Share-Based Compensation - Additional Information (Detail) (USD $) | 3 Months Ended | 0 Months Ended |
2-May-15 | 3-May-14 | Aug. 01, 2014 | Feb. 01, 2015 |
Equity_Plan |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | | | | |
Number of equity incentive plan | 1 | | | |
Maximum disposal restricted percentage of RSU | 50.00% | | | |
Stock options grant to each non-employee director | 85,000 | | | |
Non-employee director is entitled to an annual cash retainer | $7,000 | | | |
Non-employee director received restricted stock award value | 20,000 | | | |
Options granted weighted average fair value per share | $2.43 | $2.93 | | |
Reservation of shares under Stock Purchase Plan | 247,500 | | | |
Stock options granted | 722,940 | | | 656,011 |
Employee Stock Purchase Plan [Member] | | | | |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | | | | |
Employee Stock Purchase Plan discount rate | 15.00% | | | |
Shares purchase under Employee Stock Purchase Plan | 732 | 815 | | |
Stock options granted | 56,273 | | | |
Non-Employee Director [Member] | | | | |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | | | | |
Non-employee director is entitled to an annual cash retainer additional | 500 | | | |
Chairman of Board [Member] | | | | |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | | | | |
Amount of Chair Retainer payable | | | 6,000 | |
Chair of Audit Committee [Member] | | | | |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | | | | |
Amount of Chair Retainer payable | | | 4,000 | |
Chair of Compensation Committee [Member] | | | | |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | | | | |
Amount of Chair Retainer payable | | | 4,000 | |
2013 Restricted Stock Units (RSUs) [Member] | First Anniversary [Member] | | | | |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | | | | |
Restricted stock unit vested percentage | 50.00% | | | |
2013 Restricted Stock Units (RSUs) [Member] | Second Anniversary [Member] | | | | |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | | | | |
Restricted stock unit vested percentage | 50.00% | | | |
Equity Incentive Plan [Member] | | | | |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | | | | |
Aggregate shares authorized for awards under the Plan | 1,000,000 | | | |
Shares available for grant under the Plan | 124,302 | | | |
Equity Incentive Plan [Member] | Non-Employee Director [Member] | | | | |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | | | | |
Option expiration period | 10 years | | | |
Stock options grant to each non-employee director | 5,000 | | | |
Restricted Stock [Member] | Non-Employee Director [Member] | | | | |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | | | | |
Award vesting period | 12 months | | | |
Stock Options [Member] | | | | |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | | | | |
Award vesting period | 4 years | | | |
Unrecognized compensation expense related to unvested options | 586,000 | | | |
Unrecognized compensation expense related to unvested options, recognize date | Through March 2019 | | | |
2014 Restricted Stock Units (RSUs) [Member] | | | | |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | | | | |
Number of accelerated vesting shares | 0 | | | 4,166 |
Unrecognized compensation expense related to unvested options, recognize date | Through April 2016 | | | |
Unrecognized compensation expense related to unvested RSUs and RSAs | $175,000 | | | |
2014 Restricted Stock Units (RSUs) [Member] | Officer [Member] | | | | |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | | | | |
Cumulative budgeted net sales target measurement period | 2014 through 2016 | | | |
2014 Restricted Stock Units (RSUs) [Member] | Officer [Member] | Net Sales Target [Member] | | | | |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | | | | |
Restricted stock unit vested percentage | 50.00% | | | |
2014 Restricted Stock Units (RSUs) [Member] | Officer [Member] | ORONA Target [Member] | | | | |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | | | | |
Restricted stock unit vested percentage | 25.00% | | | |
2014 Restricted Stock Units (RSUs) [Member] | Officer [Member] | Third Anniversary [Member] | | | | |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | | | | |
Restricted stock unit vested percentage | 25.00% | | | |