Conversion of accounts receivable to loan .

No definition available.

Name:	mntx_ConversionOfAccountsReceivableToLoan
Namespace Prefix:	mntx_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Debt repayment beginning year.

+ References

No definition available.

+ Details

Name:	mntx_DebtRepaymentBeginningYear
Namespace Prefix:	mntx_
Data Type:	xbrli:gYearItemType
Balance Type:	na
Period Type:	duration

- Definition

Debt repayment ending year.

+ References

No definition available.

+ Details

Name:	mntx_DebtRepaymentEndingYear
Namespace Prefix:	mntx_
Data Type:	xbrli:gYearItemType
Balance Type:	na
Period Type:	duration

- Definition

Debt repayment term.

+ References

No definition available.

+ Details

Name:	mntx_DebtRepaymentTerm
Namespace Prefix:	mntx_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Equity method investment, common stock, shares

+ References

No definition available.

+ Details

Name:	mntx_EquityMethodInvestmentCommonStockShares
Namespace Prefix:	mntx_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

- Definition

Line of credit facility amendment date.

+ References

No definition available.

+ Details

Name:	mntx_LineOfCreditFacilityAmendmentDate
Namespace Prefix:	mntx_
Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	duration

- Definition

Company's sale of investee stock under Initial Public Offering.

+ References

No definition available.

+ Details

Name:	mntx_NumberOfSharesSoldInTransaction
Namespace Prefix:	mntx_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

- Definition

Sale of stock price per share one.

+ References

No definition available.

+ Details

Name:	mntx_SaleOfStockPricePerShare1
Namespace Prefix:	mntx_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	instant

- Definition

Subordinated shareholder loan.

+ References

No definition available.

+ Details

Name:	mntx_SubordinatedShareholderLoan
Namespace Prefix:	mntx_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Face (par) amount of debt instrument at time of issuance.

+ References

Reference 1: 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=64930739&loc=d3e28878-108400

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=64930785&loc=d3e28551-108399

+ Details

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

- Definition

Percentage of domestic federal statutory tax rate applicable to pretax income (loss).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 12
-URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32687-109319

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SAB TOPIC 6.I)
-URI http://asc.fasb.org/extlink&oid=34349781&loc=d3e330036-122817

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 13
-URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32698-109319

+ Details

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

- Definition

The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 323
-SubTopic 10
-Section 50
-Paragraph 3
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=66011266&loc=d3e33918-111571

+ Details

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

- Definition

Tax year being audited in the income tax examination, in CCYY format.

+ References

No definition available.

+ Details

Name:	us-gaap_IncomeTaxExaminationYearUnderExamination
Namespace Prefix:	us-gaap_
Data Type:	xbrli:gYearItemType
Balance Type:	na
Period Type:	duration

- Definition

Date the credit facility terminates, in CCYY-MM-DD format.

+ 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

+ Details

Name:	us-gaap_LineOfCreditFacilityExpirationDate1
Namespace Prefix:	us-gaap_
Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	duration

- Definition

Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event.

+ References

No definition available.

+ Details

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

- Definition

Amount of decrease in unrecognized tax benefits resulting from settlements with taxing authorities.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 15A
-Subparagraph (a)(3)
-URI http://asc.fasb.org/extlink&oid=84230637&loc=SL6600010-109319

+ Details

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

- Definition

The total amount of unrecognized tax benefits that, if recognized, would affect the effective tax rate.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 15A
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=84230637&loc=SL6600010-109319

+ Details

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

- Details

Name:	us-gaap_LineOfCreditFacilityAxis=mntx_CIBCMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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

- Details

Name:	us-gaap_DebtInstrumentAxis=mntx_FirstAmendmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=mntx_SecondAmendmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=mntx_ThirdAmendmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=mntx_FourthAmendmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=mntx_FifthAmendmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=mntx_SixthAmendmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis=mntx_ASVAfterTransactionMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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

- Details

Name:	us-gaap_IncomeTaxAuthorityAxis=mntx_ItalianTaxAuthorityMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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

- Details

Name:	us-gaap_SubsequentEventTypeAxis=us-gaap_SubsequentEventMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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

