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DEBT AND FINANCING ARRANGEMENTS
 3 Months Ended
Mar. 31, 2022
Debt Disclosure [Abstract]  
DEBT AND FINANCING ARRANGEMENTS DEBT AND FINANCING ARRANGEMENTS
2020 Convertible Senior Notes
On September 22, 2020, we issued convertible senior notes with an aggregate principal amount of $230.0 million bearing an interest rate of 1.00% due in 2025 (the “Notes”), including the exercise in full of the initial purchasers’ option to purchase up to an additional $30.0 million principal amount of the Notes. The Notes were issued pursuant to an indenture, dated September 22, 2020 (the “Indenture”), between us and U.S. Bank National Association, as trustee.
The net proceeds from this offering were $222.7 million, after deducting the initial purchasers’ discounts and commissions and the offering expenses payable by us. We used $26.5 million of the net proceeds to pay the cost of the capped call transactions described below.
The Notes are general senior, unsecured obligations and will mature on September 15, 2025, unless earlier converted, redeemed or repurchased. The Notes bear interest at a rate of 1.00% per year, payable semiannually in arrears on March 15 and September 15 of each year, which began on March 15, 2021. The Notes are convertible at the option of the holders at any time prior to the close of business on the business day immediately preceding June 15, 2025, only under the following circumstances: (1) during any calendar quarter commencing after the calendar quarter ending on December 31, 2020 (and only during such calendar quarter), if the last reported sale price of our common stock, for at least 20 trading days (whether or not consecutive) during a period of 30 consecutive trading days ending on, and including, the last trading day of the immediately preceding calendar quarter is greater than or equal to 130% of the conversion price for the Notes on each applicable trading day; (2) during the five business day period after any ten consecutive trading day period (the “measurement period”) in which the trading price (as defined in the Indenture) per $1,000 principal amount of the Notes for each trading day of the measurement period was less than 98% of the product of the last reported sale price of common stock and the conversion rate for the Notes on each such trading day; (3) if we call such Notes for redemption, at any time prior to the close of business on the scheduled trading day immediately preceding the redemption date; or (4) upon the occurrence of specified corporate events as set forth in the Indenture. The closing trading price of our common stock was not in excess of 130% of the conversion price for more than 20 trading days during the preceding 30 consecutive trading days as of March 31, 2022, thus the Notes are not convertible at the option of the holders during the quarter ending June 30, 2022. The Notes may be convertible thereafter if one or more of the conversion conditions is satisfied during future measurement periods. On or after June 15, 2025 until the close of business on the second scheduled trading day immediately preceding the maturity date, holders of the Notes may convert all or any portion of their Notes at any time, regardless of the foregoing circumstances. Upon conversion, we may satisfy our conversion obligation by paying and/or delivering, as the case may be, cash, shares of common stock or a combination of cash and shares of common stock, at our election, in the manner and subject to the terms and conditions provided in the Indenture. We currently intend to settle the principal amount of the Notes with cash.
The conversion rate for the Notes will initially be 11.7457 shares of common stock per $1,000 principal amount of Notes, which is equivalent to an initial conversion price of approximately $85.14 per share of common stock. The conversion rate for the Notes is subject to adjustment under certain circumstances in accordance with the terms of the Indenture. In addition, following certain corporate events that occur prior to the maturity date of the Notes or if we deliver a notice of redemption in respect of the Notes, we will, in certain circumstances, increase the conversion rate of the Notes for a holder who elects to convert its Notes in connection with such a corporate event or convert its notes called for redemption during the related redemption period (as defined in the Indenture), as the case may be.
We may not redeem the Notes prior to September 20, 2023. We may redeem for cash all or any portion of the Notes, at our option, on or after September 20, 2023 and prior to the 36th scheduled trading day immediately preceding the maturity date, if the last reported sale price of our common stock has been at least 130% of the conversion price for the Notes then in effect for at least 20 trading days (whether or not consecutive) during any 30 consecutive trading day period (including the last trading day of such period) ending on, and including, the trading day immediately preceding the date on which we provide notice of redemption at a redemption price equal to 100% of the principal amount of the Notes to be redeemed, plus accrued and unpaid interest to, but excluding, the redemption date. No sinking fund is provided for the Notes. If we elect to redeem less than all of the Notes, at least $75.0 million aggregate principal amount of Notes must be outstanding and not subject to redemption as of the relevant redemption notice date.
If we undergo a Fundamental Change (as defined in the Indenture), then, except as set forth in the Indenture, holders may require, subject to certain exceptions, us to repurchase for cash all or any portion of their Notes at a fundamental change repurchase price equal to 100% of the principal amount of the Notes to be repurchased, plus accrued and unpaid interest to, but excluding, the fundamental change repurchase date.
