XML 36 R21.htm IDEA: XBRL DOCUMENT v2.4.0.8
Marketable Securities (Schedule of Debt Securities by Major Interest Type) (Details) (USD $)
In Thousands, unless otherwise specified
 6 Months Ended 12 Months Ended
Jun. 30, 2014
Dec. 31, 2013
Schedule of Held-to-maturity Securities [Line Items]    
Amortized cost $ 39,200 [1] $ 39,632 [1]
Net unrealized holding gains/(losses) (346) (154)
Aggregate fair value 38,854 [2] 39,478 [2]
Up to 2% [Member]
    
Schedule of Held-to-maturity Securities [Line Items]    
Amortized cost 35,073 34,945
Net unrealized holding gains/(losses) (291) (217)
Aggregate fair value 34,782 34,728
Up to 2% [Member] | Maximum [Member]
    
Schedule of Held-to-maturity Securities [Line Items]    
Interest rate 2.00% 2.00%
2.05% - 2.951% [Member]
    
Schedule of Held-to-maturity Securities [Line Items]    
Amortized cost 4,127 4,687
Net unrealized holding gains/(losses) (55) 63
Aggregate fair value $ 4,072 $ 4,750
2.05% - 2.951% [Member] | Minimum [Member]
    
Schedule of Held-to-maturity Securities [Line Items]    
Interest rate 2.05% 2.05%
2.05% - 2.951% [Member] | Maximum [Member]
    
Schedule of Held-to-maturity Securities [Line Items]    
Interest rate 2.951% 2.951%
[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).