v2.4.0.8
Air Medical Services Contract Revenue (Details) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2013
Air Medical Services Contract Revenue [Abstract]  
Initial term of operating agreements, lower range limit 1 year
Initial term of operating agreements, upper range limit 10 years
Future revenue from fixed-fee portion of operating agreements [Abstract]  
2014 $ 122,761
2015 73,569
2016 36,465
2017 16,901
2018 5,495
Thereafter   
Total $ 255,191