REVENUE RECOGNITION (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Revenues	$ 33,724,006	$ 20,545,607	$ 59,214,447	$ 46,374,750
Gross margin	$ 7,127,890	$ 4,471,258	$ 13,432,154	$ 9,772,538
Margin	21.10%	21.80%	22.70%	21.10%
ECHG [Member]
Revenues	$ 10,711,682	$ 6,196,578	$ 17,287,622	$ 11,662,137
Gross margin	$ 4,030,894	$ 2,856,493	$ 7,527,523	$ 5,793,591
Margin	37.60%	46.10%	43.50%	49.70%
ECHG [Member] | Resale
Revenues	$ 8,595,910	$ 4,257,032	$ 13,336,902	$ 7,783,260
Gross margin	$ 3,019,685	$ 2,022,090	$ 5,631,869	$ 3,442,266
Margin	35.10%	47.50%	42.20%	44.20%
ECHG [Member] | Recycle
Revenues	$ 2,115,772	$ 1,939,546	$ 3,950,720	$ 3,878,877
Gross margin	$ 1,011,209	$ 834,403	$ 1,895,654	$ 2,351,325
Margin	47.80%	43.00%	48.00%	60.60%
DGSE [Member]
Revenues	$ 23,012,324	$ 14,349,029	$ 41,926,825	$ 34,712,613
Gross margin	$ 3,096,996	$ 1,614,765	$ 5,904,631	$ 3,978,947
Margin	13.50%	11.30%	14.10%	11.50%
DGSE [Member] | Resale
Revenues	$ 20,893,838	$ 13,421,969	$ 38,214,479	$ 31,963,866
Gross margin	$ 2,678,640	$ 1,444,814	$ 5,135,784	$ 3,492,247
Margin	12.80%	10.80%	13.40%	10.90%
DGSE [Member] | Recycle
Revenues	$ 2,118,486	$ 927,060	$ 3,712,346	$ 2,748,747
Gross margin	$ 418,356	$ 169,951	$ 768,847	$ 486,700
Margin	19.70%	18.30%	20.70%	17.70%