Sierra Bancorp (BSRR) 10-Q 8 Nov 17 2017 Q3 Quarterly report Financial data

Document And Entity Information

Document And Entity Information - shares	9 Months Ended
	Sep. 30, 2017	Nov. 01, 2017
Document And Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Sep. 30, 2017
Document Fiscal Year Focus	2,017
Document Fiscal Period Focus	Q3
Entity Registrant Name	SIERRA BANCORP
Entity Central Index Key	1,130,144
Current Fiscal Year End Date	--12-31
Entity Filer Category	Accelerated Filer
Trading Symbol	BSRR
Entity Common Stock, Shares Outstanding		15,218,740

CONSOLIDATED BALANCE SHEETS

CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
ASSETS
Cash and due from banks	$ 52,358	$ 79,087
Interest-bearing deposits in banks	2,249	41,355
Total cash & cash equivalents	54,607	120,442
Securities available-for-sale	583,200	530,083
Loans and leases:
Gross loans and leases	1,311,625	1,262,531
Allowance for loan and lease losses	(8,784)	(9,701)
Deferred loan and lease costs, net	2,705	2,924
Net loans and leases	1,305,546	1,255,754
Foreclosed assets	2,674	2,225
Premises and equipment, net	28,373	28,893
Goodwill	8,268	8,268
Other intangible assets, net	2,483	2,803
Company owned life insurance	45,270	43,706
Other assets	47,572	40,699
Total assets	2,077,993	2,032,873
Deposits:
Non-interest bearing	571,509	524,552
Interest bearing	1,208,070	1,170,919
Total deposits	1,779,579	1,695,471
Repurchase agreements	8,679	8,094
Federal funds purchased	1,600	0
Short-term borrowings	10,500	65,000
Subordinated debentures, net	34,544	34,410
Other liabilities	24,008	24,020
Total Liabilities	1,858,910	1,826,995
Commitments and contingent liabilities (Note 8)
Shareholders' equity
Common stock, no par value; 24,000,000 shares authorized; 13,840,429 and 13,776,589 shares issued and outstanding at September 30, 2017 and December 31, 2016 respectively	73,668	72,626
Additional paid-in capital	2,940	2,832
Retained earnings	141,870	132,180
Accumulated other comprehensive income (loss), net	605	(1,760)
Total shareholders' equity	219,083	205,878
Total liabilities and shareholder's equity	$ 2,077,993	$ 2,032,873

CONSOLIDATED BALANCE SHEETS (Pa

CONSOLIDATED BALANCE SHEETS (Parenthetical) - $ / shares	Sep. 30, 2017	Dec. 31, 2016
Statement Of Financial Position [Abstract]
Common Stock, No Par Value	$ 0	$ 0
Common Stock, Shares Authorized	24,000,000	24,000,000
Common Stock, Shares, Issued	13,840,429	13,776,589
Common Stock, Shares, Outstanding	13,840,429	13,776,589

CONSOLIDATED STATEMENTS OF INCO

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 and dividend income
Loans and leases, including fees	$ 16,543	$ 15,121	$ 47,349	$ 41,360
Taxable securities	2,224	1,879	6,385	6,114
Tax-exempt securities	1,002	765	2,739	2,225
Federal funds sold and other	63	29	317	61
Total interest income	19,832	17,794	56,790	49,760
Interest expense
Deposits	1,032	575	2,588	1,573
Short-term borrowings	14	51	34	107
Subordinated debentures	351	261	1,009	663
Total interest expense	1,397	887	3,631	2,343
Net interest income	18,435	16,907	53,159	47,417
Provision for loan losses	0	0	300	0
Net interest income after provision for loan losses	18,435	16,907	52,859	47,417
Non-interest income
Service charges on deposits	2,916	2,686	8,263	7,535
Net gains on sale of securities available-for-sale	918	90	984	212
Other income	2,076	2,215	7,161	6,112
Total non-interest income	5,910	4,991	16,408	13,859
Other operating expense
Salaries and employee benefits	7,478	6,866	22,617	20,355
Occupancy and equipment	2,368	2,063	6,923	5,680
Other	5,599	7,192	16,698	17,280
Total other operating expense	15,445	16,121	46,238	43,315
Income before taxes	8,900	5,777	23,029	17,961
Provision for income taxes	3,158	1,848	7,533	5,911
Net income	$ 5,742	$ 3,929	$ 15,496	$ 12,050
PER SHARE DATA
Book value	$ 15.83	$ 15.12	$ 15.83	$ 15.12
Cash dividends	0.14	0.12	0.42	0.36
Earnings per share basic	0.41	0.28	1.12	0.90
Earnings per share diluted	$ 0.41	$ 0.28	$ 1.11	$ 0.89
Average shares outstanding, basic	13,839,111	13,790,107	13,824,173	13,446,567
Average shares outstanding, diluted	14,013,987	13,904,460	14,010,894	13,560,716
Total shareholder equity (in thousands)	$ 219,083	$ 208,528	$ 219,083	$ 208,528
Shares outstanding	13,840,429	13,789,501	13,840,429	13,789,501
Dividends Paid (in thousands)	$ 1,937	$ 1,666	$ 5,805	$ 4,851

CONSOLIDATED STATEMENTS OF COMP

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		$ 5,742	$ 3,929	$ 15,496	$ 12,050
Unrealized gains (losses) on securities:
Unrealized holding gain (loss) arising during period		(713)	(674)	5,065	3,813
Less: reclassification adjustment for gains included in net income	[1]	(918)	(90)	(984)	(212)
Other comprehensive (loss) income, before tax		(1,631)	(764)	4,081	3,601
Income tax expense related to items of other comprehensive income (loss), net of tax		686	362	(1,716)	(1,452)
Other comprehensive income (loss) gain		(945)	(402)	2,365	2,149
Comprehensive income		$ 4,797	$ 3,527	$ 17,861	$ 14,199
[1]	Amounts are included in net gains on investment securities available-for-sale on the Consolidated Statements of Income in non-interest revenue. Income tax expense associated with the reclassification adjustment for the three months ended September 30, 2017 and 2016 was $386 thousand and $38 thousand respectively. Income tax expense associated with the reclassification adjustment for the nine months ended September 30, 2017 and 2016 was $414 thousand and $89 thousand respectively.

CONSOLIDATED STATEMENTS OF COM6

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Parenthetical) - 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]
Reclassification adjustment for gain on securities available-for-sale included in net income, tax	$ 386	$ 38	$ 414	$ 89

CONSOLIDATED STATEMENTS OF CASH

CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016
Cash flows from operating activities:
Net income	$ 15,496,000	$ 12,050,000
Adjustments to reconcile net income to net cash provided by operating activities:
Gain on sales of securities	(984,000)	(212,000)
Gain on sales of loans	(3,000)	0
Loss on disposal of fixed assets	66,000	0
(Gain) loss on sale on foreclosed assets	(12,000)	3,000
Writedowns on foreclosed assets	75,000	275,000
Share-based compensation expense	459,000	180,000
Provision for loan losses	300,000	0
Depreciation and amortization	2,177,000	1,880,000
Net amortization on securities premiums and discounts	5,083,000	5,208,000
Amortization/(accretion) of discounts for loans acquired and net deferred loan fees	276,000	(303,000)
(Increase) decrease in cash surrender value of life insurance policies	(1,188,000)	249,000
Amortization of core deposit intangible	320,000	101,000
Decrease in interest receivable and other assets	4,004,000	11,830,000
Increase in other liabilities	(12,000)	(8,995,000)
Deferred income tax (benefit) provision	(336,000)	1,998,000
Net cash provided by operating activities	25,721,000	24,264,000
Cash flows from investing activities:
Maturities of securities available for sale	1,165,000	1,195,000
Proceeds from sales/calls of securities available for sale	22,325,000	23,753,000
Purchases of securities available for sale	(151,711,000)	(103,334,000)
Principal pay downs on securities available for sale	75,086,000	72,463,000
Net purchases of FHLB stock	(235,000)	(960,000)
Net increase in loans receivable, net	(50,976,000)	(31,086,000)
Purchases of premises and equipment, net	(1,589,000)	(4,016,000)
Proceeds from sale premises and equipment	0	1,204,000
Proceeds from sales of foreclosed assets	99,000	982,000
Purchase of company owned life insurance	(376,000)	(300,000)
Net increase in partnership investment	(12,132,000)	(8,338,000)
Net cash from bank acquisition	0	15,502,000
Net cash used in investing activities	(118,344,000)	(32,935,000)
Cash flows from financing activities:
Increase in deposits	84,108,000	40,165,000
Decrease in borrowed funds	(54,500,000)	(8,200,000)
Increase in Fed funds purchased	1,600,000	2,500,000
Increase (decrease) in repurchase agreements	585,000	(2,635,000)
Cash dividends paid	(5,804,000)	(4,851,000)
Repurchases of common stock	0	(1,723,000)
Stock options exercised	799,000	234,000
Net cash provided by financing activities	26,788,000	25,490,000
(Decrease) increase in cash and due from banks	(65,835,000)	16,819,000
Cash and cash equivalents, Beginning of period	120,442,000	48,623,000
Cash and cash equivalents, End of period	$ 54,607,000	$ 65,442,000

The Business of Sierra Bancorp

The Business of Sierra Bancorp	9 Months Ended
	Sep. 30, 2017
Organization Consolidation And Presentation Of Financial Statements [Abstract]
The Business of Sierra Bancorp	Note 1 – The Business of Sierra Bancorp Sierra Bancorp (the “Company”) is a California corporation headquartered in Porterville, California, and is a registered bank holding company under federal banking laws. The Company was formed to serve as the holding company for Bank of the Sierra (the “Bank”), and has been the Bank’s sole shareholder since August 2001. The Company exists primarily for the purpose of holding the stock of the Bank and of such other subsidiaries it may acquire or establish. As of September 30, 2017, the Company’s only other subsidiaries were Sierra Statutory Trust II, Sierra Capital Trust III, and Coast Bancorp Statutory Trust II, which were formed solely to facilitate the issuance of capital trust pass-through securities (“TRUPS”). Pursuant to the Financial Accounting Standards Board (“FASB”) standard on the consolidation of variable interest entities, these trusts are not reflected on a consolidated basis in the Company’s financial statements. References herein to the “Company” include Sierra Bancorp and its consolidated subsidiary, the Bank, unless the context indicates otherwise. Bank of the Sierra, a California state-chartered bank headquartered in Porterville, California, offers a full range of retail and commercial banking services in California’s South San Joaquin Valley, the Central Coast, Ventura County, and neighboring communities. The Bank was incorporated in September 1977, and opened for business in January 1978 as a one-branch bank with $1.5 million in capital. Our growth in the ensuing years has largely been organic in nature, but includes four whole-bank acquisitions: Sierra National Bank in 2000, Santa Clara Valley Bank in 2014, Coast National Bank in 2016, and Ojai Community Bank in October of 2017, subsequent to the reporting date of this 10-Q. Certain branching activity also occurred after the reporting date, namely the consolidation of our Oxnard loan production office into the Ventura branch (a former Ojai Community Bank location), the acquisition of the Woodlake branch from Citizens Business Bank, and the closure of our Fresno Herndon branch. We plan to open a new branch on Palm Avenue in Fresno in 2018, in close proximity to the former Herndon Branch but with easier access and superior visibility. Additional branching activity that has taken place in 2017 includes the opening of a de novo branch in Pismo Beach, California in the third quarter, preceded by the opening of a de novo branch on California Avenue in Bakersfield and the relocation of our Paso Robles branch earlier in the year. Counting our latest acquisitions and branching activity, as of the filing date of this report the Bank operates 39 full service branches and an online branch, and we maintain ATMs at all branch locations and seven non-branch locations. Details on our most recent acquisitions are provided in Note 13 to the financial statements, Recent Developments. In addition to our stand-alone offices the Bank has specialized lending units which include a real estate industries center, an agricultural credit center, and an SBA lending unit. We were close to $2.1 billion in total assets as of September 30, 2017, and for the past several years have claimed the distinction of being the largest bank headquartered in the South San Joaquin Valley. Total assets surpassed $2.3 billion subsequent to our recent acquisitions. The Bank’s deposit accounts, which totaled almost $1.8 billion at September 30, 2017, are insured by the Federal Deposit Insurance Corporation (“FDIC”) up to maximum insurable amounts. Immediately after the acquisitions, total deposits exceeded $2.0 billion.

Basis of Presentation

Basis of Presentation	9 Months Ended
	Sep. 30, 2017
Basis Of Presentation [Abstract]
Basis of Presentation	Note 2 – Basis of Presentation The accompanying unaudited consolidated financial statements have been prepared in a condensed format, and therefore do not include all of the information and footnotes required by U.S. generally accepted accounting principles (“GAAP”) for complete financial statements. The information furnished in these interim statements reflects all adjustments that are, in the opinion of Management, necessary for a fair statement of the results for such periods. Such adjustments can generally be considered as normal and recurring unless otherwise disclosed in this Form 10-Q. In preparing the accompanying financial statements, Management has taken subsequent events into consideration and recognized them where appropriate. The results of operations in the interim statements are not necessarily indicative of the results that may be expected for any other quarter, or for the full year. Certain amounts reported for 2016 have been reclassified to be consistent with the reporting for 2017. The interim financial information should be read in conjunction with the Company’s Annual Report on Form 10-K for the year ended December 31, 2016, as filed with the Securities and Exchange Commission (the “SEC”).

Current Accounting Developments

Current Accounting Developments	9 Months Ended
	Sep. 30, 2017
New Accounting Pronouncements And Changes In Accounting Principles [Abstract]
Current Accounting Developments	Note 3 – Current Accounting Developments In May 2014 the FASB issued Accounting Standards Update (“ASU”) 2014-09, Revenue from Contracts with Customers (Topic 606) In January 2016 the FASB issued ASU 2016-01, Financial Instruments–Overall: Recognition and Measurement of Financial Assets and Financial Liabilities In February 2016 the FASB issued ASU 2016-02, Leases (Topic 842) In March 2016 the FASB issued ASU 2016-09, Compensation–Stock Compensation (Topic 718): Improvements to Employee Share-Based Payment Accounting In September 2016 the FASB issued ASU 2016-13, Financial Instruments – Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments In January 2017 the FASB issued ASU 2017-01, Business Combinations (Topic 805): Clarifying the Definition of a Business In January 2017 the FASB issued ASU 2017-04, Intangibles – Goodwill and Other (Topic 350): Simplifying the Accounting for Goodwill Impairment In March 2017 the FASB issued ASU 2017-08, Receivables – Nonrefundable Fees and Other Costs (Subtopic 310-20): Premium Amortization on Purchased Callable Debt Securities In May 2017 the FASB issued ASU 2017-09, Compensation—Stock Compensation (Topic 718): Scope of Modification Accounting

Supplemental Disclosure of Cash

Supplemental Disclosure of Cash Flow Information	9 Months Ended
	Sep. 30, 2017
Supplemental Cash Flow Information [Abstract]
Supplemental Disclosure of Cash Flow Information	Note 4 – Supplemental Disclosure of Cash Flow Information During the nine months ended September 30, 2017 and 2016, cash paid for interest due on interest-bearing liabilities was $3.645 million and $2.362 million, respectively. There was $6.497 million in cash paid for income taxes during the nine months ended September 30, 2017, and $2.900 million for the nine months ended September 30, 2016. Assets totaling $648,000 and $847,000 were acquired in settlement of loans for the nine months ended September 30, 2017 and September 30, 2016, respectively. We received $99,000 in cash from the sale of foreclosed assets during the first nine months of 2017 relative to $837,000 during the first nine months of 2016, which represents sales proceeds less loans (if any) extended to finance such sales.

Share Based Compensation

Share Based Compensation	9 Months Ended
	Sep. 30, 2017
Share Based Compensation [Abstract]
Share Based Compensation	Note 5 – Share Based Compensation On March 16, 2017 the Company’s Board of Directors approved and adopted the 2017 Stock Incentive Plan (the “2017 Plan”), which became effective May 24, 2017, the date approved by the Company’s shareholders. The 2017 Plan replaced the Company’s 2007 Stock Incentive Plan (the “2007 Plan”), which expired by its own terms on March 15, 2017. Options to purchase 492,240 shares that were granted under the 2007 Plan were still outstanding as of September 30, 2017, and remain unaffected by that plan’s expiration. The 2017 Plan provides for the issuance of both “incentive” and “nonqualified” stock options to officers and employees, and of “nonqualified” stock options to non-employee directors and consultants of the Company. The 2017 Plan also provides for the issuance of restricted stock awards to these same classes of eligible participants, although no restricted stock awards have ever been issued by the Company. The total number of shares of the Company’s authorized but unissued stock reserved for issuance pursuant to awards under the 2017 Plan is 850,000 shares; no awards have yet been granted under the 2017 Plan. The dilutive impact of stock options outstanding is discussed below in Note 6, Earnings per Share. Pursuant to FASB’s standards on stock compensation, the value of each stock option granted is reflected in our income statement as employee compensation or directors’ expense by expensing its fair value as of the grant date in the case of immediately vested options, or by amortizing its grant date fair value over the vesting period for options with graded vesting. The Company is utilizing the Black-Scholes model to value stock options, and the “multiple option” approach is used to allocate the resulting valuation to actual expense. Under the multiple option approach an employee’s options for each vesting period are separately valued and amortized, which appears to be the preferred method for option grants with graded vesting. A pre-tax charge of $18,000 was reflected in the Company’s income statement during the third quarter of 2017 and $11,000 was charged during the third quarter of 2016, as expense related to stock options. For the first three quarters, the charges totaled $460,000 in 2017 and $180,000 in 2016.

Earnings per Share

Earnings per Share	9 Months Ended
	Sep. 30, 2017
Earnings Per Share [Abstract]
Earnings per Share	Note 6 – Earnings per Share The computation of earnings per share, as presented in the Consolidated Statements of Income, is based on the weighted average number of shares outstanding during each period. There were 13,839,111 weighted average shares outstanding during the third quarter of 2017, and 13,790,107 during the third quarter of 2016. There were 13,824,173 weighted average shares outstanding during the first nine months of 2017, and 13,446,567 during the first nine months of 2016. Diluted earnings per share include the effect of the potential issuance of common shares, which for the Company is limited to shares that would be issued on the exercise of “in-the-money” stock options. For the third quarter of 2017, calculations under the treasury stock method resulted in the equivalent of 174,876 shares being added to basic weighted average shares outstanding for purposes of determining diluted earnings per share, while a weighted average of 120,700 stock options were excluded from the calculation because they were underwater and thus anti-dilutive. For the third quarter of 2016 the equivalent of 114,353 shares were added in calculating diluted earnings per share, while 146,900 anti-dilutive stock options were not factored into the computation. Likewise, for the first nine months of 2017 the equivalent of 186,721 shares were added to basic weighted average shares outstanding in calculating diluted earnings per share and a weighted average of 120,700 stock options that were anti-dilutive for the period were not included, compared to the addition of the equivalent of 114,149 shares and non-inclusion of 196,900 anti-dilutive options in calculating diluted earnings per share for first nine months of 2016.

Comprehensive Income

Comprehensive Income	9 Months Ended
	Sep. 30, 2017
Comprehensive Income Net Of Tax [Abstract]
Comprehensive Income	Note 7 – Comprehensive Income As presented in the Consolidated Statements of Comprehensive Income, comprehensive income includes net income and other comprehensive income. The Company’s only source of other comprehensive income is unrealized gains and losses on available-for-sale investment securities. Gains or losses on investment securities that were realized and reflected in net income of the current period, which had previously been included in other comprehensive income as unrealized holding gains or losses in the period in which they arose, are considered to be reclassification adjustments that are excluded from other comprehensive income in the current period.

Financial Instruments with Off-

Financial Instruments with Off-Balance-Sheet Risk	9 Months Ended
	Sep. 30, 2017
Financial Instruments With Off Balance Sheet Risk [Abstract]
Financial Instruments with Off-Balance-Sheet Risk	Note 8 – Financial Instruments with Off-Balance-Sheet Risk The Company is a party to financial instruments with off‑balance‑sheet risk in the normal course of business. Those financial instruments currently consist of unused commitments to extend credit and standby letters of credit. They involve, to varying degrees, elements of risk in excess of the amount recognized in the balance sheet. The Company’s exposure to credit loss in the event of nonperformance by counterparties for commitments to extend credit and letters of credit is represented by the contractual amount of those instruments. The Company uses the same credit policies in making commitments and issuing letters of credit as it does for originating loans included on the balance sheet. The following financial instruments represent off‑balance‑sheet credit risk (dollars in thousands): September 30, 2017 December 31, 2016 Commitments to extend credit $ 639,177 $ 463,923 Standby letters of credit $ 7,936 $ 8,582 Commitments to extend credit consist primarily of the unused or unfunded portions of the following: home equity lines of credit; commercial real estate construction loans, where disbursements are made over the course of construction; commercial revolving lines of credit; mortgage warehouse lines of credit; unsecured personal lines of credit; and formalized (disclosed) deposit account overdraft lines. Commitments generally have fixed expiration dates or other termination clauses and may require payment of a fee. Since many commitments are expected to expire without being drawn upon, the unused portions of committed amounts do not necessarily represent future cash requirements. Standby letters of credit are generally unsecured and are issued by the Company to guarantee the performance of a customer to a third party, and the credit risk involved in issuing letters of credit is essentially the same as the risk involved in extending loans to customers. At September 30, 2017, the Company was also utilizing a letter of credit in the amount of $86 million issued by the Federal Home Loan Bank on the Company’s behalf as security for certain deposits and to facilitate certain credit arrangements with the Company’s customers. That letter of credit is backed by loans which are pledged to the FHLB by the Company.

Fair Value Disclosures and Repo

Fair Value Disclosures and Reporting, the Fair Value Option and Fair Value Measurements	9 Months Ended
	Sep. 30, 2017
Fair Value Disclosures [Abstract]
Fair Value Disclosures and Reporting, the Fair Value Option and Fair Value Measurements	Note 9 – Fair Value Disclosures and Reporting, the Fair Value Option and Fair Value Measurements FASB’s standards on financial instruments, and on fair value measurements and disclosures, require all entities to disclose in their financial statement footnotes the estimated fair values of financial instruments for which it is practicable to estimate such. In addition to disclosure requirements, FASB’s standard on investments requires that our debt securities which are classified as available for sale and any equity securities that have readily determinable fair values be measured and reported at fair value in our statement of financial position. Certain impaired loans are also reported at fair value, as explained in greater detail below, and foreclosed assets are carried at the lower of cost or fair value. FASB’s standard on financial instruments permits companies to report certain other financial assets and liabilities at fair value, but we have not elected the fair value option for any of those financial instruments. Fair value measurement and disclosure standards also establish a framework for measuring fair values. Fair value is defined as 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. Further, the standards establish a fair value hierarchy that encourages an entity to maximize the use of observable inputs and limit the use of unobservable inputs when measuring fair values. The standards describe three levels of inputs that may be used to measure fair values: • Level 1 • Level 2 • Level 3 Fair value estimates are made at a specific point in time based on relevant market data and information about the financial instruments. The estimates do not reflect any premium or discount that could result from offering the Company’s entire holdings of a particular financial instrument for sale at one time, nor do they attempt to estimate the value of anticipated future business related to those instruments. In addition, the tax ramifications related to realized gains and losses could have a significant effect on fair value estimates but have not been considered in determining those estimates. Because no active market exists for a significant portion of our financial instruments, fair value disclosures are based on judgments regarding current economic conditions, risk characteristics of various financial instruments and other factors. The estimates are subjective and involve uncertainties and matters of significant judgment, and therefore cannot be determined with precision. Changes in assumptions could significantly alter the fair values presented. The following methods and assumptions were used by the Company to estimate its financial instrument fair values disclosed at September 30, 2017 and December 31, 2016: • Cash and cash equivalents and fed funds sold • Investment securities • Other investments • Loans and leases • Loans held for sale • Collateral-dependent impaired loans • Cash surrender value of life insurance policies • Deposits • Short-term borrowings • Long-term borrowings • Subordinated debentures • Commitments to extend credit and letters of credit Estimated fair values for the Company’s financial instruments are as follows, as of the dates noted: Fair Value of Financial Instruments (dollars in thousands, unaudited) September 30, 2017 Estimated Fair Value Carrying Amount Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Total Financial assets: Cash and cash equivalents $ 54,607 $ 54,610 $ — $ — $ 54,610 Investment securities available for sale 583,200 — 583,200 — 583,200 Loans and leases, net held for investment 1,305,507 — 1,317,560 — 1,317,560 Collateral dependent impaired loans 39 — 39 — 39 Cash surrender value of life insurance policies 45,270 — 45,270 — 45,270 Other investments 8,741 — 8,741 — 8,741 Accrued interest receivable 6,676 — 6,676 — 6,676 Financial liabilities: Deposits: Noninterest-bearing $ 571,509 $ 571,509 $ — $ — $ 571,509 Interest-bearing 1,208,070 — 1,207,808 — 1,207,808 Fed funds purchased and repurchase agreements 10,279 — 10,279 — 10,279 Short-term borrowings 10,500 — 10,500 — 10,500 Subordinated debentures 34,544 — 24,095 — 24,095 Accrued interest payable 175 — 175 — 175 Notional Amount Off-balance-sheet financial instruments: Commitments to extend credit $ 639,177 Standby letters of credit 7,936 December 31, 2016 Estimated Fair Value Carrying Amount Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Total Financial assets: Cash and cash equivalents $ 120,442 $ 120,442 $ — $ — $ 120,442 Investment securities available for sale 530,083 1,546 528,537 — 530,083 Loans and leases, net held for investment 1,255,348 — 1,266,447 — 1,266,447 Collateral dependent impaired loans 406 — 406 — 406 Cash surrender value of life insurance policies 43,706 — 43,706 — 43,706 Other investments 8,506 — 8,506 — 8,506 Accrued interest receivable 6,354 — 6,354 — 6,354 Financial liabilities: Deposits: Noninterest-bearing $ 524,552 $ 524,552 $ — $ — $ 524,552 Interest-bearing 1,170,919 — 1,171,188 — 1,171,188 Fed funds purchased and repurchase agreements 8,094 — 8,094 — 8,094 Short-term borrowings 65,000 — 65,000 — 65,000 Subordinated debentures 34,410 — 22,633 — 22,633 Accrued interest payable 188 — 188 — 188 Notional Amount Off-balance-sheet financial instruments: Commitments to extend credit $ 463,923 Standby letters of credit 8,582 For financial asset categories that were actually reported at fair value as of September 30, 2017 and December 31, 2016, the Company used the following methods and significant assumptions: • Investment securities • Collateral-dependent impaired loans • Foreclosed assets Assets reported at fair value on a recurring basis are summarized below: Fair Value Measurements - Recurring (dollars in thousands, unaudited) Fair Value Measurements at September 30, 2017, using Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Total Realized Gain/(Loss) (Level 3) Securities: US Government agencies $ — $ 24,422 $ — $ 24,422 $ — Mortgage-backed securities — 417,038 — 417,038 — State and political subdivisions — 141,740 — 141,740 — Equity securities — — — — — Total available-for-sale securities $ — $ 583,200 $ — $ 583,200 $ — Fair Value Measurements at December 31, 2016, using Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Total Realized Gain/(Loss) (Level 3) Securities: US Government agencies $ — $ 26,468 $ — $ 26,468 $ — Mortgage-backed securities — 387,876 — 387,876 — State and political subdivisions — 114,193 — 114,193 — Equity securities 1,546 — — 1,546 — Total available-for-sale securities $ 1,546 $ 528,537 $ — $ 530,083 $ — Assets reported at fair value on a nonrecurring basis are summarized below: Fair Value Measurements - Nonrecurring (dollars in thousands, unaudited) Fair Value Measurements at September 30, 2017, using Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Total Impaired loans Real Estate: 1-4 family residential construction $ — $ — $ — $ — Other construction/land — — — — 1-4 family - closed-end — 12 — 12 Equity lines — 14 — 14 Multi-family residential — — — — Commercial real estate - owner occupied — — — — Commercial real estate - non-owner occupied — — — — Farmland — — — — Total real estate — 26 — 26 Agriculture — — — — Commercial and industrial — — — — Consumer loans — 13 — 13 Total impaired loans — 39 — 39 Foreclosed assets $ — $ 2,674 $ — $ 2,674 Total assets measured on a nonrecurring basis $ — $ 2,713 $ — $ 2,713 Fair Value Measurements at December 31, 2016, using Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Total Impaired loans Real Estate: 1-4 family residential construction $ — $ — $ — $ — Other construction/land — — — — 1-4 family - closed-end — — — — Equity lines — — — — Multi-family residential — — — — Commercial real estate - owner occupied — 281 — 281 Commercial real estate - non-owner occupied — 67 — 67 Farmland — — — — Total real estate — 348 — 348 Agriculture — — — — Commercial and industrial — — — — Consumer loans — 58 — 58 Total impaired loans — $ 406 — 406 Foreclosed assets $ — $ 2,225 $ — $ 2,225 Total assets measured on a nonrecurring basis $ — $ 2,631 $ — $ 2,631 The table above includes collateral-dependent impaired loan balances for which a specific reserve has been established or on which a write-down has been taken. Information on the Company’s total impaired loan balances and specific loss reserves associated with those balances is included in Note 11 below, and in Management’s Discussion and Analysis of Financial Condition and Results of Operation in the “Nonperforming Assets” and “Allowance for Loan and Lease Losses” sections. The unobservable inputs are based on Management’s best estimates of appropriate discounts in arriving at fair market value. Adjusting any of those inputs could result in a significantly lower or higher fair value measurement. For example, an increase or decrease in actual loss rates would create a directionally opposite change in the fair value of unsecured impaired loans.

Investments

Investments	9 Months Ended
	Sep. 30, 2017
Investments Debt And Equity Securities [Abstract]
Investments	Note 10 – Investments Investment Securities Although the Company currently has the intent and the ability to hold the securities in its investment portfolio to maturity, the securities are all marketable and are classified as “available for sale” to allow maximum flexibility with regard to interest rate risk and liquidity management. Pursuant to FASB’s guidance on accounting for debt and equity securities, available for sale securities are carried on the Company’s financial statements at their estimated fair market values, with monthly tax-effected “mark-to-market” adjustments made vis-à-vis accumulated other comprehensive income in shareholders’ equity. The amortized cost and estimated fair value of investment securities available-for-sale are as follows: Amortized Cost And Estimated Fair Value (dollars in thousands, unaudited) September 30, 2017 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Estimated Fair Value US Government agencies $ 24,574 $ 112 $ (264 ) $ 24,422 Mortgage-backed securities 418,961 1,416 (3,339 ) 417,038 State and political subdivisions 138,621 3,401 (282 ) 141,740 Equity securities — — — — Total securities $ 582,156 $ 4,929 $ (3,885 ) $ 583,200 December 31, 2016 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Estimated Fair Value US Government agencies $ 26,926 $ 48 $ (506 ) $ 26,468 Mortgage-backed securities 391,555 1,492 (5,171 ) 387,876 State and political subdivisions 114,140 1,519 (1,466 ) 114,193 Equity securities 500 1,046 — 1,546 Total securities $ 533,121 $ 4,105 $ (7,143 ) $ 530,083 At September 30, 2017 and December 31, 2016, the Company had 329 securities and 431 securities, respectively, with gross unrealized losses. Management has evaluated those securities as of the respective dates, and does not believe that any of the unrealized losses are other than temporary. Gross unrealized losses on our investment securities as of the indicated dates are disclosed in the table below, categorized by investment type and by the duration of time that loss positions on individual securities have continuously existed (over or under twelve months). Investment Portfolio - Unrealized Losses (dollars in thousands, unaudited) September 30, 2017 Less than twelve months Twelve months or more Gross Unrealized Losses Fair Value Gross Unrealized Losses Fair Value US Government agencies $ (136 ) $ 12,379 $ (128 ) $ 4,512 Mortgage-backed securities (1,906 ) 231,968 (1,433 ) 79,052 State and political subdivisions (120 ) 13,042 (162 ) 7,018 Total $ (2,162 ) $ 257,389 $ (1,723 ) $ 90,582 December 31, 2016 Less than twelve months Twelve months or more Gross Unrealized Losses Fair Value Gross Unrealized Losses Fair Value US Government agencies $ (500 ) $ 21,056 $ (6 ) $ 711 Mortgage-backed securities (4,303 ) 271,276 (868 ) 43,570 State and political subdivisions (1,466 ) 49,195 — — Total $ (6,269 ) $ 341,527 $ (874 ) $ 44,281 The table below summarizes the Company’s gross realized gains and losses as well as gross proceeds from the sales of securities, for the periods indicated: Investment Portfolio - Realized Gains/(Losses) (dollars in thousands, unaudited) Three months ended September 30, Nine months ended September 30, 2017 2016 2017 2016 Proceeds from sales, calls and maturities of securities available for sale $ 5,865 $ 19,723 $ 23,490 $ 24,948 Gross gains on sales, calls and maturities of securities available for sale $ 918 $ 90 $ 1,024 $ 250 Gross losses on sales, calls and maturities of securities available for sale — — (40 ) (38 ) Net gains on sale of securities available for sale $ 918 $ 90 $ 984 $ 212 The amortized cost and estimated fair value of investment securities available-for-sale at September 30, 2017 and December 31, 2016 are shown below, grouped by the remaining time to contractual maturity dates. The expected life of investment securities may not be consistent with contractual maturity dates, since the issuers of the securities might have the right to call or prepay obligations with or without penalties. Estimated Fair Value of Contractual Maturities (dollars in thousands, unaudited) September 30, 2017 Amortized Cost Fair Value Maturing within one year $ 7,657 $ 7,736 Maturing after one year through five years 252,046 252,582 Maturing after five years through ten years 44,786 45,702 Maturing after ten years 75,744 76,935 Securities not due at a single maturity date: US Government agencies collateralized by mortgage obligations 201,923 200,245 Other securities - - $ 582,156 $ 583,200 December 31, 2016 Amortized Cost Fair Value Maturing within one year $ 8,488 $ 8,573 Maturing after one year through five years 260,387 259,535 Maturing after five years through ten years 50,823 50,687 Maturing after ten years 47,132 46,190 Securities not due at a single maturity date: US Government agencies collateralized by mortgage obligations 165,791 163,552 Other securities 500 1,546 $ 533,121 $ 530,083 At September 30, 2017, the Company’s investment portfolio included 330 “muni” bonds issued by government municipalities and agencies located within 32 different states, with an aggregate fair value of $142 million. The largest exposure to any single municipality or agency was a combined $2.588 million (fair value) in general obligation bonds issued by the Lindsay (CA) Unified School District. The Company’s investments in bonds issued by states, municipalities and political subdivisions are evaluated in accordance with Supervision and Regulation Letter 12-15 issued by the Board of Governors of the Federal Reserve System, “Investing in Securities without Reliance on Nationally Recognized Statistical Rating Organization Ratings,” and other regulatory guidance. Credit ratings are considered in our analysis only as a guide to the historical default rate associated with similarly-rated bonds. There have been no significant differences in our internal analyses compared with the ratings assigned by the third party credit rating agencies. The following table summarizes the amortized cost and fair values of general obligation and revenue bonds in the Company’s investment securities portfolio at the indicated dates, identifying the state in which the issuing municipality or agency operates for our largest geographic concentrations: Revenue and General Obligation Bonds by Location (dollars in thousands, unaudited) September 30, 2017 December 31, 2016 Amortized Fair Market Amortized Fair Market General obligation bonds Cost Value Cost Value State of issuance Texas $ 32,352 $ 32,826 $ 20,170 $ 19,875 California 26,677 27,638 25,457 25,799 Washington 13,108 13,392 5,928 5,970 Ohio 9,355 9,464 9,412 9,324 Illinois 8,388 8,565 9,873 9,871 Other (21 states) 24,236 24,831 22,637 22,698 Total General Obligation Bonds 114,116 116,716 93,477 93,537 Revenue bonds State of issuance Texas 7,105 7,248 5,727 5,702 California 1,029 1,046 1,283 1,298 Washington 2,108 2,177 1,302 1,299 Ohio — — 261 261 Illinois 284 290 287 284 Other (12 states) 13,979 14,263 11,803 11,812 Total Revenue Bonds 24,505 25,024 20,663 20,656 Total Obligations of States and Political Subdivisions $ 138,621 $ 141,740 $ 114,140 $ 114,193 The revenue bonds in the Company’s investment securities portfolios were issued by government municipalities and agencies to fund public services such as utilities (water, sewer, and power), educational facilities, and general public and economic improvements. The primary sources of revenue for these bonds are delineated in the table below, which shows the amortized cost and fair market values for the largest revenue concentrations as of the indicated dates. Revenue Bonds by Type (dollars in thousands, unaudited) September 30, 2017 December 31, 2016 Amortized Fair Market Amortized Fair Market Revenue bonds Cost Value Cost Value Revenue source: Water $ 7,236 $ 7,362 $ 4,788 $ 4,722 Sales Tax 2,963 3,005 2,981 2,927 College & University 2,619 2,710 3,401 3,472 Lease 2,320 2,387 3,119 3,123 Local Housing 1,535 1,552 168 167 Other (13 sources) 7,832 8,008 6,206 6,245 Total Revenue Bonds $ 24,505 $ 25,024 $ 20,663 $ 20,656 Low-Income Housing Tax Credit (“LIHTC”) Fund Investments The Company has the ability to invest in limited partnerships which own housing projects that qualify for federal and/or California state tax credits, by mandating a specified percentage of low-income tenants for each project. The tax credits flow through to investors, supplementing any returns that might be derived from an increase in property values. Because rent levels are lower than standard market rents and the projects are generally highly leveraged, each project also typically generates tax-deductible operating losses that are allocated to the limited partners. The Company invested in nine different LIHTC fund limited partnerships from 2001 through 2017, all of which were California-focused funds that help the Company meet its obligations under the Community Reinvestment Act. We utilize the cost method of accounting for our LIHTC fund investments, under which we initially record on our balance sheet an asset that represents the total cash expected to be invested over the life of the partnership. Any commitments or contingent commitments for future investment are reflected as a liability. The income statement reflects tax credits and any other tax benefits from these investments “below the line” within our income tax provision, while the initial book value of the investment is amortized on a straight-line basis as an offset to non-interest income, over the time period in which the tax credits and tax benefits are expected to be received. As of September 30, 2017 our total LIHTC investment book balance was $8.9 million, which includes $3.5 million in remaining commitments for additional capital contributions. There were $533,000 in tax credits derived from our LIHTC investments that were recognized during the nine months ended September 30, 2017, and amortization expense of $837,000 associated with those investments was netted against pre-tax non-interest income for the same time period. Our LIHTC investments are evaluated annually for potential impairment, and we have concluded that the carrying value of the investments is stated fairly and is not impaired.

