Current report of foreign issuer pursuant to Rules 13a-16 and 15d-16 Amendments

Stock-Based Compensation Plan (Narrative) (Details)

v2.4.0.8
Stock-Based Compensation Plan (Narrative) (Details) (USD $)
In Thousands, except Share data, unless otherwise specified
3 Months Ended
Mar. 31, 2014
Mar. 31, 2013
Options granted 4,633  
Weighted average fair value of options granted $ 42.85  
Number of options exercised 116,609 292,808
Increase in equity $ 1,000 $ 3,600
Stock option term 10 years  
Vesting period 4 years  
Unrecognized compensation cost 37,100  
Weighted average period for recognition 1 year 9 months 18 days  
Restricted Stock Units [Member]
   
Options granted 6,247  
Unrecognized compensation cost $ 18,200  
Weighted average period for recognition 3 years 4 months 24 days