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Basic and Diluted Net Loss Per Share - Computation of diluted net loss per antidilutive (Details) - $ / shares		3 Months Ended		9 Months Ended
	Sep. 16, 2021	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020	Sep. 15, 2021
Basic and Diluted Net Loss Per Share
Conversion price (per unit)	$ 37.74					$ 25
Potentially dilutive shares	11,261,261
Stock options
Basic and Diluted Net Loss Per Share
Antidilutive securities excluded from computation of earnings per share, amount		5,131,615	7,916,924	5,131,615	7,916,924
Restricted stock units and awards
Basic and Diluted Net Loss Per Share
Antidilutive securities excluded from computation of earnings per share, amount		984,135	2,144,819	984,135	2,144,819
Legacy Porch warrants
Basic and Diluted Net Loss Per Share
Antidilutive securities excluded from computation of earnings per share, amount			3,343,451		3,343,451
Public and private warrants
Basic and Diluted Net Loss Per Share
Antidilutive securities excluded from computation of earnings per share, amount				1,821,951
Earnout shares
Basic and Diluted Net Loss Per Share
Antidilutive securities excluded from computation of earnings per share, amount		4,099,999		4,099,999
Convertible debt
Basic and Diluted Net Loss Per Share
Antidilutive securities excluded from computation of earnings per share, amount		16,998,130	1,856,353	16,998,130	1,856,353