Earnings per Share - Reconciliation (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Numerator:
Net income	$ 4,678	$ 4,034	$ 7,838	$ 6,420
Less: net income attributable to non-controlling interests	46	8	75	361
Net income attributable to PetIQ, Inc.	$ 4,632	$ 4,026	$ 7,763	$ 6,059
Denominator:
Weighted-average shares of Class A common stock outstanding -- basic (in shares)	29,283	28,491	29,223	27,444
Weighted-average shares of Class A common stock outstanding - diluted (in shares)	29,329	29,156	29,304	28,059
Earnings Per Share
Loss per share of Class A common stock - basic (in dollars per share)	$ 0.16	$ 0.14	$ 0.27	$ 0.22
Loss per share of Class A common stock - diluted (in dollars per share)	$ 0.16	$ 0.14	$ 0.26	$ 0.22
Stock options
Denominator:
Dilutive effect of share-based payment arrangements (in shares)	32	518	47	470
RSU
Denominator:
Dilutive effect of share-based payment arrangements (in shares)	14	147	34	145