Sierra Bancorp (BSRR) 10-Q 7 May 19 2019 Q1 Quarterly report Financial data

Document And Entity Information

Document And Entity Information - shares	3 Months Ended
	Mar. 31, 2019	May 01, 2019
Document And Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Mar. 31, 2019
Document Fiscal Year Focus	2019
Document Fiscal Period Focus	Q1
Entity Registrant Name	SIERRA BANCORP
Entity Central Index Key	0001130144
Current Fiscal Year End Date	--12-31
Entity Filer Category	Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Trading Symbol	BSRR
Entity Common Stock, Shares Outstanding		15,328,430

CONSOLIDATED BALANCE SHEETS

CONSOLIDATED BALANCE SHEETS - USD ($)	Mar. 31, 2019	Dec. 31, 2018
ASSETS
Cash and due from banks	$ 58,940,000	$ 72,439,000
Interest-bearing deposits in banks	9,123,000	1,693,000
Total cash & cash equivalents	68,063,000	74,132,000
Securities available-for-sale	563,628,000	560,479,000
Loans and leases:
Gross loans and leases	1,750,989,000	1,731,928,000
Allowance for loan and lease losses	(9,438,000)	(9,750,000)
Deferred loan and lease costs, net	2,787,000	2,602,000
Net loans and leases	1,744,338,000	1,724,780,000
Foreclosed assets	806,000	1,082,000
Premises and equipment, net	28,855,000	29,500,000
Goodwill	27,357,000	27,357,000
Other intangible assets, net	6,187,000	6,455,000
Bank-owned life insurance	49,270,000	48,153,000
Other assets	50,583,000	50,564,000
Total assets	2,539,087,000	2,522,502,000
Deposits:
Non-interest bearing	658,524,000	662,527,000
Interest bearing	1,502,224,000	1,453,813,000
Total deposits	2,160,748,000	2,116,340,000
Repurchase agreements	19,360,000	16,359,000
Short-term borrowings		56,100,000
Subordinated debentures, net	34,811,000	34,767,000
Other liabilities	40,100,000	25,912,000
Total liabilities	2,255,019,000	2,249,478,000
Commitments and contingent liabilities (Note 8)
Shareholders' equity
Common stock, no par value; 24,000,000 shares authorized; 15,328,030 and 15,300,460 shares issued and outstanding at March 31, 2019 and December 31, 2018, respectively	113,001,000	112,507,000
Additional paid-in capital	3,135,000	3,066,000
Retained earnings	170,258,000	164,117,000
Accumulated other comprehensive loss, net	(2,326,000)	(6,666,000)
Total shareholders' equity	284,068,000	273,024,000
Total liabilities and shareholder's equity	$ 2,539,087,000	$ 2,522,502,000

CONSOLIDATED BALANCE SHEETS (Pa

CONSOLIDATED BALANCE SHEETS (Parenthetical) - $ / shares	Mar. 31, 2019	Dec. 31, 2018
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	15,328,030	15,300,460
Common Stock, Shares, Outstanding	15,328,030	15,300,460

CONSOLIDATED STATEMENTS OF INCO

CONSOLIDATED STATEMENTS OF INCOME - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Interest and dividend income
Loans and leases, including fees	$ 23,748	$ 20,004
Taxable securities	2,617	2,338
Tax-exempt securities	1,045	1,016
Federal funds sold and other	73	118
Total interest income	27,483	23,476
Interest expense
Deposits	2,955	1,318
Short-term borrowings	72	13
Subordinated debentures	483	385
Total interest expense	3,510	1,716
Net interest income	23,973	21,760
Provision for loan losses	300	200
Net interest income after provision for loan losses	23,673	21,560
Non-interest income
Service charges on deposits	2,943	2,946
Other income	2,963	2,187
Total non-interest income	5,906	5,133
Other operating expense
Salaries and employee benefits	9,243	9,183
Occupancy and equipment	2,361	2,348
Other	6,248	6,356
Total other operating expense	17,852	17,887
Income before taxes	11,727	8,806
Provision for income taxes	2,832	2,096
Net income	$ 8,895	$ 6,710
PER SHARE DATA
Book value	$ 18.53	$ 16.75
Cash dividends	0.18	0.16
Earnings per share basic	0.58	0.44
Earnings per share diluted	$ 0.58	$ 0.44
Average shares outstanding, basic	15,311,154	15,232,696
Average shares outstanding, diluted	15,447,747	15,412,168
Total shareholder equity (in thousands)	$ 284,068	$ 255,320
Shares outstanding	15,328,030	15,246,780
Dividends paid (in thousands)	$ 2,754	$ 2,437

CONSOLIDATED STATEMENTS OF COMP

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2019	Mar. 31, 2018
Statement Of Income And Comprehensive Income [Abstract]
Net income		$ 8,895	$ 6,710
Unrealized gains (losses) on securities:
Unrealized holding gain (loss) arising during period		6,167	(7,592)
Less: reclassification adjustment for gains included in net income	[1]	(6)
Other comprehensive income (loss), before tax		6,161	(7,592)
Income tax expense related to items of other comprehensive income (loss), net of tax		(1,821)	2,245
Other comprehensive income (loss)		4,340	(5,347)
Comprehensive income		$ 13,235	$ 1,363
[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 March 31, 2019 and 2018 was $2 thousand and $0 thousand respectively.

CONSOLIDATED STATEMENTS OF CO_2

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Parenthetical) - USD ($)	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Statement Of Income And Comprehensive Income [Abstract]
Reclassification adjustment for gain on securities available-for-sale included in net income, tax	$ 2,000	$ 0

CONSOLIDATED STATEMENT OF CHANG

CONSOLIDATED STATEMENT OF CHANGES IN SHAREHOLDERS' EQUITY - USD ($) $ in Thousands	Total	Common Stock [Member]	Additional Paid In Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income (loss) [Member]
Balance at Dec. 31, 2017	$ 255,942	$ 111,138	$ 2,937	$ 144,197	$ (2,330)
Balance (in shares) at Dec. 31, 2017		15,223,360
Net income	6,710			6,710
Other comprehensive income (loss), net of tax	(5,347)				(5,347)
Exercise of stock options	382	$ 460	(78)
Exercise of stock options (in shares)		23,420
Stock compensation costs	76		76
Stock issued-acquisition	(6)		(6)
Cash dividends	(2,437)			(2,437)
Balance at Mar. 31, 2018	255,320	$ 111,598	2,929	148,470	(7,677)
Balance (in shares) at Mar. 31, 2018		15,246,780
Balance at Dec. 31, 2018	273,024	$ 112,507	3,066	164,117	(6,666)
Balance (in shares) at Dec. 31, 2018		15,300,460
Net income	8,895			8,895
Other comprehensive income (loss), net of tax	4,340				4,340
Exercise of stock options	412	$ 494	(82)
Exercise of stock options (in shares)		27,570
Stock compensation costs	151		151
Cash dividends	(2,754)			(2,754)
Balance at Mar. 31, 2019	$ 284,068	$ 113,001	$ 3,135	$ 170,258	$ (2,326)
Balance (in shares) at Mar. 31, 2019		15,328,030

CONSOLIDATED STATEMENT OF CHA_2

CONSOLIDATED STATEMENT OF CHANGES IN SHAREHOLDERS' EQUITY (Parenthetical) - $ / shares	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Statement Of Stockholders Equity [Abstract]
Common Stock, Dividends, Per Share, Declared	$ 18	$ 16

CONSOLIDATED STATEMENTS OF CASH

CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Cash flows from operating activities:
Net income	$ 8,895,000	$ 6,710,000
Adjustments to reconcile net income to net cash provided by operating activities:
Gain on sales of securities	(6,000)	0
Loss on disposal of fixed assets	12,000	0
Gain on sale on foreclosed assets	(16,000)	0
Writedowns on foreclosed assets	20,000	110,000
Share-based compensation expense	151,000	76,000
Provision for loan losses	300,000	200,000
Depreciation and amortization	754,000	785,000
Net amortization on securities premiums and discounts	1,030,000	1,423,000
Accretion of discounts for loans acquired and net deferred loan fees	(266,000)	(356,000)
Increase in cash surrender value of life insurance policies	(900,000)	(204,000)
Amortization of core deposit intangible	269,000	230,000
(Increase) decrease in interest receivable and other assets	(203,000)	2,633,000
Increase (decrease) in other liabilities	4,476,000	(3,020,000)
Deferred income tax benefit (provision)	2,000	(953,000)
Net amortization of partnership investment	450,000	405,000
Net cash provided by operating activities	14,968,000	8,039,000
Cash flows from investing activities:
Maturities and calls of securities available for sale	1,150,000	200,000
Proceeds from sales of securities available for sale	15,504,000	0
Purchases of securities available for sale	(34,469,000)	(36,750,000)
Principal pay downs on securities available for sale	19,803,000	22,282,000
Loan originations and payments, net	(19,618,000)	(34,471,000)
Purchases of premises and equipment	(87,000)	(412,000)
Proceeds from sale premises and equipment	10,000	0
Proceeds from sales of foreclosed assets	7,920,000	0
Purchase of bank-owned life insurance	(217,000)	(278,000)
Net cash from bank acquisition	0	(6,000)
Net cash used in investing activities	(10,004,000)	(49,435,000)
Cash flows from financing activities:
Increase in deposits	44,408,000	48,244,000
Decrease in borrowed funds	(56,100,000)	(16,100,000)
Increase in Fed funds purchased	0	300,000
Increase in repurchase agreements	3,001,000	4,379,000
Cash dividends paid	(2,754,000)	(2,437,000)
Stock options exercised	412,000	382,000
Net cash (used in) provided by financing activities	(11,033,000)	34,768,000
Decrease in cash and due from banks	(6,069,000)	(6,628,000)
Cash and cash equivalents, Beginning of period	74,132,000	70,137,000
Cash and cash equivalents, End of period	$ 68,063,000	$ 63,509,000

The Business of Sierra Bancorp

The Business of Sierra Bancorp	3 Months Ended
	Mar. 31, 2019
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 March 31, 2019, 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 wide range of retail and commercial banking services via branch offices located throughout 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 2017. We also acquired a branch located in Lompoc, California from Community Bank of Santa Maria in May 2018, and we opened a new branch on Palm Avenue in Fresno in September 2018. As of the filing date of this report the Bank operates 40 full service branches and an online branch, and maintains ATMs at all but one of our branch locations as well as seven non-branch locations. Moreover, the Bank has specialized lending units which focus on agricultural borrowers, SBA loans, and mortgage warehouse lending. The Company had total assets of $2.5 billion at March 31, 2019, and for a number of years we have claimed the distinction of being the largest bank headquartered in the South San Joaquin Valley. The Bank’s deposit accounts, which totaled $2.2 billion at March 31, 2019, are insured by the Federal Deposit Insurance Corporation (“FDIC”) up to maximum insurable amounts.

Basis of Presentation

Basis of Presentation	3 Months Ended
	Mar. 31, 2019
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 2018 have been reclassified to be consistent with the reporting for 2019. 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, 2018, as filed with the Securities and Exchange Commission (the “SEC”).

Current Accounting Developments

Current Accounting Developments	3 Months Ended
	Mar. 31, 2019
New Accounting Pronouncements And Changes In Accounting Principles [Abstract]
Current Accounting Developments	Note 3 – Current Accounting Developments In February 2016 the FASB issued ASU 2016-02, Leases (Topic 842) 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 August 2018 the FASB issued ASU 2018-13, Fair Value Measurement (Topic 820): Disclosure Framework – Changes to the Disclosure Requirements for Fair Value Measurement,

Supplemental Disclosure of Cash

Supplemental Disclosure of Cash and Non-Cash Flow Information	3 Months Ended
	Mar. 31, 2019
Supplemental Cash Flow Information [Abstract]
Supplemental Disclosure of Cash and Non-Cash Flow Information	Note 4 – Supplemental Disclosure of Cash and Non-Cash Flow Information During the three months ended March 31, 2019 and 2018, cash paid for interest due on interest-bearing liabilities was $3.409 million and $1.874 million, respectively. There was no cash paid for income taxes during the three months ended March 31, 2019 or March 31, 2018. There were assets totaling $26,000 that were acquired in settlement of loans for the three months ended March 31, 2019, but none during the three months ended March 31, 2018. Non-cash items which arose from the recording of an operating right-of-use asset and lease liability, pursuant to the adoption of ASU 2016-02, were $9.7 million and $10.3 million respectively during the first quarter of 2019.

Share Based Compensation

Share Based Compensation	3 Months Ended
	Mar. 31, 2019
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 341,450 shares that were granted under the 2007 Plan were still outstanding as of March 31, 2019 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 was initially 850,000 shares, and the number remaining available for grant as of March 31, 2019 was 690,800. The potential dilutive impact of unexercised stock options is discussed below in Note 6, Earnings per Share. Pursuant to FASB’s standards on stock compensation, the value of each stock option is reflected in our income statement as employee compensation or directors’ expense by amortizing its grant date fair value over the vesting period of the option. The Company utilizes a Black-Scholes model to determine grant date fair values. A pre-tax charge of $151,000 was reflected in the Company’s income statement during the first quarter of 2019 and $76,000 was charged during the first quarter of 2018, as expense related to stock options.

Earnings per Share

Earnings per Share	3 Months Ended
	Mar. 31, 2019
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 15,311,154 weighted average shares outstanding during the first quarter of 2019, and 15,232,696 during the first quarter of 2018. Diluted earnings per share calculations 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 first quarter of 2019, calculations under the treasury stock method resulted in the equivalent of 136,593 shares being added to basic weighted average shares outstanding for purposes of determining diluted earnings per share, while a weighted average of 199,120 stock options were excluded from the calculation because they were underwater and thus anti-dilutive. For the first quarter of 2018 the equivalent of 179,472 shares were added in calculating diluted earnings per share, while 169,000 anti-dilutive stock options were not factored into the computation.

