Loans and Leases Receivable Disclosure [Line Items]

Schedule of changes in the allowance for loan losses


	Commercial		Commercial				One-to-Four		Multi-Family
	Real Estate		and Industrial		Construction		Residential		Real Estate		Consumer		Unallocated		Total
June 30, 2023
Allowance for credit losses
Balance at beginning of year	$	1,591,644	$	32,701	$	55,029	$	263,951	$	233,371	$	601	$	17,753	$	2,195,050
Charge-offs		(136,753)		—		—		—		—		—		—		(136,753)
Recoveries		98,084		—		—		—		—		2,209		—		100,293
Provisions		(356,496)		(14,990)		(48,727)		(57,180)		132,030		(2,157)		347,520		—
Balance at June 30, 2023	$	1,196,479	$	17,711	$	6,302	$	206,771	$	365,401	$	653	$	365,273	$	2,158,590

Individually evaluated for impairment	$	—	$	—	$	—	$	—	$	—	$	—	$	—	$	—
Collectively evaluated for impairment		1,196,479		17,711		6,302		206,771		365,401		653		365,273		2,158,590
Balance at end of period	$	1,196,479	$	17,711	$	6,302	$	206,771	$	365,401	$	653	$	365,273	$	2,158,590
Loans
Individually evaluated for impairment	$	—	$	—	$	—	$	117,103	$	—	$	—	$	—	$	117,103
Collectively evaluated for impairment		84,580,946		6,878,209		1,905,255		59,445,715		44,183,871		2,824,747		—		199,818,743
Balance at end of period	$	84,580,946	$	6,878,209	$	1,905,255	$	59,562,818	$	44,183,871	$	2,824,747	$	—	$	199,935,846

Summary of credit quality information by loan portfolio


																	Revolving
																	Loans
															Revolving		Converted to
			2024		2023		2022		2021		2020		Prior		Loans		Term Loans		Total

		(Dollars in thousands)

Commercial real estate
	Pass	$	4,785	$	5,096	$	25,584	$	23,385	$	8,326	$	6,823	$	317	$	—	$	74,316
	Special Mention/Watch		—		—		—		—		—		—		—		—		—
	Substandard		—		—		—		—		—		—		—		—		—
	Nonaccrual		—		—		—		—		—		—		—		—		—
Total commercial real estate		$	4,785	$	5,096	$	25,584	$	23,385	$	8,326	$	6,823	$	317	$	—	$	74,316

Commercial and industrial
	Pass	$	96	$	807	$	1,598	$	2,162	$	75	$	393	$	27	$	—	$	5,158
	Special Mention/Watch		—		—		—		—		—		—		—		—		—
	Substandard		—		—		—		—		—		—		—		—		—
	Nonaccrual		—		—		—		—		—		—		—		—		—
Total commercial and industrial		$	96	$	807	$	1,598	$	2,162	$	75	$	393	$	27	$	—	$	5,158

Construction
	Pass	$	—	$	1,313	$	—	$	—	$	—	$	—	$	—	$	—	$	1,313
	Special Mention/Watch		—		—		—		—		—		—		—		—		—
	Substandard		—		—		—		—		—		—		—		—		—
	Nonaccrual		—		—		—		—		—		—		—		—		—
Total construction		$	—	$	1,313	$	—	$	—	$	—	$	—	$	—	$	—	$	1,313

One-to-four-family residential
	Performing	$	3,345	$	11,209	$	11,459	$	13,756	$	6,035	$	12,004	$	—	$	—	$	57,808
	Non-performing		—		—		—		—		—		—		—		—		—
Total one-to-four-family		$	3,345	$	11,209	$	11,459	$	13,756	$	6,035	$	12,004	$	—	$	—	$	57,808

Multi-family real estate
	Performing	$	1,829	$	8,735	$	16,666	$	13,344	$	1,857	$	2,604	$	53	$	—	$	45,088
	Non-performing		—		—		—		—		—		—		—		—		—
Total multi-family real estate		$	1,829	$	8,735	$	16,666	$	13,344	$	1,857	$	2,604	$	53	$	—	$	45,088

Consumer
	Performing	$	162	$	87	$	138	$	5	$	53	$	—	$	1,164	$	—	$	1,609
	Non-performing		—		—		—		—		—		—		—		—		—
Total consumer		$	162	$	87	$	138	$	5	$	53	$	—	$	1,164	$	—	$	1,609


Total loans		$	10,217	$	27,247	$	55,445	$	52,652	$	16,346	$	21,824	$	1,561	$	—	$	185,292

Summary of individually impaired loans by class of loans


			Unpaid				Average		Interest
	Recorded		Principal		Related		Recorded		Income
	Investment		Balance (1)		Allowance		Investment		Recognized
June 30, 2023
With no related allowance recorded
One-to-four-family residential	$	117,103	$	117,103	$	—	$	123,307	$	6,967
	$	117,103	$	117,103	$	—	$	123,307	$	6,967

Unpaid

Average

Interest

Recorded

Principal

Related

Recorded

Income

Investment

Balance (1)

Allowance

Investment

Recognized

With an allowance recorded

One-to-four-family residential

$

—

$

—

$

—

$

—

$

—

$

—

$

—

$

—

$

—

$

—

(1)	Represents the borrower's loan obligation, gross of any previously charged-off amounts.

Loans and Leases Receivable Disclosure [Line Items]

Summary of credit quality information by loan portfolio


	Performing		Nonperforming		Total
June 30, 2023
One-to-four-family residential	$	59,562,818	$	—	$	59,562,818
Multi-family real estate		44,183,871		—		44,183,871
Consumer		2,824,747		—		2,824,747
	$	106,571,436	$	—	$	106,571,436