Fair Value Measurements (Narratives) (Details) - USD ($)	3 Months Ended		6 Months Ended		12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2023	Dec. 31, 2022	Jun. 30, 2023
Not Designated as Hedging Instrument | Forward Foreign Currency Contracts
Assets/Liabilities
Notional principal amount of forward foreign exchange contracts	$ 15,600,000		$ 15,600,000		$ 3,400,000
Maximum maturities for contracts			40 days		40 days
Gains (losses) on foreign currency derivative instruments	400,000	$ 100,000	$ 300,000	$ (400,000)
Designated as Hedging Instrument | Forward Foreign Currency Contracts
Assets/Liabilities
Unrealized gain (loss) on derivatives			0		$ 0
Level 2 Assets and Liabilities
Assets/Liabilities
Long-term debt, fair value	195,000,000		195,000,000		225,000,000
Transfers of assets between Level 1 and Level 2	0	0	0	0
Transfers of liabilities between Level 1 and Level 2	0	0	0	0
Level 3 Assets and Liabilities
Assets/Liabilities
Fair value, measurement level 3 assets, transfers			0		0
Fair value, measurement level 3 liabilities transfers			0		0
Transfers of assets between Level 2 and Level 3	0	0	0	0
Transfers of liabilities between Level 2 and Level 3	0	0	0	0
Fair value assets impairment	0	$ 0	0	$ 0
Recurring
Assets/Liabilities
Certificate of deposits	9,877,000		9,877,000		7,151,000
Recurring | Level 2 Assets and Liabilities
Assets/Liabilities
Certificate of deposits	$ 9,877,000		$ 9,877,000		$ 7,151,000