Revenue Recognition - Schedule of Disaggregation of Revenue Listed by Sales Category and State (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Accounts, Notes, Loans and Financing Receivable [Line Items]
Revenues	$ 20,937,437	$ 12,733,262	$ 36,956,967	$ 26,789,135
Gross Profit	$ 3,365,315	$ 2,190,478	$ 5,583,797	$ 4,692,485
Margin	16.10%	17.20%	15.10%	17.50%
Echo Environmental, LLC [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Revenues	$ 2,358,800
Gross Profit	1,095,487
Texas [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Revenues	20,202,789	$ 12,197,398	$ 35,607,576	$ 25,391,871
Gross Profit	$ 3,148,376	$ 2,006,214	$ 5,152,522	$ 4,212,206
Margin	15.60%	16.40%	14.50%	16.60%
South Carolina [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Revenues	$ 734,648	$ 535,864	$ 1,349,391	$ 1,397,264
Gross Profit	$ 216,939	$ 184,537	$ 431,275	$ 480,279
Margin	29.50%	34.40%	32.00%	34.40%
South Carolina [Member] | Echo Environmental, LLC [Member] | 5/20/19 - 6/30/2019 [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Revenues
Gross Profit
Margin	0.00%	0.00%	0.00%	0.00%
Jewelry [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Revenues	$ 4,093,488	$ 4,525,109	$ 8,395,236	$ 9,825,072
Gross Profit	$ 1,240,299	$ 1,020,470	$ 2,565,957	$ 2,617,091
Margin	30.30%	22.60%	30.60%	26.60%
Jewelry [Member] | Texas [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Revenues	$ 3,863,109	$ 4,169,364	$ 7,757,744	$ 8,874,175
Gross Profit	$ 1,139,043	$ 908,970	$ 2,267,076	$ 2,270,136
Margin	29.50%	21.80%	29.20%	25.60%
Jewelry [Member] | South Carolina [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Revenues	$ 230,379	$ 355,745	$ 637,493	$ 950,897
Gross Profit	$ 101,256	$ 111,500	$ 298,881	$ 346,955
Margin	44.00%	31.30%	46.90%	36.50%
Bullion/Rare Coin [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Revenues	$ 10,937,998	$ 6,608,590	$ 20,922,144	$ 13,708,341
Gross Profit	$ 509,628	$ 847,585	$ 1,025,785	$ 1,401,366
Margin	4.70%	12.80%	4.90%	10.20%
Bullion/Rare Coin [Member] | Texas [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Revenues	$ 10,773,197	$ 6,514,586	$ 20,553,475	$ 13,404,768
Gross Profit	$ 481,379	$ 830,976	$ 982,971	$ 1,348,718
Margin	4.50%	12.80%	4.80%	10.10%
Bullion/Rare Coin [Member] | South Carolina [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Revenues	$ 164,801	$ 94,004	$ 368,669	$ 303,573
Gross Profit	$ 28,249	$ 16,882	$ 42,814	$ 52,648
Margin	17.10%	18.00%	11.60%	17.30%
Scrap [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Revenues	$ 1,748,028	$ 1,181,941	$ 2,966,179	$ 2,465,585
Gross Profit	$ 256,914	$ 233,887	$ 441,961	$ 443,371
Margin	14.70%	19.80%	14.90%	18.00%
Scrap [Member] | Texas [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Revenues	$ 1,748,028	$ 1,181,941	$ 2,966,179	$ 2,465,585
Gross Profit	$ 256,914	$ 233,887	$ 441,961	$ 443,371
Margin	14.70%	19.80%	14.90%	18.00%
Other [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Revenues	$ 1,799,123	$ 417,622	$ 2,314,608	$ 790,137
Gross Profit	$ 262,987	$ 88,536	$ 454,607	$ 230,657
Margin	14.60%	21.20%	19.60%	29.20%
Other [Member] | Texas [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Revenues	$ 1,459,655	$ 331,507	$ 1,971,378	$ 647,343
Gross Profit	$ 175,553	$ 32,381	$ 365,027	$ 149,981
Margin	12.00%	9.80%	18.50%	23.20%
Other [Member] | South Carolina [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Revenues	$ 339,468	$ 86,115	$ 343,229	$ 142,794
Gross Profit	$ 87,434	$ 56,155	$ 89,580	$ 80,676
Margin	25.80%	65.20%	26.10%	56.50%
Subtotal [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Revenues	$ 18,578,637	$ 12,733,262	$ 34,598,167	$ 26,789,135
Gross Profit	$ 2,269,828	$ 2,190,478	$ 4,488,310	$ 4,692,485
Margin	12.20%	17.20%	13.00%	17.50%
Subtotal [Member] | Echo Environmental, LLC [Member] | 5/20/19 - 6/30/2019 [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Revenues	$ 2,358,800		$ 2,358,800
Gross Profit	$ 1,095,487		$ 1,095,487
Margin	46.40%	0.00%	46.40%	0.00%
Subtotal [Member] | Texas [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Revenues	$ 17,843,989	$ 12,197,398	$ 33,248,776	$ 25,391,871
Gross Profit	$ 2,052,889	$ 2,006,214	$ 4,057,035	$ 4,212,206
Margin	11.50%	16.40%	12.20%	16.60%
Subtotal [Member] | Texas [Member] | Echo Environmental, LLC [Member] | 5/20/19 - 6/30/2019 [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Revenues	$ 2,358,800		$ 2,358,800
Gross Profit	$ 1,095,487		$ 1,095,487
Margin	46.40%	0.00%	46.40%	0.00%
Subtotal [Member] | South Carolina [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Revenues	$ 734,648	$ 535,864	$ 1,349,391	$ 1,397,264
Gross Profit	$ 216,939	$ 184,537	$ 431,275	$ 480,279
Margin	29.50%	34.40%	32.00%	34.40%
Subtotal [Member] | South Carolina [Member] | Echo Environmental, LLC [Member] | 5/20/19 - 6/30/2019 [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Revenues
Gross Profit
Margin	0.00%	0.00%	0.00%	0.00%
Recycle [Member] | Echo Environmental, LLC [Member] | 5/20/19 - 6/30/2019 [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Revenues	$ 1,588,084		$ 1,588,084
Gross Profit	$ 747,819		$ 747,819
Margin	47.10%	0.00%	47.10%	0.00%
Recycle [Member] | Texas [Member] | Echo Environmental, LLC [Member] | 5/20/19 - 6/30/2019 [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Revenues	$ 1,588,084		$ 1,588,084
Gross Profit	$ 747,819		$ 747,819
Margin	47.10%	0.00%	47.10%	0.00%
Reuse [Member] | Echo Environmental, LLC [Member] | 5/20/19 - 6/30/2019 [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Revenues	$ 770,716		$ 770,716
Gross Profit	$ 347,668		$ 347,668
Margin	45.10%	0.00%	45.10%	0.00%
Reuse [Member] | Texas [Member] | Echo Environmental, LLC [Member] | 5/20/19 - 6/30/2019 [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Revenues	$ 770,716		$ 770,716
Gross Profit	$ 347,668		$ 347,668
Margin	45.10%	0.00%	45.10%	0.00%