INTANGIBLE ASSETS, NET - Schedule of Intangible Assets (Details) - USD ($)	Jun. 30, 2020	Dec. 31, 2019
Finite-Lived Intangible Assets [Line Items]
Intangible assets, gross	$ 7,756,251	$ 6,576,816
Accumulated amortization	3,169,908	2,756,356
Intangible assets, net	4,586,343	3,820,460
Trademarks
Finite-Lived Intangible Assets [Line Items]
Intangible assets, gross	323,076	309,395
Software
Finite-Lived Intangible Assets [Line Items]
Intangible assets, gross	2,473,813	2,288,062
Trade name
Finite-Lived Intangible Assets [Line Items]
Intangible assets, gross	481,744	492,408
Contractual and customer relationships
Finite-Lived Intangible Assets [Line Items]
Intangible assets, gross	3,881,040	3,010,480
Non-compete
Finite-Lived Intangible Assets [Line Items]
Intangible assets, gross	394,844	268,459
Other
Finite-Lived Intangible Assets [Line Items]
Intangible assets, gross	$ 201,734	$ 208,012