Comprehensive Income

Comprehensive Income	3 Months Ended
	Mar. 31, 2019
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. Investment gains or losses 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	3 Months Ended
	Mar. 31, 2019
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): March 31, 2019 December 31, 2018 Commitments to extend credit $ 715,163 $ 781,987 Standby letters of credit $ 9,580 $ 8,966 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 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 March 31, 2019, the Company was also utilizing a letter of credit in the amount of $95 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	3 Months Ended
	Mar. 31, 2019
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 public business entities to disclose in their financial statement footnotes the estimated fair values of financial instruments. In addition to disclosure requirements, FASB’s standard on investments requires that our debt securities that are classified as available for sale and any equity securities which 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. Fair value disclosures for deposits include demand deposits, which are by definition equal to the amount payable on demand at the reporting date. Fair value calculations for loans and leases reflect exit pricing, and incorporate our assumptions with regard to the impact of prepayments on future cash flows and credit quality adjustments based on risk characteristics of various financial instruments, among other things. Since the estimates are subjective and involve uncertainties and matters of significant judgment they cannot be determined with precision, and changes in assumptions could significantly alter the fair values presented. 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) March 31, 2019 Fair Value Measurements 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 $ 68,063 $ 68,063 $ — $ — $ 68,063 Investment securities available for sale 563,628 — 563,628 — 563,628 Loans and leases, net held for investment 1,744,299 — 1,730,151 — 1,730,151 Collateral dependent impaired loans 39 — 39 — 39 Financial liabilities: Deposits 2,160,748 658,524 1,501,824 — 2,160,348 Repurchase agreements 19,360 19,360 — — 19,360 Short term borrowings — — — — — Subordinated debentures 34,811 — 30,355 — 30,355 December 31, 2018 Fair Value Measurements 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 $ 74,132 $ 74,132 $ — $ — $ 74,132 Investment securities available for sale 560,479 — 560,479 — 560,479 Loans and leases, net held for investment 1,724,575 — 1,707,463 — 1,707,463 Collateral dependent impaired loans 205 — 205 — 205 Financial liabilities: Deposits 2,116,340 662,527 1,453,048 — 2,115,575 Repurchase agreements 16,359 16,359 — — 16,359 Short term borrowings 56,100 — 56,100 — 56,100 Subordinated debentures 34,767 — 30,311 — 30,311 For financial asset categories that were carried on our balance sheet at fair value as of March 31, 2019 and December 31, 2018, 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 March 31, 2019, 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: U.S. government agencies $ — $ 15,447 $ — $ 15,447 $ — Mortgage-backed securities — 402,469 — 402,469 — State and political subdivisions — 145,712 — 145,712 — Total available-for-sale securities $ — $ 563,628 $ — $ 563,628 $ — Fair Value Measurements at December 31, 2018, 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: U.S. government agencies $ — $ 15,212 $ — $ 15,212 $ — Mortgage-backed securities — 404,733 — 404,733 — State and political subdivisions — 140,534 — 140,534 — Total available-for-sale securities $ — $ 560,479 $ — $ 560,479 $ — Assets reported at fair value on a nonrecurring basis are summarized below: Fair Value Measurements - Nonrecurring (dollars in thousands, unaudited) Fair Value Measurements at March 31, 2019, 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 — 27 — 27 1-4 family - closed-end — — — — Equity lines — — — — Multi-family residential — — — — Commercial real estate - owner occupied — — — — Commercial real estate - non-owner occupied — — — — Farmland — — — — Total real estate — 27 — 27 Agricultural — — — — Commercial and industrial — — — — Consumer loans — 12 — 12 Total impaired loans $ — $ 39 $ — $ 39 Foreclosed assets $ — $ 806 $ — $ 806 Total assets measured on a nonrecurring basis $ — $ 845 $ — $ 845 Fair Value Measurements at December 31, 2018, 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 — 27 — 27 1-4 family - closed-end — — — — Equity lines — 12 — 12 Multi-family residential — — — — Commercial real estate - owner occupied — — — — Commercial real estate - non-owner occupied — — — — Farmland — — — — Total real estate — 39 — 39 Agricultural — — — — Commercial and industrial — 119 — 119 Consumer loans — 47 — 47 Total impaired loans $ — $ 205 $ — $ 205 Foreclosed assets $ — $ 1,082 $ — $ 1,082 Total assets measured on a nonrecurring basis $ — $ 1,287 $ — $ 1,287 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 Operations 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	3 Months Ended
	Mar. 31, 2019
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 available-for-sale investment securities are as follows: Amortized Cost And Estimated Fair Value (dollars in thousands, unaudited) March 31, 2019 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Estimated Fair Value U.S. government agencies $ 15,623 $ 44 $ (220 ) $ 15,447 Mortgage-backed securities 407,824 994 (6,349 ) 402,469 State and political subdivisions 143,483 2,516 (287 ) 145,712 Total securities $ 566,930 $ 3,554 $ (6,856 ) $ 563,628 December 31, 2018 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Estimated Fair Value U.S. government agencies $ 15,553 $ 12 $ (353 ) $ 15,212 Mortgage-backed securities 414,208 398 (9,873 ) 404,733 State and political subdivisions 140,181 1,206 (853 ) 140,534 Total securities $ 569,942 $ 1,616 $ (11,079 ) $ 560,479 At March 31, 2019 and December 31, 2018, the Company had 415 securities and 552 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) March 31, 2019 Less than twelve months Twelve months or more Gross Unrealized Losses Fair Value Gross Unrealized Losses Fair Value U.S. government agencies $ (9 ) $ 470 $ (211 ) $ 11,004 Mortgage-backed securities (91 ) 20,340 (6,258 ) 286,791 State and political subdivisions (2 ) 501 (285 ) 19,682 Total $ (102 ) $ 21,311 $ (6,754 ) $ 317,477 December 31, 2018 Less than twelve months Twelve months or more Gross Unrealized Losses Fair Value Gross Unrealized Losses Fair Value U.S. government agencies $ (54 ) $ 2,815 $ (299 ) $ 10,764 Mortgage-backed securities (717 ) 69,686 (9,156 ) 273,230 State and political subdivisions (249 ) 33,864 (604 ) 22,213 Total $ (1,020 ) $ 106,365 $ (10,059 ) $ 306,207 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 March 31, 2019 2018 Proceeds from sales, calls and maturities of securities available for sale $ 16,648 $ 200 Gross gains on sales, calls and maturities of securities available for sale 94 — Gross losses on sales, calls and maturities of securities available for sale (88 ) — Net gains on sale of securities available for sale $ 6 $ — The amortized cost and estimated fair value of investment securities available-for-sale at March 31, 2019 and December 31, 2018 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) March 31, 2019 Amortized Cost Fair Value Maturing within one year $ 7,057 $ 7,103 Maturing after one year through five years 183,343 180,783 Maturing after five years through ten years 56,211 56,502 Maturing after ten years 87,011 88,317 Securities not due at a single maturity date: U.S. government agencies collateralized by mortgage obligations 233,308 230,923 $ 566,930 $ 563,628 December 31, 2018 Amortized Cost Fair Value Maturing within one year $ 7,726 $ 7,789 Maturing after one year through five years 199,840 195,519 Maturing after five years through ten years 47,802 47,661 Maturing after ten years 83,606 83,444 Securities not due at a single maturity date: U.S. government agencies collateralized by mortgage obligations 230,968 226,066 $ 569,942 $ 560,479 At March 31, 2019, the Company’s investment portfolio included 325 “muni” bonds issued by 259 different government municipalities and agencies located within 29 different states, with an aggregate fair value of $146 million. The largest exposure to any single municipality or agency was a combined $2.570 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) March 31, 2019 December 31, 2018 Amortized Fair Market Amortized Fair Market General obligation bonds Cost Value Cost Value State of issuance Texas $ 38,428 $ 38,882 $ 36,331 $ 36,199 California 26,741 27,465 26,928 27,357 Washington 16,003 16,306 16,036 16,062 Ohio 8,903 8,944 8,639 8,601 Illinois 7,391 7,510 6,827 6,838 Other (20 and 22 states, respectively) 22,540 22,854 21,530 21,576 Total general obligation bonds 120,006 121,961 116,291 116,633 Revenue bonds State of issuance Texas 7,507 7,572 7,526 7,506 Utah 5,356 5,389 5,364 5,353 Indiana 2,635 2,692 2,641 2,654 Washington 1,748 1,811 1,751 1,780 Virginia 1,335 1,322 1,341 1,315 Other (10 and 11 states, respectively) 4,896 4,965 5,267 5,293 Total revenue bonds 23,477 23,751 23,890 23,901 Total obligations of states and political subdivisions $ 143,483 $ 145,712 $ 140,181 $ 140,534 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) March 31, 2019 December 31, 2018 Amortized Fair Market Amortized Fair Market Revenue bonds Cost Value Cost Value Revenue source: Water $ 7,635 $ 7,679 $ 6,942 $ 6,946 Sales Tax 4,888 4,992 2,932 2,901 Lease 1,839 1,838 2,053 2,068 College & University 1,669 1,695 2,583 2,604 Sewer 1,429 1,447 1,392 1,398 Other (13 sources) 6,017 6,100 7,988 7,984 Total revenue bonds $ 23,477 $ 23,751 $ 23,890 $ 23,901 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 primary investment return comes from tax credits that flow through to investors. 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 made investment commitments to 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 March 31, 2019 our total LIHTC investment book balance was $5.5 million, which includes $1.9 million in remaining commitments for additional capital contributions. There were $133,000 in tax credits derived from our LIHTC investments that were recognized during the three months ended March 31, 2019, and amortization expense of $450,000 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	3 Months Ended
	Mar. 31, 2019
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) March 31, 2019 Pass Special Mention Substandard Impaired Total Real estate: 1-4 family residential construction $ 106,334 $ — $ — $ — $ 106,334 Other construction/land 108,162 193 — 475 108,830 1-4 family - closed end 226,307 1,781 934 3,618 232,640 Equity lines 44,613 2,038 308 4,684 51,643 Multi-family residential 54,708 — — 367 55,075 Commercial real estate - owner occupied 311,531 5,392 2,985 1,208 321,116 Commercial real estate - non-owner occupied 433,866 3,565 4,316 1,355 443,102 Farmland 152,254 1,072 143 1,641 155,110 Total real estate 1,437,775 14,041 8,686 13,348 1,473,850 Agricultural 51,905 175 — 6 52,086 Commercial and industrial 109,255 14,988 337 1,099 125,679 Mortgage warehouse 91,118 — — — 91,118 Consumer loans 7,289 154 24 789 8,256 Total gross loans and leases $ 1,697,342 $ 29,358 $ 9,047 $ 15,242 $ 1,750,989 December 31, 2018 Pass Special Mention Substandard Impaired Total Real estate: 1-4 family residential construction $ 105,676 $ — $ — $ — $ 105,676 Other construction/land 108,304 231 — 488 109,023 1-4 family - closed end 230,022 1,861 1,310 3,632 236,825 Equity lines 49,346 2,194 64 4,716 56,320 Multi-family residential 54,504 — — 373 54,877 Commercial real estate - owner occupied 292,886 4,192 3,021 1,225 301,324 Commercial real estate - non-owner occupied 429,835 2,730 4,354 1,425 438,344 Farmland 148,680 1,073 146 1,642 151,541 Total real estate 1,419,253 12,281 8,895 13,501 1,453,930 Agricultural 48,517 580 — 6 49,103 Commercial and industrial 110,413 15,686 377 1,744 128,220 Mortgage warehouse 91,813 — — — 91,813 Consumer loans 7,851 151 39 821 8,862 Total gross loans and leases $ 1,677,847 $ 28,698 $ 9,311 $ 16,072 $ 1,731,928 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 $806,000 at March 31, 2019, and $1.082 million at December 31, 2018. Gross nonperforming loans totaled $4.568 million at March 31, 2019 and $5.156 million at December 31, 2018. Loans and leases are classified as nonperforming 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) March 31, 2019 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 $ 1,650 $ — $ — $ 1,650 $ 104,684 $ 106,334 $ — Other construction/land — — 28 28 108,802 108,830 75 1-4 family - closed end 761 — 730 1,491 231,149 232,640 822 Equity lines 67 268 56 391 51,252 51,643 488 Multi-family residential — — — — 55,075 55,075 — Commercial real estate - owner occupied 1,340 — 100 1,440 319,676 321,116 594 Commercial real estate - non-owner occupied 314 — — 314 442,788 443,102 — Farmland — — 1,615 1,615 153,495 155,110 1,642 Total real estate 4,132 268 2,529 6,929 1,466,921 1,473,850 3,621 Agricultural — — — — 52,086 52,086 — Commercial and industrial 26 — 356 382 125,297 125,679 811 Mortgage warehouse lines — — — — 91,118 91,118 — Consumer 98 17 62 177 8,079 8,256 136 Total gross loans and leases $ 4,256 $ 285 $ 2,947 $ 7,488 $ 1,743,501 $ 1,750,989 $ 4,568 (1) As of March 31, 2018 there were no loans over 90 days past due and still accruing. (2) Included in total financing receivables December 31, 2018 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 $ — $ — $ — $ — $ 105,676 $ 105,676 $ — Other construction/land 210 — 27 237 108,786 109,023 82 1-4 family - closed end 319 — 775 1,094 235,731 236,825 799 Equity lines 1,471 — 57 1,528 54,792 56,320 408 Multi-family residential — — — — 54,877 54,877 — Commercial real estate - owner occupied 183 — 102 285 301,039 301,324 605 Commercial real estate - non-owner occupied 49 — — 49 438,295 438,344 49 Farmland 1,555 — — 1,555 149,986 151,541 1,642 Total real estate 3,787 — 961 4,748 1,449,182 1,453,930 3,585 Agricultural — — — — 49,103 49,103 — Commercial and industrial 1,567 83 886 2,536 125,684 128,220 1,425 Mortgage warehouse lines — — — — 91,813 91,813 — Consumer 95 45 56 196 8,666 8,862 146 Total gross loans and leases $ 5,449 $ 128 $ 1,903 $ 7,480 $ 1,724,448 $ 1,731,928 $ 5,156 (1) As of December 31, 2018 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 March 31, 2019, the Company had a total of $11.840 million in TDRs, including $1.090 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 March 31, 2019 Rate Modification Term Modification Interest Only Modification Rate & Term Modification Total Real estate: Other construction/land $ — $ — $ — $ — $ — 1-4 family - closed-end — — — — — Equity lines — 100 — — 100 Multi-family residential — — — — — Commercial real estate - owner occupied — — — — — Farmland — — — — — Total real estate loans — 100 — — 100 Agricultural — — — — — Commercial and industrial 94 — — — 94 Consumer loans — 9 — — 9 Total $ 94 $ 109 $ — $ — $ 203 Three months ended March 31, 2018 Rate Modification Term Modification Interest Only Modification Rate & Term Modification Total Real estate: Other construction/land $ — $ — $ — $ — $ — 1-4 family - closed-end — — — — — Equity lines — 68 — — 68 Multi-family residential — — — — — Commercial real estate - owner occupied — — — — — Farmland — — — — — Total real estate loans — 68 — — 68 Agricultural — — — — Commercial and industrial — — — — — Consumer loans — — — — — Total $ — $ 68 $ — $ — $ 68 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 March 31, 2019 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 0 — — — — Equity lines 1 100 100 — — Multi-family residential 0 — — — — Commercial real estate - owner occupied 0 — — — — Farmland 0 — — — — Total real estate loans 100 100 — — Agricultural 0 — — — — Commercial and industrial 2 94 94 (20 ) 1 Consumer loans 1 9 9 (2 ) — Total $ 203 $ 203 $ (22 ) $ 1 (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 March 31, 2018 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 0 — — — — Equity lines 1 68 68 — 2 Multi-family residential 0 — — — — Commercial real estate - owner occupied 0 — — — — Farmland 0 — — — — Total real estate loans 68 68 — 2 Agricultural 0 — — — — Commercial and industrial 0 — — — — Consumer loans 0 — — — — Total $ 68 $ 68 $ — $ 2 (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-month periods ended March 31, 2019 and 2018. 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 any such loans 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 acquisition of Santa Clara Valley Bank in 2014 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) March 31, 2019 Unpaid Principal Balance Carrying Value Real estate secured $ 100 — Total purchased credit impaired loans $ 100 $ — December 31, 2018 Unpaid Principal Balance Carrying Value Real estate secured $ 103 $ — Total purchased credit impaired loans $ 103 $ — An allowance for loan losses totaling $100,000 was allocated for PCI loans as of March 31, 2019, as compared to $103,000 at December 31, 2018. There was no discount accretion recorded on PCI loans during the three months ended March 31, 2019.