Credit Quality and Nonperformin

Credit Quality and Nonperforming Assets	9 Months Ended
	Sep. 30, 2017
Credit Quality And Nonperforming Assets [Abstract]
Credit Quality and Nonperforming Assets	Note 11 – Credit Quality and Nonperforming Assets Credit Quality Classifications The Company monitors the credit quality of loans on a continuous basis using the regulatory and accounting classifications of pass, special mention, substandard and impaired to characterize the associated credit risk. Balances classified as “loss” are immediately charged off. The Company conforms to the following definitions for its risk classifications: • Pass • Special mention • Substandard • Impaired Credit quality classifications for the Company’s loan balances were as follows, as of the dates indicated: Credit Quality Classifications (dollars in thousands, unaudited) September 30, 2017 Pass Special Mention Substandard Impaired Total Real Estate: 1-4 family residential construction $ 53,035 $ — $ — $ — $ 53,035 Other construction/land 46,317 281 — 562 47,160 1-4 family - closed end 148,652 626 794 4,862 154,934 Equity lines 33,411 3,555 538 4,618 42,122 Multi-family residential 31,020 — — 394 31,414 Commercial real estate - owner occupied 253,912 4,343 2,766 1,844 262,865 Commercial real estate - non-owner occupied 275,251 4,464 3,154 1,668 284,537 Farmland 143,742 996 515 297 145,550 Total real estate 985,340 14,265 7,767 14,245 1,021,617 Agricultural 48,663 652 — — 49,315 Commercial and industrial 98,822 10,539 679 1,325 111,365 Mortgage warehouse 119,031 — — — 119,031 Consumer loans 8,609 320 68 1,300 10,297 Total gross loans and leases $ 1,260,465 $ 25,776 $ 8,514 $ 16,870 $ 1,311,625 December 31, 2016 Pass Special Mention Substandard Impaired Total Real Estate: 1-4 family residential construction $ 32,417 $ — $ — $ — $ 32,417 Other construction/land 38,699 888 — 1,063 40,650 1-4 family - closed end 129,726 624 403 6,390 137,143 Equity lines 35,159 3,165 698 4,421 43,443 Multi-family residential 31,058 — — 573 31,631 Commercial real estate - owner occupied 243,366 4,991 2,892 2,286 253,535 Commercial real estate - non-owner occupied 233,584 5,597 3,220 1,797 244,198 Farmland 132,613 1,020 808 39 134,480 Total real estate 876,622 16,285 8,021 16,569 917,497 Agricultural 45,249 891 — 89 46,229 Commercial and industrial 107,404 13,186 732 2,273 123,595 Mortgage warehouse 163,045 — — — 163,045 Consumer loans 10,303 191 9 1,662 12,165 Total gross loans and leases $ 1,202,623 $ 30,553 $ 8,762 $ 20,593 $ 1,262,531 Past Due and Nonperforming Assets Nonperforming assets are comprised of loans for which the Company is no longer accruing interest, and foreclosed assets. The Company’s foreclosed assets can include mobile homes and/or OREO, which consists of commercial and/or residential real estate properties acquired by foreclosure or similar means that the Company is offering or will offer for sale. Foreclosed assets totaled $2.674 million at September 30, 2017, which includes one single-family residential property with a carrying value of $51,000 and two relatively low-value mobile homes, and $2.225 million at December 31, 2016, which includes two relatively low-value mobile homes but no single-family residential properties. Nonperforming loans and leases result when reasonable doubt surfaces with regard to the ability of the Company to collect all principal and interest. At that point, we stop accruing interest on the loan or lease in question and reverse any previously-recognized interest to the extent that it is uncollected or associated with interest-reserve loans. Any asset for which principal or interest has been in default for 90 days or more is also placed on non-accrual status even if interest is still being received, unless the asset is both well secured and in the process of collection. An aging of the Company’s loan balances is presented in the following tables, by number of days past due as of the indicated dates: Loan Portfolio Aging (dollars in thousands, unaudited) September 30, 2017 30-59 Days Past Due 60-89 Days Past Due 90 Days Or More Past Due (1) Total Past Due Current Total Financing Receivables Non-Accrual Loans (2) Real Estate: 1-4 family residential construction $ — $ — $ — $ — $ 53,035 $ 53,035 $ — Other construction/land — — — — 47,160 47,160 83 1-4 family - closed end 298 90 540 928 154,006 154,934 886 Equity lines 334 — 203 537 41,585 42,122 893 Multi-family residential — — — — 31,414 31,414 — Commercial real estate - owner occupied 191 — 114 305 262,560 262,865 1,148 Commercial real estate - non-owner occupied — — — — 284,537 284,537 — Farmland — — — — 145,550 145,550 297 Total real estate 823 90 857 1,770 1,019,847 1,021,617 3,307 Agricultural — — — — 49,315 49,315 — Commercial and industrial 463 — 519 982 110,383 111,365 734 Mortgage warehouse lines — — — — 119,031 119,031 — Consumer 206 15 — 221 10,076 10,297 77 Total gross loans and leases $ 1,492 $ 105 $ 1,376 $ 2,973 $ 1,308,652 $ 1,311,625 $ 4,118 (1) As of September 30, 2017 there were no loans over 90 days past due and still accruing. (2) Included in total financing receivables December 31, 2016 30-59 Days Past Due 60-89 Days Past Due 90 Days Or More Past Due (1) Total Past Due Current Total Financing Receivables Non-Accrual Loans (2) Real Estate: 1-4 family residential construction $ — $ — $ — $ — $ 32,417 $ 32,417 $ — Other construction/land — — — — 40,650 40,650 558 1-4 family - closed end 99 23 575 697 136,446 137,143 963 Equity lines 397 — 320 717 42,726 43,443 1,926 Multi-family residential — — — — 31,631 31,631 — Commercial real estate - owner occupied 338 — 28 366 253,169 253,535 1,572 Commercial real estate - non-owner occupied — — — — 244,198 244,198 67 Farmland — — — — 134,480 134,480 39 Total real estate 834 23 923 1,780 915,717 917,497 5,125 Agricultural — — 89 89 46,140 46,229 89 Commercial and industrial 168 3 292 463 123,132 123,595 692 Mortgage warehouse lines — — — — 163,045 163,045 — Consumer 94 9 52 155 12,010 12,165 459 Total gross loans and leases $ 1,096 $ 35 $ 1,356 $ 2,487 $ 1,260,044 $ 1,262,531 $ 6,365 (1) As of December 31, 2016 there were no loans over 90 days past due and still accruing. (2) Included in total financing receivables Troubled Debt Restructurings A loan that is modified for a borrower who is experiencing financial difficulty is classified as a troubled debt restructuring if the modification constitutes a concession. At September 30, 2017, the Company had a total of $14.3 million in TDRs, including $1.6 million in TDRs that were on non-accrual status. Generally, a non-accrual loan that has been modified as a TDR remains on non-accrual status for a period of at least six months to demonstrate the borrower’s ability to comply with the modified terms. However, performance prior to the modification, or significant events that coincide with the modification, could result in a loan’s return to accrual status after a shorter performance period or even at the time of loan modification. Regardless of the period of time that has elapsed, if the borrower’s ability to meet the revised payment schedule is uncertain then the loan will be kept on non-accrual status. Moreover, a TDR is generally considered to be in default when it appears that the customer will not likely be able to repay all principal and interest pursuant to restructured terms. The Company may agree to different types of concessions when modifying a loan or lease. The tables below summarize TDRs which were modified during the noted periods, by type of concession: Troubled Debt Restructurings, by Type of Loan Modification (dollars in thousands, unaudited) Three months ended September 30, 2017 Term Modification Interest Only Modification Rate & Term Modification Total Real Estate: Other construction/land $ — $ — $ — $ — 1-4 family - closed-end — — 250 250 Equity lines 40 — 96 136 Multi-family residential — — — — Commercial real estate - owner occupied 529 — — 529 Farmland — — — — Total real estate loans 569 — 346 915 Commercial and industrial — — — — Consumer loans 7 — — 7 $ 576 $ — $ 346 $ 922 Three months ended September 30, 2016 Term Modification Interest Only Modification Rate & Term Modification Total Real Estate: Other construction/land $ — $ — $ — $ — 1-4 family - closed-end — — 178 178 Equity lines 135 — 97 232 Multi-family residential — — — — Commercial real estate - owner occupied — — — — Farmland — — 258 258 Total real estate loans 135 — 533 668 Commercial and industrial — — — — Consumer loans 5 — — 5 $ 140 $ — $ 533 $ 673 Troubled Debt Restructurings, by Type of Loan Modification (dollars in thousands, unaudited) Nine months ended September 30, 2017 Term Modification Interest Only Modification Rate & Term Modification Total Real Estate: Other construction/land $ — $ — $ — $ — 1-4 family - closed-end — — 340 340 Equity lines 643 — 96 739 Multi-family residential — — — — Commercial real estate - owner occupied 529 — — 529 Farmland — — — — Total real estate loans 1,172 — 436 1,608 Commercial and industrial 15 — — 15 Consumer loans 7 — — 7 $ 1,194 $ — $ 436 $ 1,630 Nine months ended September 30, 2016 Term Modification Interest Only Modification Rate & Term Modification Total Real Estate: Other construction/land $ 17 $ — $ — $ 17 1-4 family - closed-end — 547 437 984 Equity lines 1,415 — 97 1,512 Multi-family residential — — 132 132 Commercial real estate - owner occupied — — 266 266 Farmland — — 258 258 Total real estate loans 1,432 547 1,190 3,169 Commercial and industrial — — — — Consumer loans 25 — 60 85 $ 1,457 $ 547 $ 1,250 $ 3,254 The following tables present, by class, additional details related to loans classified as TDRs during the referenced periods, including the recorded investment in the loan both before and after modification and balances that were modified during the period: Troubled Debt Restructurings (dollars in thousands, unaudited) Three months ended September 30, 2017 Pre- Modification Post- Modification Number of Loans Outstanding Recorded Investment Outstanding Recorded Investment Reserve Difference⁽¹⁾ Reserve Real Estate: Other construction/land 0 $ — $ — $ — $ — 1-4 family - closed-end 3 250 250 — 8 Equity lines 2 136 136 3 2 Multi-family residential 0 — — — — Commercial real estate - owner occupied 1 529 529 — 6 Farmland 0 — — — — Total real estate loans 915 915 3 16 Commercial and industrial 0 — — — — Consumer loans 1 7 7 — 2 $ 922 $ 922 $ 3 $ 18 (1) This represents the change in the ALLL reserve for these credits measured as the difference between the specific post-modification impairment reserve and the pre-modification reserve calculated under our general allowance for loan loss methodology. Three months ended September 30, 2016 Pre- Modification Post- Modification Number of Loans Outstanding Recorded Investment Outstanding Recorded Investment Reserve Difference⁽¹⁾ Reserve Real Estate: Other construction/land 0 $ — $ — $ — $ — 1-4 family - closed-end 3 178 178 41 80 Equity lines 3 232 232 15 17 Multi-family residential 0 — — — — Commercial real estate - owner occupied 0 — — — — Farmland 1 258 258 (26 ) - Total real estate loans 668 668 30 97 Commercial and industrial 0 — — — — Consumer loans 1 4 5 — — $ 672 $ 673 $ 30 $ 97 (1) This represents the change in the ALLL reserve for these credits measured as the difference between the specific post-modification impairment reserve and the pre-modification reserve calculated under our general allowance for loan loss methodology. Troubled Debt Restructurings (dollars in thousands, unaudited) Nine months ended September 30, 2017 Pre- Modification Post- Modification Number of Loans Outstanding Recorded Investment Outstanding Recorded Investment Reserve Difference⁽¹⁾ Reserve Real Estate: Other construction/land 0 $ — $ — $ — $ — 1-4 family - closed-end 6 340 340 32 12 Equity lines 7 739 739 85 25 Multi-family residential 0 — — — — Commercial real estate - owner occupied 1 529 529 — 6 Farmland 0 — — — — Total real estate loans 1,608 1,608 117 43 Commercial and industrial 1 15 15 — — Consumer loans 1 7 7 — 2 $ 1,630 $ 1,630 $ 117 $ 45 (1) This represents the change in the ALLL reserve for these credits measured as the difference between the specific post-modification impairment reserve and the pre-modification reserve calculated under our general allowance for loan loss methodology. Nine months ended September 30, 2016 Pre- Modification Post- Modification Number of Loans Outstanding Recorded Investment Outstanding Recorded Investment Reserve Difference⁽¹⁾ Reserve Real Estate: Other construction/land 1 $ 17 $ 17 $ — $ 2 1-4 family - closed-end 8 984 984 116 107 Equity lines 13 1,512 1,512 (27 ) 46 Multi-family residential 1 132 132 — 6 Commercial real estate - owner occupied 1 266 266 — 4 Farmland 1 258 258 (26 ) — Total real estate loans 3,169 3,169 63 165 Commercial and industrial 0 — — — — Consumer loans 4 84 85 (7 ) 6 $ 3,253 $ 3,254 $ 56 $ 171 (1) This represents the change in the ALLL reserve for these credits measured as the difference between the specific post-modification impairment reserve and the pre-modification reserve calculated under our general allowance for loan loss methodology. The company had no finance receivables modified as TDRs within the previous twelve months that defaulted or were charged off during the three- or nine-month periods ended September 30, 2017 and 2016, respectively. Purchased Credit Impaired Loans The Company may acquire loans which show evidence of credit deterioration since origination. These purchased credit impaired (“PCI”) loans are recorded at the amount paid, since there is no carryover of the seller’s allowance for loan losses. Potential losses on PCI loans subsequent to acquisition are recognized by an increase in the allowance for loan losses. PCI loans are accounted for individually or are aggregated into pools of loans based on common risk characteristics. The Company projects the amount and timing of expected cash flows, and expected cash receipts in excess of the amount paid for the loan(s) are recorded as interest income over the remaining life of the loan or pool of loans (accretable yield). The excess of contractual principal and interest over expected cash flows is not recorded (nonaccretable difference). Expected cash flows are periodically re-evaluated throughout the life of the loan or pool of loans. If the present value of the expected cash flows is determined at any time to be less than the carrying amount, a reserve is recorded. If the present value of the expected cash flows is greater than the carrying amount, it is recognized as part of future interest income. Our acquisitions of Santa Clara Valley Bank in the fourth quarter of 2014 and Coast Bancorp in the third quarter of 2016 included certain loans which have shown evidence of credit deterioration since origination, and for which it was probable at acquisition that all contractually required payments would not be collected. The carrying amount and unpaid principal balance of those PCI loans was as follows, as of the dates indicated: Purchased Credit Impaired Loans: (dollars in thousands, unaudited) September 30, 2017 Unpaid Principal Balance Carrying Value Real estate secured $ 254 $ 37 Commercial and industrial 8 - Total purchased credit impaired loans $ 262 $ 37 December 31, 2016 Unpaid Principal Balance Carrying Value Real estate secured $ 712 $ 47 Commercial and industrial 23 — Total purchased credit impaired loans $ 735 $ 47 An allowance for loan losses totaling $130,000 was allocated for PCI loans as of September 30, 2017, as compared to $58,000 at December 31, 2016. We also recorded approximately $6,000 in discount accretion on PCI loans during the nine months ended September 30, 2017.

Allowance for Loan and Lease Lo

Allowance for Loan and Lease Losses	9 Months Ended
	Sep. 30, 2017
Provision For Loan And Lease Losses [Abstract]
Allowance for Loan and Lease Losses	Note 12 – Allowance for Loan and Lease Losses The Company’s allowance for loan and lease losses, a contra-asset, is established through a provision for loan and lease losses. The allowance is maintained at a level that is considered adequate to absorb probable losses on certain specifically identified impaired loans, as well as probable incurred losses inherent in the remaining loan portfolio. Specifically identifiable and quantifiable losses are immediately charged off against the allowance; recoveries are generally recorded only when cash payments are received subsequent to the charge off. We employ a systematic methodology, consistent with FASB guidelines on loss contingencies and impaired loans, for determining the appropriate level of the allowance for loan and lease losses and adjusting it to that level at least quarterly. Pursuant to our methodology, impaired loans and leases are individually analyzed and a criticized asset action plan is completed specifying the financial status of the borrower and, if applicable, the characteristics and condition of collateral and any associated liquidation plan. A specific loss allowance is created for each impaired loan, if necessary. The following tables disclose the unpaid principal balance, recorded investment, average recorded investment, and interest income recognized for impaired loans on our books as of the dates indicated. Balances are shown by loan type, and are further broken out by those that required an allowance and those that did not, with the associated allowance disclosed for those that required such. Included in the valuation allowance for impaired loans shown in the tables below are specific reserves allocated to TDRs, totaling $886,000 at September 30, 2017 and $1.048 million at December 31, 2016. Impaired Loans (dollars in thousands, unaudited) September 30, 2017 Unpaid Principal Balance (1) Recorded Investment (2) Related Allowance Average Recorded Investment Interest Income Recognized (3) With an allowance recorded Real Estate: Other construction/land $ 688 $ 533 $ 31 $ 772 $ 33 1-4 family - closed-end 6,108 4,160 88 6,933 314 Equity lines 4,404 4,318 327 4,550 113 Multi-family residential 394 394 30 412 17 Commercial real estate- owner occupied 519 400 136 524 30 Commercial real estate- non-owner occupied 1,815 1,668 34 1,907 95 Total real estate 13,928 11,473 646 15,098 602 Agriculture — — — — — Commercial and industrial 739 707 170 1,826 74 Consumer loans 1,280 1,270 230 1,461 75 15,947 13,450 1,046 18,385 751 With no related allowance recorded Real Estate: Other construction/land 29 29 — 34 — 1-4 family - closed-end 760 702 — 828 2 Equity lines 329 300 — 333 — Commercial real estate- owner occupied 1,445 1,444 — 1,808 8 Commercial real estate- non-owner occupied 10 — — 28 — Farmland 297 297 — 328 — Total real estate 2,870 2,772 — 3,359 10 Agriculture 132 — — 397 — Commercial and industrial 619 618 — 854 — Consumer loans 155 30 — 238 — 3,776 3,420 — 4,848 10 Total $ 19,723 $ 16,870 $ 1,046 $ 23,233 $ 761 (1) Contractual principal balance due from customer. (2) Principal balance on Company's books, less any direct charge offs. (3) Interest income is recognized on performing balances on a regular accrual basis. Impaired Loans (dollars in thousands, unaudited) December 31, 2016 Unpaid Principal Balance (1) Recorded Investment (2) Related Allowance Average Recorded Investment Interest Income Recognized (3) With an allowance recorded Real Estate: Other construction/land $ 854 $ 699 $ 20 $ 624 $ 14 1-4 family - closed-end 7,730 5,783 163 8,008 462 Equity lines 3,991 3,906 214 4,110 49 Multi-family residential 573 573 7 588 50 Commercial real estate- owner occupied 1,287 1,287 49 1,641 14 Commercial real estate- non-owner occupied 1,877 1,730 35 1,969 131 Total real estate 16,312 13,978 488 16,940 720 Agriculture 24 24 24 24 — Commercial and industrial 2,211 2,211 608 2,652 99 Consumer loans 1,633 1,633 287 1,847 94 20,180 17,846 1,407 21,463 913 With no related allowance recorded Real Estate: Other construction/land 364 364 — 374 27 1-4 family - closed-end 666 607 — 685 3 Equity lines 544 515 — 550 — Commercial real estate- owner occupied 999 999 — 1,773 98 Commercial real estate- non-owner occupied 77 67 — 85 — Farmland 39 39 — 50 — Total real estate 2,689 2,591 — 3,517 128 Agriculture 65 65 65 Commercial and industrial 62 62 — 277 — Consumer loans 148 29 — 238 — 2,964 2,747 — 4,097 128 Total $ 23,144 $ 20,593 $ 1,407 $ 25,560 $ 1,041 (1) Contractual principal balance due from customer. (2) Principal balance on Company's books, less any direct charge offs. (3) Interest income is recognized on performing balances on a regular accrual basis. The specific loss allowance for an impaired loan generally represents the difference between the book value of the loan and either the fair value of underlying collateral less estimated disposition costs, or the loan’s net present value as determined by a discounted cash flow analysis. The discounted cash flow approach is typically used to measure impairment on loans for which it is anticipated that repayment will be provided from cash flows other than those generated solely by the disposition or operation of underlying collateral. However, historical loss rates may be used to determine a specific loss allowance if they indicate a higher potential reserve need than the discounted cash flow analysis. Any change in impairment attributable to the passage of time is accommodated by adjusting the loss allowance accordingly. For loans where repayment is expected to be provided by the disposition or operation of the underlying collateral, impairment is measured using the fair value of the collateral. If the collateral value, net of the expected costs of disposition where applicable, is less than the loan balance, then a specific loss reserve is established for the shortfall in collateral coverage. If the discounted collateral value is greater than or equal to the loan balance, no specific loss reserve is required. At the time a collateral-dependent loan is designated as nonperforming, a new appraisal is ordered and typically received within 30 to 60 days if a recent appraisal is not already available. We generally use external appraisals to determine the fair value of the underlying collateral for nonperforming real estate loans, although the Company’s licensed staff appraisers may update older appraisals based on current market conditions and property value trends. Until an updated appraisal is received, the Company uses the existing appraisal to determine the amount of the specific loss allowance that may be required. The specific loss allowance is adjusted, as necessary, once a new appraisal is received. Updated appraisals are generally ordered at least annually for collateral-dependent loans that remain impaired. Current appraisals were available or in process for all of the Company’s impaired real estate loan balances at September 30, 2017. Furthermore, the Company analyzes collateral-dependent loans on at least a quarterly basis, to determine if any portion of the recorded investment in such loans can be identified as uncollectible and would therefore constitute a confirmed loss. All amounts deemed to be uncollectible are promptly charged off against the Company’s allowance for loan and lease losses, with the loan then carried at the fair value of the collateral, as appraised, less estimated costs of disposition if applicable. Once a charge-off or write-down is recorded, it will not be restored to the loan balance on the Company’s accounting books. Our methodology also provides for the establishment of a “general” allowance for probable incurred losses inherent in loans and leases that are not impaired. Unimpaired loan balances are segregated by credit quality, and are then evaluated in pools with common characteristics. At the present time, pools are based on the same segmentation of loan types presented in our regulatory filings. While this methodology utilizes historical loss data and other measurable information, the credit classification of loans and the establishment of the allowance for loan and lease losses are both to some extent based on Management’s judgment and experience. Our methodology incorporates a variety of risk considerations, both quantitative and qualitative, in establishing an allowance for loan and lease losses that Management believes is appropriate at each reporting date. Quantitative information includes our historical loss experience, delinquency and charge-off trends, and current collateral values. Qualitative factors include the general economic environment in our markets and, in particular, the condition of the agricultural industry and other key industries. Lending policies and procedures (including underwriting standards), the experience and abilities of lending staff, the quality of loan review, credit concentrations (by geography, loan type, industry and collateral type), the rate of loan portfolio growth, and changes in legal or regulatory requirements are additional factors that are considered. The total general reserve established for probable incurred losses on unimpaired loans was $7.738 million at September 30, 2017. There were no material changes to the methodology used to determine our allowance for loan and lease losses during the three months ended September 30, 2017, although in recognition of relatively low loan loss rates in recent periods upward adjustments have been made to certain qualitative factor multipliers. As we add new products and expand our geographic coverage, and as the economic environment changes, we expect to enhance our methodology to keep pace with the size and complexity of the loan and lease portfolio and respond to pressures created by external forces. We engage outside firms on a regular basis to assess our methodology and perform independent credit reviews of our loan and lease portfolio. In addition, the Company’s external auditors, the FDIC, and the California DBO review the allowance for loan and lease losses as an integral part of their audit and examination processes. Management believes that the current methodology is appropriate given our size and level of complexity. The tables that follow detail the activity in the allowance for loan and lease losses for the periods noted: Allowance for Credit Losses and Recorded Investment in Financing Receivables (dollars in thousands, unaudited) Three months ended September 30, 2017 Real Estate Agricultural Products Commercial and Industrial Consumer Unallocated Total Allowance for credit losses: Beginning Balance $ 4,104 $ 243 $ 3,452 $ 1,149 $ 282 $ 9,230 Charge-offs (1 ) (132 ) (192 ) (561 ) — (886 ) Recoveries 69 — 87 284 — 440 Provision 369 108 (568 ) 315 (224 ) — Ending Balance $ 4,541 $ 219 $ 2,779 $ 1,187 $ 58 $ 8,784 Nine months ended September 30, 2017 Real Estate Agricultural Products Commercial and Industrial Consumer Unallocated Total Allowance for credit losses: Beginning Balance $ 3,548 $ 209 $ 4,279 $ 1,208 $ 457 $ 9,701 Charge-offs (146 ) (154 ) (576 ) (1,606 ) — (2,482 ) Recoveries 214 5 282 764 — 1,265 Provision 925 159 (1,206 ) 821 (399 ) 300 Ending Balance $ 4,541 $ 219 $ 2,779 $ 1,187 $ 58 $ 8,784 Reserves: Specific $ 646 $ — $ 170 $ 230 $ — $ 1,046 General 3,895 219 2,609 957 58 7,738 Ending Balance $ 4,541 $ 219 $ 2,779 $ 1,187 $ 58 $ 8,784 Loans evaluated for impairment: Individually $ 14,245 $ — $ 1,325 $ 1,300 $ — $ 16,870 Collectively 1,007,372 49,315 229,071 8,997 1,294,755 Ending Balance $ 1,021,617 $ 49,315 $ 230,396 $ 10,297 $ — $ 1,311,625 Year ended December 31, 2016 Real Estate Agricultural Products Commercial and Industrial Consumer Unallocated Total Allowance for credit losses: Beginning Balance $ 4,783 $ 722 $ 2,533 $ 1,263 $ 1,122 $ 10,423 Charge-offs (962 ) — (344 ) (1,905 ) — (3,211 ) Recoveries 983 14 477 1,015 — 2,489 Provision (1,256 ) (527 ) 1,613 835 (665 ) — Ending Balance $ 3,548 $ 209 $ 4,279 $ 1,208 $ 457 $ 9,701 Reserves: Specific $ 488 $ 24 $ 608 $ 287 $ — $ 1,407 General 3,060 185 3,671 921 457 8,294 Ending Balance $ 3,548 $ 209 $ 4,279 $ 1,208 $ 457 $ 9,701 Loans evaluated for impairment: Individually $ 16,569 $ 89 $ 2,273 $ 1,662 $ — $ 20,593 Collectively 900,928 46,140 284,367 10,503 — 1,241,938 Ending Balance $ 917,497 $ 46,229 $ 286,640 $ 12,165 $ — $ 1,262,531

