XML 16 R29.htm IDEA: XBRL DOCUMENT v2.4.1.9

Commitments and Contingencies - Additional Information (Detail) (USD $)	3 Months Ended
	Dec. 31, 2014
Loss Contingencies [Line Items]
Annual base rent	$ 471,000mitk_AnnualBaseRent
Increased percentage of Company's annual base rent	3.00%mitk_PercentageEffectOfLeaseAmendmentIncreaseOrDecreaseInRent
Tenant improvement allowances	675,690mitk_TenantImprovementAllowances
Unamortized lease incentives	472,071mitk_UnamortizedLeaseIncentives
Building [Member]
Loss Contingencies [Line Items]
Amended office space subject to the lease	22,523us-gaap_AreaOfLand / us-gaap_MajorPropertyClassAxis = us-gaap_BuildingMember
Other current liabilities [Member]
Loss Contingencies [Line Items]
Unamortized lease incentives	104,905mitk_UnamortizedLeaseIncentives / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherCurrentLiabilitiesMember
Other non-current liabilities [Member]
Loss Contingencies [Line Items]
Unamortized lease incentives	367,166mitk_UnamortizedLeaseIncentives / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherNoncurrentLiabilitiesMember
Standby letter of credit [Member]
Loss Contingencies [Line Items]
Standby letter of credit to the landlord	$ 210,000us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity / us-gaap_CreditFacilityAxis = us-gaap_StandbyLettersOfCreditMember

X

- Definition

Amount of annual base rent of leased assets, including but not limited to, offices and other facilities.

+ References

No definition available.

+ Details

Name:	mitk_AnnualBaseRent
Namespace Prefix:	mitk_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Percentage effect of lease amendment increase or decrease in rent.

+ References

No definition available.

+ Details

Name:	mitk_PercentageEffectOfLeaseAmendmentIncreaseOrDecreaseInRent
Namespace Prefix:	mitk_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Tenant Improvement Allowances

+ References

No definition available.

+ Details

Name:	mitk_TenantImprovementAllowances
Namespace Prefix:	mitk_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Unamortized Lease Incentives

+ References

No definition available.

+ Details

Name:	mitk_UnamortizedLeaseIncentives
Namespace Prefix:	mitk_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Area of land held.

+ References

No definition available.

+ Details

Name:	us-gaap_AreaOfLand
Namespace Prefix:	us-gaap_
Data Type:	num:areaItemType
Balance Type:	na
Period Type:	instant

X

- 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 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

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

X

- Details

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

X

- Details

Name:	us-gaap_BalanceSheetLocationAxis=us-gaap_OtherCurrentLiabilitiesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_BalanceSheetLocationAxis=us-gaap_OtherNoncurrentLiabilitiesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

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

X

- Details

Name:	us-gaap_MajorPropertyClassAxis=us-gaap_BuildingMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: