v2.4.0.8
Available for Sale Securities (Schedule of Available-for-sale Securities in Continuous Unrealized Loss Position) (Details) (USD $)
In Thousands, unless otherwise specified
Jun. 30, 2014
Dec. 31, 2013
Fair Value:    
Less than or equal to one year $ 951 $ 7,796
More than one year 2,328 923
Gross Unrealized Losses:    
Less than or equal to one year (1) (144)
More than one year (23) (14)
U.S. Treasury securities and obligations of U.S. government authorities and agencies
   
Fair Value:    
Less than or equal to one year 418 5,543
More than one year 2,092 854
Gross Unrealized Losses:    
Less than or equal to one year 0 (102)
More than one year (22) (14)
Corporate securities
   
Fair Value:    
Less than or equal to one year 533 2,253
More than one year 234 67
Gross Unrealized Losses:    
Less than or equal to one year (1) (42)
More than one year (1) 0
Asset-backed securities
   
Fair Value:    
Less than or equal to one year 0 0
More than one year 2 2
Gross Unrealized Losses:    
Less than or equal to one year 0 0
More than one year $ 0 $ 0