Altabancorp (ALTA) 10-Q 7 Nov 17 2017 Q3 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	9 Months Ended
	Sep. 30, 2017	Oct. 31, 2017
Document And Entity Information [Abstract]
Entity Registrant Name	PEOPLE'S UTAH BANCORP
Entity Central Index Key	1,636,286
Document Type	10-Q
Document Period End Date	Sep. 30, 2017
Amendment Flag	false
Document Fiscal Year Focus	2,017
Trading Symbol	PUB
Document Fiscal Period Focus	Q3
Current Fiscal Year End Date	--12-31
Entity Filer Category	Accelerated Filer
Entity Common Stock, Shares Outstanding		18,025,720

UNAUDITED CONSOLIDATED BALANCE

UNAUDITED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Cash and cash equivalents:
Cash and due from banks	$ 26,986	$ 26,524
Interest bearing deposits	173,778	37,958
Federal funds sold	6,101	3,456
Total cash and cash equivalents	206,865	67,938
Investment securities:
Available-for-sale, at fair value	226,808	335,609
Held-to-maturity, at historical cost	75,808	73,512
Total investment securities	302,616	409,121
Non-marketable equity securities	1,959	1,827
Loans held for sale	10,742	20,826
Loans:
Loans held for investment	1,215,573	1,119,877
Less allowance for loan losses	(17,609)	(16,715)
Total loans held for investment, net	1,197,964	1,103,162
Premises and equipment, net	26,271	21,926
Bank-owned life insurance	20,096	19,714
Deferred income tax assets	10,234	9,799
Accrued interest receivable	6,186	5,557
Other real estate owned	325	245
Other assets	6,878	5,866
Total assets	1,790,136	1,665,981
Deposits:
Non-interest bearing deposits	527,236	443,100
Interest bearing deposits	1,000,945	981,974
Total deposits	1,528,181	1,425,074
Short-term borrowings	3,773	3,199
Accrued interest payable	259	305
Other liabilities	12,498	8,886
Total liabilities	1,544,711	1,437,464
Commitments and contingencies
Shareholders’ equity:
Preferred shares, $0.01 par value: 3,000,000 shares authorized, no shares issued
Common shares, $0.01 par value: 30,000,000 shares authorized; 17,948,347 and 17,819,538 shares issued and outstanding as of June 30, 2017 and December 31, 2016, respectively	180	178
Additional paid-in capital	70,307	68,657
Retained earnings	175,462	160,692
Accumulated other comprehensive loss	(524)	(1,010)
Total shareholders’ equity	245,425	228,517
Total liabilities and shareholders’ equity	$ 1,790,136	$ 1,665,981

UNAUDITED CONSOLIDATED BALANCE3

UNAUDITED CONSOLIDATED BALANCE SHEETS (Parenthetical) - $ / shares	Sep. 30, 2017	Dec. 31, 2016
Statement Of Financial Position [Abstract]
Preferred shares, par value	$ 0.01	$ 0.01
Preferred shares, authorized	3,000,000	3,000,000
Preferred shares, issued	0	0
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	30,000,000	30,000,000
Common stock, shares issued	18,022,651	17,819,538
Common stock, shares outstanding	18,022,651	17,819,538

UNAUDITED CONSOLIDATED STATEMEN

UNAUDITED CONSOLIDATED STATEMENTS OF INCOME - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Interest income
Interest and fees on loans	$ 18,852	$ 16,876	$ 53,633	$ 49,147
Interest and dividends on investments	1,820	1,471	5,327	4,563
Total interest income	20,672	18,347	58,960	53,710
Interest expense	754	710	2,269	2,162
Net interest income	19,918	17,637	56,691	51,548
Provision for loan losses	900	325	2,000	750
Net interest income after provision for loan losses	19,018	17,312	54,691	50,798
Non-interest income
Mortgage banking	1,686	2,244	5,625	6,269
Card processing	1,247	1,129	3,579	3,296
Service charges on deposit accounts	636	582	1,750	1,626
Net loss on sale of investment securities	(486)		(499)
Other operating	491	431	1,579	1,356
Total non-interest income	3,574	4,386	12,034	12,547
Non-interest expense
Salaries and employee benefits	8,813	7,674	24,542	23,517
Occupancy, equipment and depreciation	1,164	1,101	3,369	3,165
Data processing	650	665	1,986	2,112
Card processing	543	509	1,588	1,648
Marketing and advertising	343	301	954	760
Acquisition-related costs	484		660
FDIC premiums	135	124	391	507
Other	1,525	1,528	4,961	4,728
Total non-interest expense	13,657	11,902	38,451	36,437
Income before income tax expense	8,935	9,796	28,274	26,908
Income tax expense	2,697	3,548	9,021	9,840
Net income	$ 6,238	$ 6,248	$ 19,253	$ 17,068
Earnings per common share:
Basic	$ 0.35	$ 0.35	$ 1.07	$ 0.96
Diluted	$ 0.34	$ 0.34	$ 1.05	$ 0.94
Weighted average common shares outstanding:
Basic	17,976,066	17,764,647	17,933,010	17,711,899
Diluted	18,396,664	18,248,008	18,355,136	18,182,053

UNAUDITED CONSOLIDATED STATEME5

UNAUDITED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Statement Of Income And Comprehensive Income [Abstract]
Net income	$ 6,238	$ 6,248	$ 19,253	$ 17,068
Other comprehensive income
Unrealized holding gains/(losses) on securities available-for-sale	349	(779)	787	2,125
Income tax expense/(benefit)	(133)	298	(301)	(812)
Unrealized holding gains/(losses) on securities available-for-sale, net of tax	216	(481)	486	1,313
Total comprehensive income	$ 6,454	$ 5,767	$ 19,739	$ 18,381

UNAUDITED CONSOLIDATED STATEME6

UNAUDITED CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS' EQUITY - USD ($) $ in Thousands	Total	Common Shares	Additional Paid-in Capital	Retained Earnings	Accumulated Other Comprehensive Income (Loss)
Balance, beginning at Dec. 31, 2015	$ 209,408	$ 176	$ 67,338	$ 142,223	$ (329)
Balance, beginning, Shares at Dec. 31, 2015		17,567,154
Comprehensive income	18,381			17,068	1,313
Cash dividends	(3,718)			(3,718)
Share-based compensation	410		410
Exercise of stock options	669	$ 2	667
Exercise of stock options, Shares		223,395
Balance, ending at Sep. 30, 2016	225,150	$ 178	68,415	155,573	984
Balance, ending, Shares at Sep. 30, 2016		17,790,549
Balance, beginning at Dec. 31, 2016	$ 228,517	$ 178	68,657	160,692	(1,010)
Balance, beginning, Shares at Dec. 31, 2016	17,819,538	17,819,538
Comprehensive income	$ 19,739			19,253	486
Cash dividends	(4,483)			(4,483)
Share-based compensation	382		382
Exercise of stock options	1,270	$ 2	1,268
Exercise of stock options, Shares		203,113
Balance, ending at Sep. 30, 2017	$ 245,425	$ 180	$ 70,307	$ 175,462	$ (524)
Balance, ending, Shares at Sep. 30, 2017	18,022,651	18,022,651

UNAUDITED CONSOLIDATED STATEME7

UNAUDITED CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS' EQUITY (Parenthetical) - $ / shares	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016
Statement Of Stockholders Equity [Abstract]
Cash dividends per share	$ 0.25	$ 0.21

UNAUDITED CONSOLIDATED STATEME8

UNAUDITED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016
Cash flows from operating activities:
Net income	$ 19,253	$ 17,068
Adjustments to reconcile net income to net cash provided by operating activities:
Provision for loan losses	2,000	750
Depreciation and amortization	1,926	1,916
Deferred income taxes	(736)	(455)
Net amortization of securities discounts and premiums	2,188	2,254
Increase in cash surrender value of bank owned life insurance	(382)	(411)
Share based compensation	382	410
Other	(59)	(4)
Gain on sale of loans held for sale	(4,061)	(4,787)
Originations of loans held for sale	(172,397)	(199,991)
Proceeds from sale of loans held for sale	186,542	207,547
Net changes in:
Accrued interest receivable	(629)	(34)
Other assets	(1,012)	251
Accrued interest payable	(46)	(21)
Other liabilities	3,612	3,516
Net cash provided by operating activities	36,581	28,009
Cash flows from investing activities:
Net change in loans held for investment	(97,227)	(57,786)
Purchase of available-for-sale securities	(24,599)	(100,372)
Purchase of held-to-maturity securities	(12,198)	(1,764)
Proceeds from maturities/sales of available-for-sale securities	132,578	107,340
Proceeds from maturities of held-to-maturity securities	9,323	5,718
Purchase of premises and equipment	(6,137)	(1,864)
Proceeds from sale of other real estate owned, net of improvements	270	399
Purchase of non-marketable equity securities	(2,368)	(2,663)
Proceeds from sale of non-marketable equity securities	2,236	3,080
Net cash provided by (used in) investing activities	1,878	(47,912)
Cash flows from financing activities:
Net increase in non-interest bearing deposits	84,136	56,130
Net increase in interest bearing deposits	18,971	46,524
Proceeds related to exercise of stock options	1,270	669
Net change in short-term borrowings	574	(24,016)
Cash dividends paid	(4,483)	(3,718)
Net cash provided by financing activities	100,468	75,589
Net change in cash and cash equivalents	138,927	55,686
Cash and cash equivalents, beginning of period	67,938	42,349
Cash and cash equivalents, end of period	206,865	98,035
Supplemental disclosures of cash flow information:
Cash paid for interest	2,315	1,915
Income taxes paid	10,724	9,163
Supplemental disclosures of non-cash investing transactions:
Reclassifications from loans to other real estate owned	425	237
Unrealized gains on securities available-for-sale	$ 787	$ 2,125

Basis of Presentation

Basis of Presentation	9 Months Ended
	Sep. 30, 2017
Basis Of Presentation [Abstract]
Basis of Presentation	PEOPLE’S UTAH BANCORP AND SUBSIDIARIES NOTES TO UNAUDITED CONSOLIDATED FINANCIAL STATEMENTS Note 1 — Basis of Presentation People’s Utah Bancorp, Inc. (“PUB” or the “Company”) is a Utah corporation headquartered in American Fork, Utah. The Company’s subsidiary is People’s Intermountain Bank (“PIB” or the “Bank”), which includes two banking divisions doing business as (“dba”) Bank of American Fork (“BAF”) and Lewiston State Bank (“LSB”), an equipment leasing division dba GrowthFunding Equipment Finance and a mortgage division dba People’s Intermountain Bank Mortgage. BAF and LSB have over 100 years of history and continue to do business as registered names of PIB. The interim consolidated financial statements include the accounts of the Company together with its subsidiary Bank. All intercompany transactions and balances have been eliminated. The accompanying unaudited interim consolidated financial statements have been prepared in accordance with U.S. generally accepted accounting principles (“GAAP”) for interim financial information. Accordingly, they do not include all of the information and footnotes required by GAAP for complete financial information. In the opinion of management, the interim statements reflect all adjustments necessary for a fair presentation of the financial position, results of operations and cash flows of the Company on a consolidated basis and all such adjustments are of a normal recurring nature. These financial statements and the accompanying notes should be read in conjunction with the Company’s audited financial statements for the year ended December 31, 2016, which are included in the Company’s 2016 Form 10-K. Operating results for the three and nine months ended September 30, 2017 are not necessarily indicative of the results that may be expected for the year ending December 31, 2017, or any other period. The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reported period. Actual results could differ from those estimates. Material estimates that are particularly susceptible to significant change in the near term relate to the determination of the allowance for loan losses, the valuation of real estate acquired through foreclosure, deferred tax assets, and share-based compensation. Earnings per share — Basic earnings per common share represents income available to common shareholders divided by the weighted-average number of common shares outstanding during the period. Diluted earnings per share reflect additional common shares that would have been outstanding if dilutive potential common shares had been issued. Potential common shares include shares that may be issued by the Company for outstanding stock options determined using the treasury stock method and for all outstanding restricted stock units (“RSU”). Earnings per common share have been computed based on the following: Three Months Ended Nine Months Ended September 30, September 30, (Dollars in thousands, except share and per share data) 2017 2016 2017 2016 Numerator Net income $ 6,238 $ 6,248 $ 19,253 $ 17,068 Denominator Weighted-average number of common shares outstanding 17,976,066 17,764,647 17,933,010 17,711,899 Incremental shares assumed for stock options and RSUs 420,598 483,361 422,126 470,154 Weighted-average number of dilutive shares outstanding 18,396,664 18,248,008 18,355,136 18,182,053 Basic earnings per common share $ 0.35 $ 0.35 $ 1.07 $ 0.96 Diluted earnings per common share $ 0.34 $ 0.34 $ 1.05 $ 0.94 Note 1 — Basis of Presentation – Continued Reclassificat ions — Certain amounts in the prior period’s financial statements have been reclassified to conform to the current period’s presentation. Impact of Recent Authoritative Accounting Guidance —The Accounting Standards Codification™ (“ASC”) is the Financial Accounting Standards Board’s (“FASB”) officially recognized source of authoritative GAAP applicable to all public and non-public non-governmental entities. Rules and interpretive releases of the SEC under the authority of the federal securities laws are also sources of authoritative GAAP for us as an SEC registrant. All other accounting literature is non-authoritative. In February 2016, FASB amended FASB ASC Topic 842, Leases In January 2016, FASB amended FASB ASC Topic 825, Financial Instruments In May 2014, FASB amended FASB ASC Topic 606, Revenue from Contracts with Customers Note 1 — Basis of Presentation – Continued In June 2016, FASB amended FASB ASC Topic 326, Financial Instruments - Credit Losses. The amendments replace the current incurred loss model with a methodology that reflects expected credit losses over the life of the loan and requires consideration of a broader range of reasonable and supportable information to calculate credit loss estimates. The amendments are effective for public business entities for the first interim and annual reporting periods beginning after December 15, 2019. The Company is currently evaluating the impact of these amendments to the Company’s financial position and results of operations and currently does not know or cannot reasonably quantify the impact of the adoption of the amendments as a result of the complexity and extensive changes from the amendments. The ALLL is a material estimate of the Company and given the change from an incurred loss model to a methodology that considers the credit loss over the life of the loan, there is the potential for an increase in the ALLL at adoption date. The Company is anticipating a significant change in the processes and procedures to calculate the ALLL, including changes in assumptions and estimates to consider expected credit losses over the life of the loan versus the current accounting practice that utilizes the incurred loss model. The Company will also develop new procedures for determining an allowance for credit losses relating to held-to-maturity investment securities. In addition, the current accounting policy and procedures for other-than-temporary impairment on available-for-sale investment securities will be replaced with an allowance approach. The Company is developing and implementing processes and procedures during the next two years to ensure it is fully compliant with the amendments at adoption date. For additional information on the ALLL see Note 3 In March 2016, FASB issued ASU 2016-09, Compensation - Stock Compensation

Investment Securities

Investment Securities	9 Months Ended
	Sep. 30, 2017
Investments Debt And Equity Securities [Abstract]
Investment Securities	Note 2 — Investment Securities Amortized cost and estimated fair value of investment securities available-for-sale are summarized as follows: Gross Unrealized Losses Less 12 Gross Than Months Amortized Unrealized 12 or Fair (Dollars in thousands) Cost Gains Months Longer Value As of September 30, 2017 U.S. Government-sponsored securities $ 50,950 $ 151 $ (42 ) $ (228 ) $ 50,831 Municipal securities 16,818 307 (11 ) (12 ) 17,102 Mortgage-backed securities 154,889 816 (725 ) (863 ) 154,117 Corporate securities 5,000 — — (242 ) 4,758 $ 227,657 $ 1,274 $ (778 ) $ (1,345 ) $ 226,808 As of December 31, 2016 U.S. Government-sponsored securities $ 119,202 $ 71 $ (669 ) $ (1 ) $ 118,603 Municipal securities 25,176 401 (58 ) — 25,519 Mortgage-backed securities 182,867 679 (1,111 ) (614 ) 181,821 Corporate securities 10,000 28 (32 ) (330 ) 9,666 $ 337,245 $ 1,179 $ (1,870 ) $ (945 ) $ 335,609 Note 2 — Investment Securities – continued Amortized cost and estimated fair value of investment securities held-to-maturity are as follows: Gross Unrealized Losses Less 12 Gross Than Months Amortized Unrealized 12 or Fair (Dollars in thousands) Cost Gains Months Longer Value As of September 30, 2017 Municipal securities $ 75,808 $ 475 $ (177 ) $ (13 ) $ 76,093 As of December 31, 2016 Municipal securities $ 73,512 $ 105 $ (579 ) $ (38 ) $ 73,000 The amortized cost and estimated fair value of investment securities that are available-for-sale and held-to-maturity at September 30, 2017, by contractual maturity, are as follows: Available-For-Sale Held-To-Maturity Amortized Fair Amortized Fair (Dollars in thousands) Cost Value Cost Value Securities maturing in: One year or less $ 7,326 $ 7,360 $ 6,956 $ 6,957 After one year through five years 53,637 53,610 45,381 45,552 After five years through ten years 79,059 78,391 16,785 16,881 After ten years 87,635 87,447 6,686 6,703 $ 227,657 $ 226,808 $ 75,808 $ 76,093 Actual maturities may differ from contractual maturities because issuers may have the right to call obligations with or without penalties and other securities may experience pre-payments. As of September 30, 2017, the Company held 201 investment securities with fair value less than amortized cost. Management evaluated these investment securities and determined that the decline in value is temporary and related to the change in market interest rates since purchase. The decline in value is not related to any company or industry specific event. The Company anticipates full recovery of the amortized cost with respect to these securities at maturity, or sooner in the event of a more favorable market interest rate environment.

