XML 49 R33.htm IDEA: XBRL DOCUMENT
v3.20.2

Reserves (Tables) | 12 Months Ended
--- | ---
Mar. 31, 2020
SEC Schedule, 12-09, Valuation and Qualifying Accounts [Abstract] |
Schedule of Valuation and Qualifying Accounts | Asset reserves and allowances for years ended March 31, 2020 and 2019 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 |  | Year |  |  | Expenses |  |  | Write off |  |  | Expenses |  |  | Year |
Year ended March 31, 2020 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Reserves deducted from assets to which they apply: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Allowance for doubtful accounts |  | $ | 51,096 |  |  | $ | 303,843 |  |  | $ | (15,303 | ) |  | $ | (2,175 | ) |  | $ | 337,461 |
Inventory reserve |  | $ | 254,000 |  |  | $ | 398,730 |  |  | $ | (218,730 | ) |  | $ | - |  |  | $ | 434,000 |
Year ended March 31, 2019 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Reserves deducted from assets to which they apply: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Allowance for doubtful accounts |  | $ | 82,102 |  |  | $ | 411,862 |  |  | $ | (31,200 | ) |  | $ | (411,668 | ) |  | $ | 51,096 |
Inventory reserve |  | $ | 280,000 |  |  | $ | 100,000 |  |  | $ | (44,220 | ) |  | $ | (81,780 | ) |  | $ | 254,000 |

X
- Definition Schedule of valuation and qualifying accounts [Table Text Block]. + References No definition available. + Details
Name: | SMDM_ScheduleOfValuationAndQualifyingAccountsTableTextBlock
Namespace Prefix: | SMDM_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | srt_ValuationAndQualifyingAccountsAbstract
Namespace Prefix: | srt_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration