Principal Business Activity and Significant Accounting Policies - Narrative (Details) distributionCenter in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2023 USD ($) location distributionCenter segment state	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)
Accounting Policies [Abstract]
Number of points of distribution (more than) | distributionCenter	60
Number of retail pharmacy locations (over) | location	2,600
Number of states in which the entity provides veterinary services to pet owners | state	39
Number of reportable segments | segment	2
Other current asset held-for-sale	$ 4,200
Other accrued expenses held-for-sale	1,200
Impairment and other asset charges	$ 7,680	$ 47,264	$ 0