Goodwill and Other Intangible Assets (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Dec. 31, 2015
Goodwill [Roll Forward]
Gross Balance	$ 108,041
Accumulated Impairment Loss	(62,676)	$ (62,247)
Additions	0
Goodwill, Impairment Loss	21,000
Translation and Other Adjustments	(57)
Gross Balance	108,413
Accumulated Impairment Loss	(62,676)	(62,247)
Engineering Solutions [Member]
Goodwill [Roll Forward]
Gross Balance	35,713
Accumulated Impairment Loss	(21,431)	(21,431)
Additions	0
Goodwill, Impairment Loss	10,400
Translation and Other Adjustments	0
Gross Balance	35,713
Accumulated Impairment Loss	(21,431)	(21,431)
Specialty Talent and Technology [Member]
Goodwill [Roll Forward]
Gross Balance	16,445
Accumulated Impairment Loss	0	0
Additions	0
Translation and Other Adjustments	0
Gross Balance	16,445
Accumulated Impairment Loss	0	0
Enterprise Talent Solutions [Member]
Goodwill [Roll Forward]
Gross Balance	40,134
Accumulated Impairment Loss	(35,101)	(34,511)
Additions	0
Goodwill, Impairment Loss	10,700
Translation and Other Adjustments	0
Gross Balance	40,724
Accumulated Impairment Loss	(35,101)	(34,511)
MRI [Member]
Goodwill [Roll Forward]
Gross Balance	15,749
Accumulated Impairment Loss	(6,144)	(6,305)
Additions	0
Translation and Other Adjustments	(57)
Gross Balance	15,531
Accumulated Impairment Loss	$ (6,144)	$ (6,305)