XML 60 R44.htm IDEA: XBRL DOCUMENT v3.7.0.1
MARKETABLE SECURITIES (Summary of Investments With Continuous Unrealized Losses and Related Fair Values) (Details)
$ in Thousands
Dec. 31, 2016
USD ($)
Investments
Dec. 31, 2015
USD ($)
Schedule of Available-for-sale Securities [Line Items]    
Investments with continuous unrealized losses for less than 12 months, Fair value $ 33,562 $ 25,738
Investments with continuous unrealized losses for less than 12 months, Unrealized losses (218) (157)
Investments with continuous unrealized losses for 12 months or greater, Fair value 3,338 40,007
Investments with continuous unrealized losses for 12 months or greater, unrealized losses (34) (327)
Total investments with continuous unrealized losses, Fair value 36,900 65,745
Total investments with continuous unrealized losses, unrealized losses $ (252) (484)
Number of investments with continuous unrealized loss for more than 12 months | Investments 3  
Interest receivable $ 866 852
Foreign banks and government debentures [Member]    
Schedule of Available-for-sale Securities [Line Items]    
Investments with continuous unrealized losses for less than 12 months, Fair value 20,118 16,041
Investments with continuous unrealized losses for less than 12 months, Unrealized losses (139) (64)
Investments with continuous unrealized losses for 12 months or greater, Fair value 2,325 15,660
Investments with continuous unrealized losses for 12 months or greater, unrealized losses (28) (139)
Total investments with continuous unrealized losses, Fair value 22,443 31,701
Total investments with continuous unrealized losses, unrealized losses (167) (203)
Corporate debentures [Member]    
Schedule of Available-for-sale Securities [Line Items]    
Investments with continuous unrealized losses for less than 12 months, Fair value 13,444 9,697
Investments with continuous unrealized losses for less than 12 months, Unrealized losses (79) (93)
Investments with continuous unrealized losses for 12 months or greater, Fair value 1,013 24,347
Investments with continuous unrealized losses for 12 months or greater, unrealized losses (6) (188)
Total investments with continuous unrealized losses, Fair value 14,457 34,044
Total investments with continuous unrealized losses, unrealized losses $ (85) $ (281)