Allowance for Loan and Lease Lo

Allowance for Loan and Lease Losses	3 Months Ended
	Mar. 31, 2019
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 $1.021 million at March 31, 2019 and $1.048 million at December 31, 2018. Impaired Loans (dollars in thousands, unaudited) March 31, 2019 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 $ 582 $ 427 $ 41 $ 686 $ 10 1-4 family - closed-end 3,279 3,279 73 3,382 43 Equity lines 4,585 4,533 651 4,722 63 Multi-family residential 367 367 22 381 6 Commercial real estate- owner occupied 834 714 125 792 10 Commercial real estate- non-owner occupied 1,502 1,355 3 1,597 26 Total real estate 11,149 10,675 915 11,560 158 Agricultural 6 6 1 6 — Commercial and industrial 970 951 333 1,044 6 Consumer loans 812 774 180 947 13 Subtotal 12,937 12,406 1,429 13,557 177 With no related allowance recorded Real estate: Other construction/land 53 48 — 60 — 1-4 family - closed-end 385 339 — 430 — Equity lines 177 151 — 194 — Commercial real estate- owner occupied 494 494 — 511 — Commercial real estate- non-owner occupied — — — — — Farmland 1,642 1,641 — 1,660 — Total real estate 2,751 2,673 — 2,855 — Agricultural — — — — — Commercial and industrial 169 148 — 298 — Consumer loans 129 15 — 222 — Subtotal 3,049 2,836 — 3,375 — Total $ 15,986 $ 15,242 $ 1,429 $ 16,932 $ 177 (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, 2018 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 $ 593 $ 438 $ 44 $ 648 $ 40 1-4 family - closed-end 3,325 3,325 75 3,182 175 Equity lines 4,603 4,550 656 4,368 206 Multi-family residential 373 373 25 359 20 Commercial real estate- owner occupied 842 723 135 740 40 Commercial real estate- non-owner occupied 1,572 1,425 3 1,644 107 Total real estate 11,308 10,834 938 10,941 588 Agricultural 6 6 1 6 — Commercial and industrial 1,724 1,534 918 1,965 40 Consumer loans 813 764 151 909 61 Subtotal 13,851 13,138 2,008 13,821 689 With no related allowance recorded Real estate: Other construction/land 54 50 — 58 — 1-4 family - closed-end 357 307 — 375 3 Equity lines 224 166 — 221 — Commercial real estate- owner occupied 502 502 — 478 — Commercial real estate- non-owner occupied — — — — — Farmland 1,642 1,642 — 1,538 — Total real estate 2,779 2,667 — 2,670 3 Agricultural — — — — — Commercial and industrial 238 211 — 838 — Consumer loans 182 56 — 273 1 Subtotal 3,199 2,934 — 3,781 4 Total $ 17,050 $ 16,072 $ 2,008 $ 17,602 $ 693 (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 by the Company to determine a specific loss allowance if those rates 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, 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, and current appraisals were available or in process for 97% of the Company’s impaired real estate loan balances at March 31, 2019. 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 $8.009 million at March 31, 2019. There were no material changes to the methodology used to determine our allowance for loan and lease losses during the three months ended March 31, 2019. As we add new products and expand our geographic coverage, and as regulatory and economic environments change, 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 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 March 31, 2019 Real Estate Agricultural Products Commercial and Industrial Consumer Unallocated Total Allowance for credit losses: Beginning balance $ 5,831 $ 256 $ 2,394 $ 1,239 $ 30 $ 9,750 Charge-offs — — (579 ) (551 ) — (1,130 ) Recoveries 175 — 41 302 — 518 Provision 88 (37 ) 58 139 52 300 Ending balance $ 6,094 $ 219 $ 1,914 $ 1,129 $ 82 $ 9,438 Reserves: Specific $ 915 $ 1 $ 333 $ 180 $ — $ 1,429 General 5,179 218 1,581 949 82 8,009 Ending balance $ 6,094 $ 219 $ 1,914 $ 1,129 $ 82 $ 9,438 Loans evaluated for impairment: Individually $ 13,348 $ 6 $ 1,099 $ 789 $ — $ 15,242 Collectively 1,460,502 52,080 215,698 7,467 — 1,735,747 Ending balance $ 1,473,850 $ 52,086 $ 216,797 $ 8,256 $ — $ 1,750,989 Year ended December 31, 2018 Real Estate Agricultural Products Commercial and Industrial Consumer Unallocated Total Allowance for credit losses: Beginning balance $ 4,786 $ 208 $ 2,772 $ 1,231 $ 46 $ 9,043 Charge-offs (2,474 ) — (608 ) (2,226 ) — (5,308 ) Recoveries 374 23 148 1,120 — 1,665 Provision 3,145 25 82 1,114 (16 ) 4,350 Ending balance $ 5,831 $ 256 $ 2,394 $ 1,239 $ 30 $ 9,750 Reserves: Specific $ 937 $ 2 $ 918 $ 151 $ — $ 2,008 General 4,894 254 1,476 1,088 30 7,742 Ending balance $ 5,831 $ 256 $ 2,394 $ 1,239 $ 30 $ 9,750 Loans evaluated for impairment: Individually $ 13,501 $ 6 $ 1,744 $ 821 $ — $ 16,072 Collectively 1,440,429 49,097 218,289 8,041 — 1,715,856 Ending balance $ 1,453,930 $ 49,103 $ 220,033 $ 8,862 $ — $ 1,731,928

Operating Leases

Operating Leases	3 Months Ended
	Mar. 31, 2019
Leases [Abstract]
Operating Leases	Note 13 – Operating Leases. We lease space under non-cancelable operating leases for 21 branch locations, three off-site ATM locations, one administration office and one warehouse. Many of our leases include both lease (e.g., fixed payments including rent, taxes, and insurance costs) and non-lease components (e.g., common-area or other maintenance costs). Payments for taxes and insurance as well as non-lease components are not included in the accounting of the lease component. These costs are separately accounted for in occupancy expense. Most leases include one or more options to renew. The exercise of lease renewal options is typically at our sole discretion; therefore, the majority of renewals to extend the lease terms are not included in our right-of-use assets and lease liabilities as they are not reasonably certain of exercise. We regularly evaluate the renewal options and when they are reasonably certain of exercise, we include the renewal period in our lease term. As most of our leases do not provide an implicit rate, we used our incremental borrowing rate in determining the present value of the lease payments. The cost components of our operating leases were as follows for the period ended March 31, 2019 (dollars in thousands, unaudited): March 31, 2019 Lease expense Operating lease cost (cost resulting from lease payments) $ 540 Total lease cost $ 540 Rent expense for the three months ended March 31, 2018, prior to the adoption of ASU 2016-02, was $557 thousand. There were no sale and leaseback transactions, leveraged leases, or lease transactions with related parties during the three months ended March 31, 2019. The supplemental cash flow information and weighted average remaining lease terms and discount rates for all of our operating leases were as follows (dollars in thousands, unaudited): March 31, 2019 Other information Cash paid for amounts included in the measurement of lease liabilities for operating leases: Operating cash flows (for the three month period ended March 31, 2019) $ 270 Right-of-use assets obtained in exchange for new operating lease liabilities (1) $ 9,446 Weighted-average remaining lease term (in years): Operating leases 5.5 Weighted-average discount rate: Operating leases 5.5 % (1) Right-of-use assets are included in other assets. Maturities of our lease liabilities for all operating leases are as follows (dollars in thousands, unaudited): Maturities of Lease Liabilities Nine months ended December 31, 2019 $ 1,643 Year ended December 31, 2020 2,204 Year ended December 31, 2021 1,993 Year ended December 31, 2022 1,558 Year ended December 31, 2023 1,119 Thereafter 3,939 Total 12,456 Less: present value discount (2,390 ) Lease liability (1) $ 10,066 (1) Lease liability is included in other liabilities. The following table presents the future minimum rental payments under leases with terms in excess of one year as of December 31, 2018 presented in accordance with ASC Topic 840, “Leases”: December 31, 2018 2019 $ 2,190 2020 2,204 2021 1,993 2022 1,558 2023 1,119 Thereafter 3,939 Total $ 13,003

Revenue Recognition

Revenue Recognition	3 Months Ended
	Mar. 31, 2019
Revenue From Contract With Customer [Abstract]
Revenue Recognition	Note 14 – Revenue Recognition. The Company utilizes the guidance found in ASU 2014-09, Revenue from Contracts with Customers (ASC 606), when accounting for certain non-interest income. The core principle of this guidance is that an entity should recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. Sufficient information should be provided to enable users of financial statements to understand the nature, amount, timing and uncertainty of revenue and cash flows arising from contracts with customers. The Company’s revenue streams that are within the scope of and accounted for under Topic 606 include service charges on deposit accounts, debit card interchange fees, and fees levied for other services the Company provides its customers. The guidance does not apply to revenue associated with financial instruments such as loans and investments, and other non-interest income such as loan servicing fees and earnings on bank-owned life insurance, which are accounted for on an accrual basis under other provisions of GAAP. In total, approximately 24.6% of the Company’s revenue was outside of the scope of the ASC 606 as of March 31, 2019. All of the company’s revenue from contracts in the scope of ASC 606 is recognized within noninterest income. The following table presents the Company’s sources of noninterest income for the three months ended March 31, 2019 and 2018. Items outside the scope of ASC 606 are noted as such (dollars in thousands, unaudited). For the three months ended March 31, 2019 2018 Non-interest income Service charges on deposits Returned item and overdraft fees $ 1,567 $ 1,567 Other service charges on deposits 1,376 1,379 Debit card interchange income 1,512 1,399 Loss on limited partnerships (1) (450 ) (405 ) Dividends on equity investments (1) 231 225 Net gains on sale of securities (1) 6 — Other (1) 1,664 968 Total non-interest income $ 5,906 $ 5,133 (1) Not within scope of ASC 606. Revenue streams are not related to contract with customers and are accounted for on an accrual basis under other provisions of GAAP. With regard to non-interest income associated with customer contracts, the Company has determined that transaction prices are fixed and performance obligations are satisfied as services are rendered, thus there is little or no judgment involved in the timing of revenue recognition under contracts that are within the scope of ASC 606.

Financial Instruments with Of_2

Financial Instruments with Off-Balance-Sheet Risk (Tables)	3 Months Ended
	Mar. 31, 2019
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): March 31, 2019 December 31, 2018 Commitments to extend credit $ 715,163 $ 781,987 Standby letters of credit $ 9,580 $ 8,966

Fair Value Disclosures and Re_2

Fair Value Disclosures and Reporting, the Fair Value Option and Fair Value Measurements (Tables)	3 Months Ended
	Mar. 31, 2019
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) March 31, 2019 Fair Value Measurements 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 $ 68,063 $ 68,063 $ — $ — $ 68,063 Investment securities available for sale 563,628 — 563,628 — 563,628 Loans and leases, net held for investment 1,744,299 — 1,730,151 — 1,730,151 Collateral dependent impaired loans 39 — 39 — 39 Financial liabilities: Deposits 2,160,748 658,524 1,501,824 — 2,160,348 Repurchase agreements 19,360 19,360 — — 19,360 Short term borrowings — — — — — Subordinated debentures 34,811 — 30,355 — 30,355 December 31, 2018 Fair Value Measurements 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 $ 74,132 $ 74,132 $ — $ — $ 74,132 Investment securities available for sale 560,479 — 560,479 — 560,479 Loans and leases, net held for investment 1,724,575 — 1,707,463 — 1,707,463 Collateral dependent impaired loans 205 — 205 — 205 Financial liabilities: Deposits 2,116,340 662,527 1,453,048 — 2,115,575 Repurchase agreements 16,359 16,359 — — 16,359 Short term borrowings 56,100 — 56,100 — 56,100 Subordinated debentures 34,767 — 30,311 — 30,311
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 March 31, 2019, 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: U.S. government agencies $ — $ 15,447 $ — $ 15,447 $ — Mortgage-backed securities — 402,469 — 402,469 — State and political subdivisions — 145,712 — 145,712 — Total available-for-sale securities $ — $ 563,628 $ — $ 563,628 $ — Fair Value Measurements at December 31, 2018, 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: U.S. government agencies $ — $ 15,212 $ — $ 15,212 $ — Mortgage-backed securities — 404,733 — 404,733 — State and political subdivisions — 140,534 — 140,534 — Total available-for-sale securities $ — $ 560,479 $ — $ 560,479 $ —
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 March 31, 2019, 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 — 27 — 27 1-4 family - closed-end — — — — Equity lines — — — — Multi-family residential — — — — Commercial real estate - owner occupied — — — — Commercial real estate - non-owner occupied — — — — Farmland — — — — Total real estate — 27 — 27 Agricultural — — — — Commercial and industrial — — — — Consumer loans — 12 — 12 Total impaired loans $ — $ 39 $ — $ 39 Foreclosed assets $ — $ 806 $ — $ 806 Total assets measured on a nonrecurring basis $ — $ 845 $ — $ 845 Fair Value Measurements at December 31, 2018, 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 — 27 — 27 1-4 family - closed-end — — — — Equity lines — 12 — 12 Multi-family residential — — — — Commercial real estate - owner occupied — — — — Commercial real estate - non-owner occupied — — — — Farmland — — — — Total real estate — 39 — 39 Agricultural — — — — Commercial and industrial — 119 — 119 Consumer loans — 47 — 47 Total impaired loans $ — $ 205 $ — $ 205 Foreclosed assets $ — $ 1,082 $ — $ 1,082 Total assets measured on a nonrecurring basis $ — $ 1,287 $ — $ 1,287

Investments (Tables)

