XML 17 R14.htm IDEA: XBRL DOCUMENT v3.19.3.a.u2
Note 5 - Inventories
12 Months Ended
Dec. 31, 2019
Notes to Financial Statements  
Inventory Disclosure [Text Block]
5.
INVENTORIES:
 
Inventories consist of the following (in thousands):
 
   
December 31,
 
   
2019
   
2018
 
                 
Raw materials
  $
26,772
    $
34,426
 
Work-in-process
   
1,579
     
2,368
 
Finished goods
   
683
     
1,075
 
Supplies
   
1,620
     
1,507
 
Total inventories
  $
30,654
    $
39,376