Note 8 - Benefit Plans (Tables)

12 Months Ended

Dec. 31, 2015

Notes Tables

Schedule of Defined Benefit Plans Disclosures [Table Text Block]

	December 31,
	2015			2014
Changes in benefit obligation
Benefit obligation at beginning of year	$	25,470,000		$	21,633,000
Service cost		48,000			81,000
Interest cost		951,000			1,001,000
Actuarial loss (gain)		327,000			4,168,000
Benefits paid		(2,006,000	)		(1,413,000	)
Benefit obligation at end of year		24,790,000			25,470,000
Changes in plan assets
Fair value of plan assets at beginning of year		17,386,000			18,016,000
Actual return on assets		(515,000	)		783,000
Employer contributions		1,000,000			-
Benefits paid		(2,006,000	)		(1,413,000	)
Fair value of plan assets at end of year		15,865,000			17,386,000
Funded status at end of year	$	(8,925,000	)	$	(8,084,000	)
Amounts recognized in consolidated balance sheet
Long-term pension liability	$	(8,925,000	)	$	(8,084,000	)
Amounts recognized in accumulated other comprehensive income consist of:
Net actuarial loss	$	10,106,000		$	9,153,000

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

	December 31,
	2015			2014
Projected benefit obligation	$	24,790,000		$	25,470,000
Fair value of plan assets		(15,865,000	)		(17,386,000	)
	$	8,925,000		$	8,084,000

Schedule of Net Benefit Costs [Table Text Block]

Net periodic benefits cost	2015			2014
Service cost - benefits earned during the period	$	48,000		$	81,000
Interest cost on projected benefit obligation		951,000			1,001,000
Expected return on plan assets		(1,343,000	)		(1,395,000	)
Recognized actuarial loss		772,000			322,000
Settlement loss		460,000			208,000
Net periodic pension cost after settlements	$	888,000		$	217,000

Schedule of Assumptions Used [Table Text Block]

	Discount Rate						Long Term Rate of Return						Salary Scale
	Corp.			Plants			Corp.			Plants			Corp.		Plants
2014		3.86	%		3.74	%		8.00	%		8.00	%		N/A		N/A
2015		4.19	%		4.09	%		8.00	%		8.00	%		N/A		N/A

	Discount Rate						Long Term Rate of Return						Salary Scale
	Corp.			Plants			Corp.			Plants			Corp.		Plants
2014		4.82	%		4.66	%		8.00	%		8.00	%		N/A		N/A
2015		3.86	%		3.74	%		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	2015		2014		2016
Equity securities		64%		63%		65%
Fixed income		15%		15%		15%
Other		21%		22%		20%
Total		100%		100%		100%

Schedule of Expected Benefit Payments [Table Text Block]

Year	Projected Benefit Payments
2016	$	2,034,000
2017	$	2,182,000
2018	$	1,318,000
2019	$	1,437,000
2020	$	2,054,000
2021-2025	$	7,853,000