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Non-Controlling Interests and Preferred Stock of Subsidiaries - Summary of Preferred Stock of Subsidiary Balances on Condensed Consolidated Balance Sheets (Details) $ in Thousands | Dec. 31, 2020 USD ($)
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Minority Interest [Line Items] |
Total redeemable preferred stock of subsidiaries classified as liability | $ 35,412
HC LLC |
Minority Interest [Line Items] |
Total redeemable preferred stock of subsidiaries classified as liability | 1,556
HC LLC | Series A-1 Preferred Stock |
Minority Interest [Line Items] |
Total redeemable preferred stock of subsidiaries classified as liability | 1,556
Forest | Forest Preferred Stock |
Minority Interest [Line Items] |
Total redeemable preferred stock of subsidiaries classified as liability | $ 33,856

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