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Equity Awards and Instruments - Stock Options Narrative (Details) - USD ($) $ / shares in Units, $ in Thousands					9 Months Ended	12 Months Ended
	Aug. 28, 2020	Mar. 12, 2020	May 19, 2019	Mar. 22, 2019	Sep. 30, 2020	Dec. 31, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Put provision start period, number of months since exercise					6 months
Put provision end Period, number of days after start period					30 days
Call Provision Exercise Period					7 months
Dividends payable (USD per share)	$ 1.50
Stock options exercise price reduction (USD per share)	$ 1.50
Stock Option | 2020 Incentive Award Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted (in shares)					10,000
Proceeds from stock options exercised					$ 7,776	$ 3,612
Stock Option | Class B Common Stock | 2020 Incentive Award Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted (in shares)		10,000	10,000	4,816,000
Grant date fair value (USD per share)		$ 2.49	$ 1.65	$ 1.66

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