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Debt
 12 Months Ended
Dec. 31, 2021
Debt Disclosure [Abstract]  
Debt Debt
The Company's debt consists of the following:
(in thousands)December 31, 2021December 31, 2020
Senior Secured Term Loan due 2026:
Principal$400,000 $400,000 
Less: debt discount (1)
(6,074)(7,434)
Less: deferred financing (1)
(4,569)(5,592)
Net carrying value of the Senior Secured Term Loan$389,357 $386,974 
Convertible Notes:
Principal$— $2,825 
Less: debt discount (1)
— (518)
Less: deferred financing (1)
— (27)
Net carrying value of the Convertible Notes$— $2,280 
Net carrying value of Long-term debt$389,357 $389,254 
_____________________________
(1) Included in the Consolidated Balance Sheets within long-term debt and amortized to interest expense over the remaining life of the Convertible Notes and Senior Secured Term Loan using the effective interest rate method.
Senior Secured Term Loan due 2026
In July 2020, the Company entered into a definitive agreement for a $400 million credit facility with Hayfin Capital Management (“Senior Secured Term Loan due 2026”) with an interest rate equal to 3-month LIBOR, subject to a 1% floor, plus 6.5% per annum and requires interest-only payments until mid-2024. The Senior Secured Term Loan due 2026 will be repaid in nine quarterly payments of $44.4 million, starting on July 2024 with the final balance due on the maturity date in July 2026. This transaction resulted in net proceeds of $385.9 million, after deducting fees and expenses. There were no warrants or equity conversion features associated with the Senior Secured Term Loan due 2026. The Company used the proceeds to voluntarily settle the Senior Secured Term Loan with BioPharma Credit PLC, which included the $150 million principal, $1.1 million accrued interest, and $5.2 million in early settlement premiums. As a result of this early extinguishment, the Company recognized a loss on extinguishment of debt of $7.3 million in the Consolidated Statements of Operations.
The Senior Secured Term Loan due 2026 is subject to mandatory prepayment provisions that require prepayment upon a change of control, the incurrence of certain additional indebtedness, asset sale, or an event of loss, subject to certain conditions set forth in the Senior Secured Term Loan due 2026. The Company may prepay the Senior Secured Term Loan due 2026 in whole, at its option at any time. Any prepayment of the Senior Secured Term Loan due 2026 is subject to certain make-whole premiums and prepayment premiums, the latter of which decrease until the fourth anniversary of the transaction date at which point no prepayment penalty shall exist. The obligations under the Senior Secured Term Loan due 2026 are secured by a first lien security interest in certain assets of the Company. The Senior Secured Term Loan due 2026 contains certain customary representations and warranties, affirmative and negative covenants and events of default applicable to the Company. The Senior Secured Term Loan due 2026 also contains a minimum liquidity covenant of $75 million, and an incremental minimum consolidated revenue covenant, measured as of the previous four consecutive fiscal quarters. The minimum consolidated revenue covenant ranges from $140 million, beginning March 31, 2021, and peaks at $225 million by June 30, 2023, continuing at that level until the Senior Secured Term Loan due 2026 is repaid. If an event of default occurs and is continuing, Hayfin Capital Management may declare all amounts outstanding under the Senior Secured Term Loan due 2026 to be immediately due and payable.
Convertible Notes
In December 2016, the Company issued at par value $250 million aggregate principal amount of Convertible Notes, which included the exercise in full of the $25 million over-allotment option granted to the initial purchasers of the Convertible Notes in a private offering to qualified institutional buyers pursuant to Rule 144A under the Securities Act (the "Note Offering"). Interest was payable semiannually on June 15 and December 15 of each year, beginning on June 15, 2017. The Convertible Notes would mature on December 15, 2023, unless earlier repurchased, redeemed, or converted in accordance with their terms. The Convertible Notes were convertible at the option of the Holders, under certain circumstances and during certain periods, into cash, shares of the Company’s common stock or a combination thereof. The net proceeds from the Note Offering were $243.0 million, after deducting fees and expenses. In addition, the Company used approximately $13.5 million of the net proceeds from the issuance of the Convertible Notes to pay the cost of the capped call transactions ("Capped Call Confirmations") that the Company entered into in connection with the issuance of the Convertible Notes. In accounting for the issuance of the Convertible Notes, the Company separated the Convertible Notes into liability and equity components based on their relative values. The Convertible Notes were initially convertible into approximately 40.8 million shares of the Company’s common stock under certain circumstances prior to maturity at a conversion rate of 163.3987 shares per $1,000 principal amount of Convertible Notes, which represented a conversion price of approximately $6.12 per share of common stock, subject to adjustment under certain conditions.
During the first and second quarters of 2019, the Company entered into separate, privately negotiated Exchange Agreements with a limited number of Holders. Under the terms of the Exchange Agreements, the limited number of Holders agreed to exchange an aggregate principal amount of $247.2 million of Convertible Notes held by them in exchange for an aggregate of approximately 44.0 million shares of Company common stock, par value $0.01 per share. In addition, pursuant to the Exchange Agreements, the Company made aggregate cash payments of $1.3 million to the limited number of Holders to satisfy accrued and unpaid interest to the closing date of the transactions, along with cash in lieu of fractional shares. These transactions resulted in $215.0 million in additional paid-in-capital and common stock of $0.4 million on the Consolidated Balance Sheets as of December 31, 2019. Additionally, the Company recognized a loss on the exchange of debt of $40.6 million on the Consolidated Statements of Operations during the year ended December 31, 2019.
During the first and second quarter of 2019, the Company terminated the Capped Call Confirmations related to the exchange of the Convertible Notes for proceeds of $19.9 million.
During the first and third quarters of 2021, the Company entered into separate, privately negotiated exchange agreements with a limited number of Holders. Under the terms of the Exchange Agreements, the Holders agreed to exchange the remaining aggregate principal amount of $2.8 million of Convertible Notes held by them in exchange for an aggregate of approximately 472,356 shares of Company common stock, par value $0.01 per share. This transaction resulted in $2.7 million in additional paid-in-capital and common stock of five thousand dollars on the Consolidated Balance Sheets as of December 31, 2021. Additionally, the Company recognized a net loss from extinguishment of debt of $0.3 million in the Consolidated Statements of Operations for the year ended December 31, 2021.
Interest Expense
The following table sets forth interest expense recognized related to the Company's debt for the years ended December 31, 2021 and 2020 respectively:
(in thousands, except interest rate amounts)December 31, 2021December 31, 2020
Contractual interest expense$30,473 $20,933 
Amortization of debt discount$1,462 $1,267 
Amortization of deferred financing$1,028 $527 
Effective interest rate of the liability component, Convertible Notes— %10.6 %
Effective interest rate of the liability component, Senior Secured Term Loan due 20268.4 %8.4 %