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Parent Company Financial Information (Condensed Statements of Cash Flows, Parent Only) (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2020 | Sep. 30, 2020 | Jun. 30, 2020 | Mar. 31, 2020 | Dec. 31, 2019 | Sep. 30, 2019 | Jun. 30, 2019 | Mar. 31, 2019 | Dec. 31, 2020 | Dec. 31, 2019
Cash flows from operating activities: |  |  |  |  |  |  |  |  |  |
Net income | $ 3,886 | $ 3,391 | $ 5,335 | $ 3,118 | $ 4,014 | $ 4,206 | $ 4,224 | $ 3,754 | $ 15,730 | $ 16,198
Adjustments to reconcile net income to cash provided by operating activities: |  |  |  |  |  |  |  |  |  |
Amortization of debt issuance costs |  |  |  |  |  |  |  |  | 40 |
Stock-based compensation expense |  |  |  |  |  |  |  |  | 263 | 149
Net decrease in other assets |  |  |  |  |  |  |  |  | (255) | 2,304
Net increase (decrease) in other liabilities |  |  |  |  |  |  |  |  | 2,317 | (7,834)
Net cash provided by operating activities |  |  |  |  |  |  |  |  | 18,430 | 13,743
Cash flows from investing activities: |  |  |  |  |  |  |  |  |  |
Proceeds from maturities and principal payments of investment securities available for sale |  |  |  |  |  |  |  |  | 45,329 | 35,447
Purchases of premises and equipment |  |  |  |  |  |  |  |  | (2,375) | (2,244)
Purchases of bank owned life insurance |  |  |  |  |  |  |  |  | (319) | (25,621)
Net cash (used in) investing activities |  |  |  |  |  |  |  |  | (280,080) | (45,678)
Cash flows from financing activities: |  |  |  |  |  |  |  |  |  |
Increase in short-term borrowings |  |  |  |  |  |  |  |  | (176) | (59,586)
Proceeds from the issuance of subordinated debt |  |  |  |  |  |  |  |  | 24,389 |
Common stock dividends paid |  |  |  |  |  |  |  |  | 0 | 0
Exercise of stock options |  |  |  |  |  |  |  |  | 3 |
Repurchase of shares for tax withholding on exercised options and vested restricted stock |  |  |  |  |  |  |  |  | (39) | (88)
Net cash provided by financing activities |  |  |  |  |  |  |  |  | 353,596 | 59,681
Net increase in cash and cash equivalents |  |  |  |  |  |  |  |  | 91,946 | 27,746
Cash and cash equivalents at beginning of period |  |  |  | 94,971 |  |  |  | 67,225 | 94,971 | 67,225
Cash and cash equivalents at end of period | 186,917 |  |  |  | 94,971 |  |  |  | 186,917 | 94,971
Parent Company [Member] |  |  |  |  |  |  |  |  |  |
Cash flows from operating activities: |  |  |  |  |  |  |  |  |  |
Net income |  |  |  |  |  |  |  |  | 15,730 | 16,198
Adjustments to reconcile net income to cash provided by operating activities: |  |  |  |  |  |  |  |  |  |
Equity in undistributed net income of subsidiaries |  |  |  |  |  |  |  |  | (16,957) | (16,568)
Amortization of debt issuance costs |  |  |  |  |  |  |  |  | 40 |
Stock-based compensation expense |  |  |  |  |  |  |  |  | 263 | 149
Gain on sale of subsidiary |  |  |  |  |  |  |  |  | 152 |
Net decrease in other assets |  |  |  |  |  |  |  |  | (250) | (1,093)
Net increase (decrease) in other liabilities |  |  |  |  |  |  |  |  | 1,485 | (6,109)
Net cash provided by operating activities |  |  |  |  |  |  |  |  | 159 | (7,423)
Cash flows from investing activities: |  |  |  |  |  |  |  |  |  |
Purchases of bank owned life insurance |  |  |  |  |  |  |  |  | (319) | (139)
Transfer to subsidiary |  |  |  |  |  |  |  |  |  | (571)
Net cash (used in) investing activities |  |  |  |  |  |  |  |  | (319) | (710)
Cash flows from financing activities: |  |  |  |  |  |  |  |  |  |
Increase in short-term borrowings |  |  |  |  |  |  |  |  |  | (1,041)
Proceeds from the issuance of subordinated debt |  |  |  |  |  |  |  |  | 24,389 |
Common stock dividends paid |  |  |  |  |  |  |  |  | (5,950) | (5,347)
Retirement of common stock |  |  |  |  |  |  |  |  | (9,112) | (4,452)
Exercise of stock options |  |  |  |  |  |  |  |  | 3 |
Repurchase of shares for tax withholding on exercised options and vested restricted stock |  |  |  |  |  |  |  |  | (39) | (88)
Net cash provided by financing activities |  |  |  |  |  |  |  |  | 9,291 | (10,928)
Net increase in cash and cash equivalents |  |  |  |  |  |  |  |  | 9,131 | (19,061)
Cash and cash equivalents at beginning of period |  |  |  | $ 7,522 |  |  |  | $ 26,583 | 7,522 | 26,583
Cash and cash equivalents at end of period | $ 16,653 |  |  |  | $ 7,522 |  |  |  | $ 16,653 | 7,522
Supplemental cash flow information: |  |  |  |  |  |  |  |  |  |
Transfer of available for sale securities to banking subsidiary |  |  |  |  |  |  |  |  |  | $ 5,032

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- Definition Amount of cash outflow for payment of premium on corporate-owned life insurance policy, classified as investing activities. Includes, but is not limited to, bank-owned life insurance policy. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 21C -URI http://asc.fasb.org/extlink&oid=121586364&loc=SL94080552-108585 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 13 -URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3213-108585 + Details
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- Definition The cash outflow associated with the acquisition of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale; includes cash outflows to pay for construction of self-constructed assets. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 13 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3213-108585 + Details
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- Definition The cash inflow from a borrowing where a lender is placed in a lien position behind debt having a higher priority of repayment (senior) in liquidation of the entity's assets or underlying collateral. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3255-108585 + Details
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- Definition Amount of cash inflow from maturity, prepayment and call of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 45 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=121553693&loc=d3e26853-111562 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3151-108585 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 12 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3179-108585 + Details
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- Definition Amount of cash inflow from exercise of option under share-based payment arrangement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2A -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=120381028&loc=SL79508275-113901 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3255-108585 + Details
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- Definition Amount of noncash expense for share-based payment arrangement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3602-108585 + Details
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