Recent Developments

Recent Developments	9 Months Ended
	Sep. 30, 2017
Recent Developments [Abstract]
Recent Developments	Note 13 – Recent Developments On April 24, 2017, the Company announced the signing of a definitive agreement to acquire OCB Bancorp (“Ojai”), the holding company for Ojai Community Bank, and the transaction was completed on October 1, 2017. Immediately following the acquisition, Ojai Community Bank was merged with and into Bank of the Sierra. Ojai Community Bank had its head office in Ojai, and branch offices in Ventura, Santa Paula, and Santa Barbara, conducting business in the respective communities as Ventura Community Bank, Santa Paula Community Bank, and Santa Barbara Community Bank. Those locations are now being operated as our branch offices under the Bank of the Sierra name, but it should be noted that we plan to consolidate Ojai’s former Santa Paula office into our Santa Paula branch in early 2018. The aggregate consideration tendered by the Company in its acquisition of OCB Bancorp consisted of 1.376 million shares of Sierra Bancorp common stock, approximately $1.2 million in cash in lieu of shares for certain convertible debt and unexercised stock options, and a nominal amount of cash for fractional shares. One-time acquisition costs are expected to add $2.5 million to $3.0 million to the Company’s pre-tax non-interest expense, primarily in 2017. At the merger date the Ojai acquisition contributed approximately $220 million to the Company’s outstanding loan balances, over $5 million to investment securities, and $231 million to total deposits. In accordance with GAAP, assets and liabilities will be reflected on the Company’s books at their estimated fair values and there was no carryover of the allowance for loan losses that had previously been recorded by Ojai. The Company will also record a deferred income tax asset, goodwill, and a core deposit intangible (“CDI”) in conjunction with the acquisition, although those amounts have not yet been definitively determined. Goodwill represents the excess of consideration transferred over the fair values of the identifiable net assets acquired; it is not amortized but could be written down if deemed to be impaired at some point. The CDI is essentially the premium paid for core deposits over the fair value of those deposits, and it will be amortized on a straight line basis over eight years commencing at the date of acquisition. Goodwill and core deposit intangibles are not deductible for income tax purposes. On July 5, 2017, Bank of the Sierra, the banking subsidiary of Sierra Bancorp, entered into an agreement with Citizens Business Bank, the banking subsidiary of CVB Financial Corp., to acquire the Citizens branch located in Woodlake, California. The transaction closed on November 3, 2017, and the Woodlake branch is now being operated as a full-service branch of Bank of the Sierra. Woodlake branch deposits totaled approximately $26 million at the acquisition date, consisting largely of non-maturity deposits. Bank of the Sierra already had a number of deposits in the Woodlake zip code that are domiciled at nearby branches, and this branch purchase is intended to enhance the level of service for those customers as well as provide additional core deposits for the Bank. The acquisition also included the purchase of the Woodlake branch building, the real property on which the building is located, and certain other equipment and fixed assets at their aggregate fair value of $500,000. The Company acquired Coast Bancorp (“Coast”), the holding company for Coast National Bank, on July 8, 2016, and immediately following the acquisition, Coast National Bank was merged with and into Bank of the Sierra. Coast National Bank was a community bank with branch offices in San Luis Obispo, Paso Robles, and Arroyo Grande, and a loan production office in Atascadero, California. Shortly after transaction closing, the Atascadero location was converted into a full-service branch office. At the acquisition date, the fair value of Coast’s loans totaled $94 million and deposits totaled $129 million. The acquisition also involved $7 million in trust preferred securities, which were booked by the Company at their initial fair value of $3.4 million. This acquisition had, and will continue to have, a material impact on comparative 2017 and 2016 average balances and associated income and expense. Furthermore, one-time acquisition costs added over $2.4 million to the Company’s pre-tax non-interest expense in 2016.

Financial Instruments with Of21

Financial Instruments with Off-Balance-Sheet Risk (Tables)	9 Months Ended
	Sep. 30, 2017
Financial Instruments With Off Balance Sheet Risk [Abstract]
Schedule of Financial Instruments	. The following financial instruments represent off‑balance‑sheet credit risk (dollars in thousands): September 30, 2017 December 31, 2016 Commitments to extend credit $ 639,177 $ 463,923 Standby letters of credit $ 7,936 $ 8,582

Fair Value Disclosures and Re22

Fair Value Disclosures and Reporting, the Fair Value Option and Fair Value Measurements (Tables)	9 Months Ended
	Sep. 30, 2017
Fair Value Disclosures [Abstract]
Schedule of carrying amount and estimated fair values of financial instruments	Estimated fair values for the Company’s financial instruments are as follows, as of the dates noted: Fair Value of Financial Instruments (dollars in thousands, unaudited) September 30, 2017 Estimated Fair Value Carrying Amount Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Total Financial assets: Cash and cash equivalents $ 54,607 $ 54,610 $ — $ — $ 54,610 Investment securities available for sale 583,200 — 583,200 — 583,200 Loans and leases, net held for investment 1,305,507 — 1,317,560 — 1,317,560 Collateral dependent impaired loans 39 — 39 — 39 Cash surrender value of life insurance policies 45,270 — 45,270 — 45,270 Other investments 8,741 — 8,741 — 8,741 Accrued interest receivable 6,676 — 6,676 — 6,676 Financial liabilities: Deposits: Noninterest-bearing $ 571,509 $ 571,509 $ — $ — $ 571,509 Interest-bearing 1,208,070 — 1,207,808 — 1,207,808 Fed funds purchased and repurchase agreements 10,279 — 10,279 — 10,279 Short-term borrowings 10,500 — 10,500 — 10,500 Subordinated debentures 34,544 — 24,095 — 24,095 Accrued interest payable 175 — 175 — 175 December 31, 2016 Estimated Fair Value Carrying Amount Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Total Financial assets: Cash and cash equivalents $ 120,442 $ 120,442 $ — $ — $ 120,442 Investment securities available for sale 530,083 1,546 528,537 — 530,083 Loans and leases, net held for investment 1,255,348 — 1,266,447 — 1,266,447 Collateral dependent impaired loans 406 — 406 — 406 Cash surrender value of life insurance policies 43,706 — 43,706 — 43,706 Other investments 8,506 — 8,506 — 8,506 Accrued interest receivable 6,354 — 6,354 — 6,354 Financial liabilities: Deposits: Noninterest-bearing $ 524,552 $ 524,552 $ — $ — $ 524,552 Interest-bearing 1,170,919 — 1,171,188 — 1,171,188 Fed funds purchased and repurchase agreements 8,094 — 8,094 — 8,094 Short-term borrowings 65,000 — 65,000 — 65,000 Subordinated debentures 34,410 — 22,633 — 22,633 Accrued interest payable 188 — 188 — 188
Schedule of off-balance-sheet financial instruments	Notional Amount Off-balance-sheet financial instruments: Commitments to extend credit $ 639,177 Standby letters of credit 7,936 Notional Amount Off-balance-sheet financial instruments: Commitments to extend credit $ 463,923 Standby letters of credit 8,582
Schedule of assets reported at fair value on a recurring basis	Assets reported at fair value on a recurring basis are summarized below: Fair Value Measurements - Recurring (dollars in thousands, unaudited) Fair Value Measurements at September 30, 2017, using Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Total Realized Gain/(Loss) (Level 3) Securities: US Government agencies $ — $ 24,422 $ — $ 24,422 $ — Mortgage-backed securities — 417,038 — 417,038 — State and political subdivisions — 141,740 — 141,740 — Equity securities — — — — — Total available-for-sale securities $ — $ 583,200 $ — $ 583,200 $ — Fair Value Measurements at December 31, 2016, using Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Total Realized Gain/(Loss) (Level 3) Securities: US Government agencies $ — $ 26,468 $ — $ 26,468 $ — Mortgage-backed securities — 387,876 — 387,876 — State and political subdivisions — 114,193 — 114,193 — Equity securities 1,546 — — 1,546 — Total available-for-sale securities $ 1,546 $ 528,537 $ — $ 530,083 $ —
Schedule of assets reported at fair value on a nonrecurring basis	Assets reported at fair value on a nonrecurring basis are summarized below: Fair Value Measurements - Nonrecurring (dollars in thousands, unaudited) Fair Value Measurements at September 30, 2017, using Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Total Impaired loans Real Estate: 1-4 family residential construction $ — $ — $ — $ — Other construction/land — — — — 1-4 family - closed-end — 12 — 12 Equity lines — 14 — 14 Multi-family residential — — — — Commercial real estate - owner occupied — — — — Commercial real estate - non-owner occupied — — — — Farmland — — — — Total real estate — 26 — 26 Agriculture — — — — Commercial and industrial — — — — Consumer loans — 13 — 13 Total impaired loans — 39 — 39 Foreclosed assets $ — $ 2,674 $ — $ 2,674 Total assets measured on a nonrecurring basis $ — $ 2,713 $ — $ 2,713 Fair Value Measurements at December 31, 2016, using Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Total Impaired loans Real Estate: 1-4 family residential construction $ — $ — $ — $ — Other construction/land — — — — 1-4 family - closed-end — — — — Equity lines — — — — Multi-family residential — — — — Commercial real estate - owner occupied — 281 — 281 Commercial real estate - non-owner occupied — 67 — 67 Farmland — — — — Total real estate — 348 — 348 Agriculture — — — — Commercial and industrial — — — — Consumer loans — 58 — 58 Total impaired loans — $ 406 — 406 Foreclosed assets $ — $ 2,225 $ — $ 2,225 Total assets measured on a nonrecurring basis $ — $ 2,631 $ — $ 2,631

Investments (Tables)

Investments (Tables)	9 Months Ended
	Sep. 30, 2017
Investments Debt And Equity Securities [Abstract]
Amortized Cost and Estimated Fair Value of Investment Securities Available-For-Sale	Amortized Cost And Estimated Fair Value (dollars in thousands, unaudited) September 30, 2017 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Estimated Fair Value US Government agencies $ 24,574 $ 112 $ (264 ) $ 24,422 Mortgage-backed securities 418,961 1,416 (3,339 ) 417,038 State and political subdivisions 138,621 3,401 (282 ) 141,740 Equity securities — — — — Total securities $ 582,156 $ 4,929 $ (3,885 ) $ 583,200 December 31, 2016 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Estimated Fair Value US Government agencies $ 26,926 $ 48 $ (506 ) $ 26,468 Mortgage-backed securities 391,555 1,492 (5,171 ) 387,876 State and political subdivisions 114,140 1,519 (1,466 ) 114,193 Equity securities 500 1,046 — 1,546 Total securities $ 533,121 $ 4,105 $ (7,143 ) $ 530,083
Information Pertaining to Investment Securities Aggregated by Investment Category and Length of Time that Individual Securities in a Continuous Loss Position	Investment Portfolio - Unrealized Losses (dollars in thousands, unaudited) September 30, 2017 Less than twelve months Twelve months or more Gross Unrealized Losses Fair Value Gross Unrealized Losses Fair Value US Government agencies $ (136 ) $ 12,379 $ (128 ) $ 4,512 Mortgage-backed securities (1,906 ) 231,968 (1,433 ) 79,052 State and political subdivisions (120 ) 13,042 (162 ) 7,018 Total $ (2,162 ) $ 257,389 $ (1,723 ) $ 90,582 December 31, 2016 Less than twelve months Twelve months or more Gross Unrealized Losses Fair Value Gross Unrealized Losses Fair Value US Government agencies $ (500 ) $ 21,056 $ (6 ) $ 711 Mortgage-backed securities (4,303 ) 271,276 (868 ) 43,570 State and political subdivisions (1,466 ) 49,195 — — Total $ (6,269 ) $ 341,527 $ (874 ) $ 44,281
Realized Gain (Loss) on Investments	Investment Portfolio - Realized Gains/(Losses) (dollars in thousands, unaudited) Three months ended September 30, Nine months ended September 30, 2017 2016 2017 2016 Proceeds from sales, calls and maturities of securities available for sale $ 5,865 $ 19,723 $ 23,490 $ 24,948 Gross gains on sales, calls and maturities of securities available for sale $ 918 $ 90 $ 1,024 $ 250 Gross losses on sales, calls and maturities of securities available for sale — — (40 ) (38 ) Net gains on sale of securities available for sale $ 918 $ 90 $ 984 $ 212
Investments Classified by Contractual Maturity Date	Estimated Fair Value of Contractual Maturities (dollars in thousands, unaudited) September 30, 2017 Amortized Cost Fair Value Maturing within one year $ 7,657 $ 7,736 Maturing after one year through five years 252,046 252,582 Maturing after five years through ten years 44,786 45,702 Maturing after ten years 75,744 76,935 Securities not due at a single maturity date: US Government agencies collateralized by mortgage obligations 201,923 200,245 Other securities - - $ 582,156 $ 583,200 December 31, 2016 Amortized Cost Fair Value Maturing within one year $ 8,488 $ 8,573 Maturing after one year through five years 260,387 259,535 Maturing after five years through ten years 50,823 50,687 Maturing after ten years 47,132 46,190 Securities not due at a single maturity date: US Government agencies collateralized by mortgage obligations 165,791 163,552 Other securities 500 1,546 $ 533,121 $ 530,083
Summary of amortized cost and fair values of general obligation and revenue bonds	Revenue and General Obligation Bonds by Location (dollars in thousands, unaudited) September 30, 2017 December 31, 2016 Amortized Fair Market Amortized Fair Market General obligation bonds Cost Value Cost Value State of issuance Texas $ 32,352 $ 32,826 $ 20,170 $ 19,875 California 26,677 27,638 25,457 25,799 Washington 13,108 13,392 5,928 5,970 Ohio 9,355 9,464 9,412 9,324 Illinois 8,388 8,565 9,873 9,871 Other (21 states) 24,236 24,831 22,637 22,698 Total General Obligation Bonds 114,116 116,716 93,477 93,537 Revenue bonds State of issuance Texas 7,105 7,248 5,727 5,702 California 1,029 1,046 1,283 1,298 Washington 2,108 2,177 1,302 1,299 Ohio — — 261 261 Illinois 284 290 287 284 Other (12 states) 13,979 14,263 11,803 11,812 Total Revenue Bonds 24,505 25,024 20,663 20,656 Total Obligations of States and Political Subdivisions $ 138,621 $ 141,740 $ 114,140 $ 114,193 Revenue Bonds by Type (dollars in thousands, unaudited) September 30, 2017 December 31, 2016 Amortized Fair Market Amortized Fair Market Revenue bonds Cost Value Cost Value Revenue source: Water $ 7,236 $ 7,362 $ 4,788 $ 4,722 Sales Tax 2,963 3,005 2,981 2,927 College & University 2,619 2,710 3,401 3,472 Lease 2,320 2,387 3,119 3,123 Local Housing 1,535 1,552 168 167 Other (13 sources) 7,832 8,008 6,206 6,245 Total Revenue Bonds $ 24,505 $ 25,024 $ 20,663 $ 20,656

