Fair Value (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Financial assets and liabilities carried at fair value and measured at fair value on a recurring basis:
Assets, transfers from Level 1 to Level 2	$ 0	$ 0
Liabilities, transfers from Level 1 to Level 2	0	0
Assets, transfers from Level 2 to Level 1	0	0
Liabilities, transfers from Level 2 to Level 1	0	0
Interest rate swap liabilities	3,995	8,766
Contingent Value Rights Liability
Financial assets and liabilities carried at fair value and measured at fair value on a recurring basis:
Common stock warrant liability		656
Recurring basis | Significant Observable Inputs (Level 2)
Financial assets and liabilities carried at fair value and measured at fair value on a recurring basis:
Interest rate swap assets	188
Interest rate swap liabilities	3,995	8,766
Recurring basis | Level 3
Financial assets and liabilities carried at fair value and measured at fair value on a recurring basis:
Common stock warrant liability		8,790
Contingent value rights liability		656
Carrying Value
Financial assets and liabilities carried at fair value and measured at fair value on a recurring basis:
Contingent value rights liability	169,818	160,655
Estimated Fair Value
Financial assets and liabilities carried at fair value and measured at fair value on a recurring basis:
Contingent value rights liability	$ 180,731	$ 163,906