Summary of Significant Accounting Policies - Modified Loan Request (Details)	Jun. 30, 2021 USD ($) loan
Financing Receivable, Recorded Investment [Line Items]
Number of loans resumed \| loan	88
Modifications resumed \| $	$ 22,881,963
Construction, Land, Development
Financing Receivable, Recorded Investment [Line Items]
Number of loans resumed \| loan	2
Modifications resumed \| $	$ 113,324
Residential \| 1-4 Family Owner Occupied
Financing Receivable, Recorded Investment [Line Items]
Number of loans resumed \| loan	50
Modifications resumed \| $	$ 6,928,668
Residential \| 1-4 Family Non-Owner Occupied
Financing Receivable, Recorded Investment [Line Items]
Number of loans resumed \| loan	16
Modifications resumed \| $	$ 2,255,510
Residential \| Multifamily
Financing Receivable, Recorded Investment [Line Items]
Number of loans resumed \| loan	13
Modifications resumed \| $	$ 10,716,179
Commercial \| Commercial Owner Occupied
Financing Receivable, Recorded Investment [Line Items]
Number of loans resumed \| loan	2
Modifications resumed \| $	$ 1,419,056
Commercial \| Commercial Non-Owner Occupied
Financing Receivable, Recorded Investment [Line Items]
Number of loans resumed \| loan	2
Modifications resumed \| $	$ 1,408,571
Consumer
Financing Receivable, Recorded Investment [Line Items]
Number of loans resumed \| loan	3
Modifications resumed \| $	$ 40,655

TEB Bancorp, Inc. 10-K/A