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Financing Arrangements (Tables)
6 Months Ended
Jun. 30, 2020
Debt Disclosure [Abstract]  
Summary of Carrying Amounts of Debt
A summary of the carrying amounts of our debt follows:
 
June 30, 2020
 
December 31, 2019
Senior secured credit facility
$
328,000

 
$
205,000

Promissory note due 2024
3,590

 
3,853

Total long-term debt
$
331,590

 
$
208,853

Current maturities of long-term debt
(536
)
 
(529
)
Long-term debt, net of current portion
$
331,054

 
$
208,324


Schedule of Maturities of Long-term Debt
Below is a summary of the scheduled remaining principal payments of our debt as of June 30, 2020.
 
Principal Payments of Long-Term Debt
2020
$
266

2021
$
544

2022
$
559

2023
$
575

2024
$
329,646


Summary of Interest Expense Recognized
The following table presents the amount of interest expense recognized related to the Convertible Notes for the periods presented.
 
Three Months Ended
June 30, 2019
 
Six Months Ended
June 30, 2019
Contractual interest coupon
$
781

 
$
1,563

Amortization of debt discount
2,145

 
4,265

Amortization of debt issuance costs
315

 
630

Total interest expense
$
3,241

 
$
6,458