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Loans, net and allowance for loan losses (Tables)

12 Months Ended

Dec. 31, 2017

Loans, net and allowance for loan losses

Schedule of major classifications of loans outstanding

			December 31, 2017			December 31, 2016
Commercial		$	476,199		$	408,814
Real estate:
Commercial			786,210			700,144
Residential			287,935			289,781
Consumer			142,721			134,226
Total		$	1,693,065		$	1,532,965

Schedule of changes in allowance for loan losses account by major classification of loans

					Real estate
December 31, 2017		Commercial			Commercial			Residential			Consumer			Unallocated			Total
Allowance for loan losses:
Beginning balance		$	3,799		$	5,847		$	4,707		$	1,608		$	—		$	15,961
Charge-offs			(173)			(706)			(533)			(737)						(2,149)
Recoveries			20			124			44			160						348
Provisions			1,406			2,283			762			349			—			4,800
Ending balance		$	5,052		$	7,548		$	4,980		$	1,380		$			$	18,960
Ending balance: individually evaluated for impairment			159			263			336			8						766
Ending balance: collectively evaluated for impairment			4,893			7,285			4,644			1,372						18,194
Ending balance: loans acquired with deteriorated credit quality		$			$			$						$			$	—
Loans receivable:
Ending balance		$	476,199		$	786,210		$	287,935		$	142,721		$			$	1,693,065
Ending balance: individually evaluated for impairment			2,121			3,644			3,763			177						9,705
Ending balance: collectively evaluated for impairment			473,736			781,921			284,142			142,544						1,682,343
Ending balance: loans acquired with deteriorated credit quality		$	342		$	645		$	30		$			$			$	1,017

					Real estate
December 31, 2016		Commercial			Commercial			Residential			Consumer			Unallocated			Total
Allowance for loan losses:
Beginning balance		$	3,042		$	4,245		$	4,082		$	1,583		$	23		$	12,975
Charge-offs			(776)			(858)			(339)			(495)						(2,468)
Recoveries			86			122			69			177						454
Provisions			1,447			2,338			895			343			(23)			5,000
Ending balance		$	3,799		$	5,847		$	4,707		$	1,608		$			$	15,961
Ending balance: individually evaluated for impairment			225			1,197			520									1,942
Ending balance: collectively evaluated for impairment			3,574			4,650			4,187			1,608						14,019
Ending balance: loans acquired with deteriorated credit quality		$			$			$						$			$	—
Loans receivable:
Ending balance		$	408,814		$	700,144		$	289,781		$	134,226		$			$	1,532,965
Ending balance: individually evaluated for impairment			1,724			5,820			3,543			155						11,242
Ending balance: collectively evaluated for impairment			406,127			692,987			286,201			134,071						1,519,386
Ending balance: loans acquired with deteriorated credit quality		$	963		$	1,337		$	37					$			$	2,337

					Real estate
December 31, 2015		Commercial			Commercial			Residential			Consumer			Unallocated			Total
Allowance for loan losses:
Beginning balance		$	2,321		$	3,037		$	3,690		$	1,290		$			$	10,338
Charge-offs			(246)			(325)			(523)			(333)						(1,427)
Recoveries			77			144			26			117						364
Provisions			890			1,389			889			509			23			3,700
Ending balance		$	3,042		$	4,245		$	4,082		$	1,583		$	23		$	12,975
Ending balance: individually evaluated for impairment			759			126			1,138			117						2,140
Ending balance: collectively evaluated for impairment			2,283			4,012			2,944			1,466			23			10,728
Ending balance: loans acquired with deteriorated credit quality		$			$	107		$			$			$			$	107
Loans receivable:
Ending balance		$	365,767		$	567,277		$	306,218		$	101,603		$			$	1,340,865
Ending balance: individually evaluated for impairment			1,196			4,006			4,917			148						10,267
Ending balance: collectively evaluated for impairment			363,620			561,903			301,252			101,455						1,328,230
Ending balance: loans acquired with deteriorated credit quality		$	951		$	1,368		$	49		$			$			$	2,368

Schedule of major classification of loans portfolio summarized by credit quality

					Special
December 31, 2017		Pass			Mention			Substandard			Doubtful			Total
Commercial		$	472,185		$	1,958		$	2,056		$			$	476,199
Real estate:
Commercial			764,320			13,015			8,875						786,210
Residential			282,484			18			5,433						287,935
Consumer			142,507						214						142,721
Total		$	1,661,496		$	14,991		$	16,578		$			$	1,693,065

					Special
December 31, 2016		Pass			Mention			Substandard			Doubtful			Total
Commercial		$	398,867		$	6,222		$	3,725		$			$	408,814
Real estate:
Commercial			674,914			10,392			14,838						700,144
Residential			282,737			233			6,811						289,781
Consumer			133,983						243						134,226
Total		$	1,490,501		$	16,847		$	25,617		$			$	1,532,965

Schedule of information concerning nonaccrual loans by major loan classification

			December 31, 2017			December 31, 2016
Commercial		$	860		$	934
Real estate:
Commercial			3,821			7,016
Residential			2,994			3,003
Consumer			177			155
Total		$	7,852		$	11,108

