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Stock-Based Compensation (Detail) (USD $) | 3 Months Ended | 0 Months Ended | 3 Months Ended | 0 Months Ended | 3 Months Ended
--- | --- | --- | --- | --- | ---
Aug. 03, 2014 Stock Options [Member] | Jul. 28, 2013 Stock Options [Member] | Aug. 03, 2014 Stock Options [Member] Selling, general and administrative expense [Member] | Jul. 28, 2013 Stock Options [Member] Selling, general and administrative expense [Member] | Aug. 03, 2014 Time Vested Restricted Stock Awards [Member] | Jul. 28, 2013 Time Vested Restricted Stock Awards [Member] | Aug. 03, 2014 Time Vested Restricted Stock Awards [Member] Selling, general and administrative expense [Member] | Jul. 28, 2013 Time Vested Restricted Stock Awards [Member] Selling, general and administrative expense [Member] | Jun. 24, 2014 Performance Based Restricted Stock Units [Member] | Jun. 25, 2013 Performance Based Restricted Stock Units [Member] | Jul. 11, 2012 Performance Based Restricted Stock Units [Member] | Aug. 03, 2014 Performance Based Restricted Stock Units [Member] | Jun. 24, 2014 Performance Based Restricted Stock Units [Member] Maximum [Member] | Jun. 25, 2013 Performance Based Restricted Stock Units [Member] Maximum [Member] | Jul. 11, 2012 Performance Based Restricted Stock Units [Member] Maximum [Member] | Aug. 03, 2014 Performance Based Restricted Stock Units [Member] Selling, general and administrative expense [Member] | Jul. 28, 2013 Performance Based Restricted Stock Units [Member] Selling, general and administrative expense [Member] | Aug. 03, 2014 Common Stock Awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of options granted | 0 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of options to purchase common stock outstanding | 153,950 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Weighted average exercise price for options outstanding | $ 6.70 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Weighted average contractual term for options outstanding | 3 years 4 months 24 days |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Aggregate intrinsic value for options outstanding | $ 1,700,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of options exercisable | 153,950 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Weighted average exercise price for options exercisable | $ 6.70 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Weighted average contractual term for options exercisable | 3 years 4 months 24 days |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Aggregate intrinsic value for options exercisable | 1,700,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of options exercised | 0 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Aggregate intrinsic value for options exercised |  | 171,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of unvested stock option | 0 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Unrecognized stock based compensation cost | 0 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based compensation expense |  |  | 0 | 6,000 |  |  | 4,000 | 27,000 |  |  |  |  |  |  |  | 42,000 | 119,000 |
Number of shares granted |  |  |  |  | 0 |  |  |  |  |  |  |  | 102,845 | 72,380 | 120,000 |  |  | 0
Number of shares outstanding and unvested |  |  |  |  | 0 |  |  |  |  |  |  |  |  |  |  |  |  |
Remaining unrecognized compensation cost |  |  |  |  | 0 |  |  |  |  |  |  | 1,300,000 |  |  |  |  |  |
Number of shares vested |  |  |  |  | 61,667 | 61,667 |  |  |  |  |  |  |  |  |  |  |  |
Weighted average fair value of vested shares |  |  |  |  | $ 257,000 | $ 249,000 |  |  |  |  |  |  |  |  |  |  |  |
Weighted average fair value of vested shares, per share |  |  |  |  | $ 4.17 | $ 4.04 |  |  |  |  |  |  |  |  |  |  |  |
Closing price of common stock on the date of grant |  |  |  |  |  |  |  |  | $ 17.70 | $ 17.12 | $ 10.21 |  |  |  |  |  |  |
Vesting period |  |  |  |  |  |  |  |  | 3 years | 3 years | 3 years |  |  |  |  |  |  |
Weighted average period over which unrecognized compensation cost is expected to be recognized |  |  |  |  |  |  |  |  |  |  |  | 2 years 2 months 12 days |  |  |  |  |  |

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- Definition Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5047-113901 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB TOPIC 14.F) -URI http://asc.fasb.org/extlink&oid=27013229&loc=d3e301413-122809 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(1)(i) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 14 -Section F + Details
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- Definition Period which an employee's right to exercise an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + 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 (a)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan). + 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 (c)(2)(iii)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan). + 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 (c)(2)(iii)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date. + 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 (c)(2)(i)-(ii) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period. + 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 (c)(2)(iii)(2) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Fair value of share-based awards for which the grantee gained the right by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash. + 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)(2) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The weighted average fair value as of grant date pertaining to an equity-based award plan other than a stock (or unit) option plan for which the grantee gained the right during the reporting period, by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash in accordance with the terms of the arrangement. + 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 (c)(2)(iii)(2) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Amount of difference between fair value of the underlying shares reserved for issuance and exercise price of vested portions of options outstanding and currently exercisable. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan. + 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 (c)(1)(iii) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of options outstanding and currently exercisable under the stock option plan. + 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 (c)(1)(iii) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Weighted average remaining contractual term for vested portions of options outstanding and currently exercisable or convertible, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Net number of share options (or share units) granted during the period. + 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 (c)(1)(iv)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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