Segments - Schedule of Segment Reporting (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Sales	$ 20,937,437	$ 12,733,262	$ 36,956,967	$ 26,789,135
Cost of goods sold	17,572,122	10,542,784	31,373,170	22,096,650
Gross profit	3,365,315	2,190,478	5,583,797	4,692,485
Selling, general and administrative expenses	2,676,240	1,773,912	4,417,581	3,813,947
Depreciation and amortization	85,348	87,732	159,672	177,484
Total expenses	2,761,588	1,861,644	4,577,253	3,991,431
Operating income	603,727	328,834	1,006,544	701,054
Other (income) expense, net	(56,728)	3,030	(53,330)	(52,295)
Interest expense	57,509	45,648	92,058	92,530
Income before income taxes	602,946	280,156	967,816	660,819
Income tax expense	13,419	5,977	23,654	40,433
Net income per segment	589,527	$ 274,179	$ 944,162	$ 620,386
Echo Environmental, LLC [Member]
Sales	2,358,800
Cost of goods sold	1,263,313
Gross profit	1,095,487
Selling, general and administrative expenses	801,642
Depreciation and amortization	10,899
Total expenses	812,541
Operating income	282,946
Other (income) expense, net
Interest expense	31,852
Income before income taxes	251,094
Income tax expense	5,636
Net income per segment	245,458
DGSE [Member]
Sales	18,578,637
Cost of goods sold	16,308,809
Gross profit	2,269,828
Selling, general and administrative expenses	1,874,598
Depreciation and amortization	74,449
Total expenses	1,949,047
Operating income	320,781
Other (income) expense, net	(56,728)
Interest expense	25,657
Income before income taxes	351,852
Income tax expense	7,783
Net income per segment	$ 344,069