Description of Business and Summary of Significant Accounting Policies - Other income (expense), net (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Description of Business and Summary of Significant Accounting Policies
Gain (loss) on remeasurement of debt		$ (895)	$ (6,159)
Gain (loss) on remeasurement of Legacy Porch warrants		(2,584)	(2,090)
Transaction costs - recapitalization		(3,974)
Other, net	$ 165	(274)	30
Total other income (expense), net	340	(6,931)	(7,484)
Gain on settlement of accounts payable	$ 175	$ 796	$ 735