Note 6 - Accrued Retirement Benefits (Tables)

12 Months Ended

Dec. 31, 2022

Notes Tables

Schedule of Defined Benefit Plans Disclosures [Table Text Block]

	2022			2021
	(in thousands)
Defined benefit pension plan	$	1,023		$	5,932
Non-qualified retirement plan		1,731			2,147
Total		2,754			8,079
Less current portion		(142	)		(142	)
Non-current portion of accrued retirement benefits	$	2,612		$	7,937

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

	2022			2021
	(in thousands)
Change in benefit obligations:
Benefit obligations at beginning of year	$	40,182		$	54,655
Interest cost		1,034			1,237
Actuarial gain		(7,772	)		(1,160	)
Benefits paid		(16,907	)		(14,550	)
Benefit obligations at end of year		16,537			40,182
Change in plan assets:
Fair value of plan assets at beginning of year		32,103			43,587
Actual return on plan assets		(7,241	)		1,384
Employer contributions		5,828			1,682
Benefits paid		(16,907	)		(14,550	)
Fair value of plan assets at end of year		13,783			32,103
Funded status	$	(2,754	)	$	(8,079	)
Accumulated benefit obligations	$	16,537		$	40,182

Defined Benefit Plan, Assumptions [Table Text Block]

Weighted average assumptions to determine benefit obligations:
Discount rate	5.11	-	5.14%	2.69	-	2.74%
Expected long-term return on plan assets		5.00%			4.00%
Rate of compensation increase		n/a			n/a

Weighted average assumptions used to determine net periodic benefit cost:	2022				2021
Discount rate		2.69	-	2.74%		2.28	-	2.35%
Expected long-term return on plan assets			4.00%				4.50%
Rate of compensation increase			n/a				n/a

Schedule of Net Benefit Costs [Table Text Block]

	2022			2021
	(in thousands)
Pension and other benefits:
Interest cost	$	1,034		$	1,237
Expected return on plan assets		(1,226	)		(1,680	)
Recognized net actuarial loss		585			933
Settlement expense		7,492			4,252
Pension expense	$	7,885		$	4,742
Other changes in plan assets and benefit obligations recognized in comprehensive income:
Net loss (gain)	$	696		$	(865	)
Amortization of recognized loss		(8,077	)		(5,185	)
Total recognized gain in comprehensive income	$	(7,381	)	$	(6,050	)

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

	2022 Fair Value Measurements (in thousands)
	Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Measured at NAV as a practical expedient		Total
ACIT equity funds	$	-	$	631	$	828	$	1,459
ACIT fixed income funds		-		10,666		261		10,927
Cash management funds		-		1,397		-		1,397
	$	-	$	12,694	$	1,089	$	13,783

	2021 Fair Value Measurements (in thousands)
	Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Measured at NAV as a practical expedient		Total
ACIT equity funds	$	-	$	6,385	$	1,425	$	7,810
ACIT fixed income funds		-		21,114		1,746		22,860
Cash management funds		-		1,433		-		1,433
	$	-	$	28,932	$	3,171	$	32,103

Schedule of Expected Benefit Payments [Table Text Block]

Years ending December 31,
2023	$	1,507
2024	$	1,474
2025	$	1,448
2026	$	1,416
2027	$	1,379
2028-2032	$	6,283