Business Segments (Details 1) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Identifiable assets:
Total assets	$ 434,738	$ 365,007
Workforce Excellence [Member]
Identifiable assets:
Total assets	283,039	241,277
Business Transformation Services [Member]
Identifiable assets:
Total assets	$ 151,699	$ 123,730