ACQUISITIONS - Summary of Fair Value of Assets Acquired and Liabilities Assumed (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 14, 2016	Nov. 17, 2016	Aug. 01, 2016	May 05, 2016	Dec. 31, 2015	Oct. 30, 2015	Oct. 08, 2015	Jun. 17, 2015	Feb. 04, 2015
Business Acquisition [Line Items]
Goodwill	$ 2,078,765					$ 858,532
Workhorse
Business Acquisition [Line Items]
Current assets		$ 9,432
Property, plant & equipment		0
Goodwill		23,052
Other intangible assets		20,900
Total assets acquired		53,384
Total liabilities assumed		(9,093)
Net assets acquired		$ 44,291
Precision Turbo
Business Acquisition [Line Items]
Current assets			$ 4,155
Property, plant & equipment			1,346
Goodwill			3,861
Other intangible assets			5,200
Total assets acquired			14,562
Total liabilities assumed			(716)
Net assets acquired			$ 13,846
Unitrac
Business Acquisition [Line Items]
Current assets					$ 12,136
Property, plant & equipment					1,768
Goodwill					1,388
Other intangible assets					1,230
Total assets acquired					16,522
Total liabilities assumed					(2,144)
Net assets acquired					$ 14,378
RMS
Business Acquisition [Line Items]
Current assets							$ 3,604
Property, plant & equipment							1,378
Goodwill							8,855
Other intangible assets							8,622
Total assets acquired							22,459
Total liabilities assumed							(3,749)
Net assets acquired							$ 18,710
Track IQ
Business Acquisition [Line Items]
Current assets								$ 660
Property, plant & equipment								121
Goodwill								6,490
Other intangible assets								3,246
Total assets acquired								10,517
Total liabilities assumed								(1,205)
Net assets acquired								$ 9,312
RCL
Business Acquisition [Line Items]
Current assets										$ 16,421
Property, plant & equipment										12,136
Goodwill										14,787
Other intangible assets										40,403
Total assets acquired										83,747
Total liabilities assumed										(5,736)
Net assets acquired										$ 78,011
Gerken
Business Acquisition [Line Items]
Current assets				$ 32,706
Property, plant & equipment				7,667
Goodwill				17,470
Other intangible assets				30,560
Other assets				1,706
Total assets acquired				90,109
Total liabilities assumed				(27,262)
Net assets acquired				$ 62,847
MTC
Business Acquisition [Line Items]
Current assets									$ 10,348
Property, plant & equipment									1,450
Goodwill									13,198
Other intangible assets									7,650
Other assets									114
Total assets acquired									32,760
Total liabilities assumed									(9,400)
Net assets acquired									$ 23,360