The Indenture includes customary covenants and sets forth certain events of default after which the Notes may be declared immediately due and payable and sets forth certain types of bankruptcy or insolvency events of default involving us after which the Notes become automatically due and payable. The following events are considered “events of default” under the Indenture:
•default in any payment of interest on any Note when due and payable and the default continues for a period of 30 days;
•default in the payment of principal of any Note when due and payable at its stated maturity, upon optional redemption, upon any required repurchase, upon declaration of acceleration or otherwise;
•failure by us to comply with our obligation to convert the Notes in accordance with the Indenture upon exercise of a holder’s conversion right, and such failure continues for three business days;
•failure by us to give a fundamental change notice, notice of a make-whole fundamental change or notice of a specified corporate event, in each case when due and such failure continues for one business day;
•failure by us to comply with its obligations in respect of any consolidation, merger or sale of assets;    
•failure by us to comply with any of our other agreements in the Notes or the Indenture for 60 days after written notice of such failure from the trustee or the holders of at least 25% in principal amount of the Notes then outstanding;
•default by us or any of our significant subsidiaries (as defined in the Indenture) with respect to any mortgage, agreement or other instrument under which there may be outstanding, or by which there may be secured or evidenced, any indebtedness for money borrowed in excess of $35,000,000 (or its foreign currency equivalent), in the aggregate of us and/or any such significant subsidiary, whether such indebtedness now exists or shall hereafter be created, (i) resulting in such indebtedness becoming or being declared due and payable prior to its stated maturity date or (ii) constituting a failure to pay the principal of any such indebtedness when due and payable (after the expiration of all applicable grace periods) at its stated maturity, upon required repurchase, upon declaration of acceleration or otherwise, and in the cases of clauses (i) and (ii), such acceleration shall not have been rescinded or annulled or such failure to pay or default shall not have been cured or waived, or such indebtedness is not paid or discharged, as the case may be, within 30 days after written notice to us by the trustee or to us and the trustee by holders of at least 25% in aggregate principal amount of the Notes then outstanding in accordance with the Indenture; and
•certain events of bankruptcy, insolvency or reorganization of us or any of our significant subsidiaries.
If certain bankruptcy and insolvency-related events of default with respect to us occur, the principal of, and accrued and unpaid interest on, all of the then outstanding Notes shall automatically become due and payable. If an event of default with respect to the Notes, other than certain bankruptcy and insolvency-related events of default with respect to us, occurs and is continuing, the trustee by notice to us or the holders of at least 25% in principal amount of the outstanding Notes by notice to us and the trustee, may, and the trustee at the request of such holders shall, declare the principal of, and accrued and unpaid interest on, all of the then-outstanding Notes to be due and payable. Notwithstanding the foregoing, the Indenture provides that, to the extent we so elect, the sole remedy for an event of default relating to certain failures by us to comply with certain reporting covenants in the Indenture will, for the first 365 days after the occurrence of such event of default, consist exclusively of the right to receive additional interest on the Notes at a rate equal to 0.25% per annum of the principal amount of the Notes outstanding for each day during the first 180 days after the occurrence of such an event of default and 0.50% per annum of the principal amount of the Notes outstanding from the 181st day to, and including, the 365th day following the occurrence of such event of default, as long as such event of default is continuing (in addition to any additional interest that may accrue as a result of a registration default (as set forth in the Indenture).
The Indenture provides that we shall not consolidate with or merge with or into, or sell, convey, transfer or lease all or substantially all of the consolidated properties and assets of our subsidiaries, taken as a whole, to, another person (other than any such sale, conveyance, transfer or lease to one or more of our direct or indirect wholly owned subsidiaries), unless: (i) the resulting, surviving or transferee person (if not us) is a corporation organized and existing under the laws of the United States of America, any State thereof or the District of Columbia, and such corporation (if not us) expressly assumes by supplemental indenture all of our obligations under the Notes and the Indenture; and (ii) immediately after giving effect to such transaction, no default or event of default has occurred and is continuing under the Indenture.
The Notes were historically accounted for in accordance with FASB ASC Subtopic 470-20, Debt with Conversion and Other Options. Pursuant to ASC Subtopic 470-20, issuers of certain convertible debt instruments, such as the Notes, that have a net settlement feature and may be settled wholly or partially in cash upon conversion are required to separately account for the liability (debt) and equity (conversion option) components of the instrument. The carrying amount of the liability component of the instrument was computed using a discount rate of 6.50%, which was determined by estimating the fair value of a similar liability without the conversion option. The amount of the equity component is then calculated by deducting the fair value of the liability component from the principal amount of the instrument. The difference between the principal amount and the liability component represents a debt discount that is amortized to interest expense over the respective term of the Notes using the effective interest rate method. The equity component is not remeasured as long as it continues to meet the conditions for equity classification. In accounting for the issuance costs related to the Notes, the allocation of issuance costs incurred between the liability and equity components was based on their relative values.
