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Debt | 12 Months Ended
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Dec. 31, 2020
Debt Disclosure [Abstract] |
Debt | Debt On April 21, 2020, the Company entered into a $150.0 million five-year secured revolving credit agreement (“2020 Credit Agreement”) by and among the Company, the lenders party thereto (the “Lenders”) and JPMorgan Chase Bank, N.A., as the administrative agent (the “Administrative Agent”). JPMorgan Chase Bank, N.A. and Silicon Valley Bank acted as joint bookrunners and joint lead arrangers under the 2020 Credit Agreement. The 2020 Credit Agreement includes an accordion feature for up to an additional $200.0 million. Capitalized terms used below but not defined have the meanings ascribed to such terms in the 2020 Credit Agreement. Concurrently with the effectiveness of the 2020 Credit Agreement, on April 21, 2020, the Company terminated the SVB Credit Facilities (a revolving credit facility and a term loan facility with Silicon Valley Bank) and the Equipment Loan Facility (an equipment loan from Structural Capital), and incurred an aggregate of $1.2 million of termination, prepayment, and related fees in connection with such terminations. Amounts available under the 2020 Credit Agreement are for working capital needs, for general corporate purposes and to refinance certain existing indebtedness, as the Company deems necessary. Borrowings under the 2020 Credit Agreement will bear interest, at the Company’s option, calculated according to an Alternate Base Rate or LIBO Rate, as the case may be, plus an applicable margin. The applicable margin for Alternate Base Rate loans will range from 1.25% to 1.75% per annum, and the applicable margin for LIBO Rate loans will range from 2.25% to 2.75% per annum, in each case, based on the Company’s total leverage ratio at the end of each quarter. The Company is required to pay an unused commitment fee of 0.375% per annum, which shall accrue at the applicable rate on the daily amount of the undrawn portion of the commitment of each Lender. Letters of credit issued under the 2020 Credit Agreement are subject to customary letter of credit fees. The Company’s obligations under the 2020 Credit Agreement are secured by substantially all of its assets, subject to customary exceptions set forth in the 2020 Credit Agreement. In addition, to the extent the Company forms or acquires any domestic subsidiaries, such domestic subsidiaries will be required to guarantee the Company’s obligations under the 2020 Credit Agreement and provide a security interest over substantially all of their assets. The 2020 Credit Agreement contains customary representations, warranties and covenants for a transaction of this type, including maintenance of (i) a maximum total leverage ratio of 3.00 to 1.00 and (ii) a minimum fixed charge coverage ratio of 1.25 to 1.00, in each case, tested on the last day of each fiscal quarter. The Company is permitted to declare and pay up to $10.0 million per year in dividends on its capital stock (and, subject to meeting certain leverage requirements and minimum liquidity thresholds, additional dividends), provided, among other things, no event of default exists or would result therefrom and the Company is in compliance with certain financial covenants contained in the 2020 Credit Agreement. The 2020 Credit Agreement also provides for customary events of default, including (among others) nonpayment, covenant defaults, breaches of representations or warranties, bankruptcy and insolvency events and a change of control. If an event of default occurs, the Administrative Agent shall, at the request of, or may, with the consent of, the required Lenders, declare the obligations under the 2020 Credit Agreement immediately due and payable and the commitments of the Lenders may be terminated. For certain events of default relating to insolvency, the commitments of the Lenders are automatically terminated and all outstanding obligations become due and payable. The revolving credit facility matures on April 21, 2025. The Company’s debt balances are detailed below:
|  |  | December 31,
(in thousands) |  |  | 2020 |  | 2019
Revolving credit facility |  |  | $ | 25,000 |  |  | $ | — |
Revolving credit line (SVB) |  |  | — |  |  | 6,000 |
Term loan facility |  |  | — |  |  | 20,000 |
Equipment financing loan |  |  | — |  |  | 5,000 |
Debt issuance costs |  |  | — |  |  | (431) |
Total debt outstanding |  |  | $ | 25,000 |  |  | $ | 30,569 |
Less: current portion of long-term debt |  |  | 25,000 |  |  | 11,000 |
Long-term debt |  |  | $ | — |  |  | $ | 19,569 |
