ACCRUED EXPENSES (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012	Dec. 31, 2012
Accrued expenses [Abstract]
Sales commissions	$ 1,837		$ 1,837		$ 1,295
Subcontracting labor	2,818		2,818		2,408
Salaries, bonuses and related benefits	8,568		8,568		6,023
Litigation reserve	11,550		11,550		11,549
Consideration payable on acquisitions	786		786		0
Other	4,187		4,187		4,085
Accrued expenses	29,746		29,746		25,360
Restructuring Cost and Reserve [Line Items]
Liability at December 31, 2012			122
New Charges	1,263	245	1,387	382
Cash Payments & Other Settlements			(318)
Liability at June 30, 2012	1,191		1,191
Employee Severance [Member]
Restructuring Cost and Reserve [Line Items]
Liability at December 31, 2012			122
New Charges			1,239
Cash Payments & Other Settlements			(170)
Liability at June 30, 2012	1,191		1,191
Other Restructuring [Member]
Restructuring Cost and Reserve [Line Items]
Liability at December 31, 2012			0
New Charges			48
Cash Payments & Other Settlements			(48)
Liability at June 30, 2012	0		0
Transportation of Equipment [Member]
Restructuring Cost and Reserve [Line Items]
Liability at December 31, 2012			0
New Charges			100
Cash Payments & Other Settlements			(100)
Liability at June 30, 2012	$ 0		$ 0