Business Segments - Segments in Significant Accounting Policies (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Mar. 31, 2021	Mar. 31, 2020	Jun. 30, 2020
Segment Reporting Information
Net sales	$ 211,729	$ 210,739	$ 613,072	$ 614,471
Depreciation and amortization	7,918	8,248	24,042	24,177
Reconciliation of income before income taxes to Adjusted EBITDA
Income before income taxes	17,782	18,664	50,343	39,131
Interest expense, net	2,933	3,263	8,957	10,049
Depreciation and amortization	7,918	8,248	24,042	24,177
Stock-based compensation			1,129	1,694
Foreign currency (gains) losses, net	(583)	(608)	(3,590)	1,895
Identifiable assets	805,017		805,017		$ 784,100
Animal Health
Segment Reporting Information
Net sales	134,380	138,974	398,987	404,513
Mineral Nutrition
Segment Reporting Information
Net sales	58,153	56,200	163,750	164,534
Performance Products
Segment Reporting Information
Net sales	19,196	15,565	50,335	45,424
Operating Segments
Segment Reporting Information
Net sales	211,729	210,739	613,072	614,471
Depreciation and amortization	7,519	7,803	22,802	22,934
Adjusted EBITDA - Total segments	39,123	40,196	114,043	108,563
Reconciliation of income before income taxes to Adjusted EBITDA
Income before income taxes	17,782	18,664	50,343	39,131
Interest expense, net	2,933	3,263	8,957	10,049
Depreciation and amortization	7,519	7,803	22,802	22,934
Restructuring costs	11,073	10,064	33,162	30,283
Stock-based compensation		565	1,129	1,694
Acquisition-related costs of goods sold		0		280
Acquisition-related transaction costs		0		462
Acquisition-related other		0		167
Foreign currency (gains) losses, net	(583)	(608)	(3,590)	1,895
Adjusted EBITDA - Total segments	39,123	40,196	114,043	108,563
Identifiable assets	671,518		671,518		657,365
Operating Segments | Animal Health
Segment Reporting Information
Net sales	134,380	138,974	398,987	404,513
Depreciation and amortization	6,457	6,665	19,476	19,760
Adjusted EBITDA - Total segments	30,962	34,635	94,412	93,534
Reconciliation of income before income taxes to Adjusted EBITDA
Depreciation and amortization	6,457	6,665	19,476	19,760
Adjusted EBITDA - Total segments	30,962	34,635	94,412	93,534
Identifiable assets	565,958		565,958		560,663
Operating Segments | Mineral Nutrition
Segment Reporting Information
Net sales	58,153	56,200	163,750	164,534
Depreciation and amortization	646	629	2,042	1,871
Adjusted EBITDA - Total segments	5,232	4,055	12,464	11,214
Reconciliation of income before income taxes to Adjusted EBITDA
Depreciation and amortization	646	629	2,042	1,871
Adjusted EBITDA - Total segments	5,232	4,055	12,464	11,214
Identifiable assets	70,269		70,269		65,686
Operating Segments | Performance Products
Segment Reporting Information
Net sales	19,196	15,565	50,335	45,424
Depreciation and amortization	416	509	1,284	1,303
Adjusted EBITDA - Total segments	2,929	1,506	7,167	3,815
Reconciliation of income before income taxes to Adjusted EBITDA
Depreciation and amortization	416	509	1,284	1,303
Adjusted EBITDA - Total segments	2,929	1,506	7,167	3,815
Identifiable assets	35,291		35,291		31,016
Corporate
Segment Reporting Information
Depreciation and amortization	399	445	1,240	1,243
Reconciliation of income before income taxes to Adjusted EBITDA
Depreciation and amortization	399	445	1,240	1,243
Corporate costs		$ 0		$ 425
Identifiable assets	$ 133,499		$ 133,499		$ 126,735