18) Accumulated Other Comprehensive Income: Accumulated Balances of Other Comprehensive Income (Details) - USD ($)	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Details
Unrealized net gains on available- for-sale securities and trust investments	$ 266,840	$ (490,850)
Increase (Decrease) in Unrealized net gains on available- for-sale securities and trust investments	336,330	757,690
Unrealized net gains on available- for-sale securities and trust investments	603,170	266,840
Unrealized gains (losses) on derivative bank loan interest rate swaps	(2,018)	(8,508)
Increase (Decrease) in Unrealized gains (losses) on derivative bank loan interest rate swaps	2,018	6,490
Unrealized gains (losses) on derivative bank loan interest rate swaps		(2,018)
Other comprehensive income, Balance	264,822	(499,358)
Increase (Decrease) in Other comprehensive income, Balance	338,348	764,180
Other comprehensive income, Balance	$ 603,170	$ 264,822