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Net Sales (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended 12 Months Ended
Jul. 03, 2021
Jun. 27, 2020
Jun. 27, 2020
Jul. 03, 2021
Jul. 03, 2021
Jun. 27, 2020
Jun. 27, 2020
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Disaggregation of Revenue [Line Items]                    
Total net sales $ 109,816 $ 58,017 $ 58,017 $ 191,594 $ 191,594 $ 136,662 $ 136,662      
Bone graft substitutes                    
Disaggregation of Revenue [Line Items]                    
Total net sales $ 20,601   $ 11,181   $ 39,028   $ 25,078      
Bio Ventus LLC [Member]                    
Disaggregation of Revenue [Line Items]                    
Total net sales               $ 321,161 $ 340,141 $ 319,177
Bio Ventus LLC [Member] | OA joint pain treatment and joint preservation                    
Disaggregation of Revenue [Line Items]                    
Total net sales               171,178 182,082 155,576
Bio Ventus LLC [Member] | Minimally invasive fracture treatment                    
Disaggregation of Revenue [Line Items]                    
Total net sales               88,624 103,504 121,032
Bio Ventus LLC [Member] | Bone graft substitutes                    
Disaggregation of Revenue [Line Items]                    
Total net sales               61,359 54,555 42,569
Bio Ventus LLC [Member] | U.S                    
Disaggregation of Revenue [Line Items]                    
Total net sales               293,697 305,072 282,895
Bio Ventus LLC [Member] | International                    
Disaggregation of Revenue [Line Items]                    
Total net sales               $ 27,464 $ 35,069 $ 36,282