Investments (Tables)	3 Months Ended
	Mar. 31, 2019
Investments Debt And Equity Securities [Abstract]
Amortized Cost and Estimated Fair Value of Available-For-Sale Investment Securities	The amortized cost and estimated fair value of available-for-sale investment securities are as follows: Amortized Cost And Estimated Fair Value (dollars in thousands, unaudited) March 31, 2019 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Estimated Fair Value U.S. government agencies $ 15,623 $ 44 $ (220 ) $ 15,447 Mortgage-backed securities 407,824 994 (6,349 ) 402,469 State and political subdivisions 143,483 2,516 (287 ) 145,712 Total securities $ 566,930 $ 3,554 $ (6,856 ) $ 563,628 December 31, 2018 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Estimated Fair Value U.S. government agencies $ 15,553 $ 12 $ (353 ) $ 15,212 Mortgage-backed securities 414,208 398 (9,873 ) 404,733 State and political subdivisions 140,181 1,206 (853 ) 140,534 Total securities $ 569,942 $ 1,616 $ (11,079 ) $ 560,479
Information Pertaining to Investment Securities Aggregated by Investment Category and Length of Time that Individual Securities in a Continuous Loss Position	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) March 31, 2019 Less than twelve months Twelve months or more Gross Unrealized Losses Fair Value Gross Unrealized Losses Fair Value U.S. government agencies $ (9 ) $ 470 $ (211 ) $ 11,004 Mortgage-backed securities (91 ) 20,340 (6,258 ) 286,791 State and political subdivisions (2 ) 501 (285 ) 19,682 Total $ (102 ) $ 21,311 $ (6,754 ) $ 317,477 December 31, 2018 Less than twelve months Twelve months or more Gross Unrealized Losses Fair Value Gross Unrealized Losses Fair Value U.S. government agencies $ (54 ) $ 2,815 $ (299 ) $ 10,764 Mortgage-backed securities (717 ) 69,686 (9,156 ) 273,230 State and political subdivisions (249 ) 33,864 (604 ) 22,213 Total $ (1,020 ) $ 106,365 $ (10,059 ) $ 306,207
Realized Gain (Loss) on Investments	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 March 31, 2019 2018 Proceeds from sales, calls and maturities of securities available for sale $ 16,648 $ 200 Gross gains on sales, calls and maturities of securities available for sale 94 — Gross losses on sales, calls and maturities of securities available for sale (88 ) — Net gains on sale of securities available for sale $ 6 $ —
Investments Classified by Contractual Maturity Date	The amortized cost and estimated fair value of investment securities available-for-sale at March 31, 2019 and December 31, 2018 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) March 31, 2019 Amortized Cost Fair Value Maturing within one year $ 7,057 $ 7,103 Maturing after one year through five years 183,343 180,783 Maturing after five years through ten years 56,211 56,502 Maturing after ten years 87,011 88,317 Securities not due at a single maturity date: U.S. government agencies collateralized by mortgage obligations 233,308 230,923 $ 566,930 $ 563,628 December 31, 2018 Amortized Cost Fair Value Maturing within one year $ 7,726 $ 7,789 Maturing after one year through five years 199,840 195,519 Maturing after five years through ten years 47,802 47,661 Maturing after ten years 83,606 83,444 Securities not due at a single maturity date: U.S. government agencies collateralized by mortgage obligations 230,968 226,066 $ 569,942 $ 560,479
Summary of Amortized Cost and Fair Values of General Obligation and Revenue Bonds	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) March 31, 2019 December 31, 2018 Amortized Fair Market Amortized Fair Market General obligation bonds Cost Value Cost Value State of issuance Texas $ 38,428 $ 38,882 $ 36,331 $ 36,199 California 26,741 27,465 26,928 27,357 Washington 16,003 16,306 16,036 16,062 Ohio 8,903 8,944 8,639 8,601 Illinois 7,391 7,510 6,827 6,838 Other (20 and 22 states, respectively) 22,540 22,854 21,530 21,576 Total general obligation bonds 120,006 121,961 116,291 116,633 Revenue bonds State of issuance Texas 7,507 7,572 7,526 7,506 Utah 5,356 5,389 5,364 5,353 Indiana 2,635 2,692 2,641 2,654 Washington 1,748 1,811 1,751 1,780 Virginia 1,335 1,322 1,341 1,315 Other (10 and 11 states, respectively) 4,896 4,965 5,267 5,293 Total revenue bonds 23,477 23,751 23,890 23,901 Total obligations of states and political subdivisions $ 143,483 $ 145,712 $ 140,181 $ 140,534 Revenue Bonds by Type (dollars in thousands, unaudited) March 31, 2019 December 31, 2018 Amortized Fair Market Amortized Fair Market Revenue bonds Cost Value Cost Value Revenue source: Water $ 7,635 $ 7,679 $ 6,942 $ 6,946 Sales Tax 4,888 4,992 2,932 2,901 Lease 1,839 1,838 2,053 2,068 College & University 1,669 1,695 2,583 2,604 Sewer 1,429 1,447 1,392 1,398 Other (13 sources) 6,017 6,100 7,988 7,984 Total revenue bonds $ 23,477 $ 23,751 $ 23,890 $ 23,901

Credit Quality and Nonperform_2

Credit Quality and Nonperforming Assets (Tables)	3 Months Ended
	Mar. 31, 2019
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) March 31, 2019 Pass Special Mention Substandard Impaired Total Real estate: 1-4 family residential construction $ 106,334 $ — $ — $ — $ 106,334 Other construction/land 108,162 193 — 475 108,830 1-4 family - closed end 226,307 1,781 934 3,618 232,640 Equity lines 44,613 2,038 308 4,684 51,643 Multi-family residential 54,708 — — 367 55,075 Commercial real estate - owner occupied 311,531 5,392 2,985 1,208 321,116 Commercial real estate - non-owner occupied 433,866 3,565 4,316 1,355 443,102 Farmland 152,254 1,072 143 1,641 155,110 Total real estate 1,437,775 14,041 8,686 13,348 1,473,850 Agricultural 51,905 175 — 6 52,086 Commercial and industrial 109,255 14,988 337 1,099 125,679 Mortgage warehouse 91,118 — — — 91,118 Consumer loans 7,289 154 24 789 8,256 Total gross loans and leases $ 1,697,342 $ 29,358 $ 9,047 $ 15,242 $ 1,750,989 December 31, 2018 Pass Special Mention Substandard Impaired Total Real estate: 1-4 family residential construction $ 105,676 $ — $ — $ — $ 105,676 Other construction/land 108,304 231 — 488 109,023 1-4 family - closed end 230,022 1,861 1,310 3,632 236,825 Equity lines 49,346 2,194 64 4,716 56,320 Multi-family residential 54,504 — — 373 54,877 Commercial real estate - owner occupied 292,886 4,192 3,021 1,225 301,324 Commercial real estate - non-owner occupied 429,835 2,730 4,354 1,425 438,344 Farmland 148,680 1,073 146 1,642 151,541 Total real estate 1,419,253 12,281 8,895 13,501 1,453,930 Agricultural 48,517 580 — 6 49,103 Commercial and industrial 110,413 15,686 377 1,744 128,220 Mortgage warehouse 91,813 — — — 91,813 Consumer loans 7,851 151 39 821 8,862 Total gross loans and leases $ 1,677,847 $ 28,698 $ 9,311 $ 16,072 $ 1,731,928
Aging of Loan Balances by Number of Days Past Due	Loan Portfolio Aging (dollars in thousands, unaudited) March 31, 2019 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 $ 1,650 $ — $ — $ 1,650 $ 104,684 $ 106,334 $ — Other construction/land — — 28 28 108,802 108,830 75 1-4 family - closed end 761 — 730 1,491 231,149 232,640 822 Equity lines 67 268 56 391 51,252 51,643 488 Multi-family residential — — — — 55,075 55,075 — Commercial real estate - owner occupied 1,340 — 100 1,440 319,676 321,116 594 Commercial real estate - non-owner occupied 314 — — 314 442,788 443,102 — Farmland — — 1,615 1,615 153,495 155,110 1,642 Total real estate 4,132 268 2,529 6,929 1,466,921 1,473,850 3,621 Agricultural — — — — 52,086 52,086 — Commercial and industrial 26 — 356 382 125,297 125,679 811 Mortgage warehouse lines — — — — 91,118 91,118 — Consumer 98 17 62 177 8,079 8,256 136 Total gross loans and leases $ 4,256 $ 285 $ 2,947 $ 7,488 $ 1,743,501 $ 1,750,989 $ 4,568 (1) As of March 31, 2018 there were no loans over 90 days past due and still accruing. (2) Included in total financing receivables December 31, 2018 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 $ — $ — $ — $ — $ 105,676 $ 105,676 $ — Other construction/land 210 — 27 237 108,786 109,023 82 1-4 family - closed end 319 — 775 1,094 235,731 236,825 799 Equity lines 1,471 — 57 1,528 54,792 56,320 408 Multi-family residential — — — — 54,877 54,877 — Commercial real estate - owner occupied 183 — 102 285 301,039 301,324 605 Commercial real estate - non-owner occupied 49 — — 49 438,295 438,344 49 Farmland 1,555 — — 1,555 149,986 151,541 1,642 Total real estate 3,787 — 961 4,748 1,449,182 1,453,930 3,585 Agricultural — — — — 49,103 49,103 — Commercial and industrial 1,567 83 886 2,536 125,684 128,220 1,425 Mortgage warehouse lines — — — — 91,813 91,813 — Consumer 95 45 56 196 8,666 8,862 146 Total gross loans and leases $ 5,449 $ 128 $ 1,903 $ 7,480 $ 1,724,448 $ 1,731,928 $ 5,156 (1) As of December 31, 2018 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 March 31, 2019 Rate Modification Term Modification Interest Only Modification Rate & Term Modification Total Real estate: Other construction/land $ — $ — $ — $ — $ — 1-4 family - closed-end — — — — — Equity lines — 100 — — 100 Multi-family residential — — — — — Commercial real estate - owner occupied — — — — — Farmland — — — — — Total real estate loans — 100 — — 100 Agricultural — — — — — Commercial and industrial 94 — — — 94 Consumer loans — 9 — — 9 Total $ 94 $ 109 $ — $ — $ 203 Three months ended March 31, 2018 Rate Modification Term Modification Interest Only Modification Rate & Term Modification Total Real estate: Other construction/land $ — $ — $ — $ — $ — 1-4 family - closed-end — — — — — Equity lines — 68 — — 68 Multi-family residential — — — — — Commercial real estate - owner occupied — — — — — Farmland — — — — — Total real estate loans — 68 — — 68 Agricultural — — — — Commercial and industrial — — — — — Consumer loans — — — — — Total $ — $ 68 $ — $ — $ 68 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 March 31, 2019 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 0 — — — — Equity lines 1 100 100 — — Multi-family residential 0 — — — — Commercial real estate - owner occupied 0 — — — — Farmland 0 — — — — Total real estate loans 100 100 — — Agricultural 0 — — — — Commercial and industrial 2 94 94 (20 ) 1 Consumer loans 1 9 9 (2 ) — Total $ 203 $ 203 $ (22 ) $ 1 (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 March 31, 2018 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 0 — — — — Equity lines 1 68 68 — 2 Multi-family residential 0 — — — — Commercial real estate - owner occupied 0 — — — — Farmland 0 — — — — Total real estate loans 68 68 — 2 Agricultural 0 — — — — Commercial and industrial 0 — — — — Consumer loans 0 — — — — Total $ 68 $ 68 $ — $ 2 (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) March 31, 2019 Unpaid Principal Balance Carrying Value Real estate secured $ 100 — Total purchased credit impaired loans $ 100 $ — December 31, 2018 Unpaid Principal Balance Carrying Value Real estate secured $ 103 $ — Total purchased credit impaired loans $ 103 $ —

Allowance for Loan and Lease _2

Allowance for Loan and Lease Losses (Tables)	3 Months Ended
	Mar. 31, 2019
Receivables [Abstract]
Impaired Financing Receivables	Impaired Loans (dollars in thousands, unaudited) March 31, 2019 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 $ 582 $ 427 $ 41 $ 686 $ 10 1-4 family - closed-end 3,279 3,279 73 3,382 43 Equity lines 4,585 4,533 651 4,722 63 Multi-family residential 367 367 22 381 6 Commercial real estate- owner occupied 834 714 125 792 10 Commercial real estate- non-owner occupied 1,502 1,355 3 1,597 26 Total real estate 11,149 10,675 915 11,560 158 Agricultural 6 6 1 6 — Commercial and industrial 970 951 333 1,044 6 Consumer loans 812 774 180 947 13 Subtotal 12,937 12,406 1,429 13,557 177 With no related allowance recorded Real estate: Other construction/land 53 48 — 60 — 1-4 family - closed-end 385 339 — 430 — Equity lines 177 151 — 194 — Commercial real estate- owner occupied 494 494 — 511 — Commercial real estate- non-owner occupied — — — — — Farmland 1,642 1,641 — 1,660 — Total real estate 2,751 2,673 — 2,855 — Agricultural — — — — — Commercial and industrial 169 148 — 298 — Consumer loans 129 15 — 222 — Subtotal 3,049 2,836 — 3,375 — Total $ 15,986 $ 15,242 $ 1,429 $ 16,932 $ 177 (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, 2018 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 $ 593 $ 438 $ 44 $ 648 $ 40 1-4 family - closed-end 3,325 3,325 75 3,182 175 Equity lines 4,603 4,550 656 4,368 206 Multi-family residential 373 373 25 359 20 Commercial real estate- owner occupied 842 723 135 740 40 Commercial real estate- non-owner occupied 1,572 1,425 3 1,644 107 Total real estate 11,308 10,834 938 10,941 588 Agricultural 6 6 1 6 — Commercial and industrial 1,724 1,534 918 1,965 40 Consumer loans 813 764 151 909 61 Subtotal 13,851 13,138 2,008 13,821 689 With no related allowance recorded Real estate: Other construction/land 54 50 — 58 — 1-4 family - closed-end 357 307 — 375 3 Equity lines 224 166 — 221 — Commercial real estate- owner occupied 502 502 — 478 — Commercial real estate- non-owner occupied — — — — — Farmland 1,642 1,642 — 1,538 — Total real estate 2,779 2,667 — 2,670 3 Agricultural — — — — — Commercial and industrial 238 211 — 838 — Consumer loans 182 56 — 273 1 Subtotal 3,199 2,934 — 3,781 4 Total $ 17,050 $ 16,072 $ 2,008 $ 17,602 $ 693 (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 March 31, 2019 Real Estate Agricultural Products Commercial and Industrial Consumer Unallocated Total Allowance for credit losses: Beginning balance $ 5,831 $ 256 $ 2,394 $ 1,239 $ 30 $ 9,750 Charge-offs — — (579 ) (551 ) — (1,130 ) Recoveries 175 — 41 302 — 518 Provision 88 (37 ) 58 139 52 300 Ending balance $ 6,094 $ 219 $ 1,914 $ 1,129 $ 82 $ 9,438 Reserves: Specific $ 915 $ 1 $ 333 $ 180 $ — $ 1,429 General 5,179 218 1,581 949 82 8,009 Ending balance $ 6,094 $ 219 $ 1,914 $ 1,129 $ 82 $ 9,438 Loans evaluated for impairment: Individually $ 13,348 $ 6 $ 1,099 $ 789 $ — $ 15,242 Collectively 1,460,502 52,080 215,698 7,467 — 1,735,747 Ending balance $ 1,473,850 $ 52,086 $ 216,797 $ 8,256 $ — $ 1,750,989 Year ended December 31, 2018 Real Estate Agricultural Products Commercial and Industrial Consumer Unallocated Total Allowance for credit losses: Beginning balance $ 4,786 $ 208 $ 2,772 $ 1,231 $ 46 $ 9,043 Charge-offs (2,474 ) — (608 ) (2,226 ) — (5,308 ) Recoveries 374 23 148 1,120 — 1,665 Provision 3,145 25 82 1,114 (16 ) 4,350 Ending balance $ 5,831 $ 256 $ 2,394 $ 1,239 $ 30 $ 9,750 Reserves: Specific $ 937 $ 2 $ 918 $ 151 $ — $ 2,008 General 4,894 254 1,476 1,088 30 7,742 Ending balance $ 5,831 $ 256 $ 2,394 $ 1,239 $ 30 $ 9,750 Loans evaluated for impairment: Individually $ 13,501 $ 6 $ 1,744 $ 821 $ — $ 16,072 Collectively 1,440,429 49,097 218,289 8,041 — 1,715,856 Ending balance $ 1,453,930 $ 49,103 $ 220,033 $ 8,862 $ — $ 1,731,928

