Incentive Plans: Equity Incentive Plan Policy - Schedule of Incentive Plan Stock Option Activity (Details) - Equity Incentive Plans - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Jun. 30, 2019	Jun. 30, 2018
Shares:
Outstanding, Beginning of Period	529,000	615,250
Granted	90,000	0
Exercised	(48,250)	(83,750)
Forfeited	0	(2,500)
Oustanding, End of Period	570,750	529,000
Vested and expected to vest at year end	550,150	490,850
Exercisable at year end	467,750	338,250
Weighted-Average Exercise Price (in dollars per share):
Oustanding, Beginning of Period	$ 12.77	$ 12.14
Granted	20.19	0
Exercised	11.45	8.08
Forfeited	0	14.59
Outstanding, End of Period	14.05	12.77
Vested and expected to vest at year end	13.82	12.57
Exercisable at year end	$ 12.72	$ 11.36
Weighted- Average Remaining Contractual Term (Years):
Outstanding at year end	5 years 2 months 16 days	5 years 3 months 7 days
Vested and expected to vest at year end	5 years 18 days	5 years 2 months 1 day
Exercisable at year end	4 years 3 months	4 years 6 months 18 days
Aggregate Intrinsic Value ($000):
Outstanding at year end	$ 3,960	$ 3,353
Vested and expected to vest at year end	3,942	3,204
Exercisable at year end	$ 3,870	$ 2,612