XML 59 R43.htm IDEA: XBRL DOCUMENT v3.7.0.1
MARKETABLE SECURITIES (Schedule of Marketable Securities With Contractual Maturities) (Details) - USD ($)
$ in Thousands
Dec. 31, 2016
Dec. 31, 2015
Schedule of Available-for-sale Securities [Line Items]    
Adjusted cost, less than one year $ 20,407 $ 14,050
Gross unrealized losses, less than one year (10) (16)
Gross unrealized gains, less than one year 55 1,969
Market Value, less than one year 20,452 16,003
Adjusted cost, over one year through three years 60,020 70,391
Gross unrealized losses, over one year through three years (71) (260)
Gross unrealized gains, over one through three years 141 192
Market Value, over one year through three years 60,090 70,323
Adjusted cost, greater than three years 15,019 17,698
Gross unrealized losses, greater than three years (171) (207)
Gross unrealized gains, greater than three years 29
Market value, greater than three years 14,877 17,491
Foreign banks and government debentures [Member]    
Schedule of Available-for-sale Securities [Line Items]    
Adjusted cost, less than one year 15,361 5,895
Gross unrealized losses, less than one year (10) (15)
Gross unrealized gains, less than one year 51 16
Market Value, less than one year 15,402 5,896
Adjusted cost, over one year through three years 31,040 38,383
Gross unrealized losses, over one year through three years (45) (117)
Gross unrealized gains, over one through three years 76 149
Market Value, over one year through three years 31,071 38,415
Adjusted cost, greater than three years 7,738 6,356
Gross unrealized losses, greater than three years (111) (71)
Gross unrealized gains, greater than three years
Market value, greater than three years 7,627 6,285
Corporate debentures [Member]    
Schedule of Available-for-sale Securities [Line Items]    
Adjusted cost, less than one year 5,046 4,393
Gross unrealized losses, less than one year (1)
Gross unrealized gains, less than one year 4 17
Market Value, less than one year 5,050 4,409
Adjusted cost, over one year through three years 28,980 32,008
Gross unrealized losses, over one year through three years (26) (143)
Gross unrealized gains, over one through three years 65 43
Market Value, over one year through three years 29,019 31,908
Adjusted cost, greater than three years 7,281 11,342
Gross unrealized losses, greater than three years (60) (136)
Gross unrealized gains, greater than three years 29
Market value, greater than three years 7,250 11,206
Corporate shares [Member]    
Schedule of Available-for-sale Securities [Line Items]    
Adjusted cost, less than one year 3,762
Gross unrealized losses, less than one year
Gross unrealized gains, less than one year 1,936
Market Value, less than one year $ 5,698