Segments - Goodwill (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Goodwill
Beginning of year	$ 54,363
End of year	54,148	$ 54,363
Operating segments
Goodwill
Beginning of year	54,363	54,119
Foreign currency translation adjustments	(215)	244
End of year	54,148	54,363
Operating segments | Biopharmaceuticals
Goodwill
Beginning of year	17,693	17,449
Foreign currency translation adjustments	(215)	244
End of year	17,478	17,693
Operating segments | Exemplar
Goodwill
Beginning of year	20,076	20,076
Foreign currency translation adjustments	0	0
End of year	20,076	20,076
Operating segments | Trans Ova
Goodwill
Beginning of year	16,594	16,594
Foreign currency translation adjustments	0	0
End of year	$ 16,594	$ 16,594