Business Segments (Details 1) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Identifiable assets:
Total assets	$ 315,601	$ 302,969
Learning Solutions [Member]
Identifiable assets:
Total assets	147,595	140,500
Professional and Technical Services [Member]
Identifiable assets:
Total assets	80,033	81,183
Sandy Training and Marketing [Member]
Identifiable assets:
Total assets	25,804	25,769
Performance Readiness Solutions [Member]
Identifiable assets:
Total assets	$ 62,169	$ 55,517