XML 82 R93.htm IDEA: XBRL DOCUMENT v2.4.0.6
Quarterly Information (Details) (USD $)
In Thousands, except Per Share data, unless otherwise specified
 3 Months Ended 12 Months Ended
Jul. 31, 2012
Apr. 30, 2012
Jan. 31, 2012
Oct. 31, 2011
Jul. 31, 2011
Apr. 30, 2011
Jan. 31, 2011
Oct. 30, 2010
Jul. 31, 2012
Jul. 31, 2011
Jul. 31, 2010
Quarterly Financial Information Disclosure [Abstract]                      
Revenues $ 226,556 [1],[2] $ 244,105 [1],[2] $ 227,904 [1],[2] $ 225,626 [1],[2] $ 215,443 [1],[2],[3] $ 236,755 [1],[2],[3] $ 207,380 [1],[2],[3] $ 212,667 [1],[2],[3] $ 924,191 $ 872,246 $ 772,879
Operating income 69,494 [1],[2] 87,944 [1],[2] 63,539 [1],[2] 65,376 [1],[2] 63,456 [1],[2],[3] 82,044 [1],[2],[3] 60,195 [1],[2],[3] 59,594 [1],[2],[3] 286,353 265,290 239,070
Income before income taxes 67,478 [1],[2] 84,547 [1],[2] 62,216 [1],[2] 63,815 [1],[2] 62,645 [1],[2],[3] 80,350 [1],[2],[3] 60,717 [1],[2],[3] 60,163 [1],[2],[3]      
Net income $ 44,896 [1],[2] $ 55,471 [1],[2] $ 40,603 [1],[2] $ 41,149 [1],[2] $ 40,521 [1],[2],[3] $ 50,136 [1],[2],[3] $ 37,893 [1],[2],[3] $ 37,823 [1],[2],[3] $ 182,119 $ 166,375 $ 151,627
Basic net income per share (in dollars per share) $ 0.36 [1],[2] $ 0.44 [1],[2] $ 0.32 [1],[2] $ 0.32 [1],[2] $ 0.30 [1],[2],[3] $ 0.36 [1],[2],[3] $ 0.24 [1],[2],[3] $ 0.23 [1],[2],[3] $ 1.42 $ 1.10 $ 0.90
Diluted net income per share (in dollars per share) $ 0.35 [1],[2] $ 0.43 [1],[2] $ 0.31 [1],[2] $ 0.31 [1],[2] $ 0.29 [1],[2],[3] $ 0.35 [1],[2],[3] $ 0.23 [1],[2],[3] $ 0.23 [1],[2],[3] $ 1.39 $ 1.08 $ 0.89
[1] Earnings per share were computed independently for each of the periods presented; therefore, the sum of the earnings per share amounts for the quarters may not equal the total for the year.
[2] All per share amounts have been revised to reflect the impact of the two-for-one stock split effected in the form of a stock dividend, which issued one additional share of common stock to each share of common stock outstanding on March 23, 2012.
[3] Fiscal 2011 results are impacted from the adoption of ASU 2009-13.