SHARE PURCHASE AND SUBSCRIPTION AGREEMENTS - Variable Interest Entities (Details) - USD ($)	Jun. 30, 2020	Dec. 31, 2019	Jun. 30, 2019
Variable Interest Entity
Cash and cash equivalents	$ 17,754,312	$ 4,099,655	$ 498,219
Accounts receivable, net	9,163,208	12,138,078
Inventory	3,812,752	6,547,479
Prepaid expense and other current assets	2,499,104	4,452,920
Total current assets	33,329,501	27,406,908
Fixed assets, net	43,985,791	44,761,397
Finance lease right-of-use assets	1,613,661	851,570
Operating lease right-of-use assets	34,739,105	35,586,885
Intangible assets, net	10,363,179	11,243,800
Other assets	1,219,301	840,754
TOTAL ASSETS	125,250,538	120,759,919
Accounts payable	8,373,449	7,620,098
Accrued expenses	2,950,439	5,016,132
Finance lease liability-current	6,004,500	5,885,304
Operating lease liability-current	2,814,306	2,017,345
Total current liabilities	21,492,029	24,797,299
Finance lease liability-long term	1,103,231	610,450
Operating lease liability-long term	28,734,605	29,701,581
Total liabilities	59,151,607	$ 69,511,546
Variable Interest Entity, Primary Beneficiary
Variable Interest Entity
Cash and cash equivalents	8,407,926
Accounts receivable, net	3,031,746
Inventory	457,119
Prepaid expense and other current assets	439,702
Total current assets	12,336,493
Fixed assets, net	5,719,408
Finance lease right-of-use assets	1,050,973
Operating lease right-of-use assets	437,716
Intangible assets, net	1,190,080
Other assets	108,643
TOTAL ASSETS	20,843,313
Accounts payable	1,247,601
Accrued expenses	288,694
Finance lease liability-current	301,443
Operating lease liability-current	285,837
Total current liabilities	2,123,575
Finance lease liability-long term	725,298
Operating lease liability-long term	151,879
Total liabilities	$ 3,000,752