NATURE OF OPERATIONS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Narrative (Details)	Jun. 30, 2024 institution
Accounting Policies [Abstract]
Number of financial services organizations, leading marketplace and financial technology brands (more than)	7,900

Number of financial institutions that signed agreement to deploy mobile deposit.

No definition available.

Name:	mitk_NumberOfFinancialInstitutionsThatSignedAgreementToDeployMobileDeposit
Namespace Prefix:	mitk_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant