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Incentive Plans Incentive Plans: Equity Incentive Plan Policy: Valuation Assumptions (Details) - Equity Incentive Plans - Employee Stock Option [Member]
12 Months Ended
Jun. 30, 2016
Jun. 30, 2015
Jun. 30, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Expected volatility 0.00% 53.70% 55.10%
Weighted-average volatility 0.00% 53.70% 55.10%
Expected dividend yield 0.00% 3.00% 2.60%
Expected term 0 years 7 years 2 months 12 days 7 years 8 months 8 days
Risk-free interest rate 0.00% 2.20% 2.30%