SIGNIFICANT ACCOUNTING POLICIES, Short Term Investments (Details) - USD ($)	3 Months Ended	12 Months Ended
	Mar. 31, 2019	Dec. 31, 2019	Dec. 31, 2018	[1]	Dec. 31, 2017	[1]
Short-term investments [Abstract]
Payments to acquire short-term investments	$ 4,999,750	$ 18,094,775	$ 0		$ 0
U.S. Treasuries [Member]
Short-term investments [Abstract]
Payments to acquire short-term investments		$ 9,200,000

[1] As described in Note 2 to these Consolidated Financial Statements, we have restated the Consolidated Financial Statements.