SUPPLEMENTARY FINANCIAL INFORMATION (UNAUDITED) (Details) - USD ($)	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018
Selected Quarterly Financial Information [Abstract]
Net revenues	$ 12,602,241	$ 18,600,641	$ 16,433,177	$ 11,590,798	$ 12,038,389	$ 18,370,511	$ 16,512,724	$ 12,219,946	$ 59,227,000	$ 59,142,000
Operating expenses	11,721,832	17,127,279	15,128,423	11,613,559	8,779,324	16,338,866	15,513,258	10,863,193	55,591,093	51,494,641
Net income	$ 553,460	$ 1,150,485	$ 957,757	$ 56,572	$ 2,370,558	$ 1,632,845	$ 725,351	$ 989,690	$ 2,718,274	$ 5,718,444
Basic net income per share	$ 0.12	$ 0.25	$ 0.21	$ 0.01	$ 0.52	$ 0.36	$ 0.16	$ 0.22	$ 0.59	$ 1.28
Diluted net income per share	$ 0.12	$ 0.25	$ 0.21	$ 0.01	$ 0.52	$ 0.36	$ 0.16	$ 0.22	$ 0.59	$ 1.26