Equity-Based Compensation Plans (Details Narrative) (USD $)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Stock based compensation expense	$ 311,000	$ 905,000	$ 640,000
Stock based compensation, income tax benefit	121,000	353,000	250,000
Proceeds from stock options exercised	0	30,000	171,000
Tax Benefits from the exercise of nonqualified stock options			36,000
December 2009 Restricted Shares Award
Stock based compensation expense	398,000	298,000	100,000
June 2008 Performance Unit an Stock Option Award
Stock based compensation expense		299,000	299,000
Equity Grant 1
Equity grants	9,559	7,259
Fair value of equity grant, per share	$ 10.96	$ 14.54
Equity Grant 2
Equity grants	25,452	21,210
Fair value of equity grant, per share	$ 8.86	$ 11.39
Director equity grants granted, per director number of award options	1,818	1,414
Equity Grant 3
Equity grants	40,000
Fair value of equity grant, per share	$ 9.76
Equity Grant 4
Equity grants	75,000
Fair value of equity grant, per share	$ 3.65
Director Grants
Stock based compensation expense	226,000
Employee Grants
Stock based compensation expense	85,000
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	41,400	41,700
Subsequent quarter compensation expense associated with senior executives grants	6,500	6,400
Equity grants		7,259
Fair value of equity grant, per share		$ 14.54
First Bancorp 2007 Equity Plan | February 2012 Award
Total compensation expense associated with senior executives grants	89,700
Stock based compensation expense	37,400
Subsequent quarter compensation expense associated with senior executives grants	$ 11,200