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Loans (Details) - USD ($) $ in Thousands | 3 Months Ended |
--- | --- | ---
Mar. 31, 2018 | Mar. 31, 2017 | Dec. 31, 2017
Segments of loan portfolio and allowance for loan losses [Abstract] |  |  |
Total financing receivables | $ 1,031,738 |  | $ 1,000,525
Individually evaluated for impairment | 24,520 |  | 24,398
Loans acquired with deteriorated credit quality | 2,584 |  | 2,638
Collectively evaluated for impairment | 1,004,634 |  | 973,489
Allowance for loan losses | 11,587 |  | 11,190
Allowance for loan losses related to individually evaluated for impairment | 408 |  | 410
Allowance for loan losses related to loans acquired with deteriorated credit quality | 0 |  | 0
Allowance for loan losses related to collectively evaluated for impairment | 11,179 |  | 10,780
Net loans | 1,020,151 |  | 989,335
Net loans, individually evaluated for impairment | 24,112 |  | 23,988
Net loans, loans acquired with deteriorated credit quality | 2,584 |  | 2,638
Net loans, collectively evaluated for impairment | $ 993,455 |  | 962,709
Minimum [Member] |  |  |
Segments of loan portfolio and allowance for loan losses [Abstract] |  |  |
Number of days past for loan to be considered impaired, Minimum | 90 days |  |
First Mortgage [Member] | Minimum [Member] |  |  |
Segments of loan portfolio and allowance for loan losses [Abstract] |  |  |
Period of mortgage on real estate | 15 years |  |
First Mortgage [Member] | Maximum [Member] |  |  |
Segments of loan portfolio and allowance for loan losses [Abstract] |  |  |
Period of mortgage on real estate | 30 years |  |
Second Mortgage [Member] | Maximum [Member] |  |  |
Segments of loan portfolio and allowance for loan losses [Abstract] |  |  |
Period of mortgage on real estate | 15 years |  |
Real Estate Loans [Member] | Residential [Member] |  |  |
Segments of loan portfolio and allowance for loan losses [Abstract] |  |  |
Total financing receivables | $ 215,349 |  | 214,479
Individually evaluated for impairment | 1,234 |  | 1,065
Loans acquired with deteriorated credit quality | 31 |  | 33
Collectively evaluated for impairment | 214,084 |  | 213,381
Real Estate Loans [Member] | Commercial [Member] |  |  |
Segments of loan portfolio and allowance for loan losses [Abstract] |  |  |
Total financing receivables | 320,381 |  | 308,084
Individually evaluated for impairment | 13,949 |  | 13,864
Loans acquired with deteriorated credit quality | 1,422 |  | 1,460
Collectively evaluated for impairment | 305,010 |  | 292,760
Real Estate Loans [Member] | Agricultural [Member] |  |  |
Segments of loan portfolio and allowance for loan losses [Abstract] |  |  |
Total financing receivables | 248,710 |  | 239,957
Individually evaluated for impairment | 3,818 |  | 3,901
Loans acquired with deteriorated credit quality | 689 |  | 702
Collectively evaluated for impairment | 244,203 |  | 235,354
Real Estate Loans [Member] | Construction [Member] |  |  |
Segments of loan portfolio and allowance for loan losses [Abstract] |  |  |
Total financing receivables | 22,239 |  | 13,502
Individually evaluated for impairment | 0 |  | 0
Loans acquired with deteriorated credit quality | 0 |  | 0
Collectively evaluated for impairment | 22,239 |  | 13,502
Consumer [Member] |  |  |
Segments of loan portfolio and allowance for loan losses [Abstract] |  |  |
Total financing receivables | 9,672 |  | 9,944
Individually evaluated for impairment | 0 |  | 8
Loans acquired with deteriorated credit quality | 0 |  | 0
Collectively evaluated for impairment | 9,672 |  | 9,936
Other Commercial Loans [Member] |  |  |
Segments of loan portfolio and allowance for loan losses [Abstract] |  |  |
Total financing receivables | 74,930 |  | 72,013
Individually evaluated for impairment | 4,139 |  | 4,197
Loans acquired with deteriorated credit quality | 442 |  | 443
Collectively evaluated for impairment | 70,349 |  | 67,373
Other Agricultural Loans [Member] |  |  |
Segments of loan portfolio and allowance for loan losses [Abstract] |  |  |
Total financing receivables | 40,396 |  | 37,809
Individually evaluated for impairment | 1,380 |  | 1,363
Loans acquired with deteriorated credit quality | 0 |  | 0
Collectively evaluated for impairment | 39,016 |  | 36,446
State and Political Subdivision Loans [Member] |  |  |
Segments of loan portfolio and allowance for loan losses [Abstract] |  |  |
Total financing receivables | 100,061 |  | 104,737
Individually evaluated for impairment | 0 |  | 0
Loans acquired with deteriorated credit quality | 0 |  | 0
Collectively evaluated for impairment | 100,061 |  | 104,737
First National Bank of Fredericksburg [Member] |  |  |
Changes in the accretable yield for purchased credit-impaired loans [Roll Forward] |  |  |
Balance at beginning of period | 106 | $ 389 |
Accretion | (24) | (114) |
Balance at end of period | 82 | $ 275 |
Loans acquired with specific evidence of deterioration in credit quality [Abstract] |  |  |
Outstanding balance | 5,284 |  | 5,295
