XML 62 R49.htm IDEA: XBRL DOCUMENT v3.21.1

Note 19 - Off-balance Sheet Activities (Tables)

12 Months Ended

Dec. 31, 2020

Notes Tables

Credit Risk, Concentrations [Table Text Block]

		2020								2019
		Fixed				Variable				Fixed				Variable
(Dollars in thousands)		Rate				Rate				Rate				Rate
Unused lines of credit and letters of credit		$	48,622			$	231,667			$	38,064			$	177,447
Commitments to fund loans (at market rates)			10,691				3,954				18,216				4,580

X

- Definition

Tabular disclosure of contractual amount of financial instruments with off-balance sheet risk.

+ References

No definition available.

+ Details

Name:	cofs_CreditRiskConcentrationsTableTextBlock
Namespace Prefix:	cofs_
Data Type:	nonnum:textBlockItemType
Balance Type:	na
Period Type:	duration

X

- References

No definition available.

+ Details

Name:	us-gaap_TableTextBlock
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration