Short-term Debt and Credit Lines (Tables)

12 Months Ended

Dec. 31, 2019

Debt Disclosure [Abstract]

Schedule of Short-Term Debt

Short-term debt at December 31, 2019 and 2018 consisted of:

	2019		2018
	(In thousands)
Notes payable to banks	$	4,480	$	4,560
Commercial paper	—			13,500
Total short-term debt	$	4,480	$	18,060