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Stock-Based Compensation - Narrative (Detail) - USD ($) |  |  |  |  |  |  |  |  | 3 Months Ended | 9 Months Ended |
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Oct. 03, 2016 | Jul. 14, 2016 | Oct. 01, 2015 | Jul. 15, 2015 | Mar. 03, 2015 | Jun. 24, 2014 | Jun. 25, 2013 | Jul. 11, 2012 | Jan. 29, 2017 | Jul. 31, 2016 | Aug. 02, 2015 | Jan. 29, 2017 | Jan. 31, 2016 | Sep. 16, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of options granted |  |  |  |  |  |  |  |  | 0 |  |  | 0 |  |
2015 Equity Incentive Plan [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of common stock authorized for issuance |  |  |  |  |  |  |  |  |  |  |  |  |  | 1,200,000
Number of shares available for future equity based grants |  |  |  |  |  |  |  |  | 959,942 |  |  | 959,942 |  |
2007 Equity Incentive Plan [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of shares available for future equity based grants |  |  |  |  |  |  |  |  |  |  |  |  |  | 0
Performance Based Restricted Stock Units [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Remaining unrecognized compensation cost |  |  |  |  |  |  |  |  | $ 4,800,000 |  |  | $ 4,800,000 |  |
Weighted average period over which unrecognized compensation cost is expected to be recognized |  |  |  |  |  |  |  |  |  |  |  | 1 year 10 months 24 days |  |
Performance Based Restricted Stock Units [Member] | Selling, General and Administrative Expenses [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based compensation expense |  |  |  |  |  |  |  |  |  |  |  | $ 2,500,000 | $ 1,900,000 |
Performance Based Restricted Stock Units [Member] | Employee [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Vesting period |  | 3 years |  | 3 years |  | 3 years | 3 years | 3 years |  |  |  |  |  |
Closing price of common stock |  | $ 28 |  | $ 32.23 |  | $ 17.70 | $ 17.12 | $ 10.21 |  |  |  |  |  |
Performance Based Restricted Stock Units [Member] | Non-employee [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Vesting period |  | 3 years |  | 3 years |  |  |  |  |  |  |  |  |  |
Closing price of common stock |  |  |  |  |  |  |  |  |  |  |  | $ 33.80 |  |
Number of shares unvested |  |  |  |  |  |  |  |  | 16,000 |  |  | 16,000 |  |
Performance Based Restricted Stock Units [Member] | Requisite Service Period for 16,000 Restricted Stock Units [Member] | Non-employee [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Vesting period |  |  |  |  |  |  |  |  |  |  |  | 28 months |  |
Performance Based Restricted Stock Units [Member] | Fiscal Year 2015 [Member] | Non-employee [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of shares vested |  |  |  |  |  |  |  |  |  | 12,000 |  |  |  |
Weighted average fair value of vested shares |  |  |  |  |  |  |  |  |  | $ 345,000 |  |  |  |
Weighted average fair value of vested shares, per share |  |  |  |  |  |  |  |  |  | $ 28.77 |  |  |  |
Performance Based Restricted Stock Units [Member] | Fiscal Year 2014 [Member] | Employee [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of shares vested |  |  |  |  |  |  |  |  |  | 37,192 |  |  |  |
Weighted average fair value of vested shares |  |  |  |  |  |  |  |  |  | $ 637,000 |  |  |  |
Weighted average fair value of vested shares, per share |  |  |  |  |  |  |  |  |  | $ 17.12 |  |  |  |
Performance Based Restricted Stock Units [Member] | Fiscal Year 2013 [Member] | Employee [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of shares vested |  |  |  |  |  |  |  |  |  |  | 115,855 |  |  |
Weighted average fair value of vested shares |  |  |  |  |  |  |  |  |  |  | $ 1,200,000 |  |  |
Weighted average fair value of vested shares, per share |  |  |  |  |  |  |  |  |  |  | $ 10.21 |  |  |
Performance Based Restricted Stock Units [Member] | Maximum [Member] | Employee [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Maximum number of shares granted |  | 107,880 |  | 107,554 |  | 102,845 | 72,380 | 120,000 |  |  |  |  |  |
Performance Based Restricted Stock Units [Member] | Maximum [Member] | Non-employee [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Maximum number of shares granted |  | 11,549 |  | 10,364 | 28,000 |  |  |  |  |  |  |  |  |
Incentive Stock Option Awards [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of options to purchase common stock outstanding |  |  |  |  |  |  |  |  | 78,600 |  |  | 78,600 |  |
Number of options exercisable |  |  |  |  |  |  |  |  | 78,600 |  |  | 78,600 |  |
