Amortized debt issuance expense.

No definition available.

Name:	aimc_AmortizedDebtIssuanceExpense
Namespace Prefix:	aimc_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Borrowing from financial institution.

+ References

No definition available.

+ Details

Name:	aimc_BorrowingFromFinancialInstitution
Namespace Prefix:	aimc_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Conversion price percentage.

+ References

No definition available.

+ Details

Name:	aimc_ConversionPricePercentage
Namespace Prefix:	aimc_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Coupon interest rate.

+ References

No definition available.

+ Details

Name:	aimc_CouponInterestRate
Namespace Prefix:	aimc_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Debt instrument convertible carrying amount of the debt component.

+ References

No definition available.

+ Details

Name:	aimc_DebtInstrumentConvertibleCarryingAmountOfDebtComponent
Namespace Prefix:	aimc_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Debt instrument interest rate.

+ References

No definition available.

+ Details

Name:	aimc_DebtInstrumentInterestRate
Namespace Prefix:	aimc_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Debt instrument maturity date three.

+ References

No definition available.

+ Details

Name:	aimc_DebtInstrumentMaturityDateThree
Namespace Prefix:	aimc_
Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	duration

- Definition

Debt instrument maturity date two.

+ References

No definition available.

+ Details

Name:	aimc_DebtInstrumentMaturityDateTwo
Namespace Prefix:	aimc_
Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	duration

- Definition

Debt instrument percentage redeemable.

+ References

No definition available.

+ Details

Name:	aimc_DebtInstrumentPercentageRedeemable
Namespace Prefix:	aimc_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Debt instruments maturity dates one.

+ References

No definition available.

+ Details

Name:	aimc_DebtInstrumentsMaturityDatesOne
Namespace Prefix:	aimc_
Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	duration

- Definition

interest rate mortgage

+ References

No definition available.

+ Details

Name:	aimc_Interestratemortgage
Namespace Prefix:	aimc_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Line of Credit Facility, Maximum Additional Expansion Amount Under Agreement

+ References

No definition available.

+ Details

Name:	aimc_LineofCreditFacilityMaximumAdditionalExpansionAmountUnderAgreement
Namespace Prefix:	aimc_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Number of consecutive trading days in measurement period.

+ References

No definition available.

+ Details

Name:	aimc_NumberOfConsecutiveTradingDaysInMeasurementPeriod
Namespace Prefix:	aimc_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Percentage of measurement period in last reported sales price.

+ References

No definition available.

+ Details

Name:	aimc_PercentageOfMeasurementPeriodInLastReportedSalesPrice
Namespace Prefix:	aimc_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Percentage on sale price of common stock.

+ References

No definition available.

+ Details

Name:	aimc_PercentageOnSalePriceOfCommonStock
Namespace Prefix:	aimc_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Period of business days after measurement period.

+ References

No definition available.

+ Details

Name:	aimc_PeriodOfBusinessDaysAfterMeasurementPeriod
Namespace Prefix:	aimc_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Principal amount of notes.

+ References

No definition available.

+ Details

Name:	aimc_PrincipalAmountOfNotes
Namespace Prefix:	aimc_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Adjustment to additional paid in capital resulting from the recognition of convertible debt instruments as two separate components - a debt component and an equity component. This bifurcation may result in a basis difference associated with the liability component that represents a temporary difference for purposes of applying accounting for income taxes. The initial recognition of deferred taxes for the tax effect of that temporary difference is as an adjustment to additional paid in capital.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 20
-Section 25
-Paragraph 22
-URI http://asc.fasb.org/extlink&oid=51819886&loc=SL6014347-161799

+ Details

Name:	us-gaap_AdjustmentsToAdditionalPaidInCapitalEquityComponentOfConvertibleDebt
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

This element represents the carrying value of a short-term real estate loan to finance building costs. The funds are disbursed as needed or in accordance with a prearranged plan; generally, a portion of the funds is disbursed at inception and the remainder as construction progresses. The money is repaid on completion of the project, usually from the proceeds of a mortgage loan. The rate is normally higher than the prime rate, and there is usually an origination fee. The effective yield on these loans tends to be high, and the lender has a security interest in the real property. Note that there are separate concepts for the current and noncurrent portions of long-term construction loans.

+ 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(a)(1))
-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, 20
-Article 5

+ Details

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

- Definition

The number of shares issued in exchange for the original debt being converted in a noncash (or part noncash) transaction. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or payments in the period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 50
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4332-108586

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4304-108586

+ Details

Name:	us-gaap_DebtConversionConvertedInstrumentSharesIssued1
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

- Definition

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

+ References

No definition available.

+ Details

Name:	us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount of long-term debt before deduction of unamortized discount or premium. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt, with initial maturities beyond one year or the normal operating cycle, if longer.