Operating Leases (Tables)

Operating Leases (Tables)	3 Months Ended
	Mar. 31, 2019
Leases [Abstract]
Schedule of Components of Operating Leases	The cost components of our operating leases were as follows for the period ended March 31, 2019 (dollars in thousands, unaudited): March 31, 2019 Lease expense Operating lease cost (cost resulting from lease payments) $ 540 Total lease cost $ 540
Schedule of Cash Flow Information and Weighted Average Remaining Lease Terms and Discount Rates for Operating Leases	The supplemental cash flow information and weighted average remaining lease terms and discount rates for all of our operating leases were as follows (dollars in thousands, unaudited): March 31, 2019 Other information Cash paid for amounts included in the measurement of lease liabilities for operating leases: Operating cash flows (for the three month period ended March 31, 2019) $ 270 Right-of-use assets obtained in exchange for new operating lease liabilities (1) $ 9,446 Weighted-average remaining lease term (in years): Operating leases 5.5 Weighted-average discount rate: Operating leases 5.5 % (1) Right-of-use assets are included in other assets.
Schedule of Maturities for Operating Lease Liabilities	Maturities of our lease liabilities for all operating leases are as follows (dollars in thousands, unaudited): Maturities of Lease Liabilities Nine months ended December 31, 2019 $ 1,643 Year ended December 31, 2020 2,204 Year ended December 31, 2021 1,993 Year ended December 31, 2022 1,558 Year ended December 31, 2023 1,119 Thereafter 3,939 Total 12,456 Less: present value discount (2,390 ) Lease liability (1) $ 10,066 (1) Lease liability is included in other liabilities. The following table presents the future minimum rental payments under leases with terms in excess of one year as of December 31, 2018 presented in accordance with ASC Topic 840, “Leases”: December 31, 2018 2019 $ 2,190 2020 2,204 2021 1,993 2022 1,558 2023 1,119 Thereafter 3,939 Total $ 13,003

Revenue Recognition (Tables)

Revenue Recognition (Tables)	3 Months Ended
	Mar. 31, 2019
Revenue From Contract With Customer [Abstract]
Schedule of Sources of Non-interest Income	The following table presents the Company’s sources of noninterest income for the three months ended March 31, 2019 and 2018. Items outside the scope of ASC 606 are noted as such (dollars in thousands, unaudited). For the three months ended March 31, 2019 2018 Non-interest income Service charges on deposits Returned item and overdraft fees $ 1,567 $ 1,567 Other service charges on deposits 1,376 1,379 Debit card interchange income 1,512 1,399 Loss on limited partnerships (1) (450 ) (405 ) Dividends on equity investments (1) 231 225 Net gains on sale of securities (1) 6 — Other (1) 1,664 968 Total non-interest income $ 5,906 $ 5,133 (1) Not within scope of ASC 606. Revenue streams are not related to contract with customers and are accounted for on an accrual basis under other provisions of GAAP.

The Business of Sierra Bancorp

The Business of Sierra Bancorp (Narrative) (Details) $ in Thousands	May 18, 2018Branch	Mar. 31, 2019USD ($)BankBranch	Dec. 31, 2018USD ($)
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Capital		$ 1,500
Number of acquired banks | Bank		4
Number of full service branch offices | Branch		40
Assets		$ 2,539,087	$ 2,522,502
Cash, FDIC Insured Amount		$ 2,200,000
Community Bank of Santa Maria [Member] | California [Member]
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Number of acquired branches | Branch	1

Current Accounting Developmen_2

Current Accounting Developments (Narrative) (Details) $ in Thousands		3 Months Ended
		Mar. 31, 2019USD ($)BranchATMOffice	Jan. 01, 2019USD ($)
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Operating lease, liability	[1]	$ 10,066
ASU 2016-02 [Member]
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Number of branch locations | Branch		21
Number of ATM locations | ATM		3
Number of administration offices | Office		1
Operating lease, right of use asset			$ 10,000
Operating lease, liability			$ 10,000
ASU 2016-13 [Member] | Minimum [Member]
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Allowance for loan and lease losses increase in percentage		100.00%
[1]	Lease liability is included in other liabilities.

Supplemental Disclosure of Ca_2

Supplemental Disclosure of Cash and Non-Cash Flow Information (Narrative) (Details) - USD ($)	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Cash paid for interest	$ 3,409,000	$ 1,874,000
Cash paid for income taxes	0	0
Asset acquired in settlement of loans	26,000	$ 0
ASU 2016-02 [Member]
Noncash operating right of use asset	9,700,000
Noncash operating lease liability	$ 10,300,000

Share Based Compensation (Narra

Share Based Compensation (Narrative) (Details) - USD ($)	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Share-based Compensation, Total	$ 151,000	$ 76,000
2007 Stock Option Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Options outstanding	341,450
2017 Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized	850,000
Number of shares remained available for grant	690,800

Earnings per Share (Narrative)

Earnings per Share (Narrative) (Details) - shares	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Earnings Per Share [Abstract]
Weighted Average Number of Shares Outstanding, Basic	15,311,154	15,232,696
Weighted Average Number Diluted Shares Outstanding Adjustment	136,593	179,472
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	199,120	169,000

Financial Instruments with Of_3

Financial Instruments with Off-Balance-Sheet Risk (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Commitments to Extend Credit [Member]
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Financial instruments off-balance sheet credit risks	$ 715,163	$ 781,987
Standby Letters of Credit [Member]
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Financial instruments off-balance sheet credit risks	$ 9,580	$ 8,966

Financial Instruments with Of_4

Financial Instruments with Off-Balance-Sheet Risk (Narrative) (Details) $ in Millions	Mar. 31, 2019USD ($)
Financial Instruments With Off Balance Sheet Risk [Abstract]
Letters of Credit Outstanding, Amount	$ 95

Fair Value Disclosures and Re_3

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	Mar. 31, 2019	Dec. 31, 2018
Financial Assets:
Investment securities available for sale	$ 563,628	$ 560,479
Financial liabilities:
Repurchase agreements	19,360	16,359
Carrying Amount [Member]
Financial Assets:
Cash and cash equivalents	68,063	74,132
Investment securities available for sale	563,628	560,479
Loans and leases, net held for investment	1,744,299	1,724,575
Collateral dependent impaired loans	39	205
Financial liabilities:
Deposits	2,160,748	2,116,340
Repurchase agreements	19,360	16,359
Short term borrowings	0	56,100
Subordinated debentures	34,811	34,767
Fair Value [Member]
Financial Assets:
Cash and cash equivalents	68,063	74,132
Investment securities available for sale	563,628	560,479
Loans and leases, net held for investment	1,730,151	1,707,463
Collateral dependent impaired loans	39	205
Financial liabilities:
Deposits	2,160,348	2,115,575
Repurchase agreements	19,360	16,359
Short term borrowings	0	56,100
Subordinated debentures	30,355	30,311
Fair Value [Member] | Fair Value, Inputs, Level 1 [Member]
Financial Assets:
Cash and cash equivalents	68,063	74,132
Investment securities available for sale	0	0
Loans and leases, net held for investment	0	0
Collateral dependent impaired loans	0	0
Financial liabilities:
Deposits	658,524	662,527
Repurchase agreements	19,360	16,359
Short term borrowings	0	0
Subordinated debentures	0	0
Fair Value [Member] | Fair Value, Inputs, Level 2 [Member]
Financial Assets:
Cash and cash equivalents	0	0
Investment securities available for sale	563,628	560,479
Loans and leases, net held for investment	1,730,151	1,707,463
Collateral dependent impaired loans	39	205
Financial liabilities:
Deposits	1,501,824	1,453,048
Repurchase agreements	0	0
Short term borrowings	0	56,100
Subordinated debentures	30,355	30,311
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
Financial liabilities:
Deposits	0	0
Repurchase agreements	0	0
Short term borrowings	0	0
Subordinated debentures	$ 0	$ 0

Fair Value Disclosures and Re_4

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	3 Months Ended	12 Months Ended
	Mar. 31, 2019	Dec. 31, 2018
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available for sale	$ 563,628	$ 560,479
Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available for sale	563,628	560,479
Other-than-temporary impairment losses on equity securities	0	0
Fair Value, Measurements, Recurring [Member] | State and Political Subdivisions [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available for sale	145,712	140,534
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]
Investment securities available for sale	15,447	15,212
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]
Investment securities available for sale	402,469	404,733
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]
Investment securities available for sale	0	0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | State and Political Subdivisions [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment 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]
Investment 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]
Investment securities available for sale	0	0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available for sale	563,628	560,479
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | State and Political Subdivisions [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available for sale	145,712	140,534
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]
Investment securities available for sale	15,447	15,212
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]
Investment securities available for sale	402,469	404,733
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available for sale	0	0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | State and Political Subdivisions [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment 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]
Investment 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]
Investment securities available for sale	$ 0	$ 0

Fair Value Disclosures and Re_5

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 ($)		Mar. 31, 2019	Dec. 31, 2018
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total impaired loans	[1]	$ 15,242,000	$ 16,072,000
Foreclosed assets		806,000	1,082,000
Fair Value, Measurements, Nonrecurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total impaired loans		39,000	205,000
Foreclosed assets		806,000	1,082,000
Total assets measured on a nonrecurring basis		845,000	1,287,000
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		27,000	39,000
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	119,000
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		12,000	47,000
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 nonrecurring 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		39,000	205,000
Foreclosed assets		806,000	1,082,000
Total assets measured on a nonrecurring basis		845,000	1,287,000
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		27,000	39,000
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	119,000
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		12,000	47,000
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 nonrecurring 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
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		0	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		0	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		0	12,000
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		0	12,000
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	0
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	0
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	0
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	0
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
Other construction/land [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		27,000	27,000
Other construction/land [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
Other construction/land [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		27,000	27,000
Other construction/land [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 - Amortized Cost an

Investments - Amortized Cost and Estimated Fair Value of Available-For-Sale Investment Securities (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2019	Dec. 31, 2018
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	$ 566,930	$ 569,942
Gross Unrealized Gains	3,554	1,616
Gross Unrealized Losses	(6,856)	(11,079)
Estimated Fair Value	563,628	560,479
US Government Agencies [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	15,623	15,553
Gross Unrealized Gains	44	12
Gross Unrealized Losses	(220)	(353)
Estimated Fair Value	15,447	15,212
Mortgage-backed Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	407,824	414,208
Gross Unrealized Gains	994	398
Gross Unrealized Losses	(6,349)	(9,873)
Estimated Fair Value	402,469	404,733
State and Political Subdivisions [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	143,483	140,181
Gross Unrealized Gains	2,516	1,206
Gross Unrealized Losses	(287)	(853)
Estimated Fair Value	$ 145,712	$ 140,534

Investments (Narrative) (Detail

Investments (Narrative) (Details)	3 Months Ended
	Mar. 31, 2019USD ($)Security	Dec. 31, 2018USD ($)Security
Available-for-sale, securities in unrealized loss positions, qualitative disclosure, number of positions, total | Security	415	552
Securities available-for-sale	$ 563,628,000	$ 560,479,000
Available-for-sale securities, amortized cost basis, total	566,930,000	569,942,000
Low Income Housing Tax Credit Fund Investments [Member]
Investment, book balance	5,500,000
Investment, remaining commitments for additional capital contributions	1,900,000
Investment, tax credit	133,000
Investment, amortization expense	450,000
States and Political Subdivisions [Member]
Securities available-for-sale	145,712,000	140,534,000
Available-for-sale securities, amortized cost basis, total	143,483,000	$ 140,181,000
States and Political Subdivisions [Member]
Available-for-sale securities, amortized cost basis, total	$ 2,570,000

Investments - Information Perta

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	Mar. 31, 2019	Dec. 31, 2018
Schedule of Available-for-sale Securities [Line Items]
Gross Unrealized Losses, Less than twelve months	$ (102)	$ (1,020)
Fair Value, Less than twelve months	21,311	106,365
Gross Unrealized Losses, Twelve months or more	(6,754)	(10,059)
Fair Value, Twelve months or more	317,477	306,207
U.S. Government Agencies [Member]
Schedule of Available-for-sale Securities [Line Items]
Gross Unrealized Losses, Less than twelve months	(9)	(54)
Fair Value, Less than twelve months	470	2,815
Gross Unrealized Losses, Twelve months or more	(211)	(299)
Fair Value, Twelve months or more	11,004	10,764
Mortgage-backed Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Gross Unrealized Losses, Less than twelve months	(91)	(717)
Fair Value, Less than twelve months	20,340	69,686
Gross Unrealized Losses, Twelve months or more	(6,258)	(9,156)
Fair Value, Twelve months or more	286,791	273,230
State and Political Subdivisions [Member]
Schedule of Available-for-sale Securities [Line Items]
Gross Unrealized Losses, Less than twelve months	(2)	(249)
Fair Value, Less than twelve months	501	33,864
Gross Unrealized Losses, Twelve months or more	(285)	(604)
Fair Value, Twelve months or more	$ 19,682	$ 22,213

Investments - Realized Gain (Lo

Investments - Realized Gain (Loss) on Investments (Details) - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2019	Mar. 31, 2018
Available For Sale Securities Gross Realized Gain Loss [Abstract]
Proceeds from sales, calls and maturities of securities available for sale		$ 16,648	$ 200
Gross gains on sales, calls and maturities of securities available for sale		94	0
Gross losses on sales, calls and maturities of securities available for sale		(88)	0
Net gains on sale of securities available for sale	[1]	$ 6	$ 0
[1]	Not within scope of ASC 606. Revenue streams are not related to contract with customers and are accounted for on an accrual basis under other provisions of GAAP.

