Summary of Significant Accounting Policies - Narrative (Details) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2021
Property, Plant and Equipment
Selling expenses	$ 103,151	$ 99,458	$ 88,283
Undiscounted workers' compensation liability	3,300	3,500
Reinsurance recoveries	700	700
Letter of credit posted as security deposit	4,000
Liability for claims and claims adjustment expense	1,400	2,300
Right-of-use operating lease assets	$ 24,593	27,957
Operating Lease, Remaining Contractual Term	7 years
Operating Lease, Extension Term	10 years
Group Medical Insurance Liability	$ 500	500
Percent Of Workforce Covered By Collective Bargaining Agreement	20.00%
Security Deposit - Letter of Credit
Property, Plant and Equipment
Letter of credit posted as security deposit		$ 4,100
Buildings and facilities | Minimum
Property, Plant and Equipment
Property, plant and equipment useful life	10 years
Buildings and facilities | Maximum
Property, Plant and Equipment
Property, plant and equipment useful life	30 years
Machinery and equipment | Minimum
Property, Plant and Equipment
Property, plant and equipment useful life	3 years
Machinery and equipment | Maximum
Property, Plant and Equipment
Property, plant and equipment useful life	15 years
Office furniture and equipment | Minimum
Property, Plant and Equipment
Property, plant and equipment useful life	5 years
Office furniture and equipment | Maximum
Property, Plant and Equipment
Property, plant and equipment useful life	7 years
Capitalized software | Minimum
Property, Plant and Equipment
Property, plant and equipment useful life	3 years
Capitalized software | Maximum
Property, Plant and Equipment
Property, plant and equipment useful life	5 years
Five Customers [Member] | Accounts Receivable Benchmark | Customer Concentration Risk
Property, Plant and Equipment
Concentration risk (percent)	33.00%	35.00%