STOCKHOLDERS EQUITY (Details)	6 Months Ended
	Jun. 30, 2021 $ / shares shares
Stockholders' equity:
Shares purchasable under outstanding warrants at December 31, 2020 beginning | shares	3,206,910
Stock purchase warrants issued | shares	0
Stock purchase warrants exercised | shares	(1,815,012)
Stock purchase warrants expired | shares	(231)
Shares purchasable under outstanding warrants at June 30, 2021, ending | shares	1,391,667
Average purchase price per share outstanding, beginning | $ / shares	$ 6.36
Issued | $ / shares	0.00
Exercised | $ / shares	6.64
Expired, price per share | $ / shares	7.58
Average purchase price per share outstanding, ending | $ / shares	$ 6.00