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Special Charges and Other - Components (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2021
Sep. 30, 2021
Non-cash related special charges    
Right-of-use assets $ 1,558 $ 2,821
Fixed assets 489 448
Total non-cash related special charges 2,047 3,269
Cash related special charges    
Restructuring charges (133) (250)
Total special charges 1,914 3,019
Employee severance and termination benefits    
Cash related special charges    
Restructuring charges (357) (557)
Lease shutdown costs    
Cash related special charges    
Restructuring charges $ 224 $ 307