Debt (Tables)

6 Months Ended

Jun. 30, 2016

Debt Disclosure [Abstract]

Debt

At June 30, 2016, and December 31, 2015, debt comprised the following: 

(In thousands)	Maturity Dates	June 30, 2016		December 31, 2015
Unsecured private placement notes
3.95% (net of unamortized debt issuance cost of     $366 and $383 for 2016 and 2015, respectively)	2021-2027	$	99,634	$	99,617
3.86% (net of unamortized debt issuance cost of     $417 and $440 for 2016 and 2015, respectively)	2019-2025		99,583		99,560
4.86% (net of unamortized debt issuance cost of     $244 and $260 for 2016 and 2015, respectively)	2017-2023		64,756		64,740
5.88% (net of unamortized debt issuance cost of     $129 and $140 for 2016 and 2015, respectively)	2016-2022		34,157		39,860
5.69% (net of unamortized debt issuance cost of     $38 and $46 for 2016 and 2015, respectively)	2016-2018		17,104		17,096
Unsecured U.S. Bank Debt	2019				—
Debt of foreign subsidiaries
Unsecured bank debt, foreign currency	2016		151		4,810
Unsecured bank term loan, foreign currency	2021		3,491		3,724
Secured bank debt, foreign currency	2016		2,481		1,947
Total debt		$	321,357	$	331,354
Less current maturities			14,377		18,806
Long-term debt		$	306,980	$	312,548