Segment Information (Total Assets By Segment) (Details) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	$ 1,065,040	$ 1,054,797
Healthcare [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	391,654	391,859
Energy [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	121,148	120,311
Financial Services Advisory and Compliance [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	98,973	98,846
Disputes, Forensics & Legal Technology [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	333,136	330,239
Unallocated Assets [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	$ 120,129	$ 113,542