Note 9 - Accrued Retirement Benefits (Tables)

12 Months Ended

Dec. 31, 2014

Compensation and Retirement Disclosure [Abstract]

Schedule of Defined Benefit Plans Disclosures [Table Text Block]

	2014			2013
	(in thousands)
Defined benefit pension plans	$	2,540		$	16,941
Supplemental executive retirement plan		4,468			3,972
Deferred compensation plan		276			397
Total		7,284			21,310
Less current portion		(391	)		(443	)
Non-current portion of accrued retirement benefits	$	6,893		$	20,867

Changes in Projected Benefit Obligations, Fair Value of Plan Assets, and Funded Status of Plan [Table Text Block]

	2014			2013
	(in thousands)
Change in benefit obligations:
Benefit obligations at beginning of year	$	66,091		$	72,824
Interest cost		3,093			2,880
Actuarial (gain) loss		6,577			(5,193	)
Benefits paid		(4,412	)		(4,420	)
Benefit obligations at end of year		71,349			66,091
Change in plan assets:
Fair value of plan assets at beginning of year		45,178			42,518
Actual return on plan assets		3,404			4,691
Employer contributions		20,171			2,389
Benefits paid		(4,412	)		(4,420	)
Fair value of plan assets at end of year		64,341			45,178
Funded status	$	(7,008	)	$	(20,913	)
Accumulated benefit obligations	$	71,349		$	66,091
Weighted average assumptions used to determine benefit obligations at December 31:
Discount rate	3.96%	-	4.07%	4.68%	-	4.92%
Expected long-term return on plan assets		5.32%			7.00%
Rate of compensation increase		n/a			n/a

Schedule of Net Benefit Costs [Table Text Block]

	2014			2013
	(in thousands)
Pension and other benefits:
Interest cost	$	3,093		$	2,880
Expected return on plan assets		(3,316	)		(2,906	)
Recognized net actuarial loss		604			914
Pension expense	$	381		$	888
Other changes in plan assets and benefit obligations recognized in comprehensive income:
Net (gain) loss	$	6,486		$	(6,973	)
Recognized loss		(604	)		(914	)
Total recognized (gain) loss in comprehensive income	$	5,882		$	(7,887	)

Schedule of Assumptions Used [Table Text Block]

Weighted average assumptions used to determine net periodic benefit cost:	2014			2013
Pension benefits:
Discount rate	4.68%	-	4.92%	3.87%	-	4.16%
Expected long-term return on plan assets		7.00%			7.00%
Rate of compensation increase		n/a			n/a

Fair Value, Assets Measured on Recurring Basis [Table Text Block]

	2014 Fair Value Measurements (in thousands)
	Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Total
AHGT pooled equity funds	$	-	$	9,884	$	9,884
AHGT pooled fixed income funds		-		51,483		51,483
Cash management funds		-		2,974		2,974
	$	-	$	64,341	$	64,341

	2013 Fair Value Measurements (in thousands)
	Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Total
AHGT pooled equity funds	$	-	$	25,061	$	25,061
AHGT pooled fixed income funds		-		19,160		19,160
Cash management funds		-		957		957
	$	-	$	45,178	$	45,178

Schedule of Expected Benefit Payments [Table Text Block]

2015	$	4,555
2016		4,504
2017		4,482
2018		4,517
2019		4,528
2020 - 2024		22,437