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Minimum Regulatory Capital Requirements (Tables)

12 Months Ended

Dec. 31, 2019

Banking and Thrift [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, 2019
Common equity Tier 1 capital to risk weighted assets
Isabella Bank	$	150,093			11.86	%		$	88,587			7.000	%		$	82,260			6.50	%
Consolidated	159,794				12.56	%		89,090				7.000	%		N/A				N/A
Tier 1 capital to risk weighted assets
Isabella Bank	150,093				11.86	%		107,570				8.500	%		101,243				8.00	%
Consolidated	159,794				12.56	%		108,180				8.500	%		N/A				N/A
Total capital to risk weighted assets
Isabella Bank	158,032				12.49	%		132,881				10.500	%		126,554				10.00	%
Consolidated	167,733				13.18	%		133,635				10.500	%		N/A				N/A
Tier 1 capital to average assets
Isabella Bank	150,093				8.54	%		70,288				4.00	%		87,861				5.00	%
Consolidated	159,794				9.01	%		70,945				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, 2018
Common equity Tier 1 capital to risk weighted assets
Isabella Bank	$	143,429			11.75	%		$	77,826			6.375	%		$	79,352			6.50	%
Consolidated	154,705				12.58	%		78,431				6.375	%		N/A				N/A
Tier 1 capital to risk weighted assets
Isabella Bank	143,429				11.75	%		96,138				7.875	%		97,664				8.00	%
Consolidated	154,705				12.58	%		96,885				7.875	%		N/A				N/A
Total capital to risk weighted assets
Isabella Bank	151,804				12.43	%		120,554				9.875	%		122,080				10.00	%
Consolidated	163,080				13.26	%		121,491				9.875	%		N/A				N/A
Tier 1 capital to average assets
Isabella Bank	143,429				8.07	%		71,085				4.000	%		88,856				5.00	%
Consolidated	154,705				8.72	%		70,996				4.000	%		N/A				N/A

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- References

No definition available.

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X

- 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://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 505
-Section 50
-Paragraph 1G
-URI http://asc.fasb.org/extlink&oid=84167132&loc=SL5958577-112826

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 505
-Section 50
-Paragraph 1H
-Subparagraph (c)(2)
-URI http://asc.fasb.org/extlink&oid=84167132&loc=d3e65071-112826

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 505
-Section 50
-Paragraph 1
-Subparagraph (c)(1)
-URI http://asc.fasb.org/extlink&oid=84167132&loc=SL5958568-112826

Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 505
-Section 50
-Paragraph 1B
-URI http://asc.fasb.org/extlink&oid=84167132&loc=SL5958570-112826

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