v2.4.0.6

Stock-Based Compensation - Additional Information (Detail) (USD $) | 3 Months Ended |  | 1 Months Ended |  | 1 Months Ended | 3 Months Ended | 1 Months Ended | 3 Months Ended | 1 Months Ended | 9 Months Ended | 1 Months Ended | 3 Months Ended | 1 Months Ended | 3 Months Ended |  | 1 Months Ended | 3 Months Ended | 1 Months Ended | 3 Months Ended | 1 Months Ended | 3 Months Ended
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May 04, 2013 | Apr. 28, 2012 | May 04, 2013 Cost of goods sold | Apr. 28, 2012 Cost of goods sold | May 04, 2013 Selling, General and Administrative Expense | Apr. 28, 2012 Selling, General and Administrative Expense | Jun. 14, 2006 1996 Equity Incentive Plan | Jun. 14, 2006 1996 Equity Incentive Plan Maximum | Jun. 05, 2012 2006 Equity Incentive Plan | Jun. 05, 2012 2006 Equity Incentive Plan Maximum | Mar. 31, 2012 2006 Equity Incentive Plan Chief Executive Officer | Mar. 31, 2011 2006 Equity Incentive Plan Chief Executive Officer | May 04, 2013 2006 Equity Incentive Plan Chief Executive Officer | Apr. 28, 2012 2006 Equity Incentive Plan Chief Executive Officer | May 23, 2013 2006 Equity Incentive Plan Subsequent Event Chief Executive Officer | May 04, 2013 2006 Equity Incentive Plan Restricted Stock | Apr. 28, 2012 2006 Equity Incentive Plan Restricted Stock | Apr. 30, 2012 2006 Equity Incentive Plan Restricted Stock Independent consultant | Oct. 27, 2012 2006 Equity Incentive Plan Restricted Stock Independent consultant | Mar. 31, 2012 2006 Equity Incentive Plan Restricted Stock Non Employee Director | Jun. 30, 2011 2006 Equity Incentive Plan Restricted Stock Non Employee Director | Apr. 28, 2012 2006 Equity Incentive Plan Restricted Stock Non Employee Director | Apr. 28, 2012 2006 Equity Incentive Plan Employee Stock Option | Mar. 31, 2011 2006 Equity Incentive Plan Employee Stock Option Employees | May 04, 2013 2006 Equity Incentive Plan Employee Stock Option Employees | May 04, 2013 2006 Equity Incentive Plan Employee Stock Option Accelerated Vesting of Stock Options Employees | Jun. 05, 2012 1996 NEDSOP | Jun. 05, 2012 1996 NEDSOP Maximum | May 04, 2013 2012 Equity Incentive Plan | May 04, 2013 2012 Equity Incentive Plan Maximum | May 04, 2013 2012 Equity Incentive Plan Minimum | May 04, 2013 2012 Equity Incentive Plan Minimum Persons possessing 10% or more of voting power | Jun. 30, 2012 2012 Equity Incentive Plan Restricted Stock Non Employee Director | May 04, 2013 2012 Equity Incentive Plan Restricted Stock Non Employee Director | Jun. 30, 1996 ESPP | May 04, 2013 ESPP | Apr. 28, 2012 ESPP
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of shares available for grant |  |  |  |  |  |  | 732,456 |  | 942,602 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 34,976 |  | 4,676,349 |  |  |  |  |  |  | 652,254 |
Aggregate number of shares authorized for grant |  |  |  |  |  |  | 18,300,000 |  | 3,082,456 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 720,000 |  |  |  |  |  |  |  | 1,350,000 |  |
Options, expiration period |  |  |  |  |  |  |  | 10 years |  | 10 years |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 10 years |  | 8 years |  |  |  |  |  |  |
Exercise price percentage on fair market value of common stock on date of grant |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 100.00% | 110.00% |  |  |  |  |
Number of additional shares authorized for grant |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 3,100,000 |  |  |  |  |  |  |  |
Stock Purchase Plan discount |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 15.00% |  |
Stock-based compensation expense | $ 960,000 | $ 1,001,000 | $ 248,000 | $ 161,000 | $ 700,000 | $ 800,000 |  |  |  |  |  |  |  |  |  |  |  |  | $ 25,000 |  |  | $ 49,000 |  |  | $ 1,100,000 | $ 100,000 |  |  |  |  |  |  |  | $ 50,000 |  | $ 89,000 | $ 42,000
Award grants in period |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 2,525 |  | 515 | 25,387 |  |  |  |  |  |  |  |  |  |  |  | 21,008 |  |  |  |
Vesting period |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 4 years |  |  |  |  |  |  |  |  |  | 1 year |  |  |
Number of options granted | 20,000 |  |  |  |  |  |  |  |  |  | 100,000 | 500,000 |  |  |  |  |  |  |  |  |  |  |  | 214,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Number of options vested |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 500,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total fair value of shares vested | 1,400,000 | 900,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Unrecognized expense | $ 5,300,000 | $ 8,000,000 |  |  |  |  |  |  |  |  |  |  | $ 132,000 | $ 319,000 |  | $ 17,000 | $ 38,000 |  |  |  |  |  | $ 400,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Unrecognized expense, weighted average recognition period | 2 years 4 months 10 days | 2 years 11 months 12 days |  |  |  |  |  |  |  |  |  |  | 2 years 11 months 1 day | 3 years 11 months 1 day |  | 1 month 2 days | 1 month 17 days |  |  |  |  |  | 2 years 11 months 1 day |  |  |  |  |  |  |  |  |  |  |  |  |  |
Weighted average fair value at grant date |  |  |  |  |  |  |  |  |  |  |  |  | $ 3.44 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |

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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 2 -Subparagraph (h)(1)(i) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph A240 -Subparagraph g(1) -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 3: 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 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 14 -Section F Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph 64 -Subparagraph b -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 6: 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=6793087&loc=d3e301413-122809 + Details
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- Definition As of the balance sheet date, the aggregate unrecognized cost of equity-based awards made to employees under equity-based compensation awards that have yet to vest. + 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 (i) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph A240 -Subparagraph h -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
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- Definition Weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, 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 (i) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + 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 discount rate from market value on offering date that participants pay for shares. + 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 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 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph A240 -Subparagraph b(2)(c) -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
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- Definition Number of additional shares authorized for issuance under an established share-based compensation plan. + References No definition available. + Details
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- Definition The maximum number of shares (or other type of equity) originally approved (usually by shareholders and board of directors), net of any subsequent amendments and adjustments, for awards under the equity-based compensation plan. As stock or unit options and equity instruments other than options are awarded to participants, the shares or units remain authorized and become reserved for issuance under outstanding awards (not necessarily vested). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph A240 -Subparagraph a -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable. + 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 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph A240 -Subparagraph b(1)(d) -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
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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 Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph A240 -Subparagraph c(1) -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: 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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- Definition Fair value of options vested. Excludes equity instruments other than options, for example, but not limited to, share units, stock appreciation rights, restricted stock. + References No definition available. + Details
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- Definition Purchase price of common stock expressed as a percentage of its fair market value. + References No definition available. + Details
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