Schedule of major classifications of loans by past due status

								Greater												Loans > 90
		30-59 Days			60-89 Days			than 90			Total Past									Days and
December 31, 2017		Past Due			Past Due			Days			Due			Current			Total Loans			Accruing
Commercial		$	124		$	216		$	860		$	1,200		$	474,999		$	476,199
Real estate:
Commercial			1,722			194			3,821			5,737			780,473			786,210
Residential			1,134			1,551			3,543			6,228			281,707			287,935		$	549
Consumer			1,101			364			363			1,828			140,893			142,721			186
Total		$	4,081		$	2,325		$	8,587		$	14,993		$	1,678,072		$	1,693,065		$	735

								Greater												Loans > 90
		30-59 Days			60-89 Days			than 90			Total Past									Days and
December 31, 2016		Past Due			Past Due			Days			Due			Current			Total Loans			Accruing
Commercial		$	249		$	75		$	934		$	1,258		$	407,556		$	408,814
Real estate:
Commercial			4,782			527			7,016			12,325			687,819			700,144
Residential			2,100			354			3,561			6,015			283,766			289,781		$	558
Consumer			962			259			441			1,662			132,564			134,226			286
Total		$	8,093		$	1,215		$	11,952		$	21,260		$	1,511,705		$	1,532,965		$	844

Summarized information concerning impaired loans

											For the Year Ended
					Unpaid						Average			Interest
		Recorded			Principal			Related			Recorded			Income
December 31, 2017		Investment			Balance			Allowance			Investment			Recognized
With no related allowance:
Commercial		$	1,279		$	1,439					$	1,668		$	43
Real estate:
Commercial			2,888			3,190						2,985			24
Residential			2,196			2,672						2,227			21
Consumer			169			181						173
Total			6,532			7,482						7,053			88
With an allowance recorded:
Commercial			1,184			1,218			159			991			50
Real estate:
Commercial			1,401			1,496			263			2,202			18
Residential			1,597			1,759			336			1,335			23
Consumer			8			8			8			20
Total			4,190			4,481			766			4,548			91
Commercial			2,463			2,657			159			2,659			93
Real estate:
Commercial			4,289			4,686			263			5,187			42
Residential			3,793			4,431			336			3,562			44
Consumer			177			189			8			193
Total		$	10,722		$	11,963		$	766		$	11,601		$	179

											For the Year Ended
					Unpaid						Average			Interest
		Recorded			Principal			Related			Recorded			Income
December 31, 2016		Investment			Balance			Allowance			Investment			Recognized
With no related allowance:
Commercial		$	2,404		$	3,213					$	1,461		$	48
Real estate:
Commercial			2,364			3,018						4,300			71
Residential			2,205			2,388						2,133			35
Consumer			155			155						147
Total			7,128			8,774						8,041			154
With an allowance recorded:
Commercial			283			283			225			859
Real estate:
Commercial			4,793			4,793			1,197			2,366			2
Residential			1,375			1,376			520			1,185			7
Consumer												50
Total			6,451			6,452			1,942			4,460			9
Commercial			2,687			3,496			225			2,320			48
Real estate:
Commercial			7,157			7,811			1,197			6,666			73
Residential			3,580			3,764			520			3,318			42
Consumer			155			155						197
Total		$	13,579		$	15,226		$	1,942		$	12,501		$	163

											For the Year Ended
					Unpaid						Average			Interest
		Recorded			Principal			Related			Recorded			Income
December 31, 2015		Investment			Balance			Allowance			Investment			Recognized
With no related allowance:
Commercial		$	1,352		$	2,720					$	1,848		$	87
Real estate:
Commercial			2,731			3,408						2,394			95
Residential			3,048			3,231						2,664			4
Consumer			31			31						17
Total			7,162			9,390						6,923			186
With an allowance recorded:
Commercial			795			795		$	759			1,680			40
Real estate:
Commercial			2,643			2,643			233			4,155			86
Residential			1,918			1,918			1,138			1,776			30
Consumer			117			117			117			126
Total			5,473			5,473			2,247			7,737			156
Commercial			2,147			3,515			759			3,528			127
Real estate:
Commercial			5,374			6,051			233			6,549			181
Residential			4,966			5,149			1,138			4,440			34
Consumer			148			148			117			143
Total		$	12,635		$	14,863		$	2,247		$	14,660		$	342

Summary of changes in accretible yield and nonaccretible difference of acquired loans

Year ended December 31		2017				2016				2015
Beginning Balance, January 1		$	185			$				$	60
Reclassification from Nonaccretable							554
Accretion			(185)				(369)				(60)
Charge-offs
Payments
Ending Balance, December 31		$	—			$	185			$	—

Summary loans whose terms have been modified resulting in troubled debt restructurings

				Pre-Modification			Post-Modification
		Number		Outstanding Recorded			Outstanding			Recorded
December 31, 2017		of Contracts		Investment			Recorded Investment			Investment
Commercial		2		$	885		$	885		$	864
Commercial real estate		3			721			721			700
Residential mortgage		1			64			64			64
Total		6		$	1,670		$	1,670		$	1,628
				Pre-Modification			Post-Modification
		Number		Outstanding Recorded			Outstanding			Recorded
December 31, 2016		of Contracts		Investment			Recorded Investment			Investment
Commercial		1		$	1,500		$	1,150		$	1,150
Commercial real estate
Residential mortgage		2			216			216			207
Total		3		$	1,716		$	1,366		$	1,357

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