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15. Fair Value of Financial Instruments (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Assets:
Investment securities available for sale	$ 229,321	$ 249,946
Mortgage loans held for sale	857	5,709
Carrying Amount
Assets:
Cash and cash equivalents	53,186	70,094
Investment securities available for sale	229,321	249,946
Other investments	1,830	2,635
Mortgage loans held for sale	857	5,709
Loans, net	753,398	716,261
Cash surrender value of life insurance	15,552	14,952
Liabilities:
Deposits	906,952	892,918
Securities sold under agreements to repurchase	37,757	36,434
FHLB borrowings		20,000
Junior subordinated debentures	20,619	20,619
Level 1
Assets:
Cash and cash equivalents	53,186	70,094
Investment securities available for sale	0	0
Other investments	0	0
Mortgage loans held for sale	0	0
Loans, net	0	0
Cash surrender value of life insurance	0	0
Liabilities:
Deposits	0	0
Securities sold under agreements to repurchase	0	0
FHLB borrowings		0
Junior subordinated debentures	0	0
Level 2
Assets:
Cash and cash equivalents	0	0
Investment securities available for sale	229,071	249,196
Other investments	0	0
Mortgage loans held for sale	0	0
Loans, net	0	0
Cash surrender value of life insurance	15,552	14,952
Liabilities:
Deposits	0	0
Securities sold under agreements to repurchase	37,757	36,434
FHLB borrowings		18,864
Junior subordinated debentures	20,619	20,619
Level 3
Assets:
Cash and cash equivalents	0	0
Investment securities available for sale	250	750
Other investments	1,830	2,635
Mortgage loans held for sale	857	5,709
Loans, net	735,837	720,675
Cash surrender value of life insurance	0	0
Liabilities:
Deposits	894,932	884,510
Securities sold under agreements to repurchase	0	0
FHLB borrowings		0
Junior subordinated debentures	0	0
Estimated Fair Value
Assets:
Cash and cash equivalents	53,186	70,094
Investment securities available for sale	229,321	249,946
Other investments	1,830	2,635
Mortgage loans held for sale	857	5,709
Loans, net	735,837	720,675
Cash surrender value of life insurance	15,552	14,952
Liabilities:
Deposits	894,932	884,510
Securities sold under agreements to repurchase	37,757	36,434
FHLB borrowings		18,864
Junior subordinated debentures	$ 20,619	$ 20,619

X

- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 25
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=75030427&loc=d3e22054-111558

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-Topic 320
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-Section 50
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-Topic 320
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X

- Definition

Fair value portion of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.

+ References

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- Definition

Fair value portion of the amount that could be realized under a life insurance contract or contracts owned by the entity, commonly known as corporate-owned life insurance (COLI) or bank-owned life insurance (BOLI).

+ References

No definition available.

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- Definition

Fair value portion of deposit liabilities held by the entity, including, but not limited to, foreign and domestic, interest and noninterest bearing, demand deposits, saving deposits, negotiable orders of withdrawal (NOW) and time deposits.

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- Definition

Fair value of subordinated debt obligations including, but not limited to, subordinated loan, subordinated bond, subordinated debenture or junior debt.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=66048111&loc=d3e19207-110258

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=66048111&loc=d3e19207-110258

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- Definition

Fair value portion of borrowing from Federal Home Loan Bank (FHLBank).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03.13(3)(a))
-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

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Fair value portion of loan receivable, including, but not limited to, mortgage loans held for investment, finance receivables held for investment, policy loans on insurance contracts.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
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Fair value portion of other assets.

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- Definition

Fair value portion of securities that an entity sells and agrees to repurchase at a specified date for a specified price.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 10
-URI http://asc.fasb.org/extlink&oid=77997519&loc=d3e13433-108611

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