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SHAREHOLDERS’ EQUITY - Additional Information (Details) | 12 Months Ended
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Jul. 30, 2016 USD ($) class_common_stock plan vote $ / shares shares | Jul. 25, 2015 USD ($) $ / shares shares | Jul. 26, 2014 USD ($)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Number of common stock classes | class_common_stock | 2 |  |
Common stock cash dividends, percent Class A is entitled greater than Class B | 54.00% |  |
Preferred stock shares authorized (in shares) | shares | 10,000,000 | 10,000,000 |
Preferred stock shares issued (in shares) | shares | 0 |  |
Number of share-based compensation plans | plan | 3 |  |
Compensation cost charged against income | $ 3,195,000 | $ 3,169,000 | $ 3,229,000
Income tax benefit recognized | $ 1,131,000 | $ 1,134,000 | 1,148,000
Weighted-average remaining contractual term of options outstanding | 5 years 8 months 12 days |  |
Weighted-average remaining contractual term of options exercisable | 3 years 6 months |  |
Aggregate intrinsic value of options outstanding | $ 1,654,000 |  |
Aggregate intrinsic value of options exercisable | $ 1,002,000 |  |
Weighted-average grant date fair value of options granted | $ / shares | $ 4.79 | $ 4.32 |
Intrinsic value of options exercised | $ 70,000 | $ 1,090,000 | 113,000
Fair value of restricted shares vested | 549,000 | 576,000 | 8,663,000
Unrecognized compensation costs related to nonvested stock options and restricted stock granted | $ 2,134,000 |  |
Weighted-average period of compensation cost expected to be recognized | 8 months 16 days |  |
Cash received from option exercises under share-based compensation arrangements | $ 813,000 | 2,392,000 | 217,000
Actual tax benefit realized | $ 29,000 | $ 424,000 | $ 46,000
Class A Common Stock |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Number of votes entitled per share | vote | 1 |  |
Authorized amount of share repurchase program | $ 5,000,000 |  |
Stock Repurchased During Period, Value | $ 978,000 |  |
Class A Common Stock | 2004 Plan |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Number of shares authorized | shares | 1,200,000 |  |
Vesting period | 3 years |  |
Expiration period | 10 years |  |
Shares remaining for future grants (in shares) | shares | 0 |  |
Class A Common Stock | 2004 Plan | Restricted Stock |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Vesting period | 3 years |  |
Class A Common Stock | 2010 Plan |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Number of shares authorized | shares | 1,200,000 |  |
Vesting period | 3 years |  |
Expiration period | 10 years |  |
Shares remaining for future grants (in shares) | shares | 385,291 |  |
Class A Common Stock | 2010 Plan | Restricted Stock |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Vesting period | 3 years |  |
Class B Common Stock |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Number of votes entitled per share | vote | 10 |  |
Percentage of voting power (greater than) | 50.00% |  |

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- Definition The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (d)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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