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Incentive Plans: Equity Incentive Plan Policy: Schedule of Share-based Compensation, Restricted Stock Units Award Activity (Details) - Restricted Stock [Member] - Equity Incentive Plan [Member] - $ / shares
3 Months Ended 9 Months Ended
Mar. 31, 2018
Mar. 31, 2017
Mar. 31, 2018
Mar. 31, 2017
Shares:        
Unvested, Beginning of Period 109,000   111,000  
Awarded 0 6,000 0 24,000
Vested (10,500) 0 (10,500) (87,750)
Forfeited 0 0 (2,000) (15,250)
Unvested, End of Period 98,500   98,500  
Expected to vest at March 31, 2013 78,800   78,800  
Weighted-Average Award Date Fair Value (in dollars per share):        
Restricted stock, Nonvested, Weighted Average Award Date Fair Value $ 14.45   $ 14.16  
Awarded 0.00   0.00  
Vested 18.50   18.50  
Forfeited 0.00   13.30  
Restricted stock, Nonvested, Weighted Average Award Date Fair Value 14.35   14.35  
Expected to vest at March 31, 2013 $ 14.35   $ 14.35