INTANGIBLE ASSETS (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014
Intangible assets subject to amortization
Gross Amount	$ 41,116		$ 41,603
Accumulated amortization	(9,159)		(8,812)
Net Book Value	31,957		32,791
Amortization expense for intangible assets	662	678
Estimated amortization expense
Remainder of 2015	1,980
2016	2,640
2017	2,640
2018	2,640
2019	2,640
Thereafter	19,417
Net Book Value	31,957		32,791
Customer lists
Intangible assets subject to amortization
Gross Amount	34,139		34,379
Accumulated amortization	(6,179)		(5,801)
Net Book Value	27,960		28,578
Estimated amortization expense
Net Book Value	27,960		28,578
Customer lists | Minimum
Intangible assets subject to amortization
Estimated Life	8 years
Customer lists | Maximum
Intangible assets subject to amortization
Estimated Life	15 years
Trade name
Intangible assets subject to amortization
Gross Amount	4,775		4,775
Accumulated amortization	(1,505)		(1,409)
Net Book Value	3,270		3,366
Estimated Life	10 years
Estimated amortization expense
Net Book Value	3,270		3,366
Design and technologies
Intangible assets subject to amortization
Gross Amount	2,178		2,425
Accumulated amortization	(1,470)		(1,598)
Net Book Value	708		827
Estimated amortization expense
Net Book Value	708		827
Design and technologies | Minimum
Intangible assets subject to amortization
Estimated Life	8 years
Design and technologies | Maximum
Intangible assets subject to amortization
Estimated Life	10 years
Patents
Intangible assets subject to amortization
Gross Amount	24		24
Accumulated amortization	(5)		(4)
Net Book Value	19		20
Estimated amortization expense
Net Book Value	$ 19		$ 20