Note 8 - Benefit Plans (Tables)

12 Months Ended

Dec. 31, 2018

Notes Tables

Schedule of Defined Benefit Plans Disclosures [Table Text Block]

(In thousands)	December 31,
	2018			2017
Changes in benefit obligation
Benefit obligation at beginning of year	$	28,386		$	25,258
Service cost		108			65
Interest cost		970			965
Actuarial (gain) loss		(1,597	)		3,755
Benefits paid		(742	)		(1,657	)
Benefit obligation at end of year		27,125			28,386
Changes in plan assets
Fair value of plan assets at beginning of year		22,145			15,791
Actual return on assets		(1,526	)		2,413
Employer contributions		103			5,598
Benefits paid		(742	)		(1,657	)
Fair value of plan assets at end of year		19,980			22,145
Funded status at end of year	$	(7,145	)	$	(6,241	)
Amounts recognized in consolidated balance sheet
Other assets	$	1,663		$	2,181
Other current liabilities		(103	)		(103	)
Long-term pension liability		(8,705	)		(8,319	)
		(7,145	)		(6,241	)
Amounts recognized in accumulated other comprehensive income consist of:
Net actuarial loss	$	11,417		$	10,903

Schedule of Accumulated Benefit Obligations in Excess of Fair Value of Plan Assets [Table Text Block]

	December 31,
	2018			2017
Projected benefit obligation	$	27,125		$	28,386
Fair value of plan assets		(19,980	)		(22,145	)
	$	7,145		$	6,241

Schedule of Net Benefit Costs [Table Text Block]

	2018			2017			2016
Service cost - benefits earned during the period	$	108		$	65		$	57
Interest cost on projected benefit obligation		970			965			988
Expected return on plan assets		(1,717	)		(1,218	)		(1,188	)
Recognized actuarial loss		1,132			1,042			1,027
Settlement loss		-			435			445
Net periodic pension cost after settlements	$	493		$	1,289		$	1,329

Schedule of Assumptions Used [Table Text Block]

							Long Term Rate
	Discount Rate						of Return						Salary Scale
	Corp.			Plants			Corp.			Plants			Corp.		Plants
2017		3.53	%		3.45	%		8.00	%		8.00	%		N/A		N/A
2018		4.14	%		4.06	%		8.00	%		8.00	%		N/A		N/A

							Long Term Rate
	Discount Rate						of Return						Salary Scale
	Corp.			Plants			Corp.			Plants			Corp.		Plants
2016		4.19	%		4.09	%		8.00	%		8.00	%		N/A		N/A
2017		4.04	%		3.91	%		8.00	%		8.00	%		N/A		N/A
2018		3.53	%		3.45	%		8.00	%		8.00	%		N/A		N/A

Schedule of Allocation of Plan Assets [Table Text Block]

	Percentage of Plan Assets at December 31,						Target Allocation
Investment description	201 8			201 7			201 9
Equity securities		59	%		52	%		60	%
Fixed income		40	%		29	%		40	%
Other		1	%		19	%		-	%
Total		100	%		100	%		100	%

Schedule of Expected Benefit Payments [Table Text Block]

Year	Projected Benefit Payments
	(in thousands)
2019	$	1,612
2020	$	2,108
2021	$	2,000
2022	$	2,009
2023	$	1,471
2024-2028	$	8,590