- Details

Name:	us-gaap_SubsidiarySaleOfStockAxis=us-gaap_PrivatePlacementMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_StatementScenarioAxis=us-gaap_ScenarioForecastMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Subsequent Events - Additional Information (Detail) $ / shares in Units, $ in Thousands, € in Millions				9 Months Ended	12 Months Ended
	Mar. 06, 2018 EUR (€)	Dec. 31, 2017 USD ($)	Jul. 20, 2016	Sep. 30, 2017 USD ($) shares	Dec. 31, 2018	Feb. 28, 2018 $ / shares shares	Dec. 31, 2016 USD ($)
Subsequent Event [Line Items]
Annual statutory tax rates				35.00%
Total unrecognized tax benefits which if recognized would affect the effective tax rate \| $				$ 741			$ 741
CIBC Bank USA [Member] \| Revolving Credit Facility [Member]
Subsequent Event [Line Items]
Credit facility termination date			Jul. 20, 2019
First Amendment [Member] \| CIBC Bank USA [Member] \| Revolving Credit Facility [Member]
Subsequent Event [Line Items]
Loan agreement, amendment date			Aug. 02, 2016
Second Amendment [Member] \| CIBC Bank USA [Member] \| Revolving Credit Facility [Member]
Subsequent Event [Line Items]
Loan agreement, amendment date			Sep. 30, 2016
Third Amendment [Member] \| CIBC Bank USA [Member] \| Revolving Credit Facility [Member]
Subsequent Event [Line Items]
Loan agreement, amendment date			Nov. 08, 2016
Fourth Amendment [Member] \| CIBC Bank USA [Member] \| Revolving Credit Facility [Member]
Subsequent Event [Line Items]
Loan agreement, amendment date			Feb. 10, 2017
Fifth Amendment [Member] \| CIBC Bank USA [Member] \| Revolving Credit Facility [Member]
Subsequent Event [Line Items]
Loan agreement, amendment date			Apr. 26, 2017
Sixth Amendment [Member] \| CIBC Bank USA [Member] \| Revolving Credit Facility [Member]
Subsequent Event [Line Items]
Loan agreement, amendment date			Mar. 09, 2018
ASV after transaction [Member]
Subsequent Event [Line Items]
Equity method investment, number of common stock outstanding owned by the Company \| shares				2,080,000
Equity method investment ownership percentage				21.22%
Minimum [Member] \| Italian Income Tax [Member]
Subsequent Event [Line Items]
Income tax years under examination				2009
Maximum [Member] \| Italian Income Tax [Member]
Subsequent Event [Line Items]
Income tax years under examination				2013
Subsequent Event [Member]
Subsequent Event [Line Items]
Settlement with taxing authorities expected to reduce unrecognized tax benefits \| $		$ 456
Number of shares sold \| shares						1,000,000
Sale of stock price per share \| $ / shares						$ 7.00
Equity method investment, number of common stock outstanding owned by the Company \| shares						1,080,000
Equity method investment ownership percentage						11.00%
Conversion of Accounts Receivable to Loan	€ 3.1
Subordinated shareholder loan	1.8
Subsequent Event [Member] \| PM Group [Member]
Subsequent Event [Line Items]
Conversion of Accounts Receivable to Loan	3.1
Subordinated shareholder loan	€ 1.8
Debt repayment term	9 years
Debt repayment beginning year	2018
Debt repayment ending year	2026
Debt instrument, face amount \| $		$ 1,500,000
Subsequent Event [Member] \| ASV after transaction [Member]
Subsequent Event [Line Items]
Equity method investment, number of common stock outstanding owned by the Company \| shares						1,080,000
Equity method investment ownership percentage						11.00%
Subsequent Event [Member] \| ASV after transaction [Member] \| Private Negotiated Transaction with Institutional Purchasers [Member]
Subsequent Event [Line Items]
Number of shares sold \| shares						1,000,000
Sale of stock price per share \| $ / shares						$ 7.00
Subsequent Event [Member] \| Maximum [Member]
Subsequent Event [Line Items]
Subordinated shareholder loan	€ 2.4
Subsequent Event [Member] \| Maximum [Member] \| PM Group [Member]
Subsequent Event [Line Items]
Subordinated shareholder loan	€ 2.4
Scenario Forecast [Member]
Subsequent Event [Line Items]
Annual statutory tax rates					21.00%