Carrying amount | $ 2,584 |  | $ 2,638

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- Definition Amount of allowance to cover probable credit losses on loans and leases. Includes carryover of or adjustments to the allowance for loan losses in connection with business combinations. Excludes allowance for loans and leases covered under loss sharing agreements, related to Individually evaluated for impairment, related to Collectively evaluated for impairment. + References No definition available. + Details
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- Definition Amount of allowance to cover probable credit losses on loans and leases. Includes carryover of or adjustments to the allowance for loan losses in connection with business combinations. Excludes allowance for loans and leases covered under loss sharing agreements, related to Individually evaluated for impairment. + References No definition available. + Details
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- Definition Amount after allowance and deduction of deferred interest and fees, unamortized costs and premiums and discounts from face amounts, of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Excludes loans and leases covered under loss sharing agreements and loans held for sale. Related to Loans acquired with deteriorated credit quality. + References No definition available. + Details
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- Definition Amount of the excess of a loan's cash flows expected to be collected over the investor's initial investment in acquired loans not accounted for as debt securities with evidence of deterioration of credit quality. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=82894903&loc=d3e15032-111544 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 30 -Section 15 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=82894507&loc=d3e13503-111538 + Details
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- Definition Amount of accretion recognized for the excess of a loan's cash flows expected to be collected over the investor's initial investment in acquired loans not accounted for as debt securities, with evidence of deterioration of credit quality. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 30 -Section 15 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=82894507&loc=d3e13503-111538 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=82894903&loc=d3e15032-111544 + Details
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- Definition The recorded balance, net of any applicable reductions (for example, unamortized accretable yield and allowance for loan losses). This relates to loans not accounted for debt securities with evidence of deterioration of credit quality since origination that were acquired by completion of a transfer for which it is probable, at acquisition, that the investor will be unable to collect all contractually required payments receivable. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=82894903&loc=d3e15032-111544 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 30 -Section 15 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=82894507&loc=d3e13503-111538 + Details
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- Definition The undiscounted sum of all amounts, including amounts deemed principal, interest, fees, penalties, and other under the loan, owed to the investor at the reporting date, whether or not currently due and whether or not any such amounts have been written or charged off by the investor. This relates to loans not accounted for as debt securities, with evidence of deterioration of credit quality since origination that were acquired by completion of a transfer for which it is probable, at acquisition, that the investor will be unable to collect all contractually required payments receivable. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 30 -Section 15 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=82894507&loc=d3e13503-111538 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=82894903&loc=d3e15032-111544 + Details
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- Definition Amount of allowance to cover probable credit losses on loans and leases. Includes carryover of or adjustments to the allowance for loan losses in connection with business combinations. Excludes allowance for loans and leases covered under loss sharing agreements. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953423-111524 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953423-111524 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.7(d)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section S99 -Paragraph 4 -Subparagraph (SAB Topic 6.L.1) -URI http://asc.fasb.org/extlink&oid=27010918&loc=d3e74567-122707 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (b)(1)(ii) -URI http://asc.fasb.org/extlink&oid=82894903&loc=d3e15032-111544 + Details
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