Note 9 - Accrued Retirement Benefits (Tables)

9 Months Ended

Sep. 30, 2022

Notes Tables

Schedule of Defined Benefit Plans Disclosures [Table Text Block]

	September 30,		December 31,
	2022		2021
	(unaudited)		(audited)
	(in thousands)
Defined benefit pension plan	$	64	$	5,932
Non-qualified retirement plans		2,093		2,147
Total		2,157		8,079
Less current portion		142		142
Non-current portion of accrued retirement benefits	$	2,015	$	7,937

Schedule of Net Benefit Costs [Table Text Block]

	Three Months Ended						Nine Months Ended
	September 30,						September 30,
	(unaudited)						(unaudited)
	2022			2021			2022			2021
	(in thousands)
Interest cost	$	264		$	309		$	793		$	927
Expected return on plan assets		(306	)		(418	)		(918	)		(1,254	)
Amortization of net loss		156			225			468			675
Pension and other postretirement expenses	$	114		$	116		$	343		$	348