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Quarterly Results of Operations (Unaudited) (Details) - USD ($) $ / shares in Units, $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2019 | Sep. 30, 2019 | Jun. 30, 2019 | Mar. 31, 2019 | Dec. 31, 2017 | Sep. 30, 2017 | Jun. 30, 2017 | Mar. 31, 2017 | Dec. 31, 2019 | Dec. 31, 2018
Quarterly Results of Operations (Unaudited) |  |  |  |  |  |  |  |  |  |
Interest income | $ 3,641 | $ 3,590 | $ 3,574 | $ 3,709 | $ 3,844 | $ 3,862 | $ 3,543 | $ 3,444 | $ 14,514 | $ 14,693
Interest expense | 461 | 446 | 450 | 570 | 599 | 560 | 490 | 452 | 1,927 | 2,102
Net interest income | 3,180 | 3,144 | 3,124 | 3,139 | 3,245 | 3,302 | 3,053 | 2,992 | 12,587 | 12,591
Provision for credit losses | (179) | (139) | 30 | 173 | 255 | 246 | (5) | 360 | (115) | 856
Net securities gains |  |  |  | 3 |  |  |  |  | 3 |
Income before income taxes | 676 | 818 | 386 | 171 | 365 | 528 | 433 | 283 | 2,051 | 1,713
Net income | $ 539 | $ 606 | $ 319 | $ 135 | $ 307 | $ 439 | $ 478 | $ 255 | $ 1,599 | $ 1,583
Net income per share (basic and diluted) | $ 0.19 | $ 0.21 | $ 0.11 | $ 0.05 | $ 0.11 | $ 0.16 | $ 0.17 | $ 0.09 | $ 0.57 | $ 0.56

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- Definition Amount of unrealized and realized gain (loss) on investment in debt and equity securities. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03(9)(a)) -URI http://asc.fasb.org/extlink&oid=116634182&loc=SL114868664-224227 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03(7)(c)) -URI http://asc.fasb.org/extlink&oid=116634182&loc=SL114868664-224227 + Details
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- Definition The amount of net income or loss for the period per each share in instances when basic and diluted earnings per share are the same amount and reported as a single line item on the face of the financial statements. Basic earnings per share is the amount of net income or loss for the period per each share of common stock or unit outstanding during the reporting period. Diluted earnings per share includes the amount of net income or loss for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 45 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=117326831&loc=d3e1337-109256 + Details
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