Inventories (Details) (USD $)	Feb. 28, 2015	Feb. 28, 2014
Schedule of Inventories
Inventory, Raw Materials, Gross	$ 2,124,000us-gaap_InventoryRawMaterials	$ 1,878,000us-gaap_InventoryRawMaterials
Inventory, Work-In-Process, Gross	3,744,000us-gaap_InventoryWorkInProcess	3,103,000us-gaap_InventoryWorkInProcess
Inventory, Finished Goods, Gross	1,077,000us-gaap_InventoryFinishedGoods	1,782,000us-gaap_InventoryFinishedGoods
Inventory, Gross, Total	6,945,000us-gaap_InventoryGross	6,763,000us-gaap_InventoryGross
Inventory Raw Material Reserve	(404,000)sodi_InventoryRawMaterialReserve	(447,000)sodi_InventoryRawMaterialReserve
Inventory Work-In-Process Reserve	(1,624,000)sodi_InventoryWorkInProcessReserve	(1,292,000)sodi_InventoryWorkInProcessReserve
Inventory Finished Goods Reserve	(720,000)sodi_InventoryFinishedGoodsReserve	(708,000)sodi_InventoryFinishedGoodsReserve
Inventory Adjustments, Total	(2,748,000)us-gaap_InventoryAdjustments	(2,447,000)us-gaap_InventoryAdjustments
Inventory, Raw material, Net	1,720,000	1,431,000
Inventory, Work in Process, Net	2,120,000	1,811,000
Inventory, Finished Goods, Net	357,000	1,074,000
Inventories, Net	$ 4,197,000us-gaap_InventoryNet	$ 4,316,000us-gaap_InventoryNet

Inventory finished goods reserve.

No definition available.

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- Definition

Inventory raw material reserve.

+ References

No definition available.

+ Details

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Period Type:	instant

- Definition

Inventory work in process reserve.

+ References

No definition available.

+ Details

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Period Type:	instant

- Definition

Certain changes made in the current period to the value and amount of inventory reported.

+ References

+ Details

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- Definition

Amount before valuation and LIFO reserves of completed merchandise or goods expected to be sold within one year or operating cycle, if longer.

+ References

+ Details

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- Definition

Carrying amount, net of valuation reserves and adjustments, as of the balance sheet date of merchandise or goods held by the company that are readily available for sale.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 330

-SubTopic 10

-Section S99

-Paragraph 2

-Subparagraph (SAB TOPIC 5.BB)

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-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.6(a)(1))

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-Publisher SEC

-Name Staff Accounting Bulletin (SAB)

-Number Topic 5

-Section BB

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- Definition

Gross amount, as of the balance sheet date, of merchandise, goods, commodities, or supplies held for future sale or to be used in manufacturing, servicing or production process.

+ References

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- Definition

Amount after valuation and LIFO reserves of inventory expected to be sold, or consumed within one year or operating cycle, if longer.

+ References

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

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-Subparagraph (SX 210.5-02.6(a))

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-Paragraph 1

-Subparagraph (b)

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- Definition

Amount before valuation and LIFO reserves of raw materials expected to be sold, or consumed within one year or operating cycle, if longer.

+ References

+ Details

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- Definition

Carrying amount, net of valuation reserves and adjustments, as of the balance sheet date of unprocessed items to be consumed in the manufacturing or production process.

+ References

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-Publisher FASB

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-Subparagraph (SX 210.5-02.6(a)(4))

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- Definition

Amount before valuation and LIFO reserves of merchandise or goods in the production process expected to be completed within one year or operating cycle, if longer.

+ References

+ Details

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- Definition

Carrying amount, net of reserves and adjustments, as of the balance sheet date of merchandise or goods which are partially completed. This inventory is generally comprised of raw materials, labor and factory overhead costs, which require further materials, labor and overhead to be converted into finished goods, and which generally require the use of estimates to determine percentage complete and pricing.

+ References

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