INTANGIBLE ASSETS, NET - Schedule of Intangible Assets (Details) - USD ($)	Mar. 31, 2020	Dec. 31, 2019
Finite-Lived Intangible Assets [Line Items]
Intangible assets, gross	$ 7,537,023	$ 6,576,816
Accumulated amortization	2,898,121	2,756,356
Intangible assets, net	4,638,902	3,820,460
Trademarks
Finite-Lived Intangible Assets [Line Items]
Intangible assets, gross	311,145	309,395
Software
Finite-Lived Intangible Assets [Line Items]
Intangible assets, gross	2,396,580	2,288,062
Trade name
Finite-Lived Intangible Assets [Line Items]
Intangible assets, gross	475,511	492,408
Contractual and customer relationships
Finite-Lived Intangible Assets [Line Items]
Intangible assets, gross	3,767,021	3,010,480
Non-compete
Finite-Lived Intangible Assets [Line Items]
Intangible assets, gross	384,855	268,459
Other
Finite-Lived Intangible Assets [Line Items]
Intangible assets, gross	$ 201,911	$ 208,012