XML 41 R20.htm IDEA: XBRL DOCUMENT v2.4.0.8
Marketable Securities (Held-To-Maturity Securities) (Details) (USD $)
In Thousands, unless otherwise specified
Jun. 30, 2014
Dec. 31, 2013
Schedule of Held-to-maturity Securities [Line Items]    
Amortized cost $ 39,200 [1] $ 39,632 [1]
Gross unrealized holding gains 7 89
Gross unrealized holding (losses) (353) (243)
Aggregate fair value 38,854 [2] 39,478 [2]
Accrued interest on securities 375 391
Current [Member]
    
Schedule of Held-to-maturity Securities [Line Items]    
Amortized cost 15,272 [1] 15,015 [1]
Gross unrealized holding gains 7 20
Gross unrealized holding (losses) (103) (76)
Aggregate fair value 15,176 [2] 14,959 [2]
Non-current [Member]
    
Schedule of Held-to-maturity Securities [Line Items]    
Amortized cost 23,928 [1] 24,617 [1]
Gross unrealized holding gains    69
Gross unrealized holding (losses) (250) (167)
Aggregate fair value $ 23,678 [2] $ 24,519 [2]
[1] Including accrued interest in the amount of $391 thousand and $375 thousand as of December 31, 2013 and June 30, 2014 respectively.
[2] Fair value is being determined using quoted market prices in active markets (Level 1).