11) Retirement Plans: 401(k) Plans (Details) - USD ($)	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
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 and $18,000 for the years 2017 and 2016, respectively or the statutory limits.
Defined Contribution Plan, Maximum Annual Contributions Per Employee, Amount	$ 18,000	$ 18,000
SafeHarborPlanMember
Contribution to Retirement Plan	$ 1,534,861	$ 1,429,962