Credit Quality and Nonperform24

Credit Quality and Nonperforming Assets (Tables)	9 Months Ended
	Sep. 30, 2017
Credit Quality And Nonperforming Assets [Abstract]
Credit Quality Classifications for Loan Balances	Credit quality classifications for the Company’s loan balances were as follows, as of the dates indicated: Credit Quality Classifications (dollars in thousands, unaudited) September 30, 2017 Pass Special Mention Substandard Impaired Total Real Estate: 1-4 family residential construction $ 53,035 $ — $ — $ — $ 53,035 Other construction/land 46,317 281 — 562 47,160 1-4 family - closed end 148,652 626 794 4,862 154,934 Equity lines 33,411 3,555 538 4,618 42,122 Multi-family residential 31,020 — — 394 31,414 Commercial real estate - owner occupied 253,912 4,343 2,766 1,844 262,865 Commercial real estate - non-owner occupied 275,251 4,464 3,154 1,668 284,537 Farmland 143,742 996 515 297 145,550 Total real estate 985,340 14,265 7,767 14,245 1,021,617 Agricultural 48,663 652 — — 49,315 Commercial and industrial 98,822 10,539 679 1,325 111,365 Mortgage warehouse 119,031 — — — 119,031 Consumer loans 8,609 320 68 1,300 10,297 Total gross loans and leases $ 1,260,465 $ 25,776 $ 8,514 $ 16,870 $ 1,311,625 December 31, 2016 Pass Special Mention Substandard Impaired Total Real Estate: 1-4 family residential construction $ 32,417 $ — $ — $ — $ 32,417 Other construction/land 38,699 888 — 1,063 40,650 1-4 family - closed end 129,726 624 403 6,390 137,143 Equity lines 35,159 3,165 698 4,421 43,443 Multi-family residential 31,058 — — 573 31,631 Commercial real estate - owner occupied 243,366 4,991 2,892 2,286 253,535 Commercial real estate - non-owner occupied 233,584 5,597 3,220 1,797 244,198 Farmland 132,613 1,020 808 39 134,480 Total real estate 876,622 16,285 8,021 16,569 917,497 Agricultural 45,249 891 — 89 46,229 Commercial and industrial 107,404 13,186 732 2,273 123,595 Mortgage warehouse 163,045 — — — 163,045 Consumer loans 10,303 191 9 1,662 12,165 Total gross loans and leases $ 1,202,623 $ 30,553 $ 8,762 $ 20,593 $ 1,262,531
Aging of Loan Balances by Number of Days Past Due	Loan Portfolio Aging (dollars in thousands, unaudited) September 30, 2017 30-59 Days Past Due 60-89 Days Past Due 90 Days Or More Past Due (1) Total Past Due Current Total Financing Receivables Non-Accrual Loans (2) Real Estate: 1-4 family residential construction $ — $ — $ — $ — $ 53,035 $ 53,035 $ — Other construction/land — — — — 47,160 47,160 83 1-4 family - closed end 298 90 540 928 154,006 154,934 886 Equity lines 334 — 203 537 41,585 42,122 893 Multi-family residential — — — — 31,414 31,414 — Commercial real estate - owner occupied 191 — 114 305 262,560 262,865 1,148 Commercial real estate - non-owner occupied — — — — 284,537 284,537 — Farmland — — — — 145,550 145,550 297 Total real estate 823 90 857 1,770 1,019,847 1,021,617 3,307 Agricultural — — — — 49,315 49,315 — Commercial and industrial 463 — 519 982 110,383 111,365 734 Mortgage warehouse lines — — — — 119,031 119,031 — Consumer 206 15 — 221 10,076 10,297 77 Total gross loans and leases $ 1,492 $ 105 $ 1,376 $ 2,973 $ 1,308,652 $ 1,311,625 $ 4,118 (1) As of September 30, 2017 there were no loans over 90 days past due and still accruing. (2) Included in total financing receivables December 31, 2016 30-59 Days Past Due 60-89 Days Past Due 90 Days Or More Past Due (1) Total Past Due Current Total Financing Receivables Non-Accrual Loans (2) Real Estate: 1-4 family residential construction $ — $ — $ — $ — $ 32,417 $ 32,417 $ — Other construction/land — — — — 40,650 40,650 558 1-4 family - closed end 99 23 575 697 136,446 137,143 963 Equity lines 397 — 320 717 42,726 43,443 1,926 Multi-family residential — — — — 31,631 31,631 — Commercial real estate - owner occupied 338 — 28 366 253,169 253,535 1,572 Commercial real estate - non-owner occupied — — — — 244,198 244,198 67 Farmland — — — — 134,480 134,480 39 Total real estate 834 23 923 1,780 915,717 917,497 5,125 Agricultural — — 89 89 46,140 46,229 89 Commercial and industrial 168 3 292 463 123,132 123,595 692 Mortgage warehouse lines — — — — 163,045 163,045 — Consumer 94 9 52 155 12,010 12,165 459 Total gross loans and leases $ 1,096 $ 35 $ 1,356 $ 2,487 $ 1,260,044 $ 1,262,531 $ 6,365 (1) As of December 31, 2016 there were no loans over 90 days past due and still accruing. (2) Included in total financing receivables
Troubled Debt Restructurings, by Type of Loan Modification	Troubled Debt Restructurings, by Type of Loan Modification (dollars in thousands, unaudited) Three months ended September 30, 2017 Term Modification Interest Only Modification Rate & Term Modification Total Real Estate: Other construction/land $ — $ — $ — $ — 1-4 family - closed-end — — 250 250 Equity lines 40 — 96 136 Multi-family residential — — — — Commercial real estate - owner occupied 529 — — 529 Farmland — — — — Total real estate loans 569 — 346 915 Commercial and industrial — — — — Consumer loans 7 — — 7 $ 576 $ — $ 346 $ 922 Three months ended September 30, 2016 Term Modification Interest Only Modification Rate & Term Modification Total Real Estate: Other construction/land $ — $ — $ — $ — 1-4 family - closed-end — — 178 178 Equity lines 135 — 97 232 Multi-family residential — — — — Commercial real estate - owner occupied — — — — Farmland — — 258 258 Total real estate loans 135 — 533 668 Commercial and industrial — — — — Consumer loans 5 — — 5 $ 140 $ — $ 533 $ 673 Troubled Debt Restructurings, by Type of Loan Modification (dollars in thousands, unaudited) Nine months ended September 30, 2017 Term Modification Interest Only Modification Rate & Term Modification Total Real Estate: Other construction/land $ — $ — $ — $ — 1-4 family - closed-end — — 340 340 Equity lines 643 — 96 739 Multi-family residential — — — — Commercial real estate - owner occupied 529 — — 529 Farmland — — — — Total real estate loans 1,172 — 436 1,608 Commercial and industrial 15 — — 15 Consumer loans 7 — — 7 $ 1,194 $ — $ 436 $ 1,630 Nine months ended September 30, 2016 Term Modification Interest Only Modification Rate & Term Modification Total Real Estate: Other construction/land $ 17 $ — $ — $ 17 1-4 family - closed-end — 547 437 984 Equity lines 1,415 — 97 1,512 Multi-family residential — — 132 132 Commercial real estate - owner occupied — — 266 266 Farmland — — 258 258 Total real estate loans 1,432 547 1,190 3,169 Commercial and industrial — — — — Consumer loans 25 — 60 85 $ 1,457 $ 547 $ 1,250 $ 3,254 The following tables present, by class, additional details related to loans classified as TDRs during the referenced periods, including the recorded investment in the loan both before and after modification and balances that were modified during the period: Troubled Debt Restructurings (dollars in thousands, unaudited) Three months ended September 30, 2017 Pre- Modification Post- Modification Number of Loans Outstanding Recorded Investment Outstanding Recorded Investment Reserve Difference⁽¹⁾ Reserve Real Estate: Other construction/land 0 $ — $ — $ — $ — 1-4 family - closed-end 3 250 250 — 8 Equity lines 2 136 136 3 2 Multi-family residential 0 — — — — Commercial real estate - owner occupied 1 529 529 — 6 Farmland 0 — — — — Total real estate loans 915 915 3 16 Commercial and industrial 0 — — — — Consumer loans 1 7 7 — 2 $ 922 $ 922 $ 3 $ 18 (1) This represents the change in the ALLL reserve for these credits measured as the difference between the specific post-modification impairment reserve and the pre-modification reserve calculated under our general allowance for loan loss methodology. Three months ended September 30, 2016 Pre- Modification Post- Modification Number of Loans Outstanding Recorded Investment Outstanding Recorded Investment Reserve Difference⁽¹⁾ Reserve Real Estate: Other construction/land 0 $ — $ — $ — $ — 1-4 family - closed-end 3 178 178 41 80 Equity lines 3 232 232 15 17 Multi-family residential 0 — — — — Commercial real estate - owner occupied 0 — — — — Farmland 1 258 258 (26 ) - Total real estate loans 668 668 30 97 Commercial and industrial 0 — — — — Consumer loans 1 4 5 — — $ 672 $ 673 $ 30 $ 97 (1) This represents the change in the ALLL reserve for these credits measured as the difference between the specific post-modification impairment reserve and the pre-modification reserve calculated under our general allowance for loan loss methodology. Troubled Debt Restructurings (dollars in thousands, unaudited) Nine months ended September 30, 2017 Pre- Modification Post- Modification Number of Loans Outstanding Recorded Investment Outstanding Recorded Investment Reserve Difference⁽¹⁾ Reserve Real Estate: Other construction/land 0 $ — $ — $ — $ — 1-4 family - closed-end 6 340 340 32 12 Equity lines 7 739 739 85 25 Multi-family residential 0 — — — — Commercial real estate - owner occupied 1 529 529 — 6 Farmland 0 — — — — Total real estate loans 1,608 1,608 117 43 Commercial and industrial 1 15 15 — — Consumer loans 1 7 7 — 2 $ 1,630 $ 1,630 $ 117 $ 45 (1) This represents the change in the ALLL reserve for these credits measured as the difference between the specific post-modification impairment reserve and the pre-modification reserve calculated under our general allowance for loan loss methodology. Nine months ended September 30, 2016 Pre- Modification Post- Modification Number of Loans Outstanding Recorded Investment Outstanding Recorded Investment Reserve Difference⁽¹⁾ Reserve Real Estate: Other construction/land 1 $ 17 $ 17 $ — $ 2 1-4 family - closed-end 8 984 984 116 107 Equity lines 13 1,512 1,512 (27 ) 46 Multi-family residential 1 132 132 — 6 Commercial real estate - owner occupied 1 266 266 — 4 Farmland 1 258 258 (26 ) — Total real estate loans 3,169 3,169 63 165 Commercial and industrial 0 — — — — Consumer loans 4 84 85 (7 ) 6 $ 3,253 $ 3,254 $ 56 $ 171 (1) This represents the change in the ALLL reserve for these credits measured as the difference between the specific post-modification impairment reserve and the pre-modification reserve calculated under our general allowance for loan loss methodology.
Schedule of Debtor Troubled Debt Restructuring, Subsequent Periods	The carrying amount and unpaid principal balance of those PCI loans was as follows, as of the dates indicated: Purchased Credit Impaired Loans: (dollars in thousands, unaudited) September 30, 2017 Unpaid Principal Balance Carrying Value Real estate secured $ 254 $ 37 Commercial and industrial 8 - Total purchased credit impaired loans $ 262 $ 37 December 31, 2016 Unpaid Principal Balance Carrying Value Real estate secured $ 712 $ 47 Commercial and industrial 23 — Total purchased credit impaired loans $ 735 $ 47

Allowance for Loan and Lease 25

Allowance for Loan and Lease Losses (Tables)	9 Months Ended
	Sep. 30, 2017
Receivables [Abstract]
Impaired Financing Receivables	Impaired Loans (dollars in thousands, unaudited) September 30, 2017 Unpaid Principal Balance (1) Recorded Investment (2) Related Allowance Average Recorded Investment Interest Income Recognized (3) With an allowance recorded Real Estate: Other construction/land $ 688 $ 533 $ 31 $ 772 $ 33 1-4 family - closed-end 6,108 4,160 88 6,933 314 Equity lines 4,404 4,318 327 4,550 113 Multi-family residential 394 394 30 412 17 Commercial real estate- owner occupied 519 400 136 524 30 Commercial real estate- non-owner occupied 1,815 1,668 34 1,907 95 Total real estate 13,928 11,473 646 15,098 602 Agriculture — — — — — Commercial and industrial 739 707 170 1,826 74 Consumer loans 1,280 1,270 230 1,461 75 15,947 13,450 1,046 18,385 751 With no related allowance recorded Real Estate: Other construction/land 29 29 — 34 — 1-4 family - closed-end 760 702 — 828 2 Equity lines 329 300 — 333 — Commercial real estate- owner occupied 1,445 1,444 — 1,808 8 Commercial real estate- non-owner occupied 10 — — 28 — Farmland 297 297 — 328 — Total real estate 2,870 2,772 — 3,359 10 Agriculture 132 — — 397 — Commercial and industrial 619 618 — 854 — Consumer loans 155 30 — 238 — 3,776 3,420 — 4,848 10 Total $ 19,723 $ 16,870 $ 1,046 $ 23,233 $ 761 (1) Contractual principal balance due from customer. (2) Principal balance on Company's books, less any direct charge offs. (3) Interest income is recognized on performing balances on a regular accrual basis. Impaired Loans (dollars in thousands, unaudited) December 31, 2016 Unpaid Principal Balance (1) Recorded Investment (2) Related Allowance Average Recorded Investment Interest Income Recognized (3) With an allowance recorded Real Estate: Other construction/land $ 854 $ 699 $ 20 $ 624 $ 14 1-4 family - closed-end 7,730 5,783 163 8,008 462 Equity lines 3,991 3,906 214 4,110 49 Multi-family residential 573 573 7 588 50 Commercial real estate- owner occupied 1,287 1,287 49 1,641 14 Commercial real estate- non-owner occupied 1,877 1,730 35 1,969 131 Total real estate 16,312 13,978 488 16,940 720 Agriculture 24 24 24 24 — Commercial and industrial 2,211 2,211 608 2,652 99 Consumer loans 1,633 1,633 287 1,847 94 20,180 17,846 1,407 21,463 913 With no related allowance recorded Real Estate: Other construction/land 364 364 — 374 27 1-4 family - closed-end 666 607 — 685 3 Equity lines 544 515 — 550 — Commercial real estate- owner occupied 999 999 — 1,773 98 Commercial real estate- non-owner occupied 77 67 — 85 — Farmland 39 39 — 50 — Total real estate 2,689 2,591 — 3,517 128 Agriculture 65 65 65 Commercial and industrial 62 62 — 277 — Consumer loans 148 29 — 238 — 2,964 2,747 — 4,097 128 Total $ 23,144 $ 20,593 $ 1,407 $ 25,560 $ 1,041 (1) Contractual principal balance due from customer. (2) Principal balance on Company's books, less any direct charge offs. (3) Interest income is recognized on performing balances on a regular accrual basis.
Allowance for Credit Losses on Financing Receivables	Allowance for Credit Losses and Recorded Investment in Financing Receivables (dollars in thousands, unaudited) Three months ended September 30, 2017 Real Estate Agricultural Products Commercial and Industrial Consumer Unallocated Total Allowance for credit losses: Beginning Balance $ 4,104 $ 243 $ 3,452 $ 1,149 $ 282 $ 9,230 Charge-offs (1 ) (132 ) (192 ) (561 ) — (886 ) Recoveries 69 — 87 284 — 440 Provision 369 108 (568 ) 315 (224 ) — Ending Balance $ 4,541 $ 219 $ 2,779 $ 1,187 $ 58 $ 8,784 Nine months ended September 30, 2017 Real Estate Agricultural Products Commercial and Industrial Consumer Unallocated Total Allowance for credit losses: Beginning Balance $ 3,548 $ 209 $ 4,279 $ 1,208 $ 457 $ 9,701 Charge-offs (146 ) (154 ) (576 ) (1,606 ) — (2,482 ) Recoveries 214 5 282 764 — 1,265 Provision 925 159 (1,206 ) 821 (399 ) 300 Ending Balance $ 4,541 $ 219 $ 2,779 $ 1,187 $ 58 $ 8,784 Reserves: Specific $ 646 $ — $ 170 $ 230 $ — $ 1,046 General 3,895 219 2,609 957 58 7,738 Ending Balance $ 4,541 $ 219 $ 2,779 $ 1,187 $ 58 $ 8,784 Loans evaluated for impairment: Individually $ 14,245 $ — $ 1,325 $ 1,300 $ — $ 16,870 Collectively 1,007,372 49,315 229,071 8,997 1,294,755 Ending Balance $ 1,021,617 $ 49,315 $ 230,396 $ 10,297 $ — $ 1,311,625 Year ended December 31, 2016 Real Estate Agricultural Products Commercial and Industrial Consumer Unallocated Total Allowance for credit losses: Beginning Balance $ 4,783 $ 722 $ 2,533 $ 1,263 $ 1,122 $ 10,423 Charge-offs (962 ) — (344 ) (1,905 ) — (3,211 ) Recoveries 983 14 477 1,015 — 2,489 Provision (1,256 ) (527 ) 1,613 835 (665 ) — Ending Balance $ 3,548 $ 209 $ 4,279 $ 1,208 $ 457 $ 9,701 Reserves: Specific $ 488 $ 24 $ 608 $ 287 $ — $ 1,407 General 3,060 185 3,671 921 457 8,294 Ending Balance $ 3,548 $ 209 $ 4,279 $ 1,208 $ 457 $ 9,701 Loans evaluated for impairment: Individually $ 16,569 $ 89 $ 2,273 $ 1,662 $ — $ 20,593 Collectively 900,928 46,140 284,367 10,503 — 1,241,938 Ending Balance $ 917,497 $ 46,229 $ 286,640 $ 12,165 $ — $ 1,262,531

The Business of Sierra Bancorp

The Business of Sierra Bancorp (Narrative) (Details) $ in Thousands	9 Months Ended
	Sep. 30, 2017USD ($)BankBranch	Oct. 01, 2017USD ($)	Dec. 31, 2016USD ($)
Capital	$ 1,500
Number of acquired banks | Bank	4
Number of full service branch offices | Branch	39
Assets	$ 2,077,993		$ 2,032,873
Cash, FDIC Insured Amount	$ 1,800,000
Subsequent Event [Member] | Minimum [Member]
Assets		$ 2,300,000
Cash, FDIC Insured Amount		$ 2,000,000

Supplemental Disclosure of Ca27

Supplemental Disclosure of Cash Flow Information (Narrative) (Details) - USD ($)	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016
Supplemental Cash Flow Information [Abstract]
Interest Paid, Total	$ 3,645,000	$ 2,362,000
Income Taxes Paid	6,497,000	2,900,000
Noncash or Part Noncash Acquisition, Value of Assets Acquired, Total	648,000	847,000
Proceeds from Sale of Other Assets	$ 99,000	$ 837,000

Share Based Compensation (Narra

Share Based Compensation (Narrative) (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Share-based Compensation, Total	$ 18,000	$ 11,000	$ 459,000	$ 180,000
2007 Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Options outstanding	492,240		492,240
2017 Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized	850,000		850,000
Share-based compensation options, grants in period, Gross			0

Earnings per Share (Narrative)

Earnings per Share (Narrative) (Details) - shares	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Earnings Per Share [Abstract]
Weighted Average Number of Shares Outstanding, Basic	13,839,111	13,790,107	13,824,173	13,446,567
Weighted Average Number Diluted Shares Outstanding Adjustment	174,876	114,353	186,721	114,149
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	120,700	146,900	120,700	196,900

Financial Instruments with Of30

Financial Instruments with Off-Balance-Sheet Risk (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Commitments to Extend Credit [Member]
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Financial instruments off-balance sheet credit risks	$ 639,177	$ 463,923
Standby Letters of Credit [Member]
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Financial instruments off-balance sheet credit risks	$ 7,936	$ 8,582

Financial Instruments with Of31

Financial Instruments with Off-Balance-Sheet Risk (Narrative) (Details) $ in Millions	Sep. 30, 2017USD ($)
Financial Instruments With Off Balance Sheet Risk [Abstract]
Letters of Credit Outstanding, Amount	$ 86

Fair Value Disclosures and Re32

Fair Value Disclosures and Reporting, the Fair Value Option and Fair Value Measurements (Carrying Amount and Estimated Fair Values of Financial Instruments) (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Financial Assets:
Investment securities available for sale	$ 583,200	$ 530,083
Carrying Amount [Member]
Financial Assets:
Cash and cash equivalents	54,607	120,442
Investment securities available for sale	583,200	530,083
Loans and leases, net held for investment	1,305,507	1,255,348
Collateral dependent impaired loans	39	406
Cash surrender value of life insurance policies	45,270	43,706
Other investments	8,741	8,506
Accrued interest receivable	6,676	6,354
Deposits:
Noninterest-bearing	571,509	524,552
Interest-bearing	1,208,070	1,170,919
Fed funds purchased and repurchase agreements	10,279	8,094
Short-term borrowings	10,500	65,000
Subordinated debentures	34,544	34,410
Accrued interest payable	175	188
Fair Value [Member]
Financial Assets:
Cash and cash equivalents	54,610	120,442
Investment securities available for sale	583,200	530,083
Loans and leases, net held for investment	1,317,560	1,266,447
Collateral dependent impaired loans	39	406
Cash surrender value of life insurance policies	45,270	43,706
Other investments	8,741	8,506
Accrued interest receivable	6,676	6,354
Deposits:
Noninterest-bearing	571,509	524,552
Interest-bearing	1,207,808	1,171,188
Fed funds purchased and repurchase agreements	10,279	8,094
Short-term borrowings	10,500	65,000
Subordinated debentures	24,095	22,633
Accrued interest payable	175	188
Fair Value [Member] | Fair Value, Inputs, Level 1 [Member]
Financial Assets:
Cash and cash equivalents	54,610	120,442
Investment securities available for sale	0	1,546
Loans and leases, net held for investment	0	0
Collateral dependent impaired loans	0	0
Cash surrender value of life insurance policies	0	0
Other investments	0	0
Accrued interest receivable	0	0
Deposits:
Noninterest-bearing	571,509	524,552
Interest-bearing	0	0
Fed funds purchased and repurchase agreements	0	0
Short-term borrowings	0	0
Subordinated debentures	0	0
Accrued interest payable	0	0
Fair Value [Member] | Fair Value, Inputs, Level 2 [Member]
Financial Assets:
Cash and cash equivalents	0	0
Investment securities available for sale	583,200	528,537
Loans and leases, net held for investment	1,317,560	1,266,447
Collateral dependent impaired loans	39	406
Cash surrender value of life insurance policies	45,270	43,706
Other investments	8,741	8,506
Accrued interest receivable	6,676	6,354
Deposits:
Noninterest-bearing	0	0
Interest-bearing	1,207,808	1,171,188
Fed funds purchased and repurchase agreements	10,279	8,094
Short-term borrowings	10,500	65,000
Subordinated debentures	24,095	22,633
Accrued interest payable	175	188
Fair Value [Member] | Fair Value, Inputs, Level 3 [Member]
Financial Assets:
Cash and cash equivalents	0	0
Investment securities available for sale	0	0
Loans and leases, net held for investment	0	0
Collateral dependent impaired loans	0	0
Cash surrender value of life insurance policies	0	0
Other investments	0	0
Accrued interest receivable	0	0
Deposits:
Noninterest-bearing	0	0
Interest-bearing	0	0
Fed funds purchased and repurchase agreements	0	0
Short-term borrowings	0	0
Subordinated debentures	0	0
Accrued interest payable	$ 0	$ 0

Fair Value Disclosures and Re33

Fair Value Disclosures and Reporting, the Fair Value Option and Fair Value Measurements (Off-balance-sheet financial instruments) (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Commitments to Extend Credit [Member]
Off-balance-sheet financial instruments:
Notional Amount	$ 639,177	$ 463,923
Standby Letters of Credit [Member]
Off-balance-sheet financial instruments:
Notional Amount	$ 7,936	$ 8,582

Fair Value Disclosures and Re34

Fair Value Disclosures and Reporting, the Fair Value Option and Fair Value Measurements (Schedule of Fair Value, Assets Measured on Recurring Basis) (Details) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2017	Dec. 31, 2016
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	$ 583,200	$ 530,083
States and Political Subdivisions [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	141,740	114,193
Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	583,200	530,083
Other-than-temporary impairment losses on equity securities	0	0
Fair Value, Measurements, Recurring [Member] | States and Political Subdivisions [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	141,740	114,193
Other-than-temporary impairment losses on equity securities	0	0
Fair Value, Measurements, Recurring [Member] | U.S. Government agencies [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	24,422	26,468
Other-than-temporary impairment losses on equity securities	0	0
Fair Value, Measurements, Recurring [Member] | Mortgage-backed securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	417,038	387,876
Other-than-temporary impairment losses on equity securities	0	0
Fair Value, Measurements, Recurring [Member] | Other Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	0	1,546
Other-than-temporary impairment losses on equity securities	0	0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	0	1,546
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | States and Political Subdivisions [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	0	0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | U.S. Government agencies [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	0	0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | Mortgage-backed securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	0	0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | Other Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	0	1,546
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	583,200	528,537
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | States and Political Subdivisions [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	141,740	114,193
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | U.S. Government agencies [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	24,422	26,468
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Mortgage-backed securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	417,038	387,876
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Other Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	0	0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | States and Political Subdivisions [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	0	0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | U.S. Government agencies [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	0	0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Mortgage-backed securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	0	0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Other Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	$ 0	$ 0

Fair Value Disclosures and Re35

Fair Value Disclosures and Reporting, the Fair Value Option and Fair Value Measurements (Schedule Of Fair Value Assets and Liabilities Measured on Non Recurring Basis) (Details) - USD ($) $ in Thousands		Sep. 30, 2017	Dec. 31, 2016
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total impaired loans	[1]	$ 16,870	$ 20,593
Foreclosed assets		2,674	2,225
Fair Value, Measurements, Nonrecurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total impaired loans		39	406
Foreclosed assets		2,674	2,225
Total assets measured on a norecurring basis		2,713	2,631
Fair Value, Measurements, Nonrecurring [Member] | Real Estate Sector [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total impaired loans		26	348
Fair Value, Measurements, Nonrecurring [Member] | Real Estate Sector [Member] | Residential Real Estate [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total impaired loans		0	0
Fair Value, Measurements, Nonrecurring [Member] | Agricultural Sector [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total impaired loans		0	0
Fair Value, Measurements, Nonrecurring [Member] | Commercial and Industrial Sector [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total impaired loans		0	0
Fair Value, Measurements, Nonrecurring [Member] | Consumer Loans Sector [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total impaired loans		13	58
Fair Value, Measurements, Nonrecurring [Member] | Fair Value, Inputs, Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total impaired loans		0	0
Foreclosed assets		0	0
Total assets measured on a norecurring basis		0	0
Fair Value, Measurements, Nonrecurring [Member] | Fair Value, Inputs, Level 1 [Member] | Real Estate Sector [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total impaired loans		0	0
Fair Value, Measurements, Nonrecurring [Member] | Fair Value, Inputs, Level 1 [Member] | Real Estate Sector [Member] | Residential Real Estate [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total impaired loans		0	0
Fair Value, Measurements, Nonrecurring [Member] | Fair Value, Inputs, Level 1 [Member] | Agricultural Sector [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total impaired loans		0	0
Fair Value, Measurements, Nonrecurring [Member] | Fair Value, Inputs, Level 1 [Member] | Commercial and Industrial Sector [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total impaired loans		0	0
Fair Value, Measurements, Nonrecurring [Member] | Fair Value, Inputs, Level 1 [Member] | Consumer Loans Sector [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total impaired loans		0	0
Fair Value, Measurements, Nonrecurring [Member] | Fair Value, Inputs, Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total impaired loans		39	406
Foreclosed assets		2,674	2,225
Total assets measured on a norecurring basis		2,713	2,631
Fair Value, Measurements, Nonrecurring [Member] | Fair Value, Inputs, Level 2 [Member] | Real Estate Sector [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total impaired loans		26	348
Fair Value, Measurements, Nonrecurring [Member] | Fair Value, Inputs, Level 2 [Member] | Real Estate Sector [Member] | Residential Real Estate [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total impaired loans		0	0
Fair Value, Measurements, Nonrecurring [Member] | Fair Value, Inputs, Level 2 [Member] | Agricultural Sector [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total impaired loans		0	0
Fair Value, Measurements, Nonrecurring [Member] | Fair Value, Inputs, Level 2 [Member] | Commercial and Industrial Sector [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total impaired loans		0	0
Fair Value, Measurements, Nonrecurring [Member] | Fair Value, Inputs, Level 2 [Member] | Consumer Loans Sector [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total impaired loans		13	58
Fair Value, Measurements, Nonrecurring [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total impaired loans		0	0
Foreclosed assets		0	0
Total assets measured on a norecurring basis		0	0
Fair Value, Measurements, Nonrecurring [Member] | Fair Value, Inputs, Level 3 [Member] | Real Estate Sector [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total impaired loans		0	0
Fair Value, Measurements, Nonrecurring [Member] | Fair Value, Inputs, Level 3 [Member] | Real Estate Sector [Member] | Residential Real Estate [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total impaired loans		0	0
Fair Value, Measurements, Nonrecurring [Member] | Fair Value, Inputs, Level 3 [Member] | Agricultural Sector [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total impaired loans		0	0
Fair Value, Measurements, Nonrecurring [Member] | Fair Value, Inputs, Level 3 [Member] | Commercial and Industrial Sector [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total impaired loans		0	0
Fair Value, Measurements, Nonrecurring [Member] | Fair Value, Inputs, Level 3 [Member] | Consumer Loans Sector [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total impaired loans		0	0
One To Four Family Residential Real Estate [Member] | Fair Value, Measurements, Nonrecurring [Member] | Real Estate Sector [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total impaired loans		0	0
One To Four Family Residential Real Estate [Member] | Fair Value, Measurements, Nonrecurring [Member] | Fair Value, Inputs, Level 1 [Member] | Real Estate Sector [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total impaired loans		0	0
One To Four Family Residential Real Estate [Member] | Fair Value, Measurements, Nonrecurring [Member] | Fair Value, Inputs, Level 2 [Member] | Real Estate Sector [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total impaired loans		0	0
One To Four Family Residential Real Estate [Member] | Fair Value, Measurements, Nonrecurring [Member] | Fair Value, Inputs, Level 3 [Member] | Real Estate Sector [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total impaired loans		0	0
Construction and Land Development [Member] | Fair Value, Measurements, Nonrecurring [Member] | Real Estate Sector [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total impaired loans		0	0
Construction and Land Development [Member] | Fair Value, Measurements, Nonrecurring [Member] | Fair Value, Inputs, Level 1 [Member] | Real Estate Sector [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total impaired loans		0	0
Construction and Land Development [Member] | Fair Value, Measurements, Nonrecurring [Member] | Fair Value, Inputs, Level 2 [Member] | Real Estate Sector [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total impaired loans		0	0
Construction and Land Development [Member] | Fair Value, Measurements, Nonrecurring [Member] | Fair Value, Inputs, Level 3 [Member] | Real Estate Sector [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total impaired loans		0	0
One To Four Family Closed End [Member] | Fair Value, Measurements, Nonrecurring [Member] | Real Estate Sector [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total impaired loans		12	0
One To Four Family Closed End [Member] | Fair Value, Measurements, Nonrecurring [Member] | Fair Value, Inputs, Level 1 [Member] | Real Estate Sector [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total impaired loans		0	0
One To Four Family Closed End [Member] | Fair Value, Measurements, Nonrecurring [Member] | Fair Value, Inputs, Level 2 [Member] | Real Estate Sector [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total impaired loans		12	0
One To Four Family Closed End [Member] | Fair Value, Measurements, Nonrecurring [Member] | Fair Value, Inputs, Level 3 [Member] | Real Estate Sector [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total impaired loans		0	0
Equity Lines [Member] | Fair Value, Measurements, Nonrecurring [Member] | Real Estate Sector [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total impaired loans		14	0
Equity Lines [Member] | Fair Value, Measurements, Nonrecurring [Member] | Fair Value, Inputs, Level 1 [Member] | Real Estate Sector [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total impaired loans		0	0
Equity Lines [Member] | Fair Value, Measurements, Nonrecurring [Member] | Fair Value, Inputs, Level 2 [Member] | Real Estate Sector [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total impaired loans		14	0
Equity Lines [Member] | Fair Value, Measurements, Nonrecurring [Member] | Fair Value, Inputs, Level 3 [Member] | Real Estate Sector [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total impaired loans		0	0
Commercial Real Estate Owner Occupied [Member] | Fair Value, Measurements, Nonrecurring [Member] | Real Estate Sector [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total impaired loans		0	281
Commercial Real Estate Owner Occupied [Member] | Fair Value, Measurements, Nonrecurring [Member] | Fair Value, Inputs, Level 1 [Member] | Real Estate Sector [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total impaired loans		0	0
Commercial Real Estate Owner Occupied [Member] | Fair Value, Measurements, Nonrecurring [Member] | Fair Value, Inputs, Level 2 [Member] | Real Estate Sector [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total impaired loans		0	281
Commercial Real Estate Owner Occupied [Member] | Fair Value, Measurements, Nonrecurring [Member] | Fair Value, Inputs, Level 3 [Member] | Real Estate Sector [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total impaired loans		0	0
Commercial Real Estate Non Owner Occupied [Member] | Fair Value, Measurements, Nonrecurring [Member] | Real Estate Sector [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total impaired loans		0	67
Commercial Real Estate Non Owner Occupied [Member] | Fair Value, Measurements, Nonrecurring [Member] | Fair Value, Inputs, Level 1 [Member] | Real Estate Sector [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total impaired loans		0	0
Commercial Real Estate Non Owner Occupied [Member] | Fair Value, Measurements, Nonrecurring [Member] | Fair Value, Inputs, Level 2 [Member] | Real Estate Sector [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total impaired loans		0	67
Commercial Real Estate Non Owner Occupied [Member] | Fair Value, Measurements, Nonrecurring [Member] | Fair Value, Inputs, Level 3 [Member] | Real Estate Sector [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total impaired loans		0	0
Farmland [Member] | Fair Value, Measurements, Nonrecurring [Member] | Real Estate Sector [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total impaired loans		0	0
Farmland [Member] | Fair Value, Measurements, Nonrecurring [Member] | Fair Value, Inputs, Level 1 [Member] | Real Estate Sector [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total impaired loans		0	0
Farmland [Member] | Fair Value, Measurements, Nonrecurring [Member] | Fair Value, Inputs, Level 2 [Member] | Real Estate Sector [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total impaired loans		0	0
Farmland [Member] | Fair Value, Measurements, Nonrecurring [Member] | Fair Value, Inputs, Level 3 [Member] | Real Estate Sector [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total impaired loans		$ 0	$ 0
[1]	Principal balance on Company's books, less any direct charge offs.

Investments (Schedule of Availa

Investments (Schedule of Available-for-sale Securities Reconciliation) (Details) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2017	Dec. 31, 2016
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	$ 582,156	$ 533,121
Gross Unrealized Gains	4,929	4,105
Gross Unrealized Losses	(3,885)	(7,143)
Estimated Fair Value	583,200	530,083
US Government Agencies [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	24,574	26,926
Gross Unrealized Gains	112	48
Gross Unrealized Losses	(264)	(506)
Estimated Fair Value	24,422	26,468
Mortgage-backed securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	418,961	391,555
Gross Unrealized Gains	1,416	1,492
Gross Unrealized Losses	(3,339)	(5,171)
Estimated Fair Value	417,038	387,876
State and political subdivisions [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	138,621	114,140
Gross Unrealized Gains	3,401	1,519
Gross Unrealized Losses	(282)	(1,466)
Estimated Fair Value	141,740	114,193
Equity Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	0	500
Gross Unrealized Gains	0	1,046
Gross Unrealized Losses	0	0
Estimated Fair Value	$ 0	$ 1,546

Investments (Narrative) (Detail

Investments (Narrative) (Details) $ in Thousands	9 Months Ended
	Sep. 30, 2017USD ($)Security	Dec. 31, 2016USD ($)Security
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions, Total | Security	329	431
Securities available-for-sale	$ 583,200	$ 530,083
Available-for-sale Securities, Amortized Cost Basis, Total	582,156	533,121
Low Income Housing Tax Credit Fund Investments [Member]
Equity Method Investments	8,900
Equity Method Investments Tax Credit Amount	3,500
Investment Income, Net, Amortization of Discount and Premium	533,000
Equity Method Investment Additional Capital	837,000
States and Political Subdivisions [Member]
Available-for-sale Securities, Amortized Cost Basis, Total	2,588
States and Political Subdivisions [Member]
Securities available-for-sale	141,740	114,193
Available-for-sale Securities, Amortized Cost Basis, Total	$ 138,621	$ 114,140

Investments (Information Pertai

Investments (Information Pertaining to Investment Securities Aggregated by Investment Category and Length of Time that Individual Securities in a Continuous Loss Position) (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Schedule of Available-for-sale Securities [Line Items]
Gross Unrealized Losses, Less than twelve months	$ (2,162)	$ (6,269)
Fair Value, Less than twelve months	257,389	341,527
Gross Unrealized Losses, Twelve months or more	(1,723)	(874)
Fair Value, Twelve months or more	90,582	44,281
U.S. Government agencies [Member]
Schedule of Available-for-sale Securities [Line Items]
Gross Unrealized Losses, Less than twelve months	(136)	(500)
Fair Value, Less than twelve months	12,379	21,056
Gross Unrealized Losses, Twelve months or more	(128)	(6)
Fair Value, Twelve months or more	4,512	711
Mortgage-backed securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Gross Unrealized Losses, Less than twelve months	(1,906)	(4,303)
Fair Value, Less than twelve months	231,968	271,276
Gross Unrealized Losses, Twelve months or more	(1,433)	(868)
Fair Value, Twelve months or more	79,052	43,570
State and political subdivisions [Member]
Schedule of Available-for-sale Securities [Line Items]
Gross Unrealized Losses, Less than twelve months	(120)	(1,466)
Fair Value, Less than twelve months	13,042	49,195
Gross Unrealized Losses, Twelve months or more	(162)	0
Fair Value, Twelve months or more	$ 7,018	$ 0

Investments (Realized Gain (Los

Investments (Realized Gain (Loss) on Investments) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Available For Sale Securities Gross Realized Gain Loss [Abstract]
Proceeds from sales, calls and maturities of securities available for sale	$ 5,865	$ 19,723	$ 23,490	$ 24,948
Gross gains on sales, calls and maturities of securities available for sale	918	90	1,024	250
Gross losses on sales, calls and maturities of securities available for sale	0	0	(40)	(38)
Net gains on sale of securities available for sale	$ 918	$ 90	$ 984	$ 212

Investments (Investments Classi

Investments (Investments Classified by Contractual Maturity Date) (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Amortized Cost And Estimated Fair Value Of Investment Securities Available For Sale By Contractual Maturity [Line Items]
Maturing within one year, Amortized Cost	$ 7,657	$ 8,488
Maturing after one year through five years, Amortized Cost	252,046	260,387
Maturing after five years through ten years, Amortized Cost	44,786	50,823
Maturing after ten years, Amortized Cost	75,744	47,132
Amortized Cost, Total	582,156	533,121
Maturing within one year, Fair Value	7,736	8,573
Maturing after one year through five years, Fair Value	252,582	259,535
Maturing after five years through ten years, Fair Value	45,702	50,687
Maturing after ten years, Fair Value	76,935	46,190
Fair Value, Total	583,200	530,083
Other securities [Member]
Amortized Cost And Estimated Fair Value Of Investment Securities Available For Sale By Contractual Maturity [Line Items]
Investment securities not due at a single maturity date, Amortized Cost	0	500
Investment securities not due at a single maturity date, Fair Value	0	1,546
U.S Government agencies collateralized by mortgage obligations [Member]
Amortized Cost And Estimated Fair Value Of Investment Securities Available For Sale By Contractual Maturity [Line Items]
Investment securities not due at a single maturity date, Amortized Cost	201,923	165,791
Investment securities not due at a single maturity date, Fair Value	$ 200,245	$ 163,552

Investments (Summary of Amortiz

Investments (Summary of Amortized Cost and Fair Values of General Obligation and Revenue Bonds) (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Amortized Cost And Estimated Fair Value Of Investment Securities Available For Sale By Type Of Bonds [Line Items]
Amortized Cost	$ 582,156	$ 533,121
Fair Market Value	583,200	530,083
States and Political Subdivisions [Member]
Amortized Cost And Estimated Fair Value Of Investment Securities Available For Sale By Type Of Bonds [Line Items]
Amortized Cost	138,621	114,140
Fair Market Value	141,740	114,193
General Obligation Bonds [Member] | States and Political Subdivisions [Member]
Amortized Cost And Estimated Fair Value Of Investment Securities Available For Sale By Type Of Bonds [Line Items]
Amortized Cost	114,116	93,477
Fair Market Value	116,716	93,537
General Obligation Bonds [Member] | California [Member] | States and Political Subdivisions [Member]
Amortized Cost And Estimated Fair Value Of Investment Securities Available For Sale By Type Of Bonds [Line Items]
Amortized Cost	26,677	25,457
Fair Market Value	27,638	25,799
General Obligation Bonds [Member] | Texas [Member] | States and Political Subdivisions [Member]
Amortized Cost And Estimated Fair Value Of Investment Securities Available For Sale By Type Of Bonds [Line Items]
Amortized Cost	32,352	20,170
Fair Market Value	32,826	19,875
General Obligation Bonds [Member] | Illinois [Member] | States and Political Subdivisions [Member]
Amortized Cost And Estimated Fair Value Of Investment Securities Available For Sale By Type Of Bonds [Line Items]
Amortized Cost	8,388	9,873
Fair Market Value	8,565	9,871
General Obligation Bonds [Member] | Ohio [Member] | States and Political Subdivisions [Member]
Amortized Cost And Estimated Fair Value Of Investment Securities Available For Sale By Type Of Bonds [Line Items]
Amortized Cost	9,355	9,412
Fair Market Value	9,464	9,324
General Obligation Bonds [Member] | Washington [Member] | States and Political Subdivisions [Member]
Amortized Cost And Estimated Fair Value Of Investment Securities Available For Sale By Type Of Bonds [Line Items]
Amortized Cost	13,108	5,928
Fair Market Value	13,392	5,970
General Obligation Bonds [Member] | Other | States and Political Subdivisions [Member]
Amortized Cost And Estimated Fair Value Of Investment Securities Available For Sale By Type Of Bonds [Line Items]
Amortized Cost	24,236	22,637
Fair Market Value	24,831	22,698
Revenue Bonds [Member]
Amortized Cost And Estimated Fair Value Of Investment Securities Available For Sale By Type Of Bonds [Line Items]
Amortized Cost	24,505	20,663
Fair Market Value	25,024	20,656
Revenue Bonds [Member] | Water [Member]
Amortized Cost And Estimated Fair Value Of Investment Securities Available For Sale By Type Of Bonds [Line Items]
Amortized Cost	7,236	4,788
Fair Market Value	7,362	4,722
Revenue Bonds [Member] | College & University [Member]
Amortized Cost And Estimated Fair Value Of Investment Securities Available For Sale By Type Of Bonds [Line Items]
Amortized Cost	2,619	3,401
Fair Market Value	2,710	3,472
Revenue Bonds [Member] | Sales Tax [Member]
Amortized Cost And Estimated Fair Value Of Investment Securities Available For Sale By Type Of Bonds [Line Items]
Amortized Cost	2,963	2,981
Fair Market Value	3,005	2,927
Revenue Bonds [Member] | Lease [Member]
Amortized Cost And Estimated Fair Value Of Investment Securities Available For Sale By Type Of Bonds [Line Items]
Amortized Cost	2,320	3,119
Fair Market Value	2,387	3,123
Revenue Bonds [Member] | Local Housing [Member]
Amortized Cost And Estimated Fair Value Of Investment Securities Available For Sale By Type Of Bonds [Line Items]
Amortized Cost	1,535	168
Fair Market Value	1,552	167
Revenue Bonds [Member] | Other Sources [Member]
Amortized Cost And Estimated Fair Value Of Investment Securities Available For Sale By Type Of Bonds [Line Items]
Amortized Cost	7,832	6,206
Fair Market Value	8,008	6,245
Revenue Bonds [Member] | California [Member] | States and Political Subdivisions [Member]
Amortized Cost And Estimated Fair Value Of Investment Securities Available For Sale By Type Of Bonds [Line Items]
Amortized Cost	1,029	1,283
Fair Market Value	1,046	1,298
Revenue Bonds [Member] | Texas [Member] | States and Political Subdivisions [Member]
Amortized Cost And Estimated Fair Value Of Investment Securities Available For Sale By Type Of Bonds [Line Items]
Amortized Cost	7,105	5,727
Fair Market Value	7,248	5,702
Revenue Bonds [Member] | Illinois [Member] | States and Political Subdivisions [Member]
Amortized Cost And Estimated Fair Value Of Investment Securities Available For Sale By Type Of Bonds [Line Items]
Amortized Cost	284	287
Fair Market Value	290	284
Revenue Bonds [Member] | Ohio [Member] | States and Political Subdivisions [Member]
Amortized Cost And Estimated Fair Value Of Investment Securities Available For Sale By Type Of Bonds [Line Items]
Amortized Cost	0	261
Fair Market Value	0	261
Revenue Bonds [Member] | Washington [Member] | States and Political Subdivisions [Member]
Amortized Cost And Estimated Fair Value Of Investment Securities Available For Sale By Type Of Bonds [Line Items]
Amortized Cost	2,108	1,302
Fair Market Value	2,177	1,299
Revenue Bonds [Member] | Other States | States and Political Subdivisions [Member]
Amortized Cost And Estimated Fair Value Of Investment Securities Available For Sale By Type Of Bonds [Line Items]
Amortized Cost	13,979	11,803
Fair Market Value	$ 14,263	$ 11,812

