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11) Retirement Plans: 401(k) Plans (Details) - USD ($) | 12 Months Ended
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Dec. 31, 2018 | Dec. 31, 2017
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 $18,500 and $18,000 for the years 2018 and 2017, respectively or the statutory limits. |
Defined Contribution Plan, Maximum Annual Contributions Per Employee, Amount | $ 18,500 | $ 18,000
Benefit plans funded with treasury stock | 1,480,913 | 1,534,861
Safe Harbor Plan |  |
Benefit plans funded with treasury stock | $ 1,480,913 | $ 1,534,861

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- Definition Maximum amount the employee may contribute to a defined contribution plan. + References No definition available. + Details
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- 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
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- Definition The increase (decrease) during the reporting period in the aggregate amount of obligations related to services received from employees, such as accrued salaries and bonuses, payroll taxes and fringe benefits. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3602-108585 + Details
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- Details
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