Condensed Financial Information of Parent Company Only Disclosure: Condensed Cash Flow Statement (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	$ 12,689	$ 29,053
Income (Loss) from Equity Method Investments	(1,304)	2,111
Other Noncash Income (Expense)	8,261	6,644
Increase (Decrease) in Income Taxes Payable, Net of Income Taxes Receivable	2,285	1,112
Increase (Decrease) in Other Operating Assets and Liabilities, Net	(1,956)	(7,599)
Net Cash Provided by (Used in) Operating Activities	39,174	36,017
Proceeds from (Payments for) Securities Purchased under Agreements to Resell	(95,094)	(1,794)
Payments to Acquire Debt Securities, Available-for-sale	(168,540)	(126,529)
Proceeds from Sale of Debt Securities, Available-for-sale	161,239	72,905
Proceeds from Maturities, Prepayments and Calls of Debt Securities, Available-for-sale	86,460	32,813
Net Cash Provided by (Used in) Investing Activities	(27,137)	(27,690)
Payments for Repurchase of Common Stock	(4,057)	(4,140)
Payments of Ordinary Dividends, Common Stock	(5,231)	(3,712)
Proceeds from Stock Options Exercised	269	856
Payment, Tax Withholding, Share-based Payment Arrangement	(2,397)	(905)
Net Cash Provided by (Used in) Financing Activities	(18,213)	(9,717)
Cash and Cash Equivalents, at Carrying Value, Beginning Balance	26,173
Cash and Cash Equivalents, at Carrying Value, Ending Balance	21,094	26,173
Parent Company
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	12,689	29,053
Income (Loss) from Equity Method Investments	(19,061)	(32,459)
Other Noncash Income (Expense)	3,247	2,465
Increase (Decrease) in Income Taxes Payable, Net of Income Taxes Receivable	(17,793)	3,221
Increase (Decrease) in Other Operating Assets and Liabilities, Net	(48)	(660)
Net Cash Provided by (Used in) Operating Activities	(20,966)	1,620
Change In Investments In and Advances To Subsidiaries	34,544	17,779
Proceeds from (Payments for) Securities Purchased under Agreements to Resell	(39,438)	0
Payments to Acquire Debt Securities, Available-for-sale	(1,154)	(16,000)
Proceeds from Sale of Debt Securities, Available-for-sale	8,432	4,469
Proceeds from Maturities, Prepayments and Calls of Debt Securities, Available-for-sale	28,193	429
Net Cash Provided by (Used in) Investing Activities	30,577	6,677
Payments for Repurchase of Common Stock	(4,057)	(4,140)
Payments of Ordinary Dividends, Common Stock	(5,231)	(3,712)
Proceeds from Stock Options Exercised	269	856
Payment, Tax Withholding, Share-based Payment Arrangement	(2,397)	(905)
Net Cash Provided by (Used in) Financing Activities	(11,416)	(7,901)
Cash and Cash Equivalents, Period Increase (Decrease)	(1,805)	396
Cash and Cash Equivalents, at Carrying Value, Beginning Balance	2,700	2,304
Cash and Cash Equivalents, at Carrying Value, Ending Balance	895	2,700
SEC Schedule, 12-04, Cash Dividends Paid to Registrant, Consolidated Subsidiaries	53,129	17,833
Restricted Cash	0	0
Parent Company | Subsidiaries
Increase (Decrease) in Income Taxes Payable	$ (17,086)	$ 5,778