Employee Benefit Plans - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Defined Contribution Plan Disclosure [Line Items]
Present value liability	$ 2,571,862	$ 4,040,436
Defined benefit plan, expense	(190,278)	(134,462)
Employee stock ownership plan (ESOP) compensation expense	265,937	0
401 (K) Plan [Member]
Defined Contribution Plan Disclosure [Line Items]
Bank contribution amount	210,000	201,000
Supplemental Executive Retirement Plans [Member]
Defined Contribution Plan Disclosure [Line Items]
Employee benefit plan retirement period			10 years
Retirement benefit vesting schedule period			10 years
Cash surrender value	11,167,000	10,883,000
Present value liability	641,000	491,000
Defined benefit plan, expense	$ 150,000	$ 288,000
Discount rate	2.17%	2.18%
Director Deferred Fee Practice [Member]
Defined Contribution Plan Disclosure [Line Items]
Defined benefit plan, expense	$ 47,000	$ 46,000
Non employee benefit plan retirement period			15 years
Retired director monthly benefit amount		$ 825	$ 825
Other non-employee directors normal monthly benefit payment period		10 years
Other non-employee directors benefit plan retirement period	10 years
Defined benefit plan, projected defined benefit obligation	$ 498,000	$ 610,000
Description of eligibility of non-employee directors retirement benefit	The Bank has maintained a discretionary practice of paying a retirement benefit to eligible non-employee directors who attain at least age 70 in the service of the Bank with at least 15 years of service to their credit. Under this practice, each eligible retired director received a monthly benefit in the amount of $825. In anticipation of the Reorganization (see Note 13), the Bank decided to formalize and revise this practice in 2020. The Bank has relinquished its discretion over the practice with respect to eligible retired directors and current non-employee directors who satisfied the eligibility criteria for the benefit as of December 31, 2019. The normal retirement benefit for this group will be a monthly benefit in the amount of $825 a month for the remaining life of the director. With respect to all other non-employee directors serving as of December 31, 2019, the amount of the normal monthly benefit will remain unchanged, but will be paid over a period of 10 years following retirement or, if less, the director’s remaining lifetime. The eligibility criteria for this group has been changed to the attainment of at least age 65 with at least 10 years of service. No future non-employee director will be eligible for a benefit under this formalized plan.
Description of tax-qualified defined benefit retirement plan	The Bank has recorded and will continue to record a liability for these payments as post-retirement defined benefit obligations.
Defined benefit plan, expected long-term rate of return on assets	2.17%	2.18%
Tax Qualified Frozen Defined Benefit Pension Plan [Member]
Defined Contribution Plan Disclosure [Line Items]
Discount rate	2.33%	3.09%
Defined benefit plan, expected long-term rate of return on assets	8.00%	8.00%
Defined benefit plan, expected contributions to plan	$ 0
Tax Qualified Frozen Defined Benefit Pension Plan [Member] | Minimum [Member]
Defined Contribution Plan Disclosure [Line Items]
Discount rate	5.35%
Tax Qualified Frozen Defined Benefit Pension Plan [Member] | Maximum [Member]
Defined Contribution Plan Disclosure [Line Items]
Discount rate		10.10%
Employee Stock Ownership Plan [Member]
Defined Contribution Plan Disclosure [Line Items]
Employee stock ownership plan (ESOP), Plan description	As part of the stock offering, the Company established the TC Federal Bank Employee Stock Ownership Plan ("ESOP") to provide eligible employees of the Company the opportunity to own Company stock. The ESOP is a tax-qualified retirement plan for the benefit of Company employees. Contributions are allocated to eligible participants on the basis of compensation, subject to federal limits. The Company uses the principal and interest method to determine the release of shares amounts.
Committed to be allocated	19,600
Employee stock ownership plan (ESOP), Debt structure, Indirect loan, Description	The ESOP funded its purchase of 391,868 shares through a loan from the Company equal to 100% of the aggregate purchase price of the common stock. The ESOP trustee will repay the loan principally through the Bank's contributions to the ESOP over the remaining loan term of 19 years.
Employee stock ownership plan (ESOP), Shares in ESOP	391,868
Principal balance on ESOP debt	$ 3,700,000
Employee stock ownership plan (ESOP) compensation expense	$ 335,000