Credit Quality and Nonperform42

Credit Quality and Nonperforming Assets (Credit Quality Classifications) (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Financing Receivable, Recorded Investment [Line Items]
Total gross loans and leases	$ 1,311,625	$ 1,262,531
Agricultural [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans and leases	49,315	46,229
Commercial And Industrial [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans and leases	111,365	123,595
Mortgage warehouse lines [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans and leases	119,031	163,045
Consumer loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans and leases	10,297	12,165
Real Estate Loan [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans and leases	1,021,617	917,497
Real Estate Loan [Member] | 1-4 family residential construction [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans and leases	53,035	32,417
Real Estate Loan [Member] | Other construction/land [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans and leases	47,160	40,650
Real Estate Loan [Member] | 1-4 Family - closed-end [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans and leases	154,934	137,143
Real Estate Loan [Member] | Equity lines [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans and leases	42,122	43,443
Real Estate Loan [Member] | Multi family residencial [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans and leases	31,414	31,631
Real Estate Loan [Member] | Commercial real estate owner occupied [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans and leases	262,865	253,535
Real Estate Loan [Member] | Commercial Real Estate Non Owner Occupied [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans and leases	284,537	244,198
Real Estate Loan [Member] | Farmland [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans and leases	145,550	134,480
Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans and leases	1,260,465	1,202,623
Pass [Member] | Agricultural [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans and leases	48,663	45,249
Pass [Member] | Commercial And Industrial [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans and leases	98,822	107,404
Pass [Member] | Mortgage warehouse lines [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans and leases	119,031	163,045
Pass [Member] | Consumer loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans and leases	8,609	10,303
Pass [Member] | Real Estate Loan [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans and leases	985,340	876,622
Pass [Member] | Real Estate Loan [Member] | 1-4 family residential construction [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans and leases	53,035	32,417
Pass [Member] | Real Estate Loan [Member] | Other construction/land [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans and leases	46,317	38,699
Pass [Member] | Real Estate Loan [Member] | 1-4 Family - closed-end [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans and leases	148,652	129,726
Pass [Member] | Real Estate Loan [Member] | Equity lines [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans and leases	33,411	35,159
Pass [Member] | Real Estate Loan [Member] | Multi family residencial [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans and leases	31,020	31,058
Pass [Member] | Real Estate Loan [Member] | Commercial real estate owner occupied [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans and leases	253,912	243,366
Pass [Member] | Real Estate Loan [Member] | Commercial Real Estate Non Owner Occupied [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans and leases	275,251	233,584
Pass [Member] | Real Estate Loan [Member] | Farmland [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans and leases	143,742	132,613
Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans and leases	25,776	30,553
Special Mention [Member] | Agricultural [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans and leases	652	891
Special Mention [Member] | Commercial And Industrial [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans and leases	10,539	13,186
Special Mention [Member] | Mortgage warehouse lines [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans and leases	0	0
Special Mention [Member] | Consumer loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans and leases	320	191
Special Mention [Member] | Real Estate Loan [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans and leases	14,265	16,285
Special Mention [Member] | Real Estate Loan [Member] | 1-4 family residential construction [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans and leases	0	0
Special Mention [Member] | Real Estate Loan [Member] | Other construction/land [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans and leases	281	888
Special Mention [Member] | Real Estate Loan [Member] | 1-4 Family - closed-end [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans and leases	626	624
Special Mention [Member] | Real Estate Loan [Member] | Equity lines [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans and leases	3,555	3,165
Special Mention [Member] | Real Estate Loan [Member] | Multi family residencial [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans and leases	0	0
Special Mention [Member] | Real Estate Loan [Member] | Commercial real estate owner occupied [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans and leases	4,343	4,991
Special Mention [Member] | Real Estate Loan [Member] | Commercial Real Estate Non Owner Occupied [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans and leases	4,464	5,597
Special Mention [Member] | Real Estate Loan [Member] | Farmland [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans and leases	996	1,020
Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans and leases	8,514	8,762
Substandard [Member] | Agricultural [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans and leases	0	0
Substandard [Member] | Commercial And Industrial [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans and leases	679	732
Substandard [Member] | Mortgage warehouse lines [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans and leases	0	0
Substandard [Member] | Consumer loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans and leases	68	9
Substandard [Member] | Real Estate Loan [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans and leases	7,767	8,021
Substandard [Member] | Real Estate Loan [Member] | 1-4 family residential construction [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans and leases	0	0
Substandard [Member] | Real Estate Loan [Member] | Other construction/land [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans and leases	0	0
Substandard [Member] | Real Estate Loan [Member] | 1-4 Family - closed-end [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans and leases	794	403
Substandard [Member] | Real Estate Loan [Member] | Equity lines [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans and leases	538	698
Substandard [Member] | Real Estate Loan [Member] | Multi family residencial [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans and leases	0	0
Substandard [Member] | Real Estate Loan [Member] | Commercial real estate owner occupied [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans and leases	2,766	2,892
Substandard [Member] | Real Estate Loan [Member] | Commercial Real Estate Non Owner Occupied [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans and leases	3,154	3,220
Substandard [Member] | Real Estate Loan [Member] | Farmland [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans and leases	515	808
Impaired [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans and leases	16,870	20,593
Impaired [Member] | Agricultural [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans and leases	0	89
Impaired [Member] | Commercial And Industrial [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans and leases	1,325	2,273
Impaired [Member] | Mortgage warehouse lines [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans and leases	0	0
Impaired [Member] | Consumer loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans and leases	1,300	1,662
Impaired [Member] | Real Estate Loan [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans and leases	14,245	16,569
Impaired [Member] | Real Estate Loan [Member] | 1-4 family residential construction [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans and leases	0	0
Impaired [Member] | Real Estate Loan [Member] | Other construction/land [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans and leases	562	1,063
Impaired [Member] | Real Estate Loan [Member] | 1-4 Family - closed-end [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans and leases	4,862	6,390
Impaired [Member] | Real Estate Loan [Member] | Equity lines [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans and leases	4,618	4,421
Impaired [Member] | Real Estate Loan [Member] | Multi family residencial [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans and leases	394	573
Impaired [Member] | Real Estate Loan [Member] | Commercial real estate owner occupied [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans and leases	1,844	2,286
Impaired [Member] | Real Estate Loan [Member] | Commercial Real Estate Non Owner Occupied [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans and leases	1,668	1,797
Impaired [Member] | Real Estate Loan [Member] | Farmland [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans and leases	$ 297	$ 39

Credit Quality and Nonperform43

Credit Quality and Nonperforming Assets (Narrative) (Details)	9 Months Ended
	Sep. 30, 2017USD ($)Property	Dec. 31, 2016USD ($)Property
Credit Quality And Non Performing Assets [Line Items]
Foreclosed assets	$ 2,674,000	$ 2,225,000
Financing Receivable, Modifications, Recorded Investment	14,300,000
Financing Receivable Average Investment Nonaccrual Loans	1,600,000
Purchase Credit Impaired Loans Allowance For Loan Losses	130,000	$ 58,000
Certain Loans Acquired in Transfer Accounted for as Debt Securities, Accretable Yield, Accretion	6,000
Single-Family [Member]
Credit Quality And Non Performing Assets [Line Items]
Foreclosed assets	$ 51,000
Residential Real Estate [Member] | Single-Family [Member]
Credit Quality And Non Performing Assets [Line Items]
Number of residential properties | Property	1	0
Residential Real Estate [Member] | Low-Value Mobile Homes [Member]
Credit Quality And Non Performing Assets [Line Items]
Number of residential properties | Property	2	2

Credit Quality and Nonperform44

Credit Quality and Nonperforming Assets (Past Due and Nonaccrual Loans) (Details) - USD ($) $ in Thousands		Sep. 30, 2017		Dec. 31, 2016
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		$ 2,973		$ 2,487
Current		1,308,652		1,260,044
Total Financing Receivables		1,311,625		1,262,531
Non-Accrual Loans	[1]	4,118		6,365
Real Estate Loan [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		1,770		1,780
Current		1,019,847		915,717
Total Financing Receivables		1,021,617		917,497
Non-Accrual Loans	[1]	3,307		5,125
1-4 family residential construction [Member] | Real Estate Loan [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		0		0
Current		53,035		32,417
Total Financing Receivables		53,035		32,417
Non-Accrual Loans	[1]	0		0
Other construction/land [Member] | Real Estate Loan [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		0		0
Current		47,160		40,650
Total Financing Receivables		47,160		40,650
Non-Accrual Loans	[1]	83		558
1-4 Family - closed-end [Member] | Real Estate Loan [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		928		697
Current		154,006		136,446
Total Financing Receivables		154,934		137,143
Non-Accrual Loans	[1]	886		963
Equity lines [Member] | Real Estate Loan [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		537		717
Current		41,585		42,726
Total Financing Receivables		42,122		43,443
Non-Accrual Loans	[1]	893		1,926
Multi Family Residential [Member] | Real Estate Loan [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		0		0
Current		31,414		31,631
Total Financing Receivables		31,414		31,631
Non-Accrual Loans	[1]	0		0
Commercial Real Estate Non Owner Occupied [Member] | Real Estate Loan [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		0		0
Current		284,537		244,198
Total Financing Receivables		284,537		244,198
Non-Accrual Loans	[1]	0		67
Farmland [Member] | Real Estate Loan [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		0		0
Current		145,550		134,480
Total Financing Receivables		145,550		134,480
Non-Accrual Loans	[1]	297		39
Agricultural [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		0		89
Current		49,315		46,140
Total Financing Receivables		49,315		46,229
Non-Accrual Loans	[1]	0		89
Commercial And Industrial Loan [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		982		463
Current		110,383		123,132
Total Financing Receivables		111,365		123,595
Non-Accrual Loans	[1]	734		692
Mortgage warehouse lines [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		0		0
Current		119,031		163,045
Total Financing Receivables		119,031		163,045
Non-Accrual Loans	[1]	0		0
Consumer Loan [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		221		155
Current		10,076		12,010
Total Financing Receivables		10,297		12,165
Non-Accrual Loans	[1]	77		459
Commercial Real Estate Owner Occupied [Member] | Real Estate Loan [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		305		366
Current		262,560		253,169
Total Financing Receivables		262,865		253,535
Non-Accrual Loans	[1]	1,148		1,572
30-59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		1,492		1,096
30-59 Days Past Due [Member] | Real Estate Loan [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		823		834
30-59 Days Past Due [Member] | 1-4 family residential construction [Member] | Real Estate Loan [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		0		0
30-59 Days Past Due [Member] | Other construction/land [Member] | Real Estate Loan [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		0		0
30-59 Days Past Due [Member] | 1-4 Family - closed-end [Member] | Real Estate Loan [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		298		99
30-59 Days Past Due [Member] | Equity lines [Member] | Real Estate Loan [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		334		397
30-59 Days Past Due [Member] | Multi Family Residential [Member] | Real Estate Loan [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		0		0
30-59 Days Past Due [Member] | Commercial Real Estate Non Owner Occupied [Member] | Real Estate Loan [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		0		0
30-59 Days Past Due [Member] | Farmland [Member] | Real Estate Loan [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		0		0
30-59 Days Past Due [Member] | Agricultural [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		0		0
30-59 Days Past Due [Member] | Commercial And Industrial Loan [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		463		168
30-59 Days Past Due [Member] | Mortgage warehouse lines [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		0		0
30-59 Days Past Due [Member] | Consumer Loan [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		206		94
30-59 Days Past Due [Member] | Commercial Real Estate Owner Occupied [Member] | Real Estate Loan [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		191		338
60-89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		105		35
60-89 Days Past Due [Member] | Real Estate Loan [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		90		23
60-89 Days Past Due [Member] | 1-4 family residential construction [Member] | Real Estate Loan [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		0		0
60-89 Days Past Due [Member] | Other construction/land [Member] | Real Estate Loan [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		0		0
60-89 Days Past Due [Member] | 1-4 Family - closed-end [Member] | Real Estate Loan [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		90		23
60-89 Days Past Due [Member] | Equity lines [Member] | Real Estate Loan [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		0		0
60-89 Days Past Due [Member] | Multi Family Residential [Member] | Real Estate Loan [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		0		0
60-89 Days Past Due [Member] | Commercial Real Estate Non Owner Occupied [Member] | Real Estate Loan [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		0		0
60-89 Days Past Due [Member] | Farmland [Member] | Real Estate Loan [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		0		0
60-89 Days Past Due [Member] | Agricultural [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		0		0
60-89 Days Past Due [Member] | Commercial And Industrial Loan [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		0		3
60-89 Days Past Due [Member] | Mortgage warehouse lines [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		0		0
60-89 Days Past Due [Member] | Consumer Loan [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		15		9
60-89 Days Past Due [Member] | Commercial Real Estate Owner Occupied [Member] | Real Estate Loan [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		0		0
90 Days Or More Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		1,376	[2]	1,356	[3]
90 Days Or More Past Due [Member] | Real Estate Loan [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		857	[2]	923	[3]
90 Days Or More Past Due [Member] | 1-4 family residential construction [Member] | Real Estate Loan [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		0	[2]	0	[3]
90 Days Or More Past Due [Member] | Other construction/land [Member] | Real Estate Loan [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		0	[2]	0	[3]
90 Days Or More Past Due [Member] | 1-4 Family - closed-end [Member] | Real Estate Loan [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		540	[2]	575	[3]
90 Days Or More Past Due [Member] | Equity lines [Member] | Real Estate Loan [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		203	[2]	320	[3]
90 Days Or More Past Due [Member] | Multi Family Residential [Member] | Real Estate Loan [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		0	[2]	0	[3]
90 Days Or More Past Due [Member] | Commercial Real Estate Non Owner Occupied [Member] | Real Estate Loan [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		0	[2]	0	[3]
90 Days Or More Past Due [Member] | Farmland [Member] | Real Estate Loan [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		0	[2]	0	[3]
90 Days Or More Past Due [Member] | Agricultural [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		0	[2]	89	[3]
90 Days Or More Past Due [Member] | Commercial And Industrial Loan [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		519	[2]	292	[3]
90 Days Or More Past Due [Member] | Mortgage warehouse lines [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		0	[2]	0	[3]
90 Days Or More Past Due [Member] | Consumer Loan [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		0	[2]	52	[3]
90 Days Or More Past Due [Member] | Commercial Real Estate Owner Occupied [Member] | Real Estate Loan [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		$ 114	[2]	$ 28	[3]
[1]	Included in total financing receivables
[2]	As of September 30, 2017 there were no loans over 90 days past due and still accruing.
[3]	As of December 31, 2016 there were no loans over 90 days past due and still accruing.

Credit Quality and Nonperform45

Credit Quality and Nonperforming Assets (Troubled Debt Restructurings, by Type of Loan Modification) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Financing Receivable, Modifications [Line Items]
Financing Receivable Modifications Post Modification Recorded Investment During Period	$ 922	$ 673	$ 1,630	$ 3,254
Consumer Loan [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable Modifications Post Modification Recorded Investment During Period	7	5	7	85
Commercial And Industrial Loans [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable Modifications Post Modification Recorded Investment During Period	0	0	15	0
Real Estate Loans [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable Modifications Post Modification Recorded Investment During Period	915	668	1,608	3,169
Real Estate Loans [Member] | Farmland [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable Modifications Post Modification Recorded Investment During Period	0	258	0	258
Real Estate Loans [Member] | Other Construction Land [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable Modifications Post Modification Recorded Investment During Period	0	0	0	17
Real Estate Loans [Member] | One to Four Family [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable Modifications Post Modification Recorded Investment During Period	250	178	340	984
Real Estate Loans [Member] | Equity Line Of Credit [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable Modifications Post Modification Recorded Investment During Period	136	232	739	1,512
Real Estate Loans [Member] | Multifamily [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable Modifications Post Modification Recorded Investment During Period	0	0	0	132
Real Estate Loans [Member] | Commercial Real Estate Owner Occupied [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable Modifications Post Modification Recorded Investment During Period	529	0	529	266
Troubled Debt Restructurings Term Modifications [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable Modifications Post Modification Recorded Investment During Period	576	140	1,194	1,457
Troubled Debt Restructurings Term Modifications [Member] | Consumer Loan [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable Modifications Post Modification Recorded Investment During Period	7	5	7	25
Troubled Debt Restructurings Term Modifications [Member] | Commercial And Industrial Loans [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable Modifications Post Modification Recorded Investment During Period	0	0	15	0
Troubled Debt Restructurings Term Modifications [Member] | Real Estate Loans [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable Modifications Post Modification Recorded Investment During Period	569	135	1,172	1,432
Troubled Debt Restructurings Term Modifications [Member] | Real Estate Loans [Member] | Farmland [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable Modifications Post Modification Recorded Investment During Period	0	0	0	0
Troubled Debt Restructurings Term Modifications [Member] | Real Estate Loans [Member] | Other Construction Land [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable Modifications Post Modification Recorded Investment During Period	0	0	0	17
Troubled Debt Restructurings Term Modifications [Member] | Real Estate Loans [Member] | One to Four Family [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable Modifications Post Modification Recorded Investment During Period	0	0	0	0
Troubled Debt Restructurings Term Modifications [Member] | Real Estate Loans [Member] | Equity Line Of Credit [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable Modifications Post Modification Recorded Investment During Period	40	135	643	1,415
Troubled Debt Restructurings Term Modifications [Member] | Real Estate Loans [Member] | Multifamily [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable Modifications Post Modification Recorded Investment During Period	0	0	0	0
Troubled Debt Restructurings Term Modifications [Member] | Real Estate Loans [Member] | Commercial Real Estate Owner Occupied [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable Modifications Post Modification Recorded Investment During Period	529	0	529	0
Troubled Debt Restructurings Interest Only Modification [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable Modifications Post Modification Recorded Investment During Period	0	0	0	547
Troubled Debt Restructurings Interest Only Modification [Member] | Consumer Loan [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable Modifications Post Modification Recorded Investment During Period	0	0	0	0
Troubled Debt Restructurings Interest Only Modification [Member] | Commercial And Industrial Loans [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable Modifications Post Modification Recorded Investment During Period	0	0	0	0
Troubled Debt Restructurings Interest Only Modification [Member] | Real Estate Loans [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable Modifications Post Modification Recorded Investment During Period	0	0	0	547
Troubled Debt Restructurings Interest Only Modification [Member] | Real Estate Loans [Member] | Farmland [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable Modifications Post Modification Recorded Investment During Period	0	0	0	0
Troubled Debt Restructurings Interest Only Modification [Member] | Real Estate Loans [Member] | Other Construction Land [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable Modifications Post Modification Recorded Investment During Period	0	0	0	0
Troubled Debt Restructurings Interest Only Modification [Member] | Real Estate Loans [Member] | One to Four Family [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable Modifications Post Modification Recorded Investment During Period	0	0	0	547
Troubled Debt Restructurings Interest Only Modification [Member] | Real Estate Loans [Member] | Equity Line Of Credit [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable Modifications Post Modification Recorded Investment During Period	0	0	0	0
Troubled Debt Restructurings Interest Only Modification [Member] | Real Estate Loans [Member] | Multifamily [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable Modifications Post Modification Recorded Investment During Period	0	0	0	0
Troubled Debt Restructurings Interest Only Modification [Member] | Real Estate Loans [Member] | Commercial Real Estate Owner Occupied [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable Modifications Post Modification Recorded Investment During Period	0	0	0	0
Troubled Debt Restructurings Rate And Term Modifications [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable Modifications Post Modification Recorded Investment During Period	346	533	436	1,250
Troubled Debt Restructurings Rate And Term Modifications [Member] | Consumer Loan [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable Modifications Post Modification Recorded Investment During Period	0	0	0	60
Troubled Debt Restructurings Rate And Term Modifications [Member] | Commercial And Industrial Loans [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable Modifications Post Modification Recorded Investment During Period	0	0	0	0
Troubled Debt Restructurings Rate And Term Modifications [Member] | Real Estate Loans [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable Modifications Post Modification Recorded Investment During Period	346	533	436	1,190
Troubled Debt Restructurings Rate And Term Modifications [Member] | Real Estate Loans [Member] | Farmland [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable Modifications Post Modification Recorded Investment During Period	0	258	0	258
Troubled Debt Restructurings Rate And Term Modifications [Member] | Real Estate Loans [Member] | Other Construction Land [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable Modifications Post Modification Recorded Investment During Period	0	0	0	0
Troubled Debt Restructurings Rate And Term Modifications [Member] | Real Estate Loans [Member] | One to Four Family [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable Modifications Post Modification Recorded Investment During Period	250	178	340	437
Troubled Debt Restructurings Rate And Term Modifications [Member] | Real Estate Loans [Member] | Equity Line Of Credit [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable Modifications Post Modification Recorded Investment During Period	96	97	96	97
Troubled Debt Restructurings Rate And Term Modifications [Member] | Real Estate Loans [Member] | Multifamily [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable Modifications Post Modification Recorded Investment During Period	0	0	0	132
Troubled Debt Restructurings Rate And Term Modifications [Member] | Real Estate Loans [Member] | Commercial Real Estate Owner Occupied [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable Modifications Post Modification Recorded Investment During Period	$ 0	$ 0	$ 0	$ 266

