DESCRIPTION OF THE BUSINESS AND MERGER TRANSACTION - Reconciliation of Common Shares Related to Merger (Details) - shares	Jan. 04, 2021	Dec. 31, 2020	Dec. 31, 2021
Business Description And Reverse Recapitalization [Abstract]
Shares held by legacy BankMobile shareholders (in shares)		6,123,432
Shares held by legacy BankMobile shareholders (in shares)	6,076,946
Common stock, shares issued (in shares)	12,200,378	6,123,432	12,193,378
Common stock, shares outstanding (in shares)	12,200,378	6,123,432	12,193,378

Business Description And Reverse Recapitalization

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- Definition

Stock Converted, Reverse Recapitalization

+ References

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Stock Issued During Period, Shares, Reverse Recapitalization

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- Definition

Total number of common shares of an entity that have been sold or granted to shareholders (includes common shares that were issued, repurchased and remain in the treasury). These shares represent capital invested by the firm's shareholders and owners, and may be all or only a portion of the number of shares authorized. Shares issued include shares outstanding and shares held in the treasury.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(29))
-URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

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Number of shares of common stock outstanding. Common stock represent the ownership interest in a corporation.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=123467817&loc=d3e21463-112644

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(29))
-URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

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