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CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (USD $) In Thousands, except Share data, unless otherwise specified | Common Stock | Additional Paid in Capital | Accumulated Other Comprehensive Income (Loss) | Retained Earnings | Total
--- | --- | --- | --- | --- | ---
Balances at Jul. 31, 2009 | $ 17 | $ 334,423 | $ (27,082) | $ 614,101 | $ 921,459
Balances (in shares) at Jul. 31, 2009 | 167,877,628 |  |  |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |
Net income |  |  |  | 151,627 | 151,627
Currency translation adjustment |  |  | (5,659) |  | (5,659)
Exercise of stock options, net of repurchased shares |  | 5,351 |  | (7,315) | (1,964)
Exercise of stock options, net of repurchased shares (in shares) | 954,930 |  |  |  |
Employee stock-based compensation and related tax benefit |  | 24,184 |  |  | 24,184
Shares issued for Employee Stock Purchase Plan |  | 2,044 |  |  | 2,044
Shares issued for Employee Stock Purchase Plan (in shares) | 136,070 |  |  |  |
Shares repurchased |  | (512) |  | (3,945) | (4,457)
Shares repurchased (in shares) | (242,502) |  |  |  |
Balances at Jul. 31, 2010 | 17 | 365,490 | (32,741) | 754,468 | 1,087,234
Balances (in shares) at Jul. 31, 2010 | 168,726,126 |  |  |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |
Net income |  |  |  | 166,375 | 166,375
Currency translation adjustment |  |  | 9,516 |  | 9,516
Exercise of stock options, net of repurchased shares |  | 6,486 |  | (3,639) | 2,847
Exercise of stock options, net of repurchased shares (in shares) | 866,526 |  |  |  |
Employee stock-based compensation and related tax benefit |  | 22,645 |  |  | 22,645
Shares issued for Employee Stock Purchase Plan |  | 1,957 |  |  | 1,957
Shares issued for Employee Stock Purchase Plan (in shares) | 127,192 |  |  |  |
Shares repurchased | (4) | (82,651) |  | (652,747) | (735,402)
Shares repurchased (in shares) | (37,708,810) |  |  |  |
Balances at Jul. 31, 2011 | 13 | 313,927 | (23,225) | 264,457 | 555,172
Balances (in shares) at Jul. 31, 2011 | 132,011,034 |  |  |  | 132,011,034
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |
Net income |  |  |  | 182,119 | 182,119
Currency translation adjustment |  |  | (11,708) |  | (11,708)
Interest rate swap, net of tax effects |  |  | (3,110) |  | (3,110)
Exercise of stock options, net of repurchased shares |  | 13,202 |  | (2,777) | 10,425
Exercise of stock options, net of repurchased shares (in shares) | 1,165,605 |  |  |  |
Employee stock-based compensation and related tax benefit |  | 26,158 |  |  | 26,158
Shares issued for Employee Stock Purchase Plan |  | 1,957 |  |  | 1,957
Shares issued for Employee Stock Purchase Plan (in shares) | 97,769 |  |  |  |
Shares repurchased | (1) | (29,057) |  | (170,838) | (199,897)
Shares repurchased (in shares) | (8,880,708) |  |  |  |
Balances at Jul. 31, 2012 | $ 12 | $ 326,187 | $ (38,043) | $ 272,961 | $ 561,117
Balances (in shares) at Jul. 31, 2012 | 124,393,700 |  |  |  | 124,393,700

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