GOODWILL AND OTHER INTANGIBLE ASSETS (Details 2) (USD $)	6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Dec. 31, 2013
Intangible assets
Gross Carrying Amount	$ 93,535,000		$ 85,396,000
Accumulated Amortization	(31,018,000)		(27,375,000)
Net Carrying Amount	62,517,000		58,021,000
Amortization expense	3,800,000	3,300,000
Weighted average life of the additions to customer lists, patents and other intangibles	10 years
Trade Name
Intangible assets
Gross Carrying Amount	11,822,000		10,023,000
Accumulated Amortization	(510,000)		(264,000)
Net Carrying Amount	11,312,000		9,759,000
Trade Name | Minimum
Intangible assets
Amortization period	1 year
Trade Name | Maximum
Intangible assets
Amortization period	5 years
Customer Lists
Intangible assets
Gross Carrying Amount	53,227,000		46,932,000
Accumulated Amortization	(13,841,000)		(11,627,000)
Net Carrying Amount	39,386,000		35,305,000
Customer Lists | Minimum
Intangible assets
Amortization period	10 years
Customer Lists | Maximum
Intangible assets
Amortization period	14 years
Patents and Other Intangibles
Intangible assets
Gross Carrying Amount	28,486,000		28,441,000
Accumulated Amortization	(16,667,000)		(15,484,000)
Net Carrying Amount	$ 11,819,000		$ 12,957,000
Patents
Intangible assets
Amortization period	5 years