BASIS OF PRESENTATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Cost of revenues (Details 1) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Accounting Policies [Abstract]
Compensation, employee benefits and related taxes	$ 1,557,119	$ 1,538,881	$ 3,240,245	$ 3,292,814
Professional fees	993,438	1,762,227	2,254,755	3,348,132
Depreciation	134,629	45,266	216,062	85,703
Rent, utilities, telephone and communications	104,604	103,007	208,067	196,205
Other cost of revenues	75,995	71,242	139,054	165,294
Cost of revenues	$ 2,865,785	$ 3,520,623	$ 6,058,183	$ 7,088,148