Note 9 - Benefit Plans (Tables)

12 Months Ended

Dec. 31, 2012

Schedule of Defined Benefit Plans Disclosures [Table Text Block]

	December 31,
	2012			2011
Changes in benefit obligation
Benefit obligation at beginning of year	$	23,897,000		$	20,277,000
Service cost		595,000			559,000
Interest cost		1,023,000			1,092,000
Actuarial loss		3,469,000			3,215,000
Benefits paid		(1,165,000	)		(1,246,000	)
Benefit obligation at end of year		27,819,000			23,897,000
Changes in plan assets
Fair value of plan assets at beginning of year		15,811,000			16,742,000
Actual return on assets		2,155,000			(235,000	)
Employer contributions		550,000			550,000
Benefits paid		(1,165,000	)		(1,246,000	)
Fair value of plan assets at end of year		17,351,000			15,811,000
Funded status at end of year	$	(10,468,000	)	$	(8,086,000	)
Amounts recognized in consolidated balance sheet
Long-term pension liability	$	(10,468,000	)	$	(8,086,000	)
Amounts recognized in accumulated other comprehensive
income consist of:
Net actuarial loss	$	12,223,000		$	10,597,000
Prior service cost		13,000			30,000
	$	12,236,000		$	10,627,000

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

	December 31,
		2012			2011
Projected benefit obligation	$	27,819,000		$	23,897,000
Fair value of plan assets		(17,351,000	)		(15,811,000	)
	$	10,468,000		$	8,086,000

Schedule of Net Benefit Costs [Table Text Block]

Net periodic benefits cost		2012			2011
Service cost - benefits earned during the period	$	595,000		$	559,000
Interest cost on projected benefit obligation		1,023,000			1,092,000
Expected return on plan assets		(1,270,000	)		(1,347,000	)
Amortization of prior service cost		17,000			25,000
Recognized actuarial loss		957,000			479,000
Net periodic pension cost after settlements	$	1,322,000		$	808,000

Schedule of Assumptions Used [Table Text Block]

	Discount Rate						Long Term Rate of Return						Salary Scale
	Corp.			Plants			Corp.			Plants			Corp.			Plants
2011		4.35	%		4.23	%		8.00	%		8.00	%		3.50	%		N/A
2012		3.93	%		3.77	%		8.00	%		8.00	%		3.00	%		N/A

	Discount Rate						Long Term Rate of Return						Salary Scale
	Corp.			Plants			Corp.			Plants			Corp.			Plants
2011		5.49	%		5.28	%		8.00	%		8.00	%		4.50	%		N/A
2012		4.35	%		4.23	%		8.00	%		8.00	%		3.50	%		N/A

Schedule of Allocation of Plan Assets [Table Text Block]

	Percentage of Plan Assets at December 31,						Target Allocation
Investment description	2012			2011			2013
Equity securities		73	%		66	%		70	%
Fixed income		22	%		31	%		25	%
Other		5	%		3	%		5	%
Total		100	%		100	%		100	%

Schedule of Expected Benefit Payments [Table Text Block]

Year	Projected Benefit Payments
2013		$2,063,000
2014		$1,395,000
2015		$1,370,000
2016		$3,705,000
2017		$2,381,000
2018-2022		$10,535,000