Description of Business and Summary of Significant Accounting Policies Stock-Based Compensation Notes (Details) (USD $)	3 Months Ended		12 Months Ended					3 Months Ended			12 Months Ended				3 Months Ended				12 Months Ended				12 Months Ended
	Feb. 28, 2014	May 31, 2012	Feb. 28, 2014	Feb. 28, 2013 Rate	Feb. 29, 2012 Rate	Dec. 31, 2012	May 26, 2011	Feb. 28, 2014 Employee Stock Option [Member]	May 31, 2012 Employee Stock Option [Member]	Nov. 30, 2009 Employee Stock Option [Member]	Feb. 28, 2014 Employee Stock Option [Member]	Feb. 28, 2013 Employee Stock Option [Member]	Feb. 29, 2012 Employee Stock Option [Member]	Feb. 28, 2011 Employee Stock Option [Member]	Feb. 28, 2014 Warrant [Member]	May 31, 2012 Warrant [Member]	Feb. 28, 2014 Restricted Stock [Member]	May 31, 2012 Restricted Stock [Member]	Feb. 28, 2014 Restricted Stock [Member]	Feb. 28, 2013 Restricted Stock [Member]	Feb. 29, 2012 Restricted Stock [Member]	Feb. 28, 2011 Restricted Stock [Member]	Feb. 28, 2014 Employee Stock Option [Member]	Feb. 28, 2013 Employee Stock Option [Member]	Feb. 29, 2012 Employee Stock Option [Member]	Feb. 28, 2014 Restricted Stock [Member]	Feb. 28, 2013 Restricted Stock [Member]	Feb. 29, 2012 Restricted Stock [Member]	Feb. 28, 2014 Selling and Marketing Expense [Member] Employee Stock Option [Member]	Feb. 28, 2013 Selling and Marketing Expense [Member] Employee Stock Option [Member]	Feb. 29, 2012 Selling and Marketing Expense [Member] Employee Stock Option [Member]	Feb. 28, 2014 General and Administrative Expense [Member] Employee Stock Option [Member]	Feb. 28, 2013 General and Administrative Expense [Member] Employee Stock Option [Member]	Feb. 29, 2012 General and Administrative Expense [Member] Employee Stock Option [Member]	Feb. 28, 2014 Engineering and Technical Support [Member] Employee Stock Option [Member]	Feb. 28, 2013 Engineering and Technical Support [Member] Employee Stock Option [Member]	Feb. 29, 2012 Engineering and Technical Support [Member] Employee Stock Option [Member]	Feb. 28, 2014 Cost of Sales [Member] Employee Stock Option [Member]	Feb. 28, 2013 Cost of Sales [Member] Employee Stock Option [Member]	Feb. 29, 2012 Cost of Sales [Member] Employee Stock Option [Member]	Feb. 28, 2014 6.79 [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Intrinsic Value	$ 1,271,000		$ 1,271,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Total Intrinsic Value			4,671,000	1,845,000	387,000
Allocated Share-based Compensation Expense, Net of Tax			228	113	505
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Dividend Rate				0.00%	0.00%
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant	1,700,000		1,700,000
Allocated Share-based Compensation Expense			641,000	435,000	1,082,000																		363,000	182,000	828,000	278,000	253,000	253,000	50,000	25,000	116,000	300,000	149,000	681,000	3,000	3,000	8,000	10,000	5,000	23,000
Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized								$ 0			$ 0	$ 363,000					$ 1,127,000		$ 1,127,000
Stock Issued During Period, Shares, Restricted Stock Award, Gross	84,588	100,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross								0	246,250	256,250	0	273,750	268,750		17,500	22,500			84,588	0	100,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Exercise Price						$ 6.79	$ 7.75	$ 6.79			$ 6.79	$ 6.85	$ 6.72	$ 6.40			$ 13.62		$ 13.62	$ 7.60	$ 7.60	$ 0.00																			$ 6.79
Difference Between Option Grant Price and Stock Fair Value						$ 0.25	$ 0.25
SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableContractualTerm	2 years 6 months 0 days	2 years 9 months 0 days
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Fair Market Value								$ 1.99	$ 3.08			$ 1.99					$ 13.62	$ 7.60
Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures and Expirations in Period											0	26,250	22,500						0	0	0
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate				51.30%	65.40%
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate				0.32%	0.94%
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term				2 years 6 months 0 days	2 years 9 months 0 days
Allocated Share Based Compensation Expense Per Diluted Share			$ 0.01	$ 0.00	$ 0.02
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Upper Range Limit																																									$ 6.79
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Number of Exercisable Options																																									79,204
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Remaining Contractual Term																																									1 year 4 months 0 days