XML 46 R36.htm IDEA: XBRL DOCUMENT v3.25.3

Note 4 - Loans - Loans by Credit Quality Indicators (Details) - USD ($)	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024	Dec. 31, 2024
Originated current year	$ 16,880,560		$ 16,880,560		$ 44,058,521
Originated prior year	44,742,840		44,742,840		32,442,459
Originated two years prior	35,149,757		35,149,757		109,789,683
Originated three years prior	109,663,475		109,663,475		33,689,261
Originated four years prior	31,517,031		31,517,031		68,992,186
Originated years prior	210,169,367		210,169,367		160,902,523
Revolving	223,648,905		223,648,905		264,462,552
Total loans	671,771,935		671,771,935		714,337,185
Gross charge-offs by vintage	(0)	$ (0)	(0)	$ (0)
Gross charge-offs by vintage	(0)	(0)	(0)	(0)
Commercial and Industrial [Member]
Originated current year	23,978		23,978		2,380,140
Originated prior year	1,966,064		1,966,064		196,286
Originated two years prior	161,069		161,069		0
Originated three years prior	0		0		0
Originated four years prior	0		0		311,422
Originated years prior	166,104		166,104		0
Revolving	1,386,261		1,386,261		3,275,899
Total loans	3,703,476		3,703,476		6,163,747
Originated current year, writeoffs			0		0
Originated prior year, writeoffs			0		0
Originated two years prior, writeoffs			0		0
Originated three years prior, writeoffs			0		0
Originated four years prior, writeoffs			0		0
Originated years prior, writeoffs			0		0
Revolving, writeoffs			0		0
Gross charge-offs by vintage	(0)	(0)	(0)	(0)	0
Gross charge-offs by vintage	(0)	(0)	(0)	(0)	0
Commercial and Industrial [Member] | Pass [Member]
Originated current year	23,978		23,978		2,380,140
Originated prior year	1,966,064		1,966,064		196,286
Originated two years prior	161,069		161,069		0
Originated three years prior	0		0		0
Originated four years prior	0		0		311,422
Originated years prior	166,104		166,104		0
Revolving	1,386,261		1,386,261		3,275,899
Total loans	3,703,476		3,703,476		6,163,747
Commercial and Industrial [Member] | Special Mention [Member]
Originated current year	0		0		0
Originated prior year	0		0		0
Originated two years prior	0		0		0
Originated three years prior	0		0		0
Originated four years prior	0		0		0
Originated years prior	0		0		0
Revolving	0		0		0
Total loans	0		0		0
Commercial and Industrial [Member] | Substandard [Member]
Originated current year	0		0		0
Originated prior year	0		0		0
Originated two years prior	0		0		0
Originated three years prior	0		0		0
Originated four years prior	0		0		0
Originated years prior	0		0		0
Revolving	0		0		0
Total loans	0		0		0
Commercial and Industrial [Member] | Doubtful [Member]
Originated current year	0		0		0
Originated prior year	0		0		0
Originated two years prior	0		0		0
Originated three years prior	0		0		0
Originated four years prior	0		0		0
Originated years prior	0		0		0
Revolving	0		0		0
Total loans	0		0		0
Consumer Portfolio Segment [Member]
Originated current year	0		0		0
Originated prior year	0		0		0
Originated two years prior	0		0		0
Originated three years prior	0		0		0
Originated four years prior	0		0		0
Originated years prior	0		0		0
Revolving	64,336		64,336		80,955
Total loans	64,336		64,336		80,955
Originated current year, writeoffs			0		0
Originated prior year, writeoffs			0		0
Originated two years prior, writeoffs			0		0
Originated three years prior, writeoffs			0		0
Originated four years prior, writeoffs			0		0
Originated years prior, writeoffs			0		0
Revolving, writeoffs			0		0
Gross charge-offs by vintage	(0)	(0)	(0)	(0)	0
Gross charge-offs by vintage	(0)	(0)	(0)	(0)	0
Consumer Portfolio Segment [Member] | Pass [Member]
Originated current year	0		0		0
Originated prior year	0		0		0
Originated two years prior	0		0		0
Originated three years prior	0		0		0
Originated four years prior	0		0		0
Originated years prior	0		0		0
Revolving	64,336		64,336		80,955
Total loans	64,336		64,336		80,955
Consumer Portfolio Segment [Member] | Special Mention [Member]
Originated current year	0		0		0
Originated prior year	0		0		0
Originated two years prior	0		0		0
Originated three years prior	0		0		0
Originated four years prior	0		0		0
Originated years prior	0		0		0
Revolving	0		0		0
Total loans	0		0		0
Consumer Portfolio Segment [Member] | Substandard [Member]
Originated current year	0		0		0
Originated prior year	0		0		0
Originated two years prior	0		0		0
Originated three years prior	0		0		0
Originated four years prior	0		0		0
Originated years prior	0		0		0
Revolving	0		0		0
Total loans	0		0		0
Consumer Portfolio Segment [Member] | Doubtful [Member]
Originated current year	0		0		0
Originated prior year	0		0		0
Originated two years prior	0		0		0
Originated three years prior	0		0		0
Originated four years prior	0		0		0
Originated years prior	0		0		0
Revolving	0		0		0
Total loans	0		0		0
