GOODWILL AND INTANGIBLE ASSETS (Details) (USD $)	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011	Dec. 31, 2011
Goodwill And Intangible Assets [Abstract]
Range of estimated goodwill impairment, lower range	$ 12,000,000
Range of estimated goodwill impairment, upper range	212,000,000
Goodwill	199,805,000		199,805,000		211,805,000
Goodwill Impairment	12,000,000	0	12,000,000	0
Impairment of goodwill	12,000,000	0	12,000,000	0
Finite-Lived Intangible Assets [Line Items]
Weighted average amortization life			7 years 3 months 18 days		7 years
Cost	25,400,000		25,400,000		26,800,000
Accumulated amortization	(8,721,000)		(8,721,000)		(8,059,000)
Net	16,679,000		16,679,000		18,741,000
Writeoff of non compete agreements			1,400,000
Amortization of intangible assets	1,031,000	374,000	2,062,000	748,000
Remainder of 2012	2,062,000		2,062,000
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	(2,470,000)		(2,470,000)		(1,214,000)
Net	12,130,000		12,130,000		13,386,000
Customer Backlog [Member]
Finite-Lived Intangible Assets [Line Items]
Weighted average amortization life			6 months 60 days		6 months 60 days
Cost	6,700,000		6,700,000		6,700,000
Accumulated amortization	(2,452,000)		(2,452,000)		(1,943,000)
Net	4,248,000		4,248,000		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	(3,401,000)		(3,401,000)		(3,307,000)
Net	99,000		99,000		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	(398,000)		(398,000)		(195,000)
Net	202,000		202,000		405,000
Non-competitioin agreements [Member]
Finite-Lived Intangible Assets [Line Items]
Weighted average amortization life					3 years
Cost					1,400,000
Accumulated amortization					(1,400,000)
Net					$ 0