Loans and Allowance for Loan Lo

Loans and Allowance for Loan Losses	9 Months Ended
	Sep. 30, 2017
Receivables [Abstract]
Loans and Allowance for Loan Losses	Note 3 — Loans and Allowance for Loan Losses Loans are summarized as follows: September 30, December 31, (Dollars in thousands) 2017 2016 Loans held for investment: Commercial real estate loans: Real estate term $ 627,467 $ 582,029 Construction and land development 281,545 240,120 Total commercial real estate loans 909,012 822,149 Commercial and industrial loans 222,674 213,260 Consumer loans: Residential and home equity 73,383 72,959 Consumer and other 15,099 15,678 Total consumer loans 88,482 88,637 Total gross loans 1,220,168 1,124,046 Less: Net deferred loan fees (4,595 ) (4,169 ) Total loans held for investment 1,215,573 1,119,877 Less: allowance for loan losses (17,609 ) (16,715 ) Total loans held for investment, net $ 1,197,964 $ 1,103,162 Changes in the allowance for loan losses (“ALLL”) are as follows: Three Months Ended September 30, 2017 Real Construction Commercial Residential Consumer Estate and Land and and and (Dollars in thousands) Term Development Industrial Home Equity Other Total Balance at beginning of period $ 7,157 $ 5,077 $ 4,489 $ 503 $ 45 $ 17,271 Additions: Provisions for loan losses (303 ) 409 770 (44 ) 68 900 Deductions: Gross loan charge-offs — — (621 ) — (46 ) (667 ) Recoveries 23 2 46 7 27 105 Net loan charge-offs 23 2 (575 ) 7 (19 ) (562 ) Balance at end of period $ 6,877 $ 5,488 $ 4,684 $ 466 $ 94 $ 17,609 Three Months Ended September 30, 2016 Real Construction Commercial Residential Consumer Estate and Land and and and (Dollars in thousands) Term Development Industrial Home Equity Other Total Balance at beginning of period $ 6,869 $ 4,725 $ 3,768 $ 628 $ 162 $ 16,152 Additions: Provisions for loan losses (426 ) 413 411 (24 ) (49 ) 325 Deductions: Gross loan charge-offs — — (558 ) — (57 ) (615 ) Recoveries 3 148 81 8 79 319 Net loan charge-offs 3 148 (477 ) 8 22 (296 ) Balance at end of period $ 6,446 $ 5,286 $ 3,702 $ 612 $ 135 $ 16,181 Note 3 — Loans and Allowance for Loan Losses – Continued Nine Months Ended September 30, 2017 Real Construction Commercial Residential Consumer Estate and Land and and and (Dollars in thousands) Term Development Industrial Home Equity Other Total Balance at beginning of period $ 6,770 $ 5,449 $ 3,718 $ 617 $ 161 $ 16,715 Additions: Provisions for loan losses 253 (42 ) 1,736 40 13 2,000 Deductions: Gross loan charge-offs (350 ) — (893 ) (338 ) (159 ) (1,740 ) Recoveries 204 81 123 147 79 634 Net loan charge-offs (146 ) 81 (770 ) (191 ) (80 ) (1,106 ) Balance at end of period $ 6,877 $ 5,488 $ 4,684 $ 466 $ 94 $ 17,609 Nine Months Ended September 30, 2016 Real Construction Commercial Residential Consumer Estate and Land and and and (Dollars in thousands) Term Development Industrial Home Equity Other Total Balance at beginning of period $ 6,783 $ 3,984 $ 3,941 $ 603 $ 246 $ 15,557 Additions: Provisions for loan losses (349 ) 1,108 202 (80 ) (131 ) 750 Deductions: Gross loan charge-offs — — (630 ) — (177 ) (807 ) Recoveries 12 194 189 89 197 681 Net loan charge-offs 12 194 (441 ) 89 20 (126 ) Balance at end of period $ 6,446 $ 5,286 $ 3,702 $ 612 $ 135 $ 16,181 Non-accrual loans are summarized as follows: September 30, December 31, (Dollars in thousands) 2017 2016 Non-accrual loans, not troubled debt restructured: Real estate term $ 2,193 $ 2,386 Construction and land development 45 378 Commercial and industrial 1,150 1,211 Residential and home equity — 142 Consumer and other 5 14 Total non-accrual loans, not troubled debt restructured 3,393 4,131 Troubled debt restructured loans, non-accrual: Real estate term 378 808 Construction and land development 352 396 Commercial and industrial — — Residential and home equity — — Consumer and other — — Total troubled debt restructured loans, non-accrual 730 1,204 Total non-accrual loans $ 4,123 $ 5,335 Note 3 — Loans and Allowance for Loan Losses – Continued Troubled debt restructured loans are summarized as follows: September 30, December 31, (Dollars in thousands) 2017 2016 Accruing troubled debt restructured loans $ 3,938 $ 5,572 Non-accrual troubled debt restructured loans 730 1,204 Total troubled debt restructured loans $ 4,668 $ 6,776 A restructured loan is considered a troubled debt restructured loan (“TDR”), if the Company, for economic or legal reasons related to the debtor’s financial difficulties, grants a concession in terms or a below-market interest rate to the debtor that it would not otherwise consider. Each TDR loan is separately negotiated with the borrower and includes terms and conditions that reflect the borrower’s prospective ability to service the debt as modified. Current and past due loans held for investment (accruing and non-accruing) are summarized as follows: September 30, 2017 30-89 Days 90+ Days Total Total (Dollars in thousands) Current Past Due Past Due Non-accrual Past Due Loans Commercial real estate: Real estate term $ 624,516 $ 380 $ — $ 2,571 $ 2,951 $ 627,467 Construction and land development 280,289 859 — 397 1,256 281,545 Total commercial real estate 904,805 1,239 — 2,968 4,207 909,012 Commercial and industrial 221,209 315 — 1,150 1,465 222,674 Consumer: Residential and home equity 73,199 184 — — 184 73,383 Consumer and other 14,811 265 18 5 288 15,099 Total consumer 88,010 449 18 5 472 88,482 Total gross loans $ 1,214,024 $ 2,003 $ 18 $ 4,123 $ 6,144 $ 1,220,168 December 31, 2016 30-89 Days 90+ Days Total Total (Dollars in thousands) Current Past Due Past Due Non-accrual Past Due Loans Commercial real estate: Real estate term $ 577,134 $ 1,701 $ — $ 3,194 $ 4,895 $ 582,029 Construction and land development 237,433 1,913 — 774 2,687 240,120 Total commercial real estate 814,567 3,614 — 3,968 7,582 822,149 Commercial and industrial 211,143 906 — 1,211 2,117 213,260 Consumer: Residential and home equity 71,719 1,098 — 142 1,240 72,959 Consumer and other 15,168 474 22 14 510 15,678 Total consumer 86,887 1,572 22 156 1,750 88,637 Total gross loans $ 1,112,597 $ 6,092 $ 22 $ 5,335 $ 11,449 $ 1,124,046 Credit Quality Indicators: In addition to past due and non-accrual criteria, the Company also analyzes loans using a loan grading system. Performance-based grading follows the Company’s definitions of Pass, Special Mention, Substandard and Doubtful, which are consistent with published definitions of regulatory risk classifications. Note 3 — Loans and Allowance for Loan Losses – Continued Definitions of Pass, Special Mention, Substandard and Doubtful are summarized as follows: Pass : A Pass asset is higher quality and does not fit any of the other categories described below. The likelihood of loss is considered remote. Special Mention : A Special Mention asset has potential weaknesses that may be temporary or, if left uncorrected, may result in a loss. While concerns exist, the Company is currently protected and loss is considered unlikely and not imminent. Substandard : A Substandard asset is inadequately protected by the current sound net worth and paying capacity of the obligor or of the collateral pledged, if any. Assets so classified have well defined weaknesses and are characterized by the distinct possibility that the Company may sustain some loss if deficiencies are not corrected. Doubtful : A Doubtful asset has all the weaknesses inherent in a Substandard asset with the added characteristics that the weaknesses make collection or liquidation in full highly questionable. For Consumer loans, the Company generally assigns internal risk grades similar to those described above based on payment performance. Outstanding loan balances (accruing and non-accruing) categorized by these credit quality indicators are summarized as follows: September 30, 2017 Special Substandard Total Total (Dollars in thousands) Pass Mention and Doubtful Loans Allowance Commercial real estate: Real estate term $ 603,905 $ 11,481 $ 12,081 $ 627,467 $ 6,877 Construction and land development 273,580 4,686 3,279 281,545 5,488 Total commercial real estate 877,485 16,167 15,360 909,012 12,365 Commercial and industrial 208,849 5,797 8,028 222,674 4,684 Consumer loans: Residential and home equity 70,627 1,705 1,051 73,383 466 Consumer and other 14,953 48 98 15,099 94 Total consumer 85,580 1,753 1,149 88,482 560 Total $ 1,171,914 $ 23,717 $ 24,537 $ 1,220,168 $ 17,609 December 31, 2016 Special Substandard Total Total (Dollars in thousands) Pass Mention and Doubtful Loans Allowance Commercial real estate: Real estate term $ 565,550 $ 10,609 $ 5,870 $ 582,029 $ 6,770 Construction and land development 234,359 2,222 3,539 240,120 5,449 Total commercial real estate 799,909 12,831 9,409 822,149 12,219 Commercial and industrial 205,933 2,266 5,061 213,260 3,718 Consumer loans: Residential and home equity 69,287 1,869 1,803 72,959 617 Consumer and other 15,542 — 136 15,678 161 Total consumer 84,829 1,869 1,939 88,637 778 Total $ 1,090,671 $ 16,966 $ 16,409 $ 1,124,046 $ 16,715 Note 3 — Loans and Allowance for Loan Losses – Continued The ALLL and outstanding loan balances reviewed according to the Company’s impairment method are summarized as follows: September 30, 2017 Real Construction Commercial Residential Consumer Estate and Land and and and (Dollars in thousands) Term Development Industrial Home Equity Other Total Allowance for loan losses: Individually evaluated for impairment $ 59 $ 67 $ 396 $ 71 $ — $ 593 Collectively evaluated for impairment 6,818 5,421 4,288 395 94 17,016 Total $ 6,877 $ 5,488 $ 4,684 $ 466 $ 94 $ 17,609 Outstanding loan balances: Individually evaluated for impairment $ 5,752 $ 1,800 $ 2,882 $ 632 $ — $ 11,066 Collectively evaluated for impairment 621,715 279,745 219,792 72,751 15,099 1,209,102 Total gross loans $ 627,467 $ 281,545 $ 222,674 $ 73,383 $ 15,099 $ 1,220,168 December 31, 2016 Real Construction Commercial Residential Consumer Estate and Land and and and (Dollars in thousands) Term Development Industrial Home Equity Other Total Allowance for loan losses: Individually evaluated for impairment $ 189 $ 67 $ 323 $ 75 $ — $ 654 Collectively evaluated for impairment 6,581 5,382 3,395 542 161 16,061 Total $ 6,770 $ 5,449 $ 3,718 $ 617 $ 161 $ 16,715 Outstanding loan balances: Individually evaluated for impairment $ 5,778 $ 2,995 $ 6,045 $ 1,476 $ — $ 16,294 Collectively evaluated for impairment 576,251 237,125 207,215 71,483 15,678 1,107,752 Total gross loans $ 582,029 $ 240,120 $ 213,260 $ 72,959 $ 15,678 $ 1,124,046 Information on impaired loans is summarized as follows: September 30, 2017 Recorded Investment Unpaid Total Principal With No With Recorded Related (Dollars in thousands) Balance Allowance Allowance Investment Allowance Commercial real estate: Real estate term $ 5,838 $ 4,198 $ 1,554 $ 5,752 $ 59 Construction and land development 2,754 1,603 197 1,800 67 Total commercial real estate 8,592 5,801 1,751 7,552 126 Commercial and industrial 4,276 1,674 1,208 2,882 396 Consumer loans: Residential and home equity 632 230 402 632 71 Consumer and other — — — — — Total consumer 632 230 402 632 71 Total $ 13,500 $ 7,705 $ 3,361 $ 11,066 $ 593 Note 3 — Loans and Allowance for Loan Losses – Continued December 31, 2016 Recorded Investment Unpaid Total Principal With No With Recorded Related (Dollars in thousands) Balance Allowance Allowance Investment Allowance Commercial real estate: Real estate term $ 5,864 $ 2,979 $ 2,799 $ 5,778 $ 189 Construction and land development 3,949 2,790 205 2,995 67 Total commercial real estate 9,813 5,769 3,004 8,773 256 Commercial and industrial 6,937 4,458 1,587 6,045 323 Consumer loans: Residential and home equity 1,476 1,071 405 1,476 75 Consumer and other — — — — — Total consumer 1,476 1,071 405 1,476 75 Total $ 18,226 $ 11,298 $ 4,996 $ 16,294 $ 654 The interest income recognized on impaired loans was as follows: Three Months Ended September 30, 2017 September 30, 2016 Average Interest Average Interest Recorded Income Recorded Income (Dollars in thousands) Investment Recognition Investment Recognition Commercial real estate: Real estate term $ 6,648 $ 100 $ 8,990 $ 65 Construction and land development 1,880 73 3,528 54 Total commercial real estate 8,528 173 12,518 119 Commercial and industrial 4,659 103 6,353 88 Consumer loans: Residential and home equity 1,052 26 1,971 23 Consumer and other — — 15 1 Total consumer 1,052 26 1,986 24 Total $ 14,239 $ 302 $ 20,857 $ 231 Nine Months Ended September 30, 2017 September 30, 2016 Average Interest Average Interest Recorded Income Recorded Income (Dollars in thousands) Investment Recognition Investment Recognition Commercial real estate: Real estate term $ 5,765 $ 118 $ 9,067 $ 218 Construction and land development 2,397 104 3,752 156 Total commercial real estate 8,162 222 12,819 374 Commercial and industrial 4,464 148 6,944 273 Consumer loans: Residential and home equity 1,054 37 1,977 57 Consumer and other — — 15 1 Total consumer 1,054 37 1,992 58 Total $ 13,680 $ 407 $ 21,755 $ 705 Note 3 — Loans and Allowance for Loan Losses – Concluded Loans and Deposits to affiliates — The Company has entered into loan transactions with certain directors, affiliated companies and executive committee members (“affiliates”). Such transactions were made in the ordinary course of business on substantially the same terms and conditions, including interest rates and collateral, as those prevailing at the same time for comparable transactions with other customers, and did not, in the opinion of management, involve more than normal credit risk or present other unfavorable features. Total outstanding loans with affiliates were approximately $3,366,000 and $330,000 as of September 30, 2017 and December 31, 2016, respectively. Available lines of credit for loans and credit cards to affiliates were approximately $548,000 as of September 30, 2017. Deposits from affiliates were $7.9 million and $7.8 million as of September 30, 2017 and December 31, 2016, respectively.

Commitments and Contingencies

Commitments and Contingencies	9 Months Ended
	Sep. 30, 2017
Commitments And Contingencies Disclosure [Abstract]
Commitments and Contingencies	Note 4 — Commitments and Contingencies Litigation contingencies— The Company is involved in various claims, legal actions and complaints which arise in the ordinary course of business. In the Company’s opinion, all such matters are adequately covered by insurance, are without merit or are of such kind, or involve such amounts, that unfavorable disposition would not have a material adverse effect on the financial condition or results of operations of the Company. Commitments to extend credit — In the normal course of business, the Company has outstanding commitments and contingent liabilities, such as commitments to extend credit and unused credit card lines, which are not included in the accompanying consolidated financial statements. The Company’s exposure to credit loss in the event of non-performance by other parties to the financial instruments for commitments to extend credit and unused credit card lines is represented by the contractual or notional amount of those instruments. The Company uses the same credit policies in making such commitments as it does for instruments that are included in the consolidated balance sheets. Contractual amounts of off-balance sheet financial instruments were as follows: September 30, December 31, (Dollars in thousands) 2017 2016 Commitments to extend credit, including unsecured commitments of $12,130 and $11,230 as of September 30, 2017 and December 31, 2016, respectively $ 543,604 $ 445,645 Stand-by letters of credit and bond commitments, including unsecured commitments of $609 and $660 as of September 30, 2017 and December 31, 2016, respectively 25,722 29,332 Unused credit card lines, all unsecured 25,361 25,803 Commitments to extend credit are agreements to lend to a customer as long as there is no violation of any condition established in the contract. Commitments generally have fixed expiration dates or other termination clauses and may require payment of a fee. The commitments to extend credit may expire without being drawn upon. Therefore, the total commitment amounts do not necessarily represent future cash requirements. The amount of collateral obtained, if it is deemed necessary by the Company, is based on management’s credit evaluation of the customer. Unused credit card lines are commitments for possible future extensions of credit to existing customers. These lines of credit are uncollateralized and usually do not contain a specified maturity date and may not be drawn upon to the total extent to which the Company is committed.

