SHARE PURCHASE AND SUBSCRIPTION AGREEMENTS - Variable Interest Entities (Details) - USD ($)	Mar. 31, 2021	Dec. 31, 2020	Mar. 31, 2020
Variable Interest Entity
Cash and cash equivalents	$ 12,426,704	$ 10,895,044	$ 16,295,062
Accounts receivable, net	12,995,738	11,138,933
Inventory	6,979,844	4,439,839
Prepaid expense and other current assets	2,559,313	3,211,448
Total current assets	35,403,755	29,785,389
Fixed assets, net	46,215,483	46,440,516
Finance lease right-of-use assets	1,432,728	1,536,711
Operating lease right-of-use assets	33,057,790	33,315,876
Intangible assets, net	8,914,572	9,397,441
Other assets	1,622,225	1,624,025
TOTAL ASSETS	126,646,553	122,099,958
Accounts payable	10,318,483	10,484,911
Accrued expenses	1,862,430	2,053,106
Finance lease liability-current	5,519,665	5,614,785
Operating lease liability-current	8,883,009	4,367,169
Total current liabilities	27,459,290	23,850,412
Finance lease liability-long term	816,257	945,612
Operating lease liability-long term	27,538,125	27,701,091
Total liabilities	59,247,427	$ 60,809,023
Variable Interest Entity, Primary Beneficiary
Variable Interest Entity
Cash and cash equivalents	9,638,301		7,748,360
Accounts receivable, net	4,782,206		3,699,655
Inventory	740,156		727,684
Prepaid expense and other current assets	500,722		243,581
Total current assets	15,661,385		12,419,280
Fixed assets, net	6,607,607		5,983,134
Finance lease right-of-use assets	956,035		777,091
Operating lease right-of-use assets	306,876		505,020
Intangible assets, net	1,001,896		1,252,807
Other assets	106,643		120,504
TOTAL ASSETS	24,640,442		21,057,836
Accounts payable	1,858,512		1,822,171
Accrued expenses	353,574		491,505
Finance lease liability-current	351,966		209,368
Operating lease liability-current	259,925		300,937
Total current liabilities	2,823,977		2,823,981
Finance lease liability-long term	553,193		555,375
Operating lease liability-long term	46,951		204,083
Total liabilities	$ 3,424,121		$ 3,583,439