LONG-TERM OBLIGATIONS (Details) (USD $)	3 Months Ended	6 Months Ended
	Jun. 30, 2013	Jun. 30, 2013 item Q	Dec. 31, 2012
LONG-TERM OBLIGATIONS
Total long-term obligations, including current portion	$ 250,325,000	$ 250,325,000	$ 212,439,000
Total current maturities of long-term obligations	9,529,000	9,529,000	9,151,000
Total long-term obligations	240,796,000	240,796,000	203,288,000
De Novo Legal LLC
LONG-TERM OBLIGATIONS
Potential undiscounted amount of all future payments, minimum	0	0
Potential undiscounted amount of all future payments, maximum	29,100,000	29,100,000
Amount of potential contingent consideration recorded	0	0	0
Period over which potential future payments are required to be made		1 year
Jupiter eSources LLC
LONG-TERM OBLIGATIONS
Potential undiscounted amount of all future payments, minimum	0	0
Potential undiscounted amount of all future payments, maximum	10,000,000	10,000,000
Amount of potential contingent consideration recorded	0	0	0
Senior revolving loan
LONG-TERM OBLIGATIONS
Total long-term obligations, including current portion	238,000,000	238,000,000	199,000,000
Weighted average interest rate (as a percent)	3.00%	3.00%
Aggregate amount of funds available	325,000,000	325,000,000
Maximum borrowing capacity subject at the entity's option, subject to compliance with covenants	375,000,000	375,000,000
Number of rate options		2
Average amount of borrowing under the credit facility	234,000,000
Maximum month-end amount outstanding	241,000,000
Remaining amount of borrowing under the credit facility	11,000,000	11,000,000
Number of quarters prior to acquisition for which compliance with covenants is required		4
Senior revolving loan | Minimum
LONG-TERM OBLIGATIONS
Fixed charge coverage ratio, numerator	1.25	1.25
Cash consideration in an acquisition that if in excess, lender permission is required for compliance with debt covenants		125,000,000
Total consideration in an acquisition that if in excess, lender permission is required for compliance with debt covenants		175,000,000
Senior revolving loan | Maximum
LONG-TERM OBLIGATIONS
Leverage ratio, numerator	3.00	3.00
Specified limit of borrowings under capital leases		15,000,000
Specified limit of borrowings under subordinated debt		100,000,000
Maximum amount of total consideration of all acquisitions consummated during the term of the credit facility allowed per the terms of the debt covenants before bank permission is required		300,000,000
Senior revolving loan | Prime rate
LONG-TERM OBLIGATIONS
Variable interest rate basis		Prime rate
Senior revolving loan | Prime rate | Minimum
LONG-TERM OBLIGATIONS
Basis points added to reference rate (as a percent)	0.75%	0.75%
Senior revolving loan | Prime rate | Maximum
LONG-TERM OBLIGATIONS
Basis points added to reference rate (as a percent)	1.75%	1.75%
Senior revolving loan | LIBOR
LONG-TERM OBLIGATIONS
Variable interest rate basis		LIBOR
Senior revolving loan | LIBOR | Minimum
LONG-TERM OBLIGATIONS
Basis points added to reference rate (as a percent)	1.75%	1.75%
Senior revolving loan | LIBOR | Maximum
LONG-TERM OBLIGATIONS
Basis points added to reference rate (as a percent)	2.75%	2.75%
Capital leases
LONG-TERM OBLIGATIONS
Total long-term obligations, including current portion	2,293,000	2,293,000	2,860,000
Total current maturities of long-term obligations	1,547,000	1,547,000	1,640,000
Weighted average interest rate (as a percent)	6.10%	6.10%
Notes payable
LONG-TERM OBLIGATIONS
Total long-term obligations, including current portion	6,085,000	6,085,000	7,080,000
Total current maturities of long-term obligations	4,035,000	4,035,000	4,012,000
Weighted average interest rate (as a percent)	2.20%	2.20%
Interest rate bearing notes payable (as a percent)		2.20%
Acquisition-related liabilities
LONG-TERM OBLIGATIONS
Total long-term obligations, including current portion	3,947,000	3,947,000	3,499,000
Total current maturities of long-term obligations	3,947,000	3,947,000	3,499,000
Weighted average interest rate (as a percent)	3.50%	3.50%
Deferred acquisition price | De Novo Legal LLC
LONG-TERM OBLIGATIONS
Total long-term obligations, including current portion	3,947,000	3,947,000	3,499,000
Total long-term obligations	$ 3,947,000	$ 3,947,000	$ 3,499,000