Investments - Investments Class

Investments - Investments Classified by Contractual Maturity Date (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Amortized Cost And Estimated Fair Value Of Investment Securities Available For Sale By Contractual Maturity [Line Items]
Maturing within one year, Amortized Cost	$ 7,057	$ 7,726
Maturing after one year through five years, Amortized Cost	183,343	199,840
Maturing after five years through ten years, Amortized Cost	56,211	47,802
Maturing after ten years, Amortized Cost	87,011	83,606
Amortized Cost, Total	566,930	569,942
Maturing within one year, Fair Value	7,103	7,789
Maturing after one year through five years, Fair Value	180,783	195,519
Maturing after five years through ten years, Fair Value	56,502	47,661
Maturing after ten years, Fair Value	88,317	83,444
Fair Value, Total	563,628	560,479
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	233,308	230,968
Investment securities not due at a single maturity date, Fair Value	$ 230,923	$ 226,066

Investments - Summary of Amorti

Investments - Summary of Amortized Cost and Fair Values of General Obligation and Revenue Bonds (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Amortized Cost And Estimated Fair Value Of Investment Securities Available For Sale By Type Of Bonds [Line Items]
Amortized Cost	$ 566,930	$ 569,942
Fair Market Value	563,628	560,479
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	143,483	140,181
Fair Market Value	145,712	140,534
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	120,006	116,291
Fair Market Value	121,961	116,633
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	38,428	36,331
Fair Market Value	38,882	36,199
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	26,741	26,928
Fair Market Value	27,465	27,357
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	16,003	16,036
Fair Market Value	16,306	16,062
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	8,903	8,639
Fair Market Value	8,944	8,601
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	7,391	6,827
Fair Market Value	7,510	6,838
General Obligation Bonds [Member] | Other [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	22,540	21,530
Fair Market Value	22,854	21,576
Revenue Bonds [Member]
Amortized Cost And Estimated Fair Value Of Investment Securities Available For Sale By Type Of Bonds [Line Items]
Amortized Cost	23,477	23,890
Fair Market Value	23,751	23,901
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	7,635	6,942
Fair Market Value	7,679	6,946
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	4,888	2,932
Fair Market Value	4,992	2,901
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	1,669	2,583
Fair Market Value	1,695	2,604
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	1,839	2,053
Fair Market Value	1,838	2,068
Revenue Bonds [Member] | Sewer [Member]
Amortized Cost And Estimated Fair Value Of Investment Securities Available For Sale By Type Of Bonds [Line Items]
Amortized Cost	1,429	1,392
Fair Market Value	1,447	1,398
Revenue Bonds [Member] | Other (13 sources) [Member]
Amortized Cost And Estimated Fair Value Of Investment Securities Available For Sale By Type Of Bonds [Line Items]
Amortized Cost	6,017	7,988
Fair Market Value	6,100	7,984
Revenue 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	23,477	23,890
Fair Market Value	23,751	23,901
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	7,507	7,526
Fair Market Value	7,572	7,506
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	1,748	1,751
Fair Market Value	1,811	1,780
Revenue Bonds [Member] | Other [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	4,896	5,267
Fair Market Value	4,965	5,293
Revenue Bonds [Member] | Utah [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	5,356	5,364
Fair Market Value	5,389	5,353
Revenue Bonds [Member] | Indiana [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	2,635	2,641
Fair Market Value	2,692	2,654
Revenue Bonds [Member] | Virginia [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	1,335	1,341
Fair Market Value	$ 1,322	$ 1,315

Credit Quality and Nonperform_3

Credit Quality and Nonperforming Assets - Credit Quality Classifications (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Financing Receivable Recorded Investment [Line Items]
Total gross loans and leases	$ 1,750,989	$ 1,731,928
Agricultural [Member]
Financing Receivable Recorded Investment [Line Items]
Total gross loans and leases	52,086	49,103
Commercial and Industrial [Member]
Financing Receivable Recorded Investment [Line Items]
Total gross loans and leases	125,679	128,220
Mortgage Warehouse Lines [Member]
Financing Receivable Recorded Investment [Line Items]
Total gross loans and leases	91,118	91,813
Consumer Loans [Member]
Financing Receivable Recorded Investment [Line Items]
Total gross loans and leases	8,256	8,862
Pass [Member]
Financing Receivable Recorded Investment [Line Items]
Total gross loans and leases	1,697,342	1,677,847
Pass [Member] | Agricultural [Member]
Financing Receivable Recorded Investment [Line Items]
Total gross loans and leases	51,905	48,517
Pass [Member] | Commercial and Industrial [Member]
Financing Receivable Recorded Investment [Line Items]
Total gross loans and leases	109,255	110,413
Pass [Member] | Mortgage Warehouse Lines [Member]
Financing Receivable Recorded Investment [Line Items]
Total gross loans and leases	91,118	91,813
Pass [Member] | Consumer Loans [Member]
Financing Receivable Recorded Investment [Line Items]
Total gross loans and leases	7,289	7,851
Special Mention [Member]
Financing Receivable Recorded Investment [Line Items]
Total gross loans and leases	29,358	28,698
Special Mention [Member] | Agricultural [Member]
Financing Receivable Recorded Investment [Line Items]
Total gross loans and leases	175	580
Special Mention [Member] | Commercial and Industrial [Member]
Financing Receivable Recorded Investment [Line Items]
Total gross loans and leases	14,988	15,686
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	154	151
Substandard [Member]
Financing Receivable Recorded Investment [Line Items]
Total gross loans and leases	9,047	9,311
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	337	377
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	24	39
Impaired [Member]
Financing Receivable Recorded Investment [Line Items]
Total gross loans and leases	15,242	16,072
Impaired [Member] | Agricultural [Member]
Financing Receivable Recorded Investment [Line Items]
Total gross loans and leases	6	6
Impaired [Member] | Commercial and Industrial [Member]
Financing Receivable Recorded Investment [Line Items]
Total gross loans and leases	1,099	1,744
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	789	821
Real Estate Loan [Member]
Financing Receivable Recorded Investment [Line Items]
Total gross loans and leases	1,473,850	1,453,930
Real Estate Loan [Member] | 1-4 Family Residential Construction [Member]
Financing Receivable Recorded Investment [Line Items]
Total gross loans and leases	106,334	105,676
Real Estate Loan [Member] | Other construction/land [Member]
Financing Receivable Recorded Investment [Line Items]
Total gross loans and leases	108,830	109,023
Real Estate Loan [Member] | 1-4 Family - Closed-End [Member]
Financing Receivable Recorded Investment [Line Items]
Total gross loans and leases	232,640	236,825
Real Estate Loan [Member] | Equity Lines [Member]
Financing Receivable Recorded Investment [Line Items]
Total gross loans and leases	51,643	56,320
Real Estate Loan [Member] | Multi-Family Residential [Member]
Financing Receivable Recorded Investment [Line Items]
Total gross loans and leases	55,075	54,877
Real Estate Loan [Member] | Commercial Real Estate Owner Occupied [Member]
Financing Receivable Recorded Investment [Line Items]
Total gross loans and leases	321,116	301,324
Real Estate Loan [Member] | Commercial Real Estate Non Owner Occupied [Member]
Financing Receivable Recorded Investment [Line Items]
Total gross loans and leases	443,102	438,344
Real Estate Loan [Member] | Farmland [Member]
Financing Receivable Recorded Investment [Line Items]
Total gross loans and leases	155,110	151,541
Real Estate Loan [Member] | Pass [Member]
Financing Receivable Recorded Investment [Line Items]
Total gross loans and leases	1,437,775	1,419,253
Real Estate Loan [Member] | Pass [Member] | 1-4 Family Residential Construction [Member]
Financing Receivable Recorded Investment [Line Items]
Total gross loans and leases	106,334	105,676
Real Estate Loan [Member] | Pass [Member] | Other construction/land [Member]
Financing Receivable Recorded Investment [Line Items]
Total gross loans and leases	108,162	108,304
Real Estate Loan [Member] | Pass [Member] | 1-4 Family - Closed-End [Member]
Financing Receivable Recorded Investment [Line Items]
Total gross loans and leases	226,307	230,022
Real Estate Loan [Member] | Pass [Member] | Equity Lines [Member]
Financing Receivable Recorded Investment [Line Items]
Total gross loans and leases	44,613	49,346
Real Estate Loan [Member] | Pass [Member] | Multi-Family Residential [Member]
Financing Receivable Recorded Investment [Line Items]
Total gross loans and leases	54,708	54,504
Real Estate Loan [Member] | Pass [Member] | Commercial Real Estate Owner Occupied [Member]
Financing Receivable Recorded Investment [Line Items]
Total gross loans and leases	311,531	292,886
Real Estate Loan [Member] | Pass [Member] | Commercial Real Estate Non Owner Occupied [Member]
Financing Receivable Recorded Investment [Line Items]
Total gross loans and leases	433,866	429,835
Real Estate Loan [Member] | Pass [Member] | Farmland [Member]
Financing Receivable Recorded Investment [Line Items]
Total gross loans and leases	152,254	148,680
Real Estate Loan [Member] | Special Mention [Member]
Financing Receivable Recorded Investment [Line Items]
Total gross loans and leases	14,041	12,281
Real Estate Loan [Member] | Special Mention [Member] | 1-4 Family Residential Construction [Member]
Financing Receivable Recorded Investment [Line Items]
Total gross loans and leases	0	0
Real Estate Loan [Member] | Special Mention [Member] | Other construction/land [Member]
Financing Receivable Recorded Investment [Line Items]
Total gross loans and leases	193	231
Real Estate Loan [Member] | Special Mention [Member] | 1-4 Family - Closed-End [Member]
Financing Receivable Recorded Investment [Line Items]
Total gross loans and leases	1,781	1,861
Real Estate Loan [Member] | Special Mention [Member] | Equity Lines [Member]
Financing Receivable Recorded Investment [Line Items]
Total gross loans and leases	2,038	2,194
Real Estate Loan [Member] | Special Mention [Member] | Multi-Family Residential [Member]
Financing Receivable Recorded Investment [Line Items]
Total gross loans and leases	0	0
Real Estate Loan [Member] | Special Mention [Member] | Commercial Real Estate Owner Occupied [Member]
Financing Receivable Recorded Investment [Line Items]
Total gross loans and leases	5,392	4,192
Real Estate Loan [Member] | Special Mention [Member] | Commercial Real Estate Non Owner Occupied [Member]
Financing Receivable Recorded Investment [Line Items]
Total gross loans and leases	3,565	2,730
Real Estate Loan [Member] | Special Mention [Member] | Farmland [Member]
Financing Receivable Recorded Investment [Line Items]
Total gross loans and leases	1,072	1,073
Real Estate Loan [Member] | Substandard [Member]
Financing Receivable Recorded Investment [Line Items]
Total gross loans and leases	8,686	8,895
Real Estate Loan [Member] | Substandard [Member] | 1-4 Family Residential Construction [Member]
Financing Receivable Recorded Investment [Line Items]
Total gross loans and leases	0	0
Real Estate Loan [Member] | Substandard [Member] | Other construction/land [Member]
Financing Receivable Recorded Investment [Line Items]
Total gross loans and leases	0	0
Real Estate Loan [Member] | Substandard [Member] | 1-4 Family - Closed-End [Member]
Financing Receivable Recorded Investment [Line Items]
Total gross loans and leases	934	1,310
Real Estate Loan [Member] | Substandard [Member] | Equity Lines [Member]
Financing Receivable Recorded Investment [Line Items]
Total gross loans and leases	308	64
Real Estate Loan [Member] | Substandard [Member] | Multi-Family Residential [Member]
Financing Receivable Recorded Investment [Line Items]
Total gross loans and leases	0	0
Real Estate Loan [Member] | Substandard [Member] | Commercial Real Estate Owner Occupied [Member]
Financing Receivable Recorded Investment [Line Items]
Total gross loans and leases	2,985	3,021
Real Estate Loan [Member] | Substandard [Member] | Commercial Real Estate Non Owner Occupied [Member]
Financing Receivable Recorded Investment [Line Items]
Total gross loans and leases	4,316	4,354
Real Estate Loan [Member] | Substandard [Member] | Farmland [Member]
Financing Receivable Recorded Investment [Line Items]
Total gross loans and leases	143	146
Real Estate Loan [Member] | Impaired [Member]
Financing Receivable Recorded Investment [Line Items]
Total gross loans and leases	13,348	13,501
Real Estate Loan [Member] | Impaired [Member] | 1-4 Family Residential Construction [Member]
Financing Receivable Recorded Investment [Line Items]
Total gross loans and leases	0	0
Real Estate Loan [Member] | Impaired [Member] | Other construction/land [Member]
Financing Receivable Recorded Investment [Line Items]
Total gross loans and leases	475	488
Real Estate Loan [Member] | Impaired [Member] | 1-4 Family - Closed-End [Member]
Financing Receivable Recorded Investment [Line Items]
Total gross loans and leases	3,618	3,632
Real Estate Loan [Member] | Impaired [Member] | Equity Lines [Member]
Financing Receivable Recorded Investment [Line Items]
Total gross loans and leases	4,684	4,716
Real Estate Loan [Member] | Impaired [Member] | Multi-Family Residential [Member]
Financing Receivable Recorded Investment [Line Items]
Total gross loans and leases	367	373
Real Estate Loan [Member] | Impaired [Member] | Commercial Real Estate Owner Occupied [Member]
Financing Receivable Recorded Investment [Line Items]
Total gross loans and leases	1,208	1,225
Real Estate Loan [Member] | Impaired [Member] | Commercial Real Estate Non Owner Occupied [Member]
Financing Receivable Recorded Investment [Line Items]
Total gross loans and leases	1,355	1,425
Real Estate Loan [Member] | Impaired [Member] | Farmland [Member]
Financing Receivable Recorded Investment [Line Items]
Total gross loans and leases	$ 1,641	$ 1,642

