Note 9 - Accrued Retirement Benefits (Tables)

9 Months Ended

Sep. 30, 2023

Notes Tables

Schedule of Defined Benefit Plans Disclosures [Table Text Block]

	September 30,		December 31,
	2023		2022
	(unaudited)		(audited)
	(in thousands)
Defined benefit pension plan	$	1,077	$	1,023
Non-qualified retirement plans		1,698		1,731
Total		2,775		2,754
Less current portion		142		142
Non-current portion of accrued retirement benefits	$	2,633	$	2,612

Schedule of Net Benefit Costs [Table Text Block]

	Three Months Ended						Nine Months Ended
	September 30,						September 30,
	(unaudited)						(unaudited)
	2023			2022			2023			2022
	(in thousands)
Interest cost	$	203		$	264		$	608		$	793
Expected return on plan assets		(165	)		(306	)		(491	)		(918	)
Amortization of net loss		83			156			247			468
Pension and other postretirement expenses	$	121		$	114		$	364		$	343