Reporting Segments Reporting segment asset data (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Assets:
Total assets	$ 289,292	$ 339,097
Enterprise Talent [Member]
Assets:
Total assets	102,770	137,695
Specialty Talent and Technology [Member]
Assets:
Total assets	38,505	40,127
Engineering Solutions [Member]
Assets:
Total assets	93,067	93,810
MRI [Member]
Assets:
Total assets	22,558	23,273
Corporate [Member]
Assets:
Total assets	$ 32,392	$ 44,192