Description of Business and Summary of Significant Accounting Policies Stock-Based Compensation Notes (Details) - USD ($)	9 Months Ended	12 Months Ended
	Nov. 30, 2014	Feb. 28, 2017	Feb. 29, 2016	Feb. 28, 2015	Feb. 28, 2014	Oct. 16, 2014
Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Outstanding, Number		437,443	271,824	202,646	84,588
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period		0	(10,090)
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Intrinsic Value		$ 0
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Total Intrinsic Value		$ 0	$ 128,000	$ 26,000
Allocated Share-based Compensation Expense, Net of Tax			142	$ 102
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Dividend Rate				0.00%
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant		1,226,000
Allocated Share-based Compensation Expense		$ 1,804,000	$ 1,384,000	$ 521,000
Stock Issued During Period, Shares, Restricted Stock Award, Gross		165,619	79,268	118,058	84,588
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Exercise Price						$ 7.76
Difference Between Option Grant Price and Stock Fair Value						$ 0.25
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period				3 years
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate				56.00%
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate				0.80%
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term				3 years
Allocated Share Based Compensation Expense Per Diluted Share			$ 0.01	$ 0.00
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Number of Exercisable Options		116,250
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Exercise Price		$ 7.76
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Remaining Contractual Term		7 months 16 days
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period		165,619	79,268	118,058
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period		0	64,200	15,000
Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Outstanding, Number		56,181,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Exercise Price		$ 13.62
Employee Stock Option [Member]
Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized		$ 0
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross	125,000	0	0	140,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Fair Market Value				$ 2.78
Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures and Expirations in Period		15,000	8,750	0
Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures and Expirations in Period, Weighted Average Exercise Price		$ 7.76	$ 7.76	$ 0.00
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Exercise Price		7.76	7.76	7.46	$ 6.85
Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price		$ 0.00	$ 0.00	$ 7.76
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period		0	64,204	15,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Number		116,250	131,250	204,204	79,204
Share-based Compensation Arrangements by Share-based Payment Award, Options, Exercises in Period, Weighted Average Exercise Price		$ 0.00	$ 6.79	$ 6.79
Warrant [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross	15,000
Restricted Stock [Member]
Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized		$ 1,342,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Fair Market Value		$ 0	8.13	$ 7.77	$ 13.62
Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures and Expirations in Period				0
Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures and Expirations in Period, Weighted Average Exercise Price		0.00	10.08	$ 0.00
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Exercise Price		6.99	9.61	10.21	$ 13.62
Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price		2.69	$ 8.13	$ 7.77
Maximum [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Upper Range Limit		7.76
Minimum [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Upper Range Limit		$ 7.76
Employee Stock Option [Member]
Allocated Share-based Compensation Expense		$ 0	$ 226,000	$ 162,000
Restricted Stock [Member]
Allocated Share-based Compensation Expense		$ 753,000	633,000	359,000
Selling and Marketing Expense [Member] | Employee Stock Option [Member]
Allocated Share-based Compensation Expense			55,000	39,000
General and Administrative Expense [Member] | Employee Stock Option [Member]
Allocated Share-based Compensation Expense			143,000	111,000
Engineering and Technical Support [Member] | Employee Stock Option [Member]
Allocated Share-based Compensation Expense			16,000	3,000
Cost of Sales [Member] | Employee Stock Option [Member]
Allocated Share-based Compensation Expense			$ 12,000	$ 9,000