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Special Charges By Segment (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended	12 Months Ended
	Mar. 31, 2013	Dec. 31, 2012
Special Charges [Line Items]
Special charges	$ 427	$ 29,600
Corporate Finance / Restructuring
Special Charges [Line Items]
Special charges	68
Forensic and Litigation Consulting
Special Charges [Line Items]
Special charges	173
Economic Consulting
Special Charges [Line Items]
Special charges	(4)
Technology
Special Charges [Line Items]
Special charges	14
Strategic Communications
Special Charges [Line Items]
Special charges	64
Total Reportable Segments
Special Charges [Line Items]
Special charges	315
Unallocated Corporate
Special Charges [Line Items]
Special charges	$ 112

X

- Definition

The charge against earnings in the period, comprised of costs associated with non-recurring activities related to our global branding strategy and other strategic branding decisions, a realignment of our workforce and consolidation of office locations.

+ References

No definition available.

+ Details

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Balance Type:	debit
Period Type:	duration

X

- Details

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