Segment Reporting (Schedule Of Revenues And Adjusted Segment EBITDA For Reportable Segments) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011
Segment Reporting Information [Line Items]
Revenues	$ 395,228	$ 361,816
Adjusted Segment EBITDA	75,009	70,582
Corporate Finance / Restructuring [Member]
Segment Reporting Information [Line Items]
Revenues	113,478	107,254
Adjusted Segment EBITDA	26,764	17,602
Forensic And Litigation Consulting [Member]
Segment Reporting Information [Line Items]
Revenues	87,031	82,913
Adjusted Segment EBITDA	12,077	15,992
Economic Consulting [Member]
Segment Reporting Information [Line Items]
Revenues	100,052	74,259
Adjusted Segment EBITDA	18,424	13,162
Technology [Member]
Segment Reporting Information [Line Items]
Revenues	49,660	51,035
Adjusted Segment EBITDA	13,215	18,430
Strategic Communications [Member]
Segment Reporting Information [Line Items]
Revenues	45,007	46,355
Adjusted Segment EBITDA	$ 4,529	$ 5,396