Stock-Based Compensation - Narrative (Details)
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3 Months Ended |
12 Months Ended |
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Apr. 29, 2020
shares
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Oct. 07, 2016
shares
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Dec. 31, 2020
USD ($)
shares
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Dec. 31, 2020
USD ($)
$ / shares
shares
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Dec. 31, 2019
USD ($)
$ / shares
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Dec. 31, 2018
USD ($)
$ / shares
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May 01, 2019
shares
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
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| Granted (in dollars per share) | $ / shares |
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$ 6.68
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$ 22.35
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| Fair value of stock options vested |
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$ 5,700,000
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$ 10,200,000
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$ 8,800,000
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| Intrinsic value of stock options exercised |
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$ 0
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$ 200,000
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| Share-based Payment Arrangement, Plan Modification, Incremental Cost |
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$ 2,700,000
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| Restricted stock awards |
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
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| Granted (in dollars per share) | $ / shares |
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$ 1.12
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$ 6.59
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$ 18.11
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| Fair value of vested restricted stock awards |
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$ 17,400,000
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$ 12,000,000.0
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$ 6,600,000
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| Unrecognized compensation costs |
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$ 21,000,000.0
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$ 21,000,000.0
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| Unrecognized compensation costs, period for recognition |
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1 year 10 months 24 days
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| Granted (in shares) | shares |
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10,245,500
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| Stock option awards |
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
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| Unrecognized compensation costs, period for recognition |
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1 year 1 month 6 days
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| Intrinsic value of stock options exercised |
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$ 0
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| Unrecognized compensation costs |
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900,000
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$ 900,000
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| Performance Shares |
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
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| Granted (in dollars per share) | $ / shares |
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$ 0
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| Unrecognized compensation costs, period for recognition |
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1 year 2 months 12 days
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| Unrecognized compensation costs |
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2,400,000
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$ 2,400,000
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| Share-based compensation requisite service period |
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3 years
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| Cash-settled Restricted Stock [Member] |
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
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| Unrecognized compensation costs |
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$ 5,500,000
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$ 5,500,000
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| Unrecognized compensation costs, period for recognition |
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1 year 9 months 18 days
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| Granted (in shares) | shares |
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5,500,000
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| Share-based compensation requisite service period |
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3 years
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| Cash-settled Restricted Stock [Member] | Maximum |
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
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| Share-Based Compensation Arrangement By Share-Based Payment Award, Award Rights, Percentage Return |
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4
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| Cash-settled Restricted Stock [Member] | Minimum |
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
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| Share-Based Compensation Arrangement By Share-Based Payment Award, Award Rights, Percentage Return |
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0.25
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| Cash-settled Performance Stock [Member] |
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
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| Unrecognized compensation costs |
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$ 10,600,000
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$ 10,600,000
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| Unrecognized compensation costs, period for recognition |
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2 years 6 months
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| Granted (in shares) | shares |
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5,500,000
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| Share-based compensation requisite service period |
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3 years
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| 2019 Employee Stock Purchase Plan [Member] |
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
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| Shares available for issuance under LTIP (in shares) | shares |
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2,000,000
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| Shares available for future grants (in shares) | shares |
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1,837,381
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1,837,381
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| 2016 Long Term Incentive Plan |
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
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| Shares available for future grants (in shares) | shares |
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6,579,226
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6,579,226
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| Share-based Compensation Arrangement by Share-based Payment Award, Number of Additional Shares Authorized | shares |
8,250,000
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| 2016 Long Term Incentive Plan | Common Class A |
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
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| Shares available for issuance under LTIP (in shares) | shares |
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16,500,000
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| 2016 Long Term Incentive Plan | Stock option awards | Common Class A |
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
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| Option expiration period |
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10 years
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| Vesting period |
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3 years
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| Officer | Restricted stock awards |
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
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| Share-based compensation requisite service period |
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3 years
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| Director | Restricted stock awards |
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
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| Vesting period |
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1 year
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