4. GOODWILL (Details)	3 Months Ended	12 Months Ended
	Mar. 31, 2018 USD ($)	Mar. 31, 2018 USD ($) segment	Mar. 31, 2017 USD ($)
Goodwill.
Number of reporting units | segment		1
Goodwill	$ 7,978,000	$ 7,978,000	$ 7,978,000
Goodwill impairment	$ 0