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Long‑Term Debt | 6 Months Ended
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Jun. 30, 2023
Debt Disclosure [Abstract] |
Long-Term Debt | Long-Term Debt Long‑term debt consists of the following:
| June 30, 2023 |  | December 31, 2022
Credit facility: |  |  |
Revolving loan facility due November 2025 | $ | 201,245 |  |  | $ | 345,597 |
Term loan due November 2025 | 192,500 |  |  | 195,000 |
Convertible senior notes due January 2026 (the “2026 Notes”) | 687,830 |  |  | 687,830 |
Convertible senior notes due July 2027 (the “2027 Notes”) | 575,000 |  |  | 575,000 |
Unamortized debt issuance costs | (19,592) |  |  | (22,731) |
Total debt | 1,636,983 |  |  | 1,780,696 |
Less: Current portion of long-term debt | (7,500) |  |  | (5,000) |
Long-term debt | $ | 1,629,483 |  |  | $ | 1,775,696 |
Credit Facility The Company is party to a Credit Agreement dated December 19, 2017 (as amended from time to time), which provides for an $850,000 senior secured revolving loan facility that matures on November 15, 2025 (the “Credit Facility”). The Credit Facility also provides up to $50,000 of letters of credit and other borrowings subject to availability, including an $85,000 U.S. dollar swingline sub‑facility and a $200,000 incremental “accordion” sub‑facility. Debt issuance costs are amortized to interest expense through the maturity date. Under the Credit Facility, the Company has a $200,000 senior secured term loan with a maturity of November 15, 2025 (the “Term Loan”). The Term Loan requires principal repayment at the end of each calendar quarter. Beginning with March 31, 2022 and ending with December 31, 2023, the Company is required to repay $1,250 per quarter. Beginning with March 31, 2024 and ending with the last such date prior to the maturity date, the Company is required to repay $2,500 per quarter. The Company had $150 of letters of credit and surety bonds outstanding as of June 30, 2023 and December 31, 2022 under the Credit Facility. As of June 30, 2023 and December 31, 2022, the Company had $648,605 and $504,253, respectively, available under the Credit Facility. Effective June 23, 2023, the Company amended the Credit Facility to replace the referenced interest rate based on LIBOR with the Secured Overnight Financing Rate (“SOFR”). Revolving loan borrowings under the Credit Facility bear interest at variable rates that reset every one, three, or six months depending on the period selected by the Company. Under the Term SOFR elections, revolving loan borrowings bear an interest rate of the applicable term SOFR rate plus 10 basis points (“bps”), plus a spread ranging from 125 bps to 225 bps as determined by the Company’s net leverage ratio. Under the non‑Term SOFR elections, revolving loan borrowings bear a base interest rate of the highest of (i) the prime rate, (ii) the overnight bank funding effective rate plus 50 bps, or (iii) the applicable term SOFR rate plus 10 bps, plus a spread ranging from 25 bps to 125 bps as determined by the Company’s net leverage ratio. Swingline borrowings under the Credit Facility bear interest that resets daily. Interest on U.S. dollar swingline borrowings bear an interest rate of the daily simple SOFR rate plus 3.5 bps, plus a spread ranging from 125 bps to 225 bps as determined by the Company’s net leverage ratio. The Company cannot make optional currency swingline borrowings without the consent of the applicable swingline lender. Term loan borrowings under the Credit Facility bear interest at variable rates that reset every one, three, or six months depending on the period selected by the Company. Under the Term SOFR elections, term loan borrowings bear an interest rate of the applicable term SOFR rate plus 10 bps, plus a spread ranging from 100 bps to 200 bps as determined by the Company’s net leverage ratio. Under the non‑Term SOFR elections, term loan borrowings bear a base interest rate of the highest of (i) the prime rate, (ii) the overnight bank funding effective rate plus 50 bps, or (iii) the applicable term SOFR rate plus 10 bps, plus a spread ranging from 0 bps to 100 bps as determined by the Company’s net leverage ratio. In addition, a commitment fee for the unused Credit Facility ranges from 20 bps to 30 bps as determined by the Company’s net leverage ratio. Borrowings under the Credit Facility are guaranteed by all of the Company’s material first tier domestic subsidiaries and are secured by a first priority security interest in substantially all of the Company’s and the guarantors’ U.S. assets and 65% of the stock of their directly owned foreign subsidiaries. The agreement governing the Credit Facility contains customary positive and