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RESERVES (Tables) | 12 Months Ended
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Mar. 31, 2016
Valuation and Qualifying Accounts [Abstract] |
Schedule Of Valuation And Qualifying Accounts [Table Text Block] | Data regarding asset reserves and allowances for Fiscal 2016, 2015, and 2014 are presented in the following table:
|  | Balance at |  | Charged to |  | Reduction to |  | Credited to |  | Balance at |
|  | Beginning of |  | Costs and |  | Allowance for |  | Costs and |  | End of |
Description |  | Period |  | Expenses |  | Write off |  | Expenses |  | Period |
Year ended March 31, 2016 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Reserves deducted from assets to which they apply: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Allowance for doubtful accounts |  | $ | 174,131 |  | $ | - |  | $ | (124,621) |  | $ | 1,669 |  | $ | 51,179 |
Deferred tax valuation allowance |  | $ | 708,385 |  | $ | - |  | $ | - |  | $ | (708,385) |  | $ | - |
Inventory reserve |  | $ | 421,000 |  | $ | 376,560 |  | $ | (37,560) |  | $ | - |  | $ | 760,000 |
Year ended March 31, 2015 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Reserves deducted from assets to which they apply: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Allowance for doubtful accounts |  | $ | 172,465 |  | $ | 43,243 |  | $ | (40,291) |  | $ | (1,286) |  | $ | 174,131 |
Deferred tax valuation allowance |  | $ | 799,419 |  | $ | - |  | $ | (91,034) |  | $ | - |  | $ | 708,385 |
Inventory reserve |  | $ | 638,000 |  | $ | 250,000 |  | $ | (467,000) |  | $ | - |  | $ | 421,000 |
Year ended March 31, 2013 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Reserves deducted from assets to which they apply: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Allowance for doubtful accounts |  | $ | 180,306 |  | $ | - |  | $ | (15,807) |  | $ | 7,966 |  | $ | 172,465 |
Deferred tax valuation allowance |  | $ | 1,619,459 |  | $ | - |  | $ | (820,040) |  | $ | - |  | $ | 799,419 |
Inventory reserve |  | $ | 503,000 |  | $ | 160,000 |  | $ | (25,000) |  | $ | - |  | $ | 638,000 |

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- Definition The entire disclosure for any allowance and reserve accounts (their beginning and ending balances, as well as a reconciliation by type of activity during the period). Alternatively, tabular disclosure of the required information may be within the footnotes to the financial statements or a supplemental schedule to the financial statements. + References No definition available. + Details
Name: | smdm_ScheduleOfValuationAndQualifyingAccountsTableTextBlock
Namespace Prefix: | smdm_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

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- References No definition available. + Details
Name: | us-gaap_ValuationAndQualifyingAccountsAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration