Share-Based Compensation - Additional Information (Detail) (USD $)	3 Months Ended			3 Months Ended			0 Months Ended					3 Months Ended
	May 03, 2014 Equity_Plan	May 04, 2013	Jan. 31, 2014	May 03, 2014 Employee Stock Purchase Plan [Member]	May 04, 2013 Employee Stock Purchase Plan [Member]	May 03, 2014 Non-Employee Director [Member]	Aug. 01, 2014 Chairman of Board [Member] Scenario, Forecast [Member]	Aug. 01, 2014 Chair of Audit Committee [Member] Scenario, Forecast [Member]	Aug. 01, 2014 Chair of Compensation Committee [Member] Scenario, Forecast [Member]	May 03, 2014 Equity Incentive Plan [Member]	May 03, 2013 Equity Incentive Plan [Member]	May 03, 2014 Equity Incentive Plan [Member] Non-Employee Director [Member]	May 03, 2014 Restricted Stock [Member] Non-Employee Director [Member]	May 03, 2014 Stock Option [Member]	May 03, 2013 Stock Option [Member]	May 03, 2014 2013 Restricted Stock Units (RSUs) [Member] First Anniversary [Member]	May 03, 2014 2013 Restricted Stock Units (RSUs) [Member] Second Anniversary [Member]	May 03, 2014 2014 Restricted Stock Units (RSUs) [Member]	May 03, 2014 2014 Restricted Stock Units (RSUs) [Member] Officer [Member]	May 03, 2014 2014 Restricted Stock Units (RSUs) [Member] Officer [Member] Net Sales Target [Member]	May 03, 2014 2014 Restricted Stock Units (RSUs) [Member] Officer [Member] ORONA Target [Member]	May 03, 2014 2014 Restricted Stock Units (RSUs) [Member] Officer [Member] Third Anniversary [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of equity incentive plan	1
Award vesting period													12 months		4 years
Aggregate shares authorized for awards under the Plan											1,000,000
Shares available for grant under the Plan										290,609
Restricted stock unit vested percentage																50.00%	50.00%			50.00%	25.00%	25.00%
Maximum disposal restricted percentage of RSU	50.00%
Cumulative budgeted net sales target measurement period																			2014 through 2016
Option expiration period												10 years
Stock options grant to each non-employee director	75,600											5,000
Non-employee director is entitled to an annual cash retainer	$ 7,000
Non-employee director is entitled to an annual cash retainer additional						500
Amount of Chair Retainer payable							6,000	4,000	4,000
Non-employee director received restricted stock award value	20,000
Options granted weighted average fair value per share	$ 2.93	$ 2.79
Unrecognized compensation expense related to unvested options														419,000
Unrecognized compensation expense related to unvested options, recognize date														Through March 2018				Through April 2016
Unrecognized compensation expense related to unvested RSUs and RSAs																		$ 300,000
Employee Stock Purchase Plan discount rate				15.00%
Reservation of shares under Stock Purchase Plan	247,500
Shares purchase under Employee Stock Purchase Plan				815	1,212
Stock options granted	650,472		736,647	59,427