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SUPPLEMENTAL DATA SCHEDULE II (Details) - USD ($) | 12 Months Ended
--- | ---
Mar. 31, 2015 | Mar. 31, 2014 | Mar. 31, 2013
Allowance for Doubtful Accounts [Member] |  |  |
Valuation and Qualifying Accounts Disclosure [Line Items] |  |  |
Balance Beginning of Period | $ 172,465 | $ 180,306 | $ 168,554
Charged to Costs and Expenses | 43,243 | 0 | 0
Reduction to Allowance for Write off | (40,291) | (15,807) | (8,248)
Credited to Costs and Expenses | (1,286) | 7,966 | 20,000
Balance at End of Period | 174,131 | 172,465 | 180,306
Deferred Tax Valuation Allowance [Member] |  |  |
Valuation and Qualifying Accounts Disclosure [Line Items] |  |  |
Balance Beginning of Period | 799,419 | 1,619,459 | 3,865,695
Charged to Costs and Expenses | 0 | 0 | (626,777)
Reduction to Allowance for Write off | (91,034) | (820,040) | (1,619,459)
Credited to Costs and Expenses | 0 | 0 | 0
Balance at End of Period | 708,385 | 799,419 | 1,619,459
Inventory Reserve [Member] |  |  |
Valuation and Qualifying Accounts Disclosure [Line Items] |  |  |
Balance Beginning of Period | 638,000 | 503,000 | 663,000
Charged to Costs and Expenses | 250,000 | 160,000 | 104,175
Reduction to Allowance for Write off | (467,000) | (25,000) | (264,175)
Credited to Costs and Expenses | 0 | 0 | 0
Balance at End of Period | $ 421,000 | $ 638,000 | $ 503,000

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