of Adoption, Adjustment
Organization, Consolidation and Presentation of Financial Statements [Line Items]
Accumulated deficit	$ 0
Agreement and Plant of Merger | Google LLC and Magnoliophyta Inc. | Forecast
Organization, Consolidation and Presentation of Financial Statements [Line Items]
Share price (in dollars per share)		$ 7.35