Revenue Recognition - Schedule of Disaggregation of Revenue (Details) - USD ($)	3 Months Ended	9 Months Ended
Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Accounts, Notes, Loans and Financing Receivable [Line Items]
Revenues	$ 22,861,201	$ 13,659,395	$ 59,818,168	$ 40,448,530
Gross Profit	$ 5,186,454	$ 2,477,169	$ 10,770,251	$ 7,169,654
Margin	22.70%	18.10%	18.00%	17.70%
Echo Environmental, LLC [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Revenues	$ 6,208,274		$ 8,567,074
Gross Profit	3,167,602		4,263,089
Jewelry [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Revenues	4,036,825	$ 3,694,204	12,432,060	$ 13,519,276
Gross Profit	$ 1,149,134	$ 1,223,144	$ 3,715,091	$ 3,840,235
Margin	28.50%	33.10%	29.90%	28.40%
Bullion/Rare Coin [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Revenues	$ 9,621,146	$ 8,120,071	$ 30,543,290	$ 21,828,412
Gross Profit	$ 442,573	$ 727,555	$ 1,468,358	$ 2,128,921
Margin	4.60%	9.00%	4.80%	9.80%
Scrap [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Revenues	$ 2,547,912	$ 1,317,133	$ 5,514,091	$ 3,782,718
Gross Profit	$ 359,255	$ 226,090	$ 801,216	$ 669,461
Margin	14.10%	17.20%	14.50%	17.70%
Other [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Revenues	$ 447,044	$ 527,987	$ 2,761,652	$ 1,318,124
Gross Profit	$ 67,890	$ 300,380	$ 522,497	$ 531,037
Margin	15.20%	56.90%	18.90%	40.30%
Subtotal [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Revenues	$ 16,652,927	$ 13,659,395	$ 51,251,093	$ 40,448,530
Gross Profit	$ 2,018,852	$ 2,477,169	$ 6,507,162	$ 7,169,654
Margin	12.10%	18.10%	12.70%	17.70%
Subtotal [Member] \| Echo Environmental, LLC [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Revenues	$ 6,208,274		$ 8,567,075
Gross Profit	$ 3,167,602		$ 4,263,089
Margin	51.00%	0.00%	49.80%	0.00%
Recycle [Member] \| Echo Environmental, LLC [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Revenues	$ 5,133,181		$ 6,721,265
Gross Profit	$ 2,408,416		$ 3,156,235
Margin	46.90%	0.00%	47.00%	0.00%
Reuse [Member] \| Echo Environmental, LLC [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Revenues	$ 1,075,093		$ 1,845,810
Gross Profit	$ 759,186		$ 1,106,854
Margin	70.60%	0.00%	60.00%	0.00%

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