Annual report pursuant to Section 13 and 15(d)

Other Long-term Liabilities

v3.20.4
Other Long-term Liabilities
 12 Months Ended
Dec. 31, 2020
Other Liabilities Disclosure [Abstract]  
Other Long-term Liabilities
18. Other Long-term Liabilities:
The following table summarizes the components of other long-term liabilities as follows:
December 31,
2020 2019
Pension benefits $ 40,812  $ 52,060 
Other postretirement benefits 3,644  1,668 
Supplemental retirement plans 11,376  10,632 
Derivative liabilities 32,512  10,956 
Deferred revenue 13,388  6,450 
Reserve for uncertain tax positions 345  873 
Asset retirement obligation 4,943  4,555 
Other 3,995  4,110 
$ 111,015  $ 91,304