+ 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 210.5-02.22)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 02
-Paragraph 20
-Article 5

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 03
-Paragraph 16
-Article 9

+ Details

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

- Definition

The carrying amount of the equity component of convertible debt which may be settled in cash upon conversion.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 20
-Section 50
-Paragraph 4
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=6928298&loc=SL6031897-161870

+ Details

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

- Definition

The price per share of the conversion feature embedded in the debt instrument.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 20
-Section 50
-Paragraph 5
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=6928298&loc=SL6031898-161870

+ Details

Name:	us-gaap_DebtInstrumentConvertibleConversionPrice1
Namespace Prefix:	us-gaap_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	instant

- Definition

Threshold period of specified consecutive trading days within which common stock price to conversion price of convertible debt instruments must exceed threshold percentage for a specified number of trading days to trigger conversion feature, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

+ Details

Name:	us-gaap_DebtInstrumentConvertibleThresholdConsecutiveTradingDays
Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Threshold number of specified trading days that common stock price to conversion price of convertible debt instruments must exceed threshold percentage within a specified consecutive trading period to trigger conversion feature.

+ References

No definition available.

+ Details

Name:	us-gaap_DebtInstrumentConvertibleThresholdTradingDays
Namespace Prefix:	us-gaap_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium.

+ 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 210.5-02.22(a)(1))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: 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

+ Details

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

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

- Definition

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

+ References

+ Details

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

- Definition

Description of the maturity date of the debt instrument including whether the debt matures serially and, if so, a brief description of the serial maturities.

+ References

+ Details

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

- Definition

Amount of the required periodic payments applied to interest.

+ References

+ Details

Name:	us-gaap_DebtInstrumentPeriodicPaymentInterest
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Amount of unused borrowing capacity under the long-term financing arrangement that is available to the entity as of the balance sheet date.

+ References

+ Details

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

- Definition

Amount of debt issuance costs (for example, but not limited to, legal, accounting, broker, and regulatory fees).

+ References

No definition available.

+ Details

Name:	us-gaap_DebtIssuanceCosts
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Interest rate used to find the present value of an amount to be paid or received in the future as an input to measure fair value. For example, but not limited to, weighted average cost of capital (WACC), cost of capital, cost of equity and cost of debt.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (bbb)
-URI http://asc.fasb.org/extlink&oid=36462937&loc=d3e19207-110258

+ Details

Name:	us-gaap_FairValueInputsDiscountRate
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

The total amount of the contingent obligation under letters of credit outstanding as of the reporting date.

+ References

No definition available.

+ Details

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

- Definition

The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03.16)
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Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03.16)
-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 02
-Paragraph 19, 20, 22
-Article 5

+ Details

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

- 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

+ Details

Name:	us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity
Namespace Prefix:	us-gaap_
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

+ Details

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

- Definition

Carrying amount of long-term debt, net of unamortized discount or premium, including current and noncurrent amounts. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03.16)
-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

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

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03.16)
-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 02
-Paragraph 20, 22
-Article 5

+ Details

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

- Definition

Amount of mortgage loan on real estate that was renewed or extended.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 948
-SubTopic 310
-Section S99
-Paragraph 1
-Subparagraph (SX 210.12-29.6)
-URI http://asc.fasb.org/extlink&oid=6589523&loc=d3e617274-123014

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 205
-SubTopic 10
-Section S99
-Paragraph 6
-Subparagraph (SX 210.5-04.(c) Schedule IV)
-URI http://asc.fasb.org/extlink&oid=27047687&loc=d3e5864-122674

+ Details

Name:	us-gaap_MortgageLoansOnRealEstateRenewedAndExtendedAmount1
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

The cash inflow during the period from additional borrowings in aggregate debt. Includes proceeds from short-term and long-term debt.

+ References

No definition available.

+ Details

Name:	us-gaap_ProceedsFromIssuanceOfDebt
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Write-off of amounts previously capitalized as debt issuance cost in an extinguishment of debt.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.8)
-URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688

+ Details

Name:	us-gaap_WriteOffOfDeferredDebtIssuanceCost
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Details

Name:	us-gaap_LongtermDebtTypeAxis=us-gaap_LineOfCreditMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_CreditFacilityAxis=aimc_TermLoanMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_CreditFacilityAxis=aimc_AdditionalTermLoanMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LongtermDebtTypeAxis=us-gaap_ConvertibleDebtMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtConversionByUniqueDescriptionAxis=aimc_InitialConversionRateMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_RangeAxis=us-gaap_MinimumMember
Namespace Prefix:
Data Type:	na
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Period Type:

- Details

Name:	us-gaap_LongtermDebtTypeAxis=aimc_EquipmentAndWorkingCapitalNotesMember
Namespace Prefix:
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Balance Type:
Period Type:

- Details

Name:	us-gaap_StatementGeographicalAxis=country_CN
Namespace Prefix:
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- Details

Name:	us-gaap_StatementGeographicalAxis=country_SK
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- Details

Name:	us-gaap_RangeAxis=us-gaap_MaximumMember
Namespace Prefix:
Data Type:	na
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- Details

Name:	us-gaap_LongtermDebtTypeAxis=us-gaap_MortgagesMember
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Balance Type:
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- Details

Name:	us-gaap_StatementGeographicalAxis=aimc_HeidelbergGermanyMember
Namespace Prefix:
Data Type:	na
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- Details

Name:	us-gaap_StatementGeographicalAxis=aimc_EsslingenGermanyMember
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- Details

Name:	us-gaap_StatementGeographicalAxis=aimc_AngersFranceMember
Namespace Prefix:
Data Type:	na
Balance Type:
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- Details

Name:	us-gaap_LongtermDebtTypeAxis=us-gaap_CapitalLeaseObligationsMember
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Balance Type:
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- Details

Name:	us-gaap_DebtInstrumentAxis=aimc_FormerRevolvingCreditFacilityMember
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- Details

Name:	us-gaap_CreditFacilityAxis=us-gaap_RevolvingCreditFacilityMember
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Name:	us-gaap_DebtInstrumentAxis=aimc_A2015CreditAgreementMember
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Balance Type:
Period Type:

- Details

Name:	us-gaap_VariableRateAxis=us-gaap_EurodollarMember
Namespace Prefix:
Data Type:	na
Balance Type:
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- Details

Name:	us-gaap_VariableRateAxis=aimc_AbrBasedLoansMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_CreditFacilityAxis=us-gaap_LetterOfCreditMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LongtermDebtTypeAxis=us-gaap_DomesticLineOfCreditMember
Namespace Prefix:
Data Type:	na
Balance Type:
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- Details

