Business Segments (Details 2) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Additions to property, plant and equipment:
Property, Plant and Equipment, Additions	$ 2,834	$ 2,734	$ 1,402
Depreciation and amortization:
Depreciation and amortization	7,921	6,974	6,462
Workforce Excellence [Member]
Additions to property, plant and equipment:
Property, Plant and Equipment, Additions	1,321	1,609	685
Depreciation and amortization:
Depreciation and amortization	3,664	2,643	3,116
Business Transformation Services [Member]
Additions to property, plant and equipment:
Property, Plant and Equipment, Additions	625	184	62
Depreciation and amortization:
Depreciation and amortization	2,827	2,770	1,994
Corporate and Other [Member]
Additions to property, plant and equipment:
Property, Plant and Equipment, Additions	888	941	655
Depreciation and amortization:
Depreciation and amortization	$ 1,430	$ 1,561	$ 1,352