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2. Investment Securities (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2020	Dec. 31, 2019
Investment securities available for sale
Amortized cost	$ 194,066	$ 191,013
Estimated fair value	201,514	195,746
Mortgage-backed securities
Investment securities available for sale
Amortized cost	80,815	77,812
Gross unrealized gains	3,391	1,371
Gross unrealized losses	130	227
Estimated fair value	84,076	78,956
U.S. Government sponsored enterprises
Investment securities available for sale
Amortized cost	26,275	28,265
Gross unrealized gains	905	443
Gross unrealized losses	272	311
Estimated fair value	26,908	28,397
State and political subdivisions
Investment securities available for sale
Amortized cost	86,726	84,686
Gross unrealized gains	3,691	3,657
Gross unrealized losses	137	200
Estimated fair value	90,280	88,143
Trust preferred securities
Investment securities available for sale
Amortized cost	250	250
Gross unrealized gains	0	0
Gross unrealized losses	0	0
Estimated fair value	250	250
Total
Investment securities available for sale
Gross unrealized gains	7,987	5,471
Gross unrealized losses	$ 539	$ 738

X

- Definition

Amount of investment in debt and equity securities categorized neither as held-to-maturity nor trading.

+ References

No definition available.

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- Definition

This item represents the cost of debt and equity securities, which are categorized neither as held-to-maturity nor trading, net of adjustments including accretion, amortization, collection of cash, previous other-than-temporary impairments recognized in earnings (less any cumulative-effect adjustments recognized, as defined), and fair value hedge accounting adjustments, if any.

+ References

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- Definition

Amount of unrealized gain before deducting unrealized loss on investments in debt and equity securities classified as available-for-sale securities.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=121645371&loc=d3e27161-111563

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- Definition

Amount of unrealized loss before deducting unrealized gain on investments in available-for-sale securities.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=121645371&loc=d3e27161-111563

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