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Disposition of Discontinued Operations (Details Textual) (USD $)	1 Months Ended	6 Months Ended
	Mar. 31, 2011	Jul. 31, 2011
Disposition of Discontinued Operations (Additional Textual) [Abstract]
Net revenues of the discontinued operations		$ 1,460,000
VLI Discontinued Unit [Member]
Disposition of Discontinued Operations (Textual) [Abstract]
Cash purchase price of assets	3,100,000
Cash purchase price of assets, received amount	800,000
Escrow Deposit	2,300,000
Cash proceeds from the escrow account		$ 1,678,000

X

- Definition

The maximum amount of cash proceeds to be received from the sale of the assets of the disposal group.

+ References

No definition available.

+ Details

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Namespace Prefix:	agx_
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- Details

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- Details

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Balance Type:	na
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X

- Definition

The amount of cash proceeds from the sale of assets placed into escrow pending the subsequent collection by the buyer of accounts receivable and the subsequent use of inventory by the buyer.

+ References

No definition available.

+ Details

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Namespace Prefix:	agx_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Proceeds from escrow deposit.

+ References

No definition available.

+ Details

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Namespace Prefix:	agx_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
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X

- Definition

Amount of sales or other form of revenues attributable to the disposal group, including a component of the entity (discontinued operation), during the reporting period.

+ References

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 144

-Paragraph 47

-Subparagraph c

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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.



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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 205

-SubTopic 20

-Section 50

-Paragraph 1

-Subparagraph (c)

-URI http://asc.fasb.org/extlink&oid=6360339&loc=d3e1361-107760

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Namespace Prefix:	us-gaap_
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Balance Type:	credit
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X

- Definition

The cash inflow associated with the deconsolidation of a previously consolidated subsidiary or the sale of investment in consolidated subsidiaries (generally greater than 50 percent).

+ References

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 95

-Paragraph 16

-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.



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

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Investing Activities

-URI http://asc.fasb.org/extlink&oid=6516133



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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 12

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=6943989&loc=d3e3179-108585



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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 95

-Paragraph 15

-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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