Fair Value Measurements (Tables)

12 Months Ended

Dec. 31, 2017

Fair Value Disclosures [Abstract]

Schedule Of Fair Value Assets And Liabilities Measured On Recurring Basis [Table Text Block]

	Fair Value as of December 31, 2017
(In thousands)		Level 1		Level 2		Level 3		Total
Assets (Liabilities):
Interest rate swap agreements	$	-	$	37	$	-	$	37
	Fair Value as of December 31, 2016
(In thousands)		Level 1		Level 2		Level 3		Total
Assets (Liabilities):
Interest rate swap agreements	$	-	$	-	$	-	$	-