On January 1, 2022, we adopted ASU 2020-06, Debt—Debt with Conversion Options (“Subtopic 470-20”) and Derivatives and Hedging—Contracts in Entity’s Own Equity (“Subtopic 815-40”), which removes the requirement to bifurcate the Notes into a separate liability and equity component, using the modified retrospective method which allowed for a cumulative-effect adjustment to the opening balance sheet without restating prior periods. As we did not elect the fair value option in the process, the Notes, net of issuance costs, are accounted for as a single liability measured at amortized cost. Upon adoption, we recorded a decrease in accumulated deficit of $11.3 million, an increase to convertible senior notes of $40.2 million and a decrease to additional paid in capital of $51.5 million.
The net carrying amount of the liability component of the Notes was as follows (in thousands), giving effect to the adoption of ASU 2020-06 on January 1, 2022:

December 31, 2021March 31, 2022
Principal$230,000 $230,000 
Minus: Unamortized debt discount(41,098)— 
Minus: Unamortized issuance costs(4,504)(5,052)
Net carrying amount of the liability component$184,398 $224,948 

Prior to the adoption of ASU 2020-06, the net carrying amount of the equity component of the Notes was as follows (in thousands):

December 31, 2021
Proceeds allocated to the conversion options (debt discount)$53,096 
Minus: Issuance costs(1,680)
Net carrying amount of the equity component$51,416 
Interest expense recognized related to the Notes is as follows (in thousands):
Three Months Ended
March 31,
20212022
Contractual interest expense (due in cash)$575 $575 
Amortization of debt discount2,321 — 
Amortization of debt issuance costs207 365 
Total interest expense related to the Notes$3,103 $940 
Effective interest rate5.40 %1.64 %
Capped Call Transactions
In connection with the issuance of the Notes, we entered into privately negotiated capped call transactions (the "Capped Calls") with an affiliate of one of the initial Note purchasers and certain other financial institutions. The Capped Calls are intended to reduce potential dilution to our common stock upon any conversion of Notes and/or offset any cash payments we are required to make in excess of the principal amount of converted Notes, as the case may be. The Capped Calls are recorded in stockholders' equity and are not accounted for as derivatives. The cost of $26.5 million incurred to purchase the Capped Calls was recorded as a reduction to additional paid-in capital in the accompanying condensed consolidated balance sheet.
The Capped Calls each have an initial strike price of $85.14 per share, subject to certain adjustments, which corresponds to the initial conversion price of the Notes. The Capped Calls have an initial cap price of $128.51 per share, subject to certain adjustments.
2018 Loan Facility
In April 2022, we amended our loan facility with Pacific Western Bank (the "2018 Loan Facility") to increase the capacity of our asset-backed revolving line of credit (the "2018 Line of Credit") from $50.0 million to $60.0 million upon the completion of the bank's audit and an option to increase to $75.0 million upon syndication. This amendment also extended the maturity date of the 2018 Loan Facility from December 31, 2022 to April 29, 2024. As part of this amendment, the former cash covenant, as described below, was removed and was replaced with a requirement to maintain a minimum level of adjusted contribution and a $25.0 million adjusted cash minimum.
In December 2020, we amended our 2018 Loan Facility to increase the capacity of our 2018 Line of Credit from $40.0 million to $50.0 million. This amendment also extended the maturity date of the 2018 Loan Facility from May 14, 2021 to December 31, 2022. Prior to the December 2020 amendment, the 2018 Loan Facility contained moving trailing 12-month billing covenants, which ranged from $210.0 million to $255.0 million, during the term of the facility. The former terms of the 2018 Loan Facility also required us to maintain a total cash balance plus liquidity under the 2018 Line of Credit of not less than $5.0 million. Effective with the December 2020 amendment, the former billings and liquidity covenants were removed and were replaced with a requirement to maintain a cash to funded senior debt ratio under the 2018 Line of Credit of 1.25:1.00.
We have made no borrowings or repayments on the 2018 Line of Credit during the three months ended March 31, 2022. As of March 31, 2022, we had no outstanding borrowings on our 2018 Line of Credit and had $50.0 million of unused borrowings available. Under the terms of the 2018 Line of Credit, we are able to borrow up to the lesser of $50.0 million or 85% of the amount of our eligible accounts receivable. Interest on advances bears an interest rate equal to the prime rate minus 0.50%, or 3.00% as of March 31, 2022. In addition, we are required to pay an unused line fee of 0.15% per annum on the average daily unused amount of the $50.0 million revolving commitment. We believe that we are compliant with all financial covenants as of March 31, 2022.