Real Estate Loan [Member] | Residential Portfolio Segment [Member]
Originated current year	6,522,488		6,522,488		26,742,846
Originated prior year	26,799,710		26,799,710		20,620,971
Originated two years prior	19,609,339		19,609,339		102,163,479
Originated three years prior	99,318,676		99,318,676		31,658,834
Originated four years prior	29,797,378		29,797,378		26,147,651
Originated years prior	128,608,875		128,608,875		119,091,517
Revolving	138,939,828		138,939,828		146,322,244
Total loans	449,596,294		449,596,294		472,747,542
Originated current year, writeoffs			0		0
Originated prior year, writeoffs			0		0
Originated two years prior, writeoffs			0		0
Originated three years prior, writeoffs			0		0
Originated four years prior, writeoffs			0		0
Originated years prior, writeoffs			0		0
Revolving, writeoffs			0		0
Gross charge-offs by vintage	(0)	(0)	(0)	(0)	0
Gross charge-offs by vintage	(0)	(0)	(0)	(0)	0
Real Estate Loan [Member] | Residential Portfolio Segment [Member] | Pass [Member]
Originated current year	6,522,488		6,522,488		26,742,846
Originated prior year	26,799,710		26,799,710		20,620,971
Originated two years prior	19,609,339		19,609,339		102,163,479
Originated three years prior	99,318,676		99,318,676		31,658,834
Originated four years prior	29,797,378		29,797,378		25,961,474
Originated years prior	127,658,092		127,658,092		118,351,367
Revolving	138,007,695		138,007,695		145,384,614
Total loans	447,713,378		447,713,378		470,883,585
Real Estate Loan [Member] | Residential Portfolio Segment [Member] | Special Mention [Member]
Originated current year	0		0		0
Originated prior year	0		0		0
Originated two years prior	0		0		0
Originated three years prior	0		0		0
Originated four years prior	0		0		186,177
Originated years prior	808,122		808,122		593,420
Revolving	596,186		596,186		598,461
Total loans	1,404,308		1,404,308		1,378,058
Real Estate Loan [Member] | Residential Portfolio Segment [Member] | Substandard [Member]
Originated current year	0		0		0
Originated prior year	0		0		0
Originated two years prior	0		0		0
Originated three years prior	0		0		0
Originated four years prior	0		0		0
Originated years prior	142,661		142,661		146,730
Revolving	335,947		335,947		339,169
Total loans	478,608		478,608		485,899
Real Estate Loan [Member] | Residential Portfolio Segment [Member] | Doubtful [Member]
Originated current year	0		0		0
Originated prior year	0		0		0
Originated two years prior	0		0		0
Originated three years prior	0		0		0
Originated four years prior	0		0		0
Originated years prior	0		0		0
Revolving	0		0		0
Total loans	0		0		0
Real Estate Loan [Member] | Commercial Real Estate Portfolio Segment [Member]
Originated current year	8,598,378		8,598,378		14,935,535
Originated prior year	15,977,066		15,977,066		11,625,202
Originated two years prior	15,379,349		15,379,349		5,363,747
Originated three years prior	5,259,733		5,259,733		2,030,427
Originated four years prior	1,719,653		1,719,653		42,533,113
Originated years prior	75,503,736		75,503,736		39,901,866
Revolving	373,886		373,886		1,618,976
Total loans	122,811,801		122,811,801		118,008,866
Originated current year, writeoffs			0		0
Originated prior year, writeoffs			0		0
Originated two years prior, writeoffs			0		0
Originated three years prior, writeoffs			0		0
Originated four years prior, writeoffs			0		0
Originated years prior, writeoffs			0		0
Revolving, writeoffs			0		0
Gross charge-offs by vintage	(0)	(0)	(0)	(0)	0
Gross charge-offs by vintage	(0)	(0)	(0)	(0)	0
Real Estate Loan [Member] | Commercial Real Estate Portfolio Segment [Member] | Pass [Member]
Originated current year	8,598,378		8,598,378		14,935,535
Originated prior year	15,977,066		15,977,066		11,625,202
Originated two years prior	15,379,349		15,379,349		5,363,747
Originated three years prior	5,259,733		5,259,733		2,030,427
Originated four years prior	1,719,653		1,719,653		42,533,113
Originated years prior	75,503,736		75,503,736		38,696,841
Revolving	373,886		373,886		1,618,976
Total loans	122,811,801		122,811,801		116,803,841
Real Estate Loan [Member] | Commercial Real Estate Portfolio Segment [Member] | Special Mention [Member]
Originated current year	0		0		0
Originated prior year	0		0		0
Originated two years prior	0		0		0
Originated three years prior	0		0		0
Originated four years prior	0		0		0
Originated years prior	0		0		754,633
Revolving	0		0		0
Total loans	0		0		754,633
Real Estate Loan [Member] | Commercial Real Estate Portfolio Segment [Member] | Substandard [Member]
Originated current year	0		0		0
Originated prior year	0		0		0
Originated two years prior	0		0		0
Originated three years prior	0		0		0
Originated four years prior	0		0		0
Originated years prior	0		0		450,392
Revolving	0		0		0
Total loans	0		0		450,392
