XML 45 R33.htm IDEA: XBRL DOCUMENT v3.7.0.1

PURCHASED INTANGIBLE ASSETS - Indefinite Lived Intangible Assets - Trade Name (Details) - USD ($) $ in Thousands	Jul. 31, 2017	Jan. 31, 2017
SMC
Indefinite-Lived Intangible Assets
Indefinite-lived Intangible Assets	$ 181	$ 181

X

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

Name:	us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Amount of assets, excluding financial assets and goodwill, lacking physical substance and having a projected indefinite period of benefit.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 50
-Paragraph 2
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275

+ Details

Name:	us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Details

Name:	dei_LegalEntityAxis=agx_SouthernMarylandCableMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: