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PROPERTY AND EQUIPMENT (Details) (USD $)	12 Months Ended
	Apr. 30, 2014	Apr. 30, 2013
Property, Plant and Equipment, Gross	$ 7,832,312	$ 8,921,746
Less accumulated depreciation	6,051,792	6,395,108
Property, Plant and Equipment, Net	1,780,520	2,526,638
Furniture and Fixtures [Member]
Property, Plant and Equipment, Gross	94,260	138,037
Furniture and Fixtures [Member] | Maximum [Member]
Estimated useful life (years)	7 years
Furniture and Fixtures [Member] | Minimum [Member]
Estimated useful life (years)	5 years
Computer and software [Member]
Property, Plant and Equipment, Gross	299,055	546,832
Computer and software [Member] | Maximum [Member]
Estimated useful life (years)	3 years
Computer and software [Member] | Minimum [Member]
Estimated useful life (years)	2 years
Office Equipment [Member]
Property, Plant and Equipment, Gross	16,814	16,872
Office Equipment [Member] | Maximum [Member]
Estimated useful life (years)	7 years
Office Equipment [Member] | Minimum [Member]
Estimated useful life (years)	5 years
Vehicles [Member]
Property, Plant and Equipment, Gross	1,281,456	1,558,460
Vehicles [Member] | Maximum [Member]
Estimated useful life (years)	7 years
Vehicles [Member] | Minimum [Member]
Estimated useful life (years)	5 years
Machinery and Equipment [Member]
Property, Plant and Equipment, Gross	5,401,436	5,898,291
Estimated useful life (years)	5 years
Building [Member]
Property, Plant and Equipment, Gross	447,603	454,321
Estimated useful life (years)	39 years
Leasehold Improvements [Member]
Property, Plant and Equipment, Gross	$ 291,688	$ 308,933
Leasehold Improvements [Member] | Maximum [Member]
Estimated useful life (years)	3 years
Leasehold Improvements [Member] | Minimum [Member]
Estimated useful life (years)	2 years

X

- Definition

Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 360

-SubTopic 10

-Section 50

-Paragraph 1

-Subparagraph (c)

-URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.14)

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682



Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 14

-Article 5

+ Details

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Namespace Prefix:	us-gaap_
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X

- Definition

Amount before accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 360

-SubTopic 10

-Section 50

-Paragraph 1

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.13)

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

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Namespace Prefix:	us-gaap_
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X

- Definition

Amount after accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business to produce goods and services and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 360

-SubTopic 10

-Section 50

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.13)

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682



Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 13

-Subparagraph a

-Article 5



Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 8

-Article 7

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X

- Definition

Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

+ References

No definition available.

+ Details

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