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Debt (Tables)
12 Months Ended
Dec. 31, 2020
Debt [Abstract]  
Schedule of Debt [Table Text Block]
As of December 31, 2020
As of December 31, 2019
Interest
Outstanding
 
Interest
Outstanding
 
Rate
Balance
Rate
Balance
Credit Facilities:
Revolver
1.65%
$
160,000
3.20%
$
171,169
U.S. Term Loan
1.65%
570,000
3.20%
600,000
EURO Term Loan
1.50%
157,062
1.50%
151,188
Industrial development bonds
5.26%
10,000
5.26%
10,000
Bank lines of credit and other debt obligations
Various
2,072
Various
2,608
Total debt
$
899,134
$
934,965
Less: debt issuance costs
(11,099)
(14,196)
Less: short-term and current portion of long-term debts
(38,967)
(38,332)
Total long
 
-term debt
$
849,068
$
882,437
Schedule of Maturities of Long-term Debt [Table Text Block]
2021
$
38,795
2022
57,850
2023
76,943
2024
715,227
2025
231
Interest Income And Interest Expense Disclosure [Table Text Block]
Year
 
Ended December 31,
2020
2019
2018
Interest expense
$
23,552
$
16,788
$
6,158
Amortization of debt issuance costs
4,749
1,979
70
Total
$
28,301
$
18,767
$
6,228