Summary of Significant Accounting Policies (Detail Textuals) (USD $)	12 Months Ended
Mar. 31, 2013	Mar. 31, 2012
Concentration Risk [Line Items]
Allowance for doubtful accounts (in dollars)	$ 5,000	$ 5,000
Short term investments - available for sale	15,490,000	10,347,000
Inventory reserve	79,000	66,000
Unrealized loss on short term investments	(46,000)	75,000
Unrealized recovery from accumulated other comprehensive income		$ 110,000
Settlement with tax authority, description	greater than 50 percent	greater than 50 percent
Depreciation method	straight-line method
Furniture, fixtures and equipment
Concentration Risk [Line Items]
Depreciation period	three to seven years
Computer software
Concentration Risk [Line Items]
Depreciation period	three to seven years
Business Concentrations
Concentration Risk [Line Items]
Number of suppliers	5	4
Percentage products purchased fom suppliers	50.00%	50.00%

Represents number of suppliers.

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Represents settlement with tax authority.

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No definition available.

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Represents unrealized recovery within accumulated other comprehensive income.

+ References

No definition available.

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- Definition

A valuation allowance for trade and other receivables due to an Entity within one year (or the normal operating cycle, whichever is longer) that are expected to be uncollectible.

+ References

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 50

-Paragraph 4

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-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 4

-Article 5

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

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-Section S99

-Paragraph 1

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- Definition

Amount of investment in debt and equity securities categorized neither as trading securities nor held-to-maturity securities and intended be sold or mature one year or operating cycle, if longer.

+ References

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

-Publisher AICPA

-Name Accounting Research Bulletin (ARB)

-Number 43

-Section A

-Paragraph 4, 5

-Chapter 3

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 115

-Paragraph 12

-Subparagraph b

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 115

-Paragraph 16

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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-Name Statement of Financial Accounting Standard (FAS)

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-Topic 320

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- Definition

For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

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-Topic 275

-SubTopic 10

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- Definition

Reflects the difference between (a) inventory at the lower of LIFO cost or market and (b) inventory at replacement cost or at the lower of some acceptable inventory accounting method (such as FIFO or average cost), or market. If material, reflects an excess of replacement or current cost over stated LIFO value parenthetically on the balance sheet or in a note to the financial statements.

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.6(c))

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-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 6

-Subparagraph c

-Article 5

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- Definition

Describes an entity's methodology for allocating the cost of a property, plant or equipment, less salvage value (if any), over the estimated useful life of the asset in a systematic and rational manner.

+ References

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-Name Accounting Standards Codification

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-Paragraph 1

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-Publisher AICPA

-Name Accounting Research Bulletin (ARB)

-Number 43

-Section C

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-Publisher AICPA

-Name Accounting Principles Board Opinion (APB)

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Describes the periods of time over which an entity anticipates to receive utility from its property, plant and equipment (that is, the periods of time over which an entity allocates the initial cost of its property, plant and equipment).

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 235

-SubTopic 10

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-Paragraph 3

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- Definition

The increases or decreases in the market value of unsold securities whose gains or losses were included in earnings, and which, were not separately or otherwise categorized as trading, available-for-sale, or held-to-maturity.

+ References

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 95

-Paragraph 28

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