SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Narrative (Details)	12 Months Ended
	Dec. 31, 2018 USD ($) a	Dec. 31, 2017 USD ($)	Jan. 01, 2019 USD ($)	Nov. 30, 2018 USD ($)
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Liquid storage facility, number of acres | a	19
Collateral for line of credit				$ 1,500,000
Allowance for doubtful accounts	$ 831,768	$ 1,636,068
Impairment of goodwill	176,349	0
Impairment of long-lived assets	$ 0	$ 0
Minimum | Accounting Standards Update 2018-11 | Forecast
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Operating lease assets			$ 30,000,000
Operating lease liabilities			30,000,000
Maximum | Accounting Standards Update 2018-11 | Forecast
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Operating lease assets			35,000,000
Operating lease liabilities			$ 35,000,000