GOODWILL AND INTANGIBLE ASSETS, NET (Intangible Assets Components and Amortization Expenses Recognized) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	$ 91,553	$ 70,745
Accumulated amortization	(34,488)	(26,234)
Net carrying amount	57,065	44,511
Amortization of Intangible Assets	$ 8,511	$ 7,562	$ 8,170
Customer relationships
Finite-Lived Intangible Assets [Line Items]
Weighted average life at acquisition (in years)	9 years 5 months 27 days	10 years
Gross carrying amount	$ 78,042	$ 66,646
Accumulated amortization	(29,580)	(22,200)
Net carrying amount	48,462	44,446
Customer relationships | Depreciation and Amortization Expense
Finite-Lived Intangible Assets [Line Items]
Amortization of Intangible Assets	$ 7,637	6,643	6,858
Favorable lease
Finite-Lived Intangible Assets [Line Items]
Weighted average life at acquisition (in years)	11 years 2 months
Gross carrying amount	$ 5,500
Accumulated amortization	(410)
Net carrying amount	5,090
Favorable lease | Selling, General and Administrative Expenses
Finite-Lived Intangible Assets [Line Items]
Amortization of Intangible Assets	$ 410	$ 0	0
Trade names
Finite-Lived Intangible Assets [Line Items]
Weighted average life at acquisition (in years)	5 years 3 months 27 days	5 years
Gross carrying amount	$ 6,111	$ 4,099
Accumulated amortization	(4,300)	(4,034)
Net carrying amount	1,811	65
Trade names | Depreciation and Amortization Expense
Finite-Lived Intangible Assets [Line Items]
Amortization of Intangible Assets	$ 266	896	1,139
Contract royalties
Finite-Lived Intangible Assets [Line Items]
Weighted average life at acquisition (in years)	8 years
Gross carrying amount	$ 1,900
Accumulated amortization	(198)
Net carrying amount	1,702
Contract royalties | Depreciation and Amortization Expense
Finite-Lived Intangible Assets [Line Items]
Amortization of Intangible Assets	198	0	0
Non-competition agreements | Depreciation and Amortization Expense
Finite-Lived Intangible Assets [Line Items]
Amortization of Intangible Assets	$ 0	$ 23	$ 173