XML 153 R115.htm IDEA: XBRL DOCUMENT v3.19.1
Note 17 - Cash and Cash Equivalents and Other Investments - Components of Cash and Cash Equivalents and Other Investments (Details) - USD ($)
$ in Thousands
Dec. 31, 2018
Dec. 31, 2017
Cash and cash equivalents:    
Cash at banks $ 81,211 $ 150,948
Liquidity funds 160,198 66,033
Short – term investments 186,952 113,240
428,361 330,221
Other investments - current:    
Other investments - current 487,734 1,192,306
Other investments - Non-current:    
Other investments - non-current 118,155 128,335
Fixed Income (time-deposit, zero coupon bonds, commercial papers) [member]    
Other investments - current:    
Other investments - current 300,410 437,406
Bonds and other fixed income [member]    
Other investments - current:    
Other investments - current 187,324 754,800
Other investments - Non-current:    
Other investments - non-current 113,829 123,498
Other investments [member]    
Other investments - current:    
Other investments - current 100
Other investments - Non-current:    
Other investments - non-current $ 4,326 $ 4,837