Business Segments (Details 2) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Property, Plant and Equipment, Additions	$ 2,536	$ 3,975	$ 1,531
Depreciation and amortization	7,971	6,187	4,230
Learning Solutions [Member]
Property, Plant and Equipment, Additions	1,004	1,116	380
Depreciation and amortization	3,794	2,695	1,824
Professional and Technical Services [Member]
Property, Plant and Equipment, Additions	299	1,068	336
Depreciation and amortization	439	294	327
Sandy Training and Marketing [Member]
Property, Plant and Equipment, Additions	38	6	9
Depreciation and amortization	428	424	478
Energy Services [Member]
Property, Plant and Equipment, Additions	203	48	31
Depreciation and amortization	357	353	386
Corporate and Other [Member]
Property, Plant and Equipment, Additions	931	1,576	775
Depreciation and amortization	1,851	1,550	1,215
Performance Readiness Group [Member]
Property, Plant and Equipment, Additions	61	161	0
Depreciation and amortization	$ 1,102	$ 871	$ 0