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COMMON STOCK AND STOCK-BASED COMPENSATION - RSA and RSU Activity (Details) (USD $) In Thousands, except Share data, unless otherwise specified | 3 Months Ended | 12 Months Ended |  | 12 Months Ended |  | 12 Months Ended |  | 3 Months Ended | 1 Months Ended |  |
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Jul. 27, 2013 2010 Stock Plan Restricted Stock Awards (RSA's) | Jul. 27, 2013 2010 Stock Plan Restricted Stock Units (RSUs) | Apr. 30, 2011 2010 Stock Plan Restricted Stock Awards (RSA's) and Restricted Stock Units (RSU's) Cliff vesting | Jul. 27, 2013 2010 Stock Plan Restricted Stock Awards (RSA's) and Restricted Stock Units (RSU's) Cliff vesting | Jul. 27, 2013 2010 Stock Plan Restricted Stock Awards (RSA's) and Restricted Stock Units (RSU's) Cliff vesting Target | Apr. 30, 2011 2010 Stock Plan Restricted Stock Awards (RSA's) and Restricted Stock Units (RSU's) Equal annual installments | Jul. 27, 2013 2010 Stock Plan Restricted Stock Awards (RSA's) and Restricted Stock Units (RSU's) Equal annual installments | Apr. 28, 2012 2010 Stock Plan Restricted Stock Awards (RSA's) and Restricted Stock Units (RSU's) One-third per year, beginning in fiscal 2015, performance based | Jul. 27, 2013 2010 Stock Plan Restricted Stock Awards (RSA's) and Restricted Stock Units (RSU's) One-third per year, beginning in fiscal 2015, performance based | Jul. 27, 2013 2010 Stock Plan Restricted Stock Awards (RSA's) and Restricted Stock Units (RSU's) One-third per year, beginning in fiscal 2015, performance based Target | Jul. 27, 2013 2007 Stock Plan Restricted Stock Awards (RSA's) | Apr. 30, 2007 2007 Stock Plan Restricted Stock Units (RSUs) | Jul. 27, 2013 2007 Stock Plan Restricted Stock Units (RSUs) | Apr. 30, 2007 2007 Stock Plan Converted from RSA's to RSU's
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shares outstanding |  |  |  |  |  |  |  |  |  |  |  |  |  | 225,000
Award vesting period |  |  | 5 years |  |  | 5 years |  |  |  |  |  |  |  |
Annual award vesting percentage |  |  |  |  |  |  |  | 33.30% |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Unvested and unissued - beginning balance (in shares) | 700,000 | 120,000 |  |  |  |  |  |  |  |  |  |  |  |
Awarded (in shares) | 0 | 0 | 600,000 |  |  | 300,000 |  | 100,000 |  |  | 27,000 |  |  |
Vested (in shares) | 0 | 0 |  |  |  |  |  |  |  |  |  |  |  |
Forfeited and cancelled (in shares) | 0 | 0 |  |  |  |  |  |  |  |  |  |  |  |
Unvested and unissued - ending balance (in shares) | 700,000 | 120,000 |  |  |  |  |  |  |  |  |  |  |  |
Weighted average value |  |  | $ 9.70 |  |  | $ 9.70 |  | $ 8.10 |  |  |  |  |  |
Unearned compensation expense |  |  |  | $ 2,277 | $ 2,277 |  | $ 353 |  | $ 440 | $ 440 |  |  |  |
CEO's RSU award issuance and delivery conditions, waiting period after termination |  |  |  |  |  |  |  |  |  |  |  | 30 days |  |
Number of non-option equity instruments vested and outstanding |  |  |  |  |  |  |  |  |  |  |  |  | 225,000 |

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