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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

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