Credit Quality and Nonperform46

Credit Quality and Nonperforming Assets (Troubled Debt Restructurings) (Details) $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2017USD ($)Number	Sep. 30, 2016USD ($)Number	Sep. 30, 2017USD ($)Number	Sep. 30, 2016USD ($)Number
Financing Receivable, Modifications [Line Items]
Pre-Modification Outstanding Recorded Investment		$ 922	$ 672	$ 1,630	$ 3,253
Post-Modification Outstanding Recorded Investment		922	673	1,630	3,254
Reserve Difference	[1]	3	30	117	56
Reserve		$ 18	$ 97	$ 45	$ 171
Consumer Loan [Member]
Financing Receivable, Modifications [Line Items]
Number of Loans | Number		1	1	1	4
Pre-Modification Outstanding Recorded Investment		$ 7	$ 4	$ 7	$ 84
Post-Modification Outstanding Recorded Investment		7	5	7	85
Reserve Difference	[1]	0	0	0	(7)
Reserve		$ 2	$ 0	$ 2	$ 6
Commercial And Industrial Loans [Member]
Financing Receivable, Modifications [Line Items]
Number of Loans | Number		0	0	1	0
Pre-Modification Outstanding Recorded Investment		$ 0	$ 0	$ 15	$ 0
Post-Modification Outstanding Recorded Investment		0	0	15	0
Reserve Difference	[1]	0	0	0	0
Reserve		0	0	0	0
Real Estate Loans [Member]
Financing Receivable, Modifications [Line Items]
Pre-Modification Outstanding Recorded Investment		915	668	1,608	3,169
Post-Modification Outstanding Recorded Investment		915	668	1,608	3,169
Reserve Difference	[1]	3	30	117	63
Reserve		$ 16	$ 97	$ 43	165
Real Estate Loans [Member] | Farmland [Member]
Financing Receivable, Modifications [Line Items]
Number of Loans | Number		0	1	0
Pre-Modification Outstanding Recorded Investment		$ 0	$ 258	$ 0
Post-Modification Outstanding Recorded Investment		0	258	0	$ 258
Reserve Difference	[1]	0	(26)	0
Reserve		$ 0	$ 0	$ 0
Real Estate Loans [Member] | Other construction/Land [Member]
Financing Receivable, Modifications [Line Items]
Number of Loans | Number		0	0	0	1
Pre-Modification Outstanding Recorded Investment		$ 0	$ 0	$ 0	$ 17
Post-Modification Outstanding Recorded Investment		0	0	0	17
Reserve Difference	[1]	0	0	0	0
Reserve		$ 0	$ 0	$ 0	$ 2
Real Estate Loans [Member] | One to Four Family [Member]
Financing Receivable, Modifications [Line Items]
Number of Loans | Number		3	3	6	8
Pre-Modification Outstanding Recorded Investment		$ 250	$ 178	$ 340	$ 984
Post-Modification Outstanding Recorded Investment		250	178	340	984
Reserve Difference	[1]	0	41	32	116
Reserve		$ 8	$ 80	$ 12	$ 107
Real Estate Loans [Member] | Equity Line Of Credit [Member]
Financing Receivable, Modifications [Line Items]
Number of Loans | Number		2	3	7	13
Pre-Modification Outstanding Recorded Investment		$ 136	$ 232	$ 739	$ 1,512
Post-Modification Outstanding Recorded Investment		136	232	739	1,512
Reserve Difference	[1]	3	15	85	(27)
Reserve		$ 2	$ 17	$ 25	$ 46
Real Estate Loans [Member] | Multifamily [Member]
Financing Receivable, Modifications [Line Items]
Number of Loans | Number		0	0	0	1
Pre-Modification Outstanding Recorded Investment		$ 0	$ 0	$ 0	$ 132
Post-Modification Outstanding Recorded Investment		0	0	0	132
Reserve Difference	[1]	0	0	0	0
Reserve		$ 0	$ 0	$ 0	$ 6
Real Estate Loans [Member] | Commercial Real Estate Owner Occupied [Member]
Financing Receivable, Modifications [Line Items]
Number of Loans | Number		1	0	1	1
Pre-Modification Outstanding Recorded Investment		$ 529	$ 0	$ 529	$ 266
Post-Modification Outstanding Recorded Investment		529	0	529	266
Reserve Difference	[1]	0	0	0	0
Reserve		$ 6	$ 0	$ 6	$ 4
[1]	This represents the change in the ALLL reserve for these credits measured as the difference between the specific post-modification impairment reserve and the pre-modification reserve calculated under our general allowance for loan loss methodology.

Credit Quality and Nonperform47

Credit Quality and Nonperforming Assets (Carrying Amount and Unpaid Principal Balance of Purchased Credit Impaired Loans) (Details) - USD ($) $ in Thousands		Sep. 30, 2017	Dec. 31, 2016
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, Unpaid Principal Balance, Total	[1]	$ 19,723	$ 23,144
Impaired Financing Receivable, Carrying Value, Total	[2]	16,870	20,593
Purchased Credit Impaired Loans [Member]
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, Unpaid Principal Balance, Total		262	735
Impaired Financing Receivable, Carrying Value, Total		37	47
Purchased Credit Impaired Loans [Member] | Commercial And Industrial Loans [Member]
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, Unpaid Principal Balance, Total		8	23
Purchased Credit Impaired Loans [Member] | Real Estate Loans [Member]
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, Unpaid Principal Balance, Total		254	712
Impaired Financing Receivable, Carrying Value, Total		$ 37	$ 47
[1]	Contractual principal balance due from customer.
[2]	Principal balance on Company's books, less any direct charge offs.

Allowance for Loan and Lease 48

Allowance for Loan and Lease Losses (Narrative) (Details) - USD ($)	Sep. 30, 2017	Dec. 31, 2016
Receivables [Abstract]
Impaired Financing Receivable With Specific Reserves	$ 886,000	$ 1,048,000
General	$ 7,738,000

Allowance for Loan and Lease 49

Allowance for Loan and Lease Losses (Individually Impaired Loans) (Details) - USD ($) $ in Thousands		9 Months Ended	12 Months Ended
		Sep. 30, 2017	Dec. 31, 2016
Financing Receivable, Impaired [Line Items]
With an Allowance Recorded Unpaid Principal Balance	[1]	$ 15,947	$ 20,180
With an Allowance Recorded Recorded Investment	[2]	13,450	17,846
With an Allowance Recorded Related Allowance		1,046	1,407
With an Allowance Recorded Average Recorded Investment		18,385	21,463
With an Allowance Recorded Interest Income Recognized	[3]	751	913
With no Related Allowance Recorded Unpaid Principal Balance	[1]	3,776	2,964
With no Related Allowance Recorded Recorded Investment	[2]	3,420	2,747
With no Related Allowance Recorded Related Allowance		0	0
With no Related Allowance Recorded Average Recorded Investment		4,848	4,097
With no Related Allowance Recorded Interest Income Recognized	[3]	10	128
Individually impaired loans Unpaid Principal Balance	[1]	19,723	23,144
Total impaired loans	[2]	16,870	20,593
Individually impaired loans Related Allowance		1,046
Individually impaired loans Average Recorded Investment		23,233	25,560
Individually impaired loans Interest Income Recognized	[3]	761	1,041
Individually impaired loans Related Allowance			1,407
Agricultural [Member]
Financing Receivable, Impaired [Line Items]
With an Allowance Recorded Unpaid Principal Balance	[1]	0	24
With an Allowance Recorded Recorded Investment	[2]	0	24
With an Allowance Recorded Related Allowance		0	24
With an Allowance Recorded Average Recorded Investment		0	24
With an Allowance Recorded Interest Income Recognized	[3]	0	0
With no Related Allowance Recorded Unpaid Principal Balance	[1]	132	65
With no Related Allowance Recorded Recorded Investment	[2]	0	65
With no Related Allowance Recorded Related Allowance		0	0
With no Related Allowance Recorded Average Recorded Investment		397	65
With no Related Allowance Recorded Interest Income Recognized	[3]	0	0
Commercial And Industrial [Member]
Financing Receivable, Impaired [Line Items]
With an Allowance Recorded Unpaid Principal Balance	[1]	739	2,211
With an Allowance Recorded Recorded Investment	[2]	707	2,211
With an Allowance Recorded Related Allowance		170	608
With an Allowance Recorded Average Recorded Investment		1,826	2,652
With an Allowance Recorded Interest Income Recognized	[3]	74	99
With no Related Allowance Recorded Unpaid Principal Balance	[1]	619	62
With no Related Allowance Recorded Recorded Investment	[2]	618	62
With no Related Allowance Recorded Related Allowance		0	0
With no Related Allowance Recorded Average Recorded Investment		854	277
With no Related Allowance Recorded Interest Income Recognized	[3]	0	0
Consumer Loan [Member]
Financing Receivable, Impaired [Line Items]
With an Allowance Recorded Unpaid Principal Balance	[1]	1,280	1,633
With an Allowance Recorded Recorded Investment	[2]	1,270	1,633
With an Allowance Recorded Related Allowance		230	287
With an Allowance Recorded Average Recorded Investment		1,461	1,847
With an Allowance Recorded Interest Income Recognized	[3]	75	94
With no Related Allowance Recorded Unpaid Principal Balance	[1]	155	148
With no Related Allowance Recorded Recorded Investment	[2]	30	29
With no Related Allowance Recorded Related Allowance		0	0
With no Related Allowance Recorded Average Recorded Investment		238	238
With no Related Allowance Recorded Interest Income Recognized	[3]	0	0
Real Estate Loan [Member]
Financing Receivable, Impaired [Line Items]
With an Allowance Recorded Unpaid Principal Balance	[1]	13,928	16,312
With an Allowance Recorded Recorded Investment	[2]	11,473	13,978
With an Allowance Recorded Related Allowance		646	488
With an Allowance Recorded Average Recorded Investment		15,098	16,940
With an Allowance Recorded Interest Income Recognized	[3]	602	720
With no Related Allowance Recorded Unpaid Principal Balance	[1]	2,870	2,689
With no Related Allowance Recorded Recorded Investment	[2]	2,772	2,591
With no Related Allowance Recorded Related Allowance		0	0
With no Related Allowance Recorded Average Recorded Investment		3,359	3,517
With no Related Allowance Recorded Interest Income Recognized	[3]	10	128
Real Estate Loan [Member] | Construction and Land Development [Member]
Financing Receivable, Impaired [Line Items]
With an Allowance Recorded Unpaid Principal Balance	[1]	688	854
With an Allowance Recorded Recorded Investment	[2]	533	699
With an Allowance Recorded Related Allowance		31	20
With an Allowance Recorded Average Recorded Investment		772	624
With an Allowance Recorded Interest Income Recognized	[3]	33	14
With no Related Allowance Recorded Unpaid Principal Balance	[1]	29	364
With no Related Allowance Recorded Recorded Investment	[2]	29	364
With no Related Allowance Recorded Related Allowance		0	0
With no Related Allowance Recorded Average Recorded Investment		34	374
With no Related Allowance Recorded Interest Income Recognized	[3]	0	27
Real Estate Loan [Member] | 1-4 Family - closed-end [Member]
Financing Receivable, Impaired [Line Items]
With an Allowance Recorded Unpaid Principal Balance	[1]	6,108	7,730
With an Allowance Recorded Recorded Investment	[2]	4,160	5,783
With an Allowance Recorded Related Allowance		88	163
With an Allowance Recorded Average Recorded Investment		6,933	8,008
With an Allowance Recorded Interest Income Recognized	[3]	314	462
With no Related Allowance Recorded Unpaid Principal Balance	[1]	760	666
With no Related Allowance Recorded Recorded Investment	[2]	702	607
With no Related Allowance Recorded Related Allowance		0	0
With no Related Allowance Recorded Average Recorded Investment		828	685
With no Related Allowance Recorded Interest Income Recognized	[3]	2	3
Real Estate Loan [Member] | Equity lines [Member]
Financing Receivable, Impaired [Line Items]
With an Allowance Recorded Unpaid Principal Balance	[1]	4,404	3,991
With an Allowance Recorded Recorded Investment	[2]	4,318	3,906
With an Allowance Recorded Related Allowance		327	214
With an Allowance Recorded Average Recorded Investment		4,550	4,110
With an Allowance Recorded Interest Income Recognized	[3]	113	49
With no Related Allowance Recorded Unpaid Principal Balance	[1]	329	544
With no Related Allowance Recorded Recorded Investment	[2]	300	515
With no Related Allowance Recorded Related Allowance		0	0
With no Related Allowance Recorded Average Recorded Investment		333	550
With no Related Allowance Recorded Interest Income Recognized	[3]	0	0
Real Estate Loan [Member] | Multi Family Residential [Member]
Financing Receivable, Impaired [Line Items]
With an Allowance Recorded Unpaid Principal Balance	[1]	394	573
With an Allowance Recorded Recorded Investment	[2]	394	573
With an Allowance Recorded Related Allowance		30	7
With an Allowance Recorded Average Recorded Investment		412	588
With an Allowance Recorded Interest Income Recognized	[3]	17	50
Real Estate Loan [Member] | Commercial Real Estate Owner Occupied [Member]
Financing Receivable, Impaired [Line Items]
With an Allowance Recorded Unpaid Principal Balance	[1]	519	1,287
With an Allowance Recorded Recorded Investment	[2]	400	1,287
With an Allowance Recorded Related Allowance		136	49
With an Allowance Recorded Average Recorded Investment		524	1,641
With an Allowance Recorded Interest Income Recognized	[3]	30	14
With no Related Allowance Recorded Unpaid Principal Balance	[1]	1,445	999
With no Related Allowance Recorded Recorded Investment	[2]	1,444	999
With no Related Allowance Recorded Related Allowance		0	0
With no Related Allowance Recorded Average Recorded Investment		1,808	1,773
With no Related Allowance Recorded Interest Income Recognized	[3]	8	98
Real Estate Loan [Member] | Commercial Real Estate Non Owner Occupied [Member]
Financing Receivable, Impaired [Line Items]
With an Allowance Recorded Unpaid Principal Balance	[1]	1,815	1,877
With an Allowance Recorded Recorded Investment	[2]	1,668	1,730
With an Allowance Recorded Related Allowance		34	35
With an Allowance Recorded Average Recorded Investment		1,907	1,969
With an Allowance Recorded Interest Income Recognized	[3]	95	131
With no Related Allowance Recorded Unpaid Principal Balance	[1]	10	77
With no Related Allowance Recorded Recorded Investment	[2]	0	67
With no Related Allowance Recorded Related Allowance		0	0
With no Related Allowance Recorded Average Recorded Investment		28	85
With no Related Allowance Recorded Interest Income Recognized	[3]	0	0
Real Estate Loan [Member] | Farmland [Member]
Financing Receivable, Impaired [Line Items]
With no Related Allowance Recorded Unpaid Principal Balance	[1]	297	39
With no Related Allowance Recorded Recorded Investment	[2]	297	39
With no Related Allowance Recorded Related Allowance		0	0
With no Related Allowance Recorded Average Recorded Investment		328	50
With no Related Allowance Recorded Interest Income Recognized	[3]	$ 0	$ 0
[1]	Contractual principal balance due from customer.
[2]	Principal balance on Company's books, less any direct charge offs.
[3]	Interest income is recognized on performing balances on a regular accrual basis.

Allowance for Loan and Lease 50

Allowance for Loan and Lease Losses (Activity in Allowance for Loan and Lease Losses) (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended	12 Months Ended
	Sep. 30, 2017	Sep. 30, 2017	Dec. 31, 2016
Allowance for credit losses:
Beginning Balance	$ 9,230	$ 9,701	$ 10,423
Charge-offs	(886)	(2,482)	(3,211)
Recoveries	440	1,265	2,489
Provision		300
Ending Balance	8,784	8,784	9,701
Reserves:
Specific	1,046	1,046	1,407
General	7,738	7,738	8,294
Ending Balance	8,784	8,784	9,701
Loans evaluated for impairment:
Individually	16,870	16,870	20,593
Collectively	1,294,755	1,294,755	1,241,938
Ending Balance	1,311,625	1,311,625	1,262,531
Unallocated [Member]
Allowance for credit losses:
Beginning Balance	282	457	1,122
Provision	(224)	(399)	(665)
Ending Balance	58	58	457
Reserves:
General	58	58	457
Ending Balance	58	58	457
Agricultural Products [Member]
Allowance for credit losses:
Beginning Balance	243	209	722
Charge-offs	(132)	(154)
Recoveries		5	14
Provision	108	159	(527)
Ending Balance	219	219	209
Reserves:
Specific			24
General	219	219	185
Ending Balance	219	219	209
Loans evaluated for impairment:
Individually			89
Collectively	49,315	49,315	46,140
Ending Balance	49,315	49,315	46,229
Commercial and Industrial [Member]
Allowance for credit losses:
Beginning Balance	3,452	4,279	2,533
Charge-offs	(192)	(576)	(344)
Recoveries	87	282	477
Provision	(568)	(1,206)	1,613
Ending Balance	2,779	2,779	4,279
Reserves:
Specific	170	170	608
General	2,609	2,609	3,671
Ending Balance	2,779	2,779	4,279
Loans evaluated for impairment:
Individually	1,325	1,325	2,273
Collectively	229,071	229,071	284,367
Ending Balance	230,396	230,396	286,640
Consumer Loan [Member]
Allowance for credit losses:
Beginning Balance	1,149	1,208	1,263
Charge-offs	(561)	(1,606)	(1,905)
Recoveries	284	764	1,015
Provision	315	821	835
Ending Balance	1,187	1,187	1,208
Reserves:
Specific	230	230	287
General	957	957	921
Ending Balance	1,187	1,187	1,208
Loans evaluated for impairment:
Individually	1,300	1,300	1,662
Collectively	8,997	8,997	10,503
Ending Balance	10,297	10,297	12,165
Real Estate Loan [Member]
Allowance for credit losses:
Beginning Balance	4,104	3,548	4,783
Charge-offs	(1)	(146)	(962)
Recoveries	69	214	983
Provision	369	925	(1,256)
Ending Balance	4,541	4,541	3,548
Reserves:
Specific	646	646	488
General	3,895	3,895	3,060
Ending Balance	4,541	4,541	3,548
Loans evaluated for impairment:
Individually	14,245	14,245	16,569
Collectively	1,007,372	1,007,372	900,928
Ending Balance	$ 1,021,617	$ 1,021,617	$ 917,497

Recent Developments (Narrative)

Recent Developments (Narrative) (Details) - USD ($) shares in Thousands	Apr. 24, 2017	Sep. 30, 2017	May 31, 2017	Jul. 08, 2016
OCB Bancorp [Member]
Recent Developments [Line Items]
Business acquisition, Date of acquisition agreement		Apr. 24, 2017
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares	1,376
Payments to Acquire Businesses, Gross	$ 1,200,000
Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Current Assets Loans	220,000,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Marketable Securities	5,000,000
Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Deposits	$ 231,000,000
Amortization period of core deposit intangibles	8 years
OCB Bancorp [Member] | Minimum [Member]
Recent Developments [Line Items]
Business Acquisition, Transaction Costs	$ 2,500,000
OCB Bancorp [Member] | Maximum [Member]
Recent Developments [Line Items]
Business Acquisition, Transaction Costs	$ 3,000,000
Citizens Business Bank [Member]
Recent Developments [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets			$ 500,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Financial Liabilities			$ 26,000,000
Coast Bancorp [Member]
Recent Developments [Line Items]
Business Acquisition, Transaction Costs				$ 2,400,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Financial Liabilities				129,000,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities, Long-term Debt				94,000,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Financial Assets				7,000,000
Doubtful Securities Fair Value				$ 3,400,000