Description of Business and Basis of Presentation - Basis of Presentation (Details) $ in Thousands	Jun. 14, 2019 shares	Dec. 31, 2020 USD ($) shares	Dec. 31, 2019 USD ($) shares	Jun. 15, 2019 shares
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Reverse stock split ratio	0.25
Common stock, shares authorized (in shares) | shares	175,000,000	300,000,000	300,000,000	300,000,000
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items]
Total assets		$ 7,107,398	$ 7,151,447
Liabilities		2,611,860	$ 2,723,612
Variable Interest Entity, Primary Beneficiary
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items]
Total assets		210,200
Liabilities		$ 209,700