Note 20 - Other Receivable	12 Months Ended
Dec. 31, 2021
Notes to Financial Statements
Loans, Notes, Trade and Other Receivables Disclosure [Text Block]	NOTE 20 - OTHER RECEIVABLE In May 2017, as amended on June 30, 2018 and on February 16, 2021, CEN entered into an agreement with CCM to provide a line of credit to CCM in amounts up to CAD $1,000,000 ($785,400) through December 31, 2021 (maturity date) at a rate of 2% per annum. No allowance was considered necessary as of December 31, 2020. The agreement was entered into to support the development of technologies that may be of future value to the Company. Effective with the acquisition of CCM by CEN (Note 5), outstanding balances between CCM and CEN are eliminated in consolidation.

The entire disclosure for claims held for amounts due a entity, excluding financing receivables. Examples include, but are not limited to, trade accounts receivables, notes receivables, loans receivables. Includes disclosure for allowance for credit losses.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-URI http://asc.fasb.org/subtopic&trid=2196772

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