Credit Quality and Nonperform_4

Credit Quality and Nonperforming Assets (Narrative) (Details) - USD ($)		3 Months Ended
		Mar. 31, 2019	Dec. 31, 2018
Credit Quality And Nonperforming Assets [Abstract]
Foreclosed assets		$ 806,000	$ 1,082,000
Gross nonperforming loans	[1]	4,568,000	5,156,000
Troubled debt restructurings, total amount		11,840,000
Troubled debt restructurings on non-accrual status		1,090,000
Purchase credit impaired loans, allowance for loan losses		100,000	$ 103,000
Certain loans acquired in transfer accounted for as debt securities, accretable yield, accretion		$ 0
[1]	Included in total financing receivables

Credit Quality and Nonperform_5

Credit Quality and Nonperforming Assets - Past Due and Nonaccrual Loans (Details) - USD ($)		Mar. 31, 2019		Dec. 31, 2018		Mar. 31, 2018
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due		$ 7,488,000		$ 7,480,000
Current		1,743,501,000		1,724,448,000
Total Financing Receivables		1,750,989,000		1,731,928,000
Non-Accrual Loans	[1]	4,568,000		5,156,000
Real Estate Loan [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due		6,929,000		4,748,000
Current		1,466,921,000		1,449,182,000
Total Financing Receivables		1,473,850,000		1,453,930,000
Non-Accrual Loans	[1]	3,621,000		3,585,000
1-4 Family Residential Construction [Member] | Real Estate Loan [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due		1,650,000		0
Current		104,684,000		105,676,000
Total Financing Receivables		106,334,000		105,676,000
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		28,000		237,000
Current		108,802,000		108,786,000
Total Financing Receivables		108,830,000		109,023,000
Non-Accrual Loans	[1]	75,000		82,000
1-4 Family - Closed-End [Member] | Real Estate Loan [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due		1,491,000		1,094,000
Current		231,149,000		235,731,000
Total Financing Receivables		232,640,000		236,825,000
Non-Accrual Loans	[1]	822,000		799,000
Equity Lines [Member] | Real Estate Loan [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due		391,000		1,528,000
Current		51,252,000		54,792,000
Total Financing Receivables		51,643,000		56,320,000
Non-Accrual Loans	[1]	488,000		408,000
Multi Family Residential [Member] | Real Estate Loan [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due		0		0
Current		55,075,000		54,877,000
Total Financing Receivables		55,075,000		54,877,000
Non-Accrual Loans	[1]	0		0
Commercial Real Estate Owner Occupied [Member] | Real Estate Loan [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due		1,440,000		285,000
Current		319,676,000		301,039,000
Total Financing Receivables		321,116,000		301,324,000
Non-Accrual Loans	[1]	594,000		605,000
Commercial Real Estate Non Owner Occupied [Member] | Real Estate Loan [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due		314,000		49,000
Current		442,788,000		438,295,000
Total Financing Receivables		443,102,000		438,344,000
Non-Accrual Loans	[1]	0		49,000
Farmland [Member] | Real Estate Loan [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due		1,615,000		1,555,000
Current		153,495,000		149,986,000
Total Financing Receivables		155,110,000		151,541,000
Non-Accrual Loans	[1]	1,642,000		1,642,000
Agricultural [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due		0		0
Current		52,086,000		49,103,000
Total Financing Receivables		52,086,000		49,103,000
Non-Accrual Loans	[1]	0		0
Commercial And Industrial Loan [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due		382,000		2,536,000
Current		125,297,000		125,684,000
Total Financing Receivables		125,679,000		128,220,000
Non-Accrual Loans	[1]	811,000		1,425,000
Mortgage Warehouse Lines [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due		0		0
Current		91,118,000		91,813,000
Total Financing Receivables		91,118,000		91,813,000
Non-Accrual Loans	[1]	0		0
Consumer Loans [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due		177,000		196,000
Current		8,079,000		8,666,000
Total Financing Receivables		8,256,000		8,862,000
Non-Accrual Loans	[1]	136,000		146,000
30-59 Days Past Due [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due		4,256,000		5,449,000
30-59 Days Past Due [Member] | Real Estate Loan [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due		4,132,000		3,787,000
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		1,650,000		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		210,000
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		761,000		319,000
30-59 Days Past Due [Member] | Equity Lines [Member] | Real Estate Loan [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due		67,000		1,471,000
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 Owner Occupied [Member] | Real Estate Loan [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due		1,340,000		183,000
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		314,000		49,000
30-59 Days Past Due [Member] | Farmland [Member] | Real Estate Loan [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due		0		1,555,000
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		26,000		1,567,000
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 Loans [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due		98,000		95,000
60-89 Days Past Due [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due		285,000		128,000
60-89 Days Past Due [Member] | Real Estate Loan [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due		268,000		0
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		0		0
60-89 Days Past Due [Member] | Equity Lines [Member] | Real Estate Loan [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due		268,000		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 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] | 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		83,000
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 Loans [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due		17,000		45,000
90 Days Or More Past Due [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due		2,947,000	[2]	1,903,000	[3]
90 Days Or More Past Due [Member] | Real Estate Loan [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due		2,529,000	[2]	961,000	[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		28,000	[2]	27,000	[3]
90 Days Or More Past Due [Member] | 1-4 Family - Closed-End [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due				0		$ 0
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		730,000	[2]	775,000	[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		56,000	[2]	57,000	[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 Owner Occupied [Member] | Real Estate Loan [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due		100,000	[2]	102,000	[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		1,615,000	[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]	0	[3]
90 Days Or More Past Due [Member] | Commercial And Industrial Loan [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due		356,000	[2]	886,000	[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 Loans [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due		$ 62,000	[2]	$ 56,000	[3]
[1]	Included in total financing receivables
[2]	As of March 31, 2018 there were no loans over 90 days past due and still accruing.
[3]	As of December 31, 2018 there were no loans over 90 days past due and still accruing.

Credit Quality and Nonperform_6

Credit Quality and Nonperforming Assets - Past Due and Nonaccrual Loans (Parenthetical) (Details) - USD ($)	Mar. 31, 2019		Dec. 31, 2018		Mar. 31, 2018
Financing Receivable Recorded Investment Past Due [Line Items]
Financing Receivable, Recorded Investment, Past Due And Accruing	$ 7,488,000		$ 7,480,000
90 Days Or More Past Due [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Financing Receivable, Recorded Investment, Past Due And Accruing	$ 2,947,000	[1]	1,903,000	[2]
90 Days Or More Past Due [Member] | 1-4 Family - Closed-End [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Financing Receivable, Recorded Investment, Past Due And Accruing			$ 0		$ 0
[1]	As of March 31, 2018 there were no loans over 90 days past due and still accruing.
[2]	As of December 31, 2018 there were no loans over 90 days past due and still accruing.

Credit Quality and Nonperform_7

Credit Quality and Nonperforming Assets - Troubled Debt Restructurings, by Type of Loan Modification (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Financing Receivable, Modifications [Line Items]
Financing Receivable Modifications Post Modification Recorded Investment During Period	$ 203	$ 68
Consumer Loans [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable Modifications Post Modification Recorded Investment During Period	9	0
Agricultural [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable Modifications Post Modification Recorded Investment During Period	0	0
Commercial And Industrial Loans [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable Modifications Post Modification Recorded Investment During Period	94	0
Real Estate Loans [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable Modifications Post Modification Recorded Investment During Period	100	68
Real Estate Loans [Member] | Farmland [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable Modifications Post Modification Recorded Investment During Period	0	0
Real Estate Loans [Member] | Other Construction Land [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable Modifications Post Modification Recorded Investment During Period	0	0
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
Real Estate Loans [Member] | Equity Line Of Credit [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable Modifications Post Modification Recorded Investment During Period	100	68
Real Estate Loans [Member] | Multifamily [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable Modifications Post Modification Recorded Investment During Period	0	0
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
Troubled Debt Restructurings Rate Modifications [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable Modifications Post Modification Recorded Investment During Period	94	0
Troubled Debt Restructurings Rate Modifications [Member] | Consumer Loans [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable Modifications Post Modification Recorded Investment During Period	0	0
Troubled Debt Restructurings Rate Modifications [Member] | Agricultural [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable Modifications Post Modification Recorded Investment During Period	0	0
Troubled Debt Restructurings Rate Modifications [Member] | Commercial And Industrial Loans [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable Modifications Post Modification Recorded Investment During Period	94	0
Troubled Debt Restructurings Rate Modifications [Member] | Real Estate Loans [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable Modifications Post Modification Recorded Investment During Period	0	0
Troubled Debt Restructurings Rate Modifications [Member] | Real Estate Loans [Member] | Farmland [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable Modifications Post Modification Recorded Investment During Period	0	0
Troubled Debt Restructurings Rate 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
Troubled Debt Restructurings Rate 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
Troubled Debt Restructurings Rate 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	0	0
Troubled Debt Restructurings Rate Modifications [Member] | Real Estate Loans [Member] | Multifamily [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable Modifications Post Modification Recorded Investment During Period	0	0
Troubled Debt Restructurings Rate 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
Troubled Debt Restructurings Term Modifications [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable Modifications Post Modification Recorded Investment During Period	109	68
Troubled Debt Restructurings Term Modifications [Member] | Consumer Loans [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable Modifications Post Modification Recorded Investment During Period	9	0
Troubled Debt Restructurings Term Modifications [Member] | Agricultural [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable Modifications Post Modification Recorded Investment During Period	0	0
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
Troubled Debt Restructurings Term Modifications [Member] | Real Estate Loans [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable Modifications Post Modification Recorded Investment During Period	100	68
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
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
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
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	100	68
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
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	0	0
Troubled Debt Restructurings Interest Only Modification [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable Modifications Post Modification Recorded Investment During Period	0	0
Troubled Debt Restructurings Interest Only Modification [Member] | Consumer Loans [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable Modifications Post Modification Recorded Investment During Period	0	0
Troubled Debt Restructurings Interest Only Modification [Member] | Agricultural [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable Modifications Post Modification Recorded Investment During Period	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
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
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
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
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
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
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
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
Troubled Debt Restructurings Rate And Term Modifications [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable Modifications Post Modification Recorded Investment During Period	0	0
Troubled Debt Restructurings Rate And Term Modifications [Member] | Consumer Loans [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable Modifications Post Modification Recorded Investment During Period	0	0
Troubled Debt Restructurings Rate And Term Modifications [Member] | Agricultural [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable Modifications Post Modification Recorded Investment During Period	0	0
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
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	0	0
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	0
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
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	0	0
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	0	0
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
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

Credit Quality and Nonperform_8

Credit Quality and Nonperforming Assets - Troubled Debt Restructurings (Details) $ in Thousands		3 Months Ended
		Mar. 31, 2019USD ($)Number	Mar. 31, 2018USD ($)Number
Financing Receivable, Modifications [Line Items]
Pre-Modification Outstanding Recorded Investment		$ 203	$ 68
Post-Modification Outstanding Recorded Investment		203	68
Reserve Difference	[1]	(22)	0
Reserve		$ 1	$ 2
Consumer Loans [Member]
Financing Receivable, Modifications [Line Items]
Number of Loans | Number		1	0
Pre-Modification Outstanding Recorded Investment		$ 9	$ 0
Post-Modification Outstanding Recorded Investment		9	0
Reserve Difference	[1]	(2)	0
Reserve		$ 0	$ 0
Agricultural [Member]
Financing Receivable, Modifications [Line Items]
Number of Loans | Number		0	0
Pre-Modification Outstanding Recorded Investment		$ 0	$ 0
Post-Modification Outstanding Recorded Investment		0	0
Reserve Difference	[1]	0	0
Reserve		$ 0	$ 0
Commercial And Industrial Loans [Member]
Financing Receivable, Modifications [Line Items]
Number of Loans | Number		2	0
Pre-Modification Outstanding Recorded Investment		$ 94	$ 0
Post-Modification Outstanding Recorded Investment		94	0
Reserve Difference	[1]	(20)	0
Reserve		1	0
Real Estate Loans [Member]
Financing Receivable, Modifications [Line Items]
Pre-Modification Outstanding Recorded Investment		100	68
Post-Modification Outstanding Recorded Investment		100	68
Reserve Difference	[1]	0	0
Reserve		$ 0	$ 2
Real Estate Loans [Member] | Farmland [Member]
Financing Receivable, Modifications [Line Items]
Number of Loans | Number		0	0
Pre-Modification Outstanding Recorded Investment		$ 0	$ 0
Post-Modification Outstanding Recorded Investment		0	0
Reserve Difference	[1]	0	0
Reserve		$ 0	$ 0
Real Estate Loans [Member] | One to Four Family [Member]
Financing Receivable, Modifications [Line Items]
Number of Loans | Number		0	0
Pre-Modification Outstanding Recorded Investment		$ 0	$ 0
Post-Modification Outstanding Recorded Investment		0	0
Reserve Difference	[1]	0	0
Reserve		$ 0	$ 0
Real Estate Loans [Member] | Equity Line Of Credit [Member]
Financing Receivable, Modifications [Line Items]
Number of Loans | Number		1	1
Pre-Modification Outstanding Recorded Investment		$ 100	$ 68
Post-Modification Outstanding Recorded Investment		100	68
Reserve Difference	[1]	0	0
Reserve		$ 0	$ 2
Real Estate Loans [Member] | Multifamily [Member]
Financing Receivable, Modifications [Line Items]
Number of Loans | Number		0	0
Pre-Modification Outstanding Recorded Investment		$ 0	$ 0
Post-Modification Outstanding Recorded Investment		0	0
Reserve Difference	[1]	0	0
Reserve		$ 0	$ 0
Real Estate Loans [Member] | Commercial Real Estate Owner Occupied [Member]
Financing Receivable, Modifications [Line Items]
Number of Loans | Number		0	0
Pre-Modification Outstanding Recorded Investment		$ 0	$ 0
Post-Modification Outstanding Recorded Investment		0	0
Reserve Difference	[1]	0	0
Reserve		$ 0	$ 0
Real Estate Loans [Member] | Other construction/Land [Member]
Financing Receivable, Modifications [Line Items]
Number of Loans | Number		0	0
Pre-Modification Outstanding Recorded Investment		$ 0	$ 0
Post-Modification Outstanding Recorded Investment		0	0
Reserve Difference	[1]	0	0
Reserve		$ 0	$ 0
[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 Nonperform_9

Credit Quality and Nonperforming Assets - Carrying Amount and Unpaid Principal Balance of Purchased Credit Impaired Loans (Details) - USD ($) $ in Thousands		Mar. 31, 2019	Dec. 31, 2018
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, Unpaid Principal Balance, Total	[1]	$ 15,986	$ 17,050
Impaired Financing Receivable, Carrying Value, Total	[2]	15,242	16,072
Purchased Credit Impaired Loans [Member]
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, Unpaid Principal Balance, Total		100	103
Purchased Credit Impaired Loans [Member] | Real Estate Loans [Member]
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, Unpaid Principal Balance, Total		$ 100	$ 103
[1]	Contractual principal balance due from customer.
[2]	Principal balance on Company's books, less any direct charge offs.

