ACQUISITIONS (Details) (USD $)	12 Months Ended		3 Months Ended	12 Months Ended							12 Months Ended			12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Sep. 30, 2013 De Novo Legal LLC	Dec. 31, 2013 De Novo Legal LLC	Dec. 31, 2012 De Novo Legal LLC item	Dec. 31, 2011 De Novo Legal LLC	Dec. 31, 2013 De Novo Legal LLC Selling, general and administrative expense	Dec. 31, 2013 De Novo Legal LLC Contingent consideration - purchase price consideration	Dec. 31, 2012 De Novo Legal LLC Contingent consideration - purchase price consideration	Dec. 28, 2011 De Novo Legal LLC Contingent consideration - purchase price consideration	Dec. 31, 2012 De Novo Legal LLC Contingent consideration - continued employment	Dec. 31, 2013 De Novo Legal LLC Current maturities of long-term obligations	Dec. 31, 2012 De Novo Legal LLC Current maturities of long-term obligations	Dec. 31, 2011 Encore Discovery Solutions	Dec. 31, 2013 Jupiter eSources LLC	Dec. 31, 2012 Jupiter eSources LLC	Oct. 01, 2010 Jupiter eSources LLC	Oct. 01, 2010 Jupiter eSources LLC Contingent consideration - purchase price consideration
Acquisitions
Deferred purchase price paid			$ 3,100,000
Holdback amount recorded in long-term obligations													3,500,000
Potential undiscounted amount of all future payments, minimum				0						0					0			0
Potential undiscounted amount of all future payments, maximum				29,100,000						29,100,000					10,000,000			10,000,000
Adjustment to contingent consideration liability				3,400,000			800,000	2,600,000	(17,200,000)		(3,400,000)	2,600,000
Number of employees whose employment ended					1
Compensation expense related to portion of the contingent consideration tied to employment reflected in general and administrative expense					0
Change in fair value accretion expense included in interest expense									1,100,000
Transaction related costs	(200,000)	7,681,000				3,500,000								3,900,000
Operating revenue														42,200,000
Operating income														8,300,000
Amount withheld as security at the acquisition date for potential indemnification claims																	8,400,000
Liability recorded related to contingent consideration															0	0
Pro forma financial information
Total revenue		356,954,000
Operating revenue		334,893,000
Net income		$ 22,759,000