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Note 24 - Defined Benefit Plan (Tables)
12 Months Ended
Dec. 31, 2022
Notes Tables  
Changes in Projected Benefit Obligations, Fair Value of Plan Assets, and Funded Status of Plan [Table Text Block]
  2022   2021* 

Change in Projected Benefit Obligation:

        

Benefit obligation at beginning of period

 $36,995  $73,081 

Interest cost

  1,052   762 

Settlement payments

  -   (29,107)

Actuarial gain

  (9,781)  (6,831)

Benefit payments

  (2,101)  (910)

Benefit obligation at end of period

 $26,165  $36,995 

Change in Plan Assets:

        

Fair value of plan assets at beginning of period

 $43,653  $74,025 

Actual return on plan assets

  (966)  642 

Settlement payments

  -   (30,104)

Benefit payments

  (2,101)  (910)

Fair value of plan assets at end of period

 $40,586  $43,653 

Funded status at end of period (included in Accounts and notes receivable)

 $14,421  $6,658 

Accumulated benefit obligation

 $26,165  $36,995 

Net gain recognized in Accumulated other comprehensive income

 $10,581  $2,216 
Schedule of Net Benefit Costs [Table Text Block]
  

2022

  

2021

 

Interest cost

 $(1,052) $(750)

Expected return on plan assets

  413   2,125 

Amortization of net gain

  37   - 

Settlement gain

  -   2,216 

Total

 $(602) $3,591 
Defined Benefit Plan, Assumptions [Table Text Block]
  

2022

  

2021

 

Discount rate

  4.88%  2.43%

Salary scale increases

  N/A   N/A 

Interest credit rate for cash balance plan

  4.50%  4.50%
Schedule of Expected Benefit Payments [Table Text Block]
  

2023

  

2024

  

2025

  

2026

  

2027

   2028 - 2032 

Benefit payments

 $6.4  $2.0  $1.9  $1.9  $1.8  $8.2 
Defined Benefit Plan, Plan Assets, Allocation [Table Text Block]
  

2022

  

2021

 
  

Fair Value

  

Asset Allocation

  

Fair Value

  

Asset Allocation

 

Cash and short-term investments

 $40,586   100.0% $26,246   60.1%

Large company funds

  -   -   7,130   16.3%

Mid company funds

  -   -   662   1.5%

Small company funds

  -   -   1,958   4.5%

International funds

  -   -   1,972   4.5%

Fixed income funds

  -   -   4,260   9.8%

Growth funds

  -   -   1,425   3.3%

Total

 $40,586   100.0% $43,653   100.0%