14. COMMON STOCK (Details) - Common Stock [Member] - Nonvested Shares [Member]	12 Months Ended
	Dec. 31, 2019 $ / shares shares
Number of Nonvested Shares
Number of Nonvested Shares Outstanding, Beginning | shares	58,750
Number of Nonvested Shares Granted | shares	67,624
Number of Nonvested Shares Vested | shares	(56,937)
Number of Nonvested Shares Forfeited | shares	(25,000)
Number of Nonvested Shares Outstanding, Ending | shares	44,437
Weighted Average Exercise Price
Weighted Average Exercise Price Outstanding, Beginning | $ / shares	$ 8.72
Weighted Average Exercise Price Granted | $ / shares	5.67
Weighted Average Exercise Price Vested | $ / shares	6.16
Weighted Average Exercise Price Forfeited | $ / shares	7.5
Weighted Average Exercise Price Outstanding, Ending | $ / shares	$ 5.63