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Business Segments (Details)
$ in Thousands
3 Months Ended
Mar. 31, 2020
USD ($)
segment
reporting_unit
practice_area
Mar. 31, 2019
USD ($)
Segment Reporting [Abstract]    
Number of reportable business segments | segment 2  
Segment Reporting Information [Line Items]    
Revenue $ 128,281 $ 139,473
Gross Profit 17,614 21,278
General and administrative expenses 17,284 16,127
Sales and marketing expenses 1,839 1,989
Restructuring charges 0 1,119
Gain on change in fair value of contingent consideration, net 0 50
Operating income (445) 2,093
Other income (expense) 500 14
Income before income tax expense $ (1,923) 481
Number of reporting units | reporting_unit 4  
Number of practice areas | practice_area 4  
Gain on sale of business $ 1,064 0
Workforce Excellence [Member]    
Segment Reporting Information [Line Items]    
Revenue 74,378 81,478
Gross Profit $ 11,493 13,455
Number of practice areas | practice_area 2  
Business Transformation Services [Member]    
Segment Reporting Information [Line Items]    
Revenue $ 53,903 57,995
Gross Profit $ 6,121 7,823
Number of practice areas | practice_area 2  
Operating Segments    
Segment Reporting Information [Line Items]    
Revenue $ 128,281 139,473
Operating Segments | Workforce Excellence [Member]    
Segment Reporting Information [Line Items]    
Revenue 74,378 81,478
Operating Segments | Business Transformation Services [Member]    
Segment Reporting Information [Line Items]    
Revenue $ 53,903 $ 57,995