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Segment Information (Details)
$ in Thousands
3 Months Ended
Mar. 31, 2017
USD ($)
Segment
Mar. 31, 2016
USD ($)
Segment Reporting, Disclosure of Entity's Reportable Segments [Abstract]    
Number of reportable business segments | Segment 2  
Segment Reporting Information, Profit (Loss) [Abstract]    
Total revenue $ 16,342 $ 12,976
Change in fair value of contingent consideration, net (254) 69
Operating income (loss) (57) 215
Interest income, net 27 27
(Loss) gain on derivative instruments, net (160) (118)
Other income (expense), net (3) 102
Income (loss) before income taxes $ (193) 226
Minimum [Member]    
Segment Reporting, Disclosure of Entity's Reportable Segments [Abstract]    
Contract term 9 months  
Maximum [Member]    
Segment Reporting, Disclosure of Entity's Reportable Segments [Abstract]    
Contract term 24 months  
Performance Improvement Solutions [Member]    
Segment Reporting Information, Profit (Loss) [Abstract]    
Total revenue $ 9,670 8,843
Operating income (loss) (738) (42)
Nuclear Industry Training and Consulting [Member]    
Segment Reporting Information, Profit (Loss) [Abstract]    
Total revenue 6,672 4,133
Operating income (loss) $ 935 $ 188