Earnings Per Common Share: Options to Purchase Shares of Common Stock (Details) - shares	12 Months Ended
Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
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	108,450	117,600	500

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