Remaining amortization period for any of the liability component of debt.

No definition available.

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Balance Type:	na
Period Type:	duration

- Definition

Debt to EBITA ratio is the measure of a entity ability to pay off its incurred debt. This ratio gives the investor the approximate amount of time that would be needed to pay off all debt, ignoring the factors of interest, taxes, depreciation and amortization.

+ References

No definition available.

+ Details

Name:	aim_DebtToEbitaRatio
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Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	instant

- Definition

Represent the adjustment of company's requirement to retain stockholders equity.

+ References

No definition available.

+ Details

Name:	aim_MinimumAmountOfStockholdersEquityToBeRetained
Namespace Prefix:	aim_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Net asset percentage increase of net income quarterly.

+ References

No definition available.

+ Details

Name:	aim_NetAssetPercentageIncreaseOfNetIncomeQuarterly
Namespace Prefix:	aim_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Is the measure of a entity ability to pay off its incurred payments on capitalized lease obligations.

+ References

No definition available.

+ Details

Name:	aim_PaymentsOnCapitalizedLeaseObligationsCovenantRatio
Namespace Prefix:	aim_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	instant

- Definition

The net of assets and liabilities.

+ References

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 09

-Paragraph 19

-Article 6

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 946

-SubTopic 225

-Section S99

-Paragraph 3

-Subparagraph (SX 210.6-09.6,7)

-URI http://asc.fasb.org/extlink&oid=6488393&loc=d3e606914-122999

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 946

-SubTopic 210

-Section S99

-Paragraph 2

-Subparagraph (SX 210.6-05.4)

-URI http://asc.fasb.org/extlink&oid=6488278&loc=d3e604008-122996

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 05

-Paragraph 4

-Article 6

+ Details

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

- Definition

The stated principal amount of the debt instrument at time of issuance, which may vary from the carrying amount because of unamortized premium or discount.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 835

-SubTopic 30

-Section 45

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28551-108399

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 835

-SubTopic 30

-Section 55

-Paragraph 8

-URI http://asc.fasb.org/extlink&oid=6584090&loc=d3e28878-108400

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

-Publisher AICPA

-Name Accounting Principles Board Opinion (APB)

-Number 21

-Paragraph 16, 20

-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.

+ Details

Name:	us-gaap_DebtInstrumentFaceAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Interest rate stated in the contractual debt agreement.

+ References

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Description of the interest rate as being fixed or variable, and, if variable, identification of the index or rate on which the interest rate is based and the number of points or percentage added to that index or rate to set the rate, and other pertinent information, such as frequency of rate resets.

+ References

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 22

-Article 5

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 210.5-02.22(a)(1))

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

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 129

-Paragraph 2, 4

-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.

+ Details

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Balance Type:	na
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- Definition

Date when the debt instrument is scheduled to be fully repaid, in CCYY-MM-DD format.

+ References

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 22

-Article 5

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 210.5-02.22(a)(2))

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

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 129

-Paragraph 2, 4

-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.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount borrowed under the credit facility as of the balance sheet date.

+ References

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 19, 22

-Article 5

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Increase for accrued, but unpaid interest on the credit facility for the period.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 235

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.4-08.(f))

-URI http://asc.fasb.org/extlink&oid=6881521&loc=d3e23780-122690

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 08

-Paragraph f

-Article 4

+ Details

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Balance Type:	credit
Period Type:	duration

- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 129

-Paragraph 2, 4

-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 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.19(b),22(b))

-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 19, 22

-Article 5

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding).

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.19(b),22(b))

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

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 19, 22

-Article 5

+ Details

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Long-term Debt and Revolving Credit Facility (Details Textual) (USD $)	1 Months Ended	12 Months Ended
	May 21, 2009	Jan. 31, 2013	Jan. 31, 2012	Apr. 30, 2010	May 14, 2009
Line of Credit Facility, Maximum Borrowing Capacity				$ 10,100,000
Line of Credit Facility, Remaining Borrowing Capacity		3,097,000
Debt Instrument, Interest Rate, Stated Percentage		4.00%			14.00%
Line of Credit Facility, Increase, Accrued Interest		258,000	371,000
Assets, Net		7,419,000
Debt To Ebita Ratio		3.0:1.0
Payments On Capitalized Lease Obligations Covenant Ratio		1.20:1.0
Debt Instrument, Maturity Date	Apr. 10, 2010
Net Asset Percentage Increase Of Net Income Quarterly		90.00%
Third Amendment [Member]
Minimum Amount Of Stockholders Equity To Be Retained		8,759,000
Equipment Term Note [Member]
Debt Instrument, Face Amount		1,900,000
Debt Instrument, Interest Rate Terms		One-month LIBOR plus 340 basis points
Debt Instrument, Interest Rate, Stated Percentage		4.00%
Debt Instrument Amortization Period		5 Years
Equipment Term Note [Member] \| Third Amendment [Member]
Debt Instrument, Face Amount		887,000
Debt Instrument, Maturity Date		May 01, 2015
Real Estate Mortgage Note [Member]
Debt Instrument, Face Amount		3,500,000		3,500,000
Debt Instrument, Interest Rate Terms		One-month LIBOR plus 340 basis points
Debt Instrument, Interest Rate, Stated Percentage		4.00%
Debt Instrument Amortization Period		15 Years
Real Estate Mortgage Note [Member] \| Third Amendment [Member]
Debt Instrument, Face Amount		2,877,000
Debt Instrument, Maturity Date		Jan. 31, 2018
Equipment Credit Line Note [Member]
Debt Instrument, Face Amount		1,900,000		1,900,000
Line of Credit Facility, Amount Outstanding		700,000		700,000
Debt Instrument, Interest Rate Terms		One-month LIBOR plus 325 basis points
Debt Instrument, Interest Rate, Stated Percentage		4.00%
Debt Instrument Amortization Period		3 Years
Debt Instrument, Maturity Date		May 01, 2014
Revolving Credit Line Note [Member]
Debt Instrument, Face Amount		4,000,000
Line of Credit Facility, Amount Outstanding				4,000,000
Debt Instrument, Interest Rate Terms		one-month LIBOR (which was 0.2087% at January 31, 2013) plus 300 basis points.
Revolving Credit Line Note [Member] \| Third Amendment [Member]
Debt Instrument, Face Amount		$ 4,000,000
Debt Instrument, Maturity Date		Jan. 31, 2016