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Note 10: Retirement Plans: 401(k) Plans (Details) - USD ($) | 12 Months Ended
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Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014
Defined Contribution Plan, Description | The Company has three 401(k) savings plans covering all eligible employees, as defined above, which includes employer participation in accordance with the provisions of Section 401(k) of the Internal Revenue Code. The plans allow participants to make pretax contributions up to a maximum of $18,000, $18,000 and $17,500 for the years 2016, 2015 and 2014, respectively or the statutory limits. |  |
Defined Contribution Plan, Maximum Annual Contributions Per Employee, Amount | $ 18,000 | $ 18,000 | $ 17,500
SafeHarborPlanMember |  |  |
Contribution to Retirement Plan | $ 1,429,962 | $ 1,197,236 | $ 899,850

X
- Definition Represents the monetary amount of Contribution to Retirement Plan, during the indicated time period. + References No definition available. + Details
Name: | fil_ContributionToRetirementPlan
Namespace Prefix: | fil_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Maximum amount the employee may contribute to a defined contribution plan. + References No definition available. + Details
Name: | us-gaap_DefinedContributionPlanMaximumAnnualContributionsPerEmployeeAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Description of defined contribution pension and other postretirement plans. Includes, but is not limited to, plan utilized, employee group covered, and employer matching contributions. + References No definition available. + Details
Name: | us-gaap_DescriptionOfDefinedContributionPensionAndOtherPostretirementPlans
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_PlanNameAxis=fil_SafeHarborPlanMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |