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SHAREHOLDERS’ EQUITY - Additional Information (Details) | 3 Months Ended | 12 Months Ended
--- | --- | ---
Jan. 26, 2013 USD ($) $ / shares | Jul. 25, 2015 USD ($) class_common_stock plan vote $ / shares shares | Jul. 26, 2014 USD ($) $ / shares shares | Jul. 27, 2013 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 | 0 |
Number of share-based compensation plans | plan |  | 3 |  |
Compensation cost charged against income |  | $ 3,169,000 | $ 3,229,000 | $ 3,222,000
Income tax benefit recognized |  | $ 1,134,000 | $ 1,148,000 | 1,140,000
Weighted-average remaining contractual term of options outstanding |  | 6 years 6 months |  |
Weighted-average remaining contractual term of options exercisable |  | 4 years 7 months 6 days |  |
Aggregate intrinsic value of options outstanding |  | $ 417,000 |  |
Aggregate intrinsic value of options exercisable |  | $ 402,000 |  |
Weighted-average grant date fair value of options granted | $ / shares |  | $ 4.32 | $ 6.41 |
Intrinsic value of options exercised |  | $ 1,090,000 | $ 113,000 | 1,344,000
Fair value of restricted shares vested |  | 576,000 | 8,663,000 | 60,000
Unrecognized compensation costs related to nonvested stock options and restricted stock granted |  | $ 5,408,000 |  |
Weighted-average period of compensation cost expected to be recognized |  | 1 year 8 months 12 days |  |
Cash received from option exercises under share-based compensation arrangements |  | $ 2,392,000 | 217,000 | 1,742,000
Actual tax benefit realized |  | $ 424,000 | $ 46,000 | $ 537,000
Special dividends | $ 12,009,000 |  |  |
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 |  |
Number of shares repurchased (in shares) | shares |  | 0 |  |
Special dividends per share (in dollars per share) | $ / shares | $ 1.00 |  |  |
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 |  | 364,855 |  |
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% |  |
Special dividends per share (in dollars per share) | $ / shares | $ 0.65 |  |  |

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