Income Taxes (Deferred Tax Assets and Liabilities) (Details) - USD ($) $ in Thousands	Jun. 30, 2021	Jun. 30, 2020
Deferred tax assets derived from:
Allowance for accounts receivable	$ 5,557	$ 6,466
Inventories	5,577	3,226
Nondeductible accrued expenses	8,024	11,109
Net operating loss carryforwards	892	3,083
Tax credits	7,138	6,734
Timing of amortization deduction from goodwill	0	12,516
Deferred compensation	7,893	7,247
Stock compensation	2,977	3,034
Capital loss carryforwards	7,633	0
Timing of amortization deduction from intangible assets	4,880	4,145
Total deferred tax assets	50,571	57,560
Valuation allowance	(13,996)	(9,195)
Total deferred tax assets, net of allowance	36,575	48,365
Deferred tax liabilities derived from:
Timing of depreciation and other deductions from building and equipment	(3,749)	(3,347)
Timing of amortization deduction from goodwill	(582)	(7,390)
Timing of amortization deduction from intangible assets	(14,345)	(16,882)
Total deferred tax liabilities	(18,676)	(27,619)
Net deferred tax assets	$ 17,899	$ 20,746