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Stock-Based Compensation Plans (Narrative) (Details) - USD ($) | 3 Months Ended
--- | ---
Mar. 31, 2019 | Mar. 31, 2018
Stock based compensation expense | $ 403,000 | $ 231,000
Unrecognized compensation cost | $ 2,737,000 |
Unrecognized compensation cost, weighted-average remaining term | 2 years 2 months 12 days |
Stock-based compensation expense expected to be recorded | $ 379,000 |
Stock based compensation, income tax benefit | 94,000 | 54,000
Proceeds from stock options exercised |  | $ 108,000
First Bancorp 2014 Equity Plan [Member] |  |
Shares remaining available for grant | 727,934 |
First Bancorp Plans [Member] |  |
Stock options outstanding | 9,000 |
Exercise price | $ 14.35 |

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- Definition The carrying amount of the liability as of the balance sheet date to an individual under a deferred compensation arrangement. This amount may be the result of periodic accruals made over the period of active employment, or reflect termination benefits resulting contractual terms or a death benefit. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 710 -SubTopic 10 -Section 30 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6409875&loc=d3e20015-108363 + Details
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