Investments - Short Term Investments Gains and Losses (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Investments, Debt and Equity Securities [Abstract]
Initial Book Value	$ (69,290)	$ (69,290)
Cumulative Gross Unrealized Gains	307,441	298,490
Cumulative Gross Unrealized Losses	0	0
Investment in Consensus	$ 238,151	$ 229,200