Summary of Significant Accounting Policies - Advertising Costs and Income Taxes (Details) - USD ($)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Marketing and Advertising Expense [Abstract]
Advertising costs	$ 2,488,000	$ 1,516,000
Income Tax Disclosure [Abstract]
Uncertain tax positions	$ 0	$ 0