negative covenants, including restrictions on our ability to pay dividends and make other restricted payments, as well as events of default, including, without limitation, payment defaults, breaches of representations and warranties, covenants defaults, cross-defaults to certain other indebtedness in excess of $50,000, certain events of bankruptcy and insolvency, judgment defaults in excess of $10,000, failure of any security document supporting the Credit Facility to be in full force and effect, and a change of control. The Credit Facility also contains customary financial covenants, including maximum net leverage ratio. As of June 30, 2023 and December 31, 2022, the Company was in compliance with all covenants in its Credit Facility. Voluntary prepayments of amounts outstanding under the Credit Facility, in whole or in part, are permitted at any time, so long as the Company gives notice as required by the Credit Facility. However, if prepayment is made with respect to a SOFR‑based loan and the prepayment is made on a date other than an interest payment date, the Company is subject to customary breakage costs. Convertible Senior Notes As of June 30, 2023 and December 31, 2022, the Company was in compliance with all covenants in the 2026 Notes and 2027 Notes, and none of the conditions of the 2026 Notes or 2027 Notes to early convert had been met. Derivative Arrangements The Company records derivative instruments as an asset or liability measured at fair value and depending on the nature of the hedge, the corresponding changes in the fair value of these instruments are recorded in the consolidated statements of operations or comprehensive income. If the derivative is determined to be a hedge, changes in the fair value of the derivative are offset against the change in the fair value of the hedged assets or liabilities through the consolidated statements of operations or recognized in Other comprehensive income (loss), net of taxes until the hedged item is recognized in the consolidated statements of operations. The ineffective portion of a derivative’s change in fair value is recognized in earnings. Also, changes in the entire fair value of a derivative that is not designated as a hedge are recognized in earnings. Effective on April 2, 2020, the Company entered into an interest rate swap with a notional amount of $200,000 and a ten‑year term to reduce the interest rate risk associated with the Credit Facility. Effective on June 26, 2023, the Company amended the interest rate swap agreement to replace the LIBOR rate to SOFR under the ISDA Fallback Protocols included within the agreement. Subsequent to the amendment, the Company will continue to pay a fixed interest rate of 72.9 bps, and will receive a floating interest rate equal to daily SOFR plus an ARRC spread adjustment of 11.448 bps. The interest rate swap is not designated as a hedging instrument for accounting purposes. The Company accounts for the interest rate swap as either an asset or a liability on the consolidated balance sheets and carries the derivative at fair value (see Note 17). Gain (loss) from the change in fair value and payments related to the interest rate swap are recognized in Other income (expense), net in the consolidated statements of operations (see Note 20). The bank counterparty to the derivative potentially exposes the Company to credit-related losses in the event of nonperformance. To mitigate that risk, the Company only contracts with counterparties who meet the Company’s minimum requirements under its counterparty risk assessment process. The Company monitors counterparty risk on at least a quarterly basis and adjusts its exposure as necessary. The Company does not enter into derivative instrument transactions for trading or speculative purposes. Interest Expense, Net Interest expense, net consists of the following:
| Three Months Ended |  | Six Months Ended
| June 30, |  | June 30,
| 2023 |  | 2022 |  | 2023 |  | 2022
Contractual interest expense | $ | (9,364) |  |  | $ | (5,700) |  |  | $ | (18,674) |  |  | $ | (9,747) |
Amortization of deferred debt issuance costs | (1,823) |  |  | (1,868) |  |  | (3,646) |  |  | (3,646) |
Other interest income (expense) | 1,193 |  |  | (153) |  |  | 1,005 |  |  | (1,158) |
Interest income | 510 |  |  | 82 |  |  | 739 |  |  | 164 |
Interest expense, net | $ | (9,484) |  |  | $ | (7,639) |  |  | $ | (20,576) |  |  | $ | (14,387) |
The weighted average interest rate on borrowings under the Credit Facility were 7.14% and 2.89% for the three months ended June 30, 2023 and 2022, respectively, and 6.89% and 2.62% for the six months ended June 30, 2023 and 2022, respectively.

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