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Consolidated Statements of Stockholders' Equity - USD ($) $ in Thousands | Total | Treasury Stock | Common Stock | Additional Paid-in Capital | Retained Earnings
--- | --- | --- | --- | --- | ---
Beginning Balance (in shares) at Jul. 31, 2015 |  | 9,911,474 | 62,306,037 |  |
Beginning Balance at Jul. 31, 2015 |  | $ (329,015) | $ 6,231 | $ 215,539 | $ 1,172,432
Net income | $ 256,519 |  |  |  | 256,519
Restricted stock unit activity (in shares) |  | 45,706 | 133,758 |  |
Restricted stock unit activity |  | $ (2,484) | $ 13 | (430) |
Cash dividends - $1.20 in 2016, $1.32 in 2017, $1.48 in 2018 per common share |  |  |  |  | (62,970)
Stock compensation expense |  |  |  | 9,387 |
Ending Balance (in shares) at Jul. 31, 2016 |  | 9,957,180 | 62,439,795 |  |
Ending Balance at Jul. 31, 2016 |  | $ (331,499) | $ 6,244 | 224,496 | 1,365,981
Net income | 374,254 |  |  |  | 374,254
Restricted stock unit activity (in shares) |  | 53,889 | 157,315 |  |
Restricted stock unit activity |  | $ (4,572) | $ 16 | (1,471) |
Cash dividends - $1.20 in 2016, $1.32 in 2017, $1.48 in 2018 per common share |  |  |  |  | (69,409)
Stock compensation expense |  |  |  | 12,500 |
Ending Balance (in shares) at Jul. 31, 2017 |  | 10,011,069 | 62,597,110 |  |
Ending Balance at Jul. 31, 2017 | 1,576,540 | $ (336,071) | $ 6,260 | 235,525 | 1,670,826
Net income | 430,151 |  |  |  | 430,151
Restricted stock unit activity (in shares) |  | 59,390 | 168,714 |  |
Restricted stock unit activity |  | $ (7,657) | $ 17 | (321) |
Cash dividends - $1.20 in 2016, $1.32 in 2017, $1.48 in 2018 per common share |  |  |  |  | (77,989)
Stock compensation expense |  |  |  | 17,000 |
Ending Balance (in shares) at Jul. 31, 2018 |  | 10,070,459 | 62,765,824 |  |
Ending Balance at Jul. 31, 2018 | $ 1,937,741 | $ (343,728) | $ 6,277 | $ 252,204 | $ 2,022,988

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