The Company records debt issuance costs on the revolving credit facility in prepaid and other current assets, net in the accompanying consolidated balance sheet as of December 31, 2020. Debt issuance costs on the revolving credit line and term loan, net of amortization, were recorded as a reduction of carrying value of the debt in the accompanying consolidated balance sheet as of December 31, 2019. Debt issuance costs, net of amortization, totaled $1.1 million and $0.4 million as of December 31, 2020 and December 31, 2019, respectively. Debt issuance costs are amortized as interest expense over the term of the loan for which amortization of $0.3 million, $0.2 million and $0.1 million was recorded in the years ended December 31, 2020, 2019 and 2018, respectively. In the years ended December 31, 2020, 2019 and 2018, the Company incurred $2.1 million, $2.2 million and $0.9 million, respectively, in interest expense related to its bank credit facilities. In the years ended December 31, 2020, 2019 and 2018, the Company recorded $0.2 million, $0.6 million and $0.2 million, respectively, in interest expense related to the Equipment Loan Facility. As of December 31, 2020, the Company had outstanding borrowings of $25.0 million and had no excess availability under the revolving credit facility. The interest rate on outstanding borrowings at December 31, 2020 was 3.5%. The Company exceeded the maximum permitted total leverage ratio financial covenant in the 2020 Credit Agreement for the fiscal quarter and year ended December 31, 2020. Subsequent to the year ended December 31, 2020, on February 25, 2021, the Company paid down the outstanding borrowings and had no borrowings outstanding under the revolving credit facility. Subsequent to the year ended December 31, 2020, concurrent with the Company’s execution of the campus headquarters lease, as a security deposit, the Company delivered to the landlord a letter of credit under the revolving credit facility in the amount of $12.5 million. See Note 14. Amended and Restated Loan and Security Agreement As of December 31, 2019, the Company had $6.0 million and $20.0 million in borrowings on the revolving credit facility and term loan facility, respectively, with Silicon Valley Bank (collectively, the “SVB Credit Facilities”) and had no availability to borrow under these facilities. Concurrently with the effectiveness of the 2020 Credit Agreement, on April 21, 2020, the Company terminated the SVB Credit Facilities. The Company was in compliance with the financial covenants in the SVB Credit Facilities at the time of termination. Equipment Loan Facility The Company had $5.0 million in borrowings outstanding as of December 31, 2019 under the equipment loan facility with Structural Capital Investments II, LP, as Lender, and Ocean II, PLC, LLC, as collateral agent and administrative agent (the “Equipment Loan Facility”). Concurrently with the effectiveness of the 2020 Credit Agreement, on April 21, 2020, the Company terminated the Equipment Loan Facility.The Company was in compliance with the financial covenants contained in the Equipment Loan Facility at the time of termination. Stock Warrant Liability In connection with its financing arrangements, the Company issued warrants to purchase shares of its convertible preferred stock. For one of the financing arrangements, the Company issued warrants to purchase 121,694 shares of Series B convertible preferred stock at an exercise price of $1.07 per share. For a separate financing arrangement, the Company issued warrants to purchase 39,073 shares of Series E convertible preferred stock at an exercise price of $3.68 per share. In connection with the Company’s refinancing of its credit facilities with SVB, the Company issued to SVB and its affiliates warrants to purchase an aggregate of 60,002 shares of its common stock at an exercise price of $3.00 per share. Upon the closing of the IPO, the warrants exercisable for convertible preferred stock were automatically converted into warrants exercisable for a total of 160,767 shares of common stock at the same respective exercise price per share. Subsequent to the closing of the IPO, all outstanding warrants to purchase shares of common stock were cashless exercised and no warrants were outstanding as of December 31, 2020 and 2019. See Note 2 for further information on the warrant liabilities.

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- Definition The entire disclosure for information about short-term and long-term debt arrangements, which includes amounts of borrowings under each line of credit, note payable, commercial paper issue, bonds indenture, debenture issue, own-share lending arrangements and any other contractual agreement to repay funds, and about the underlying arrangements, rationale for a classification as long-term, including repayment terms, interest rates, collateral provided, restrictions on use of assets and activities, whether or not in compliance with debt covenants, and other matters important to users of the financial statements, such as the effects of refinancing and noncompliance with debt covenants. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -URI http://asc.fasb.org/topic&trid=2208564 + Details
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