Consolidated Statements of Cash Flows - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Cash flows from operating activities:
Net earnings		$ 19,493	$ 10,662	$ 10,426
Adjustments to reconcile net earnings to net cash provided by operating activities:
Provision for loan losses		3,300	1,400	1,400
Valuation allowance on real estate owned		19	31	12
Amortization of investment security premiums, net		1,223	1,682	1,908
Amortization of purchase accounting adjustment on loans		(67)	(48)	(211)
Amortization of purchase accounting adjustment on subordinated debentures				167
Amortization of intangibles		1,602	1,206	1,111
Depreciation		987	1,018	1,005
Increase in cash surrender value of bank owned life insurance	[1]	(611)	(752)	(644)
Stock-based compensation		304	286	223
Deferred income taxes		(503)	(195)	969
Net (gain) loss on investment securities		(2,448)	177	(20)
Net loss (gain) on sales of premises and equipment and foreclosed assets		29	(52)	58
Net gains on sales of loans	[1]	(15,155)	(6,353)	(5,023)
Proceeds from sale of loans		407,978	207,187	167,001
Origination of loans held for sale		(402,564)	(205,532)	(160,729)
Changes in assets and liabilities:
Accrued interest and other assets		(2,606)	817	(72)
Accrued interest, expenses and other liabilities		3,833	(2,427)	3,657
Net cash provided by operating activities		14,814	9,107	21,238
Cash flows from investing activities:
Net increase in loans		(175,721)	(44,641)	(56,915)
Maturities and prepayments of investment securities		57,903	73,592	54,617
Purchases of investment securities		(46,540)	(53,197)	(82,742)
Proceeds from sale of investment securities		61,163	15,318	21,126
Proceeds from sales of common stock investments				7
Redemption of bank stocks		3,001	7,852	10,380
Purchase of bank stocks		(4,365)	(6,185)	(9,733)
Proceeds from sales of premises and equipment and foreclosed assets		366	258	424
Proceeds from bank owned life insurance			284
Purchases of premises and equipment, net		(359)	(1,038)	(1,308)
Net cash used in investing activities		(104,552)	(7,757)	(64,144)
Cash flows from financing activities:
Net increase in deposits		180,979	11,400	58,090
Federal Home Loan Bank advance borrowings		161,170	430,322	635,303
Federal Home Loan Bank advance repayments		(164,170)	(447,322)	(646,903)
Proceeds from other borrowings		1,075	2,302	1,737
Repayments on other borrowings		(12,252)
Proceeds from exercise of stock options		42	36	534
Payment of dividends		(3,633)	(3,508)	(3,325)
Purchase of treasury stock		(2,349)
Net cash provided by (used in) financing activities		160,862	(6,770)	45,436
Net increase (decrease) in cash and cash equivalents		71,124	(5,420)	2,530
Cash and cash equivalents at beginning of year		13,694	19,114	16,584
Cash and cash equivalents at end of year		84,818	13,694	19,114
Supplemental disclosure of cash flow information:
Cash payments (refunds) received during the year for income taxes		4,135	722	(1,364)
Cash paid during the year for interest		3,005	6,795	5,030
Cash paid during the year for operating leases		179	163	143
Supplemental schedule of noncash investing and financing activities:
Transfer of loans to real estate owned		1,886	482	96
Operating lease asset and related liability recorded			$ 353

[1] Not within the scope of ASC 606.