Incentive Plans: Equity Incentive Plan Policy: Schedule of Incentive Plan Stock Option Activity (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2017
Shares:
Oustanding, End of Period	585,500	903,000	585,500
Equity Incentive Plan [Member]
Shares:
Outstanding, Beginning of Period	591,250		615,250
Granted	0		0
Exercised	(5,750)		(27,250)
Forfeited	0		(2,500)
Oustanding, End of Period	585,500		585,500
Vested and expected to vest at year end	545,350		545,350
Exercisable at year end	384,750		384,750
Weighted-Average Exercise Price (in dollars per share):
Oustanding, Beginning of Period	$ 12.27		$ 12.14
Granted	0.00		0.00
Exercised	14.59		9.57
Forfeited	0.00		14.59
Outstanding, End of Period	12.25		12.25
Vested and expected to vest at year end	12.03		12.03
Exercisable at year end	$ 10.67		$ 10.67
Weighted- Average Remaining Contractual Term (Years):
Outstanding at year end	5 years 3 months 15 days		5 years 3 months 15 days
Vested and expected to vest at year end	5 years 2 months		5 years 2 months
Exercisable at year end	4 years 4 months 27 days		4 years 4 months 27 days
Aggregate Intrinsic Value ($000):
Outstanding at year end	$ 3,633		$ 3,633
Vested and expected to vest at year end	3,501		3,501
Exercisable at year end	$ 2,973		$ 2,973