GOODWILL AND INTANGIBLE ASSETS (Goodwill, Net) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	$ 55,667	$ 20,512	$ 20,977
Accumulated amortization	(7,978)	(6,778)	(4,143)
Net carrying amount	47,689	13,734	16,834
Amortization of Intangible Assets	5,349	2,785	1,024
Customer relationships
Finite-Lived Intangible Assets [Line Items]
Weighted average life at acquisition (in years)	10 years	9 years	9 years
Gross carrying amount	48,482	13,432	13,724
Accumulated amortization	(4,664)	(4,885)	(3,640)
Net carrying amount	43,818	8,547	10,084
Amortization of Intangible Assets	3,843	1,373	627
Trade name
Finite-Lived Intangible Assets [Line Items]
Weighted average life at acquisition (in years)	5 years	5 years	5 years
Gross carrying amount	6,372	6,232	6,372
Accumulated amortization	(2,894)	(1,643)	(439)
Net carrying amount	3,478	4,589	5,933
Amortization of Intangible Assets	1,319	1,222	333
Non-competition agreements
Finite-Lived Intangible Assets [Line Items]
Weighted average life at acquisition (in years)	5 years	5 years	5 years
Gross carrying amount	813	848	881
Accumulated amortization	(420)	(250)	(64)
Net carrying amount	393	598	817
Amortization of Intangible Assets	$ 187	$ 190	$ 64