GOODWILL AND INTANGIBLE ASSETS (Details) (USD $)	3 Months Ended			9 Months Ended		12 Months Ended
	Sep. 30, 2012	Jun. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011	Dec. 31, 2011
Goodwill And Intangible Assets [Abstract]
Goodwill	$ 163,205,000			$ 163,205,000		$ 211,805,000
Goodwill Impairment	36,600,000	12,000,000	0	48,600,000	0
Impairment of goodwill	36,600,000	12,000,000	0	48,600,000	0
Finite-Lived Intangible Assets [Line Items]
Weighted average amortization life				7 years 3 months 18 days		7 years 0 months 0 days
Cost	25,400,000			25,400,000		26,800,000
Accumulated amortization	(9,752,000)			(9,752,000)		(8,059,000)
Net	15,648,000			15,648,000		18,741,000
Writeoff of non compete agreements				1,400,000
Amortization of intangible assets	1,031,000		1,553,000	3,093,000	2,301,000
Remainder of 2012	1,031,000			1,031,000
Amortization expense 2013	3,722,000			3,722,000
Amortization expense 2014	3,663,000			3,663,000
Amortization expense 2015	2,887,000			2,887,000
Amortization expense 2016	2,139,000			2,139,000
Finite-Lived Intangible Assets, Amortization Expense, after Year Five	2,206,000			2,206,000
Customer Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Weighted average amortization life				8 years 3 months 18 days		8 years 3 months 18 days
Cost	14,600,000			14,600,000		14,600,000
Accumulated amortization	(3,099,000)			(3,099,000)		(1,214,000)
Net	11,501,000			11,501,000		13,386,000
Customer Backlog [Member]
Finite-Lived Intangible Assets [Line Items]
Weighted average amortization life				6 years 6 months 0 days		6 years 6 months 0 days
Cost	6,700,000			6,700,000		6,700,000
Accumulated amortization	(2,707,000)			(2,707,000)		(1,943,000)
Net	3,993,000			3,993,000		4,757,000
Customer Contracts [Member]
Finite-Lived Intangible Assets [Line Items]
Weighted average amortization life				5 years 4 months 24 days		5 years 4 months 24 days
Cost	3,500,000			3,500,000		3,500,000
Accumulated amortization	(3,447,000)			(3,447,000)		(3,307,000)
Net	53,000			53,000		193,000
Trade Names [Member]
Finite-Lived Intangible Assets [Line Items]
Weighted average amortization life				1 year 6 months 0 days		1 year 6 months 0 days
Cost	600,000			600,000		600,000
Accumulated amortization	(499,000)			(499,000)		(195,000)
Net	101,000			101,000		405,000
Non-competitioin agreements [Member]
Finite-Lived Intangible Assets [Line Items]
Weighted average amortization life						3 years 0 months 0 days
Cost						1,400,000
Accumulated amortization						(1,400,000)
Net						$ 0