Business Segments (Details 1) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Identifiable assets:
Total assets	$ 305,452	$ 280,156
Learning Solutions [Member]
Identifiable assets:
Total assets	174,264	139,744
Professional and Technical Services [Member]
Identifiable assets:
Total assets	63,819	64,292
Sandy Training and Marketing [Member]
Identifiable assets:
Total assets	18,775	21,812
Performance Readiness Solutions [Member]
Identifiable assets:
Total assets	23,186	26,500
Energy Services [Member]
Identifiable assets:
Total assets	$ 25,408	$ 27,808