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v3.20.2

Indebtedness - Additional Information (Details) |  |  | 9 Months Ended
--- | --- | --- | ---
May 21, 2020 USD ($) day $ / shares | May 02, 2019 USD ($) Tranche | Sep. 30, 2020 USD ($) | Sep. 30, 2019 USD ($)
Debt Instrument [Line Items] |  |  |  |
Amount funded |  |  | $ 0 | $ 28,222,000
Proceeds from issuance of convertible debt, net |  |  | 193,596,000 | $ 0
Term Loan | Credit Facility |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Maximum borrowing capacity |  | $ 150,000,000.0 |  |
Amount funded |  | 30,000,000.0 |  |
Remaining borrowing capacity |  | $ 120,000,000.0 |  |
Number of additional tranches | Tranche |  | 2 |  |
Percentage of exit fee on amount borrowed on final repayment |  | 1.75% |  |
Percentage of exit fee on amount borrowed on partial prepayment |  | 1.75% |  |
Debt covenant minimum unrestricted cash percentage |  | 25.00% |  |
Debt instrument, default trigger amount |  |  | $ 2,500,000 |
Term Loan | Credit Facility | Prepayment Occurs through First Anniversary of Closing Date |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Percentage of prepayment fee |  | 3.00% |  |
Term Loan | Credit Facility | First Anniversary of Closing Date through Second Anniversary of Closing Date |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Percentage of prepayment fee |  | 2.00% |  |
Term Loan | Credit Facility | Second Anniversary of Closing Date and Prior to Jan 1, 2025 |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Percentage of prepayment fee |  | 1.00% |  |
Term Loan | Credit Facility | LIBOR |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Basis spread on variable rate |  | 7.00% |  |
Interest rate |  | 2.00% |  |
Term Loan | Credit Facility | MidCap Financial Trust |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Basis spread on variable rate |  |  | 3.00% |
Term Loan | Tranche One | Credit Facility |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Remaining borrowing capacity |  | $ 60,000,000.0 |  |
Term Loan | Tranche Two | Credit Facility |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Remaining borrowing capacity |  | $ 60,000,000.0 |  |
2027 Notes |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Interest rate | 5.00% |  | 5.00% |
Debt instrument aggregate principal amount | $ 200,000,000.0 |  |  |
Proceeds from issuance of convertible debt, net | $ 193,600,000 |  |  |
Convertible notes, initial conversion price (in dollars per share) | $ / shares | $ 16.23 |  |  |
Debt instrument conversion ratio | 0.0616 |  |  |
Convertible notes, percentage of conversion price | 130.00% |  |  |
Debt conversion, converted Instrument | $ 1,000 |  |  |
Convertible notes, redemption percentage | 100.00% |  |  |
Percentage of repurchase price is equal to principal amount of convertible notes | 100.00% |  |  |
Percentage in aggregate principal amount (not less than) | 0.25 |  |  |
Carrying amount of the equity component | $ 53,000,000.0 |  |  |
Convertible notes, effective interest rate | 11.17% |  |  |
Debt issuance costs | $ 400,000 |  |  |
Amortization of debt issuance cost | $ 300,000 |  |  |
2027 Notes | Maximum |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Convertible notes, percentage of last reported sale price of common stock | 98.00% |  |  |
2027 Notes | 130% Applicable Conversion Price | Minimum |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Convertible notes, consecutive trading days | day | 20 |  |  |
2027 Notes | 130% Applicable Conversion Price | Maximum |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Convertible notes, consecutive trading days | day | 30 |  |  |
2027 Notes | 98% Applicable Conversion Price | Minimum |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Convertible notes, consecutive trading days | day | 5 |  |  |
2027 Notes | 98% Applicable Conversion Price | Maximum |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Convertible notes, consecutive trading days | day | 10 |  |  |

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