XML 33 R22.htm IDEA: XBRL DOCUMENT v3.10.0.1
Note 6 - Defined Benefit Plan (Tables)
6 Months Ended
Jun. 30, 2018
Notes Tables  
Schedule of Defined Benefit Plans Disclosures [Table Text Block]
   
Pension Benefits
 
   
Six Months Ended June 30,
 
   
2018
   
2017
 
Service cost
 
$
434
    $
346
 
Interest cost
 
 
400
     
372
 
Expected return on plan assets
 
 
(800
)
   
(548
)
Amortization of prior service cost
 
 
(54
)
   
(54
)
Recognized net actuarial loss
 
 
292
     
270
 
Net periodic benefit cost
 
$
272
    $
386