Fair Value

Fair Value	9 Months Ended
	Sep. 30, 2017
Fair Value Disclosures [Abstract]
Fair Value	Note 5 — Fair Value Fair value measurements — Fair value represents the exchange price that would be received for an asset or paid to transfer a liability (an exit price) in the principal or most advantageous market for the asset or liability in an orderly transaction between market participants on the measurement date. To measure fair value, GAAP has established a hierarchy which requires an entity to maximize the use of observable inputs and minimize the use of unobservable inputs. This hierarchy uses three levels of inputs to measure the fair value of assets and liabilities as follows: Level 1 Quoted prices in active markets for identical assets or liabilities. Level 2 Observable inputs other than Level 1 including quoted prices for similar assets or liabilities, quoted prices in less active markets, or other observable inputs that can be corroborated by observable market data. Level 3 Unobservable inputs supported by little or no market activity for financial instruments whose value is determined using pricing models, discounted cash flow methodologies, or similar techniques, as well as instruments for which the determination of fair value requires significant management judgment or estimation. The following is a description of the valuation methodologies used for instruments measured at fair value, as well as the general classification of such instruments pursuant to the valuation methodology: Investment securities, available-for-sale — Where quoted prices are available in an active market, securities are classified within Level 1 of the hierarchy. Level 1 includes securities that have quoted prices in an active market for identical assets. If quoted market prices are not available, then fair values are estimated using pricing models, quoted prices of securities with similar characteristics or discounted cash flows, and accordingly, are classified as Level 2 or 3. The Company has categorized its available-for-sale investment securities as Level 1 or 2. Impaired loans and other real estate owned — Fair value applies to loans and other real estate owned measured for impairment. Impaired loans are measured at the fair value of the loan’s collateral (if collateral dependent) or net present value of future cash flows (if not collateral dependent). Fair value of the loan’s collateral is determined by appraisals or independent valuation which is then adjusted for the cost related to liquidation of the collateral. The Company has categorized its impaired loans and other real estate owned as Level 2. Assets measured at fair value are summarized as follows: (Dollars in thousands) Level 1 Level 2 Level 3 Total As of September 30, 2017 Fair valued on a recurring basis: Investment securities available-for-sale $ 1,000 $ 225,808 $ — $ 226,808 Fair valued on a non-recurring basis: Impaired loans — 2,768 — 2,768 Other real estate owned — 325 — 325 As of December 31, 2016 Fair valued on a recurring basis: Investment securities available-for-sale $ 1,008 $ 334,601 $ — $ 335,609 Fair valued on a non-recurring basis: Impaired loans — 4,342 — 4,342 Note 5 — Fair Value - Continued Fair value of financial instruments — The following table summarizes carrying amounts, estimated fair values and assumptions used to estimate fair values of financial instruments: Carrying Estimated (Dollars in thousands) Value Fair Value As of September 30, 2017 Financial Assets: Net loans held for investment $ 1,197,964 $ 1,198,362 Financial Liabilities: Interest bearing deposits 1,000,945 1,000,496 As of December 31, 2016 Financial Assets: Net loans held for investment $ 1,103,162 $ 1,101,890 Financial Liabilities: Interest bearing deposits 981,974 982,380 The above summary excludes financial assets and liabilities for which carrying value approximates fair value. For financial assets, these include cash and cash equivalents, held-to-maturity securities (see Note 2), loans held for sale, bank-owned life insurance, accrued interest receivable, and FHLB stock. For financial liabilities, these include non-interest bearing deposits, short-term borrowings, and accrued interest payable. Also excluded from the summary are financial instruments recorded at fair value on a recurring basis, as previously described. Fair values of off-balance sheet commitments such as lending commitments, standby letters of credit and guarantees are based on fees currently charged to enter into similar agreements, taking into account the remaining terms of the agreements and the counterparties’ credit standing. The fair value of the fees as of September 30, 2017 and December 31, 2016 were insignificant. The following methods and assumptions were used to estimate the fair value of financial instruments: Net loans held for investment — The fair value is estimated by discounting the future cash flows and estimated prepayments using the current rates at which similar loans would be made to borrowers with similar credit ratings and for the same remaining term. Some loan types were valued at carrying value because of their floating rate or expected maturity characteristics. Interest bearing deposits — The fair value of interest bearing deposits is estimated by discounting the estimated future cash flows using the rates currently offered for deposits with similar remaining maturities. Fair value estimates are made at a specific point in time, based on relevant market information and information about the financial instrument. Fair value estimates are based on judgments regarding future expected loss experience, current economic conditions, risk characteristics of various financial instruments, and other factors. These estimates are subjective in nature and involve uncertainties and matters of significant judgment and, therefore, cannot be determined with precision. Changes in the above methodologies and assumptions could significantly affect the estimates. Further, certain financial instruments and all non-financial instruments are excluded from the applicable disclosure requirements. Therefore, the fair value amounts shown in the table do not, by themselves, represent the underlying value of the Company as a whole.

Income Taxes

Income Taxes	9 Months Ended
	Sep. 30, 2017
Income Tax Disclosure [Abstract]
Income Taxes	Note 6 — Income Taxes Income tax expense was $2.7 million and $3.5 million for the three months ended September 30, 2017 and 2016, respectively. The Company’s effective tax rate for the third quarter of 2017 was 30.2% compared with 36.2% in the third quarter of 2016. The tax rate in the third quarter of 2017 is lower than the same quarter in 2016 due primarily to lower pre-tax income and tax-deductible stock compensation expense. Income tax expense was $9.0 million and $9.8 million for the nine months ended September 30, 2017 and 2016, respectively. The Company’s effective tax rate was 31.9% and 36.6% for the nine months ended September 30, 2017 and 2016, respectively. The tax rate in 2017 is lower than 2016 due primarily to tax-deductible stock compensation expense and the reversal of a liability related to an unrecognized tax benefit totaling approximately $1.2 million in taxable benefits.

Regulatory Capital Matters

Regulatory Capital Matters	9 Months Ended
	Sep. 30, 2017
Banking And Thrift [Abstract]
Regulatory Capital Matters	Note 7 — Regulatory Capital Matters The consolidated Tier 1 Leverage ratio increased from 13.71% at December 31, 2016 to 14.07% as of September 30, 2017. Federal Reserve Board Regulations require maintenance of certain minimum reserve balances based on certain average deposits which as of September 30, 2017 and December 31, 2016 were $11.7 million and $9.1 million, respectively. The Company’s Board of Directors may declare a cash or stock dividend out of retained earnings provided the regulatory minimum capital ratios are met. The Company plans to maintain capital ratios that meet the well-capitalized standards per the regulations and, therefore, plans to limit dividends to amounts that are appropriate to maintain those well-capitalized regulatory capital ratios.

Incentive Share-Based Plan and

Incentive Share-Based Plan and Other Employee Benefits	9 Months Ended
	Sep. 30, 2017
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Incentive Share-Based Plan and Other Employee Benefits	Note 8 — Incentive Share-Based Plan and Other Employee Benefits In June 2014, the Board of Directors (“Board”) and shareholders of the Company approved a share-based incentive plan (“the Plan”). The Plan provides for various share-based incentive awards including incentive share-based options, non-qualified share-based options, restricted shares, and stock appreciation rights to be granted to officers, directors and other key employees. The maximum aggregate number of shares that may be issued under the Plan is 800,000 common shares. The share-based awards are granted to participants under the Plan at a price not less than the fair value on the date of grant and for terms of up to ten years. The Plan also allows for granting of share-based awards to directors and consultants who are not employees of the Company. During the nine months ended September 30, 2017, the Company granted options for the purchase of 8,892 common shares, which have a weighted average exercise price of $26.75 per share and a weighted average fair value as of the date of grant of $4.074 per share. Additionally, the Company granted 16,061 restricted stock units (“RSU”) at a weighted-average fair value of $27.36 per unit. The options and RSU’s generally vest over periods from one to three years. The Company recorded share-based compensation expense of $382,000 and $410,000 for the nine months ended September 30, 2017 and 2016, respectively.

Announced Transactions

Announced Transactions	9 Months Ended
	Sep. 30, 2017
Business Combinations [Abstract]
Announced Transactions	Note 9 — Announced Transactions Town & Country Bank: On May 31, 2017, the Company entered into a definitive agreement to acquire Town & Country Bank, Inc. (“Town & Country Bank”), a community based bank in St. George Utah, whereby Town & Country Bank will be merged with and into PIB, a wholly owned subsidiary of PUB. Under the terms of the agreement, each outstanding share is expected to receive $4.28 in cash, including cash held in escrow, and 0.2917 PUB common shares. Town & Country Bank shareholders are expected to also receive additional cash distributions at closing, subject to certain closing conditions. $2.0 million of the cash to be paid to shareholders will be held in escrow at closing pending the resolution of certain contingencies. The transaction was unanimously approved by the boards of directors of both companies. The transaction is expected to close in the fourth quarter of 2017 subject to Town & Country Bank’s shareholder approval and the satisfaction of other customary closing conditions. The Company’s primary reasons for the transaction are to solidify its market share in the St. George, Utah market, expand its customer base to enhance total revenues and leverage operating costs through economies of scale. Note 9 — Announced Transactions - Continued Town & Country Bank currently operates one branch in St. George and one loan production office in Sandy, Utah. The Town & Country Bank office and PIB’s Bank of American Fork branch in St. George are expected to be consolidated in December 2017. Upon consolidation, the combined division will operate under the name “People’s Town & Country Bank.” Bank of American Fork branches in other areas will not be affected by this St. George-area name change. Town & Country Bank’s Sandy loan production office is expected to be consolidated with the current Bank of American Fork Sandy branch and will operate under the name Bank of American Fork. This merger is part of a larger bank-wide strategy to establish a community-banking network with local names throughout Utah and potentially in adjoining states. As of September 30, 2017, Town & Country Bank had total assets of $127.2 million, gross loans of $118.3 million and total deposits of $126.4 million. Utah Branches of Banner Bank: PUB’s banking subsidiary, PIB, successfully completed the acquisition of $255 million in loans and seven Utah branch locations with approximately $160 million in deposits from Banner Corporation’s banking subsidiary, Banner Bank on October 6, 2017. PIB paid a deposit premium of $13.8 million based on average deposits at closing. PIB has also successfully completed the conversion of these branches onto PIB’s core banking platform. The seven branches are located in Salt Lake City, Provo, South Jordan, Woods Cross, Orem, Salem, and Springville. The Woods Cross and Orem branches were consolidated into the existing Bank of American Fork Bountiful and Orem branches, respectively. PIB will operate the branches under the name of Bank of American Fork, a division of PIB.

Basis of Presentation (Tables)

Basis of Presentation (Tables)	9 Months Ended
	Sep. 30, 2017
Basis Of Presentation [Abstract]
Schedule of Earnings Per Common Share	Earnings per common share have been computed based on the following: Three Months Ended Nine Months Ended September 30, September 30, (Dollars in thousands, except share and per share data) 2017 2016 2017 2016 Numerator Net income $ 6,238 $ 6,248 $ 19,253 $ 17,068 Denominator Weighted-average number of common shares outstanding 17,976,066 17,764,647 17,933,010 17,711,899 Incremental shares assumed for stock options and RSUs 420,598 483,361 422,126 470,154 Weighted-average number of dilutive shares outstanding 18,396,664 18,248,008 18,355,136 18,182,053 Basic earnings per common share $ 0.35 $ 0.35 $ 1.07 $ 0.96 Diluted earnings per common share $ 0.34 $ 0.34 $ 1.05 $ 0.94

Investment Securities (Tables)

Investment Securities (Tables)	9 Months Ended
	Sep. 30, 2017
Investments Debt And Equity Securities [Abstract]
Summary of Amortized Cost and Estimated Fair Value of Investment Securities Available for Sale	Amortized cost and estimated fair value of investment securities available-for-sale are summarized as follows: Gross Unrealized Losses Less 12 Gross Than Months Amortized Unrealized 12 or Fair (Dollars in thousands) Cost Gains Months Longer Value As of September 30, 2017 U.S. Government-sponsored securities $ 50,950 $ 151 $ (42 ) $ (228 ) $ 50,831 Municipal securities 16,818 307 (11 ) (12 ) 17,102 Mortgage-backed securities 154,889 816 (725 ) (863 ) 154,117 Corporate securities 5,000 — — (242 ) 4,758 $ 227,657 $ 1,274 $ (778 ) $ (1,345 ) $ 226,808 As of December 31, 2016 U.S. Government-sponsored securities $ 119,202 $ 71 $ (669 ) $ (1 ) $ 118,603 Municipal securities 25,176 401 (58 ) — 25,519 Mortgage-backed securities 182,867 679 (1,111 ) (614 ) 181,821 Corporate securities 10,000 28 (32 ) (330 ) 9,666 $ 337,245 $ 1,179 $ (1,870 ) $ (945 ) $ 335,609
Summary of Amortized Cost and Estimated Fair Value of Investment Securities Held-to-Maturity	Note 2 — Investment Securities – continued Amortized cost and estimated fair value of investment securities held-to-maturity are as follows: Gross Unrealized Losses Less 12 Gross Than Months Amortized Unrealized 12 or Fair (Dollars in thousands) Cost Gains Months Longer Value As of September 30, 2017 Municipal securities $ 75,808 $ 475 $ (177 ) $ (13 ) $ 76,093 As of December 31, 2016 Municipal securities $ 73,512 $ 105 $ (579 ) $ (38 ) $ 73,000
Amortized Cost and Estimated Fair Value of Investment Securities that are Available-for-Sale and Held-to-Maturity by Contractual Maturity	The amortized cost and estimated fair value of investment securities that are available-for-sale and held-to-maturity at September 30, 2017, by contractual maturity, are as follows: Available-For-Sale Held-To-Maturity Amortized Fair Amortized Fair (Dollars in thousands) Cost Value Cost Value Securities maturing in: One year or less $ 7,326 $ 7,360 $ 6,956 $ 6,957 After one year through five years 53,637 53,610 45,381 45,552 After five years through ten years 79,059 78,391 16,785 16,881 After ten years 87,635 87,447 6,686 6,703 $ 227,657 $ 226,808 $ 75,808 $ 76,093

