Annual report pursuant to Section 13 and 15(d)

UNAUDITED QUARTERLY DATA (Details)

v2.4.0.8
UNAUDITED QUARTERLY DATA (Details) (USD $)
In Thousands, except Per Share data, unless otherwise specified
3 Months Ended 12 Months Ended
Dec. 31, 2013
Sep. 30, 2013
Jun. 30, 2013
Mar. 31, 2013
Dec. 31, 2012
Sep. 30, 2012
Jun. 30, 2012
Mar. 31, 2012
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
UNAUDITED QUARTERLY DATA                      
Revenues $ 324,707 $ 362,155 $ 350,798 $ 299,714 $ 306,393 $ 340,179 $ 334,872 $ 289,465 $ 1,337,374 $ 1,270,909 $ 1,205,064
Gross profit (Revenues less cost of services provided) 157,350 181,020 176,437 144,108 143,368 169,701 168,879 141,383      
Net Income $ 27,957 $ 36,200 $ 35,994 $ 23,179 $ 22,914 $ 32,211 $ 33,127 $ 23,080 $ 123,330 $ 111,332 $ 100,711
Income per share:                      
Income per share Basic (in dollars per share) $ 0.19 $ 0.25 $ 0.25 $ 0.16 $ 0.16 $ 0.22 $ 0.23 $ 0.16 $ 0.84 $ 0.76 $ 0.69
Income per share Diluted (in dollars per share) $ 0.19 $ 0.25 $ 0.25 $ 0.16 $ 0.16 $ 0.22 $ 0.23 $ 0.16 $ 0.84 $ 0.76 $ 0.69