Equity-Based Compensation Plans (Details Narrative) (USD $)	9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Dec. 31, 2011
Stock based compensation expense	$ 280,000	$ 643,000
Balance options outstanding, end	521,613		493,850
Granted options	75,000
Fair value of equity grant, per share	$ 9.99
Stock based compensation, income tax benefit	109,000	251,000
Proceeds from stock options exercised	0	30,000
First Bancorp Plans
Exercise price range - floor	$ 9.76
Exercise prices range - ceiling	$ 22.12
Shares remaining available for grant	758,731
First Bancorp 2007 Equity Plan
Director equity grants granted, value	16,000
First Bancorp 2007 Equity Plan | February 2011 Award
Total compensation expense associated with senior executives grants	105,500
Stock based compensation expense	29,600
Subsequent quarter compensation expense associated with senior executives grants	11,800
Equity grants	7,259
Fair value of equity grant, per share	$ 14.54
First Bancorp 2007 Equity Plan | June 2011 Award
Equity grants		21,210
Fair value of equity grant, per share		$ 11.39
Director equity grants granted, per director number of award options		1,414
First Bancorp 2007 Equity Plan | February 2012 Award
Total compensation expense associated with senior executives grants	89,700
Stock based compensation expense	24,400
Subsequent quarter compensation expense associated with senior executives grants	$ 13,000
Equity grants	9,559
Fair value of equity grant, per share	$ 10.96
First Bancorp 2007 Equity Plan | June 2012 Award
Equity grants	25,452
Fair value of equity grant, per share	$ 8.86
Director equity grants granted, per director number of award options	1,818
Restricted Stock | Chief Executive Officer
Equity grants	40,000
Fair value of equity grant, per share	$ 9.76
Stock Options | Chief Executive Officer
Granted options	75,000
Fair value of options granted, per share	$ 3.65