Aggregate regular quarterly dividends declared during the period for each share of common stock outstanding.

No definition available.

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- Definition

Aggregate special dividends paid during the period for each share of common stock outstanding.

+ References

No definition available.

+ Details

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- Definition

Aggregate special dividends declared during the period for each share of common stock outstanding.

+ References

No definition available.

+ Details

Name:	agx_CommonStockSpecialDividendsPerShareDeclared
Namespace Prefix:	agx_
Data Type:	num:perShareItemType
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- Definition

Aggregate dividends paid during the period for each share of common stock outstanding.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.3-04)
-URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770

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- Definition

Aggregate dividends declared during the period for each share of common stock outstanding.

+ References

+ Details

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- References

No definition available.

+ Details

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CASH DIVIDENDS (Details) - $ / shares										3 Months Ended		9 Months Ended		12 Months Ended
CASH DIVIDENDS (Details) - $ / shares	Oct. 31, 2020	Oct. 30, 2020	Sep. 10, 2020	Jul. 31, 2020	Jun. 23, 2020	Apr. 30, 2020	Apr. 09, 2020	Jul. 31, 2019	Apr. 30, 2019	Oct. 31, 2020	Oct. 31, 2019	Oct. 31, 2020	Oct. 31, 2019	Jan. 31, 2020
CASH DIVIDENDS
Regular cash dividend declared per common stock			$ 0.25		$ 0.25		$ 0.25			$ 0.25	$ 0.25	$ 1.75	$ 0.75
Regular cash dividend paid per common stock	$ 0.25	$ 0.25		$ 0.25		$ 0.25		$ 0.25	$ 0.25
Regular quarterly cash dividend declared per common stock														$ 0.25
Special Cash dividend declared per common stock					$ 1.00
Special cash dividend paid per common stock				$ 1.00