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11) Retirement Plans: 401(k) Plans (Details) - USD ($) | 12 Months Ended
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Dec. 31, 2019 | Dec. 31, 2018
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 $19,000 and $18,500 for the years 2019 and 2018, respectively or the statutory limits. |
Defined Contribution Plan, Maximum Annual Contributions Per Employee, Amount | $ 19,000 | $ 18,500
Benefit plans funded with treasury stock | 695,560 | 1,480,913
Safe Harbor Plan |  |
Benefit plans funded with treasury stock | $ 695,560 | $ 1,480,913

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- Definition Description of defined contribution pension and other postretirement plans. + 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=121586364&loc=d3e3602-108585 + Details
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