Debt (Tables)

12 Months Ended

Dec. 31, 2019

Debt Disclosure [Abstract]

Debt

Debt comprised the following at December 31, 2019 and 2018:

(In thousands)	Maturity Dates	December 31, 2019		December 31, 2018
Unsecured private placement notes
3.95% (net of unamortized debt issuance cost of $316 and     $360 for 2019 and 2018, respectively)	2021-2027	$	99,684	$	99,640
3.86% (net of unamortized debt issuance cost of $291 and     $347 for 2019 and 2018, respectively)	2020-2025		85,423		99,653
4.86% (net of unamortized debt issuance cost of $147 and     $186 for 2019 and 2018, respectively)	2020-2023		36,996		46,243
5.88% (net of unamortized debt issuance cost of $0 and     $85 for 2019 and 2018, respectively)	2019		—		22,772
Debt of foreign subsidiaries
Unsecured bank debt, foreign currency	2019		—		7,772
Total debt		$	222,103	$	276,080
Less current maturities			23,571		37,058
Long-term debt		$	198,532	$	239,022

Schedule of Net Interest Expense

Net interest expense for the years ended December 31, 2019, 2018 and 2017, comprised the following:  

(In thousands)	2019			2018			2017
Interest expense	$	12,744		$	13,360		$	14,428
Interest income		(5,717	)		(1,829	)		(2,075	)
		7,027			11,531			12,353
Capitalized interest		(1,095	)		(760	)		(909	)
Interest expense, net	$	5,932		$	10,771		$	11,444