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16. Stock Option Plans (Details) (USD $)
12 Months Ended
Mar. 31, 2014
Mar. 31, 2013
16. Stock Option Plans (Details) [Line Items]    
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term 5 years 5 years
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value (in Dollars per share) $ 1.76 $ 1.40
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant (in Shares) 237,278 218,978
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Intrinsic Value $ 3,760 $ 38,940
Proceeds from Stock Options Exercised 33,020 138,090
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized 39,255 108,807
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition 1 year  
Share-based Compensation 84,742 81,517
Adjustments to Additional Paid in Capital, Income Tax Benefit from Share-based Compensation $ 3,468 $ 7,190
2003 Stock Option Plan [Member]
   
16. Stock Option Plans (Details) [Line Items]    
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized (in Shares) 250,000  
Share-based Compensation Arrangement by Share-based Payment Award, Terms of Award term of ten years from the date of adoption  
Share-based Compensation Arrangement by Share-based Payment Award, Exercise Period 5 years  
Share-based Compensation Arrangement by Share-based Payment Award, Exercise Price Description exercise price which is not less than the fair market value of the common stock at the date of grant, except as to a stockholder owning 10% or more of the outstanding common stock of the Company, as to whom the exercise price must not be less than 110% of the fair market value of the common stock at the date of grant  
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights 20% at or after each of the first, second, and third anniversary of the grant and 40% after the fourth year anniversary