XML 49 R35.htm IDEA: XBRL DOCUMENT v3.10.0.1
Note 4 - Non-operating Income (Tables)
 12 Months Ended
Dec. 31, 2018
Notes Tables  
Schedule of Other Nonoperating Income, by Component [Table Text Block]
   
Year Ended December 31,
  
(in thousands)
  
2018
    
2017
    
2016
  
Equity in earnings of unconsolidated investments
   $
1,020
     $
6,932
     $
6,636
  
Dividends and net realized gains on sale of securities
    
7,417
      
7,335
      
7,547
  
Interest income
    
7,183
      
6,172
      
5,482
  
Gain on acquisition of equity method investment
    
2,050
      
-
      
-
  
Total non-operating income
   $
17,670
     $
20,439
     $
19,665