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Stockholders' Equity | 9 Months Ended
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Apr. 30, 2019
Stockholders' Equity Attributable to Parent [Abstract] |
Stockholders' Equity Note Disclosure [Text Block] | Stockholders' Equity The following table illustrates the changes in the balances of each component of stockholders' equity for the three months ended April 30, 2019:
|  | Common Stock |  | Additional Paid-In Capital |  | Retained Earnings |  | Treasury Stock |  | Accumulated Other Comprehensive Loss |  | Total Stockholders' Equity
Balances at January 31, 2019 |  | $ | 548 |  |  | $ | 328,978 |  |  | $ | 588,918 |  |  | $ | (54,498 | ) |  | $ | (60,565 | ) |  | $ | 803,381 |
Net income |  | — |  |  | — |  |  | 34,781 |  |  | — |  |  | — |  |  | 34,781 |
Other comprehensive loss, net of tax |  | — |  |  | — |  |  | — |  |  | — |  |  | (7,881 | ) |  | (7,881 | )
Issuance of shares of Class A Common Stock under stock plan |  | — |  |  | (1,433 | ) |  | — |  |  | 4,415 |  |  | — |  |  | 2,982 |
Stock-based compensation expense |  | — |  |  | 2,506 |  |  | — |  |  | — |  |  | — |  |  | 2,506 |
Cash dividends on Common Stock |  |  |  |  |  |  |  |  |  |  |  |
Class A — $0.21 per share |  | — |  |  | — |  |  | (10,473 | ) |  | — |  |  | — |  |  | (10,473 | )
Class B — $0.21 per share |  | — |  |  | — |  |  | (752 | ) |  | — |  |  | — |  |  | (752 | )
Balances at April 30, 2019 |  | $ | 548 |  |  | $ | 330,051 |  |  | $ | 612,474 |  |  | $ | (50,083 | ) |  | $ | (68,446 | ) |  | $ | 824,544 |
The following table illustrates the changes in the balances of each component of stockholders' equity for the nine months ended April 30, 2019:
|  | Common Stock |  | Additional Paid-In Capital |  | Retained Earnings |  | Treasury Stock |  | Accumulated Other Comprehensive Loss |  | Total Stockholders' Equity
Balances at July 31, 2018 |  | $ | 548 |  |  | $ | 325,631 |  |  | $ | 553,454 |  |  | $ | (71,120 | ) |  | $ | (56,401 | ) |  | $ | 752,112 |
Net income |  | — |  |  | — |  |  | 94,645 |  |  | — |  |  | — |  |  | 94,645 |
Other comprehensive loss, net of tax |  | — |  |  | — |  |  | — |  |  | — |  |  | (12,045 | ) |  | (12,045 | )
Issuance of shares of Class A Common Stock under stock plan |  | — |  |  | (6,100 | ) |  | — |  |  | 24,219 |  |  | — |  |  | 18,119 |
Tax benefit and withholdings from deferred compensation distributions |  | — |  |  | 209 |  |  | — |  |  | — |  |  | — |  |  | 209 |
Stock-based compensation expense |  | — |  |  | 10,311 |  |  | — |  |  | — |  |  | — |  |  | 10,311 |
Purchase of shares of Class A Common Stock |  | — |  |  | — |  |  | — |  |  | (3,182 | ) |  | — |  |  | (3,182 | )
Cumulative adjustment for ASU 2014-09, net of tax (Note B) |  | — |  |  | — |  |  | (2,137 | ) |  | — |  |  | — |  |  | (2,137 | )
Cash dividends on Common Stock |  |  |  |  |  |  |  |  |  |  |  |
Class A — $0.64 per share |  | — |  |  | — |  |  | (31,291 | ) |  | — |  |  | — |  |  | (31,291 | )
Class B — $0.62 per share |  | — |  |  | — |  |  | (2,197 | ) |  | — |  |  | — |  |  | (2,197 | )
Balances at April 30, 2019 |  | $ | 548 |  |  | $ | 330,051 |  |  | $ | 612,474 |  |  | $ | (50,083 | ) |  | $ | (68,446 | ) |  | $ | 824,544 |
The following table illustrates the changes in the balances of each component of stockholders' equity for the three months ended April 30, 2018:
