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Equity-Based Compensation Plans (Narrative) (Details) - USD ($)	1 Months Ended		12 Months Ended				36 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2017
Stock based compensation expense				$ 1,095,000	$ 714,000	$ 710,000
Stock based compensation, income tax benefit				405,000	264,000	277,000
Proceeds from stock options exercised				$ 287,000	375,000	112,000
Restricted Stock [Member] | Subsequent Event [Member]
Stock based compensation expense			$ 733,000
First Bancorp Plans [Member]
Vesting period				10 years
Exercise price range - floor				$ 14.35
Exercise prices range - ceiling				$ 16.81
Stock options outstanding				38,689			38,689
First Bancorp Plans [Member] | 2014 Equity Plan [Member]
Shares remaining available for grant				809,690			809,690
Director [Member]
Stock based compensation expense				$ 320,000
Employees Grants [Member]
Stock based compensation expense				775,000
Non-Employee Directors [Member]
Stock based compensation expense	$ 320,000	$ 129,000
Shares granted to directors	11,190	6,584
Shares granted per director	1,119	823
Shares granted to directors, Per share	$ 28.59	$ 19.56
Senior Executives [Member] | Restricted Stock [Member]
Total compensation expense associated with senior executives grants				758,000			$ 758,000
Stock based compensation expense				$ 282,000	220,000	93,000
Vesting period				3 years
Grants in period (options)							55,648
Percent of bonus earned under the incentive plan in cash				50.00%
Percent of bonus earned under the incentive plan in shares of restricted stock				50.00%
Employees [Member]
Stock based compensation expense				$ 491,000	$ 366,000	$ 488,000	$ 2,800,000
Vesting period							3 years
Grants in period (options)							130,059

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Represents percent of bonus earned under the incentive plan in cash.

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Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Amount of cash inflow from exercise of stock options granted under share-based compensation arrangement.

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Period which an employee's right to exercise an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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