NON-CONTROLLING INTEREST - Additional Information (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014	Dec. 31, 2014	Nov. 26, 2014
Noncontrolling Interest [Line Items]
Payable pursuant to tax receivable agreement	$ 28,670		$ 28,670		$ 31,557
Adjustment to tax receivable agreement	$ 3,408	$ 0	$ 2,887	$ 0
Neff Holdings LLC
Noncontrolling Interest [Line Items]
Ownership percentage by parent	41.20%		41.20%		41.20%	41.20%
Ownership percentage by non-controlling interest	58.80%		58.80%		58.80%	58.80%