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