Real Estate Loan [Member] | Commercial Real Estate Portfolio Segment [Member] | Doubtful [Member]
Originated current year	0		0		0
Originated prior year	0		0		0
Originated two years prior	0		0		0
Originated three years prior	0		0		0
Originated four years prior	0		0		0
Originated years prior	0		0		0
Revolving	0		0		0
Total loans	0		0		0
Real Estate Loan [Member] | Multi-Family Real Estate [Member]
Originated current year	1,735,716		1,735,716		0
Originated prior year	0		0		0
Originated two years prior	0		0		2,262,457
Originated three years prior	5,085,066		5,085,066		0
Originated four years prior	0		0		0
Originated years prior	5,890,652		5,890,652		1,909,140
Revolving	57,652,735		57,652,735		69,980,821
Total loans	70,364,169		70,364,169		74,152,418
Originated current year, writeoffs			0		0
Originated prior year, writeoffs			0		0
Originated two years prior, writeoffs			0		0
Originated three years prior, writeoffs			0		0
Originated four years prior, writeoffs			0		0
Originated years prior, writeoffs			0		0
Revolving, writeoffs			0		0
Gross charge-offs by vintage	(0)	(0)	(0)	(0)	0
Gross charge-offs by vintage	(0)	(0)	(0)	(0)	0
Real Estate Loan [Member] | Multi-Family Real Estate [Member] | Pass [Member]
Originated current year	1,735,716		1,735,716		0
Originated prior year	0		0		0
Originated two years prior	0		0		2,262,457
Originated three years prior	5,085,066		5,085,066		0
Originated four years prior	0		0		0
Originated years prior	5,890,652		5,890,652		1,909,140
Revolving	57,652,735		57,652,735		69,980,821
Total loans	70,364,169		70,364,169		74,152,418
Real Estate Loan [Member] | Multi-Family Real Estate [Member] | Special Mention [Member]
Originated current year	0		0		0
Originated prior year	0		0		0
Originated two years prior	0		0		0
Originated three years prior	0		0		0
Originated four years prior	0		0		0
Originated years prior	0		0		0
Revolving	0		0		0
Total loans	0		0		0
Real Estate Loan [Member] | Multi-Family Real Estate [Member] | Substandard [Member]
Originated current year	0		0		0
Originated prior year	0		0		0
Originated two years prior	0		0		0
Originated three years prior	0		0		0
Originated four years prior	0		0		0
Originated years prior	0		0		0
Revolving	0		0		0
Total loans	0		0		0
Real Estate Loan [Member] | Multi-Family Real Estate [Member] | Doubtful [Member]
Originated current year	0		0		0
Originated prior year	0		0		0
Originated two years prior	0		0		0
Originated three years prior	0		0		0
Originated four years prior	0		0		0
Originated years prior	0		0		0
Revolving	0		0		0
Total loans	0		0		0
Real Estate Loan [Member] | Construction Loans [Member]
Originated current year	0		0		0
Originated prior year	0		0		0
Originated two years prior	0		0		0
Originated three years prior	0		0		0
Originated four years prior	0		0		0
Originated years prior	0		0		0
Revolving	25,231,859		25,231,859		43,183,657
Total loans	25,231,859		25,231,859		43,183,657
Originated current year, writeoffs			0		0
Originated prior year, writeoffs			0		0
Originated two years prior, writeoffs			0		0
Originated three years prior, writeoffs			0		0
Originated four years prior, writeoffs			0		0
Originated years prior, writeoffs			0		0
Revolving, writeoffs			0		0
Gross charge-offs by vintage	(0)	(0)	(0)	(0)	0
Gross charge-offs by vintage	(0)	$ (0)	(0)	$ (0)	0
Real Estate Loan [Member] | Construction Loans [Member] | Pass [Member]
Originated current year	0		0		0
Originated prior year	0		0		0
Originated two years prior	0		0		0
Originated three years prior	0		0		0
Originated four years prior	0		0		0
Originated years prior	0		0		0
Revolving	14,338,146		14,338,146		32,289,944
Total loans	14,338,146		14,338,146		32,289,944
Real Estate Loan [Member] | Construction Loans [Member] | Special Mention [Member]
Originated current year	0		0		0
Originated prior year	0		0		0
Originated two years prior	0		0		0
Originated three years prior	0		0		0
Originated four years prior	0		0		0
Originated years prior	0		0		0
Revolving	0		0		0
Total loans	0		0		0
Real Estate Loan [Member] | Construction Loans [Member] | Substandard [Member]
Originated current year	0		0		0
Originated prior year	0		0		0
Originated two years prior	0		0		0
Originated three years prior	0		0		0
Originated four years prior	0		0		0
Originated years prior	0		0		0
Revolving	10,893,713		10,893,713		10,893,713
Total loans	10,893,713		10,893,713		10,893,713
Real Estate Loan [Member] | Construction Loans [Member] | Doubtful [Member]
Originated current year	0		0		0
Originated prior year	0		0		0
Originated two years prior	0		0		0
Originated three years prior	0		0		0
Originated four years prior	0		0		0
Originated years prior	0		0		0
Revolving	0		0		0
Total loans	0		0		0
Real Estate Loan [Member] | Commercial and Industrial [Member]
Total loans	$ 3,703,476		$ 3,703,476		$ 6,163,747

X

- Definition

Amount, excluding accrued interest, of decrease in allowance for credit loss on financing receivable from writeoff. Excludes net investment in lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 13
-Subparagraph (d)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-13

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 6
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-6

+ Details

Name:	us-gaap_FinancingReceivableExcludingAccruedInterestAllowanceForCreditLossWriteoff
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Amortized cost excluding accrued interest, before allowance for credit loss, of financing receivable. Excludes net investment in lease.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 45
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479344/326-20-45-1

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 3B
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-3B

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 5
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-5

+ Details

Name:	us-gaap_FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLoss
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Amortized cost excluding accrued interest, of financing receivable originated more than five years prior to current fiscal year. Excludes net investment in lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 55
-Paragraph 79
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479294/326-20-55-79

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 6
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-6

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 3B
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-3B

+ Details

Name:	us-gaap_FinancingReceivableExcludingAccruedInterestOriginatedMoreThanFiveYearsBeforeCurrentFiscalYear
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Amount, excluding accrued interest, of writeoff of financing receivable originated more than five years before current fiscal year. Excludes net investment in lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 6
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-6

+ Details

Name:	us-gaap_FinancingReceivableExcludingAccruedInterestOriginatedMoreThanFiveYearsBeforeCurrentFiscalYearWriteoff
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Amortized cost excluding accrued interest, of financing receivable that can be withdrawn, repaid, and redrawn.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 55
-Paragraph 79
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479294/326-20-55-79

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 6
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-6

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 3B
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-3B

+ Details

Name:	us-gaap_FinancingReceivableExcludingAccruedInterestRevolving
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Amount, excluding accrued interest, of writeoff of financing receivable that can be withdrawn, repaid, and redrawn.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 6
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-6

