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Investments: Available-for-sale Securities (Details) (USD $)
In Thousands, unless otherwise specified
3 Months Ended
Sep. 30, 2013
Sep. 30, 2012
Details    
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Losses $ 5 $ (188)
Realized loss from securities included in beginning balance      
Available-for-sale Securities, Gross Unrealized Gain (Loss) 1 8
Deferred income taxes on unrealized holding (gain) loss    (3)
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Losses $ 6 $ (183)