Stockholders' Equity (Tables)

6 Months Ended

Jun. 30, 2017

Equity [Abstract]

Summary of Shares Repurchased Under Stock Purchase Program

The following table is a summary of the shares under the program, all share repurchased in 2016 where purchased in the first three months of the year:

	Six Months Ended June 30,
	2017		2016
Number of shares repurchased		—		100,000
Average price of shares repurchased	$	—	$	55.23
Shares remaining to be repurchased		150,000		66,276

Required Capital Amounts and Company's Respective Ratios

The actual and required capital amounts and ratios are shown in the following table:

					Required								To Be Well
					For Capital				With				Capitalized Under
					Adequacy				Capital Conservation				Prompt Corrective
	Actual				Purposes				Buffer				Action Provisions
	Amount		Ratio		Amount		Ratio		Amount		Ratio		Amount		Ratio
	(Dollars in thousands)
As of June 30, 2017:
Total Capital
(to Risk Weighted Assets)-
BancFirst Corporation	$	763,741		15.51%	$	394,051		8.00%	$	455,621		9.250%	N/A		N/A
BancFirst		685,395		13.93%		393,644		8.00%		455,151		9.250%	$	492,055		10.00%
Common Equity Tier 1 Capital
(to Risk Weighted Assets)-
BancFirst Corporation	$	683,736		13.88%	$	221,653		4.50%	$	283,224		5.750%	N/A		N/A
BancFirst		616,390		12.53%		221,425		4.50%		282,932		5.750%	$	319,836		6.50%
Tier 1 Capital
(to Risk Weighted Assets)-
BancFirst Corporation	$	714,736		14.51%	$	295,538		6.00%	$	357,108		7.250%	N/A		N/A
BancFirst		636,390		12.93%		295,233		6.00%		356,740		7.250%	$	393,644		8.00%
Tier 1 Capital
(to Total Assets)-
BancFirst Corporation	$	714,736		10.15%	$	281,701		4.00%	N/A		N/A		N/A		N/A
BancFirst		636,390		9.05%		281,404		4.00%	N/A		N/A		$	351,755		5.00%