v3.20.1

Note 7 - Employee Retirement Benefit Plans: Schedule of Costs of Retirement Plans, changes in benefit obligation (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Text Block [Abstract]
Projected benefit obligation as of beginning of the year	$ 4,222	$ 4,650
Interest cost	148	136
Actuarial loss (gain)	284	(119)
Benefits paid	(387)	(445)
Projected benefit obligation as of beginning of the year	4,267	4,222
Contributions	386	445
Fair value of plan assets - end of year	$ 0	$ 0

Amount of gain (loss) from change in actuarial assumptions which (increases) decreases benefit obligation of defined benefit plan. Assumptions include, but are not limited to, interest, mortality, employee turnover, salary, and temporary deviation from substantive plan.

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Amount of actuarial present value of benefits attributed to service rendered by employee for defined benefit plan.

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Amount of payment to participant of defined benefit plan which decreases benefit obligation. For pension plan, payment includes, but is not limited to, pension benefits and death benefits. For other postretirement plan, payment includes, but is not limited to, prescription drug benefits, health care benefits, life insurance benefits, and legal, educational and advisory services.

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Amount of contribution received by defined benefit plan from employer which increases plan assets.

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Amount of asset segregated and restricted to provide benefit under defined benefit plan. Asset includes, but is not limited to, stock, bond, other investment, earning from investment, and contribution by employer and employee.

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Amount of cost recognized for passage of time related to defined benefit plan.

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