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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 ($)
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