Weighted average exercise price for options outstanding |  |  |  |  |  |  |  |  | $ 8.43 |  |  | $ 8.43 |  |
Weighted average exercise price for options exercisable |  |  |  |  |  |  |  |  | $ 8.43 |  |  | $ 8.43 |  |
Weighted average contractual term for options outstanding |  |  |  |  |  |  |  |  |  |  |  | 7 months 6 days |  |
Weighted average contractual term for options exercisable |  |  |  |  |  |  |  |  |  |  |  | 7 months 6 days |  |
Aggregate intrinsic value for options outstanding |  |  |  |  |  |  |  |  | $ 2,000,000 |  |  | $ 2,000,000 |  |
Aggregate intrinsic value for options exercisable |  |  |  |  |  |  |  |  | $ 2,000,000 |  |  | 2,000,000 |  |
Aggregate intrinsic value for options exercised |  |  |  |  |  |  |  |  |  |  |  | $ 128,000.0 | 1,000,000 |
Number of unvested stock option |  |  |  |  |  |  |  |  | 0 |  |  | 0 |  |
Unrecognized stock based compensation cost |  |  |  |  |  |  |  |  | $ 0 |  |  | $ 0 |  |
Share-based compensation expense |  |  |  |  |  |  |  |  |  |  |  | 0 | 0 |
Common Stock Awards [Member] | Selling, General and Administrative Expenses [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based compensation expense |  |  |  |  |  |  |  |  |  |  |  | $ 143,000 | 95,000 |
Common Stock Awards [Member] | Outside Directors [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Maximum number of shares granted | 4,800 |  | 3,000 |  |  |  |  |  |  |  |  |  |  |
Vesting period | 0 days |  | 0 days |  |  |  |  |  |  |  |  |  |  |
Closing price of common stock | $ 29.80 |  | $ 31.77 |  |  |  |  |  |  |  |  |  |  |
Time Vested Restricted Stock Units [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based compensation expense |  |  |  |  |  |  |  |  |  |  |  |  | $ 0 |
Vesting period |  |  |  |  |  |  |  |  |  |  |  | 4 months 15 days |  |
Unrecognized stock based compensation cost |  |  |  |  |  |  |  |  | $ 14,000 |  |  | $ 14,000 |  |
Time Vested Restricted Stock Units [Member] | Selling, General and Administrative Expenses [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based compensation expense |  |  |  |  |  |  |  |  |  |  |  | $ 20,000 |  |
Time Vested Restricted Stock Units [Member] | Employee [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Maximum number of shares granted |  | 1,200 |  |  |  |  |  |  |  |  |  |  | 0 |
Vesting period |  | 11 months |  |  |  |  |  |  |  |  |  |  |  |
Closing price of common stock |  | $ 28 |  |  |  |  |  |  |  |  |  |  |  |

X
- Definition The weighted average fair value at the end of the reporting period 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 No definition available. + Details
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- Definition The fair value as of end of vesting period 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 No definition available. + Details
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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 S99 -Paragraph 1 -Subparagraph (SAB Topic 14.F) -URI http://asc.fasb.org/extlink&oid=27013229&loc=d3e301413-122809 Reference 2: 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 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 + 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 Unrecognized cost of unvested share-based awards, other than options, awarded to employees as compensation. + References No definition available. + Details
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- Definition Unrecognized cost of unvested options awarded to employees as compensation. + References No definition available. + 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 Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + 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 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 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 Amount of accumulated difference between fair value of underlying shares on dates of exercise and exercise price on options exercised (or share units converted) into 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 -Subparagraph (d)(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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- Definition Amount by which the current fair value of the underlying stock exceeds the exercise price of options outstanding. + 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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