Condensed Financial Statements of Parent Company - Condensed Statements of Cash Flow (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Cash Flows from Operating Activities
Net Income Loss	$ 2,640,457	$ 307,654
Adjustments to reconcile net income to net cash provided by (used in) operating activities
ESOP expense	265,937	0
Net cash provided by (used) in operating activities	3,947,675	(647,644)
Cash Flows from Investing Activities
Net cash used in investing activities	(33,176,024)	(8,853,711)
Cash Flow Noncash Investing And Financing Activities Disclosure [Abstract]
Proceeds from sale of common stock	48,983,500	0
Stock offering expenses	1,523,443	0
Common stock purchased by ESOP	(3,918,680)	0
Net cash provided by financing activities	29,242,781	27,185,872
Net Change in Cash and Cash Equivalents	14,432	17,684,517
Cash and Cash Equivalents, Beginning of Period	41,876,399	24,191,882
Cash and Cash Equivalents, End of Period	41,890,831	41,876,399
Parent Company
Cash Flows from Operating Activities
Net Income Loss	2,640
Adjustments to reconcile net income to net cash provided by (used in) operating activities
Undistributed Net Income	(2,626)
ESOP expense	266
Increase in other assets	(3,735)
Increase in other liabilities	28
Net cash provided by (used) in operating activities	(3,427)
Cash Flows from Investing Activities
Capital contribution to TC Federal Bank	20,260
Net cash used in investing activities	(20,260)
Cash Flow Noncash Investing And Financing Activities Disclosure [Abstract]
Proceeds from sale of common stock	(48,984)
Stock offering expenses	(1,523)
Common stock purchased by ESOP	3,919
Net cash provided by financing activities	43,542
Net Change in Cash and Cash Equivalents	(19,855)
Cash and Cash Equivalents, Beginning of Period	0
Cash and Cash Equivalents, End of Period	$ 19,855	$ 0