GOODWILL AND OTHER INTANGIBLE ASSETS (Details 2) (USD $)	6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Dec. 31, 2012
Finite intangible assets
Accumulated Amortization	$ (23,974,000)		$ (20,643,000)
Intangible assets
Gross Carrying Amount	85,236,000		84,924,000
Net Carrying Amount	61,262,000		64,281,000
Amortization expense	3,300,000	2,500,000
Weighted average life of the additions to customer lists, patents and other intangibles	7 years 8 months 12 days
Trade Name
Indefinite lived intangible assets
Carrying Amount	9,895,000		9,070,000
Customer Lists
Finite intangible assets
Gross Carrying Amount	47,252,000		48,044,000
Accumulated Amortization	(9,760,000)		(7,846,000)
Net Carrying Amount	37,492,000		40,198,000
Customer Lists | Minimum
Intangible assets
Amortization period	10 years
Customer Lists | Maximum
Intangible assets
Amortization period	14 years
Patents and Other Intangibles
Finite intangible assets
Accumulated Amortization	(14,214,000)		(12,797,000)
Intangible assets
Gross Carrying Amount	28,089,000		27,810,000
Net Carrying Amount	$ 13,875,000		$ 15,013,000
Patents
Intangible assets
Amortization period	5 years