Allowance for Loan Losses (Tables)

3 Months Ended

Mar. 31, 2019

Provision for Loan and Lease Losses [Abstract]

Summary of allocation of the allowance as well as the activity in the allowance attributed to various segments in the loan portfolio

The following tables summarize the allocation of the ALLL, as well as the activity in the ALLL attributed to various segments in the loan portfolio as of and for the three months ended for the periods indicated:

	Three Months Ended March 31, 2019
	Commercial and industrial			Franchise			Commercial owner occupied			SBA			Agribusiness			Commercial non-owner occupied			Multi-family			One-to-four family			Construction			Farmland			Land			Consumer loans			Total
	(dollars in thousands)
Balance, December 31, 2018	$	10,821		$	6,500		$	1,386		$	4,288		$	3,283		$	1,604		$	725		$	805		$	5,166		$	503		$	772		$	219		$	36,072
Charge-offs	(302		)	—			—			—			—			—			—			—			—			—			—			(5		)	(307		)
Recoveries	67			—			8			3			—			—			—			—			—			—			—			1			79
Provisions for (reduction in) loan losses	(136		)	1,371			(89		)	882			(146		)	64			(56		)	(47		)	28			161			(6		)	(14		)	2,012
Balance, March 31, 2019	$	10,450		$	7,871		$	1,305		$	5,173		$	3,137		$	1,668		$	669		$	758		$	5,194		$	664		$	766		$	201		$	37,856
Amount of allowance attributed to:
Specifically evaluated impaired loans	$	143		$	1,569		$	—		$	1,500		$	—		$	—		$	—		$	—		$	—		$	—		$	—		$	—		$	3,212
General portfolio allocation	10,307			6,302			1,305			3,673			3,137			1,668			669			758			5,194			664			766			201			34,644
Loans individually evaluated for impairment	1,906			5,870			564			4,104			7,500			—			—			388			—			—			—			26			20,358
Specific reserves to total loans individually evaluated for impairment	7.50		%	26.73		%	—		%	36.55		%	—		%	—		%	—		%	—		%	—		%	—		%	—		%	—		%	15.78		%
Loans collectively evaluated for impairment	$	1,334,614		$	807,187		$	1,648,198		$	184,653		$	127,103		$	2,124,250		$	1,511,942		$	279,079		$	538,197		$	167,345		$	46,848		$	85,276		$	8,854,692
General reserves to total loans collectively evaluated for impairment	0.77		%	0.78		%	0.08		%	1.99		%	2.47		%	0.08		%	0.04		%	0.27		%	0.97		%	0.40		%	1.64		%	0.24		%	0.39		%
Total gross loans held for investment	$	1,336,520		$	813,057		$	1,648,762		$	188,757		$	134,603		$	2,124,250		$	1,511,942		$	279,467		$	538,197		$	167,345		$	46,848		$	85,302		$	8,875,050
Total allowance to gross loans held for investment	0.78		%	0.97		%	0.08		%	2.74		%	2.33		%	0.08		%	0.04		%	0.27		%	0.97		%	0.40		%	1.64		%	0.24		%	0.43		%

	Three Months Ended March 31, 2018
	Commercial and industrial			Franchise			Commercial owner occupied			SBA			Agribusiness			Commercial non-owner occupied			Multi-family			One-to-four family			Construction			Farmland			Land			Consumer loans			Total
	(dollars in thousands)
Balance, December 31, 2017	$	9,721		$	5,797		$	767		$	2,890		$	1,291		$	1,266		$	607		$	803		$	4,569		$	137		$	993		$	95		$	28,936
Charge-offs	(665		)	—			—			(29		)	—			—			—			—			—			—			—			(52		)	(746		)
Recoveries	25			—			8			26			—			—			—			—			—			—			—			—			59
Provisions for (reduction in) loan losses	411			298			16			(73		)	814			71			(15		)	(58		)	506			97			179			7			2,253
Balance, March 31, 2018	$	9,492		$	6,095		$	791		$	2,814		$	2,105		$	1,337		$	592		$	745		$	5,075		$	234		$	1,172		$	50		$	30,502
Amount of allowance attributed to:
Specifically evaluated impaired loans	$	—		$	—		$	—		$	—		$	—		$	—		$	—		$	—		$	—		$	—		$	—		$	—		$	—
General portfolio allocation	9,492			6,095			791			2,814			2,105			1,337			592			745			5,075			234			1,172			50			30,502
Loans individually evaluated for impairment	1,067			—			3,475			1,218			—			—			1,231			1,134			—			—			8			16			8,149
Specific reserves to total loans individually evaluated for impairment	—		%	—		%	—		%	—		%	—		%	—		%	—		%	—		%	—		%	—			—		%	—		%	—		%
Loans collectively evaluated for impairment	$	1,061,318		$	692,846		$	1,265,394		$	181,408		$	149,256		$	1,227,693		$	816,732		$	265,190		$	319,610		136,522			$	34,444		$	86,190		$	6,236,603
General reserves to total loans collectively evaluated for impairment	0.89		%	0.88		%	0.06		%	1.55		%	1.41		%	0.11		%	0.07		%	0.28		%	1.59		%	0.17		%	3.40		%	0.06		%	0.49		%
Total gross loans held for investment	$	1,062,385		$	692,846		$	1,268,869		$	182,626		$	149,256		$	1,227,693		$	817,963		$	266,324		$	319,610		136,522			$	34,452		$	86,206		$	6,244,752
Total allowance to gross loans held for investment	0.89		%	0.88		%	0.06		%	1.54		%	1.41		%	0.11		%	0.07		%	0.28		%	1.59		%	0.17		%	3.40		%	0.06		%	0.49		%