Earnings per share - Computation of Basic and Diluted Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	2 Months Ended		3 Months Ended
	Apr. 03, 2021	Feb. 15, 2021	Apr. 02, 2022		Apr. 03, 2021
Numerator:
Net loss	$ (1,449)	$ 25,977	$ (14,806)		$ 24,528
Net loss attributable to noncontrolling interests	408		3,529		408
Net (loss) income attributable to Bioventus Inc.	$ (1,041)		$ (11,277)		$ 24,936
Denominator:
Weighted-average shares of Class A common stock outstanding - basic (in shares)	41,797,882		60,484,969	[1]	41,797,882	[1]
Weighted-average shares of Class A common stock outstanding - diluted (in shares)	41,797,882		60,484,969	[1]	41,797,882	[1]
Net loss per share of Class A common stock, basic (in dollars per share)	$ (0.02)		$ (0.19)	[1]	$ (0.02)	[1]
Net loss per share of Class A common stock, diluted (in dollars per share)	$ (0.02)		$ (0.19)	[1]	$ (0.02)	[1]

[1] (1) Per share information for the three months ended April 2, 2021 represents loss per share of Class A common stock and weighted-average shares of Class A common stock outstanding from February 16, 2021 through October 2, 2021, the period following Bioventus Inc.'s initial public offering and related transactions described in Note 1. Organization and Note 8. Earnings per share within the Notes to the unaudited condensed consolidated financial statements.