Note 19 - Other Receivable	12 Months Ended
Note 19 - Other Receivable	Dec. 31, 2018
Notes to Financial Statements
Loans, Notes, Trade and Other Receivables Disclosure [Text Block]	NOTE 19 - OTHER RECEIVABLE In May 2017, as amended on June 30, 2018, CEN entered into an agreement with Clear Com Media, Inc. ("Clear Com") to provide a line of credit to Clear Com in amounts up to CAD $1,000,000 ( $733,000 ) through June 30, 2020 ( maturity date) at a rate of 2% per annum. No allowance was considered necessary as of December 31, 2018. The agreement was entered into to support the development of technologies that may be of future value to the Company.

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.