XML 56 R46.htm IDEA: XBRL DOCUMENT
v3.22.1

Investments - Narrative (Details) - USD ($) $ in Millions | 3 Months Ended
--- | ---
Mar. 31, 2022 | Mar. 31, 2021
Schedule of Investments [Abstract] |  |
Realized gain (loss) on marketable securities | $ 0.1 | $ 0.8

X
- Definition Amount of realized gain (loss) on investment in debt and equity securities. + References No definition available. + Details
Name: | us-gaap_DebtAndEquitySecuritiesRealizedGainLoss
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_ScheduleOfInvestmentsAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration