Summary of Significant Accounting Policies - Additional Information (Details) $ in Millions	3 Months Ended
	Mar. 31, 2021 USD ($)
Amortization expense	$ 0.0
Impairment charges	0.0
General and Administrative Expense [Member]
Deferred policy acquisition cost	1.8
Other Assets [Member]
Deferred policy acquisition cost	5.7
Other Current Assets [Member]
Deferred implementation costs	$ 0.9