LONG-TERM OBLIGATIONS (Details) (USD $)				3 Months Ended		3 Months Ended					3 Months Ended					3 Months Ended				0 Months Ended
	Mar. 31, 2013	Dec. 31, 2012	Dec. 31, 2012 De Novo Legal LLC	Mar. 31, 2013 Senior revolving loan quarter item	Dec. 31, 2012 Senior revolving loan	Mar. 31, 2013 Senior revolving loan Minimum	Mar. 31, 2013 Senior revolving loan Maximum	Mar. 31, 2013 Senior revolving loan Prime rate	Mar. 31, 2013 Senior revolving loan Prime rate Minimum	Mar. 31, 2013 Senior revolving loan Prime rate Maximum	Mar. 31, 2013 Senior revolving loan LIBOR	Mar. 31, 2013 Senior revolving loan LIBOR Minimum	Mar. 31, 2013 Senior revolving loan LIBOR Maximum	Mar. 31, 2013 Capital leases	Dec. 31, 2012 Capital leases	Mar. 31, 2013 Notes payable	Dec. 31, 2012 Notes payable	Mar. 31, 2013 Acquisition-related liabilities	Dec. 31, 2012 Acquisition-related liabilities	Dec. 28, 2011 Contingent consideration De Novo Legal LLC	Mar. 31, 2013 Deferred acquisition price De Novo Legal LLC	Dec. 31, 2012 Deferred acquisition price De Novo Legal LLC
LONG-TERM OBLIGATIONS
Total long-term obligations, including current portion	$ 227,336,000	$ 212,439,000		$ 214,000,000	$ 199,000,000									$ 2,722,000	$ 2,860,000	$ 7,080,000	$ 7,080,000	$ 3,534,000	$ 3,499,000		$ 3,534,000	$ 3,499,000
Total current maturities of long-term obligations	(9,142,000)	(9,151,000)												(1,596,000)	(1,640,000)	(4,012,000)	(4,012,000)	(3,534,000)	(3,499,000)
Total Long-term obligations	218,194,000	203,288,000																			3,534,000	3,499,000
Weighted average interest rate (as a percent)				3.10%										6.20%		2.20%		3.50%
Aggregate amount of funds available				325,000,000
Maximum borrowing capacity subject at the entity's option, subject to compliance with covenants				375,000,000
Number of rate options				2
Variable interest rate basis								Prime rate			LIBOR
Basis points added to reference rate (as a percent)									0.75%	1.75%		1.75%	2.75%
Average amount of borrowing under the credit facility				199,700,000
Weighted average interest rate for the average amount of borrowings (as a percent)				3.10%
Maximum month-end amount outstanding				214,000,000	199,000,000
Leverage ratio, numerator							3.00
Fixed charge coverage ratio, numerator						1.25
Remaining amount of borrowing under the credit facility				43,900,000
Specified limit of borrowings under capital leases							15,000,000
Specified limit of borrowings under subordinated debt							100,000,000
Number of quarters prior to acquisition for which compliance with covenants is required				4
Cash consideration in an acquisition that if in excess, bank permission is required for compliance with debt covenants						125,000,000
Total consideration in an acquisition that if in excess, bank permission is required for compliance with debt covenants						175,000,000
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
Interest rate bearing notes payable (as a percent)																2.20%
Period over which potential future payments are required to be made																				2 years
Amount of potential contingent consideration recorded			$ 0