|  | Common Stock |  | Additional Paid-In Capital |  | Retained Earnings |  | Treasury Stock |  | Accumulated Other Comprehensive Loss |  | Total Stockholders' Equity
Balances at January 31, 2018 |  | $ | 548 |  |  | $ | 325,733 |  |  | $ | 515,872 |  |  | $ | (75,090 | ) |  | $ | (35,090 | ) |  | $ | 731,973 |
Net income |  | — |  |  | — |  |  | 26,000 |  |  | — |  |  | — |  |  | 26,000 |
Other comprehensive loss, net of tax |  | — |  |  | — |  |  | — |  |  | — |  |  | (13,056 | ) |  | (13,056 | )
Issuance of shares of Class A Common Stock under stock plan |  | — |  |  | (16 | ) |  | — |  |  | 77 |  |  | — |  |  | 61 |
Stock-based compensation expense |  | — |  |  | 1,684 |  |  | — |  |  | — |  |  | — |  |  | 1,684 |
Purchase of shares of Class A Common Stock |  | — |  |  | — |  |  | — |  |  | (1,278 | ) |  | — |  |  | (1,278 | )
Cash dividends on Common Stock |  |  |  |  |  |  |  |  |  |  |  |
Class A — $0.21 per share |  | — |  |  | — |  |  | (10,003 | ) |  | — |  |  | — |  |  | (10,003 | )
Class B — $0.21 per share |  | — |  |  | — |  |  | (734 | ) |  | — |  |  | — |  |  | (734 | )
Balances at April 30, 2018 |  | $ | 548 |  |  | $ | 327,401 |  |  | $ | 531,135 |  |  | $ | (76,291 | ) |  | $ | (48,146 | ) |  | $ | 734,647 |
The following table illustrates the changes in the balances of each component of stockholders' equity for the nine months ended April 30, 2018:
|  | Common Stock |  | Additional Paid-In Capital |  | Retained Earnings |  | Treasury Stock |  | Accumulated Other Comprehensive Loss |  | Total Stockholders' Equity
Balances at July 31, 2017 |  | $ | 548 |  |  | $ | 322,608 |  |  | $ | 507,136 |  |  | $ | (85,470 | ) |  | $ | (44,682 | ) |  | $ | 700,140 |
Net income |  | — |  |  | — |  |  | 56,109 |  |  | — |  |  | — |  |  | 56,109 |
Other comprehensive loss, net of tax |  | — |  |  | — |  |  | — |  |  | — |  |  | (3,464 | ) |  | (3,464 | )
Issuance of shares of Class A Common Stock under stock plan |  | — |  |  | (3,001 | ) |  | — |  |  | 10,879 |  |  | — |  |  | 7,878 |
Tax benefit and withholdings from deferred compensation distributions |  | — |  |  | 213 |  |  | — |  |  | (422 | ) |  | — |  |  | (209 | )
Stock-based compensation expense |  | — |  |  | 7,581 |  |  | — |  |  | — |  |  | — |  |  | 7,581 |
Purchase of shares of Class A Common Stock |  | — |  |  | — |  |  | — |  |  | (1,278 | ) |  | — |  |  | (1,278 | )
Cash dividends on Common Stock |  |  |  |  |  |  |  |  |  |  |  |
Class A — $0.62 per share |  | — |  |  | — |  |  | (29,970 | ) |  | — |  |  | — |  |  | (29,970 | )
Class B — $0.60 per share |  | — |  |  | — |  |  | (2,140 | ) |  | — |  |  | — |  |  | (2,140 | )
Balances at January 31, 2018 |  | $ | 548 |  |  | $ | 327,401 |  |  | $ | 531,135 |  |  | $ | (76,291 | ) |  | $ | (48,146 | ) |  | $ | 734,647 |

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- References No definition available. + Details
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- Definition The entire disclosure for shareholders' equity comprised of portions attributable to the parent entity and noncontrolling interest, including other comprehensive income. Includes, but is not limited to, balances of common stock, preferred stock, additional paid-in capital, other capital and retained earnings, accumulated balance for each classification of other comprehensive income and amount of comprehensive income. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -URI http://asc.fasb.org/topic&trid=2208762 + Details
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