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Note 8 - Debt (Tables)
9 Months Ended
Sep. 30, 2021
Notes Tables  
Schedule of Long-term Debt Instruments [Table Text Block]
   

September 30, 2021

   

December 31, 2020

 

Senior Credit Facilities (as defined below)

  $ 2,320,323     $ 1,541,621  

Senior Notes (as defined below)

    650,000       650,000  

Convertible Notes (as defined below)

    920,000       -  

Finance lease liabilities

    6,001       5,466  

Total debt

    3,896,324       2,197,087  

Less: Unamortized debt discount

    (21,683 )     -  

Less: Unamortized debt issuance costs

    (29,747 )     (21,897 )

Less: Current portion of long-term debt

    (34,570 )     (26,392 )

Total long-term debt

  $ 3,810,324     $ 2,148,798  
Summary of Term Loans [Table Text Block]
       

Original

   

Amortization

   

Outstanding

 

Final Maturity

 

Balance Due

 

Benchmark

 

Applicable

   

Interest

 

Instrument

 

Draw Date

 

Principal

   

Per Annum(1)

   

Principal

 

Date

 

Upon Maturity

 

Rate

 

Margin(2)

   

Rate

 

Term Loan A-2

 

5/8/2019(3)

  $ 700,000    

Varies(4)

    $ 663,845  

10/30/2025

  $ 476,607  

LIBOR

 

1.75%

    1.83 %
   

10/1/2019(3)

                                             

Term Loan B-2

 

1/7/2019

    250,000    

1.0%

      243,750  

10/30/2027

    228,750  

LIBOR

 

2.00%

    2.08 %

Term Loan B-3

 

6/14/2019(5)

    625,000    

1.0%

      614,728  

10/30/2027

    577,472  

LIBOR

 

2.00%

    2.08 %
   

10/30/2020(5)

                                             

Term Loan B-4

 

5/3/2021

    800,000    

1.0%

      798,000  

5/3/2028

    746,000  

LIBOR

 

2.00%

    2.08 %

Total

  $ 2,375,000           $ 2,320,323       $ 2,028,829                
Convertible Debt [Table Text Block]
   

September 30, 2021

 
   

2026 Notes

   

2028 Notes

   

Total

 

Gross carrying amount

  $ 575,000     $ 345,000     $ 920,000  

Less: Unamortized discount

    (13,368 )     (8,315 )     (21,683 )

Less: Unamortized debt issuance costs

    (365 )     (235 )     (600 )

Net carrying amount

  $ 561,267     $ 336,450     $ 897,717  
   

Three Months Ended September 30, 2021

   

Nine Months Ended September 30, 2021

 
   

2026 Notes

   

2028 Notes

   

Total

   

2026 Notes

   

2028 Notes

   

Total

 

Contractual interest expense

  $ -     $ 970     $ 970     $ -     $ 2,232     $ 2,232  

Amortization of discount

    756       325       1,081       1,726       741       2,467  

Amortization of debt issuance costs

    21       9       30       47       21       68  

Total interest expense

  $ 777     $ 1,304     $ 2,081     $ 1,773     $ 2,994     $ 4,767  
                                                 

Effective interest rate

    0.5 %     1.5 %           0.5 %     1.5 %      
Unamortized Debt Issuance Costs [Table Text Block]
   

September 30, 2021

   

December 31, 2020

 

Revolving Credit Facility portion:

               

Other noncurrent assets

  $ 2,746     $ 3,249  

Term loans and Notes portion:

               

Long-term debt (contra account)

    29,747       21,897  

Total

  $ 32,493     $ 25,146  
Schedule of Maturities of Long-term Debt [Table Text Block]

Year Ending December 31,

 

Amount

 

2021 (remaining three months)

  $ 8,433  

2022

    37,986  

2023

    55,008  

2024

    76,285  

2025

    557,147  

Thereafter

    3,155,464  

Total

  $ 3,890,323