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Income Taxes - Federal Net Operating Loss Carryforwards (Details)
$ in Thousands
Jun. 30, 2021
USD ($)
Operating Loss Carryforwards  
Federal net operating loss carryforwards $ 951,601
2022  
Operating Loss Carryforwards  
Federal net operating loss carryforwards 143,137
2023  
Operating Loss Carryforwards  
Federal net operating loss carryforwards 131,077
2024  
Operating Loss Carryforwards  
Federal net operating loss carryforwards 60,132
2025  
Operating Loss Carryforwards  
Federal net operating loss carryforwards 117,277
2026 through 2037  
Operating Loss Carryforwards  
Federal net operating loss carryforwards 486,542
Indefinite  
Operating Loss Carryforwards  
Federal net operating loss carryforwards $ 13,436