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Financial Instruments Measured At Fair Value (Narrative) (Details) - USD ($)
3 Months Ended 9 Months Ended
Mar. 31, 2020
Mar. 31, 2019
Mar. 31, 2020
Mar. 31, 2019
Jun. 30, 2019
Derivative Instruments and Hedging Activities Disclosures [Line Items]          
Number of foreign exchange hedges discontinued $ 0 $ 0 $ 0 $ 0  
Cash Flow Hedging [Member]          
Derivative Instruments and Hedging Activities Disclosures [Line Items]          
Notional amount 6,051,000   6,051,000   $ 2,275,000
Fair value amounts of derivative contracts, net assets 257,000   257,000   83,000
Fair Value Hedging [Member] | Not Designated as Hedging Instrument [Member]          
Derivative Instruments and Hedging Activities Disclosures [Line Items]          
Notional amount 45,768,000   45,768,000   41,845,000
Fair value amounts of derivative contracts, net assets $ 613,000   $ 613,000   $ 440,000
Yeo Hiap Seng Limited [Member]          
Derivative Instruments and Hedging Activities Disclosures [Line Items]          
Ownership percentage, less than 1.00%   1.00%