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Senior Secured Credit Facility
 6 Months Ended
Jun. 30, 2022
Debt Disclosure [Abstract]  
Senior Secured Credit Facility Senior Secured Credit Facility
Long-term senior secured credit facility consisted of the following (in thousands):
June 30, 2022December 31, 2021
Term loan facility$324,625 $326,775 
Revolving credit facility68,000 — 
392,625 326,775 
Less discount and issuance costs
(21,206)(23,291)
Long-term portion, net of debt discount and issuance costs371,419 303,484 
Less current portion of credit facility(4,300)(4,300)
Long-term senior secured facility debt, net of current portion, debt discount and issuance costs$367,119 $299,184 

Senior Secured Credit Facility
On October 14, 2020, the Company entered into a senior secured credit facility, which was amended on February 23, 2021 (the “First Amendment”) and again on February 26, 2021 (the “Second Amendment”). The senior secured facility consisted originally of (i) a $575 million senior secured 7-year term loan facility (the “Term Loan Facility”) and (ii) a $150 million senior secured 5-year revolving credit facility (the “Revolving Credit Facility” and, together with the Term Loan Facility, the “Senior Secured Credit Facility”). The First Amendment, in the case of Eurocurrency borrowings, lowered the London interbank offered rate floor to 50 basis points from 100 basis points and lowered the applicable margin to 325 basis points from 400 basis points per annum. This resulted in the current rate on the Term Loan Facility decreasing to 3.75% down from 5% prior to the First Amendment. The Second Amendment increased the $150.0 million Revolving Credit Facility from $150.0 million to $200.0 million.

Revolving Credit Facility
Under the Revolving Credit Facility, the Company had $68.0 million and no outstanding balance as of June 30, 2022 and December 31, 2021, respectively, $35.3 million and $13.6 million in standby letters of credit at June 30, 2022 and December 31, 2021, respectively, and availability of $96.7 million and $186.4 million at June 30, 2022 and December 31, 2021, respectively. The Revolving Credit Facility pays interest depending on the contracted rate for the loan which is either for the Eurocurrency Rate Loans at LIBOR plus 3.25% and for Base Rate Loans at the higher of the Prime Rate, 1/2 of 1% above the Federal Funds Rate or the Eurocurrency rate for the Dollar deposits for one month Interest Period, after giving effect to any floor plus 1%, plus 2.25%.

Term Loan Facility
The Term Loan Facility had a balance of $324.6 million and $326.8 million as of June 30, 2022 and December 31, 2021, respectively. The balance of the Term Loan Facility is presented in the accompanying condensed consolidated balance sheets, net of debt discount and issuance costs of $21.2 million and $23.3 million as of June 30, 2022 and December 31, 2021, respectively. The debt discount and issuance costs are being amortized using the effective interest method and the rate as of June 30, 2022 is 6.03%. The Term Loan Facility has an annual excess cash flow calculation, for which the prescribed formula did not result in requiring the Company to make any advance principal payments for the six months ended June 30, 2022 and 2021.
Convertible Debt
Convertible debt consisted of the following (in thousands):
June 30, 2022December 31, 2021
1.00% Senior unsecured convertible notes
$425,000 $425,000 
Less: unamortized discount and issuance costs(12,192)(13,137)
1.00% Senior unsecured convertible notes, net (1)
$412,808 $411,863 
(1) Effective interest rate for the Convertible Notes as of June 30, 2022 and December 31, 2021 was 1.5%.

On December 3, 2021 and December 9, 2021, the Company completed a private offering of $375 million and $50 million over allotment, respectively, in aggregate principal amount of 1.00% Convertible Senior Notes due 2028 (the “Convertible Notes”), resulting in proceeds of $364.7 million and $48.6 million, respectively, after deducting the original issue discount of 2.75%. The Convertible Notes were issued pursuant to an indenture, dated December 3, 2021 (the “Indenture”), between the Company and U.S. Bank National Association, as trustee.

The Convertible Notes are senior unsecured obligations of the Company and will mature on December 1, 2028, unless earlier converted redeemed or repurchased. The Convertible Notes bear interest at a rate of 1.00% per year, payable semiannually in arrears on June 1 and December 1 of each year, beginning on June 1, 2022.

The Convertible Notes were not convertible during the six months ended June 30, 2022 and none have been converted to date. Also, given that the average market price of the Company’s common stock has not exceeded the exercise price since inception, there was no dilutive impact for the six months ended June 30, 2022.

Capped Calls

In connection with the issuances of the Convertible Notes, the Company paid $52.9 million, in aggregate, to enter into capped call option agreements to reduce the potential dilution to holders of the Company’s common stock after a conversion of the Convertible Notes. Specifically, upon the exercise of the capped call instruments issued pursuant to the agreements (the “Capped Calls”), the Company would receive shares of its common stock equal to approximately 17.8 million shares (a) multiplied by (i) the lower of $36.0200 or the then-current market price of its common stock, less (ii) the applicable exercise price, and (b) divided by the then-current market price of its common stock. The results of this formula are that the Company would receive more shares as the market price of its common stock exceeds the exercise price and approaches the cap, which was initially $36.0200 per share.

Consequently, if the Convertible Notes are converted, then the number of shares to be issued by the Company would be effectively partially offset by the shares of common stock received by the Company under the Capped Calls as they are exercised. The formula above would be adjusted in the event of certain specified extraordinary events affecting the Company, including a merger; a tender offer; nationalization, insolvency or delisting of the Company’s common stock; changes in law; failure to deliver; insolvency filing; stock splits, combinations, dividends, repurchases or similar events; or an announcement of certain of the preceding actions.
The Company can also elect to receive the equivalent value of cash in lieu of shares of common stock upon settlement, except in certain circumstances. The Capped Calls expire on December 1, 2028 and terminate upon the occurrence of certain extraordinary events such as a merger, tender offer, nationalization, insolvency, delisting, event of default, a change in law, failure to deliver, an announcement of certain of these events, or an early conversion of the Convertible Notes. Although intended to reduce the net number of shares of common stock issued after a conversion of the Convertible Notes, the Capped Calls were separately negotiated transactions, are not a part of the terms of the Convertible Notes, and do not affect the rights of the holders of the Convertible Notes. The Capped Calls meet the criteria for equity classification because they are indexed to the Company’s common stock and the Company has discretion to settle the Capped Calls in shares or cash. As a result, the amount paid for the Capped Calls was recorded as a reduction to additional paid-in capital. The Capped Calls are excluded from the calculation of diluted net income (loss) per share attributable to common stockholders as their effect is antidilutive.Other DebtIn connection with the STI Acquisition, the Company assumed debt obligations of STI. As of June 30, 2022, related debt balances were $47.0 million in short-term debt and $13.6 million in long-term debt. Interest rates on the acquired debt range from 0.55% to 2.76% annually and maturities for the short-term portion of loans range from April 2022 to March 2023. Maturities for the long-term portion of loans are $5.2 million due in 2024 and $8.4 million due in March 2027.