FAIR VALUE OF FINANCIAL INSTRUMENTS (Details) - USD ($)	12 Months Ended
	Dec. 31, 2017	Mar. 31, 2017	Dec. 31, 2016	Dec. 01, 2016	Dec. 31, 2014
Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of contingent purchase price payment	$ 1,100,000		$ 7,100,000		$ 16,000,000
Fair Value, Measurements, Recurring | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of contingent purchase price payment	1,100,000		7,100,000
Holly Hunt | Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of contingent purchase price payment	0		6,000,000
Holly Hunt | Fair Value, Measurements, Recurring | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of contingent purchase price payment	0	$ 6,000,000	6,000,000
DatesWeiser | Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of contingent purchase price payment	1,100,000		1,100,000	$ 4,000,000.0
DatesWeiser | Fair Value, Measurements, Recurring | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of contingent purchase price payment	$ 1,100,000		$ 1,100,000	$ 1,100,000
Maximum | DatesWeiser
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Discount rate used in fair value estimation	10.00%
Maximum amount of possible future contingent payments under the agreement	$ 3,000,000