Loans and Allowance for Loan 20

Loans and Allowance for Loan Losses (Tables)	9 Months Ended
	Sep. 30, 2017
Receivables [Abstract]
Summary of Loans	Loans are summarized as follows: September 30, December 31, (Dollars in thousands) 2017 2016 Loans held for investment: Commercial real estate loans: Real estate term $ 627,467 $ 582,029 Construction and land development 281,545 240,120 Total commercial real estate loans 909,012 822,149 Commercial and industrial loans 222,674 213,260 Consumer loans: Residential and home equity 73,383 72,959 Consumer and other 15,099 15,678 Total consumer loans 88,482 88,637 Total gross loans 1,220,168 1,124,046 Less: Net deferred loan fees (4,595 ) (4,169 ) Total loans held for investment 1,215,573 1,119,877 Less: allowance for loan losses (17,609 ) (16,715 ) Total loans held for investment, net $ 1,197,964 $ 1,103,162
Summary of Changes in Allowance for Loan Losses	Changes in the allowance for loan losses (“ALLL”) are as follows: Three Months Ended September 30, 2017 Real Construction Commercial Residential Consumer Estate and Land and and and (Dollars in thousands) Term Development Industrial Home Equity Other Total Balance at beginning of period $ 7,157 $ 5,077 $ 4,489 $ 503 $ 45 $ 17,271 Additions: Provisions for loan losses (303 ) 409 770 (44 ) 68 900 Deductions: Gross loan charge-offs — — (621 ) — (46 ) (667 ) Recoveries 23 2 46 7 27 105 Net loan charge-offs 23 2 (575 ) 7 (19 ) (562 ) Balance at end of period $ 6,877 $ 5,488 $ 4,684 $ 466 $ 94 $ 17,609 Three Months Ended September 30, 2016 Real Construction Commercial Residential Consumer Estate and Land and and and (Dollars in thousands) Term Development Industrial Home Equity Other Total Balance at beginning of period $ 6,869 $ 4,725 $ 3,768 $ 628 $ 162 $ 16,152 Additions: Provisions for loan losses (426 ) 413 411 (24 ) (49 ) 325 Deductions: Gross loan charge-offs — — (558 ) — (57 ) (615 ) Recoveries 3 148 81 8 79 319 Net loan charge-offs 3 148 (477 ) 8 22 (296 ) Balance at end of period $ 6,446 $ 5,286 $ 3,702 $ 612 $ 135 $ 16,181 Note 3 — Loans and Allowance for Loan Losses – Continued Nine Months Ended September 30, 2017 Real Construction Commercial Residential Consumer Estate and Land and and and (Dollars in thousands) Term Development Industrial Home Equity Other Total Balance at beginning of period $ 6,770 $ 5,449 $ 3,718 $ 617 $ 161 $ 16,715 Additions: Provisions for loan losses 253 (42 ) 1,736 40 13 2,000 Deductions: Gross loan charge-offs (350 ) — (893 ) (338 ) (159 ) (1,740 ) Recoveries 204 81 123 147 79 634 Net loan charge-offs (146 ) 81 (770 ) (191 ) (80 ) (1,106 ) Balance at end of period $ 6,877 $ 5,488 $ 4,684 $ 466 $ 94 $ 17,609 Nine Months Ended September 30, 2016 Real Construction Commercial Residential Consumer Estate and Land and and and (Dollars in thousands) Term Development Industrial Home Equity Other Total Balance at beginning of period $ 6,783 $ 3,984 $ 3,941 $ 603 $ 246 $ 15,557 Additions: Provisions for loan losses (349 ) 1,108 202 (80 ) (131 ) 750 Deductions: Gross loan charge-offs — — (630 ) — (177 ) (807 ) Recoveries 12 194 189 89 197 681 Net loan charge-offs 12 194 (441 ) 89 20 (126 ) Balance at end of period $ 6,446 $ 5,286 $ 3,702 $ 612 $ 135 $ 16,181
Summary of Nonaccrual Loans	Non-accrual loans are summarized as follows: September 30, December 31, (Dollars in thousands) 2017 2016 Non-accrual loans, not troubled debt restructured: Real estate term $ 2,193 $ 2,386 Construction and land development 45 378 Commercial and industrial 1,150 1,211 Residential and home equity — 142 Consumer and other 5 14 Total non-accrual loans, not troubled debt restructured 3,393 4,131 Troubled debt restructured loans, non-accrual: Real estate term 378 808 Construction and land development 352 396 Commercial and industrial — — Residential and home equity — — Consumer and other — — Total troubled debt restructured loans, non-accrual 730 1,204 Total non-accrual loans $ 4,123 $ 5,335
Summary of Troubled Debt Restructured Loans	Note 3 — Loans and Allowance for Loan Losses – Continued Troubled debt restructured loans are summarized as follows: September 30, December 31, (Dollars in thousands) 2017 2016 Accruing troubled debt restructured loans $ 3,938 $ 5,572 Non-accrual troubled debt restructured loans 730 1,204 Total troubled debt restructured loans $ 4,668 $ 6,776
Summary of Current and Past Due Loans Held For Investment (Accruing And Non-Accruing)	Current and past due loans held for investment (accruing and non-accruing) are summarized as follows: September 30, 2017 30-89 Days 90+ Days Total Total (Dollars in thousands) Current Past Due Past Due Non-accrual Past Due Loans Commercial real estate: Real estate term $ 624,516 $ 380 $ — $ 2,571 $ 2,951 $ 627,467 Construction and land development 280,289 859 — 397 1,256 281,545 Total commercial real estate 904,805 1,239 — 2,968 4,207 909,012 Commercial and industrial 221,209 315 — 1,150 1,465 222,674 Consumer: Residential and home equity 73,199 184 — — 184 73,383 Consumer and other 14,811 265 18 5 288 15,099 Total consumer 88,010 449 18 5 472 88,482 Total gross loans $ 1,214,024 $ 2,003 $ 18 $ 4,123 $ 6,144 $ 1,220,168 December 31, 2016 30-89 Days 90+ Days Total Total (Dollars in thousands) Current Past Due Past Due Non-accrual Past Due Loans Commercial real estate: Real estate term $ 577,134 $ 1,701 $ — $ 3,194 $ 4,895 $ 582,029 Construction and land development 237,433 1,913 — 774 2,687 240,120 Total commercial real estate 814,567 3,614 — 3,968 7,582 822,149 Commercial and industrial 211,143 906 — 1,211 2,117 213,260 Consumer: Residential and home equity 71,719 1,098 — 142 1,240 72,959 Consumer and other 15,168 474 22 14 510 15,678 Total consumer 86,887 1,572 22 156 1,750 88,637 Total gross loans $ 1,112,597 $ 6,092 $ 22 $ 5,335 $ 11,449 $ 1,124,046
Summary of Outstanding Loan Balances (Accruing and Non - Accruing) Categorized by Credit Quality Indicators	Outstanding loan balances (accruing and non-accruing) categorized by these credit quality indicators are summarized as follows: September 30, 2017 Special Substandard Total Total (Dollars in thousands) Pass Mention and Doubtful Loans Allowance Commercial real estate: Real estate term $ 603,905 $ 11,481 $ 12,081 $ 627,467 $ 6,877 Construction and land development 273,580 4,686 3,279 281,545 5,488 Total commercial real estate 877,485 16,167 15,360 909,012 12,365 Commercial and industrial 208,849 5,797 8,028 222,674 4,684 Consumer loans: Residential and home equity 70,627 1,705 1,051 73,383 466 Consumer and other 14,953 48 98 15,099 94 Total consumer 85,580 1,753 1,149 88,482 560 Total $ 1,171,914 $ 23,717 $ 24,537 $ 1,220,168 $ 17,609 December 31, 2016 Special Substandard Total Total (Dollars in thousands) Pass Mention and Doubtful Loans Allowance Commercial real estate: Real estate term $ 565,550 $ 10,609 $ 5,870 $ 582,029 $ 6,770 Construction and land development 234,359 2,222 3,539 240,120 5,449 Total commercial real estate 799,909 12,831 9,409 822,149 12,219 Commercial and industrial 205,933 2,266 5,061 213,260 3,718 Consumer loans: Residential and home equity 69,287 1,869 1,803 72,959 617 Consumer and other 15,542 — 136 15,678 161 Total consumer 84,829 1,869 1,939 88,637 778 Total $ 1,090,671 $ 16,966 $ 16,409 $ 1,124,046 $ 16,715
Summary of Information on Impaired Loans	Note 3 — Loans and Allowance for Loan Losses – Continued The ALLL and outstanding loan balances reviewed according to the Company’s impairment method are summarized as follows: September 30, 2017 Real Construction Commercial Residential Consumer Estate and Land and and and (Dollars in thousands) Term Development Industrial Home Equity Other Total Allowance for loan losses: Individually evaluated for impairment $ 59 $ 67 $ 396 $ 71 $ — $ 593 Collectively evaluated for impairment 6,818 5,421 4,288 395 94 17,016 Total $ 6,877 $ 5,488 $ 4,684 $ 466 $ 94 $ 17,609 Outstanding loan balances: Individually evaluated for impairment $ 5,752 $ 1,800 $ 2,882 $ 632 $ — $ 11,066 Collectively evaluated for impairment 621,715 279,745 219,792 72,751 15,099 1,209,102 Total gross loans $ 627,467 $ 281,545 $ 222,674 $ 73,383 $ 15,099 $ 1,220,168 December 31, 2016 Real Construction Commercial Residential Consumer Estate and Land and and and (Dollars in thousands) Term Development Industrial Home Equity Other Total Allowance for loan losses: Individually evaluated for impairment $ 189 $ 67 $ 323 $ 75 $ — $ 654 Collectively evaluated for impairment 6,581 5,382 3,395 542 161 16,061 Total $ 6,770 $ 5,449 $ 3,718 $ 617 $ 161 $ 16,715 Outstanding loan balances: Individually evaluated for impairment $ 5,778 $ 2,995 $ 6,045 $ 1,476 $ — $ 16,294 Collectively evaluated for impairment 576,251 237,125 207,215 71,483 15,678 1,107,752 Total gross loans $ 582,029 $ 240,120 $ 213,260 $ 72,959 $ 15,678 $ 1,124,046 Information on impaired loans is summarized as follows: September 30, 2017 Recorded Investment Unpaid Total Principal With No With Recorded Related (Dollars in thousands) Balance Allowance Allowance Investment Allowance Commercial real estate: Real estate term $ 5,838 $ 4,198 $ 1,554 $ 5,752 $ 59 Construction and land development 2,754 1,603 197 1,800 67 Total commercial real estate 8,592 5,801 1,751 7,552 126 Commercial and industrial 4,276 1,674 1,208 2,882 396 Consumer loans: Residential and home equity 632 230 402 632 71 Consumer and other — — — — — Total consumer 632 230 402 632 71 Total $ 13,500 $ 7,705 $ 3,361 $ 11,066 $ 593 Note 3 — Loans and Allowance for Loan Losses – Continued December 31, 2016 Recorded Investment Unpaid Total Principal With No With Recorded Related (Dollars in thousands) Balance Allowance Allowance Investment Allowance Commercial real estate: Real estate term $ 5,864 $ 2,979 $ 2,799 $ 5,778 $ 189 Construction and land development 3,949 2,790 205 2,995 67 Total commercial real estate 9,813 5,769 3,004 8,773 256 Commercial and industrial 6,937 4,458 1,587 6,045 323 Consumer loans: Residential and home equity 1,476 1,071 405 1,476 75 Consumer and other — — — — — Total consumer 1,476 1,071 405 1,476 75 Total $ 18,226 $ 11,298 $ 4,996 $ 16,294 $ 654 The interest income recognized on impaired loans was as follows: Three Months Ended September 30, 2017 September 30, 2016 Average Interest Average Interest Recorded Income Recorded Income (Dollars in thousands) Investment Recognition Investment Recognition Commercial real estate: Real estate term $ 6,648 $ 100 $ 8,990 $ 65 Construction and land development 1,880 73 3,528 54 Total commercial real estate 8,528 173 12,518 119 Commercial and industrial 4,659 103 6,353 88 Consumer loans: Residential and home equity 1,052 26 1,971 23 Consumer and other — — 15 1 Total consumer 1,052 26 1,986 24 Total $ 14,239 $ 302 $ 20,857 $ 231 Nine Months Ended September 30, 2017 September 30, 2016 Average Interest Average Interest Recorded Income Recorded Income (Dollars in thousands) Investment Recognition Investment Recognition Commercial real estate: Real estate term $ 5,765 $ 118 $ 9,067 $ 218 Construction and land development 2,397 104 3,752 156 Total commercial real estate 8,162 222 12,819 374 Commercial and industrial 4,464 148 6,944 273 Consumer loans: Residential and home equity 1,054 37 1,977 57 Consumer and other — — 15 1 Total consumer 1,054 37 1,992 58 Total $ 13,680 $ 407 $ 21,755 $ 705

Commitments and Contingencies (

Commitments and Contingencies (Tables)	9 Months Ended
	Sep. 30, 2017
Commitments And Contingencies Disclosure [Abstract]
Summary of Contractual Amounts of Off-balance Sheet Financial Instruments	Contractual amounts of off-balance sheet financial instruments were as follows: September 30, December 31, (Dollars in thousands) 2017 2016 Commitments to extend credit, including unsecured commitments of $12,130 and $11,230 as of September 30, 2017 and December 31, 2016, respectively $ 543,604 $ 445,645 Stand-by letters of credit and bond commitments, including unsecured commitments of $609 and $660 as of September 30, 2017 and December 31, 2016, respectively 25,722 29,332 Unused credit card lines, all unsecured 25,361 25,803

Fair Value (Tables)

Fair Value (Tables)	9 Months Ended
	Sep. 30, 2017
Fair Value Disclosures [Abstract]
Summary of Asset Measured at Fair Value	Assets measured at fair value are summarized as follows: (Dollars in thousands) Level 1 Level 2 Level 3 Total As of September 30, 2017 Fair valued on a recurring basis: Investment securities available-for-sale $ 1,000 $ 225,808 $ — $ 226,808 Fair valued on a non-recurring basis: Impaired loans — 2,768 — 2,768 Other real estate owned — 325 — 325 As of December 31, 2016 Fair valued on a recurring basis: Investment securities available-for-sale $ 1,008 $ 334,601 $ — $ 335,609 Fair valued on a non-recurring basis: Impaired loans — 4,342 — 4,342
Fair Value of Financial Instruments	Fair value of financial instruments — The following table summarizes carrying amounts, estimated fair values and assumptions used to estimate fair values of financial instruments: Carrying Estimated (Dollars in thousands) Value Fair Value As of September 30, 2017 Financial Assets: Net loans held for investment $ 1,197,964 $ 1,198,362 Financial Liabilities: Interest bearing deposits 1,000,945 1,000,496 As of December 31, 2016 Financial Assets: Net loans held for investment $ 1,103,162 $ 1,101,890 Financial Liabilities: Interest bearing deposits 981,974 982,380

Basis of Presentation - Additio

Basis of Presentation - Additional Information (Details)	Sep. 30, 2017Division
People's Intermountain Bank [Member]
Basis Of Presentation [Line Items]
Number of banking divisions	2

Basis of Presentation - Schedul

Basis of Presentation - Schedule of Earnings Per Common Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Numerator
Net income	$ 6,238	$ 6,248	$ 19,253	$ 17,068
Denominator
Weighted-average number of common shares outstanding	17,976,066	17,764,647	17,933,010	17,711,899
Incremental shares assumed for stock options and RSUs	420,598	483,361	422,126	470,154
Weighted-average number of dilutive shares outstanding	18,396,664	18,248,008	18,355,136	18,182,053
Basic earnings per common share	$ 0.35	$ 0.35	$ 1.07	$ 0.96
Diluted earnings per common share	$ 0.34	$ 0.34	$ 1.05	$ 0.94

Investment Securities - Summary

Investment Securities - Summary of Amortized Cost and Estimated Fair Value of Investment Securities Available for Sale (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Schedule Of Available For Sale Securities [Line Items]
Available-For-Sale, Amortized Cost	$ 227,657	$ 337,245
Available-For-Sale, Gross Unrealized Gains	1,274	1,179
Available-For-Sale, Gross Unrealized Losses, Less Than 12 Months	(778)	(1,870)
Available-For-Sale, Gross Unrealized Losses, 12 Months or Longer	(1,345)	(945)
Available-For-Sale, Fair Value	226,808	335,609
U.S. Government Sponsored Securities
Schedule Of Available For Sale Securities [Line Items]
Available-For-Sale, Amortized Cost	50,950	119,202
Available-For-Sale, Gross Unrealized Gains	151	71
Available-For-Sale, Gross Unrealized Losses, Less Than 12 Months	(42)	(669)
Available-For-Sale, Gross Unrealized Losses, 12 Months or Longer	(228)	(1)
Available-For-Sale, Fair Value	50,831	118,603
Mortgage-backed Securities
Schedule Of Available For Sale Securities [Line Items]
Available-For-Sale, Amortized Cost	154,889	182,867
Available-For-Sale, Gross Unrealized Gains	816	679
Available-For-Sale, Gross Unrealized Losses, Less Than 12 Months	(725)	(1,111)
Available-For-Sale, Gross Unrealized Losses, 12 Months or Longer	(863)	(614)
Available-For-Sale, Fair Value	154,117	181,821
Municipal Securities
Schedule Of Available For Sale Securities [Line Items]
Available-For-Sale, Amortized Cost	16,818	25,176
Available-For-Sale, Gross Unrealized Gains	307	401
Available-For-Sale, Gross Unrealized Losses, Less Than 12 Months	(11)	(58)
Available-For-Sale, Gross Unrealized Losses, 12 Months or Longer	(12)
Available-For-Sale, Fair Value	17,102	25,519
Corporate Securities
Schedule Of Available For Sale Securities [Line Items]
Available-For-Sale, Amortized Cost	5,000	10,000
Available-For-Sale, Gross Unrealized Gains		28
Available-For-Sale, Gross Unrealized Losses, Less Than 12 Months		(32)
Available-For-Sale, Gross Unrealized Losses, 12 Months or Longer	(242)	(330)
Available-For-Sale, Fair Value	$ 4,758	$ 9,666

Investment Securities - Summa26

Investment Securities - Summary of Amortized Cost and Estimated Fair Value of Investment Securities Held-to-Maturity (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Schedule Of Held To Maturity Securities [Line Items]
Held-To-Maturity, Amortized Cost	$ 75,808	$ 73,512
Held-To-Maturity, Fair Value	76,093
Municipal Securities
Schedule Of Held To Maturity Securities [Line Items]
Held-To-Maturity, Amortized Cost	75,808	73,512
Held-To-Maturity, Gross Unrealized Gains	475	105
Held-To-Maturity, Gross Unrealized Losses, Less Than 12 Months	(177)	(579)
Held-To-Maturity, Gross Unrealized Losses, 12 Months or Longer	(13)	(38)
Held-To-Maturity, Fair Value	$ 76,093	$ 73,000

Investment Securities - Amortiz

Investment Securities - Amortized Cost and Estimated Fair Value of Investment Securities that are Available-for-Sale and Held-to-Maturity by Contractual Maturity (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Available-For-Sale Securities by Maturity, Amortized Cost
Available-For-Sale, Securities maturing in one year or less, Amortized cost	$ 7,326
Available-For-Sale, Securities maturing in After one year through five years, Amortized cost	53,637
Available-For-Sale, Securities maturing in After five years through ten years, Amortized cost	79,059
Available-For-Sale, Securities maturing in After ten years, Amortized cost	87,635
Available-For-Sale, Amortized Cost	227,657	$ 337,245
Available-For-Sale Securities by Maturity, Fair Value
Available-For-Sale, Securities maturing in one year or less, Fair Value	7,360
Available-For-Sale, Securities maturing in After one year through five years, Fair Value	53,610
Available-For-Sale, Securities maturing in After five years through ten years, Fair Value	78,391
Available-For-Sale, Securities maturing in After ten years, Fair Value	87,447
Available-For-Sale, Fair Value	226,808	335,609
Held-To-Maturity Securities by Maturity, Amortized Cost
Held-To-Maturity, Securities maturing in one year or less, Amortized Cost	6,956
Held-To-Maturity, Securities maturing in After one year through five years, Amortized Cost	45,381
Held-To-Maturity, Securities maturing in After five years through ten years, Amortized Cost	16,785
Held-To-Maturity, Securities maturing in After ten years, Amortized Cost	6,686
Held-To-Maturity, Amortized Cost	75,808	$ 73,512
Held-To-Maturity Securities by Maturity, Fair Value
Held-To-Maturity, Securities maturing in one year or less, Fair Value	6,957
Held-To-Maturity, Securities maturing in After one year through five years, Fair Value	45,552
Held-To-Maturity, Securities maturing in After five years through ten years, Fair Value	16,881
Held-To-Maturity, Securities maturing in After ten years, Fair Value	6,703
Held-To-Maturity, Fair Value	$ 76,093

Investment Securities - Additio

Investment Securities - Additional Information (Details)	Sep. 30, 2017Securities
Investments Debt And Equity Securities [Abstract]
Number of investment securities with fair value less than amortized cost	201

Loans and Allowance for Loan 29

Loans and Allowance for Loan Losses - Summary of Loans (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Jun. 30, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Dec. 31, 2015
Accounts Notes And Loans Receivable [Line Items]
Gross loans held for investment	$ 1,220,168		$ 1,124,046
Net deferred loan fees	(4,595)		(4,169)
Total loans held for investment	1,215,573		1,119,877
Less allowance for loan losses	(17,609)	$ (17,271)	(16,715)	$ (16,181)	$ (16,152)	$ (15,557)
Total loans held for investment, net	1,197,964		1,103,162
Real Estate Term
Accounts Notes And Loans Receivable [Line Items]
Gross loans held for investment	627,467		582,029
Less allowance for loan losses	(6,877)	(7,157)	(6,770)	(6,446)	(6,869)	(6,783)
Construction and Land Development
Accounts Notes And Loans Receivable [Line Items]
Gross loans held for investment	281,545		240,120
Less allowance for loan losses	(5,488)	(5,077)	(5,449)	(5,286)	(4,725)	(3,984)
Residential and Home Equity
Accounts Notes And Loans Receivable [Line Items]
Gross loans held for investment	73,383		72,959
Less allowance for loan losses	(466)	(503)	(617)	(612)	(628)	(603)
Consumer and Other
Accounts Notes And Loans Receivable [Line Items]
Gross loans held for investment	15,099		15,678
Less allowance for loan losses	(94)	(45)	(161)	(135)	(162)	(246)
Commercial Real Estate
Accounts Notes And Loans Receivable [Line Items]
Gross loans held for investment	909,012		822,149
Less allowance for loan losses	(12,365)		(12,219)
Commercial Real Estate | Real Estate Term
Accounts Notes And Loans Receivable [Line Items]
Gross loans held for investment	627,467		582,029
Less allowance for loan losses	(6,877)		(6,770)
Commercial Real Estate | Construction and Land Development
Accounts Notes And Loans Receivable [Line Items]
Gross loans held for investment	281,545		240,120
Less allowance for loan losses	(5,488)		(5,449)
Commercial and Industrial
Accounts Notes And Loans Receivable [Line Items]
Gross loans held for investment	222,674		213,260
Less allowance for loan losses	(4,684)	$ (4,489)	(3,718)	$ (3,702)	$ (3,768)	$ (3,941)
Consumer
Accounts Notes And Loans Receivable [Line Items]
Gross loans held for investment	88,482		88,637
Less allowance for loan losses	(560)		(778)
Consumer | Residential and Home Equity
Accounts Notes And Loans Receivable [Line Items]
Gross loans held for investment	73,383		72,959
Less allowance for loan losses	(466)		(617)
Consumer | Consumer and Other
Accounts Notes And Loans Receivable [Line Items]
Gross loans held for investment	15,099		15,678
Less allowance for loan losses	$ (94)		$ (161)

Loans and Allowance for Loan 30

Loans and Allowance for Loan Losses - Summary of Changes in Allowance for Loan Losses (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Financing Receivable Allowance For Credit Losses [Line Items]
Balance at beginning of period	$ 17,271	$ 16,152	$ 16,715	$ 15,557
Provision for loan losses	900	325	2,000	750
Gross loan charge-offs	(667)	(615)	(1,740)	(807)
Recoveries	105	319	634	681
Net loan charge-offs	(562)	(296)	(1,106)	(126)
Balance at end of period	17,609	16,181	17,609	16,181
Real Estate Term
Financing Receivable Allowance For Credit Losses [Line Items]
Balance at beginning of period	7,157	6,869	6,770	6,783
Provision for loan losses	(303)	(426)	253	(349)
Gross loan charge-offs			(350)
Recoveries	23	3	204	12
Net loan charge-offs	23	3	(146)	12
Balance at end of period	6,877	6,446	6,877	6,446
Construction and Land Development
Financing Receivable Allowance For Credit Losses [Line Items]
Balance at beginning of period	5,077	4,725	5,449	3,984
Provision for loan losses	409	413	(42)	1,108
Recoveries	2	148	81	194
Net loan charge-offs	2	148	81	194
Balance at end of period	5,488	5,286	5,488	5,286
Residential and Home Equity
Financing Receivable Allowance For Credit Losses [Line Items]
Balance at beginning of period	503	628	617	603
Provision for loan losses	(44)	(24)	40	(80)
Gross loan charge-offs			(338)
Recoveries	7	8	147	89
Net loan charge-offs	7	8	(191)	89
Balance at end of period	466	612	466	612
Consumer and Other
Financing Receivable Allowance For Credit Losses [Line Items]
Balance at beginning of period	45	162	161	246
Provision for loan losses	68	(49)	13	(131)
Gross loan charge-offs	(46)	(57)	(159)	(177)
Recoveries	27	79	79	197
Net loan charge-offs	(19)	22	(80)	20
Balance at end of period	94	135	94	135
Commercial and Industrial
Financing Receivable Allowance For Credit Losses [Line Items]
Balance at beginning of period	4,489	3,768	3,718	3,941
Provision for loan losses	770	411	1,736	202
Gross loan charge-offs	(621)	(558)	(893)	(630)
Recoveries	46	81	123	189
Net loan charge-offs	(575)	(477)	(770)	(441)
Balance at end of period	$ 4,684	$ 3,702	$ 4,684	$ 3,702

Loans and Allowance for Loan 31

Loans and Allowance for Loan Losses - Summary of Non Accrual Loans (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Financing Receivable Allowance For Credit Losses [Line Items]
Non-accrual loans, not troubled debt restructured	$ 3,393	$ 4,131
Troubled debt restructured loans, non-accrual	730	1,204
Total non-accrual loans	4,123	5,335
Real Estate Term
Financing Receivable Allowance For Credit Losses [Line Items]
Non-accrual loans, not troubled debt restructured	2,193	2,386
Troubled debt restructured loans, non-accrual	378	808
Construction and Land Development
Financing Receivable Allowance For Credit Losses [Line Items]
Non-accrual loans, not troubled debt restructured	45	378
Troubled debt restructured loans, non-accrual	352	396
Commercial and Industrial Loans
Financing Receivable Allowance For Credit Losses [Line Items]
Non-accrual loans, not troubled debt restructured	1,150	1,211
Residential and Home Equity
Financing Receivable Allowance For Credit Losses [Line Items]
Non-accrual loans, not troubled debt restructured		142
Consumer and Other
Financing Receivable Allowance For Credit Losses [Line Items]
Non-accrual loans, not troubled debt restructured	$ 5	$ 14

Loans and Allowance for Loan 32

Loans and Allowance for Loan Losses - Summary of Troubled Debt Restructured Loans (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Loans And Leases Receivable Disclosure [Abstract]
Accruing troubled debt restructured loans	$ 3,938	$ 5,572
Non-accrual troubled debt restructured loans	730	1,204
Total troubled debt restructured loans	$ 4,668	$ 6,776

Loans and Allowance for Loan 33

Loans and Allowance for Loan Losses - Summary of Current and Past Due Loans Held For Investment (Accruing And Non-Accruing) (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Financing Receivable Recorded Investment Past Due [Line Items]
Current	$ 1,214,024	$ 1,112,597
30-89 Days Past Due	2,003	6,092
90+ Days Past Due	18	22
Non-accrual	4,123	5,335
Total Past-Due	6,144	11,449
Total loans	1,220,168	1,124,046
Real Estate Term
Financing Receivable Recorded Investment Past Due [Line Items]
Total loans	627,467	582,029
Construction and Land Development
Financing Receivable Recorded Investment Past Due [Line Items]
Total loans	281,545	240,120
Residential and Home Equity
Financing Receivable Recorded Investment Past Due [Line Items]
Total loans	73,383	72,959
Consumer and Other
Financing Receivable Recorded Investment Past Due [Line Items]
Total loans	15,099	15,678
Commercial Real Estate
Financing Receivable Recorded Investment Past Due [Line Items]
Current	904,805	814,567
30-89 Days Past Due	1,239	3,614
Non-accrual	2,968	3,968
Total Past-Due	4,207	7,582
Total loans	909,012	822,149
Commercial Real Estate | Real Estate Term
Financing Receivable Recorded Investment Past Due [Line Items]
Current	624,516	577,134
30-89 Days Past Due	380	1,701
Non-accrual	2,571	3,194
Total Past-Due	2,951	4,895
Total loans	627,467	582,029
Commercial Real Estate | Construction and Land Development
Financing Receivable Recorded Investment Past Due [Line Items]
Current	280,289	237,433
30-89 Days Past Due	859	1,913
Non-accrual	397	774
Total Past-Due	1,256	2,687
Total loans	281,545	240,120
Commercial and Industrial
Financing Receivable Recorded Investment Past Due [Line Items]
Current	221,209	211,143
30-89 Days Past Due	315	906
Non-accrual	1,150	1,211
Total Past-Due	1,465	2,117
Total loans	222,674	213,260
Consumer
Financing Receivable Recorded Investment Past Due [Line Items]
Current	88,010	86,887
30-89 Days Past Due	449	1,572
90+ Days Past Due	18	22
Non-accrual	5	156
Total Past-Due	472	1,750
Total loans	88,482	88,637
Consumer | Residential and Home Equity
Financing Receivable Recorded Investment Past Due [Line Items]
Current	73,199	71,719
30-89 Days Past Due	184	1,098
Non-accrual		142
Total Past-Due	184	1,240
Total loans	73,383	72,959
Consumer | Consumer and Other
Financing Receivable Recorded Investment Past Due [Line Items]
Current	14,811	15,168
30-89 Days Past Due	265	474
90+ Days Past Due	18	22
Non-accrual	5	14
Total Past-Due	288	510
Total loans	$ 15,099	$ 15,678

Loans and Allowance for Loan 34

Loans and Allowance for Loan Losses - Summary of Outstanding Loan Balances (Accruing and Non - Accruing) Categorized by Credit Quality Indicators (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Jun. 30, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Dec. 31, 2015
Financing Receivable Allowance For Credit Losses [Line Items]
Total Loans	$ 1,220,168		$ 1,124,046
Total Allowance	17,609	$ 17,271	16,715	$ 16,181	$ 16,152	$ 15,557
Real Estate Term
Financing Receivable Allowance For Credit Losses [Line Items]
Total Loans	627,467		582,029
Total Allowance	6,877	7,157	6,770	6,446	6,869	6,783
Construction and Land Development
Financing Receivable Allowance For Credit Losses [Line Items]
Total Loans	281,545		240,120
Total Allowance	5,488	5,077	5,449	5,286	4,725	3,984
Residential and Home Equity
Financing Receivable Allowance For Credit Losses [Line Items]
Total Loans	73,383		72,959
Total Allowance	466	503	617	612	628	603
Consumer and Other
Financing Receivable Allowance For Credit Losses [Line Items]
Total Loans	15,099		15,678
Total Allowance	94	45	161	135	162	246
Commercial Real Estate
Financing Receivable Allowance For Credit Losses [Line Items]
Total Loans	909,012		822,149
Total Allowance	12,365		12,219
Commercial Real Estate | Real Estate Term
Financing Receivable Allowance For Credit Losses [Line Items]
Total Loans	627,467		582,029
Total Allowance	6,877		6,770
Commercial Real Estate | Construction and Land Development
Financing Receivable Allowance For Credit Losses [Line Items]
Total Loans	281,545		240,120
Total Allowance	5,488		5,449
Commercial and Industrial
Financing Receivable Allowance For Credit Losses [Line Items]
Total Loans	222,674		213,260
Total Allowance	4,684	$ 4,489	3,718	$ 3,702	$ 3,768	$ 3,941
Consumer
Financing Receivable Allowance For Credit Losses [Line Items]
Total Loans	88,482		88,637
Total Allowance	560		778
Consumer | Residential and Home Equity
Financing Receivable Allowance For Credit Losses [Line Items]
Total Loans	73,383		72,959
Total Allowance	466		617
Consumer | Consumer and Other
Financing Receivable Allowance For Credit Losses [Line Items]
Total Loans	15,099		15,678
Total Allowance	94		161
Pass
Financing Receivable Allowance For Credit Losses [Line Items]
Total Loans	1,171,914		1,090,671
Pass | Commercial Real Estate
Financing Receivable Allowance For Credit Losses [Line Items]
Total Loans	877,485		799,909
Pass | Commercial Real Estate | Real Estate Term
Financing Receivable Allowance For Credit Losses [Line Items]
Total Loans	603,905		565,550
Pass | Commercial Real Estate | Construction and Land Development
Financing Receivable Allowance For Credit Losses [Line Items]
Total Loans	273,580		234,359
Pass | Commercial and Industrial
Financing Receivable Allowance For Credit Losses [Line Items]
Total Loans	208,849		205,933
Pass | Consumer
Financing Receivable Allowance For Credit Losses [Line Items]
Total Loans	85,580		84,829
Pass | Consumer | Residential and Home Equity
Financing Receivable Allowance For Credit Losses [Line Items]
Total Loans	70,627		69,287
Pass | Consumer | Consumer and Other
Financing Receivable Allowance For Credit Losses [Line Items]
Total Loans	14,953		15,542
Special Mention
Financing Receivable Allowance For Credit Losses [Line Items]
Total Loans	23,717		16,966
Special Mention | Commercial Real Estate
Financing Receivable Allowance For Credit Losses [Line Items]
Total Loans	16,167		12,831
Special Mention | Commercial Real Estate | Real Estate Term
Financing Receivable Allowance For Credit Losses [Line Items]
Total Loans	11,481		10,609
Special Mention | Commercial Real Estate | Construction and Land Development
Financing Receivable Allowance For Credit Losses [Line Items]
Total Loans	4,686		2,222
Special Mention | Commercial and Industrial
Financing Receivable Allowance For Credit Losses [Line Items]
Total Loans	5,797		2,266
Special Mention | Consumer
Financing Receivable Allowance For Credit Losses [Line Items]
Total Loans	1,753		1,869
Special Mention | Consumer | Residential and Home Equity
Financing Receivable Allowance For Credit Losses [Line Items]
Total Loans	1,705		1,869
Special Mention | Consumer | Consumer and Other
Financing Receivable Allowance For Credit Losses [Line Items]
Total Loans	48
Substandard and Doubtful
Financing Receivable Allowance For Credit Losses [Line Items]
Total Loans	24,537		16,409
Substandard and Doubtful | Commercial Real Estate
Financing Receivable Allowance For Credit Losses [Line Items]
Total Loans	15,360		9,409
Substandard and Doubtful | Commercial Real Estate | Real Estate Term
Financing Receivable Allowance For Credit Losses [Line Items]
Total Loans	12,081		5,870
Substandard and Doubtful | Commercial Real Estate | Construction and Land Development
Financing Receivable Allowance For Credit Losses [Line Items]
Total Loans	3,279		3,539
Substandard and Doubtful | Commercial and Industrial
Financing Receivable Allowance For Credit Losses [Line Items]
Total Loans	8,028		5,061
Substandard and Doubtful | Consumer
Financing Receivable Allowance For Credit Losses [Line Items]
Total Loans	1,149		1,939
Substandard and Doubtful | Consumer | Residential and Home Equity
Financing Receivable Allowance For Credit Losses [Line Items]
Total Loans	1,051		1,803
Substandard and Doubtful | Consumer | Consumer and Other
Financing Receivable Allowance For Credit Losses [Line Items]
Total Loans	$ 98		$ 136

Loans and Allowance for Loan 35

Loans and Allowance for Loan Losses - Summary of ALLL And Outstanding Loan Balances According To The Company's Impairment Method (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Jun. 30, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Dec. 31, 2015
Financing Receivable Allowance For Credit Losses [Line Items]
Allowance for loan losses, Individually evaluated for impairment	$ 593		$ 654
Allowance for loan losses, Collectively evaluated for impairment	17,016		16,061
Allowance for loan losses, Total	17,609	$ 17,271	16,715	$ 16,181	$ 16,152	$ 15,557
Outstanding loan balances, Individually evaluated for impairment	11,066		16,294
Outstanding loan balances, Collectively evaluated for impairment	1,209,102		1,107,752
Total loans	1,220,168		1,124,046
Real Estate Term
Financing Receivable Allowance For Credit Losses [Line Items]
Allowance for loan losses, Individually evaluated for impairment	59		189
Allowance for loan losses, Collectively evaluated for impairment	6,818		6,581
Allowance for loan losses, Total	6,877	7,157	6,770	6,446	6,869	6,783
Outstanding loan balances, Individually evaluated for impairment	5,752		5,778
Outstanding loan balances, Collectively evaluated for impairment	621,715		576,251
Total loans	627,467		582,029
Construction and Land Development
Financing Receivable Allowance For Credit Losses [Line Items]
Allowance for loan losses, Individually evaluated for impairment	67		67
Allowance for loan losses, Collectively evaluated for impairment	5,421		5,382
Allowance for loan losses, Total	5,488	5,077	5,449	5,286	4,725	3,984
Outstanding loan balances, Individually evaluated for impairment	1,800		2,995
Outstanding loan balances, Collectively evaluated for impairment	279,745		237,125
Total loans	281,545		240,120
Residential and Home Equity
Financing Receivable Allowance For Credit Losses [Line Items]
Allowance for loan losses, Individually evaluated for impairment	71		75
Allowance for loan losses, Collectively evaluated for impairment	395		542
Allowance for loan losses, Total	466	503	617	612	628	603
Outstanding loan balances, Individually evaluated for impairment	632		1,476
Outstanding loan balances, Collectively evaluated for impairment	72,751		71,483
Total loans	73,383		72,959
Consumer and Other
Financing Receivable Allowance For Credit Losses [Line Items]
Allowance for loan losses, Collectively evaluated for impairment	94		161
Allowance for loan losses, Total	94	45	161	135	162	246
Outstanding loan balances, Collectively evaluated for impairment	15,099		15,678
Total loans	15,099		15,678
Commercial and Industrial
Financing Receivable Allowance For Credit Losses [Line Items]
Allowance for loan losses, Individually evaluated for impairment	396		323
Allowance for loan losses, Collectively evaluated for impairment	4,288		3,395
Allowance for loan losses, Total	4,684	$ 4,489	3,718	$ 3,702	$ 3,768	$ 3,941
Outstanding loan balances, Individually evaluated for impairment	2,882		6,045
Outstanding loan balances, Collectively evaluated for impairment	219,792		207,215
Total loans	$ 222,674		$ 213,260

Loans and Allowance for Loan 36

Loans and Allowance for Loan Losses - Summary of Information On Impaired Loans (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Financing Receivable Impaired [Line Items]
Unpaid Principal Balance	$ 13,500	$ 18,226
Recorded investment With No Allowance	7,705	11,298
Recorded investment With Allowance	3,361	4,996
Total Recorded Investment	11,066	16,294
Related Allowance	593	654
Commercial Real Estate
Financing Receivable Impaired [Line Items]
Unpaid Principal Balance	8,592	9,813
Recorded investment With No Allowance	5,801	5,769
Recorded investment With Allowance	1,751	3,004
Total Recorded Investment	7,552	8,773
Related Allowance	126	256
Commercial Real Estate | Real Estate Term
Financing Receivable Impaired [Line Items]
Unpaid Principal Balance	5,838	5,864
Recorded investment With No Allowance	4,198	2,979
Recorded investment With Allowance	1,554	2,799
Total Recorded Investment	5,752	5,778
Related Allowance	59	189
Commercial Real Estate | Construction and Land Development
Financing Receivable Impaired [Line Items]
Unpaid Principal Balance	2,754	3,949
Recorded investment With No Allowance	1,603	2,790
Recorded investment With Allowance	197	205
Total Recorded Investment	1,800	2,995
Related Allowance	67	67
Commercial and Industrial
Financing Receivable Impaired [Line Items]
Unpaid Principal Balance	4,276	6,937
Recorded investment With No Allowance	1,674	4,458
Recorded investment With Allowance	1,208	1,587
Total Recorded Investment	2,882	6,045
Related Allowance	396	323
Consumer
Financing Receivable Impaired [Line Items]
Unpaid Principal Balance	632	1,476
Recorded investment With No Allowance	230	1,071
Recorded investment With Allowance	402	405
Total Recorded Investment	632	1,476
Related Allowance	71	75
Consumer | Residential and Home Equity
Financing Receivable Impaired [Line Items]
Unpaid Principal Balance	632	1,476
Recorded investment With No Allowance	230	1,071
Recorded investment With Allowance	402	405
Total Recorded Investment	632	1,476
Related Allowance	$ 71	$ 75

Loans and Allowance for Loan 37

Loans and Allowance for Loan Losses - Summary of Interest Income Recognized on Impaired Loans (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Financing Receivable Impaired [Line Items]
Average Recorded Investment	$ 14,239	$ 20,857	$ 13,680	$ 21,755
Interest Income Recognition	302	231	407	705
Commercial Real Estate
Financing Receivable Impaired [Line Items]
Average Recorded Investment	8,528	12,518	8,162	12,819
Interest Income Recognition	173	119	222	374
Commercial Real Estate | Real Estate Term
Financing Receivable Impaired [Line Items]
Average Recorded Investment	6,648	8,990	5,765	9,067
Interest Income Recognition	100	65	118	218
Commercial Real Estate | Construction and Land Development
Financing Receivable Impaired [Line Items]
Average Recorded Investment	1,880	3,528	2,397	3,752
Interest Income Recognition	73	54	104	156
Commercial and Industrial
Financing Receivable Impaired [Line Items]
Average Recorded Investment	4,659	6,353	4,464	6,944
Interest Income Recognition	103	88	148	273
Consumer
Financing Receivable Impaired [Line Items]
Average Recorded Investment	1,052	1,986	1,054	1,992
Interest Income Recognition	26	24	37	58
Consumer | Residential and Home Equity
Financing Receivable Impaired [Line Items]
Average Recorded Investment	1,052	1,971	1,054	1,977
Interest Income Recognition	$ 26	23	$ 37	57
Consumer | Consumer and Other
Financing Receivable Impaired [Line Items]
Average Recorded Investment		15		15
Interest Income Recognition		$ 1		$ 1

Loans and Allowance for Loan 38

Loans and Allowance for Loan Losses - Additional Information (Details) - USD ($)	Sep. 30, 2017	Dec. 31, 2016
Related Party Transaction [Line Items]
Available lines of credit for loans and credit cards to affiliates	$ 548,000
Deposits from affiliates	7,900,000	$ 7,800,000
Affiliates
Related Party Transaction [Line Items]
Outstanding loans with affiliates	$ 3,366,000	$ 330,000

Commitments and Contingencies -

Commitments and Contingencies - Summary of Contractual Amounts of Off-balance Sheet Financial Instruments (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Commitments to Extend Credit [Member]
Commitments And Contingencies [Line Items]
Off-balance sheet financial instrument, contractual amount	$ 543,604	$ 445,645
Stand-by Letters of Credit and Bond Commitments [Member]
Commitments And Contingencies [Line Items]
Off-balance sheet financial instrument, contractual amount	25,722	29,332
Unused Credit Card Lines, All Unsecured [Member]
Commitments And Contingencies [Line Items]
Off-balance sheet financial instrument, contractual amount	$ 25,361	$ 25,803

Commitments and Contingencies40

Commitments and Contingencies - Summary of Contractual Amounts of Off-balance Sheet Financial Instruments (Parenthetical) (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Unsecured Commitments Included in Commitments to Extend Credit [Member]
Commitments And Contingencies [Line Items]
Off-balance sheet financial instrument, contractual amount	$ 12,130	$ 11,230
Unsecured Commitments Included in Stand-by Letters of Credit and Bond Commitments [Member]
Commitments And Contingencies [Line Items]
Off-balance sheet financial instrument, contractual amount	$ 609	$ 660

Fair Value - Summary of Asset M

Fair Value - Summary of Asset Measured at Fair Value (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Investment securities available-for-sale	$ 226,808	$ 335,609
Fair Valued on a Recurring Basis [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Investment securities available-for-sale	226,808	335,609
Fair Valued on a Non-Recurring Basis [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Impaired loans	2,768	4,342
Other real estate owned	325
Level 1 [Member] | Fair Valued on a Recurring Basis [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Investment securities available-for-sale	1,000	1,008
Level 2 [Member] | Fair Valued on a Recurring Basis [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Investment securities available-for-sale	225,808	334,601
Level 2 [Member] | Fair Valued on a Non-Recurring Basis [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Impaired loans	2,768	$ 4,342
Other real estate owned	$ 325

Fair Value - Summary of Carryin

Fair Value - Summary of Carrying Amounts, Estimated Fair Values and Assumptions Used to Estimate Fair Values of Financial Instruments (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Carrying Value [Member]
Financial Assets:
Net loans held for investment	$ 1,197,964	$ 1,103,162
Financial Liabilities:
Interest bearing deposits	1,000,945	981,974
Estimated Fair Value [Member]
Financial Assets:
Net loans held for investment	1,198,362	1,101,890
Financial Liabilities:
Interest bearing deposits	$ 1,000,496	$ 982,380

Income Taxes - Additional Infor

Income Taxes - Additional Information (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Income Tax Disclosure [Abstract]
Income tax expense	$ 2,697	$ 3,548	$ 9,021	$ 9,840
Effective tax rate	30.20%	36.20%	31.90%	36.60%
Deferred tax liability, unrecognized tax benefits	$ 1,200		$ 1,200

Regulatory Capital Matters - Ad

Regulatory Capital Matters - Additional Information (Details) - USD ($) $ in Millions	Sep. 30, 2017	Dec. 31, 2016
Banking And Thrift [Abstract]
Consolidated Tier 1 Leverage ratio	14.07%	13.71%
Investment securities	$ 11.7	$ 9.1

Incentive Share-Based Plan an45

Incentive Share-Based Plan and Other Employee Benefits - Additional Information (Details) - USD ($) $ / shares in Units, $ in Thousands	6 Months Ended	9 Months Ended
	Jun. 30, 2014	Sep. 30, 2017	Sep. 30, 2016
Options [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Options issued to purchase common shares		8,892
Exercise price of common shares		$ 26.75
Fair value as of date of grant per share		$ 4.074
Share-based compensation expense		$ 382	$ 410
Restricted Stock Units [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Restricted stock units granted		16,061
Fair value of restricted stock units		$ 27.36
Share-Based Incentive Plan [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Maximum number of shares available for issuance under the plan	800,000
Maximum [Member] | Options [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Vesting period		3 years
Maximum [Member] | Restricted Stock Units [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Vesting period		3 years
Maximum [Member] | Share-Based Incentive Plan [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Share-based awards granted term	10 years
Minimum [Member] | Options [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Vesting period		1 year
Minimum [Member] | Restricted Stock Units [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Vesting period		1 year

Announced Transactions - Additi

Announced Transactions - Additional Information (Details) $ / shares in Units, $ in Thousands	Oct. 06, 2017USD ($)Locations	May 31, 2017USD ($)$ / sharesshares	Sep. 30, 2017USD ($)	Dec. 31, 2016USD ($)
Business Acquisition [Line Items]
Total assets			$ 1,790,136	$ 1,665,981
Total Loans			1,220,168	1,124,046
Total deposits			$ 1,528,181	$ 1,425,074
Town & Country Bank, Inc. [Member] | Definitive Agreement [Member]
Business Acquisition [Line Items]
Business acquisition, agreement date			May 31, 2017
Business acquisition, share price including cash held in escrow | $ / shares		$ 4.28
Business acquisition, shares issuable | shares		0.2917
Cash to be paid to shareholders held in escrow		$ 2,000
Total assets			$ 127,200
Total Loans			118,300
Total deposits			$ 126,400
Banner Bank [Member] | Subsequent Event [Member]
Business Acquisition [Line Items]
Loans acquired	$ 255,000
Number of branch location acquired | Locations	7
Deposits acquired	$ 160,000
Business acquisition date	Oct. 6, 2017
Deposit premium paid	$ 13,800