Summary of Significant Accounting Policies, Concentrations of Credit Risk (Details) $ in Millions	12 Months Ended
	Dec. 31, 2020 USD ($) Customer	Dec. 31, 2019 USD ($)
Concentration Risk [Abstract]
Foreign cash balance | $	$ 16.4	$ 8.5
Customer Concentration Risk [Member]
Concentration Risk [Abstract]
Number of largest individual customers | Customer	5