XML 27 R37.htm IDEA: XBRL DOCUMENT
v3.3.1.900

PURCHASE OF ATLANTIC PROJECTS COMPANY LIMITED - Proforma information (Details 4) - Atlantic Projects Company Limited [Member] - USD ($) | 3 Months Ended | 9 Months Ended
--- | --- | ---
Oct. 31, 2015 | Oct. 31, 2015 | Oct. 31, 2014
Business Acquisition, Pro Forma Information [Abstract] |  |  |
Adjustment to net income for amortization of purchased intangibles |  | $ 43,000 | $ 171,000
acquisition related costs |  | (457,000) |
Revenue since acquisition | $ 6,880,000 | 10,295,000.00 |
Income before income taxes since acquisition | 275,000 | 125,000 |
Revenues from overseas customers since acquisition | $ 5,270,000 | $ 8,231,000 |

X
- Definition This element represents the amount of earnings or loss before taxes of the acquiree since the acquisition date included in the consolidated income statement for the reporting period. + References No definition available. + Details
Name: | agx_BusinessCombinationProFormaInformationEarningsOrLossBeforeTaxesOfAcquireeSinceAcquisitionDateActual
Namespace Prefix: | agx_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition This element represents the amount of revenue from overseas customers of the acquiree since the acquisition date included in the consolidated income statement for the reporting period. + References No definition available. + Details
Name: | agx_BusinessCombinationProFormaInformationRevenueFromOverseasCustomersOfAcquireeSinceAcquisitionDateActual
Namespace Prefix: | agx_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The element represents the increase (decrease) in net income related to adjustment for amortization of purchased intangibles. + References No definition available. + Details
Name: | agx_BusinessCombinationProFormaNetIncomeAdjustmentForAmortizationOfPurchasedIntangibles
Namespace Prefix: | agx_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_BusinessAcquisitionProFormaInformationAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition This element represents acquisition-related costs incurred to effect a business combination which costs have been expensed during the period. Such costs include finder's fees; advisory, legal, accounting, valuation, and other professional or consulting fees; general administrative costs, including the costs of maintaining an internal acquisitions department; and may include costs of registering and issuing debt and equity securities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 25 -Paragraph 23 -URI http://asc.fasb.org/extlink&oid=34752592&loc=d3e1043-128460 + Details
Name: | us-gaap_BusinessCombinationAcquisitionRelatedCosts
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition This element represents the amount of revenue of the acquiree since the acquisition date included in the consolidated income statement for the reporting period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(1) -URI http://asc.fasb.org/extlink&oid=56956515&loc=d3e1392-128463 + Details
Name: | us-gaap_BusinessCombinationProFormaInformationRevenueOfAcquireeSinceAcquisitionDateActual
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Details
Name: | us-gaap_BusinessAcquisitionAxis=agx_AtlanticProjectsCompanyLimitedMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |