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Minimum Regulatory Capital Requirements (Tables)

12 Months Ended

Dec. 31, 2022

Banking Regulation, Risk-Based Information [Abstract]

Summary of compliance with regulatory capital requirements

Our actual capital amounts and ratios are also presented in the table.

			Actual												Minimum Capital Requirement												Minimum To Be Well Capitalized Under Prompt Corrective Action Provisions
			Amount						Ratio						Amount						Ratio						Amount						Ratio
December 31, 2022
Common equity Tier 1 capital to risk weighted assets
Isabella Bank			$	190,060					14.07		%				$	94,565					7.00		%				$	87,811					6.50		%
Consolidated			175,112						12.91		%				94,948						7.00		%				N/A						N/A
Tier 1 capital to risk weighted assets
Isabella Bank			190,060						14.07		%				114,829						8.50		%				108,075						8.00		%
Consolidated			175,112						12.91		%				115,295						8.50		%				N/A						N/A
Total capital to risk weighted assets
Isabella Bank			199,910						14.80		%				141,848						10.50		%				135,093						10.00		%
Consolidated			214,207						15.79		%				142,423						10.50		%				N/A						N/A
Tier 1 capital to average assets
Isabella Bank			190,060						9.36		%				81,181						4.00		%				101,476						5.00		%
Consolidated			175,112						8.61		%				81,392						4.00		%				N/A						N/A

			Actual												Minimum Capital Requirement												Minimum To Be Well Capitalized Under Prompt Corrective Action Provisions
			Amount						Ratio						Amount						Ratio						Amount						Ratio
December 31, 2021
Common equity Tier 1 capital to risk weighted assets
Isabella Bank			$	171,255					12.91		%				$	92,849					7.00		%				$	86,217					6.50		%
Consolidated			160,871						12.07		%				93,297						7.00		%				N/A						N/A
Tier 1 capital to risk weighted assets
Isabella Bank			171,255						12.91		%				112,746						8.50		%				106,114						8.00		%
Consolidated			160,871						12.07		%				113,289						8.50		%				N/A						N/A
Total capital to risk weighted assets
Isabella Bank			180,358						13.60		%				139,274						10.50		%				132,642						10.00		%
Consolidated			199,132						14.94		%				139,945						10.50		%				N/A						N/A
Tier 1 capital to average assets
Isabella Bank			171,255						8.54		%				80,171						4.00		%				100,214						5.00		%
Consolidated			160,871						7.97		%				80,733						4.00		%				N/A						N/A

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- References

No definition available.

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- Definition

Tabular disclosure of the capital amounts and ratios as of the balance sheet date, indicating whether the entity or entities are in compliance with regulatory capital requirements, by entity.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 505
-Section 50
-Paragraph 1B
-URI https://asc.fasb.org/extlink&oid=117337116&loc=SL5958570-112826

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 505
-Section 50
-Paragraph 1
-Subparagraph (c)(1)
-URI https://asc.fasb.org/extlink&oid=117337116&loc=SL5958568-112826

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