Allowance for Loan and Lease _3

Allowance for Loan and Lease Losses (Narrative) (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Receivables [Abstract]
Impaired Financing Receivable With Specific Reserves	$ 1,021	$ 1,048
Percentage Of Impaired Loans With Appraisal	97.00%
General	$ 8,009

Allowance for Loan and Lease _4

Allowance for Loan and Lease Losses - Individually Impaired Loans (Details) - USD ($) $ in Thousands		3 Months Ended	12 Months Ended
		Mar. 31, 2019	Dec. 31, 2018
Financing Receivable, Impaired [Line Items]
With an Allowance Recorded Unpaid Principal Balance	[1]	$ 12,937	$ 13,851
With an Allowance Recorded Recorded Investment	[2]	12,406	13,138
With an Allowance Recorded Related Allowance		1,429	2,008
With an Allowance Recorded Average Recorded Investment		13,557	13,821
With an Allowance Recorded Interest Income Recognized	[3]	177	689
With no Related Allowance Recorded Unpaid Principal Balance	[1]	3,049	3,199
With no Related Allowance Recorded Recorded Investment	[2]	2,836	2,934
With no Related Allowance Recorded Related Allowance		0	0
With no Related Allowance Recorded Average Recorded Investment		3,375	3,781
With no Related Allowance Recorded Interest Income Recognized	[3]	0	4
Individually impaired loans Unpaid Principal Balance	[1]	15,986	17,050
Total impaired loans	[2]	15,242	16,072
Individually impaired loans Related Allowance		1,429	2,008
Individually impaired loans Average Recorded Investment		16,932	17,602
Individually impaired loans Interest Income Recognized	[3]	177	693
Agricultural [Member]
Financing Receivable, Impaired [Line Items]
With an Allowance Recorded Unpaid Principal Balance	[1]	6	6
With an Allowance Recorded Recorded Investment	[2]	6	6
With an Allowance Recorded Related Allowance		1	1
With an Allowance Recorded Average Recorded Investment		6	6
With an Allowance Recorded Interest Income Recognized	[3]	0	0
With no Related Allowance Recorded Unpaid Principal Balance	[1]	0	0
With no Related Allowance Recorded Recorded Investment	[2]	0	0
With no Related Allowance Recorded Related Allowance		0	0
With no Related Allowance Recorded Average Recorded Investment		0	0
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]	970	1,724
With an Allowance Recorded Recorded Investment	[2]	951	1,534
With an Allowance Recorded Related Allowance		333	918
With an Allowance Recorded Average Recorded Investment		1,044	1,965
With an Allowance Recorded Interest Income Recognized	[3]	6	40
With no Related Allowance Recorded Unpaid Principal Balance	[1]	169	238
With no Related Allowance Recorded Recorded Investment	[2]	148	211
With no Related Allowance Recorded Related Allowance		0	0
With no Related Allowance Recorded Average Recorded Investment		298	838
With no Related Allowance Recorded Interest Income Recognized	[3]	0	0
Consumer Loans [Member]
Financing Receivable, Impaired [Line Items]
With an Allowance Recorded Unpaid Principal Balance	[1]	812	813
With an Allowance Recorded Recorded Investment	[2]	774	764
With an Allowance Recorded Related Allowance		180	151
With an Allowance Recorded Average Recorded Investment		947	909
With an Allowance Recorded Interest Income Recognized	[3]	13	61
With no Related Allowance Recorded Unpaid Principal Balance	[1]	129	182
With no Related Allowance Recorded Recorded Investment	[2]	15	56
With no Related Allowance Recorded Related Allowance		0	0
With no Related Allowance Recorded Average Recorded Investment		222	273
With no Related Allowance Recorded Interest Income Recognized	[3]	0	1
Real Estate Loan [Member]
Financing Receivable, Impaired [Line Items]
With an Allowance Recorded Unpaid Principal Balance	[1]	11,149	11,308
With an Allowance Recorded Recorded Investment	[2]	10,675	10,834
With an Allowance Recorded Related Allowance		915	938
With an Allowance Recorded Average Recorded Investment		11,560	10,941
With an Allowance Recorded Interest Income Recognized	[3]	158	588
With no Related Allowance Recorded Unpaid Principal Balance	[1]	2,751	2,779
With no Related Allowance Recorded Recorded Investment	[2]	2,673	2,667
With no Related Allowance Recorded Related Allowance		0	0
With no Related Allowance Recorded Average Recorded Investment		2,855	2,670
With no Related Allowance Recorded Interest Income Recognized	[3]	0	3
Real Estate Loan [Member] | Other construction/land [Member]
Financing Receivable, Impaired [Line Items]
With an Allowance Recorded Unpaid Principal Balance	[1]	582	593
With an Allowance Recorded Recorded Investment	[2]	427	438
With an Allowance Recorded Related Allowance		41	44
With an Allowance Recorded Average Recorded Investment		686	648
With an Allowance Recorded Interest Income Recognized	[3]	10	40
With no Related Allowance Recorded Unpaid Principal Balance	[1]	53	54
With no Related Allowance Recorded Recorded Investment	[2]	48	50
With no Related Allowance Recorded Related Allowance		0	0
With no Related Allowance Recorded Average Recorded Investment		60	58
With no Related Allowance Recorded Interest Income Recognized	[3]	0	0
Real Estate Loan [Member] | 1-4 Family - Closed-End [Member]
Financing Receivable, Impaired [Line Items]
With an Allowance Recorded Unpaid Principal Balance	[1]	3,279	3,325
With an Allowance Recorded Recorded Investment	[2]	3,279	3,325
With an Allowance Recorded Related Allowance		73	75
With an Allowance Recorded Average Recorded Investment		3,382	3,182
With an Allowance Recorded Interest Income Recognized	[3]	43	175
With no Related Allowance Recorded Unpaid Principal Balance	[1]	385	357
With no Related Allowance Recorded Recorded Investment	[2]	339	307
With no Related Allowance Recorded Related Allowance		0	0
With no Related Allowance Recorded Average Recorded Investment		430	375
With no Related Allowance Recorded Interest Income Recognized	[3]	0	3
Real Estate Loan [Member] | Equity Lines [Member]
Financing Receivable, Impaired [Line Items]
With an Allowance Recorded Unpaid Principal Balance	[1]	4,585	4,603
With an Allowance Recorded Recorded Investment	[2]	4,533	4,550
With an Allowance Recorded Related Allowance		651	656
With an Allowance Recorded Average Recorded Investment		4,722	4,368
With an Allowance Recorded Interest Income Recognized	[3]	63	206
With no Related Allowance Recorded Unpaid Principal Balance	[1]	177	224
With no Related Allowance Recorded Recorded Investment	[2]	151	166
With no Related Allowance Recorded Related Allowance		0	0
With no Related Allowance Recorded Average Recorded Investment		194	221
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]	367	373
With an Allowance Recorded Recorded Investment	[2]	367	373
With an Allowance Recorded Related Allowance		22	25
With an Allowance Recorded Average Recorded Investment		381	359
With an Allowance Recorded Interest Income Recognized	[3]	6	20
Real Estate Loan [Member] | Commercial Real Estate Owner Occupied [Member]
Financing Receivable, Impaired [Line Items]
With an Allowance Recorded Unpaid Principal Balance	[1]	834	842
With an Allowance Recorded Recorded Investment	[2]	714	723
With an Allowance Recorded Related Allowance		125	135
With an Allowance Recorded Average Recorded Investment		792	740
With an Allowance Recorded Interest Income Recognized	[3]	10	40
With no Related Allowance Recorded Unpaid Principal Balance	[1]	494	502
With no Related Allowance Recorded Recorded Investment	[2]	494	502
With no Related Allowance Recorded Related Allowance		0	0
With no Related Allowance Recorded Average Recorded Investment		511	478
With no Related Allowance Recorded Interest Income Recognized	[3]	0	0
Real Estate Loan [Member] | Commercial Real Estate Non Owner Occupied [Member]
Financing Receivable, Impaired [Line Items]
With an Allowance Recorded Unpaid Principal Balance	[1]	1,502	1,572
With an Allowance Recorded Recorded Investment	[2]	1,355	1,425
With an Allowance Recorded Related Allowance		3	3
With an Allowance Recorded Average Recorded Investment		1,597	1,644
With an Allowance Recorded Interest Income Recognized	[3]	26	107
With no Related Allowance Recorded Unpaid Principal Balance	[1]	0	0
With no Related Allowance Recorded Recorded Investment	[2]	0	0
With no Related Allowance Recorded Related Allowance		0	0
With no Related Allowance Recorded Average Recorded Investment		0	0
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]	1,642	1,642
With no Related Allowance Recorded Recorded Investment	[2]	1,641	1,642
With no Related Allowance Recorded Related Allowance		0	0
With no Related Allowance Recorded Average Recorded Investment		1,660	1,538
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 _5

Allowance for Loan and Lease Losses - Activity in Allowance for Loan and Lease Losses (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2019	Dec. 31, 2018
Allowance for credit losses:
Beginning balance	$ 9,750	$ 9,043
Charge-offs	(1,130)	(5,308)
Recoveries	518	1,665
Provision	300	4,350
Ending balance	9,438	9,750
Reserves:
Specific	1,429	2,008
General	8,009	7,742
Ending balance	9,438	9,750
Loans evaluated for impairment:
Individually	15,242	16,072
Collectively	1,735,747	1,715,856
Total Financing Receivables	1,750,989	1,731,928
Unallocated [Member]
Allowance for credit losses:
Beginning balance	30	46
Charge-offs	0	0
Recoveries	0	0
Provision	52	(16)
Ending balance	82	30
Reserves:
Specific	0	0
General	82	30
Ending balance	82	30
Loans evaluated for impairment:
Individually	0	0
Collectively	0	0
Total Financing Receivables	0	0
Commercial and Industrial [Member]
Allowance for credit losses:
Beginning balance	256	208
Charge-offs	0	0
Recoveries	0	23
Provision	(37)	25
Ending balance	219	256
Reserves:
Specific	1	2
General	218	254
Ending balance	219	256
Loans evaluated for impairment:
Individually	6	6
Collectively	52,080	49,097
Total Financing Receivables	52,086	49,103
Commercial and Industrial [Member]
Allowance for credit losses:
Beginning balance	2,394	2,772
Charge-offs	(579)	(608)
Recoveries	41	148
Provision	58	82
Ending balance	1,914	2,394
Reserves:
Specific	333	918
General	1,581	1,476
Ending balance	1,914	2,394
Loans evaluated for impairment:
Individually	1,099	1,744
Collectively	215,698	218,289
Total Financing Receivables	216,797	220,033
Consumer Loans [Member]
Allowance for credit losses:
Beginning balance	1,239	1,231
Charge-offs	(551)	(2,226)
Recoveries	302	1,120
Provision	139	1,114
Ending balance	1,129	1,239
Reserves:
Specific	180	151
General	949	1,088
Ending balance	1,129	1,239
Loans evaluated for impairment:
Individually	789	821
Collectively	7,467	8,041
Total Financing Receivables	8,256	8,862
Real Estate Loan [Member]
Allowance for credit losses:
Beginning balance	5,831	4,786
Charge-offs	0	(2,474)
Recoveries	175	374
Provision	88	3,145
Ending balance	6,094	5,831
Reserves:
Specific	915	937
General	5,179	4,894
Ending balance	6,094	5,831
Loans evaluated for impairment:
Individually	13,348	13,501
Collectively	1,460,502	1,440,429
Total Financing Receivables	$ 1,473,850	$ 1,453,930

Operating Leases - (Narrative)

Operating Leases - (Narrative) (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2019USD ($)BranchATMOffice
Lessee Lease Description [Line Items]
Rent expense | $	$ 557
ASU 2016-02 [Member]
Lessee Lease Description [Line Items]
Number of branch locations | Branch	21
Number of ATM locations | ATM	3
Number of administration offices | Office	1

Operating Leases - Schedule of

Operating Leases - Schedule of Components of Operating Leases (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2019USD ($)
Leases [Abstract]
Operating lease cost (cost resulting from lease payments)	$ 540
Total lease cost	$ 540

Operating Leases - Schedule o_2

Operating Leases - Schedule of Cash Flow Information and Weighted Average Remaining Lease Terms and Discount Rate for Operating Leases (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2019USD ($)
Cash paid for amounts included in the measurement of lease liabilities for operating leases:
Operating cash flows (for the three month period ended March 31, 2019)	$ 270
Right-of-use assets obtained in exchange for new operating lease liabilities	$ 9,446	[1]
Weighted average remaining lease term (years)	5 years 6 months
Weighted average discount rate	5.50%
[1]	Right-of-use assets are included in other assets.

Operating Leases - Schedule o_3

Operating Leases - Schedule of Maturities of Lease Liabilities for Operating Leases (Details) $ in Thousands	Mar. 31, 2019USD ($)
Leases [Abstract]
Nine months ended December 31, 2019	$ 1,643
Year ended December 31, 2020	2,204
Year ended December 31, 2021	1,993
Year ended December 31, 2022	1,558
Year ended December 31, 2023	1,119
Thereafter	3,939
Total	12,456
Less: present value discount	(2,390)
Operating lease, liability	$ 10,066	[1]
[1]	Lease liability is included in other liabilities.

Operating Leases - Schedule o_4

Operating Leases - Schedule of Future Minimum Rental Payments (Details) $ in Thousands	Dec. 31, 2018USD ($)
Leases [Abstract]
2019	$ 2,190
2020	2,204
2021	1,993
2022	1,558
2023	1,119
Thereafter	3,939
Total	$ 13,003

Revenue Recognition (Narrative)

Revenue Recognition (Narrative) (Details)	3 Months Ended
	Mar. 31, 2019
Revenue From Contract With Customer [Abstract]
Percentage of revenue outside of scope of ASC 606	24.60%

Revenue Recognition - Schedule

Revenue Recognition - Schedule of Sources of Non-interest Income (Details) - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2019	Mar. 31, 2018
Non-interest income
Returned item and overdraft fees		$ 1,567	$ 1,567
Other service charges on deposits		1,376	1,379
Debit card interchange income		1,512	1,399
Loss on limited partnerships	[1]	(450)	(405)
Dividends on equity investments	[1]	231	225
Net gains on sale of securities	[1]	6	0
Other	[1]	1,664	968
Total non-interest income		$ 5,906	$ 5,133
[1]	Not within scope of ASC 606. Revenue streams are not related to contract with customers and are accounted for on an accrual basis under other provisions of GAAP.