Name:	us-gaap_LongtermDebtTypeAxis=us-gaap_ForeignLineOfCreditMember
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Name:	us-gaap_DebtInstrumentAxis=aimc_TermLoansMember
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Debt - Additional Information (Detail) $ / shares in Units, ¥ in Millions				1 Months Ended	6 Months Ended		12 Months Ended
	Dec. 31, 2015 USD ($)	Oct. 22, 2015 USD ($)	Sep. 01, 2011 USD ($)	Mar. 31, 2011 USD ($) d $ / shares shares	Jun. 30, 2016 USD ($) d $ / shares	Jun. 30, 2016 EUR (€) d	Dec. 31, 2015 USD ($)	Jun. 30, 2016 CNY (¥)	Jun. 30, 2016 EUR (€)	Dec. 31, 2015 EUR (€)	Dec. 06, 2013 USD ($)	Dec. 06, 2013 EUR (€)
Debt Instrument [Line Items]
Borrowings under overdraft agreements	$ 0				$ 0		$ 0
Line of Credit [Member] \| Term Loan [Member]
Debt Instrument [Line Items]
Outstanding on revolving credit facility											$ 94,000,000
Line of Credit [Member] \| Additional Term Loan [Member]
Debt Instrument [Line Items]
Availability under credit facility agreement \| €												€ 50,000,000
Convertible Debt [Member]
Debt Instrument [Line Items]
Debt instrument, maturity date				Mar. 01, 2031
Coupon interest rate			2.75%		2.75%			2.75%	2.75%
Proceeds from the offering			$ 81,300,000
Adjustment of shares (in shares) \| shares				36.0985
Principal amount of notes				$ 1,000
Conversion price per share (in usd per share) \| $ / shares					$ 25.84
Percentage of sale price of common stock				130.00%	130.00%	130.00%
Number of trading days \| d					20	20
Number of consecutive trading days				30 days	30 days	30 days
Number of business day period				5 days
Number of consecutive trading days in measurement period				10 days
Percentage of measurement period				97.00%
Percentage of convertible notes redeemable				100.00%
Convertible notes redeemable period one				Mar. 01, 2018
Convertible notes redeemable period two				Mar. 01, 2021
Convertible notes redeemable period three				Mar. 01, 2026
Conversion price redemption exceed				130.00%
Principal amount of debt				$ 85,000,000.0	$ 85,000,000
Debt component in note payable				60,500,000
Equity component in note payable				$ 24,500,000
Discount rate for debt component				8.25%
Debt issuance cost				$ 3,700,000
Adjustments to additional paid-in capital of convertible debt				1,000,000
Debt issuance cost, amortized				$ 2,700,000
Effective interest rate of Senior Secured Notes					8.50%			8.50%	8.50%
Convertible Debt [Member] \| Initial Conversion Price [Member]
Debt Instrument [Line Items]
Conversion price per share (in usd per share) \| $ / shares				$ 27.70
Convertible Debt [Member] \| Minimum [Member]
Debt Instrument [Line Items]
Number of trading days \| d				20
Equipment And Working Capital Notes [Member]
Debt Instrument [Line Items]
Description about maturity date of debt instrument					The loan is due in installments from 2014 through 2016	The loan is due in installments from 2014 through 2016	The loan is due in installments from 2014 through 2016
Equipment And Working Capital Notes [Member] \| Changzhou, China
Debt Instrument [Line Items]
Available to borrow loan amount					$ 7,600,000			¥ 50.5
Line of credit outstanding loan amount					$ 300,000			¥ 2.0
Equipment And Working Capital Notes [Member] \| Zlate Moravce, Slovakia [Member]
Debt Instrument [Line Items]
Interest rate					1.95%	1.95%
Available to borrow loan amount					$ 3,100,000				€ 3,000,000.0
Equipment And Working Capital Notes [Member] \| Minimum [Member] \| Changzhou, China
Debt Instrument [Line Items]
Interest rate					5.40%	5.40%
Equipment And Working Capital Notes [Member] \| Maximum [Member] \| Changzhou, China
Debt Instrument [Line Items]
Interest rate					8.02%	8.02%
Mortgages [Member] \| Heidelberg Germany [Member]
Debt Instrument [Line Items]
Interest rate					1.79%	1.79%
New mortgage amount	1,700,000				$ 1,700,000		$ 1,700,000		1,500,000.0	€ 1,500,000
Mortgages [Member] \| Esslingen Germany [Member]
Debt Instrument [Line Items]
Construction loan	6,800,000				$ 6,700,000		6,800,000		6,000,000	6,000,000
Mortgage interest rate					2.50%	2.50%
Monthly installments					$ 100,000	€ 100,000
Mortgages [Member] \| Angers France [Member]
Debt Instrument [Line Items]
Interest rate					1.85%	1.85%
Construction loan	2,300,000				$ 2,200,000		2,300,000		€ 2,000,000	€ 2,000,000
Capital Leases [Member]
Debt Instrument [Line Items]
Principal amount of debt	$ 500,000				400,000		500,000
Prior Revolving Credit Facility [Member] \| Line of Credit [Member] \| Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Availability under credit facility agreement											$ 200,000,000
2015 Credit Agreement [Member] \| Line of Credit [Member] \| Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Availability under credit facility agreement		$ 350,000,000
Outstanding on revolving credit facility					118,800,000
Additional expansion amount		$ 150,000,000
Amount available under credit facility					223,300,000
2015 Credit Agreement [Member] \| Line of Credit [Member] \| Revolving Credit Facility [Member] \| Eurodollar Loan [Member]
Debt Instrument [Line Items]
Applicable margins for loans	1.50%
2015 Credit Agreement [Member] \| Line of Credit [Member] \| Revolving Credit Facility [Member] \| Minimum [Member] \| Eurodollar Loan [Member]
Debt Instrument [Line Items]
Applicable margins for loans		1.25%
2015 Credit Agreement [Member] \| Line of Credit [Member] \| Revolving Credit Facility [Member] \| Minimum [Member] \| ABR Based Loans [Member]
Debt Instrument [Line Items]
Applicable margins for loans		0.25%
2015 Credit Agreement [Member] \| Line of Credit [Member] \| Revolving Credit Facility [Member] \| Maximum [Member] \| Eurodollar Loan [Member]
Debt Instrument [Line Items]
Applicable margins for loans		2.00%
2015 Credit Agreement [Member] \| Line of Credit [Member] \| Revolving Credit Facility [Member] \| Maximum [Member] \| ABR Based Loans [Member]
Debt Instrument [Line Items]
Applicable margins for loans		1.00%
2015 Credit Agreement [Member] \| Line of Credit [Member] \| Letter of Credit [Member]
Debt Instrument [Line Items]
Letters of credit outstanding	$ 7,000,000				7,900,000		$ 7,000,000
2015 Credit Agreement [Member] \| Domestic Line of Credit [Member] \| Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Outstanding on revolving credit facility					$ 106,200,000
Interest rate					1.96%	1.96%
2015 Credit Agreement [Member] \| Foreign Line of Credit [Member] \| Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Outstanding on revolving credit facility					$ 12,600,000
Interest rate					1.50%	1.50%
Term Loans [Member] \| Line of Credit [Member] \| Term Loan [Member]
Debt Instrument [Line Items]
Write-off of deferred financing costs		$ 500,000