Note 8 - Benefit Plans (Tables)

12 Months Ended

Dec. 31, 2014

Compensation and Retirement Disclosure [Abstract]

Schedule of Defined Benefit Plans Disclosures [Table Text Block]

	December 31,
	2014			2013
Changes in benefit obligation
Benefit obligation at beginning of year	$	21,633,000		$	27,819,000
Service cost		81,000			364,000
Interest cost		1,001,000			1,016,000
Actuarial loss (gain)		4,168,000			(2,810,000	)
Curtailment gain		-			(1,990,000	)
Benefits paid		(1,413,000	)		(2,766,000	)
Benefit obligation at end of year		25,470,000			21,633,000
Changes in plan assets
Fair value of plan assets at beginning of year		18,016,000			17,351,000
Actual return on assets		783,000			2,431,000
Employer contributions		-			1,000,000
Benefits paid		(1,413,000	)		(2,766,000	)
Fair value of plan assets at end of year		17,386,000			18,016,000
Funded status at end of year	$	(8,084,000	)	$	(3,617,000	)
Amounts recognized in consolidated balance sheet
Long-term pension liability	$	(8,084,000	)	$	(3,617,000	)
Amounts recognized in accumulated other comprehensive income consist of:
Net actuarial loss	$	9,153,000		$	4,903,000

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

Information for pension plans with projected benefit obligation in excess of plan assets
	December 31,
	2014			2013
Projected benefit obligation	$	25,470,000		$	21,633,000
Fair value of plan assets		(17,386,000	)		(18,016,000	)
	$	8,084,000		$	3,617,000

Schedule of Net Benefit Costs [Table Text Block]

Components of net periodic benefit cost
	2014			2013
Net periodic benefits cost
Service cost - benefits earned during the period	$	81,000		$	364,000
Interest cost on projected benefit obligation		1,001,000			1,016,000
Expected return on plan assets		(1,395,000	)		(1,325,000	)
Amortization of prior service cost		-			13,000
Recognized actuarial loss		322,000			938,000
Settlement loss		208,000			476,000
Net periodic pension cost after settlements	$	217,000		$	1,482,000

Schedule of Assumptions Used [Table Text Block]

	Discount Rate						Long Term Rate of Return						Salary Scale
	Corp.			Plants			Corp.			Plants			Corp		Plants
2013		4.82	%		4.66	%		8.00	%		8.00	%		N/A		N/A
2014		3.86	%		3.74	%		8.00	%		8.00	%		N/A		N/A

	Discount Rate						Long Term Rate of Return						Salary Scale
	Corp.			Plants			Corp.			Plants			Corp			Plants
2013		3.93	%		3.77	%		8.00	%		8.00	%		3.00	%		N/A
2014		4.82	%		4.66	%		8.00	%		8.00	%		N/A			N/A

Schedule of Allocation of Plan Assets [Table Text Block]

	Percentage of Plan
	Assets at						Target
	December 31,						Allocation
Investment description	2014			2013			2015
Equity securities		63	%		59	%		65	%
Fixed income		15	%		16	%		15	%
Other		22	%		25	%		20	%
Total		100	%		100	%		100	%

Schedule of Expected Benefit Payments [Table Text Block]

Year	Projected Benefit Payments
2015	$	1,204,000
2016	$	2,194,000
2017	$	2,242,000
2018	$	1,349,000
2019	$	1,384,000
2020-2024	$	8,672,000