Note 4: Earnings Per Share: Earnings Per Share, Policy (Details) - shares	3 Months Ended
Jun. 30, 2017	Jun. 30, 2016
Details
Options to purchase shares of common stock outstanding not included in computation of diluted earnings per share because exercise price greater than average market price	114,800	125,150

Represents the Options to purchase shares of common stock outstanding not included in computation of diluted earnings per share because exercise price greater than average market price (number of shares), during the indicated time period.

No definition available.

Name:	fil_OptionsToPurchaseSharesOfCommonStockOutstandingNotIncludedInComputationOfDilutedEarningsPerShareBecauseExercisePriceGreaterThanAverageMarketPrice
Namespace Prefix:	fil_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration