Related Parties (Details) - USD ($) $ / shares in Units, $ in Millions	1 Months Ended
	May 31, 2018	Dec. 31, 2020	Dec. 31, 2019
Related Party Transaction [Line Items]
Income tax liabilities related to stock-based compensation		$ 1.2	$ 1.2
Current asset, reimbursement from officer		$ 1.2	$ 1.2
Directors [Member]
Related Party Transaction [Line Items]
Common stock repurchased and subsequently cancelled, shares	1,225,214
Average price per share	$ 22.81
Common stock repurchased and subsequently cancelled, discount rate	2.00%