Inventories (Details) - USD ($)	Dec. 31, 2020	Dec. 31, 2019
Inventories	$ 10,006,897	$ 9,509,454
ECHG
Inventories	843,405	894,435
Resale | ECHG
Inventories	557,959	351,958
Recycle | ECHG
Inventories	285,446	542,477
DGSE
Inventories	9,163,492	8,615,019
DGSE | Resale
Inventories	8,971,815	8,213,551
DGSE | Recycle
Inventories	$ 191,677	$ 401,468