GOODWILL AND OTHER INTANGIBLE ASSETS (Details 2) (USD $)	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012	Dec. 31, 2012
Finite intangible assets
Accumulated Amortization	$ (22,312,000)		$ (20,643,000)
Intangible assets
Gross Carrying Amount	84,973,000		84,924,000
Accumulated Amortization	(22,312,000)		(20,643,000)
Net Carrying Amount	62,661,000		64,281,000
Amortization expense	(1,700,000)	(2,800,000)
Trade Name
Indefinite lived intangible assets
Carrying Amount	9,070,000		9,070,000
Customer Lists
Finite intangible assets
Gross Carrying Amount	48,044,000		48,044,000
Accumulated Amortization	(8,872,000)		(7,846,000)
Net Carrying Amount	39,172,000		40,198,000
Intangible assets
Accumulated Amortization	(8,872,000)		(7,846,000)
Estimated aggregate amortization expense for definite-lived intangible assets
Net Carrying Amount	39,172,000		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	(13,440,000)		(12,797,000)
Intangible assets
Gross Carrying Amount	27,859,000		27,810,000
Accumulated Amortization	(13,440,000)		(12,797,000)
Net Carrying Amount	$ 14,419,000		$ 15,013,000
Amortization period	5 years