7. STOCK OPTION PLANS (Details 1) - Directors Plan - $ / shares	12 Months Ended
Dec. 31, 2018	Dec. 31, 2017
Number of shares outstanding, beginning	330,000	270,000
Granted	110,000	90,000
Exercised	(97,500)	(30,000)
Number of shares outstanding, ending	342,500	330,000
Number of shares exercisable	327,500
Weighted average exercise price, beginning	$ 1.32	$ 0.95
Granted	2.51	2.07
Exercised	1.29	0.26
Weighted average exercise price, ending	1.71	$ 1.32
Weighted average exercise price exercisable	$ 1.66
Weighted average remaining contractual life outstanding	2 years 6 months 7 days	2 years 9 months 18 days
Weighted average remaining contractual life exercisable	2 years 6 months 7 days

The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan.

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The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of options outstanding and currently exercisable under the stock option plan.

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Net number of share options (or share units) granted during the period.

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Number of options outstanding, including both vested and non-vested options.

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Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan.

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Weighted average price at which option holders acquired shares when converting their stock options into shares.

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Weighted average per share amount at which grantees can acquire shares of common stock by exercise of options.

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Weighted average remaining contractual term for vested portions of options outstanding and currently exercisable or convertible, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Weighted average remaining contractual term for option awards outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Number of share options (or share units) exercised during the current period.

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