LONG-TERM OBLIGATIONS (Details) (USD $)			6 Months Ended				0 Months Ended	1 Months Ended	6 Months Ended		3 Months Ended		0 Months Ended	6 Months Ended		0 Months Ended		6 Months Ended	0 Months Ended				3 Months Ended		6 Months Ended	12 Months Ended	1 Months Ended	3 Months Ended	0 Months Ended				6 Months Ended	12 Months Ended	6 Months Ended		6 Months Ended								6 Months Ended
	Jun. 30, 2014	Dec. 31, 2013	Jun. 30, 2014 Interest rate cap	Dec. 31, 2013 Interest rate cap	Jun. 30, 2014 Jupiter eSources LLC	Dec. 31, 2013 Jupiter eSources LLC	Mar. 31, 2014 De Novo Legal LLC	Apr. 30, 2014 De Novo Legal LLC	Jun. 30, 2014 De Novo Legal LLC Fair value adjustment to contingent consideration	Jun. 30, 2014 De Novo Legal LLC Selling, general and administrative expense	Mar. 31, 2014 De Novo Legal LLC Contingent consideration - purchase price consideration	Jun. 30, 2014 De Novo Legal LLC Contingent consideration - purchase price consideration	Apr. 02, 2014 Minus - 10 item	Jun. 30, 2014 Minus - 10	Apr. 01, 2014 Minus - 10	Mar. 26, 2014 Credit Agreement item	Aug. 27, 2013 Credit Agreement item	Jun. 30, 2014 Credit Agreement	Mar. 26, 2014 Credit Agreement LIBOR	Aug. 27, 2013 Senior secured term loan	Jun. 30, 2014 Senior secured term loan	Dec. 31, 2013 Senior secured term loan	Jun. 30, 2014 Senior secured term loan Forward	Jun. 30, 2014 Senior secured term loan Interest rate cap	Jun. 30, 2014 Senior secured term loan Interest rate cap	Dec. 31, 2013 Senior secured term loan Interest rate cap	Apr. 30, 2014 Senior secured term loan Interest rate swap Forward	Jun. 30, 2014 Senior secured term loan Interest rate swap Forward	Mar. 25, 2014 Senior secured term loan Prime rate	Mar. 26, 2014 Senior secured term loan Prime rate	Mar. 25, 2014 Senior secured term loan LIBOR	Mar. 26, 2014 Senior secured term loan LIBOR	Jun. 30, 2014 Senior secured term loan LIBOR	Dec. 31, 2013 Senior secured term loan LIBOR Interest rate cap	Jun. 30, 2014 Senior revolving loan item	Aug. 27, 2013 Senior revolving loan	Jun. 30, 2014 Senior revolving loan Prime rate	Jun. 30, 2014 Senior revolving loan Prime rate Minimum	Jun. 30, 2014 Senior revolving loan Prime rate Maximum	Jun. 30, 2014 Senior revolving loan LIBOR	Jun. 30, 2014 Senior revolving loan LIBOR Minimum	Jun. 30, 2014 Senior revolving loan LIBOR Maximum	Jun. 30, 2014 Capital leases	Dec. 31, 2013 Capital leases	Jun. 30, 2014 Notes payable	Dec. 31, 2013 Notes payable	Jun. 30, 2014 Acquisition-related liabilities	Dec. 31, 2013 Acquisition-related liabilities	Dec. 31, 2013 Contingent consideration De Novo Legal LLC	Jun. 30, 2014 Contingent consideration Minus - 10	Jun. 30, 2014 Deferred acquisition price Minus - 10	Jun. 30, 2014 Letters of credit
LONG-TERM OBLIGATIONS
Total long-term obligations, including current portion	$ 307,002,000	$ 312,457,000																			$ 297,750,000	$ 299,250,000													$ 0								$ 6,167,000	$ 6,548,000	$ 2,049,000	$ 4,079,000	$ 1,036,000	$ 2,580,000		$ 993,000	$ 43,000	$ 1,000,000
Total current maturities of long-term obligations	(8,133,000)	(13,349,000)																			(3,000,000)	(3,000,000)																					(3,084,000)	(3,690,000)	(2,049,000)	(4,079,000)		(2,580,000)	2,580,000
Total Long-term obligations	298,869,000	299,108,000
Weighted average interest rate (as a percent)																					4.25%																						4.00%		2.10%
Aggregate amount of funds available																	400,000,000																			100,000,000
Principal amount of debt issued																				300,000,000
Maximum borrowing capacity subject at the entity's option, subject to compliance with covenants																	600,000,000																			200,000,000
Minimum number of tranches																	1
Number of term loan interest rate options amended																2
Reduction in term loan interest rate (as a percent)																0.50%
Basis points added to reference rate (as a percent)																													2.75%	2.50%	3.75%	3.50%	3.50%					2.00%	3.00%		3.00%	4.00%
Variable interest rate basis																			LIBOR										prime rate	prime rate	one, two, three or six month LIBOR rate	one, two, three or six month LIBOR rate	LIBOR				Prime rate			LIBOR
Interest rate, variable interest rate floor																													2.00%	1.75%	1.00%	0.75%	0.75%
Aggregate floating rate (as a percent)																																	4.25%
Number of rate options																																			2
Term of derivative contract																										2 years
Notional amount																										150,000,000	73,700,000
Strike rate (as a percent)																										3.00%	2.81%
Variable rate basis			1 month LIBOR																								LIBOR with a one-month designated maturity							1 month LIBOR
Changes in fair value of derivative included in accumulated other comprehensive income																												700,000
Cash settlements																							0
Fair value of the interest rate swap, liability																												1,400,000
Value of caplets expired																								0	0
Ineffectiveness gain (loss) recognized in earnings																									0
Fair value of derivative			1,000	27,000
Basis spread on variable rate basis, floor																											0.75%
Payments of the principal amount of debt quarterly																				750,000
Threshold leverage ratio for determination of annual mandatory prepayments																		2.75
Net leverage ratio, maximum																		4.50
Maximum percentage of net income that can be paid as dividends and repurchase securities																		50.00%
Maturity of long-term obligations consisting of senior secured term loan
2014 (July 1 - December 31)																					1,500,000
2015																					3,000,000
2016																					3,000,000
2017																					3,000,000
2018 and thereafter																					287,250,000
Total	307,002,000	312,457,000																			297,750,000	299,250,000													0								6,167,000	6,548,000	2,049,000	4,079,000	1,036,000	2,580,000		993,000	43,000	1,000,000
Interest rate bearing notes payable (as a percent)																																													2.10%
Potential undiscounted amount of all future payments, minimum					0
Potential undiscounted amount of all future payments, maximum					10,000,000
Contingent consideration paid											3,500,000
Amount of potential contingent consideration recorded					0	0						0
Cash payment made to sellers on settlement of dispute								1,500,000
Adjustment to contingent consideration liability							1,500,000		1,100,000	400,000
Amount withheld as security at the acquisition date for potential indemnification claims															43,000
Period for payment of potential indemnification claims													14 months
Number of discrete measurement periods													7
Fair value of contingent consideration obligation														$ 1,000,000	$ 933,000
Contingent consideration liability, discount rate (as a percent)														25.00%