Note 9 - Accrued Retirement Benefits (Tables)

6 Months Ended

Jun. 30, 2023

Notes Tables

Schedule of Defined Benefit Plans Disclosures [Table Text Block]

	June 30,		December 31,
	2023		2022
	(unaudited)		(audited)
	(in thousands)
Defined benefit pension plan	$	1,059	$	1,023
Non-qualified retirement plans		1,709		1,731
Total		2,768		2,754
Less current portion		142		142
Non-current portion of accrued retirement benefits	$	2,626	$	2,612

Schedule of Net Benefit Costs [Table Text Block]

	Three Months Ended						Six Months Ended
	June 30,						June 30,
	(unaudited)						(unaudited)
	2023			2022			2023			2022
	(in thousands)						(in thousands)
Interest cost	$	203		$	264		$	406		$	529
Expected return on plan assets		(164	)		(306	)		(328	)		(612	)
Amortization of net loss		82			156			165			312
Pension and other postretirement expenses	$	121		$	114		$	243		$	229