Fair Value Measurements - Liabilities Measure at Fair Value Preferred Stock (Details) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Quoted Prices in Active Markets for Identical Assets (Level 1)
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative liability, fair value, gross liability	$ 13,946	$ 0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Other Current Liabilities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative liability, fair value, gross liability	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Other Noncurrent Liabilities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative liability, fair value, gross liability	13,946	0
Significant Other Observable Inputs (Level 2)
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative liability, fair value, gross liability	0	0
Significant Other Observable Inputs (Level 2) | Other Current Liabilities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative liability, fair value, gross liability	0	0
Significant Other Observable Inputs (Level 2) | Other Noncurrent Liabilities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative liability, fair value, gross liability	0	0
Significant Unobservable Inputs (Level 3)
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative liability, fair value, gross liability	1,510	3,117
Significant Unobservable Inputs (Level 3) | Other Current Liabilities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative liability, fair value, gross liability	0	2,453
Significant Unobservable Inputs (Level 3) | Other Noncurrent Liabilities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative liability, fair value, gross liability	$ 1,510	$ 664