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Financial Instruments (Tables)
12 Months Ended
Dec. 31, 2019
Long-term Debt and Lease Obligation [Abstract]  
Schedule of Long-Term Debt

Long-term debt, principally to banks and noteholders, consists of:

(in thousands, except interest rates)

2019

2018

Revolving credit agreement with borrowings outstanding at an end of period interest rate of 3.43% in 2019 and 3.69% in 2018 (including the effect of interest rate hedging transactions, as described below), due in 2022

$424,000

$499,000

Finance obligation

25,886

Other debt, at an average end of period rate of 5.50% in both 2019 and 2018, due in varying amounts through 2021

29

45

Long-term debt

424,029

524,931

Less: current portion

(20)

(1,224)

Long-term debt, net of current portion

$424,009

$523,707