+ Details

Name:	us-gaap_FinancingReceivableExcludingAccruedInterestRevolvingWriteoff
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Amortized cost excluding accrued interest, of financing receivable originated four years prior to current fiscal year. Excludes net investment in lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 55
-Paragraph 79
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479294/326-20-55-79

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 6
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-6

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 3B
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-3B

+ Details

Name:	us-gaap_FinancingReceivableExcludingAccruedInterestYearFiveOriginatedFourYearsBeforeCurrentFiscalYear
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Amount, excluding accrued interest, of writeoff of financing receivable originated four years before current fiscal year. Excludes net investment in lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 6
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-6

+ Details

Name:	us-gaap_FinancingReceivableExcludingAccruedInterestYearFiveOriginatedFourYearsBeforeCurrentFiscalYearWriteoff
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Amortized cost excluding accrued interest, of financing receivable originated three years prior to current fiscal year. Excludes net investment in lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 55
-Paragraph 79
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479294/326-20-55-79

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 6
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-6

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 3B
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-3B

+ Details

Name:	us-gaap_FinancingReceivableExcludingAccruedInterestYearFourOriginatedThreeYearsBeforeCurrentFiscalYear
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Amount, excluding accrued interest, of writeoff of financing receivable originated three years before current fiscal year. Excludes net investment in lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 6
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-6

+ Details

Name:	us-gaap_FinancingReceivableExcludingAccruedInterestYearFourOriginatedThreeYearsBeforeCurrentFiscalYearWriteoff
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Amortized cost excluding accrued interest, of financing receivable originated in current fiscal year. Excludes net investment in lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 55
-Paragraph 79
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479294/326-20-55-79

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 6
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-6

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 3B
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-3B

+ Details

Name:	us-gaap_FinancingReceivableExcludingAccruedInterestYearOneOriginatedCurrentFiscalYear
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Amount, excluding accrued interest, of writeoff of financing receivable originated in current fiscal year. Excludes net investment in lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 6
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-6

+ Details

Name:	us-gaap_FinancingReceivableExcludingAccruedInterestYearOneOriginatedCurrentFiscalYearWriteoff
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Amortized cost excluding accrued interest, of financing receivable originated two years prior to current fiscal year. Excludes net investment in lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 55
-Paragraph 79
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479294/326-20-55-79

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 6
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-6

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 3B
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-3B

+ Details

Name:	us-gaap_FinancingReceivableExcludingAccruedInterestYearThreeOriginatedTwoYearsBeforeCurrentFiscalYear
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Amount, excluding accrued interest, of writeoff of financing receivable originated two years before current fiscal year. Excludes net investment in lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 6
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-6

+ Details

Name:	us-gaap_FinancingReceivableExcludingAccruedInterestYearThreeOriginatedTwoYearsBeforeCurrentFiscalYearWriteoff
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Amortized cost excluding accrued interest of financing receivable originated in fiscal year prior to current fiscal year. Excludes net investment in lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 55
-Paragraph 79
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479294/326-20-55-79

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 6
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-6

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 3B
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-3B

+ Details

Name:	us-gaap_FinancingReceivableExcludingAccruedInterestYearTwoOriginatedFiscalYearBeforeCurrentFiscalYear
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Amount, excluding accrued interest, of writeoff of financing receivable originated in fiscal year before current fiscal year. Excludes net investment in lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 6
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-6

+ Details

Name:	us-gaap_FinancingReceivableExcludingAccruedInterestYearTwoOriginatedFiscalYearBeforeCurrentFiscalYearWriteoff
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Details

Name:	us-gaap_FinancingReceivablePortfolioSegmentAxis=bsbk_CommercialAndIndustrialMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_InternalCreditAssessmentAxis=us-gaap_PassMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_InternalCreditAssessmentAxis=us-gaap_SpecialMentionMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_InternalCreditAssessmentAxis=us-gaap_SubstandardMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_InternalCreditAssessmentAxis=us-gaap_DoubtfulMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FinancingReceivablePortfolioSegmentAxis=us-gaap_ConsumerPortfolioSegmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=us-gaap_RealEstateLoanMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FinancingReceivablePortfolioSegmentAxis=us-gaap_ResidentialPortfolioSegmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FinancingReceivablePortfolioSegmentAxis=us-gaap_CommercialRealEstatePortfolioSegmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FinancingReceivablePortfolioSegmentAxis=bsbk_MultifamilyRealEstateMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FinancingReceivablePortfolioSegmentAxis=us-gaap_ConstructionLoansMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: