Guaranty Bancorp 10-K 28 Feb 18 2017 FY Annual report Financial data

Document And Entity Information

Document And Entity Information - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Feb. 27, 2018	Jun. 30, 2017
Document And Entity Information [Abstract]
Entity Registrant Name	Guaranty Bancorp
Entity Central Index Key	1,324,410
Document Type	10-K
Document Period End Date	Dec. 31, 2017
Amendment Flag	false
Current Fiscal Year End Date	--12-31
Entity Current Reporting Status	Yes
Entity Filer Category	Accelerated Filer
Entity Public Float			$ 599.5
Entity Common Stock, Shares Outstanding		29,305,602
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Document Fiscal Year Focus	2,017
Document Fiscal Period Focus	FY
Trading Symbol	gbnk

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($)		Dec. 31, 2017	Dec. 31, 2016
Assets
Cash and due from banks		$ 51,553,000	$ 50,111,000
Time deposits with banks		254,000	254,000
Securities available for sale, at fair value		329,977,000	324,228,000
Securities held to maturity (fair value of $257,665 and $239,404 at December 31, 2017 and December 31, 2016)		259,916,000	243,979,000
Bank stocks, at cost		24,419,000	22,649,000
Total investments		614,312,000	590,856,000
Loans held for sale		1,725,000	4,129,000
Loans, held for investment, net of deferred fees and costs		2,805,663,000	2,515,009,000
Less allowance for loan losses		(23,250,000)	(23,250,000)
Net loans, held for investment		2,782,413,000	2,491,759,000
Premises and equipment, net		65,874,000	67,390,000
Other real estate owned and foreclosed assets		761,000	569,000
Goodwill		65,106,000	56,404,000
Other intangible assets, net		14,441,000	15,317,000
Bank-owned life insurance		78,573,000	65,538,000
Other assets		23,878,000	24,100,000
Total assets		3,698,890,000	3,366,427,000
Deposits:
Noninterest-bearing demand		939,550,000	916,632,000
Interest-bearing demand and NOW		813,882,000	767,523,000
Money market		527,621,000	484,664,000
Savings		201,687,000	164,478,000
Time		458,887,000	365,787,000
Total deposits		2,941,627,000	2,699,084,000
Securities sold under agreement to repurchase, carrying value		44,746,000	36,948,000
Federal Home Loan Bank line of credit borrowing		157,444,000	124,691,000
Federal Home Loan Bank term notes		70,000,000	72,477,000
Subordinated debentures, net		65,065,000	64,981,000
Interest payable and other liabilities		15,109,000	15,868,000
Total liabilities		3,293,991,000	3,014,049,000
Stockholders' equity:
Common stock	[1]	32,000	31,000
Additional paid-in capital - common stock		859,509,000	832,067,000
Accumulated deficit		(343,383,000)	(367,944,000)
Accumulated other comprehensive loss		(4,694,000)	(6,726,000)
Treasury stock, at cost, 2,421,208 and 2,361,882 shares, respectively		(106,565,000)	(105,050,000)
Total stockholders' equity		404,899,000	352,378,000
Total liabilities and stockholders' equity		$ 3,698,890,000	$ 3,366,427,000
[1]	Common stock-$0.001 par value; 40,000,000 shares authorized; 31,643,472 shares issued and 29,222,264 shares outstanding at December 31, 2017 (including 434,149 shares of unvested restricted stock); 40,000,000 shares authorized; 30,695,886 shares issued and 28,334,004 shares outstanding at December 31, 2016 (including 513,187 shares of unvested restricted stock).

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Consolidated Balance Sheets [Abstract]
Total securities held to maturity, Fair value	$ 257,665	$ 239,404
Common stock, par value (in dollars per share)	$ 0.001	$ 0.001
Common stock, shares authorized	40,000,000	40,000,000
Common stock, shares issued	31,643,472	30,695,886
Common stock, shares outstanding	29,222,264	28,334,004
Common stock, unvested restricted stock	434,149	513,187
Treasury stock, shares	2,421,208	2,361,882

Consolidated Statements Of Inco

Consolidated Statements Of Income - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Interest income:
Loans, including costs and fees	$ 118,674	$ 87,249	$ 70,188
Investment securities:
Taxable	9,264	7,625	8,325
Tax-exempt	4,933	3,683	2,852
Dividends	1,290	1,063	959
Federal funds sold and other	141	233	6
Total interest income	134,302	99,853	82,330
Interest expense:
Deposits	7,344	4,859	3,207
Securities sold under agreement to repurchase	71	52	45
Borrowings	2,648	2,549	1,285
Subordinated debentures	3,440	2,005	814
Total interest expense	13,503	9,465	5,351
Net interest income	120,799	90,388	76,979
Provision for loan losses	992	143	96
Net interest income, after provision for loan losses	119,807	90,245	76,883
Noninterest income:
Deposit service and other fees	13,951	10,447	8,941
Investment management and trust	6,005	5,452	5,189
Increase in cash surrender value of life insurance	2,559	2,005	1,758
Gain (loss) on sale of securities	(6)	(73)	132
Gain on sale of SBA loans	1,256	873	824
Other	1,679	553	336
Total noninterest income	25,444	19,257	17,180
Noninterest expense:
Salaries and employee benefits	46,762	40,946	33,564
Occupancy expense	6,664	5,887	6,312
Furniture and equipment	3,898	3,070	3,007
Amortization of intangible assets	2,745	1,557	1,981
Other real estate owned, net	174	31	80
Insurance and assessments	2,666	2,314	2,398
Professional fees	4,129	3,639	3,220
Impairment of long-lived assets	394	185	122
Other general and administrative	19,363	15,158	9,655
Total noninterest expense	86,795	72,787	60,339
Income before income taxes	58,456	36,715	33,724
Income tax expense	19,832	11,988	11,270
Net income	$ 38,624	$ 24,727	$ 22,454
Earnings per common share-basic:	$ 1.38	$ 1.06	$ 1.07
Earnings per common share-diluted:	1.36	1.05	1.06
Dividends declared per common share:	$ 0.50	$ 0.46	$ 0.40
Weighted average common shares outstanding-basic:	28,056,588	23,267,108	21,065,590
Weighted average common shares outstanding-diluted:	28,343,687	23,559,947	21,272,336

Consolidated Statements Of Comp

Consolidated Statements Of Comprehensive Income - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Consolidated Statements Of Comprehensive Income [Abstract]
Net income	$ 38,624	$ 24,727	$ 22,454
Changes in net unrealized gains (losses) on available for sale securities during the period excluding the change attributable to available for sale securities reclassified to held to maturity	1,868	(4,304)	(1,971)
Income tax effect related to changes in unrealized (gains) losses arising during the period	(710)	1,636	750
Change in unamortized loss on available for sale securities reclassified into held to maturity securities	486	504	427
Change in unamortized loss on available for sale securities reclassified into held to maturity securities, Income tax effect	(185)	(192)	(162)
Reclassification adjustment for net losses (gains) included in net income during the period	6	73	(132)
Income tax effect related to the reclassification adjustment	(2)	(28)	50
Change in fair value of derivatives during the period	136	(296)	(1,250)
Change in fair value of derivatives during the period, Income tax effect	(52)	113	475
Reclassification adjustment of losses on derivatives during the period	783	925	218
Income tax effect related to the reclassification adjustment of losses (gains) included in net income on derivatives during the period	(298)	(352)	(83)
Other comprehensive income (loss)	2,032	(1,921)	(1,678)
Total comprehensive income	$ 40,656	$ 22,806	$ 20,776

Consolidated Statements Of Chan

Consolidated Statements Of Changes In Stockholders' Equity - USD ($) $ in Thousands	Common Stock Shares Outstanding [Member]	Common Stock and Additional Paid-in Capital [Member]	Treasury Stock [Member]	Accumulated Deficit [Member]	Accumulated Other Comprehensive Loss [Member]	Total
Balance at Dec. 31, 2014		$ 709,365	$ (103,127)	$ (396,172)	$ (3,127)	$ 206,939
Common Stock, Shares, Outstanding, Beginning Balance at Dec. 31, 2014	21,628,873
Net income				22,454		22,454
Other comprehensive income (loss)					(1,678)	(1,678)
Stock compensation awards, net of forfeitures (in shares)	115,690
Stock based compensation awards, net		2,739				2,739
Tax effect of restricted stock vestings		230				230
Repurchase of common stock			(616)			(616)
Repurchase of common stock (in shares)	(39,711)
Dividends paid				(8,429)		(8,429)
Balance at Dec. 31, 2015		712,334	(103,743)	(382,147)	(4,805)	221,639
Common Stock, Shares, Outstanding, Ending Balance at Dec. 31, 2015	21,704,852
Net income				24,727		24,727
Other comprehensive income (loss)					(1,921)	(1,921)
Issuance of common stock for acquisition, net of issuance costs		116,643				116,643
Issuance of common stock for acquisition, net of issuance costs (in shares)	6,533,756
Stock compensation awards, net of forfeitures (in shares)	169,534
Stock based compensation awards, net		3,121				3,121
Repurchase of common stock			(1,307)			(1,307)
Repurchase of common stock (in shares)	(74,138)
Dividends paid				(10,524)		(10,524)
Balance at Dec. 31, 2016		832,098	(105,050)	(367,944)	(6,726)	$ 352,378
Common Stock, Shares, Outstanding, Ending Balance at Dec. 31, 2016	28,334,004					28,334,004
Net income				38,624		$ 38,624
Other comprehensive income (loss)					2,032	2,032
Issuance of common stock for acquisition, net of issuance costs		24,420				24,420
Issuance of common stock for acquisition, net of issuance costs (in shares)	840,629
Stock compensation awards, net of forfeitures (in shares)	106,957
Stock based compensation awards, net		3,023				3,023
Repurchase of common stock			(1,515)			(1,515)
Repurchase of common stock (in shares)	(59,326)
Dividends paid				(14,063)		(14,063)
Balance at Dec. 31, 2017		$ 859,541	$ (106,565)	$ (343,383)	$ (4,694)	$ 404,899
Common Stock, Shares, Outstanding, Ending Balance at Dec. 31, 2017	29,222,264					29,222,264

Consolidated Statements Of Cha7

Consolidated Statements Of Changes In Stockholders' Equity (Parenthetical) - $ / shares	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Consolidated Statements Of Changes In Stockholders' Equity [Abstract]
Dividends paid, per share	$ 0.50	$ 0.46	$ 0.40

Consolidated Statements Of Cash

Consolidated Statements Of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Cash flows from operating activities:
Net income	$ 38,624	$ 24,727	$ 22,454
Reconciliation of net income to net cash from operating activities:
Depreciation and amortization	5,716	4,270	4,728
Net amortization (accretion) on investment and loan portfolios	(953)	872	530
Provision for loan losses	992	143	96
Impairment of long-lived assets	394	185	122
Stock compensation, net	3,023	3,121	2,739
Dividends on bank stocks	(434)	(521)	(504)
Increase in cash surrender value of life insurance	(2,164)	(1,629)	(1,453)
Net gain on sale of securities and SBA loans	(1,250)	(800)	(956)
Landlord cash allowance			934
Loss (gain) on the sale of other assets	(271)	345	18
Origination of SBA loans with intent to sell	(8,455)	(12,990)	(6,538)
Proceeds from the sale of SBA loans originated with intent to sell	13,795	10,587	8,038
Loss, net, and valuation adjustments on real estate owned	160	105	42
Net change in:
Interest receivable and other assets	1,035	(282)	(969)
Net deferred income tax assets	1,723	(360)	4,105
Interest payable and other liabilities	(91)	977	47
Net cash from operating activities	51,844	28,750	33,433
Activity in available for sale securities:
Sales, maturities, prepayments and calls	125,234	411,461	61,276
Purchases	(91,934)	(152,650)	(22,561)
Activity in held to maturity securities and bank stocks:
Maturities, prepayments and calls	25,443	29,599	19,047
Purchases	(43,052)	(60,639)	(35,320)
Loan originations, net of principal collections	(122,461)	(142,268)	(224,202)
Loan purchases	(98,940)	(109,519)	(50,111)
Redemption of time deposits with banks		250
Purchase of bank-owned life insurance contracts	(7,500)	(15,000)	(5,000)
Proceeds from sale of other assets	1,463	2,204	1,293
Proceeds from sales of other real estate owned and foreclosed assets	514	45	1,427
Proceeds from sale of SBA and other loans transferred to held for sale	3,939	229	589
Additions to premises and equipment	(1,549)	(1,464)	(5,136)
Cash paid in acquisition, net of cash received	21,717	(23,915)	(1,457)
Net cash from investing activities	(187,126)	(61,667)	(260,155)
Cash flows from financing activities:
Net change in deposits	114,160	127,561	116,521
Repayment of Federal Home Loan Bank term notes	(2,409)	(50,026)
Net change in borrowings on Federal Home Loan Bank line of credit	32,753	(63,208)	45,547
Proceeds from Federal Home Loan Bank term notes		25,000	75,000
Proceeds from issuance of subordinated debt, net of issuance costs		39,170
Cash dividends on common stock	(14,063)	(10,524)	(8,429)
Net change in repurchase agreements and federal funds purchased	7,798	(9,515)	(7,031)
Repurchase of common stock	(1,515)	(1,307)	(616)
Payment of stock issuance costs related to acquisition		(834)
Net cash from financing activities	136,724	56,317	220,992
Net change in cash and cash equivalents	1,442	23,400	(5,730)
Cash and cash equivalents, beginning of period	50,111	26,711	32,441
Cash and cash equivalents, end of period	51,553	50,111	26,711
Supplemental disclosure of cash flow activity:
Interest paid on deposits and borrowed funds	13,731	8,312	5,484
Income taxes paid	15,983	12,653	7,262
Supplemental disclosure of noncash activities:
Common stock issued in acquisition	24,420	117,477
Loans transferred to other real estate owned and foreclosed assets	113
Real estate transferred to held for sale	$ 4,278
Reclassification of available for sale securities into held to maturity		$ 63,432	$ 49,084

Organization

Organization	12 Months Ended
	Dec. 31, 2017
Organization [Abstract]
Organization	(1) Organization Guaranty Bancorp is a bank holding company registered under the Bank Holding Company Act of 1956, as amended, and headquartered in Colorado.  The Company’s principal business is to serve as a holding company for its wholly owned bank subsidiary, Guaranty Bank and Trust Company, referred to as the “Bank”.  References to the “Company,” “us,” “we,” and “our” refer to Guaranty Bancorp on a consolidated basis. References to “Guaranty Bancorp” or to the “holding company” refer to the parent company on a stand-alone basis.

Summary Of Significant Accounti

Summary Of Significant Accounting Policies	12 Months Ended
	Dec. 31, 2017
Summary of Significant Accounting Policies [Abstract]
Summary of Significant Accounting Policies	 (2) Summary of Significant Accounting Policies  (a) Nature of Operations and Principles of Consolidation  The Bank is a full-service community bank offering an array of banking products and services to the communities it serves along the Front Range of Colorado including accepting time and demand deposits and originating commercial loans, commercial and residential real estate loans, Small Business Administration (“SBA”) guaranteed loans and consumer loans. The Bank, together with its wholly owned subsidiary Private Capital Management, LLC (“PCM”), provides wealth management services, including private banking, investment management and trust services. On April 3, 2017, Cherry Hills Investment Advisors, Inc. (“CHIA”), a previously wholly owned subsidiary of the Bank, was consolidated into PCM. Substantially all of the Bank’s loans are secured by specific items of collateral, including business assets, commercial and residential real estate, which include land or improved land and consumer assets. There are no significant concentrations of loans to any one industry or customer. On September 8, 2016, the Company completed the acquisition of Home State Bancorp (“Home State”), based in Loveland, Colorado, in exchange for a combination of Company stock and cash. T he transaction enhanced the Company’s balance sheet liquidity and supports the Company’s objective of serving the banking needs of northern Colorado business and consumer customers. On October 27, 2017, the Company completed the acquisition of Castle Rock Bank Holding Company (“Castle Rock”), based in Castle Rock, Colorado in exchange for Company stock. Similar to the Home State acquisition, the Castle Rock acquisition enhanced the Company’s liquidity and grew market share in Douglas County, Colorado.  The accounting and reporting policies of the Company conform to generally accepted accounting principles in the United States of America. All material intercompany balances and transactions have been eliminated in consolidation. The Company’s financial statements reflect all adjustments that are, in the opinion of management, necessary for a fair presentation of its financial position and results of operations for the periods presented. All such adjustments are of a normal and recurring nature. Subsequent events have been evaluated through the date of financial statement issuance. (b) Business Combinations  The Company accounts for acquisitions of businesses using the acquisition method of accounting. Under the acquisition method, assets acquired and liabilities assumed are recorded at their estimated fair value upon the date of acquisition. Management utilizes various valuation techniques including discounted cash flow analyses to determine the fair values of assets acquired and liabilities assumed. Any excess of purchase price over amounts allocated to the acquired assets, including identifiable intangible assets, and liabilities assumed is recorded as goodwill. (c) Use of Estimates  The preparation of the consolidated financial statements in conformity with U.S. generally accepted accounting principles requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities as of the dates of the consolidated balance sheets and income and expense for the periods presented. Actual results could differ significantly from those estimates.  (d) Cash Flows  Cash and cash equivalents on the Company’s consolidated balance sheets include cash-on-hand, balances due from banks and interest-bearing deposits in other financial institutions that have an original maturity of three months or less and are carried at cost. Net cash flows are reported for customer loan and deposit transactions, interest-bearing deposits in other financial institutions, short-term borrowings, federal funds purchased and repurchase agreements.  (e) Time Deposits with Banks  The Company may invest in short term, fully insured time deposits with other banks.  (f) Securities  Securities are classified as held to maturity and carried at amortized cost when management has the positive intent and ability to hold them to maturity. Securities not classified as held to maturity are classified as available for sale. Securities available for sale are carried at fair value, with unrealized gains and losses reported in other comprehensive income, net of tax.  Interest income includes amortization of purchase premium or discount. Premiums and discounts on securities are amortized according to the effective interest method without anticipating prepayments, except for mortgage-backed securities where prepayments are anticipated. Gains and losses on sales are recorded on the trade date and determined using the specific identification method.  Management evaluates securities for other-than-temporary impairment (“OTTI”) on a quarterly basis, and more frequently when economic or market conditions warrant such an evaluation. For securities in an unrealized loss position, management considers the extent and duration of the unrealized loss and the financial condition and near-term prospects of the issuer. Management also assesses whether it intends to sell, or more likely than not will be required to sell, a security in an unrealized loss position before recovery of its amortized cost basis. If either of the criteria regarding intent or requirement to sell is met, the entire difference between amortized cost and fair value is recognized as an impairment to earnings.  The investments in bank stocks are reviewed by management quarterly for potential OTTI. This quarterly review considers the credit quality of the institution, the institution’s ability to repurchase shares and the Company’s carrying value in the shares relative to book value. Based on these reviews, management concluded that there was no impairment during 2017, 2016 and 2015.  (g) Loans and Loan Commitments  The Company extends commercial, real estate and consumer loans to customers. A substantial portion of the loan portfolio consists of commercial and real estate loans throughout the Front Range of Colorado. The ability of the Company’s borrowers to honor their loan contracts is generally dependent upon the real estate and general economic conditions prevailing in Colorado, among other factors.  Loans acquired in a business combination, that on the date of acquisition reflected evidence of credit deterioration since origination and for which collection of all contractually required payments was not probable, were designated as purchased credit impaired or “PCI” loans. In the September 8, 2016 Home State transaction, the Company designated $2,108,000 of loans as PCI. In the October 27, 2017 Castle Rock transaction, the Company designated $1,283,000 of loans as PCI. As of December 31, 2017, $1,622,000 in PCI loans remained in the Company’s loan portfolio. Loans not designated as PCI (“Non-PCI” loans) comprise the significant majority of the Company’s loan portfolio and consist of internally originated loans in addition to acquired loans. Acquired Non-PCI loans were designated as such as of the date of acquisition for one or both of the following reasons: (1) management considered the collection of all contractually required payments probable, and (2) the loan demonstrated no evidence of credit deterioration since origination.  Loans that management has the intent and ability to hold for the foreseeable future, or until maturity or payoff, are reported at their outstanding unpaid principal balances, adjusted for charge-offs, the allowance for loan losses, acquisition-related discounts and any deferred fees or costs. Acquired loans are recorded upon acquisition at fair value, with no associated allowance for loan loss. However, if subsequent to acquisition the credit quality of an acquired loan deteriorates, an allowance may be required. Accounting for loans is performed consistently across all portfolio segments and classes.  A portfolio segment is defined in accounting guidance as the level at which an entity develops and documents a systematic methodology to determine its allowance for loan losses. A class is defined in accounting guidance as a group of loans having similar initial measurement attributes, risk characteristics and methods for monitoring and assessing risk.  Interest income is accrued on the unpaid principal balance of the Company’s loans. Loan origination fees, net of direct origination costs, are deferred and recognized as an adjustment to the related loan yield using the effective interest method without anticipating prepayments. Purchase discount or premium on acquired, Non-PCI loans is recognized as an adjustment to interest income over the contractual life of such loans using the effective interest method, or taken into income when the related loans are paid off or sold. With respect to PCI loans, the “accretable yield”, calculated as the excess of undiscounted expected cash flows over the present value of expected cash flows, is accreted into income over the term of the loan assuming the amount and timing of cash flows are reasonably estimable.  The accrual of interest on loans is discontinued (and the loan is put on nonaccrual status) at the time the loan is 90 days past due unless the loan is well secured and in process of collection. The time at which a loan enters past due status is based on the contractual terms of the loan. In all cases, loans are placed on nonaccrual or charged-off prior to the date on which they would otherwise enter past due status if collection of principal or interest is considered doubtful. The interest on a nonaccrual loan is accounted for using the cost-recovery or cash-basis method, until the loan qualifies for a return to the accrual-basis method. Under the cost-recovery method, interest income is not recognized until the loan balance is reduced to zero, with payments received being applied first to the principal balance of the loan. Under the cash-basis method, interest income is recognized when the payment is received in cash. A loan is returned to accrual status after the delinquent borrower’s financial condition has improved, when all the principal and interest amounts contractually due are brought current and when the likelihood of the borrower making future timely payments is reasonably assured.  Financial instruments include off ‑balance sheet credit instruments, such as commitments to make loans and commercial letters of credit issued to meet customer financing needs. The face amount of each item represents the Company’s total exposure to loss with respect to the item before considering customer collateral or ability to repay. Such financial instruments are recorded when they are funded.  (h) Allowance for Loan Losses and Allowance for Unfunded Commitments  The allowance for loan losses or “the allowance” is a valuation allowance for probable incurred loan losses and is reported as a reduction of outstanding loan balances.  Management evaluates the amount of the allowance on a regular basis based upon its periodic review of the collectability of the Company’s loans. Factors affecting the collectability of the loans include the nature and volume of the loan portfolio, adverse situations that may affect borrowers’ ability to repay, estimated value of any underlying collateral and prevailing economic conditions. This evaluation is inherently subjective as it requires estimates that are susceptible to significant revision as more information becomes available. Management maintains the allowance at a level that it deems appropriate to adequately provide for probable incurred losses in the loan portfolio and other extensions of credit. The Company’s methodology for estimating the allowance is consistent across all portfolio segments and classes of loans.  Loans deemed to be uncollectable are charged-off and deducted from the allowance. The Company’s loan portfolio primarily consists of non-homogeneous commercial and real estate loans where charge-offs are considered on a loan-by-loan basis based on the facts and circumstances, including management’s evaluation of collateral values in comparison to book values on collateral-dependent loans. Charge-offs on smaller balance unsecured homogenous type loans such as overdrafts and ready reserves are recognized by the time the loan in question is 90 days past due. The provision for loan losses and recoveries on loans previously charged-off are added to the allowance.  The allowance consists of both specific and general components. The specific component relates to loans that are individually classified as impaired. All loans are subject to individual impairment evaluation should the pertinent facts and circumstances suggest that such evaluation is necessary. Factors considered by management in determining impairment include the loan’s payment status and the probability of collecting scheduled principal and interest payments when they become due. Loans that experience insignificant payment delays and payment shortfalls generally are not classified as impaired. A loan is considered impaired when, based on current information and events, it is probable that the Company will be unable to collect the scheduled payments of principal or interest when due according to the contractual terms of the original underlying loan agreement. Management determines the significance of payment delays and payment shortfalls on a case-by-case basis, taking into consideration all of the circumstances surrounding the loan and the borrower, including the length of the delay, the reasons for the delay, the borrower’s prior payment record, and the amount of the shortfall in relation to the principal and interest owed. If a loan is impaired, a portion, if any, of the allowance is allocated so that the loan is reported at the present value of estimated future cash flows using the loan’s original contractual rate or at the fair value of collateral, less estimated selling costs, if repayment is expected solely from collateral. Troubled debt restructurings (“TDRs”) are separately identified for impairment disclosures. If a TDR is considered to be a collateral-dependent loan, impairment of the loan is measured using the fair value of the collateral, less estimated selling costs. Likewise, if a TDR is not collateral-dependent, impairment is measured by the present value of estimated future cash flows using the loan’s effective rate at inception. For TDRs that subsequently default, the Company determines the amount of reserve in accordance with its accounting policy for the allowance.  The general component of the allowance covers all other loans not specifically identified as impaired and is determined by calculating losses recognized by portfolio segment during the current credit cycle and adjusted based on management’s evaluation of various qualitative factors. In performing this calculation, loans are aggregated into one of three portfolio segments: Real Estate, Consumer and Commercial & Other. An assessment of risks impacting loans in each of these portfolio segments is performed, and qualitative adjustment factors, which will adjust the historical loss rate, are estimated. These qualitative adjustment factors consider current conditions relative to conditions present throughout the current credit cycle in the following areas: credit quality, loan class concentration levels, economic conditions, loan growth dynamics and organizational conditions. The historical loss experience is adjusted for management’s estimate of the impact of these factors based on the risks present for each portfolio segment.  The Company recognizes a liability in relation to unfunded commitments that is intended to represent the estimated future losses on commitments. In calculating the amount of this liability, management considers the amount of the Company’s off-balance sheet commitments, estimated utilization factors and loan specific risk factors. The Company’s liability for unfunded commitments is calculated quarterly and the liability is included under “other liabilities” in the consolidated balance sheet.  (i) Loans Held for Sale  Particular loans may be considered “held for sale” as of the Company’s balance sheet date. The Company routinely sells SBA guaranteed loans, and historically has designated select classified or nonaccrual loans as held-for-sale as part of its strategy to dispose of these non-earning assets. Once the decision is made to sell a loan, the loan is designated as held for sale and carried at the lower of cost or fair value, with any required write-down being taken at the time of the reclassification.  (j) Transfers of Financial Assets  Transfers of financial assets are accounted for as sales when control over the assets has been relinquished. Control over transferred assets is deemed to be surrendered when the assets have been isolated from the Company, the transferee obtains the right (free of conditions that constrain it from taking advantage of that right) to pledge or exchange the transferred assets, and the Company does not maintain effective control over the transferred assets through an agreement to repurchase them before their maturity.  (k) Other Real Estate Owned and Foreclosed Assets  Assets acquired through, or in lieu of, loan foreclosure are initially recorded at fair value less costs to sell when acquired, establishing a new cost basis. If the asset’s fair value declines subsequent to the asset’s acquisition, a valuation allowance is recorded through expense. Operating revenues and expenses of these assets and reductions in the fair value of the assets are included in noninterest expense. Gains and losses on their disposition are also included in noninterest expense. (l) Premises and Equipment  Land is carried at cost. Buildings, equipment and software are carried at cost, less accumulated depreciation and amortization computed on the straight-line method over the useful life of the asset. Leasehold improvements are depreciated over the shorter of their estimated useful life or the lease term. Buildings and leasehold improvements carry an estimated useful life of five to 40 years and equipment and software carry an estimated useful life of one to 15 years. Repairs and maintenance are charged to noninterest expense as incurred.  (m) Bank Stocks  The Bank is a member of the Federal Home Loan Bank (FHLB) system. Members are required to own a certain amount of stock based on the level of borrowings and other factors, and may invest in additional amounts. The Bank also owns Federal Reserve Bank (FRB) stock, Bankers’ Bank of the West (BBW) stock and Pacific Coast Bankers’ Bank (PCBB) stock. FHLB, FRB, BBW and PCBB stock is carried at cost, classified as a restricted security, and periodically reviewed for impairment based on the likelihood of ultimate recovery of par value. Both cash and stock dividends are reported as income.  (n) Goodwill and Other Intangible Assets  Goodwill was recorded in both the Home State and Castle Rock transactions and represents the excess of the purchase price over the fair value of acquired tangible assets and identifiable intangible assets less liabilities. Goodwill is assessed at least annually for impairment and any such impairment is recognized in the period identified.  Intangible assets acquired in a business combination are amortized over their estimated useful lives to their estimated residual values and evaluated for impairment whenever changes in circumstances indicate that such an evaluation is necessary.  Core deposit intangible assets (“CDI assets”) are recognized at the time of their acquisition based on valuations prepared by independent third parties or other estimates of fair value. In preparing such valuations, management considers variables such as deposit servicing costs, attrition rates and market discount rates. CDI assets are amortized to expense over their useful lives, ranging from 10 years to 15 years.  Customer relationship intangible assets are recognized at the time of their acquisition based upon management’s estimate of their fair value. In preparing their valuation, management considers variables such as growth in existing customer base, attrition rates and market discount rates. The c ustomer relationship intangible assets are amortized to expense over their estimated useful life, which has been estimated to be 10 years.  (o) Impairment of Long-Lived Assets  Long-lived assets, such as premises and equipment, and finite-lived intangible assets subject to amortization, are reviewed for impairment whenever events or changes in circumstances indicate that the carrying value of an asset may not be recoverable. The recoverability of assets to be held and used is measured by a comparison of the carrying value of the asset to the estimated undiscounted future cash flows expected to be generated by the asset. If the carrying value of an asset exceeds its estimated undiscounted future cash flows, an impairment charge is recognized by the amount by which the carrying value of the asset exceeds the fair value of the asset, less costs to sell.  Assets to be disposed of are reported at the lower of their carrying value or fair value less costs to sell, classified as held for sale and moved into other assets. At the time of the transfer into held for sale depreciation is suspended. During 2017, the Company recognized $394,000 in impairment charges on three properties acquired in the Home State transaction and designated as held for sale during the year. During 2016, the Company recognized an impairment charge of $185,000 on a long-lived asset. During 2015 the Company recognized $122,000 in impairment charges on the sale of a former branch facility.  (p) Derivative Instruments  The Company records all derivatives on its consolidated balance sheet at fair value. At the inception of a derivative contract, the Company designates the derivative as one of three types based on the Company’s intentions and belief as to the derivative’s likely effectiveness as a hedge. These three types are (1) a hedge of the fair value of a recognized asset or liability or of an unrecognized firm commitment (“fair value hedge”), (2) a hedge of a forecasted transaction or the variability of cash flows to be received or paid related to a recognized asset or liability (“cash flow hedge”), or (3) an instrument with no hedging designation (“stand-alone derivative”). To date, the Company has entered into cash flow hedges and stand-alone derivative agreements but has not entered into any fair value hedges. For a cash flow hedge, the gain or loss on the derivative is reported in other comprehensive income and is reclassified into earnings in the same periods during which the hedged transaction impacts earnings. Any portion of the cash flow hedge not deemed highly effective in hedging the changes in expected cash flows of the hedged item is recognized immediately in current earnings. Changes in the fair value of derivatives that do not qualify for hedge accounting are reported currently in earnings, as noninterest income.  The Company formally documents the relationship between derivatives and hedged items, as well as the risk-management objective and the strategy for undertaking hedge transactions, at the inception of the derivative contract. This documentation includes linking cash flow hedges to specific assets and liabilities on the balance sheet or to specific firm commitments or forecasted transactions. The Company also formally assesses, both at the hedge’s inception and on an ongoing basis, whether the hedge is highly effective in offsetting changes in cash flows of the hedged items.  (q) Stock Incentive Plan  The Company’s Amended and Restated 2005 Stock Incentive Plan (the “Incentive Plan”) provided for the grant of equity-based awards representing up to a total of 1,700,000 shares of voting common stock to key employees, nonemployee directors, consultants and prospective employees. The Incentive Plan expired by its terms on April 4, 2015. At the Company’s annual meeting of stockholders on May 5, 2015, the Company’s stockholders approved the Guaranty Bancorp 2015 Long-Term Incentive Plan (the “2015 Plan”), which had been previously approved by the Company’s Board of Directors. The 2015 Plan provides for the grant of stock options, stock awards, stock unit awards, performance stock awards, stock appreciation rights, and other equity-based awards representing up to a total of 935,000 shares of voting common stock to key employees, nonemployee directors, consultants and prospective employees. All awards issued under the Incentive Plan will remain outstanding in accordance with their terms despite the expiration of the Incentive Plan; however, any awards granted subsequent to the expiration of the Incentive Plan have been, and will continue to be, issued under the 2015 Plan. As of December 31, 2017 there were 619,819 shares remaining available for grant under the 2015 Plan.  As of December 31, 2017, the Company had granted stock awards under both the Incentive Plan and the 2015 plan. The Company recognizes stock compensation expense for services received in a share-based payment transaction over the requisite service period, generally defined as the vesting period. For awards with graded vesting, compensation cost is recognized on a straight-line basis over the requisite service period for the entire award. The compensation cost of employee and director services received in exchange for stock awards is based on the grant date fair value of the award, as determined by quoted market prices. Stock compensation expense is recognized using an estimated forfeiture rate, adjusted as necessary to reflect actual forfeitures. The Company has issued stock awards that vest based on the passage of time over service periods of one to five years (in some cases vesting in annual installments, in other cases cliff vesting at the end of the service period), and other stock awards that vest contingent upon the satisfaction of certain performance conditions. The last date on which outstanding performance stock awards may vest is February 15, 2020. Compensation cost related to the performance stock awards is recognized based on an evaluation of expected financial performance in comparison to established criteria. Should expectations of the Company’s future financial performance change, expense to be recognized in future periods could be impacted.  (r) Stock Repurchase Plan  On February 12, 2018, the Company’s Board of Directors authorized the extension of the expiration date of the Company’s share repurchase program originally announced in April 2014. Due to previous extensions the program was scheduled to expire on April 2, 2018, however, this most recent extension extends the expiration date of the repurchase program through April 2, 2019. Pursuant to the program, the Company may repurchase up to 1,000,000 shares of its voting common stock, par value $0.001 per share. As of the date of this filing, the Company had not repurchased any shares under the program.  (s) Bank-Owned Life Insurance  The Bank has life insurance policies on certain key executives and former key executives. Bank-owned life insurance (“BOLI”) is recorded at the amount that can be realized under the insurance contract at the balance sheet date , which is the cash surrender value adjusted for other charges or other amounts likely due at settlement.  (t) Income Taxes  Income tax expense is the total of the current year’s income tax payable or refundable and the increase or decrease in deferred tax assets and liabilities. Deferred tax assets and liabilities are recognized for the future tax consequences attributable to differences between the financial statement carrying amounts of existing assets and liabilities and their respective tax bases and operating loss and tax credit carry forwards. Deferred tax assets and liabilities are measured using enacted tax rates expected to apply to taxable income in the years in which those temporary differences are expected to be recovered or settled. The effect on deferred tax assets and liabilities of a change in tax rates is recognized in income in the period of the enactment date. During 2017 the President of the United States signed the 2017 Tax Cuts and Jobs Act (“the Tax Act”) which reduced the statutory Federal corporate income tax rate from 35% to 21% beginning in 2018. As a result, the Company’s existing deferred tax assets and liabilities expecting to be reversed beginning in 2018 had to be re-measured in 2017 using the updated statutory rates applicable in 2018. The re-measurement of the Company’s net deferred tax asset resulted in a $976,000 re-measurement charge being recognized in income tax expense in 2017.  Deferred tax assets are reduced by a valuation allowance when, in the opinion of management, it is more likely than not that the Company will not realize some portion of, or the entire deferred tax asset. In assessing the Company’s likelihood of realizing deferred tax assets, management evaluates both positive and negative evidence, forecasts of future income, taking into account applicable tax planning strategies, and assessments of current and future economic and business conditions. Management performs this analysis quarterly and adjusts as necessary. At December 31, 2017 and December 31, 2016, the Company had a net deferred tax asset of $ 1,802,000 and $ 4,846,000 , respectively, which includes the deferred tax asset associated with the net unrealized loss on securities and interest rate swaps. The portion of the total deferred tax asset relating to net unrealized losses on securities and interest rate swaps was $1,867,000 as of December 31, 2017 and $4,124,000 as of December 31, 2016. After analyzing the composition of and changes in the deferred tax assets and liabilities and considering the Company’s forecasted future taxable income and various tax planning strategies, including the intent to hold the securities available for sale that were in a loss position until maturity, management determined that as of December 31, 2017, it was more likely than not that the net deferred tax asset would be fully realized. As a result, there was no valuation allowance with respect to the Company’s deferred tax asset as of December 31, 2017 or December 31, 2016.  The Company and the Bank are subject to U.S. federal income tax, State of Colorado income tax and income tax in other states. Generally, the Company is no longer subject to examination by Federal taxing authorities for years before 2014 and is no longer subject to examination by the State of Colorado for years before 2013. The Company recognizes interest related to income tax matters as interest expense and penalties related to income tax matters as other noninterest expense. At December 31, 2017 and December 31, 2016 , the Company did not have any amounts accrued for interest or penalties.  (u) Segments of an Enterprise and Related Information  The Company operates as a single segment. The operating information used by the Company’s executive officers and its Chief Executive Officer for purposes of assessing performance and making operating decisions impacting the Company is the consolidated financial data presented in this report. For the years ended 2017, 2016, and 2015 the Company had one active operating subsidiary, the Bank. The Company has determined that banking is its one reportable business segment.  (v) Earnings per Common Share  Basic earnings per common share represents the earnings allocable to common stockholders divided by the weighted average number of common shares outstanding during the period. Dilutive common shares that may be issued by the Company represent unvested stock awards subject to a service or performance condition.  Earnings per common share have been computed based on the following calculation of weighted average shares outstanding :    Year Ended December 31,  2017 2016 2015   Average common shares outstanding 28,056,588 23,267,108 21,065,590  Effect of dilutive unvested stock grants (1) 287,099 292,839 206,746  Average shares outstanding for calculated  diluted earnings per common share 28,343,687 23,559,947 21,272,336  _____________  (1) Unvested stock grants representing 434,149 shares at December 31, 2017 had a dilutive impact of 287,099 shares in the diluted earnings per share calculation. Unvested stock grants representing 513,187 shares at December 31, 2016 had a dilutive impact of 292,839 shares in the diluted earnings per share calculation. Unvested stock gr

Business Combination

Business Combination	12 Months Ended
	Dec. 31, 2017
Business Combination [Abstract]
Business Combination	 (3) Business Combinations  On July 18, 2017, the Company entered into an Agreement and Plan of Reorganization (the “Castle Rock Merger Agreement”) with Castle Rock Bank Holding Company (“Castle Rock”), parent company of Castle Rock Bank, a Colorado state chartered bank headquartered in Castle Rock, Colorado whereby Castle Rock would merge into the Company. The transaction closed on October 27, 2017 with an aggregate transaction value of $24,421,000 . The Castle Rock Merger Agreement provided that, subject to certain conditions, Castle Rock shareholders would receive 840,629 shares of Company voting common stock valued at $24,420,000 based on the Company’s closing stock price on October 27, 2017 of $29.05 , in addition to approximately $1,000 in cash paid in lieu of the issuance of fractional shares of Company stock.  On March 16, 2016, the Company entered into an Agreement and Plan of Reorganization (the “Home State Merger Agreement”) with Home State, parent company of Home State Bank, a Colorado state chartered bank headquartered in Loveland, Colorado whereby Home State would merge into the Company. The transaction closed on September 8, 2016 with an aggregate transaction value of $152,478,000 . The Home State Merger Agreement provided that, subject to certain conditions, Home State shareholders would receive 6,533,756 shares of Company voting common stock valued at $117,477,000 based on the Company’s closing stock price on September 8, 2016 of $17.98 , in addition to $35,001,000 in cash.  The Home State and Castle Rock transactions enhanced the Company’s balance sheet liquidity and supported the Company’s objective of serving the banking needs of business and consumer customers in Colorado’s Front Range markets.  Castle Rock’s and Home State’s results of operations subsequent to the respective merger dates have been included in the Company’s results of operations, however, it is impractical to provide separate information on Castle Rock’s or Home State’s revenues and income subsequent to acquisition due to changes in the consolidated balance sheet. Pre-tax merger expenses of $3,587,000 and $6,259,000 were included in the Company’s results of operations for the years ended December 31, 2017 and December 31, 2016, respectively. The pre-tax merger expenses incurred during 2017 were comprised exclusively of expenses recorded in other general and administrative expense, however, pre-tax merger expenses in 2016 consisted of $1,915,000 in salaries and employee benefits expense and $4,344,000 in other general and administrative expense. In addition to pre-tax merger costs recognized as expense, the Company incurred debt-issuance and stock-issuance costs of $830,000 and $834,000 , respectively, during the year ended December 31, 2016. The Company did not incur debt-issuance or stock-issuance costs in association with the Castle Rock transaction. Debt-issuance costs are recorded as a reduction to subordinated debentures and stock-issuance costs are recorded as a reduction to additional paid in capital on the Company’s balance sheet.  Goodwill of $8,702,000 and $56,404,000 , respectively, was recognized in the Castle Rock and Home State transactions. The recognized goodwill represents expected synergies and cost savings resulting from combining the operations of the acquired institutions with those of the Company. Due to the tax-free structure of both transactions, the recognized goodwill was not deductible for tax purposes in either acquisition. The fair values of assets acquired and liabilities assumed at acquisition are subject to measurement period adjustments, should information obtained in a subsequent period shed light on the valuations utilized as of the acquisition date. In the fourth quarter 2016, the receipt of final valuations from the Home State transaction resulted in the reduction in the fair value of acquired assets by $256,000 , with the net impact of these changes offset by a $256,000 increase in goodwill. These adjustments included changes in the acquired fair value of investments, premises and equipment, other assets and liabilities, and the related impact to deferred income taxes. Impacts to income and expense recognized in the fourth quarter 2016 related to adjustments to the fair value of acquired assets and liabilities were not material. The following table summarizes the estimated fair values of the assets acquired and liabilities assumed in the October 27, 2017 transaction with Castle Rock, and reflects all adjustments made to the fair value of the opening balance sheet through December 31, 2017:     Assets acquired:  (In thousands)  Cash and cash equivalents $ 21,717  Securities available for sale 39,670  Bank stocks 705  Net Loans 71,052  Premises and equipment, net 4,184  Other real estate owned 761  Goodwill 8,702  Other intangible assets, net 1,870  Bank owned life insurance 3,371  Other assets 1,048  Total assets acquired 153,080   Liabilities assumed:  Deposits 128,450  Other liabilities 209  Total liabilities assumed 128,659  Net Assets Acquired $ 24,421   The following table summarizes the estimated fair values of the assets acquired and liabilities assumed in the September 8, 2016 transaction with Home State, and reflects all adjustments made to the fair value of the opening balance sheet through December 31, 2017:      Assets acquired:  (In thousands)  Cash and cash equivalents $ 11,849  Time deposits with banks 504  Securities available for sale 396,450  Securities held to held maturity 850  Bank stocks 1,477  Net Loans 445,529  Premises and equipment, net 22,950  Other real estate owned 45  Goodwill 56,404  Other intangible assets, net 11,701  Other assets 8,118  Total assets acquired 955,877   Liabilities assumed:  Deposits 769,709  Securities sold under agreement to repurchase and federal funds purchased 19,985  Federal Home Loan Bank term notes 2,525  Federal Home Loan Bank line of credit borrowing 2,052  Other liabilities 9,128  Total liabilities assumed 803,399  Net Assets Acquired $ 152,478    The fair value of net assets acquired includes fair value adjustments to certain loans that were considered impaired as of the acquisition date. The fair value adjustments were determined using discounted expected cash flows. Acquired loans that evidence credit deterioration since origination, for which the acquirer does not expect to collect all contractual cash flows, are designated as PCI upon acquisition. The gross contractual amount of loans identified as PCI as of the acquisition date totaled $1,644,000 in the Castle Rock transaction and $2,834,000 in the Home State transaction. Contractual cash flows not expected to be collected as of acquisition date on these PCI loans totaled $320,000 in the Castle Rock transaction and $531,000 in the Home State transaction. Additionally, Castle Rock and Home State PCI loans had an interest rate fair value adjustment of $41,000 and $195,000 , respectively, bringing the net fair value of acquired PCI loans to $1,283,000 in the Castle Rock transaction and $2,108,000 in the Home State transaction. The cash flows on the Company’s PCI loans cannot be reliably estimated and as a result these loans have been designated as nonaccrual. Loans that were not designated PCI in the Castle Rock transaction had a fair value and contractual balance of $69,769,000 and $72,220,000 as of October 27, 2017. Loans that were not designated PCI in the Home State transaction had a fair value and contractual balance of $443,421,000 and $458,014,000 as of September 8, 2016. The credit component of the fair value adjustment on non-PCI loans as of acquisition totaled $1,494,000 and $8,358,000 in the Castle Rock and Home State transactions representing 2.1% and 1.8% of their respective contractual balances. No allowance for loan losses related to acquired loans was brought over as a result of either the Castle Rock or Home State transaction.  The composition of Castle Rock’s portfolio as of October 27, 2017 is detailed in the table below:     October 27,  2017  (In thousands)  Commercial and residential real estate $ 51,531  Construction 6,337  Commercial 5,666  Agricultural 3,735  Consumer 3,783  Total gross loans 71,052   The composition of Home State’s portfolio as of September 8, 2016 is detailed in the table below:     September 8,  2016  (In thousands)  Commercial and residential real estate $ 294,069  Construction 39,947  Commercial 45,996  Agricultural 7,906  Consumer 16,460  SBA 25,227  Other 15,924  Total gross loans 445,529   The following tables present unaudited pro-forma financial information as if the Castle Rock transaction occurred as of January 1, 2016. The unaudited pro-forma information includes adjustments for interest income on loans and securities acquired, amortization of intangibles arising from the transaction and the related tax effects. The unaudited pro forma financial information has been adjusted to exclude nonrecurring expenses related to the Castle Rock transaction. The pro forma financial information is not necessarily indicative of the results of operations that would have occurred had the transactions been effected on January 1, 2016 .      Year Ended December 31,  2017 2016  UNAUDITED (Dollars in thousands, except per share data)   Net interest income $ 125,203 $ 95,889  Noninterest income 25,952 19,918  Net income 42,178 26,710   Earnings per common share-basic: $ 1.47 $ 1.11  Earnings per common share-diluted: $ 1.45 $ 1.09  Unaudited pro forma net income for 2017 excludes $3,587,000 in merger-related expenses incurred by the Company and $139,000 in merger-related expenses incurred by Castle Rock during the year ended December 31, 2017. These expenses were excluded since they were nonrecurring in nature and directly attributable to the transaction. For the year ended December 31, 2016, no merger-related expense adjustments were made to pro forma income. Adjustment of net interest income and noninterest income for nonrecurring income or expense directly related to the acquisition was not necessary for the years ending December 31, 2017 and December 31, 2016.

Securities

Securities	12 Months Ended
	Dec. 31, 2017
Securities [Abstract]
Securities	(4) Securities  The fair value of available for sale debt securities and the related gross unrealized gains and losses recognized in accumulated other comprehensive income (loss)(“AOCI”) were as follows as of the dates presented :      December 31, 2017  Fair Value Gross Unrealized Gains Gross Unrealized Losses Amortized Cost  (In thousands)  Securities available for sale:  State and municipal $ 82,486 $ 530 $ (1,224) $ 83,180  Mortgage-backed - agency / residential 131,180 133 (3,069) 134,116  Corporate 103,512 546 (1,320) 104,286  Collateralized loan obligations 12,799 17 (51) 12,833  Total securities available for sale $ 329,977 $ 1,226 $ (5,664) $ 334,415      December 31, 2016  Fair Value Gross Unrealized Gains Gross Unrealized Losses Amortized Cost  (In thousands)  Securities available for sale:  State and municipal $ 81,608 $ 91 $ (2,542) $ 84,059  Mortgage-backed - agency / residential 129,832 347 (3,117) 132,602  Mortgage-backed - private / residential 265 - (6) 271  Corporate 86,246 288 (1,357) 87,315  Collateralized loan obligations 26,277 50 (66) 26,293  Total securities available for sale $ 324,228 $ 776 $ (7,088) $ 330,540  During the fourth quarter 2016, the Company reclassified, at fair value, approximately $63,432,000 in available for sale municipal bonds, asset-backed securities and mortgage backed securities to the held to maturity category, primarily to limit future volatility in equity due to potential increases in interest rates. The related unrealized pre-tax losses of approximately $ 828,000 remained in accumulated other comprehensive income (loss) and will be amortized over the remaining life of the securities, offsetting the related accretion of discount on the transferred securities. No gains or losses were recognized at the time of reclassification. No transfers of securities occurred in 2017.  During the first quarter 2015, the Company reclassified, at fair value, approximately $49,084,000 in available for sale mortgage-backed, asset-backed and municipal securities to the held to maturity category, primarily to limit future volatility in equity due to potential increases in interest rates . The related unrealized pre-tax losses of approximately $750,000 remained in accumulated other comprehensive income (loss) and will continue to be amortized over the remaining life of the securities. No gains or losses were recognized at the time of reclassification.  The carrying amount, unrecognized gains/losses and fair value of securities held to maturity were as follows as of the dates presented:      Fair Value Gross Unrecognized Gains Gross Unrecognized Losses Amortized Cost  (In thousands)  December 31, 2017:  State and municipal $ 136,490 $ 1,121 $ (1,530) $ 136,899  Mortgage-backed - agency / residential 103,925 315 (2,088) 105,698  Asset-backed 16,050 7 (76) 16,119  Other 1,200 - - 1,200  $ 257,665 $ 1,443 $ (3,694) $ 259,916   December 31, 2016:  State and municipal $ 118,734 $ 745 $ (3,120) $ 121,109  Mortgage-backed - agency / residential 100,565 507 (2,590) 102,648  Asset-backed 18,905 9 (126) 19,022  Other 1,200 - - 1,200  $ 239,404 $ 1,261 $ (5,836) $ 243,979  The proceeds from sales and calls of securities and the associated gains are listed below:      Year Ended December 31,  2017 2016 2015   (In thousands)  Proceeds $ 80,027 $ 370,111 $ 27,985  Gross gains 334 2,486 217  Gross losses (340) (2,608) (85)  Net tax (benefit) expense related to  gains (losses) on sale (2) (46) 50   The amortized cost and estimated fair value of available for sale and held to maturity debt securities by contractual maturity at December 31, 2017 are shown below. Expected maturities will differ from contractual maturities because borrowers may have the right to prepay obligations with or without prepayment penalties. Securities not due at a single maturity date are presented separately.      Available for Sale  December 31, 2017 Fair Value Amortized Cost  (In thousands)  Securities available for sale:  Due in one year or less $ 6,058 $ 6,041  Due after one year through five years 18,956 18,949  Due after five years through ten years 105,554 107,156  Due after ten years 55,430 55,320  Total AFS, excluding mortgage-backed (MBS)  and collateralized loan obligations 185,998 187,466  Mortgage-backed and collateralized  loan obligations 143,979 146,949  Total securities available for sale $ 329,977 $ 334,415       Held to Maturity  December 31, 2017 Fair Value Amortized Cost  (In thousands)  Securities held to maturity:  Due in one year or less $ 1,524 $ 1,504  Due after one year through five years 15,672 15,699  Due after five years through ten years 74,774 75,282  Due after ten years 45,720 45,614  Total HTM, excluding MBS and asset-backed 137,690 138,099  Mortgage-backed and asset-backed 119,975 121,817  Total securities held to maturity $ 257,665 $ 259,916    Securities with carrying values of $219,621,000 and $237,036,000 were pledged at December 31, 2017 and December 31, 2016, respectively, as collateral for various lines of credit, public deposits and for other purposes as required or permitted by law. Fluctuations in the fair value of these securities, and/or the fluctuation in public deposits or customer repurchase agreement balances, may result in the need to pledge additional securities against these borrowings. Management monitors the Bank’s collateral position with respect to public deposits and repurchase agreement borrowings on a daily basis. At December 31, 2017, approximately $367,587,000 of securities were unpledged. At December 31, 2016, approximately $328,946,000 of securities were unpledged.  The following table presents the fair value and the unrealized loss on securities that were temporarily impaired as of December 31, 2017, aggregated by major security type and length of time in a continuous unrealized loss position:      December 31, 2017 Less than 12 Months 12 Months or More Total  Fair Value Unrealized Losses Fair Value Unrealized Losses Fair Value Unrealized Losses   (In thousands)  Description of securities:  Available for sale:  State and municipal $ 8,710 $ (82) $ 36,894 $ (1,142) $ 45,604 $ (1,224)  Mortgage-backed - agency /  residential 43,494 (315) 77,909 (2,754) 121,403 (3,069)  Corporate 38,267 (567) 23,731 (753) 61,998 (1,320)  Collateralized loan obligations 4,532 (13) 3,011 (38) 7,543 (51)   Held to maturity:  State and municipal 18,521 (167) 69,314 (2,057) 87,835 (2,224)  Mortgage-backed - agency /  residential 19,721 (162) 78,472 (2,685) 98,193 (2,847)  Asset-backed - - 16,051 (448) 16,051 (448)  Total temporarily impaired $ 133,245 $ (1,306) $ 305,382 $ (9,877) $ 438,627 $ (11,183)  The table above presents unrealized losses on held to maturity securities since the date of the securities purchase, independent of the impact associated with changes in cost basis upon transfer from available for sale to held to maturity.  In determining whether or not there is an OTTI for a security, management considers many factors, including: (i) the length of time for which and the extent to which the security’s fair value has been less than cost, (ii) the financial condition and near-term prospects of the security’s issuer, (iii) whether the decline in the security’s value was affected by macroeconomic conditions, and (iv) whether the Company intends to sell the security and whether it is more likely than not that the Company will be required to sell the security before a recovery in its fair value. The assessment of whether an OTTI exists involves a high degree of subjectivity and judgment and is based on the information available to management at a particular point in time. T here were no accumulated credit losses on any of the Company’s securities as of December 31, 2017.  At December 31, 2017, there were 255 individual securities in an unrealized loss position, including 194 individual securities that had been in a continuous unrealized loss position for 12 months or longer. Management has evaluated these securities in addition to the remaining 61 securities in an unrealized loss position and has determined that the decline in value since their purchase dates was primarily attributable to fluctuations in market interest rates and does not reflect a decline in the underlying issuers’ ability to repay. Management determined that the increase in the number of securities in an unrealized loss position in excess of 12 months from 10 securities at December 31, 201 6 to 194 securities at December 31, 2017 was primarily attributable to the increase in securities resulting from the Home State transaction in addition to the timing of interest rate fluctuations. The total number of securities in an unrealized loss position decreased from 271 individual securities at December 31, 2016 to 255 securities at December 31, 2017. At December 31, 2017, the Company did not intend to sell, and did not consider it likely that it would be required to sell, any of these securities prior to recovery in their fair value.  The Company’s unrated and rated municipal bond securities, along with the Company’s other rated investment securities, are subject to an annual internal review process that management has historically performed in the fourth quarter. The review process includes a review of the securities’ issuers’ most recent financial statements, including an evaluation of the expected sufficiency of the issuers’ cash flows relative to their debt service requirements. In addition, management considers any interim information made available to it that would prompt the need for more frequent review. At December 31, 2017 and December 31, 2016, the Company’s unrated municipal bonds comprised approximately 4.4% and 5.0% , respectively, of the carrying value of the Company’s entire municipal bond portfolio. The following table presents the fair value and the unrealized loss on securities that were temporarily impaired as of December 31, 2016, aggregated by major security type and length of time in a continuous unrealized loss position:     December 31, 2016 Less than 12 Months 12 Months or More Total  Fair Value Unrealized Losses Fair Value Unrealized Losses Fair Value Unrealized Losses   (In thousands)  Description of securities:  Available for sale:  State and municipal $ 47,434 $ (2,542) $ - $ - $ 47,434 $ (2,542)  Mortgage-backed - agency /  residential 93,909 (2,782) 9,526 (335) 103,435 (3,117)  Mortgage-backed - private /  residential 265 (6) - - 265 (6)  Corporate 49,964 (1,042) 5,685 (315) 55,649 (1,357)  Collateralized loan obligations 9,077 (17) 5,488 (49) 14,565 (66)   Held to maturity:  State and municipal 90,959 (3,804) 596 (259) 91,555 (4,063)  Mortgage-backed - agency /  residential 99,920 (3,442) - - 99,920 (3,442)  Asset-backed 15,690 (542) 3,216 (98) 18,906 (640)  Total temporarily impaired $ 407,218 $ (14,177) $ 24,511 $ (1,056) $ 431,729 $ (15,233)  At December 31, 2016, there were 271 individual securities in an unrealized loss position, including 10 individual securities that had been in a continuous unrealized loss position for 12 months or longer. Management evaluated these securities in addition to the remaining 261 securities in an unrealized loss position and determined that the decline in value since their purchase dates was primarily attributable to fluctuations in market interest rates and did not reflect a decline in the underlying issuers’ ability to repay. At December 31, 2016, the Company did not intend to sell, and did not consider it likely that it would be required to sell, any of these securities prior to recovery in their fair value.

Bank Stocks

Bank Stocks	12 Months Ended
	Dec. 31, 2017
Bank Stocks [Abstract]
Bank Stocks	 (5) Bank Stocks  The Bank is a member of both the Federal Reserve Bank of Kansas City and the Federal Home Loan Bank of Topeka and is required to maintain an investment in the capital stock of each. The Federal Reserve, Federal Home Loan Bank and other bank stocks are restricted in that they can only be redeemed by the issuer at par value. The Company’s investments in these instruments at December 31, 2017 and December 31, 2016 were as follows:       2017 2016   (In thousands)  Federal Reserve Bank of Kansas City $ 12,495 $ 12,104  Federal Home Loan Bank of Topeka 10,235 8,895  Other bank stocks securities 1,689 1,650  Totals $ 24,419 $ 22,649 

Loans

Loans	12 Months Ended
	Dec. 31, 2017
Loans [Abstract]
Loans	(6) Loans A summary of loans held for investment by loan type is included in the following table:      December 31, December 31,  2017 2016   (In thousands)  Commercial and residential real estate $ 1,977,431 $ 1,768,424  Construction 99,965 88,451  Commercial 523,355 461,666  Agricultural 16,995 16,690  Consumer 143,066 125,264  SBA 44,121 52,380  Other 866 2,195  Total gross loans 2,805,799 2,515,070  Deferred (fees) and costs (136) (61)  Loans, held for investment, net 2,805,663 2,515,009  Less allowance for loan losses (23,250) (23,250)  Net loans, held for investment $ 2,782,413 $ 2,491,759  During 2017, excluding the Castle Rock transaction, the Company purchased $98,940,000 in performing loans, included in our commercial and residential real estate, commercial and consumer loan portfolio segments. In comparison, during 2016, excluding the Home State transaction, the Company purchased $109,519,000 in performing loans included in our commercial and residential real estate and consumer loan portfolio segments.  Activity in the allowance for loan losses for the periods indicated is as follows:      Year Ended December 31,  2017 2016 2015   (In thousands)  Balance, beginning of period $ 23,250 $ 23,000 $ 22,490  Provision for loan losses 992 143 96  Loans charged-off (1,550) (721) (238)  Recoveries on loans previously  charged-off 558 828 652  Balance, end of period $ 23,250 $ 23,250 $ 23,000   The Company’s additional disclosures relating to loans and the allowance for loan losses are broken out into two subsets, portfolio segment and class. The portfolio segment level is defined as the level where financing receivables are aggregated in developing the Company’s systematic method for calculating its allowance for loan losses. The class level is the second level at which credit information is presented and represents the categorization of financing related receivables at a slightly less aggregated level than the portfolio segment level. Because data presented according to class is dependent upon the underlying purpose of the loan, whereas loan data organized by portfolio segment is determined by the loan’s underlying collateral, disclosures broken out by portfolio segment versus class may not be in agreement. The disclosures in this footnote include both non-PCI and PCI loans. As of December 31, 2017, PCI loans acquired in the Castle Rock and Home State transactions are not considered material and as a result separate PCI disclosures are not included.  The following tables provide detail for the ending balances in the Company’s allowance for loan losses and loans held for investment, broken down by portfolio segment as of December 31, 2017 and December 31, 2016. In addition, the table also provides a rollforward by portfolio segment of the allowance for loan losses for the years ended December 31, 2017, December 31, 2016 and December 31, 2015. The detail provided for the amount of the allowance for loan losses and loans individually versus collectively evaluated for impairment (i.e., the specific component versus the general component of the allowance for loan losses) corresponds to the Company’s systematic methodology for estimating its allowance for loan losses.    Real Estate Consumer and Installment Commercial and Other Total  (In thousands)  Allowance for Loan Losses  Balance as of January 1, 2015 $ 19,607 $ 39 $ 2,844 $ 22,490  Charge-offs (21) (12) (205) (238)  Recoveries 284 29 339 652  Provision (credit) 436 15 (355) 96  Balance as of December 31, 2015 $ 20,306 $ 71 $ 2,623 $ 23,000   Balance as of January 1, 2016 $ 20,306 $ 71 $ 2,623 $ 23,000  Charge-offs (217) (51) (453) (721)  Recoveries 340 14 474 828  Provision (credit) (347) 71 419 143  Balance as of December 31, 2016 $ 20,082 $ 105 $ 3,063 $ 23,250   Balance as of January 1, 2017 $ 20,082 $ 105 $ 3,063 $ 23,250  Charge-offs (386) (106) (1,058) (1,550)  Recoveries 132 91 335 558  Provision (credit) (1,283) 220 2,055 992  Balance as of December 31, 2017 $ 18,545 $ 310 $ 4,395 $ 23,250           Balances at December 31, 2017:   Allowance for Loan Losses  Individually evaluated $ 1 $ - $ 1,121 $ 1,122  Collectively evaluated 18,544 310 3,274 22,128  Total $ 18,545 $ 310 $ 4,395 $ 23,250   Loans  Individually evaluated $ 11,256 $ 1 $ 12,363 $ 23,620  Collectively evaluated 2,225,944 74,675 481,424 2,782,043  Total $ 2,237,200 $ 74,676 $ 493,787 $ 2,805,663      Balances at December 31, 2016:   Allowance for Loan Losses  Individually evaluated $ 29 $ - $ 193 $ 222  Collectively evaluated 20,053 105 2,870 23,028  Total $ 20,082 $ 105 $ 3,063 $ 23,250   Loans  Individually evaluated $ 22,728 $ 2 $ 7,645 $ 30,375  Collectively evaluated 2,024,524 55,182 404,928 2,484,634  Total $ 2,047,252 $ 55,184 $ 412,573 $ 2,515,009   The following tables provide additional detail with respect to impaired loans broken out according to class as of the dates indicated. The recorded investment included in the following table represents customer balances net of any partial charge-offs recognized on the loans, net of any deferred fees and costs. The unpaid balance represents the recorded balance prior to any partial charge-offs. Interest income recognized may exclude an immaterial amount of interest income on matured loans that are 90 days or more past due, but that are in the process of being renewed and thus are still accruing.      December 31, 2017 Recorded Investment Unpaid Balance Related Allowance Average Recorded Investment YTD Interest Income Recognized YTD  (In thousands)  Impaired loans with no related allowance:  Commercial and residential real estate $ 9,981 $ 10,705 $ - $ 16,166 $ 2,052  Construction - - - - -  Commercial 1,006 1,553 - 886 195  Consumer 367 425 - 88 -  Other 2,233 2,838 - 1,066 62  Total $ 13,587 $ 15,521 $ - $ 18,206 $ 2,309   Impaired loans with a related allowance:  Commercial and residential real estate $ 46 $ 157 $ 1 $ 779 $ -  Construction - - - - -  Commercial 9,807 9,899 1,120 5,262 447  Consumer 180 214 1 329 18  Other - - - 635 6  Total $ 10,033 $ 10,270 $ 1,122 $ 7,005 $ 471   Total impaired loans:  Commercial and residential real estate $ 10,027 $ 10,862 $ 1 $ 16,945 $ 2,052  Construction - - - - -  Commercial 10,813 11,452 1,120 6,148 642  Consumer 547 639 1 417 18  Other 2,233 2,838 - 1,701 68  Total impaired loans $ 23,620 $ 25,791 $ 1,122 $ 25,211 $ 2,780       December 31, 2016 Recorded Investment Unpaid Balance Related Allowance Average Recorded Investment YTD Interest Income Recognized YTD  (In thousands)  Impaired loans with no related allowance:  Commercial and residential real estate $ 20,477 $ 21,140 $ - $ 13,875 $ 1,911  Construction - - - 592 -  Commercial 222 229 - 243 16  Consumer 18 19 - 117 2  Other 817 1,625 - 493 -  Total $ 21,534 $ 23,013 $ - $ 15,320 $ 1,929   Impaired loans with a related allowance:  Commercial and residential real estate $ 1,767 $ 1,890 $ 19 $ 8,590 $ 44  Construction - - - - -  Commercial 6,371 6,423 155 2,937 309  Consumer 306 383 9 389 9  Other 397 444 39 348 -  Total $ 8,841 $ 9,140 $ 222 $ 12,264 $ 362   Total impaired loans:  Commercial and residential real estate $ 22,244 $ 23,030 $ 19 $ 22,465 $ 1,955  Construction - - - 592 -  Commercial 6,593 6,652 155 3,180 325  Consumer 324 402 9 506 11  Other 1,214 2,069 39 841 -  Total impaired loans $ 30,375 $ 32,153 $ 222 $ 27,584 $ 2,291   The following tables summarize by class loans classified as past due in excess of 30 days or more in addition to those loans classified as nonaccrual:     December 31, 2017 30-89 Days Past Due 90 Days + Past Due and Still Accruing Nonaccrual Total Nonaccrual and Past Due Total Loans, Held for Investment  (In thousands)  Commercial and residential  real estate $ 410 $ - $ 1,750 $ 2,160 $ 1,977,335  Construction - - - - 99,960  Commercial 1,663 - 2,079 3,742 523,330  Consumer 469 - 444 913 143,059  Other 327 - 1,281 1,608 61,979  Total $ 2,869 $ - $ 5,554 $ 8,423 $ 2,805,663      December 31, 2016 30-89 Days Past Due 90 Days + Past Due and Still Accruing Nonaccrual Total Nonaccrual and Past Due Total Loans, Held for Investment  (In thousands)  Commercial and residential  real estate $ 1,258 $ - $ 2,835 $ 4,093 $ 1,768,381  Construction - - - - 88,449  Commercial 37 - 1,094 1,131 461,655  Consumer 42 - 201 243 125,261  Other - - 1,117 1,117 71,263  Total $ 1,337 $ - $ 5,247 $ 6,584 $ 2,515,009  If nonaccrual loans outstanding during 2017, 2016 and 2015 had been current in accordance with their original terms, $252,000 , $257,000 and $586,000 would have been recorded in incremental gross interest income during 2017, 2016 and 2015, respectively. The income recognized on nonaccrual loans prior to impairment during 2017, 2016 and 2015 was $93,000 , $163,000 and $90,000 respectively. During 2016 and 2015, $332,000 and $118,000 of cash basis interest income was recognized on a nonaccrual loan that was moved to accruing status in the third quarter of 2016; no cash basis interest income was recognized on nonaccrual loans in 2017. With the exception of cash basis interest income, the $2,780,000 and $2,291,000 in interest income recognized on impaired loans during 2017 and 2016, respectively, is primarily comprised of interest income recognized on performing TDRs.  The Company categorizes loans into risk categories based on relevant information about the ability of a particular borrower to service its debt, such as: current financial information, historical payment experience, credit documentation, public information, and current economic trends, among other factors. The Company uses the following definitions for risk ratings, which are consistent with the definitions used in supervisory guidance:  Substandard . Loans classified as substandard are inadequately protected by the current net worth and paying capacity of the obligor or of the collateral, if any, pledged to secure the loan. Loans so classified have a well-defined weakness or weaknesses that jeopardize the collection of the debt. They are characterized by the distinct possibility that the Company will sustain some loss if the deficiencies are not corrected.  Doubtful . Loans classified as doubtful have all the weaknesses inherent in those classified as substandard, with the added characteristic that the weaknesses make collection or liquidation in full, on the basis of currently existing facts, conditions, and values, highly questionable and improbable.  Loans not meeting the criteria above are considered to be non-classified loans.  The following tables provide detail for the risk categories of loans by class of loans based on the most recent credit analysis performed as of the dates indicated:      December 31, 2017 Commercial & Residential Real Estate Construction Commercial Consumer Other Total  (In thousands)  Non-classified $ 1,964,934 $ 99,965 $ 513,563 $ 142,512 $ 57,256 $ 2,778,230  Substandard 12,497 - 9,792 554 4,726 27,569  Doubtful - - - - - -  Subtotal 1,977,431 99,965 523,355 143,066 61,982 2,805,799  Deferred fees and costs (96) (5) (25) (7) (3) (136)  Loans, held for investment, net $ 1,977,335 $ 99,960 $ 523,330 $ 143,059 $ 61,979 $ 2,805,663      December 31, 2016 Commercial & Residential Real Estate Construction Commercial Consumer Other Total  (In thousands)  Non-classified $ 1,742,974 $ 88,451 $ 456,861 $ 124,932 $ 68,978 $ 2,482,196  Substandard 25,450 - 4,805 332 2,287 32,874  Doubtful - - - - - -  Subtotal 1,768,424 88,451 461,666 125,264 71,265 2,515,070  Deferred fees and costs (43) (2) (11) (3) (2) (61)  Loans, held for investment, net $ 1,768,381 $ 88,449 $ 461,655 $ 125,261 $ 71,263 $ 2,515,009  The book balance of TDRs at December 31, 2017 and December 31, 2016 was $ 19,256,000 and $ 25,219,000 , respectively. Management established approximately $53,000 and $ 74,000 in specific reserves with respect to these loans as of December 31, 2017 and December 31, 2016. At December 31, 2017, the Company had an additional $ 4,181,000 committed on loans classified as troubled debt restructurings. At December 31, 2016, the Company had an additional $2,238,000 committed on loans classified as troubled debt restructurings.  During the year ended December 31, 2017, the terms of 33 loans totaling $12,062,000 were modified in troubled debt restructurings. The modification of the terms of such loans included 19 restructurings of payment terms and 14 loan renewals with terms more favorable to the borrowers than would otherwise be available based on the borrower’s financial strength. As a result of these modifications, the Company did not recognize any additional charge-offs during 2017.  During the year ended December 31, 2016, the terms of 19 loans totaling $7,765,000 were modified in troubled debt restructurings. The modification of the terms of such loans included 10 restructurings of payment terms and nine loan renewals with terms more favorable to the borrowers than would otherwise be available based on the borrower’s financial strength. As a result of these modifications, the Company did not recognize any additional charge-offs during 2016.  The following tables present loans by class modified as troubled debt restructurings that occurred during the years indicated:      Year Ended December 31, 2017:  Troubled Debt Restructurings Number of Loans Pre-Modification Outstanding Recorded Investment Post-Modification Outstanding Recorded Investment   (In thousands)  Commercial and residential  real estate 12 $ 2,935 $ 2,935  Construction - - -  Commercial 15 7,991 7,991  Consumer 1 51 51  Other 5 1,085 1,085  Total 33 $ 12,062 $ 12,062        Year Ended December 31, 2016:  Troubled Debt Restructurings Number of Loans Pre-Modification Outstanding Recorded Investment Post-Modification Outstanding Recorded Investment   (In thousands)  Commercial and residential  real estate 2 $ 1,018 $ 1,018  Construction - - -  Commercial 16 6,650 6,650  Consumer - - -  Other 1 97 97  Total 19 $ 7,765 $ 7,765   A TDR loan is considered to be in payment default once it is 90 days contractually past due under the modified terms. No TDRs defaulted during the years ended December 31, 2017 or December 31, 2016.

Premises And Equipment

Premises And Equipment	12 Months Ended
	Dec. 31, 2017
Premises And Equipment [Abstract]
Premises And Equipment	 (7) Premises and Equipment  A summary of the cost and accumulated depreciation and amortization of premises and equipment at December 31 is as follows:      2017 2016   (In thousands)  Land $ 15,354 $ 16,826  Buildings 59,060 58,637  Leasehold improvements 3,790 3,691  Equipment and Software 17,506 16,553  Leasehold interest in land 684 684  Subtotal $ 96,394 $ 96,391  Accumulated depreciation and amortization (30,520) (29,001)  Total premises and equipment $ 65,874 $ 67,390 Depreciation expense for the years ended December 31, 2017, 2016 and 2015 was approximately $2,971,000 , $2,713,000 and $2,747,000 , respectively. Such amounts are classified in occupancy and furniture and equipment expense.  Operating Leases: Pursuant to the terms of non-cancelable lease agreements in effect at December 31, 2017 pertaining to banking premises, future minimum rent commitments under various operating leases are as follows (in thousands):       2018 $ 1,721  2019 1,698  2020 1,724  2021 1,664  2022 1,316  Thereafter 3,407  $ 11,530  Certain leases contain options to extend the lease terms for five to twenty-one years. The cost of such extensions is not included in the above rental commitments. Rent expense for the years ended December 31, 2017, 2016 and 2015 was $1,704,000, $1,849,000 and $2,213,000 , respectively.

Goodwill And Other Intangible A

Goodwill And Other Intangible Assets	12 Months Ended
	Dec. 31, 2017
Goodwill And Other Intangible Assets [Abstract]
Goodwill And Other Intangible Assets	 (8) Goodwill and Other Intangible Assets  The Company recognized $8,702,000 in goodwill as a result of the Castle Rock transaction on October 27, 2017 and $56,404,000 in goodwill as a result of the Home State transaction on September 8, 2016.  Other intangible assets with finite lives are amortized over their respective estimated useful lives to their estimated residual values. As of December 31, 2017, the Company had intangible assets comprised of its core deposit intangible assets and customer relationship intangible assets.  The following table presents the gross amounts of core deposit intangible assets and customer relationship intangible assets and the related accumulated amortization at the dates indicated:     December 31,  Useful Life 2017 2016   (In thousands)  Core deposit intangible assets 10 - 15 years $ 75,956 $ 74,087  Core deposit intangible assets accumulated amortization (65,272) (63,112)  Core deposit intangible assets, net $ 10,684 $ 10,975   Customer relationship intangible assets 10 years 6,243 6,243  Customer relationship intangible assets accumulated amortization (2,486) (1,901)  Customer relationship intangible assets, net $ 3,757 $ 4,342   Total other intangible assets, net $ 14,441 $ 15,317  Amortization expense for the years ended December 31, 2017, 2016 and 2015 was $2,745,000 , $1,557,000 and $1,981,000 , respectively. Estimated amortization expense for the next five years, and thereafter, is as follows (in thousands):      Total  Fiscal year ending:  2018 $ 2,705  2019 2,188  2020 1,935  2021 1,795  2022 1,597  Thereafter 4,221  $ 14,441  

Deposits

Deposits	12 Months Ended
	Dec. 31, 2017
Deposits [Abstract]
Deposits	(9) Deposits  The aggregate amount of time deposits in denominations of $250,000 or more at December 31, 2017 and December 31, 2016 was $88,449,000 and $56,018,000 , respectively.  At December 31, 2017 and December 31, 2016, the Bank had $95,299,000 and $94,338,000 , respectively, in brokered time deposits. At December 31, 2017 and December 31, 2016, the Bank had $25,035,000 and $15,006,000 , respectively, in brokered money market accounts. Reciprocal time deposits at December 31, 2016 were $1,206,000 . There were no reciprocal time deposits at December 31, 2017 .  At December 31, 2017, the scheduled maturities of time deposits are as follows (amounts in thousands):       2018 $ 339,410  2019 81,482  2020 21,279  2021 8,983  2022 7,733  $ 458,887 

Securities Sold Under Agreement

Securities Sold Under Agreements To Repurchase	12 Months Ended
	Dec. 31, 2017
Securities Sold Under Agreements To Repurchase [Abstract]
Securities Sold Under Agreements to Repurchase	 (10) Securities Sold Under Agreements to Repurchase  The following is a summary of information pertaining to securities sold under agreement to repurchase at December 31:      2017 2016   (Dollars in thousands)  Ending Balance $ 44,746 $ 36,948  Weighted-average interest rate at year-end 0.20 % 0.19 %  Securities sold under agreements to repurchase, which are classified as secured borrowings, generally mature within one to four days from the transaction date. Securities sold under agreements to repurchase are reflected at the amount of cash received in connection with the transaction. The Company may be required to provide additional collateral based on the fair value of the underlying security. The securities sold under agreements to repurchase are collateralized by government agency and mortgage-backed securities held by the Company, which had carrying values of $57,183,000 and $42,825,000 at December 31, 2017 and December 31, 2016, respectively.  Information concerning securities sold under agreements to repurchase is summarized below:      Year Ended December 31,  2017 2016 2015   (Dollars in thousands)  Average daily balance during the year $ 37,332 $ 25,221 $ 24,531  Average interest rate during the year 0.19 % 0.21 % 0.18 %  Maximum month-end balance during the year $ 48,391 $ 38,089 $ 31,977 

Borrowings

Borrowings	12 Months Ended
	Dec. 31, 2017
Borrowings [Abstract]
Borrowings	(11) Borrowings  A summary of borrowings is as follows:      Principal Interest Rate Maturity Date Total Committed  (Dollars in thousands)  December 31, 2017  Short-term borrowings:  FHLB line of credit $ 157,444 1.47% overnight $ 706,251  Total short-term borrowings $ 157,444   Long-term borrowings:  FHLB term notes (fixed rate) 20,000 2.52% January 23, 2018 See below  FHLB term notes (variable rate) 25,000 1.48% March 7, 2018 See below  FHLB term notes (variable rate) 25,000 1.45% August 3, 2018 See below  Total long-term borrowings $ 70,000   Total borrowings $ 227,444   December 31, 2016  Short-term borrowings:  FHLB line of credit $ 124,691 0.72% overnight $ 597,202  Total short-term borrowings $ 124,691   Long-term borrowings:  FHLB term notes (fixed rate) 22,477 Range: 2.52% - 6.38% 2017 - 2018 See below  FHLB term notes (variable rate) 25,000 1.15% March 7, 2017 See below  FHLB term notes (variable rate) 25,000 0.96% August 4, 2017 See below  Total long-term borrowings $ 72,477   Total borrowings $ 197,168   At December 31, 2017, the Company’s outstanding borrowings were $ 227,444,000 compared to $ 197,168,000 at December 31, 2016. These borrowings at December 31, 2017 consisted of $70,000,000 of term notes and $157,444,000 of advances on our line of credit, both with the Federal Home Loan Bank (the “FHLB”). At December 31, 2016, outstanding borrowings consisted of $72,477,000 of term notes and $124,691,000 of advances on our line of credit, both with the FHLB.  The interest rate on the line of credit varies with the federal funds rate, and was 1.47 % at December 31, 2017. The Company has three term notes with the FHLB. The first fixed-rate term note of $20,000,000 with an interest rate of 2.52% matured on January 23, 2018 . The note had a prepayment penalty if paid prior to maturity and was convertible to floating rate on predetermined conversion dates at the discretion of the FHLB. If the note was converted by the FHLB, the Bank had the option to prepay the note without penalty. Additionally, the Company has two $25,000,000 variable rate term notes that mature on March 7, 2018 and August 3, 2018 and carry an interest rate that resets quarterly. As of December 31, 2017, the rates on our variable rate term notes were set at 1.48% and 1.45% .  The Company has an advance, pledge and security agreement with the FHLB and had pledged qualifying loans and securities in the amount of $ 706,251,000 at December 31, 2017 and $ 597,202,000 at December 31, 2016. The maximum credit allowance for future borrowings, including term notes and advances on the line of credit, was $ 477,474,000 at December 31, 2017 and $ 400,102,000 at December 31, 2016.  The Company had additional availability with correspondent banks of $62,400,000 and $64,005,000 at December 31, 2017 and December 31, 2016, respectively.  Information concerning borrowings on the FHLB line of credit is summarized below:       Year Ended December 31,  2017 2016 2015   (Dollars in thousands)  Average daily balance during the year $ 73,042 $ 81,539 $ 130,152  Average interest rate during the year 0.99 % 0.55 % 0.28 %  Maximum month-end balance during the year $ 157,444 $ 185,700 $ 212,065 

Income Taxes

Income Taxes	12 Months Ended
	Dec. 31, 2017
Income Taxes [Abstract]
Income Taxes	(12) Income Taxes  The components of the income tax expense (benefit) are as follows:      Year Ended December 31,  2017 2016 2015   (In thousands)  Current tax expense:  Federal $ 15,894 $ 11,921 $ 7,165  State 2,215 427 -  Total current tax expense 18,109 12,348 7,165  Deferred tax expense  Federal 626 (1,026) 3,132  Re-measurement of net deferred tax asset 976 - -  State 121 666 973  Total deferred tax expense (benefit) 1,723 (360) 4,105   Total tax expense $ 19,832 $ 11,988 $ 11,270  Income tax expense attributable to income from continuing operations differed from the amounts computed by applying the U.S. federal statutory tax rate to pretax income from operations as a result of the following:      Year Ended December 31,  2017 2016 2015   Tax expense at statutory federal rate 35.0 % 35.0 % 35.0 %  State tax, net of federal benefit 2.7 % 2.7 % 2.8 %  Tax exempt income (4.8) % (5.1) % (4.4) %  Re-measurement of net deferred tax asset 1.7 % - % - %  related to 2017 Tax Cuts and Jobs Act  Other (0.7) % 0.1 % - %  Effective tax rate 33.9 % 32.7 % 33.4 %   As of December 31, 2017, the Company maintained a current tax receivable of approximately $100,000 compared to current taxes receivable at December 31, 2016 of $2,090,000 . The Company’s net deferred tax asset is included in other assets at December 31, 2017 and December 31, 2016.  On December 22, 2017 President Donald Trump signed into law H.R. 1, commonly referred to as the 2017 Tax Cuts and Jobs Act. Under GAAP, the Company was required to account for the effects of this change in the period of enactment, or 2017. The direct impact to the 2017 financial statements was the re-measurement of the Company’s net deferred tax asset, which resulted in $976,000 in additional income tax expense being recognized in 2017. The impact of this re-measurement is included in the statutory rate reconciliation included above.  Deferred tax assets and liabilities result from the tax effects of temporary differences between the carrying amount of assets and liabilities for financial reporting purposes and the amounts used for income tax purposes at December 31, 2017 and December 31, 2016 are as follows:     2017 2016   (In thousands)  Deferred tax assets:  Allowance for loan losses $ 5,733 $ 8,837  Other real estate owned 61 93  Other assets and accruals 1,061 1,522  Unrealized loss on available for sale securities 1,094 2,399  Unrealized loss on securities transferred to held to maturity 548 1,029  Unrealized loss on cash flow hedges 225 696  Intangible assets 515 848  Fair value adjustments on loans and other assets 3,313 5,816  Stock compensation and other 910 1,281  Total deferred tax assets: 13,460 22,521   Deferred tax liabilities:  Premises and equipment 5,211 8,321  Unrealized gain on acquired securities 1,141 1,726  Core deposit intangibles 2,774 4,394  Deferred loan costs 1,301 1,724  FHLB stock, prepaid assets, equity  investments and other liabilities 1,231 1,510  Total deferred tax liabilities 11,658 17,675  Deferred tax asset, net $ 1,802 $ 4,846  Realization of deferred tax assets is dependent upon the generation of sufficient future taxable income during the periods in which existing deferred tax assets are expected to become deductible for income tax purposes. Based on projections of future taxable income in periods in which existing deferred tax assets are expected to become deductible, in addition to the support provided by available tax planning strategies, management determined that the realization of the Company’s net deferred tax asset was more likely than not. As a result, the Company did not recognize a valuation allowance on its net deferred tax asset as of December 31, 2017 or December 31, 2016.  As of December 31, 2017 , the Company had no Federal NOL loss carryforward, Alternative Minimum Tax (“AMT”) Credit carryforward or State of Colorado net operating loss carryforward.  As of December 31, 2017 the Company does not have any known unrecognized tax benefits and does not expect the total amount of unrecognized tax benefits to change significantly in the next twelve months.

Subordinated Debentures And Tru

Subordinated Debentures And Trust Preferred Securities	12 Months Ended
	Dec. 31, 2017
Subordinated Debentures And Trust Preferred Securities [Abstract]
Subordinated Debentures and Trust Preferred Securities	 (13) Subordinated Debentures and Trust Preferred Securities  At December 31, 2017, the Company’s outstanding subordinated debentures and notes (collectively, the “Debentures”) consisted of $65,774,000 in debt, partially offset by $709,000 in debt issuance costs. As of December 31, 2017, the Debentures carried a weighted average cost of funds of 5.14% compared to 4.95% at December 31, 2016.  The Company’s Debentures were issued in three separate series. The first two issuances have a maturity of 30 years from their date of issuance. These two issuances of Debentures were issued to trusts established by the Company, which in turn issued $ 25,000,000 of trust preferred securities (“TruPS”). Generally, and with certain limitations, the Company is permitted to call the Debentures subsequent to the first five or ten years, as applicable, after issuance, if certain conditions are met, or at any time upon the occurrence and continuation of certain changes in either the tax treatment or the capital treatment of the trusts, the Debentures or the TruPS. The Guaranty Capital Trust III TruPS became callable at each quarterly interest payment date starting on July 7, 2008. The CenBank Statutory Trust III TruPS became callable at each quarterly interest payment date starting on April 15, 2009.  In April 2004, a predecessor to the Company formed CenBank Statutory Trust III and the trust completed an offering of $15,000,000, LIBOR plus 2.65% Cumulative TruPS, which are guaranteed by the Company. The trust also issued common securities to the predecessor of the Company and used the net proceeds from the offering to purchase $15,464,000 in principal amount of floating rate Debentures issued by the predecessor. The Company assumed the predecessor’s obligations relating to such securities upon the acquisition of the predecessor. Interest is paid quarterly and is distributed to the holders of the TruPS. These Debentures are unsecured, ranked junior and were subordinate in right of payment to all senior debt of the Company. The TruPS are subject to mandatory redemption upon repayment of the Debentures. The Company has the right, subject to events of default, to defer payments of interest on the Debentures at any time by extending the interest payment period for a period not exceeding 60 consecutive months with respect to each deferral period, provided that no extension period could extend beyond the redemption or maturity date of the Debentures. The Debentures mature on April 15, 2034 and are callable on each quarterly payment date.  In June 2003, a predecessor to the Company formed Guaranty Capital Trust III and the trust completed an offering of $10,000,000, LIBOR plus 3.10% Cumulative TruPS, which are guaranteed by the Company. The trust also issued common securities to the predecessor of the Company and used the net proceeds from the offering to purchase $10,310,000 in principal amount of Debentures issued by the predecessor. The Company assumed the predecessor’s obligations relating to such securities upon the acquisition of the predecessor. Interest is paid quarterly and is distributed to the holders of the TruPS. The other terms and condition of these Debentures are substantially similar to those described under the CenBank Statutory Trust III. The Debentures mature on July 7, 2033 and are callable on each quarterly interest payment date.  Under the terms of each indenture pursuant to which the two respective Debentures were issued, the Company has the ability to defer interest on the Debentures for a period not exceeding 60 consecutive months as long as it is in compliance with all covenants of the respective indenture. Such a deferral is not an event of default under each indenture and interest on the Debentures continues to accrue during the deferral period. No interest is being deferred as of December 31, 2017.  The Company is not considered the primary beneficiary of the trusts that issued the TruPS (variable interest entities); therefore, the trusts are not consolidated in the Company’s financial statements and these two Debentures are shown as liabilities. The Company’s investment in the common stock of each trust is included in other assets in the Company’s consolidated balance sheets.  In July 2016, the Company issued its third set of Debentures in anticipation of closing on the Home State transaction. This third issuance of $ 40,000,000 fixed-to-floating rate subordinated Debentures yield 5.75% and are due July 20, 2026. These Debentures initially bear a fixed interest rate of 5.75% per annum, payable semi-annually in arrears. The carrying balance of these Debentures at December 31, 2017 was comprised of the $40,000,000 face amount net of unamortized debt-issuance costs of $709,000 . On July 20, 2021, and, thereafter, the interest on the Debentures will be payable quarterly in arrears, at an annual floating rate equal to three-month LIBOR as determined by the applicable quarterly period, plus 4.73% .  As of December 31, 2017, the Company was in compliance with all financial covenants of all three Debentures.  At December 31, 2017, the Company had accrued, unpaid interest on all three Debentures of approximately $1,305,000 compared to $1,286,000 at December 31, 2016. Interest payable on Debentures is included in interest payable and other liabilities, on the consolidated balance sheets.  Although the securities issued by each of the trusts are not included as a component of stockholders’ equity in the consolidated balance sheets, they are treated as capital for regulatory purposes. Specifically, under applicable regulatory guidelines, the $25,000,000 of TruPS issued by the trusts qualify as Tier 1 capital, up to a maximum of 25 % of capital on an aggregate basis. Any amount that exceeds 25 % qualifies as Tier 2 capital. At both December 31, 2017 and December 31, 2016, the full $ 25,000,000 of the TruPS qualified as Tier 1 capital. The $40,000,000 from July 2016 issuance qualifies for inclusion in Tier 2 capital.  Under the Dodd-Frank Act and a joint rule from the Federal Reserve Board, the OCC, and the FDIC, certain TruPS are no longer eligible to be included as Tier 1 capital for regulatory purposes. However, an exception to this statutory prohibition applies to securities issued prior to May 19, 2010 by bank holding companies with less than $15 billion in total assets. As we have less than $15 billion in total assets and issued all of our TruPS prior to May 19, 2010, our TruPS continue to be eligible to be treated as Tier 1 capital, subject to other rules and limitations.  The following table summarizes the terms of each outstanding subordinated debenture issuance at December 31, 2017 (dollars in thousands):     Date Issued Amount Maturity Date Call Date * Fixed or Variable Rate Adjuster Current Rate Next Rate Reset Date**   CenBank Trust III 4/8/2004 15,464 4/15/2034 4/15/2018 Variable LIBOR + 2.65 % 4.01 % 4/15/2018  Guaranty Capital Trust III 6/30/2003 10,310 7/7/2033 4/7/2018 Variable LIBOR + 3.10 % 4.46 % 4/7/2018  Subordinated Note 7/18/2016 40,000 7/20/2026 N/A Fixed LIBOR + 4.73 % 5.75 % 7/20/2021 * Call date represents the earliest or next date the Company can call the debentures. ** On January 7, 2018, the rate on the Guaranty Capital Trust III subordinated debentures reset to 4.82% . On January 15, 2018, the rate on the CenBank Trust III subordinated debentures reset to 4.37% . The subordinated notes issued July 18, 2016 are fixed at 5.75% until July 20, 2021 at which point the notes turn to floating rate at three-month LIBOR plus 4.73% .

Commitments

Commitments	12 Months Ended
	Dec. 31, 2017
Commitments [Abstract]
Commitments	 (14) Commitments The Bank enters into credit-related financial instruments with off-balance sheet risk in the normal course of business to meet the financing needs of its customers. These financial instruments include commitments to extend credit, standby letters of credit and commercial letters of credit. Such commitments involve, to varying degrees, elements of credit and interest rate risk in excess of the amount recognized in the consolidated balance sheets.  The Bank’s exposure to credit loss is represented by the contractual amount of these commitments. The Bank follows the same credit policies in making commitments, including obtaining collateral, if necessary, as it does for on-balance sheet instruments.  At December 31 of the year indicated, the following financial instruments were outstanding whose contract amounts represented credit risk:      2017 2016   (In thousands)  Commitments to extend credit:  Variable $ 508,186 $ 436,546  Fixed 116,026 95,607  Total commitments to extend credit $ 624,212 $ 532,153   Standby letters of credit $ 12,398 $ 10,292  At December 31, 2017, the rates on the fixed rate commitments to extend credit ranged from 2.44 % to 7.00 %.  A commitment to extend credit is an agreement to lend to a customer as long as there is no violation of any condition established in the underlying contract. Commitments generally have fixed expiration dates or other termination clauses and may require payment of a fee. Commitments may expire without being fully drawn upon. Therefore, the total commitment amounts do not necessarily represent future cash requirements. Off-balance sheet risk to credit loss exists up to the face amount of these instruments, although material losses are not anticipated.  A commitment to extend credit under an overdraft protection agreement is a commitment for a possible future extension of credit to an existing deposit customer. These lines of credit are uncollateralized and usually do not contain a specified maturity date and may not be drawn upon to the total extent to which the Bank is committed.  Standby letters of credit are conditional commitments issued by the Bank to guarantee the performance of a customer to a third party. These letters of credit are primarily issued to support public and private borrowing arrangements. A majority of letters of credit issued have expiration dates within one year. The credit risk involved in issuing letters of credit is essentially the same as that involved in extending loan facilities to customers. The Bank holds collateral supporting these commitments if deemed necessary.

Legal Contingencies

Legal Contingencies	12 Months Ended
	Dec. 31, 2017
Legal Contingencies [Abstract]
Legal Contingencies	 (15) Legal Contingencies  The Company and the Bank are defendants, from time to time, in legal actions at various points of the legal process, including appeals, arising from transactions conducted in the ordinary course of business. Management believes, after consultations with legal counsel that it is not probable that the outcome of current legal actions will result in a liability that has a material adverse effect on the Company’s consolidated financial position, results of operations, comprehensive income or cash flows. In the event that such legal action results in an unfavorable outcome, the resulting liability could have a material adverse effect on the Company’s consolidated financial position, results of operations, comprehensive income or cash flows.  In the third quarter 2017, the Company incurred a $1,600,000 charge for a litigation settlement. The settlement related to a commercial borrower who filed counterclaims immediately after the Bank began collection efforts on its defaulted loan. The Company successfully defended all initial counterclaims, but at the onset of the initial trial, one new claim was raised and resulted in a hung jury. After a successful appeals process, the final claim was scheduled for a retrial in the third quarter of 2017. Prior to this retrial, the former borrower requested a conference to settle this remaining issue and after negotiation, the Company agreed to settle with the borrower to eliminate the expected significant costs of continued litigation. 

Employee Benefit Plans

Employee Benefit Plans	12 Months Ended
	Dec. 31, 2017
Employee Benefit Plans [Abstract]
Employee Benefit Plans	(16) Employee Benefit Plans  Substantially all employees are eligible to participate in the Company’s 401(k) plan. Employees may contribute up to 100% of their compensation subject to certain limits based on federal tax laws. The Company makes matching contributions equal to a specified percentage of the employee’s compensation as defined by the plan. For years ended December 31, 2017, 2016 and 2015, matching contributions to the 401(k) plan were $764,000 , $615,000 and $503,000 , respectively.  Stock-Based Compensation  Under the Company’s Incentive Plan, which expired by its terms on April 4, 2015, the Company’s Board of Directors had the authority to grant stock-based compensation awards prior to the plan’s expiration. Under the 2015 Plan, which was approved by the Company’s stockholders at the May 5, 2015 annual meeting, the Company’s Board of Directors maintains the authority to grant stock-based compensation awards to nonemployee directors, key employees, consultants and prospective employees.  Stock-based compensation awards issuable under the 2015 Plan include, and that were issuable under the Incentive Plan, included, the grant of stock-based compensation awards in the form of options, restricted stock awards, restricted stock unit awards, performance stock awards, stock appreciation rights and other equity based awards. Likewise, the Incentive Plan provided for, and the 2015 Plan provides, that eligible participants may be granted shares of Company common stock that are subject to forfeiture until the grantee vests in the stock award based on the established conditions, which may include service conditions, established performance measures or both.  Prior to the vesting of stock awards that are subject to a service vesting condition, each grantee has the rights of a stockholder with respect to voting the shares of stock represented by the award. The grantee is not entitled to dividend rights with respect to the shares of stock until vesting occurs. Prior to vesting of the stock awards with performance vesting conditions, each grantee has the rights of a stockholder with respect to voting of the shares of stock represented by the award. The recipient is generally not entitled to dividend rights with respect to unvested shares. Other than the stock awards with service and performance-based vesting conditions, no other grants have been made under the Incentive Plan or the 2015 Plan.  Under the provisions of the 2015 Plan and the Incentive Plan grants of stock-based compensation awards of 935,000 and 1,700,000 shares, respectively, were authorized, subject to adjustments upon the occurrence of certain events. As of December 31 , 2017, there were 234 ,204 and 199,945 outstanding awards under the 2015 Plan and the Incentive Plan, respectively. As of December 31, 2017, there were 619,819 shares remaining available for grant under the 2015 Plan. As of December 31, 2016, there were 178 ,513 and 334,674 outstanding awards under the 2015 Plan and the Incentive Plan, respectively and 728,305 shares remaining available for grant under the 2015 Plan.  Of the 434,149 shares represented by unvested awards at December 31 , 2017, approximately 421,000 shares are expected to vest. At December 31 , 2017, there were 290 ,066 shares of restricted stock outstanding that were subject to a performance condition. As of December 31, 2017, management expects that approximately 283,000 of these shares will vest and that the remaining shares will expire unvested. The performance shares that are expected to vest relate to awards granted to various key employees from March 2014 through November 2017. The vesting of these performance shares is contingent upon meeting certain return on average asset performance measures. The performance-based shares awarded in 2014, 2015, 2016 and 2017 each include a “threshold” and “target” performance level, with vesting determined based on where actual performance falls in relation to the numeric range represented by these performance criteria. As of December 31, 2017, management expected that all of the performance awards made in 2014, 2015, 2016 and 2017 not forfeited from a failure by the grantee to provide the requisite service will vest, which is consistent with the level of expense currently being recognized over the vesting period. Should this expectation change, the accrual of compensation expense in future periods could be impacted.  A summary of the status of unearned stock awards and the change during the period is presented in the table below:      Shares Weighted Average Fair Value on Award Date  Unearned at January 1, 2017 513,187 $ 14.39  Awarded 116,030 24.95  Forfeited (9,073) 19.51  Vested (185,995) 14.52  Unearned at December 31, 2017 434,149 $ 17.05  The Company recognized $ 3,023,000 , $ 3,121,000 and $2,739,000 in stock-based compensation expense for services rendered for the years ended December 31 , 2017, 2016 and 2015, respectively. The total income tax benefit recognized for share-based compensation arrangements was $1,149,000 , $1,186,000 and $1,041,000 for the years ending December 31, 2017, 2016 and 2015 , respectively. The grant date fair value of restricted stock awards granted in 2017, 2016 and 2015 was $2,894,000 , $2,998,000 and $2,427,000 , respectively. The fair value of vested shares as of the date of vesting were $4,711,000 , $4,334,000 and $2,250,000 in 2017, 2016 and 2015 respectively. At December 31 , 2017, compensation cost of $ 3,470,000 related to unvested awards not yet recognized is expected to be recognized over a weighted-average period of 1.1 years.

Related-Party Transactions

Related-Party Transactions	12 Months Ended
	Dec. 31, 2017
Related-Party Transactions [Abstract]
Related-Party Transactions	 (17) Related-Party Transactions  Related parties include directors, executive officers and their affiliates. Deposits from related parties held by the Company at December 31, 2017 and 2016 amounted to $3,135,000 and $3,330,000 , respectively. At December 31, 2017, the Company had two loans to one related party with a total balance of $568,000 . At December 31, 2016, the Company had n o loans to related parties.  On December 2, 2016, the Company entered into an Exchange Agreement with Castle Creek Capital Partners IV, LP providing for the exchange of 1,019,000 shares of the Company’s non-voting common stock, which represented 100% of the outstanding shares of non-voting common stock, for 1,019,000 shares of the Company’s voting common stock. 

Fair Value Measurements And Fai

Fair Value Measurements And Fair Value Of Financial Instruments	12 Months Ended
	Dec. 31, 2017
Fair Value Measurements And Fair Value Of Financial Instruments [Abstract]
Fair Value Measurements and Fair Value of Financial Instruments	(18) Fair Value Measurements and Fair Value of Financial Instruments  Fair value is the exchange price that would be received for an asset or paid to transfer a liability (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. There are three levels of inputs that may be used to measure fair values:  Level 1 - Unadjusted quoted prices in active markets that are accessible at the measurement date for identical, unrestricted assets.  Level 2 - Significant other observable inputs other than Level 1 prices such as quoted prices in markets that are not active, quoted prices for similar assets, or other inputs that are observable, either directly or indirectly, for substantially the full term of the asset.  Level 3 - Significant unobservable inputs that reflect a reporting entity’s own assumptions about the assumptions that market participants would use in pricing an asset or liability.  A financial instrument’s level within the fair value hierarchy is based on the lowest level of input that is significant to the fair value measurement. Transfers of financial instruments between levels within the fair value hierarchy are recognized on the date management determines that the underlying circumstances or assumptions have changed. Fair values of our securities are determined through the utilization of evaluated pricing models that vary by asset class and incorporate available market information (Level 2). The evaluated pricing models apply available information, as applicable, through processes such as benchmark curves, benchmarking of like securities, sector groupings, and matrix pricing to prepare evaluations. These models assess interest rate impact, develop prepayment scenarios and take into account market conventions. For securities where routine valuation techniques are not used, management utilizes a discounted cash flow model with market-adjusted discount rates or other unobservable inputs to estimate fair value. Due to the lack of ratings available on these securities, management determined that a relationship to other benchmark quoted securities was unobservable and as a result these securities should be classified as Level 3 (Level 3 inputs). The valuation of the Company’s Level 3 bonds is highly sensitive to changes in unobservable inputs.  Currently, the Company uses interest rate swaps to help manage interest rate risk. The fair value of interest rate swaps are determined using the market standard methodology of netting the discounted future fixed cash payments (or receipts) and the discounted expected variable cash receipts (or payments). The variable cash receipts (or payments) are based on the expectation of future interest rates (forward curves) derived from observed market interest rate curves (Level 2 inputs). The Company considers the value of the swaps to be sensitive to fluctuations in interest rates.  Financial Assets and Liabilities Measured on a Recurring Basis  Assets and liabilities measured at fair value on a recurring basis are summarized below:      Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Balance  (In thousands)  Assets/(Liabilities) at December 31, 2017  State and municipal securities $ - $ 75,162 $ 7,324 $ 82,486  Mortgage-backed securities – agency /  residential - 131,180 - 131,180  Corporate securities - 103,512 - 103,512  Collateralized loan obligations - 12,799 12,799  Interest rate swaps - cash flow hedge - (1,010) - (1,010)   Assets/(Liabilities) at December 31, 2016  State and municipal securities $ - $ 49,856 $ 31,752 $ 81,608  Mortgage-backed securities – agency /  residential - 129,832 - 129,832  Mortgage-backed securities – private /  residential - 265 - 265  Corporate securities - 86,246 - 86,246  Collateralized loan obligations - 26,277 26,277  Interest rate swaps - cash flow hedge - (1,929) - (1,929)  There were no transfers of financial assets and liabilities among Level 1, Level 2 and Level 3 during 2017 or 2016.  The table below presents a reconciliation and income statement classification of gains and losses for all assets measured at fair value on a recurring basis using significant unobservable inputs (Level 3) for the year ended December 31, 2017:      State and Municipal Securities  (In thousands)  Beginning balance December 31, 2016 $ 31,752  Total unrealized gains (losses) included in:  Net income (233)  Other comprehensive income (loss) -  Sales, calls and prepayments (24,195)  Transfers in and (out) of Level 3 -  Balance December 31, 2017 $ 7,324  For the year ended December 31, 2017, there was no other comprehensive income or loss for assets measured at fair value on a recurring basis using significant unobservable inputs (Level 3) as a result of consistent mark-to-market valuations at December 31, 2017 and December 31, 2016. For the year ended December 31, 2017 the amount included in net income included a $241,000 loss on the sale of the Company’s largest Level 3 municipal bond, partially offset by $8,000 in accretion on Level 3 bonds. For the year ended December 31, 2016, the amounts included in net income include accretion of any discount on these Level 3 bonds.  The table below presents a reconciliation and income statement classification of gains and losses for all assets measured at fair value on a recurring basis using significant unobservable inputs (Level 3) for the year ended December 31, 2016:     State and Municipal Securities  (In thousands)  Beginning balance January 1, 2016 $ 32,040  Total unrealized gains (losses) included in:  Net income 6  Other comprehensive income (loss) -  Sales, calls and prepayments (425)  Acquisition of Level 3 security 131  Transfers in and (out) of Level 3 -  Balance December 31, 2016 $ 31,752   For the year ended December 31, 2016, there was no other comprehensive income or loss for assets measured at fair value on a recurring basis using significant unobservable inputs (Level 3) as a result of consistent mark-to-market valuations at December 31, 2016 and December 31, 2015.  The following tables present quantitative information about Level 3 fair value measurements on the Company’s state and municipal securities at December 31, 2017 and December 31, 2016:      December 31, 2017 Fair Value Valuation Technique Unobservable Inputs Range  (In thousands)  State and municipal securities $ 7,324 discounted cash flow discount rate 2.50% - 3.00%  Total $ 7,324      December 31, 2016 Fair Value Valuation Technique Unobservable Inputs Range  (In thousands)  State and municipal securities $ 31,752 discounted cash flow discount rate 2.29% - 4.75%  Total $ 31,752  Financial Assets and Liabilities Measured on a Nonrecurring Basis  Financial assets and liabilities measured at fair value on a nonrecurring basis were not material as of December 31, 2017 and December 31, 2016.  Nonfinancial Assets and Liabilities Measured on a Nonrecurring Basis  Nonfinancial assets and liabilities measured at fair value on a nonrecurring basis were not material as of December 31, 2017 and December 31, 2016.  Fair Value of Financial Instruments  The estimated fair values, and related carrying amounts, of the Company’s financial instruments are as follows:     Fair Value Measurements at December 31, 2017:  Carrying Amount Level 1 Level 2 Level 3 Total  (In thousands)  Financial assets:  Cash and cash equivalents $ 51,553 $ 51,553 $ - $ - $ 51,553  Time deposits with banks 254 254 - - 254  Securities available for sale 329,977 - 322,653 7,324 329,977  Securities held to maturity 259,916 - 255,189 2,476 257,665  Bank stocks 24,419 n/a n/a n/a n/a  Loans held for sale 1,725 1,898 - - 1,898  Loans held for investment, net 2,782,413 - - 2,771,262 2,771,262  Accrued interest receivable 11,441 - 11,441 - 11,441   Financial liabilities:  Deposits $ 2,941,627 $ - $ 2,937,584 $ - $ 2,937,584  Securities sold under  agreements to repurchase 44,746 - 44,746 - 44,746  Short-term borrowings 157,444 - 157,444 - 157,444  Subordinated debentures 65,065 - - 61,129 61,129  Long-term borrowings 70,000 - 70,141 - 70,141  Accrued interest payable 1,930 - 1,930 - 1,930  Interest rate swap - cash flow hedge 1,010 - 1,010 - 1,010        Fair Value Measurements at December 31, 2016:  Carrying Amount Level 1 Level 2 Level 3 Total  (In thousands)  Financial assets:  Cash and cash equivalents $ 50,111 $ 50,111 $ - $ - $ 50,111  Time deposits with banks 254 254 - - 254  Securities available for sale 324,228 - 292,476 31,752 324,228  Securities held to maturity 243,979 - 236,857 2,547 239,404  Bank stocks 22,649 n/a n/a n/a n/a  Loans held for sale 4,129 4,542 - - 4,542  Loans held for investment, net 2,491,759 - - 2,504,144 2,504,144  Accrued interest receivable 9,825 - 9,825 - 9,825   Financial liabilities:  Deposits $ 2,699,084 $ - $ 2,696,766 $ - $ 2,696,766  Securities sold under  agreements to repurchase 36,948 - 36,948 - 36,948  Short-term borrowings 124,691 - 124,691 - 124,691  Subordinated debentures 64,981 - - 60,048 60,048  Long-term borrowings 72,477 - 72,769 - 72,769  Accrued interest payable 1,661 - 1,661 - 1,661  Interest rate swap - cash flow hedge 1,929 - 1,929 - 1,929   The fair value of a financial instrument is the current amount that would be exchanged between willing parties, other than in a forced liquidation. Fair value is best determined based upon quoted market prices. However, in many instances, there are no quoted market prices for the Company’s various financial instruments. In cases where quoted market prices are not available, fair values are based on estimates using present value or other valuation techniques. Those techniques are significantly affected by the assumptions used, including the discount rate and estimates of future cash flows. Accordingly, the fair value estimates may not be realized in an immediate settlement of the instrument.  Certain financial instruments and all nonfinancial instruments are excluded from the disclosure requirements. Therefore, the aggregate fair value amounts presented may not necessarily represent the underlying fair value of the Company.  The following methods and assumptions are used by the Company in estimating fair value disclosures for financial instruments:  (a) Cash and Cash Equivalents  The carrying amounts of cash and short-term instruments approximate fair values (Level 1).  (b) Securities and Bank Stocks  Fair values for securities available for sale and held to maturity are generally determined through the utilization of evaluated pricing models that vary by asset class and incorporate available market information (Level 2). The evaluated pricing models apply available information, as applicable, through processes such as benchmark curves, benchmarking of like securities, sector groupings, and matrix pricing to prepare evaluations. These models assess interest rate impact, develop prepayment scenarios and take into account market conventions. For positions that are not traded in active markets or are subject to transfer restrictions (i.e., bonds valued with Level 3 inputs), management uses a combination of reviews of the underlying financial statements, appraisals and management’s judgment regarding credit quality and intent to sell in order to determine the value of the bond.  It is not practical to determine the fair value of bank stocks due to restrictions placed on the transferability of FHLB stock, Federal Reserve Bank stock and Bankers’ Bank of the West stock. These three stocks comprise the majority of the balance of the Company’s bank stocks .  (c) Loans Held for Investment  For variable rate loans that reprice frequently and with no significant change in credit risk, fair values are based on carrying values (Level 3). Fair values for other loans (e.g., commercial real estate and investment property mortgage loans and commercial loans) are estimated using discounted cash flow analyses, using interest rates currently being offered for loans with similar terms to borrowers of similar credit quality (Level 3). Impaired loans are valued at the lower of cost or fair value when specific reserves are attributed to these loans because the present value of expected cash flows or the net realizable value of collateral is less than the impaired loan’s recorded investment. The methods utilized to estimate the fair value of loans do not necessarily represent an exit price.  (d) Loans Held for Sale  Loans held for sale are carried at the lower of cost or fair value, with fair value determined by the sales price agreed upon in negotiations with the purchaser (Level 1).  (e) Deposits  The fair values of demand deposits (e.g., interest and non-interest checking, passbook savings, and certain types of money market accounts) are, by definition, equal to the amount payable on demand at the reporting date (i.e., their carrying amount) (Level 2). The carrying amounts of variable rate, fixed-term money market accounts and certificates of deposit approximate their fair values at the reporting date (Level 2). Fair values for fixed rate certificates of deposit are estimated using a discounted cash flow calculation that applies interest rates currently being offered on certificates to a schedule of aggregated expected monthly maturities on time deposits (Level 2).  (f) Short-term Borrowings  The carrying amounts of federal funds purchased, borrowings under repurchase agreements, and other short-term borrowings maturing within ninety days approximate their fair values (Level 2).  (g) Long-term Borrowings  The fair values of the Company’s long-term borrowings are estimated using discounted cash flow analyses based on the Company’s current incremental borrowing rates for similar types of borrowing arrangements (Level 2).  (h) Subordinated Debentures  The fair values of the Company’s Subordinated Debentures are estimated using discounted cash flow analyses based on the Company’s current incremental borrowing rates for similar types of borrowing arrangements (Level 3).  (i) Accrued Interest Receivable/Payable  The carrying amounts of accrued interest approximate fair value (Level 2).  (j) Interest Rate Swaps, net  The fair value of interest rate swaps are determined using the market standard methodology of netting the discounted future fixed cash payments (or receipts) and the discounted expected variable cash receipts (or payments). The variable cash receipts (or payments) are based on the expectation of future interest rates (forward curves) derived from observed market interest rate curves (Level 2).  (k) Off-balance Sheet Instruments  Fair values for off-balance sheet, credit-related financial instruments are based on fees currently charged to enter into similar agreements, taking into account the remaining terms of the agreements and the counterparties’ credit standing. The fair value of commitments is not material.

Derivatives And Hedging Activit

Derivatives And Hedging Activities	12 Months Ended
	Dec. 31, 2017
Derivatives And Hedging Activities [Abstract]
Derivative And Hedging Activities	 (19) Derivatives and Hedging Activities  The Company is exposed to certain risks arising from both its business operations and economic conditions. The Company principally manages its exposures to a wide variety of business and operational risks through management of its core business activities. The Company utilizes derivative financial instruments to assist in the management of interest rate risk, primarily helping to secure long-term borrowing rates. Specifically, the Company enters into derivative financial instruments to manage exposures that arise from business activities that result in the payment or receipt of future known and uncertain cash amounts, the value of which are determined by interest rates. The Company’s derivative financial instruments are used to manage differences in the amount, timing and duration of the Company’s known or expected cash payments or receipts principally related to certain variable-rate borrowings. The Company does not use derivatives for trading or speculative purposes.  The table below presents the fair value of the Company’s derivative financial instruments as well as their classification on the consolidated balance sheet as of December 31, 2017 and December 31, 2016:      Balance  Sheet Fair Value December 31,  Location 2017 2016   (In thousands)  Derivatives designated as hedging instruments  Assets:  Interest rate swaps Other assets $ - $ -  Liabilities:  Interest rate swaps Other liabilities $ 1,010 $ 1,929  The Company’s objectives in using interest rate derivatives are to add stability and predictability to interest expense and to manage the Company’s exposure to interest rate movements. To accomplish this objective, the Company primarily uses interest rate swaps as part of its interest rate risk management strategy. For hedges of the Company’s variable-rate borrowings, interest rate swaps designated as cash flow hedges involve the receipt of variable amounts from a counterparty in exchange for the Company making fixed payments. As of December 31 , 2017 and December 31, 2016, the Company had two forward-sta rting interest rate swaps with an aggregate notional amount of $50,000,000 that were each designated as cash flow hedges associated with the Company’s forecasted variable-rate borrowings. The first $25,000,000 swap became effective in June 2015 at a fixed rate of 2.46% and matures in June 2020 . The second $25,000,000 swap became effective in March 2016 at a fixed rate of 3.00% and matures in March 2021 .  Summary information about the interest-rate swaps designated as cash flow hedges as of December 31, 2017 and December 31, 2016 is included in the table below:      2017 2016   (Dollars in thousands)  Notional amounts $ 50,000 $ 50,000  Weighted average pay rates 2.73 % 2.73 %  Weighted average receive rates 3 month LIBOR 3 month LIBOR  Weighted average maturity 2.9 years 3.9 years  Unrealized gains (losses) $ (1,010) $ (1,929)  The effective portion of changes in the fair value of derivatives designated and that qualify as cash flow hedges is recorded in AOCI and is subsequently reclassified into earnings in the period that the hedged forecasted transaction affects earnings. The ineffective portion of the change in fair value of the derivatives is recognized directly in earnings. The Company’s cash flow hedges are used to hedge the forecasted variable cash outflows associated with forecasted issuances of FHLB advances. During 2017, 2016, and 2015, the income statement effect of hedge ineffectiveness was not material.  Amounts reported in AOCI related to derivatives will be reclassified to interest expense as interest payments are made on the Company’s variable-rate liabilities. Management expects that, during the next 12 months, approximately $446,000 will be reclassified from AOCI into interest expense.  The Company executes interest rate swaps with commercial banking customers to facilitate their respective risk management strategies. Those interest rate swaps are simultaneously hedged by offsetting interest rate swaps that the Company executes with another third party, such that the Company minimizes its net risk exposure resulting from such transactions. As the interest rate swaps associated with this program do not meet the strict hedge accounting requirements, changes in the fair value of both the customer swaps and the offsetting swaps are recognized directly in earnings. The impact of these customer interest rate swaps on the Company’s financial statements was immaterial for the periods covered by this report.  The table below presents the effect of the Company’s derivative financial instruments on both comprehensive income and net income for the years ended December 31, 2017 and December 31, 2016:      Income  Interest Rate Swaps with Statement December 31,  Hedge Designation Location 2017 2016   (In thousands)  Gain or (loss) recognized in OCI on  derivative - net of tax Not applicable $ 84 $ (183)  (Gain) or loss reclassified from  accumulated OCI into income  (effective portion) - net of tax Interest expense 485 573  The Company has agreements with its derivative counterparties that contain a cross-default provision whereby if the Company defaults on any of its indebtedness, including default where repayment of the indebtedness has not been accelerated by the lender, then the Company could also be declared in default on its derivative obligations.  The Company has minimum collateral posting thresholds with certain of its derivative counterparties and has posted $3 ,751,000 against its obligations under these agreements. If the Company had breached any of these provisions at December 31 , 2017, it could have been required to settle its obligations under the agreements at the termination value. 

Accumulated Other Comprehensive

Accumulated Other Comprehensive Income	12 Months Ended
	Dec. 31, 2017
Accumulated Other Comprehensive Income [Abstract]
Accumulated Other Comprehensive Income	(20) Accumulated Other Comprehensive Income  The following table summarizes the changes within each classification of accumulated other comprehensive income (loss) (“AOCI”) net of tax for the years ended December 31, 2017, 2016 and 2015 :      Unrealized Gains and Losses on Available for Sale Securities Unrealized Gains and Losses on Held to Maturity Securities Unrealized Gains and Losses on Cash Flow Hedges Total  (In thousands)  Balance, January 1, 2015 $ (965) $ (1,277) $ (885) $ (3,127)  Other comprehensive income (loss)  before reclassifications, net of tax (1,221) - (775) (1,996)  Net unrealized losses on securities transferred  from available for sale, to held to maturity  net of tax 465 (465) - -  Amounts reclassified from accumulated  other comprehensive income (loss), net of tax (82) 265 135 318  Net other comprehensive income (loss) (838) (200) (640) (1,678)  Balance, December 31, 2015 $ (1,803) $ (1,477) $ (1,525) $ (4,805)   Other comprehensive income (loss)  before reclassifications, net of tax $ (2,668) $ - $ (183) $ (2,851)  Net unrealized losses on securities transferred  from available for sale, to held to maturity  net of tax 513 (513) - -  Amounts reclassified from accumulated  other comprehensive income (loss), net of tax 45 312 573 930  Net other comprehensive income (loss) (2,110) (201) 390 (1,921)  Balance, December 31, 2016 $ (3,913) $ (1,678) $ (1,135) $ (6,726)   Other comprehensive income (loss)  before reclassifications, net of tax 1,158 - 84 1,242  Net unrealized losses on securities transferred  from available for sale, to held to maturity  net of tax - - - -  Amounts reclassified from accumulated  other comprehensive income (loss), net of tax 4 301 485 790  Net other comprehensive income (loss) 1,162 301 569 2,032  Balance, December 31, 2017 $ (2,751) $ (1,377) $ (566) $ (4,694)   The following table summarizes the significant amounts reclassified out of each component of AOCI for the years ended December 31, 2017, 2016 and 2015:       Details about Affected Income Statement  AOCI Components Amount Reclassified from AOCI Line Item  Year Ended December 31,  2017 2016 2015  (In thousands)  Unrealized gains and losses on  available for sale securities $ 6 $ 73 $ (132) (Gain) loss on the sale of securities  (2) (28) 50 Income tax effect  $ 4 $ 45 $ (82) Net income  Unrealized gains and losses on  held to maturity securities $ 486 $ 504 $ 427 Interest income  (185) (192) (162) Income tax effect  $ 301 $ 312 $ 265 Net income  Unrealized gains and losses on  cash flow hedges $ 783 $ 925 $ 218 Interest expense  (298) (352) (83) Income tax effect  $ 485 $ 573 $ 135 Net income   Total reclassifications  for the period $ 790 $ 930 $ 318 Net income 

Regulatory Capital Matters

Regulatory Capital Matters	12 Months Ended
	Dec. 31, 2017
Regulatory Capital Matters [Abstract]
Regulatory Capital Matters	(21) Regulatory Capital Matters  The Holding Company and the Bank are subject to various regulatory capital requirements administered by the federal banking agencies. Failure to meet minimum capital requirements can initiate certain mandatory and possibly additional discretionary actions by regulators that, if undertaken, could have a direct material effect on the Company’s consolidated financial statements. Under capital adequacy guidelines and the regulatory framework for prompt corrective action, the Company must meet specific capital guidelines that involve quantitative measures of their assets, liabilities, and certain off-balance sheet items as calculated under regulatory accounting practices. The Company’s capital amounts and classification are also subject to qualitative judgments by the regulators about components, risk weighting, and other factors. At December 31, 2017 and 2016, the most recent regulatory notifications categorized the Bank as well capitalized under the regulatory framework for prompt corrective action. There have been no conditions or events since that notification that management believes have changed the Bank’s category.  Current risk-based regulatory capital standards generally require banks and bank holding companies to maintain a ratio of Common Equity Tier 1 capital to risk-weighted assets of at least 4.50%, a ratio of Tier 1 capital to risk-weighted assets of at least 6.00%, a ratio of Tier 1 capital to average total assets (leverage ratio) of at least 4.00% and a ratio of total capital (which includes Tier 1 capital plus certain forms of subordinated debt, a portion of the allowance for loan and lease losses, and preferred stock) to risk-weighted assets of at least 8.00%. However, u nder the final rule on Enhanced Regulatory Capital Standards, commonly referred to as Basel III, which became effective in the first quarter 2015, a capital conservation buffer of 2.5%, comprised of Common Equity Tier 1 was established above the regulatory minimum capital requirement. The capital conservation buffer phase-in period began January 1, 2016 and will become fully effective on January 1, 2019. A fully phased-in capital conservation buffer is included in the table below. Management believes that the Holding Company and the Bank met all capital adequacy requirements to which they are subject.  The Company’s and the Bank’s actual capital amounts and ratios as of both December 31, 2017 and December 31, 2016 are presented in the table below :        Actual Minimum Requirement for “Adequately Capitalized” Institution plus fully phased in Capital Conservation Buffer Minimum Requirement for "Well-Capitalized" Institution  Amount Ratio Amount Ratio Amount Ratio   Dollars in thousands  As of December 31, 2017:  Common Equity Tier 1 Risk-Based  Capital Ratio  Consolidated $ 335,153 10.57 % $ 221,969 7.00 % $ N/A N/A  Guaranty Bank and Trust Company 389,698 12.29 % 221,923 7.00 % 206,071 6.50  Tier 1 Risk-Based Capital Ratio  Consolidated 360,153 11.36 % 269,534 8.50 % N/A N/A  Guaranty Bank and Trust Company 389,698 12.29 % 269,477 8.50 % 253,626 8.00 %  Total Risk-Based Capital Ratio  Consolidated 423,583 13.36 % 332,954 10.50 % N/A N/A  Guaranty Bank and Trust Company 413,128 13.03 % 332,884 10.50 % 317,032 10.00 %  Leverage Ratio  Consolidated 360,153 10.21 % 141,164 4.00 % N/A N/A  Guaranty Bank and Trust Company 389,698 11.05 % 141,075 4.00 % 176,344 5.00 %   As of December 31, 2016:  Common Equity Tier 1 Risk-Based  Capital Ratio  Consolidated $ 296,146 10.46 % $ 198,249 7.00 % $ N/A N/A  Guaranty Bank and Trust Company 351,806 12.43 % 198,111 7.00 % 183,960 6.50  Tier 1 Risk-Based Capital Ratio  Consolidated 321,146 11.34 % 240,731 8.50 % N/A N/A  Guaranty Bank and Trust Company 351,806 12.43 % 240,564 8.50 % 226,413 8.00 %  Total Risk-Based Capital Ratio  Consolidated 384,552 13.58 % 297,373 10.50 % N/A N/A  Guaranty Bank and Trust Company 375,213 13.26 % 297,167 10.50 % 283,016 10.00 %  Leverage Ratio  Consolidated 321,146 9.81 % 130,927 4.00 % N/A N/A  Guaranty Bank and Trust Company 351,806 10.76 % 130,841 4.00 % 163,552 5.00 %   

Parent Company Only Condensed F

Parent Company Only Condensed Financial Information	12 Months Ended
	Dec. 31, 2017
Parent Company Only Condensed Financial Information [Abstract]
Parent Company Only Condensed Financial Information	(22) Parent Company Only Condensed Financial Information The following is condensed financial information of Guaranty Bancorp (parent company only):      Balance Sheets  (Parent Company Only)  December 31, 2017 and 2016   2017 2016   (In thousands)  Assets  Cash $ 11,762 $ 9,469  Investments in subsidiaries 459,443 408,039  Other assets 1,443 2,742  Total assets $ 472,648 $ 420,250   Liabilities and Stockholders' Equity  Liabilities:  Subordinated debentures $ 65,065 $ 64,981  Other liabilities 2,684 2,891  Total liabilities 67,749 67,872  Stockholders' equity:  Common stock 32 31  Common stock - additional paid-in capital 859,509 832,067  Accumulated deficit (343,383) (367,944)  Accumulated other comprehensive loss (4,694) (6,726)  Treasury stock (106,565) (105,050)  Total stockholders' equity 404,899 352,378  Total liabilities and stockholders' equity $ 472,648 $ 420,250       Statements of Income and Comprehensive Income  (Parent Company Only)  Years Ended December 31, 2017, 2016 and 2015   2017 2016 2015   (In thousands)  Income:  Management fee - subsidiary bank $ 6,139 $ 8,127 $ 5,129  Dividends from subsidiary bank 18,700 9,800 8,400  Other 1 - 28  Total income 24,840 17,927 13,557  Expenses:  Interest expense 3,440 2,005 814  Salaries and benefits 3,736 3,838 3,325  Professional services 2,083 1,774 1,779  Other 1,633 3,759 953  Total expenses 10,892 11,376 6,871  Income before federal income taxes and equity  in undistributed net income of subsidiaries 13,948 6,551 6,686  Income tax benefit 1,576 1,024 495  Income before equity in undistributed  net income of subsidiaries 15,524 7,575 7,181  Equity in undistributed income of subsidiaries 23,100 17,152 15,273  Net income $ 38,624 $ 24,727 $ 22,454   Other Comprehensive Income (Loss) 2,032 (1,921) (1,678)  Total Comprehensive Income $ 40,656 $ 22,806 $ 20,776      Statements of Cash Flow  (Parent Company Only)  Years Ended December 31, 2017, 2016 and 2015   2017 2016 2015   (In thousands)  Cash flows from operating activities:  Net income $ 38,624 $ 24,727 $ 22,454  Reconciliation of net income to net cash from  operating activities:  Equity based compensation 1,123 1,168 990  Net change in:  Other assets 1,298 1,474 (168)  Other liabilities (122) 1,454 111  Equity in undistributed income  of consolidated subsidiaries (23,100) (17,152) (15,273)  Net cash from operating activities 17,823 11,671 8,114  Cash flows from investing activities:  Cash paid in acquisition, net of cash acquired 48 (32,446) -  Net cash from investing activities 48 (32,446) -  Cash flows from financing activities:  Repurchase of common stock (1,515) (1,307) (616)  Proceeds from issuance of subordinated debt, net  of issuance costs - 39,170 -  Dividends paid (14,063) (10,524) (8,429)  Payment of stock issuance costs related to acquisition - (834) -  Net cash from financing activities (15,578) 26,505 (9,045)  Net change in cash and cash equivalents 2,293 5,730 (931)  Cash and cash equivalents, beginning of year 9,469 3,739 4,670  Cash and cash equivalents, end of year $ 11,762 $ 9,469 $ 3,739 

Quarterly Results Of Operations

Quarterly Results Of Operations	12 Months Ended
	Dec. 31, 2017
Quarterly Results Of Operations [Abstract]
Quarterly Results Of Operations	 (23) Quarterly Results of Operations (Unaudited)  2017 Quarterly Results of Operations The table below summarizes the Company’s results of operations on a quarterly basis for the year ended December 31, 2017:     Quarter Ended  December 31, September 30, June 30, March 31,  2017 2017 2017 2017  (In thousands, except share data)   Interest income $ 35,340 $ 34,688 $ 32,933 $ 31,341  Interest expense 3,546 3,354 3,434 3,169  Net interest income 31,794 31,334 29,499 28,172  Provision for loan losses 284 497 206 5  Net interest income after  provision for loan losses 31,510 30,837 29,293 28,167  Noninterest income 6,570 6,130 6,342 6,402  Noninterest expense 23,956 21,807 20,503 20,529  Income before income taxes 14,124 15,160 15,132 14,040  Income tax expense 5,519 5,106 5,007 4,200  Net income $ 8,605 $ 10,054 $ 10,125 $ 9,840   Earnings per common share–basic: $ 0.30 $ 0.36 $ 0.36 $ 0.35  Earnings per common share–diluted: $ 0.30 $ 0.36 $ 0.36 $ 0.35   Loan growth during 2017 contributed to increased interest income. The Company’s fourth quarter income statement was also impacted by the October 27, 2017 closing of the Castle Rock transaction. Noninterest expense increased in the fourth quarter 2017 primarily as a result of incurring $3,319,000 in merger-related expenses. Noninterest expense also grew in 2017 as a result of additional employee and occupancy related expenses driven by the increased size of the organization following the acquisitions in 2016 and 2017. In the fourth quarter 2017, the Company recognized a $976,000 re-measurement of its net deferred tax asset as a result of the President of the United States signing the Tax Cuts and Jobs Act of 2017 in December 2017.  2016 Quarterly Results of Operations     Quarter Ended  December 31, September 30, June 30, March 31,  2016 2016 2016 2016  (In thousands, except share data)   Interest income $ 30,800 $ 25,342 $ 21,851 $ 21,860  Interest expense 2,978 2,592 2,030 1,865  Net interest income 27,822 22,750 19,821 19,995  Provision for loan losses 90 27 10 16  Net interest income after  provision for loan losses 27,732 22,723 19,811 19,979  Noninterest income 6,232 4,705 4,142 4,178  Noninterest expense 23,237 18,624 15,134 15,792  Income before income taxes 10,727 8,804 8,819 8,365  Income tax expense 3,306 3,039 3,133 2,510  Net income $ 7,421 $ 5,765 $ 5,686 $ 5,855   Earnings per common share–basic: $ 0.27 $ 0.25 $ 0.27 $ 0.28  Earnings per common share–diluted: $ 0.26 $ 0.25 $ 0.27 $ 0.27   The acquisition of Home State on September 8, 2016, in addition to loan growth resulted in increased income in the fourth quarter of 2016. Likewise, increases in deposits from the transaction in addition to organic growth resulted in increased interest expense during 2016. Noninterest expense during 2016 was impacted by merger-related expenses and grew in the fourth quarter 2016 as a result of additional salary and occupancy related expenses driven by the increased size of the organization following the acquisition.

Subsequent Events

Subsequent Events	12 Months Ended
	Dec. 31, 2017
Subsequent Events [Abstract]
Subsequent Events	(24) Subsequent Events  On December 1, 2017, Private Capital Management LLC, a wholly owned subsidiary of Guaranty Bank and Trust Company, entered into an Asset Purchase Agreement with Wagner Wealth Management LLC (“Wagner”). The transaction, structured as an asset purchase, closed on January 16, 2018. The combined firm will operate under the name “Private Capital Management”. With the acquisition, the Company acquired approximately $575 million in assets under management (“AUM”) bringing its total AUM to approximately $1.4 billion. The acquisition increases the Company’s market share in the Denver wealth management marketplace and adds additional investment advisory expertise.  On January 16, 2018, the Company acquired the assets of Wagner in an all cash transaction. The purchase price consisted of $5.0 million of cash paid at closing in addition to contingent consideration to be paid in the future subject to future revenue. An immaterial amount of merger-related expenses were included in other general and administrative expense in 2017 related to the transaction. The transaction will be accounted for using the acquisition method of accounting which requires the assets acquired and liabilities assumed to be recognized at their fair values as of the acquisition date. As of the date of this filing, such valuations had not yet been completed.  On February 12, 2018 the Company’s Board of Directors declared a quarterly cash dividend of 16.25 cents per share, payable on March 2, 2018 to stockholders of record on February 23, 2018 .  

Summary of Significant Accoun33

Summary of Significant Accounting Policies (Policy)	12 Months Ended
	Dec. 31, 2017
Summary of Significant Accounting Policies [Abstract]
Nature of Operations and Principles of Consolidation	(a) Nature of Operations and Principles of Consolidation  The Bank is a full-service community bank offering an array of banking products and services to the communities it serves along the Front Range of Colorado including accepting time and demand deposits and originating commercial loans, commercial and residential real estate loans, Small Business Administration (“SBA”) guaranteed loans and consumer loans. The Bank, together with its wholly owned subsidiary Private Capital Management, LLC (“PCM”), provides wealth management services, including private banking, investment management and trust services. On April 3, 2017, Cherry Hills Investment Advisors, Inc. (“CHIA”), a previously wholly owned subsidiary of the Bank, was consolidated into PCM. Substantially all of the Bank’s loans are secured by specific items of collateral, including business assets, commercial and residential real estate, which include land or improved land and consumer assets. There are no significant concentrations of loans to any one industry or customer. On September 8, 2016, the Company completed the acquisition of Home State Bancorp (“Home State”), based in Loveland, Colorado, in exchange for a combination of Company stock and cash. T he transaction enhanced the Company’s balance sheet liquidity and supports the Company’s objective of serving the banking needs of northern Colorado business and consumer customers. On October 27, 2017, the Company completed the acquisition of Castle Rock Bank Holding Company (“Castle Rock”), based in Castle Rock, Colorado in exchange for Company stock. Similar to the Home State acquisition, the Castle Rock acquisition enhanced the Company’s liquidity and grew market share in Douglas County, Colorado.  The accounting and reporting policies of the Company conform to generally accepted accounting principles in the United States of America. All material intercompany balances and transactions have been eliminated in consolidation. The Company’s financial statements reflect all adjustments that are, in the opinion of management, necessary for a fair presentation of its financial position and results of operations for the periods presented. All such adjustments are of a normal and recurring nature. Subsequent events have been evaluated through the date of financial statement issuance.
Business Combinations	(b) Business Combinations  The Company accounts for acquisitions of businesses using the acquisition method of accounting. Under the acquisition method, assets acquired and liabilities assumed are recorded at their estimated fair value upon the date of acquisition. Management utilizes various valuation techniques including discounted cash flow analyses to determine the fair values of assets acquired and liabilities assumed. Any excess of purchase price over amounts allocated to the acquired assets, including identifiable intangible assets, and liabilities assumed is recorded as goodwill.
Use of Estimates	(c) Use of Estimates  The preparation of the consolidated financial statements in conformity with U.S. generally accepted accounting principles requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities as of the dates of the consolidated balance sheets and income and expense for the periods presented. Actual results could differ significantly from those estimates.
Cash Flows	(d) Cash Flows  Cash and cash equivalents on the Company’s consolidated balance sheets include cash-on-hand, balances due from banks and interest-bearing deposits in other financial institutions that have an original maturity of three months or less and are carried at cost. Net cash flows are reported for customer loan and deposit transactions, interest-bearing deposits in other financial institutions, short-term borrowings, federal funds purchased and repurchase agreements.
Time Deposits with Banks	(e) Time Deposits with Banks  The Company may invest in short term, fully insured time deposits with other banks. 
Securities	(f) Securities  Securities are classified as held to maturity and carried at amortized cost when management has the positive intent and ability to hold them to maturity. Securities not classified as held to maturity are classified as available for sale. Securities available for sale are carried at fair value, with unrealized gains and losses reported in other comprehensive income, net of tax.  Interest income includes amortization of purchase premium or discount. Premiums and discounts on securities are amortized according to the effective interest method without anticipating prepayments, except for mortgage-backed securities where prepayments are anticipated. Gains and losses on sales are recorded on the trade date and determined using the specific identification method.  Management evaluates securities for other-than-temporary impairment (“OTTI”) on a quarterly basis, and more frequently when economic or market conditions warrant such an evaluation. For securities in an unrealized loss position, management considers the extent and duration of the unrealized loss and the financial condition and near-term prospects of the issuer. Management also assesses whether it intends to sell, or more likely than not will be required to sell, a security in an unrealized loss position before recovery of its amortized cost basis. If either of the criteria regarding intent or requirement to sell is met, the entire difference between amortized cost and fair value is recognized as an impairment to earnings.  The investments in bank stocks are reviewed by management quarterly for potential OTTI. This quarterly review considers the credit quality of the institution, the institution’s ability to repurchase shares and the Company’s carrying value in the shares relative to book value. Based on these reviews, management concluded that there was no impairment during 2017, 2016 and 2015.
Loans and Loan Commitments	(g) Loans and Loan Commitments  The Company extends commercial, real estate and consumer loans to customers. A substantial portion of the loan portfolio consists of commercial and real estate loans throughout the Front Range of Colorado. The ability of the Company’s borrowers to honor their loan contracts is generally dependent upon the real estate and general economic conditions prevailing in Colorado, among other factors.  Loans acquired in a business combination, that on the date of acquisition reflected evidence of credit deterioration since origination and for which collection of all contractually required payments was not probable, were designated as purchased credit impaired or “PCI” loans. In the September 8, 2016 Home State transaction, the Company designated $2,108,000 of loans as PCI. In the October 27, 2017 Castle Rock transaction, the Company designated $1,283,000 of loans as PCI. As of December 31, 2017, $1,622,000 in PCI loans remained in the Company’s loan portfolio. Loans not designated as PCI (“Non-PCI” loans) comprise the significant majority of the Company’s loan portfolio and consist of internally originated loans in addition to acquired loans. Acquired Non-PCI loans were designated as such as of the date of acquisition for one or both of the following reasons: (1) management considered the collection of all contractually required payments probable, and (2) the loan demonstrated no evidence of credit deterioration since origination.  Loans that management has the intent and ability to hold for the foreseeable future, or until maturity or payoff, are reported at their outstanding unpaid principal balances, adjusted for charge-offs, the allowance for loan losses, acquisition-related discounts and any deferred fees or costs. Acquired loans are recorded upon acquisition at fair value, with no associated allowance for loan loss. However, if subsequent to acquisition the credit quality of an acquired loan deteriorates, an allowance may be required. Accounting for loans is performed consistently across all portfolio segments and classes.  A portfolio segment is defined in accounting guidance as the level at which an entity develops and documents a systematic methodology to determine its allowance for loan losses. A class is defined in accounting guidance as a group of loans having similar initial measurement attributes, risk characteristics and methods for monitoring and assessing risk.  Interest income is accrued on the unpaid principal balance of the Company’s loans. Loan origination fees, net of direct origination costs, are deferred and recognized as an adjustment to the related loan yield using the effective interest method without anticipating prepayments. Purchase discount or premium on acquired, Non-PCI loans is recognized as an adjustment to interest income over the contractual life of such loans using the effective interest method, or taken into income when the related loans are paid off or sold. With respect to PCI loans, the “accretable yield”, calculated as the excess of undiscounted expected cash flows over the present value of expected cash flows, is accreted into income over the term of the loan assuming the amount and timing of cash flows are reasonably estimable.  The accrual of interest on loans is discontinued (and the loan is put on nonaccrual status) at the time the loan is 90 days past due unless the loan is well secured and in process of collection. The time at which a loan enters past due status is based on the contractual terms of the loan. In all cases, loans are placed on nonaccrual or charged-off prior to the date on which they would otherwise enter past due status if collection of principal or interest is considered doubtful. The interest on a nonaccrual loan is accounted for using the cost-recovery or cash-basis method, until the loan qualifies for a return to the accrual-basis method. Under the cost-recovery method, interest income is not recognized until the loan balance is reduced to zero, with payments received being applied first to the principal balance of the loan. Under the cash-basis method, interest income is recognized when the payment is received in cash. A loan is returned to accrual status after the delinquent borrower’s financial condition has improved, when all the principal and interest amounts contractually due are brought current and when the likelihood of the borrower making future timely payments is reasonably assured.  Financial instruments include off ‑balance sheet credit instruments, such as commitments to make loans and commercial letters of credit issued to meet customer financing needs. The face amount of each item represents the Company’s total exposure to loss with respect to the item before considering customer collateral or ability to repay. Such financial instruments are recorded when they are funded. 
Allowance for Loan Losses and Allowance for Unfunded Commitments	(h) Allowance for Loan Losses and Allowance for Unfunded Commitments  The allowance for loan losses or “the allowance” is a valuation allowance for probable incurred loan losses and is reported as a reduction of outstanding loan balances.  Management evaluates the amount of the allowance on a regular basis based upon its periodic review of the collectability of the Company’s loans. Factors affecting the collectability of the loans include the nature and volume of the loan portfolio, adverse situations that may affect borrowers’ ability to repay, estimated value of any underlying collateral and prevailing economic conditions. This evaluation is inherently subjective as it requires estimates that are susceptible to significant revision as more information becomes available. Management maintains the allowance at a level that it deems appropriate to adequately provide for probable incurred losses in the loan portfolio and other extensions of credit. The Company’s methodology for estimating the allowance is consistent across all portfolio segments and classes of loans.  Loans deemed to be uncollectable are charged-off and deducted from the allowance. The Company’s loan portfolio primarily consists of non-homogeneous commercial and real estate loans where charge-offs are considered on a loan-by-loan basis based on the facts and circumstances, including management’s evaluation of collateral values in comparison to book values on collateral-dependent loans. Charge-offs on smaller balance unsecured homogenous type loans such as overdrafts and ready reserves are recognized by the time the loan in question is 90 days past due. The provision for loan losses and recoveries on loans previously charged-off are added to the allowance.  The allowance consists of both specific and general components. The specific component relates to loans that are individually classified as impaired. All loans are subject to individual impairment evaluation should the pertinent facts and circumstances suggest that such evaluation is necessary. Factors considered by management in determining impairment include the loan’s payment status and the probability of collecting scheduled principal and interest payments when they become due. Loans that experience insignificant payment delays and payment shortfalls generally are not classified as impaired. A loan is considered impaired when, based on current information and events, it is probable that the Company will be unable to collect the scheduled payments of principal or interest when due according to the contractual terms of the original underlying loan agreement. Management determines the significance of payment delays and payment shortfalls on a case-by-case basis, taking into consideration all of the circumstances surrounding the loan and the borrower, including the length of the delay, the reasons for the delay, the borrower’s prior payment record, and the amount of the shortfall in relation to the principal and interest owed. If a loan is impaired, a portion, if any, of the allowance is allocated so that the loan is reported at the present value of estimated future cash flows using the loan’s original contractual rate or at the fair value of collateral, less estimated selling costs, if repayment is expected solely from collateral. Troubled debt restructurings (“TDRs”) are separately identified for impairment disclosures. If a TDR is considered to be a collateral-dependent loan, impairment of the loan is measured using the fair value of the collateral, less estimated selling costs. Likewise, if a TDR is not collateral-dependent, impairment is measured by the present value of estimated future cash flows using the loan’s effective rate at inception. For TDRs that subsequently default, the Company determines the amount of reserve in accordance with its accounting policy for the allowance.  The general component of the allowance covers all other loans not specifically identified as impaired and is determined by calculating losses recognized by portfolio segment during the current credit cycle and adjusted based on management’s evaluation of various qualitative factors. In performing this calculation, loans are aggregated into one of three portfolio segments: Real Estate, Consumer and Commercial & Other. An assessment of risks impacting loans in each of these portfolio segments is performed, and qualitative adjustment factors, which will adjust the historical loss rate, are estimated. These qualitative adjustment factors consider current conditions relative to conditions present throughout the current credit cycle in the following areas: credit quality, loan class concentration levels, economic conditions, loan growth dynamics and organizational conditions. The historical loss experience is adjusted for management’s estimate of the impact of these factors based on the risks present for each portfolio segment.  The Company recognizes a liability in relation to unfunded commitments that is intended to represent the estimated future losses on commitments. In calculating the amount of this liability, management considers the amount of the Company’s off-balance sheet commitments, estimated utilization factors and loan specific risk factors. The Company’s liability for unfunded commitments is calculated quarterly and the liability is included under “other liabilities” in the consolidated balance sheet. 
Loans Held for Sale	 (i) Loans Held for Sale  Particular loans may be considered “held for sale” as of the Company’s balance sheet date. The Company routinely sells SBA guaranteed loans, and historically has designated select classified or nonaccrual loans as held-for-sale as part of its strategy to dispose of these non-earning assets. Once the decision is made to sell a loan, the loan is designated as held for sale and carried at the lower of cost or fair value, with any required write-down being taken at the time of the reclassification.
Transfers of Financial Assets	(j) Transfers of Financial Assets  Transfers of financial assets are accounted for as sales when control over the assets has been relinquished. Control over transferred assets is deemed to be surrendered when the assets have been isolated from the Company, the transferee obtains the right (free of conditions that constrain it from taking advantage of that right) to pledge or exchange the transferred assets, and the Company does not maintain effective control over the transferred assets through an agreement to repurchase them before their maturity. 
Other Real Estate Owned and Foreclosed Assets	(k) Other Real Estate Owned and Foreclosed Assets  Assets acquired through, or in lieu of, loan foreclosure are initially recorded at fair value less costs to sell when acquired, establishing a new cost basis. If the asset’s fair value declines subsequent to the asset’s acquisition, a valuation allowance is recorded through expense. Operating revenues and expenses of these assets and reductions in the fair value of the assets are included in noninterest expense. Gains and losses on their disposition are also included in noninterest expense.
Premises and Equipment	(l) Premises and Equipment  Land is carried at cost. Buildings, equipment and software are carried at cost, less accumulated depreciation and amortization computed on the straight-line method over the useful life of the asset. Leasehold improvements are depreciated over the shorter of their estimated useful life or the lease term. Buildings and leasehold improvements carry an estimated useful life of five to 40 years and equipment and software carry an estimated useful life of one to 15 years. Repairs and maintenance are charged to noninterest expense as incurred. 
Bank Stocks	(m) Bank Stocks  The Bank is a member of the Federal Home Loan Bank (FHLB) system. Members are required to own a certain amount of stock based on the level of borrowings and other factors, and may invest in additional amounts. The Bank also owns Federal Reserve Bank (FRB) stock, Bankers’ Bank of the West (BBW) stock and Pacific Coast Bankers’ Bank (PCBB) stock. FHLB, FRB, BBW and PCBB stock is carried at cost, classified as a restricted security, and periodically reviewed for impairment based on the likelihood of ultimate recovery of par value. Both cash and stock dividends are reported as income.
Goodwill And Other Intangible Assets	(n) Goodwill and Other Intangible Assets  Goodwill was recorded in both the Home State and Castle Rock transactions and represents the excess of the purchase price over the fair value of acquired tangible assets and identifiable intangible assets less liabilities. Goodwill is assessed at least annually for impairment and any such impairment is recognized in the period identified.  Intangible assets acquired in a business combination are amortized over their estimated useful lives to their estimated residual values and evaluated for impairment whenever changes in circumstances indicate that such an evaluation is necessary.  Core deposit intangible assets (“CDI assets”) are recognized at the time of their acquisition based on valuations prepared by independent third parties or other estimates of fair value. In preparing such valuations, management considers variables such as deposit servicing costs, attrition rates and market discount rates. CDI assets are amortized to expense over their useful lives, ranging from 10 years to 15 years.  Customer relationship intangible assets are recognized at the time of their acquisition based upon management’s estimate of their fair value. In preparing their valuation, management considers variables such as growth in existing customer base, attrition rates and market discount rates. The c ustomer relationship intangible assets are amortized to expense over their estimated useful life, which has been estimated to be 10 years. 
Impairment of Long-Lived Assets	(o) Impairment of Long-Lived Assets  Long-lived assets, such as premises and equipment, and finite-lived intangible assets subject to amortization, are reviewed for impairment whenever events or changes in circumstances indicate that the carrying value of an asset may not be recoverable. The recoverability of assets to be held and used is measured by a comparison of the carrying value of the asset to the estimated undiscounted future cash flows expected to be generated by the asset. If the carrying value of an asset exceeds its estimated undiscounted future cash flows, an impairment charge is recognized by the amount by which the carrying value of the asset exceeds the fair value of the asset, less costs to sell.  Assets to be disposed of are reported at the lower of their carrying value or fair value less costs to sell, classified as held for sale and moved into other assets. At the time of the transfer into held for sale depreciation is suspended. During 2017, the Company recognized $394,000 in impairment charges on three properties acquired in the Home State transaction and designated as held for sale during the year. During 2016, the Company recognized an impairment charge of $185,000 on a long-lived asset. During 2015 the Company recognized $122,000 in impairment charges on the sale of a former branch facility. 
Derivative Instruments	(p) Derivative Instruments  The Company records all derivatives on its consolidated balance sheet at fair value. At the inception of a derivative contract, the Company designates the derivative as one of three types based on the Company’s intentions and belief as to the derivative’s likely effectiveness as a hedge. These three types are (1) a hedge of the fair value of a recognized asset or liability or of an unrecognized firm commitment (“fair value hedge”), (2) a hedge of a forecasted transaction or the variability of cash flows to be received or paid related to a recognized asset or liability (“cash flow hedge”), or (3) an instrument with no hedging designation (“stand-alone derivative”). To date, the Company has entered into cash flow hedges and stand-alone derivative agreements but has not entered into any fair value hedges. For a cash flow hedge, the gain or loss on the derivative is reported in other comprehensive income and is reclassified into earnings in the same periods during which the hedged transaction impacts earnings. Any portion of the cash flow hedge not deemed highly effective in hedging the changes in expected cash flows of the hedged item is recognized immediately in current earnings. Changes in the fair value of derivatives that do not qualify for hedge accounting are reported currently in earnings, as noninterest income.  The Company formally documents the relationship between derivatives and hedged items, as well as the risk-management objective and the strategy for undertaking hedge transactions, at the inception of the derivative contract. This documentation includes linking cash flow hedges to specific assets and liabilities on the balance sheet or to specific firm commitments or forecasted transactions. The Company also formally assesses, both at the hedge’s inception and on an ongoing basis, whether the hedge is highly effective in offsetting changes in cash flows of the hedged items. 
Stock Incentive Plan	(q) Stock Incentive Plan  The Company’s Amended and Restated 2005 Stock Incentive Plan (the “Incentive Plan”) provided for the grant of equity-based awards representing up to a total of 1,700,000 shares of voting common stock to key employees, nonemployee directors, consultants and prospective employees. The Incentive Plan expired by its terms on April 4, 2015. At the Company’s annual meeting of stockholders on May 5, 2015, the Company’s stockholders approved the Guaranty Bancorp 2015 Long-Term Incentive Plan (the “2015 Plan”), which had been previously approved by the Company’s Board of Directors. The 2015 Plan provides for the grant of stock options, stock awards, stock unit awards, performance stock awards, stock appreciation rights, and other equity-based awards representing up to a total of 935,000 shares of voting common stock to key employees, nonemployee directors, consultants and prospective employees. All awards issued under the Incentive Plan will remain outstanding in accordance with their terms despite the expiration of the Incentive Plan; however, any awards granted subsequent to the expiration of the Incentive Plan have been, and will continue to be, issued under the 2015 Plan. As of December 31, 2017 there were 619,819 shares remaining available for grant under the 2015 Plan.  As of December 31, 2017, the Company had granted stock awards under both the Incentive Plan and the 2015 plan. The Company recognizes stock compensation expense for services received in a share-based payment transaction over the requisite service period, generally defined as the vesting period. For awards with graded vesting, compensation cost is recognized on a straight-line basis over the requisite service period for the entire award. The compensation cost of employee and director services received in exchange for stock awards is based on the grant date fair value of the award, as determined by quoted market prices. Stock compensation expense is recognized using an estimated forfeiture rate, adjusted as necessary to reflect actual forfeitures. The Company has issued stock awards that vest based on the passage of time over service periods of one to five years (in some cases vesting in annual installments, in other cases cliff vesting at the end of the service period), and other stock awards that vest contingent upon the satisfaction of certain performance conditions. The last date on which outstanding performance stock awards may vest is February 15, 2020. Compensation cost related to the performance stock awards is recognized based on an evaluation of expected financial performance in comparison to established criteria. Should expectations of the Company’s future financial performance change, expense to be recognized in future periods could be impacted. 
Stock Repurchase Plan	(r) Stock Repurchase Plan  On February 12, 2018, the Company’s Board of Directors authorized the extension of the expiration date of the Company’s share repurchase program originally announced in April 2014. Due to previous extensions the program was scheduled to expire on April 2, 2018, however, this most recent extension extends the expiration date of the repurchase program through April 2, 2019. Pursuant to the program, the Company may repurchase up to 1,000,000 shares of its voting common stock, par value $0.001 per share. As of the date of this filing, the Company had not repurchased any shares under the program.
Bank-Owned Life Insurance	(s) Bank-Owned Life Insurance  The Bank has life insurance policies on certain key executives and former key executives. Bank-owned life insurance (“BOLI”) is recorded at the amount that can be realized under the insurance contract at the balance sheet date , which is the cash surrender value adjusted for other charges or other amounts likely due at settlement. 
Income Taxes	(t) Income Taxes  Income tax expense is the total of the current year’s income tax payable or refundable and the increase or decrease in deferred tax assets and liabilities. Deferred tax assets and liabilities are recognized for the future tax consequences attributable to differences between the financial statement carrying amounts of existing assets and liabilities and their respective tax bases and operating loss and tax credit carry forwards. Deferred tax assets and liabilities are measured using enacted tax rates expected to apply to taxable income in the years in which those temporary differences are expected to be recovered or settled. The effect on deferred tax assets and liabilities of a change in tax rates is recognized in income in the period of the enactment date. During 2017 the President of the United States signed the 2017 Tax Cuts and Jobs Act (“the Tax Act”) which reduced the statutory Federal corporate income tax rate from 35% to 21% beginning in 2018. As a result, the Company’s existing deferred tax assets and liabilities expecting to be reversed beginning in 2018 had to be re-measured in 2017 using the updated statutory rates applicable in 2018. The re-measurement of the Company’s net deferred tax asset resulted in a $976,000 re-measurement charge being recognized in income tax expense in 2017.  Deferred tax assets are reduced by a valuation allowance when, in the opinion of management, it is more likely than not that the Company will not realize some portion of, or the entire deferred tax asset. In assessing the Company’s likelihood of realizing deferred tax assets, management evaluates both positive and negative evidence, forecasts of future income, taking into account applicable tax planning strategies, and assessments of current and future economic and business conditions. Management performs this analysis quarterly and adjusts as necessary. At December 31, 2017 and December 31, 2016, the Company had a net deferred tax asset of $ 1,802,000 and $ 4,846,000 , respectively, which includes the deferred tax asset associated with the net unrealized loss on securities and interest rate swaps. The portion of the total deferred tax asset relating to net unrealized losses on securities and interest rate swaps was $1,867,000 as of December 31, 2017 and $4,124,000 as of December 31, 2016. After analyzing the composition of and changes in the deferred tax assets and liabilities and considering the Company’s forecasted future taxable income and various tax planning strategies, including the intent to hold the securities available for sale that were in a loss position until maturity, management determined that as of December 31, 2017, it was more likely than not that the net deferred tax asset would be fully realized. As a result, there was no valuation allowance with respect to the Company’s deferred tax asset as of December 31, 2017 or December 31, 2016.  The Company and the Bank are subject to U.S. federal income tax, State of Colorado income tax and income tax in other states. Generally, the Company is no longer subject to examination by Federal taxing authorities for years before 2014 and is no longer subject to examination by the State of Colorado for years before 2013. The Company recognizes interest related to income tax matters as interest expense and penalties related to income tax matters as other noninterest expense. At December 31, 2017 and December 31, 2016 , the Company did not have any amounts accrued for interest or penalties.
Segments of an Enterprise and Related Information	 (u) Segments of an Enterprise and Related Information  The Company operates as a single segment. The operating information used by the Company’s executive officers and its Chief Executive Officer for purposes of assessing performance and making operating decisions impacting the Company is the consolidated financial data presented in this report. For the years ended 2017, 2016, and 2015 the Company had one active operating subsidiary, the Bank. The Company has determined that banking is its one reportable business segment. 
Earnings Per Common Share	(v) Earnings per Common Share  Basic earnings per common share represents the earnings allocable to common stockholders divided by the weighted average number of common shares outstanding during the period. Dilutive common shares that may be issued by the Company represent unvested stock awards subject to a service or performance condition.  Earnings per common share have been computed based on the following calculation of weighted average shares outstanding :    Year Ended December 31,  2017 2016 2015   Average common shares outstanding 28,056,588 23,267,108 21,065,590  Effect of dilutive unvested stock grants (1) 287,099 292,839 206,746  Average shares outstanding for calculated  diluted earnings per common share 28,343,687 23,559,947 21,272,336  _____________  (1) Unvested stock grants representing 434,149 shares at December 31, 2017 had a dilutive impact of 287,099 shares in the diluted earnings per share calculation. Unvested stock grants representing 513,187 shares at December 31, 2016 had a dilutive impact of 292,839 shares in the diluted earnings per share calculation. Unvested stock grants representing 590,755 shares at December 31, 2015 had a dilutive impact of 206,746 shares in the diluted earnings per share calculation. 
Dividend Restrictions	(w) Dividend Restrictions  Holders of voting common stock are entitled to dividends out of funds legally available for such dividends, when, and if, declared by the Board of Directors.  Various banking laws applicable to the Bank limit the payment of dividends, management fees and other distributions by the Bank to the Company, and may therefore limit our ability to pay dividends on our common stock. Under these laws, the Bank is currently required to request permission from the Federal Reserve and the Colorado Division of Banking prior to payment of a dividend to the Company.  Any future determination relating to dividend policy will be made at the discretion of our Board of Directors and will depend on a number of factors, including general business conditions, our financial results, our future prospects, capital requirements, contractual, legal, and regulatory restrictions on the payment of dividends by us to our stockholders or by the Bank to the holding company, and such other factors as our Board of Directors may deem relevant.  On February 12, 2018 , the Company’s Board of Directors declared a quarterly cash dividend of 16.25 cents per share, payable on March 2, 2018 to stockholders of record on February 23, 2018 .
Fair Values of Financial Instruments	(x) Fair Values of Financial Instruments  Fair values of financial instruments are estimated using relevant market information and other assumptions, as more fully disclosed in Note 18 “Fair Value Measurements and Fair Value of Financial Instruments”. Fair value estimates involve uncertainties and matters of significant judgment regarding interest rates, credit risk, prepayments, and other factors, especially in the absence of broad markets for particular items. Changes in assumptions or in market conditions could significantly affect the estimates. 
Loss Contingencies	(y) Loss Contingencies  Loss contingencies, including claims and legal actions arising in the ordinary course of business, are recorded as liabilities when the likelihood of a loss is probable and an amount or range of loss can be reasonably estimated. Loss contingencies are more fully disclosed in Note 15 “Legal Contingencies”. 
Recently Issued Accounting Standards	(z) Recently Issued Accounting Standards  Adoption of New Accounting Standards:  In March 2016, the FASB issued accounting standards update 2016-09 Compensation-Stock Compensation. The purpose of the update was to simplify the accounting for share-based payment transactions, including the income tax consequences of such transactions. Under the provisions of the update, the income tax consequences of excess tax benefits and deficiencies are recognized in income tax expense in the reporting period in which the awards vest. Previously, excess tax benefits or deficiencies impacted stockholders’ equity directly to the extent there was an existing cumulative excess tax benefit. The update also provided that entities may continue to estimate forfeitures in accounting for stock-based compensation or recognize them as they occur; the Company has elected to continue to estimate forfeitures. The provisions of this update become effective for interim and annual periods beginning after December 15, 2016, however early adoption was permitted beginning in 2016. The Company adopted the provisions of the update in the fourth quarter 2016 with the most significant impact being $528,000 of excess tax benefit in restricted stock vestings directly reducing 2016 income tax expense. In 2017, excess tax benefits related to restricted stock vestings reduced income tax expense by $764,000 .  Recently Issued but not yet Effective Accounting Standards:  In May 2014, the FASB issued accounting standards update 2014-09 Revenue from Contracts with Customers, codified at ASC 606. The main provisions of the update require the identification of performance obligations within a contract and require the recognition of revenue based on a stand-alone allocation of contract revenue to each performance obligation. Performance obligations may be satisfied and revenue recognized over a period of time if: (i) the customer simultaneously receives and consumes the benefits provided by the entity’s performance as the entity performs, or (ii) the entity’s performance creates or enhances an asset that the customer controls as the asset is created or enhanced, or (iii) the entity’s performance does not create an asset with an alternative use to the entity and the entity has an enforceable right to payment for performance completed to date. For public business entities, the amendments of this update are effective beginning with interim and annual reporting periods beginning after December 15, 2017. Interest income earned on financial instruments is outside of the scope of the update, and as a result the impact of the update is limited to certain components of noninterest income. The Company adopted ASC 606, utilizing the modified retrospective transition method on January 1, 2018. Because the Company’s noninterest income is primarily generated by customer transactions or attributable to the passage of time (wealth management fees), ASC 606 will not have a material impact on the timing of revenue recognized in our income statement and there will be no cumulative transition adjustment to retained earnings in 2018 for revenue relating to uncompleted customer contracts as of December 31, 2017. Management has concluded that the requirements of this update will not have a material impact on the Company’s financial position, results of operations or cash flows and has concluded that the most significant impact will be the disaggregated disclosure of certain components of noninterest income.  In January 2016, the FASB released accounting standards update 2016-01 Recognition and Measurement of Financial Assets and Liabilities. The main provisions of the update are to eliminate the available for sale classification of accounting for equity securities and to adjust the fair value disclosures for financial instruments carried at amortized costs such that the disclosed fair values represent an exit price as opposed to an entry price. The provisions of this update will require that equity securities be carried at fair market value on the balance sheet and any periodic changes in value will be adjustments to the income statement. A practical expedient is provided for equity securities without a readily determinable fair value, such that these securities can be carried at cost less any impairment. The provisions of this update become effective for interim and annual periods beginning after December 15, 2017. The disclosure of the fair value of the loan portfolio will be impacted as the fair value will be calculated using an exit price. Management has selected a consultant to assist with the exit pricing valuation of loans as of March 31, 2018. Management does not expect the requirements of this update to have a material impact on the Company’s financial position, results of operations or cash flows.  In February 2016, the FASB issued accounting standards update 2016-02 Leases. The update requires all leases, with the exception of short-term leases that have contractual terms of no greater than one year, to be recorded on the balance sheet. Under the provisions of the update, leases classified as operating will be reflected on the balance sheet with the recognition of both a right-of-use asset and a lease liability. Under the update, a distinction will exist between finance and operating type leases and the rules for determining which classification a lease will fall into are similar to existing rules. For public business entities, the amendments of this update are effective for interim and annual periods beginning after December 15, 2018. The update requires a modified retrospective transition under which comparative balance sheets from the earliest historical period presented will be revised to reflect what the financials would have looked like were the provisions of the update applied consistently in all prior periods. Management is in the process of evaluating the impacts of the update on the Company’s financial position and does not expect the requirements of the update to have a material impact on the Company’s financial position, results of operations or cash flows. Based on leases outstanding at December 31, 2017, we anticipate total assets and total liabilities will increase between $9,000,000 and $11,000,000 as the result of additional leases being recognized on our balance sheet. Decisions to repurchase, modify, or renew leases prior to the implementation date will impact the results of the Company’s final analysis.  In June 2016, the FASB issued accounting standards update 2016-13 Financial Instruments - Credit Losses, commonly referred to as “CECL”. The provisions of the update eliminate the probable initial recognition threshold under current GAAP which requires reserves to be based on an incurred loss methodology. Under CECL reserves required for financial assets measured at amortized cost will reflect an organization’s estimate of all expected credit losses over the contractual term of the financial asset and thereby require the use of reasonable and supportable forecasts to estimate future credit losses. Because CECL encompasses all financial assets carried at amortized cost, the requirement that reserves be established based on an organization’s reasonable and supportable estimate of expected credit losses extends to held to maturity (“HTM”) debt securities. Under the provisions of the update credit losses recognized on available for sale (“AFS”) debt securities will be presented as an allowance as opposed to a write-down. In addition, CECL will modify the accounting for purchased loans, so that reserves are established at the date of acquisition for purchased loans. Under current GAAP a purchased loan’s contractual balance is adjusted to fair value through a credit discount and no reserve is recorded on the purchased loan upon acquisition. Since under CECL reserves will be established for purchased loans at the time of acquisition the accounting for purchased loans is made more comparable to the accounting for originated loans. Finally, increased disclosure requirements under CECL require organizations to present the currently required credit quality disclosures disaggregated by the year of origination or vintage. The FASB expects that the evaluation of underwriting standards and credit quality trends by financial statement users will be enhanced with the additional vintage disclosures. For public business entities that are SEC filers the amendments of the update will become effective beginning January 1, 2020. The Company has formed a cross-functional committee that is assessing our data and system needs and has begun working with an external vendor regarding the development of a CECL-compliant model and the gathering of the requisite data. Management expects to recognize a one-time cumulative effect adjustment to the allowance for loan losses as of the first reporting period in which the new standard is effective, but cannot yet estimate the magnitude or direction of the one-time adjustment or the overall impact of the new guidance on the Company’s financial position, results of operations or cash flows.  In August 2016, the FASB issued accounting standards update 2016-15, Statement of Cash Flows. This update addresses eight specific cash flow issues with the objective of reducing the existing diversity in practice of how certain cash receipts and cash payments are presented and classified in the statement of cash flows. The amendments in this update are effective for fiscal years and interim periods beginning after December 15, 2017; however early adoption is permitted. The provisions of the update outline the appropriate classification of debt extinguishment costs, repayment of debt instruments with insignificant coupons, contingent consideration payments made subsequent to a business combination, insurance proceeds, premiums and settlements on bank-owned life insurance policies, distributions from equity method investees, beneficial interest in securitizations and the appropriate classification of payments and receipts that contain aspects of multiple classes of cash flows. Management does not expect the update to materially impact the Company’s statement of cash flows, although the classification of certain items could shift relative to past presentation.  In January 2017, the FASB issued accounting standards update 2017-04, Simplifying the Test for Goodwill Impairment. The provisions of the update eliminate the existing second step of the goodwill impairment test which provides for the allocation of reporting unit fair value among existing assets and liabilities, with the net leftover amount representing the implied fair value of goodwill. In replacement of the existing goodwill impairment rule, the update will provide that impairment should be recognized as the excess of any of the reporting unit’s carrying value over the fair value of the reporting unit. Under the provisions of this update, the amount of the impairment is limited to the carrying value of the reporting unit’s goodwill. For public business entities that are SEC filers, the amendments of the update will become effective in fiscal years beginning after December 15, 2019. Management does not expect the requirements of this update to have a material impact on the Company’s financial position, results of operations or cash flows.  In January 2017, the FASB issued ASU No. 2017-01, Business Combinations - Clarifying the Definition of a Business. The amendments in this update provide a more robust framework to use in determining when a set of assets and activities is a business. Because the current definition of a business is interpreted broadly and can be difficult to apply, feedback received by FASB indicated that analyzing transactions can be inefficient and costly and that the current definition does not permit the use of reasonable judgment. The amendments provide more consistency in applying the guidance, reduce the costs of application, and make the definition of a business more operable. The amendments in this update become effective for annual periods and interim periods within those annual periods beginning after December 15, 2017. Management does not expect the requirements of this update to have a material impact on the Company’s financial position, results of operations or cash flows.  In March 2017, the FASB issued accounting standards update 2017-08, Premium Amortization on Purchased Callable Debt Securities. The provisions of the update require premiums recognized upon the purchase of callable debt securities to be amortized to the earliest call date in order to avoid losses recognized upon call. For public business entities that are SEC filers, the amendments of the update will become effective in fiscal years beginning after December 15, 2018. Management does not expect the requirements of this update to have a material impact on the Company’s financial position, results of operations or cash flows.  In August 2017, the FASB issued accounting standards update 2017-12, Targeted Improvements to Accounting for Hedging Activities. The purpose of this updated guidance is to better align a company’s financial reporting for hedging activities with the economic objectives of those activities. Adoption of the standard also provides a one-time opportunity to transfer held to maturity securities to available for sale. The update is effective for public business entities for fiscal years beginning after December 15, 2018. The update requires a modified retrospective transition method in which the Company will recognize the cumulative effect of the change on the opening balance of each affected component of equity in the statement of financial position as of the date of adoption. The provisions of the standard impacting the accounting for hedges designated as fair value hedges will not have a material impact on the Company’s financial position, results of operations or cash flows, as the Company does not have any fair value hedges. The Company is currently evaluating whether the opportunity to transfer held to maturity securities to the available for sale designation would be beneficial.  In February 2018, the FASB issued accounting standards updated 2018-02, Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income. The amendments of the update allow an optional reclassification for stranded tax effects included in accumulated other comprehensive income, resulting from the reduction in the U.S. Statutory Corporate Income Tax Rate as provided for in the Tax Act. As a result of the December 22, 2017 signing of the Tax Act, the Company recognized a $976,000 re-measurement of its net deferred tax assets, including a re-measurement of $1,011,000 in a net deferred tax asset related to unrealized losses on available for sale securities, cash flow hedges and held to maturity securities previously transferred from available for sale. Because the tax effect of variations in unrealized losses of available for sale securities, cash flow hedges and transferred held to maturity securities impact accumulated other comprehensive income the Company had a stranded tax effect of $1,011,000 included in its December 31, 2017 accumulated other comprehensive income. The provisions of the update are effective for all entities beginning with fiscal years commencing after December 15, 2018, with early adoption allowed in any interim period or for financial statements not yet issued as of the date the FASB issued the accounting standards update. The Company is currently evaluating the potential adoption of the update . 
Reclassifications	(aa) Reclassifications  Certain reclassifications of prior year balances have been made to conform to the current year presentation. These reclassifications had no impact on the Company’s total assets, stockholder's equity, net income or net change in cash and cash equivalents.

Summary of Significant Accoun34

Summary of Significant Accounting Policies (Tables)	12 Months Ended
	Dec. 31, 2017
Summary of Significant Accounting Policies [Abstract]
Earnings (Loss) Per Common Share	   Year Ended December 31,  2017 2016 2015   Average common shares outstanding 28,056,588 23,267,108 21,065,590  Effect of dilutive unvested stock grants (1) 287,099 292,839 206,746  Average shares outstanding for calculated  diluted earnings per common share 28,343,687 23,559,947 21,272,336  _____________  (1) Unvested stock grants representing 434,149 shares at December 31, 2017 had a dilutive impact of 287,099 shares in the diluted earnings per share calculation. Unvested stock grants representing 513,187 shares at December 31, 2016 had a dilutive impact of 292,839 shares in the diluted earnings per share calculation. Unvested stock grants representing 590,755 shares at December 31, 2015 had a dilutive impact of 206,746 shares in the diluted earnings per share calculation.

Business Combination (Tables)

Business Combination (Tables)	12 Months Ended
	Dec. 31, 2017
Business Acquisition [Line Items]
Schedule Of Pro Forma Financial Information	   Year Ended December 31,  2017 2016  UNAUDITED (Dollars in thousands, except per share data)   Net interest income $ 125,203 $ 95,889  Noninterest income 25,952 19,918  Net income 42,178 26,710   Earnings per common share-basic: $ 1.47 $ 1.11  Earnings per common share-diluted: $ 1.45 $ 1.09 
Castle Rock Bank [Member]
Business Acquisition [Line Items]
Schedule Of Assets And Liabilities Acquired	  Assets acquired:  (In thousands)  Cash and cash equivalents $ 21,717  Securities available for sale 39,670  Bank stocks 705  Net Loans 71,052  Premises and equipment, net 4,184  Other real estate owned 761  Goodwill 8,702  Other intangible assets, net 1,870  Bank owned life insurance 3,371  Other assets 1,048  Total assets acquired 153,080   Liabilities assumed:  Deposits 128,450  Other liabilities 209  Total liabilities assumed 128,659  Net Assets Acquired $ 24,421 
Composition Of Acquired Portfolio	  October 27,  2017  (In thousands)  Commercial and residential real estate $ 51,531  Construction 6,337  Commercial 5,666  Agricultural 3,735  Consumer 3,783  Total gross loans 71,052 
Home State Acquisition [Member]
Business Acquisition [Line Items]
Schedule Of Assets And Liabilities Acquired	   Assets acquired:  (In thousands)  Cash and cash equivalents $ 11,849  Time deposits with banks 504  Securities available for sale 396,450  Securities held to held maturity 850  Bank stocks 1,477  Net Loans 445,529  Premises and equipment, net 22,950  Other real estate owned 45  Goodwill 56,404  Other intangible assets, net 11,701  Other assets 8,118  Total assets acquired 955,877   Liabilities assumed:  Deposits 769,709  Securities sold under agreement to repurchase and federal funds purchased 19,985  Federal Home Loan Bank term notes 2,525  Federal Home Loan Bank line of credit borrowing 2,052  Other liabilities 9,128  Total liabilities assumed 803,399  Net Assets Acquired $ 152,478 
Composition Of Acquired Portfolio	  September 8,  2016  (In thousands)  Commercial and residential real estate $ 294,069  Construction 39,947  Commercial 45,996  Agricultural 7,906  Consumer 16,460  SBA 25,227  Other 15,924  Total gross loans 445,529 

Securities (Tables)

Securities (Tables)	12 Months Ended
	Dec. 31, 2017
Securities [Abstract]
Fair Value Of Available For Sale Debt Securities	   December 31, 2017  Fair Value Gross Unrealized Gains Gross Unrealized Losses Amortized Cost  (In thousands)  Securities available for sale:  State and municipal $ 82,486 $ 530 $ (1,224) $ 83,180  Mortgage-backed - agency / residential 131,180 133 (3,069) 134,116  Corporate 103,512 546 (1,320) 104,286  Collateralized loan obligations 12,799 17 (51) 12,833  Total securities available for sale $ 329,977 $ 1,226 $ (5,664) $ 334,415      December 31, 2016  Fair Value Gross Unrealized Gains Gross Unrealized Losses Amortized Cost  (In thousands)  Securities available for sale:  State and municipal $ 81,608 $ 91 $ (2,542) $ 84,059  Mortgage-backed - agency / residential 129,832 347 (3,117) 132,602  Mortgage-backed - private / residential 265 - (6) 271  Corporate 86,246 288 (1,357) 87,315  Collateralized loan obligations 26,277 50 (66) 26,293  Total securities available for sale $ 324,228 $ 776 $ (7,088) $ 330,540 
Unrecognized Gains and Losses, Securities Held To Maturity	    Fair Value Gross Unrecognized Gains Gross Unrecognized Losses Amortized Cost  (In thousands)  December 31, 2017:  State and municipal $ 136,490 $ 1,121 $ (1,530) $ 136,899  Mortgage-backed - agency / residential 103,925 315 (2,088) 105,698  Asset-backed 16,050 7 (76) 16,119  Other 1,200 - - 1,200  $ 257,665 $ 1,443 $ (3,694) $ 259,916   December 31, 2016:  State and municipal $ 118,734 $ 745 $ (3,120) $ 121,109  Mortgage-backed - agency / residential 100,565 507 (2,590) 102,648  Asset-backed 18,905 9 (126) 19,022  Other 1,200 - - 1,200  $ 239,404 $ 1,261 $ (5,836) $ 243,979 
Proceeds From Sales And Calls of Securities	   Year Ended December 31,  2017 2016 2015   (In thousands)  Proceeds $ 80,027 $ 370,111 $ 27,985  Gross gains 334 2,486 217  Gross losses (340) (2,608) (85)  Net tax (benefit) expense related to  gains (losses) on sale (2) (46) 50 
Investments Classified by Contractual Maturity Date	   Available for Sale  December 31, 2017 Fair Value Amortized Cost  (In thousands)  Securities available for sale:  Due in one year or less $ 6,058 $ 6,041  Due after one year through five years 18,956 18,949  Due after five years through ten years 105,554 107,156  Due after ten years 55,430 55,320  Total AFS, excluding mortgage-backed (MBS)  and collateralized loan obligations 185,998 187,466  Mortgage-backed and collateralized  loan obligations 143,979 146,949  Total securities available for sale $ 329,977 $ 334,415       Held to Maturity  December 31, 2017 Fair Value Amortized Cost  (In thousands)  Securities held to maturity:  Due in one year or less $ 1,524 $ 1,504  Due after one year through five years 15,672 15,699  Due after five years through ten years 74,774 75,282  Due after ten years 45,720 45,614  Total HTM, excluding MBS and asset-backed 137,690 138,099  Mortgage-backed and asset-backed 119,975 121,817  Total securities held to maturity $ 257,665 $ 259,916 
Fair Value And The Unrealized Loss On Temporarily Impaired Securities	    December 31, 2017 Less than 12 Months 12 Months or More Total  Fair Value Unrealized Losses Fair Value Unrealized Losses Fair Value Unrealized Losses   (In thousands) Description of securities: Available for sale: State and municipal $ 8,710 $ (82) $ 36,894 $ (1,142) $ 45,604 $ (1,224) Mortgage-backed - agency / residential 43,494 (315) 77,909 (2,754) 121,403 (3,069) Corporate 38,267 (567) 23,731 (753) 61,998 (1,320) Collateralized loan obligations 4,532 (13) 3,011 (38) 7,543 (51)  Held to maturity: State and municipal 18,521 (167) 69,314 (2,057) 87,835 (2,224) Mortgage-backed - agency / residential 19,721 (162) 78,472 (2,685) 98,193 (2,847) Asset-backed - - 16,051 (448) 16,051 (448) Total temporarily impaired $ 133,245 $ (1,306) $ 305,382 $ (9,877) $ 438,627 $ (11,183)    December 31, 2016 Less than 12 Months 12 Months or More Total  Fair Value Unrealized Losses Fair Value Unrealized Losses Fair Value Unrealized Losses   (In thousands) Description of securities: Available for sale: State and municipal $ 47,434 $ (2,542) $ - $ - $ 47,434 $ (2,542) Mortgage-backed - agency / residential 93,909 (2,782) 9,526 (335) 103,435 (3,117) Mortgage-backed - private / residential 265 (6) - - 265 (6) Corporate 49,964 (1,042) 5,685 (315) 55,649 (1,357) Collateralized loan obligations 9,077 (17) 5,488 (49) 14,565 (66)  Held to maturity: State and municipal 90,959 (3,804) 596 (259) 91,555 (4,063) Mortgage-backed - agency / residential 99,920 (3,442) - - 99,920 (3,442) Asset-backed 15,690 (542) 3,216 (98) 18,906 (640) Total temporarily impaired $ 407,218 $ (14,177) $ 24,511 $ (1,056) $ 431,729 $ (15,233)     

Bank Stocks (Tables)

Bank Stocks (Tables)	12 Months Ended
	Dec. 31, 2017
Bank Stocks [Abstract]
Summary Of Bank Stocks	   2017 2016   (In thousands)  Federal Reserve Bank of Kansas City $ 12,495 $ 12,104  Federal Home Loan Bank of Topeka 10,235 8,895  Other bank stocks securities 1,689 1,650  Totals $ 24,419 $ 22,649 

Loans (Tables)

Loans (Tables)	12 Months Ended
	Dec. 31, 2017
Loans [Abstract]
Loans Held For Investment By Loan Type	   December 31, December 31,  2017 2016   (In thousands)  Commercial and residential real estate $ 1,977,431 $ 1,768,424  Construction 99,965 88,451  Commercial 523,355 461,666  Agricultural 16,995 16,690  Consumer 143,066 125,264  SBA 44,121 52,380  Other 866 2,195  Total gross loans 2,805,799 2,515,070  Deferred (fees) and costs (136) (61)  Loans, held for investment, net 2,805,663 2,515,009  Less allowance for loan losses (23,250) (23,250)  Net loans, held for investment $ 2,782,413 $ 2,491,759 
Allowance For Loan Losses	   Year Ended December 31,  2017 2016 2015   (In thousands)  Balance, beginning of period $ 23,250 $ 23,000 $ 22,490  Provision for loan losses 992 143 96  Loans charged-off (1,550) (721) (238)  Recoveries on loans previously  charged-off 558 828 652  Balance, end of period $ 23,250 $ 23,250 $ 23,000 
Allowance For Loan Losses And Loans Held For Investment By Portfolio Segment	   Real Estate Consumer and Installment Commercial and Other Total  (In thousands)  Allowance for Loan Losses  Balance as of January 1, 2015 $ 19,607 $ 39 $ 2,844 $ 22,490  Charge-offs (21) (12) (205) (238)  Recoveries 284 29 339 652  Provision (credit) 436 15 (355) 96  Balance as of December 31, 2015 $ 20,306 $ 71 $ 2,623 $ 23,000   Balance as of January 1, 2016 $ 20,306 $ 71 $ 2,623 $ 23,000  Charge-offs (217) (51) (453) (721)  Recoveries 340 14 474 828  Provision (credit) (347) 71 419 143  Balance as of December 31, 2016 $ 20,082 $ 105 $ 3,063 $ 23,250   Balance as of January 1, 2017 $ 20,082 $ 105 $ 3,063 $ 23,250  Charge-offs (386) (106) (1,058) (1,550)  Recoveries 132 91 335 558  Provision (credit) (1,283) 220 2,055 992  Balance as of December 31, 2017 $ 18,545 $ 310 $ 4,395 $ 23,250           Balances at December 31, 2017:   Allowance for Loan Losses  Individually evaluated $ 1 $ - $ 1,121 $ 1,122  Collectively evaluated 18,544 310 3,274 22,128  Total $ 18,545 $ 310 $ 4,395 $ 23,250   Loans  Individually evaluated $ 11,256 $ 1 $ 12,363 $ 23,620  Collectively evaluated 2,225,944 74,675 481,424 2,782,043  Total $ 2,237,200 $ 74,676 $ 493,787 $ 2,805,663      Balances at December 31, 2016:   Allowance for Loan Losses  Individually evaluated $ 29 $ - $ 193 $ 222  Collectively evaluated 20,053 105 2,870 23,028  Total $ 20,082 $ 105 $ 3,063 $ 23,250   Loans  Individually evaluated $ 22,728 $ 2 $ 7,645 $ 30,375  Collectively evaluated 2,024,524 55,182 404,928 2,484,634  Total $ 2,047,252 $ 55,184 $ 412,573 $ 2,515,009 
Schedule Of Impaired Loans	   December 31, 2017 Recorded Investment Unpaid Balance Related Allowance Average Recorded Investment YTD Interest Income Recognized YTD  (In thousands)  Impaired loans with no related allowance:  Commercial and residential real estate $ 9,981 $ 10,705 $ - $ 16,166 $ 2,052  Construction - - - - -  Commercial 1,006 1,553 - 886 195  Consumer 367 425 - 88 -  Other 2,233 2,838 - 1,066 62  Total $ 13,587 $ 15,521 $ - $ 18,206 $ 2,309   Impaired loans with a related allowance:  Commercial and residential real estate $ 46 $ 157 $ 1 $ 779 $ -  Construction - - - - -  Commercial 9,807 9,899 1,120 5,262 447  Consumer 180 214 1 329 18  Other - - - 635 6  Total $ 10,033 $ 10,270 $ 1,122 $ 7,005 $ 471   Total impaired loans:  Commercial and residential real estate $ 10,027 $ 10,862 $ 1 $ 16,945 $ 2,052  Construction - - - - -  Commercial 10,813 11,452 1,120 6,148 642  Consumer 547 639 1 417 18  Other 2,233 2,838 - 1,701 68  Total impaired loans $ 23,620 $ 25,791 $ 1,122 $ 25,211 $ 2,780       December 31, 2016 Recorded Investment Unpaid Balance Related Allowance Average Recorded Investment YTD Interest Income Recognized YTD  (In thousands)  Impaired loans with no related allowance:  Commercial and residential real estate $ 20,477 $ 21,140 $ - $ 13,875 $ 1,911  Construction - - - 592 -  Commercial 222 229 - 243 16  Consumer 18 19 - 117 2  Other 817 1,625 - 493 -  Total $ 21,534 $ 23,013 $ - $ 15,320 $ 1,929   Impaired loans with a related allowance:  Commercial and residential real estate $ 1,767 $ 1,890 $ 19 $ 8,590 $ 44  Construction - - - - -  Commercial 6,371 6,423 155 2,937 309  Consumer 306 383 9 389 9  Other 397 444 39 348 -  Total $ 8,841 $ 9,140 $ 222 $ 12,264 $ 362   Total impaired loans:  Commercial and residential real estate $ 22,244 $ 23,030 $ 19 $ 22,465 $ 1,955  Construction - - - 592 -  Commercial 6,593 6,652 155 3,180 325  Consumer 324 402 9 506 11  Other 1,214 2,069 39 841 -  Total impaired loans $ 30,375 $ 32,153 $ 222 $ 27,584 $ 2,291 
Summary Of Past Due Loans By Class	   December 31, 2017 30-89 Days Past Due 90 Days + Past Due and Still Accruing Nonaccrual Total Nonaccrual and Past Due Total Loans, Held for Investment  (In thousands)  Commercial and residential  real estate $ 410 $ - $ 1,750 $ 2,160 $ 1,977,335  Construction - - - - 99,960  Commercial 1,663 - 2,079 3,742 523,330  Consumer 469 - 444 913 143,059  Other 327 - 1,281 1,608 61,979  Total $ 2,869 $ - $ 5,554 $ 8,423 $ 2,805,663      December 31, 2016 30-89 Days Past Due 90 Days + Past Due and Still Accruing Nonaccrual Total Nonaccrual and Past Due Total Loans, Held for Investment  (In thousands)  Commercial and residential  real estate $ 1,258 $ - $ 2,835 $ 4,093 $ 1,768,381  Construction - - - - 88,449  Commercial 37 - 1,094 1,131 461,655  Consumer 42 - 201 243 125,261  Other - - 1,117 1,117 71,263  Total $ 1,337 $ - $ 5,247 $ 6,584 $ 2,515,009 
Summary Of The Risk Category Of Loans By Class Of Loans	   December 31, 2017 Commercial & Residential Real Estate Construction Commercial Consumer Other Total  (In thousands)  Non-classified $ 1,964,934 $ 99,965 $ 513,563 $ 142,512 $ 57,256 $ 2,778,230  Substandard 12,497 - 9,792 554 4,726 27,569  Doubtful - - - - - -  Subtotal 1,977,431 99,965 523,355 143,066 61,982 2,805,799  Deferred fees and costs (96) (5) (25) (7) (3) (136)  Loans, held for investment, net $ 1,977,335 $ 99,960 $ 523,330 $ 143,059 $ 61,979 $ 2,805,663      December 31, 2016 Commercial & Residential Real Estate Construction Commercial Consumer Other Total  (In thousands)  Non-classified $ 1,742,974 $ 88,451 $ 456,861 $ 124,932 $ 68,978 $ 2,482,196  Substandard 25,450 - 4,805 332 2,287 32,874  Doubtful - - - - - -  Subtotal 1,768,424 88,451 461,666 125,264 71,265 2,515,070  Deferred fees and costs (43) (2) (11) (3) (2) (61)  Loans, held for investment, net $ 1,768,381 $ 88,449 $ 461,655 $ 125,261 $ 71,263 $ 2,515,009 
Loans By Class Modified As Troubled Debt Restructurings	     Year Ended December 31, 2017:  Troubled Debt Restructurings Number of Loans Pre-Modification Outstanding Recorded Investment Post-Modification Outstanding Recorded Investment   (In thousands)  Commercial and residential  real estate 12 $ 2,935 $ 2,935  Construction - - -  Commercial 15 7,991 7,991  Consumer 1 51 51  Other 5 1,085 1,085  Total 33 $ 12,062 $ 12,062        Year Ended December 31, 2016:  Troubled Debt Restructurings Number of Loans Pre-Modification Outstanding Recorded Investment Post-Modification Outstanding Recorded Investment   (In thousands)  Commercial and residential  real estate 2 $ 1,018 $ 1,018  Construction - - -  Commercial 16 6,650 6,650  Consumer - - -  Other 1 97 97  Total 19 $ 7,765 $ 7,765 

Premises And Equipment (Tables)

Premises And Equipment (Tables)	12 Months Ended
	Dec. 31, 2017
Premises And Equipment [Abstract]
Summary Of Cost, Accumulated Depreciation, And Amoritazation Of Premises And Equipment	   2017 2016   (In thousands)  Land $ 15,354 $ 16,826  Buildings 59,060 58,637  Leasehold improvements 3,790 3,691  Equipment and Software 17,506 16,553  Leasehold interest in land 684 684  Subtotal $ 96,394 $ 96,391  Accumulated depreciation and amortization (30,520) (29,001)  Total premises and equipment $ 65,874 $ 67,390 
Summary Of Future Minimum Rent Commitments	    2018 $ 1,721  2019 1,698  2020 1,724  2021 1,664  2022 1,316  Thereafter 3,407  $ 11,530 

Goodwill And Other Intangible40

Goodwill And Other Intangible Assets (Tables)	12 Months Ended
	Dec. 31, 2017
Goodwill And Other Intangible Assets [Abstract]
Schedule Of Finite Lived Intangible Assets And Related Accumulated Amortization	   December 31,  Useful Life 2017 2016   (In thousands)  Core deposit intangible assets 10 - 15 years $ 75,956 $ 74,087  Core deposit intangible assets accumulated amortization (65,272) (63,112)  Core deposit intangible assets, net $ 10,684 $ 10,975   Customer relationship intangible assets 10 years 6,243 6,243  Customer relationship intangible assets accumulated amortization (2,486) (1,901)  Customer relationship intangible assets, net $ 3,757 $ 4,342   Total other intangible assets, net $ 14,441 $ 15,317 
Schedule Of Estimated Amortization Expense	   Total  Fiscal year ending:  2018 $ 2,705  2019 2,188  2020 1,935  2021 1,795  2022 1,597  Thereafter 4,221  $ 14,441 

Deposits (Tables)

Deposits (Tables)	12 Months Ended
	Dec. 31, 2017
Deposits [Abstract]
Schedule Of Maturities Of Time Deposits	   2018 $ 339,410  2019 81,482  2020 21,279  2021 8,983  2022 7,733  $ 458,887 

Securities Sold Under Agreeme42

Securities Sold Under Agreements To Repurchase (Tables)	12 Months Ended
	Dec. 31, 2017
Securities Sold Under Agreements To Repurchase [Abstract]
Information Pertaining To Securities Sold Under Agreement To Repurchase	   2017 2016   (Dollars in thousands)  Ending Balance $ 44,746 $ 36,948  Weighted-average interest rate at year-end 0.20 % 0.19 % 
Summary Of Balances For Securities Sold Under Agreements To Repurchase	   Year Ended December 31,  2017 2016 2015   (Dollars in thousands)  Average daily balance during the year $ 37,332 $ 25,221 $ 24,531  Average interest rate during the year 0.19 % 0.21 % 0.18 %  Maximum month-end balance during the year $ 48,391 $ 38,089 $ 31,977 

Borrowings (Tables)

Borrowings (Tables)	12 Months Ended
	Dec. 31, 2017
Borrowings [Abstract]
Summary Of Borrowings	   Principal Interest Rate Maturity Date Total Committed  (Dollars in thousands)  December 31, 2017  Short-term borrowings:  FHLB line of credit $ 157,444 1.47% overnight $ 706,251  Total short-term borrowings $ 157,444   Long-term borrowings:  FHLB term notes (fixed rate) 20,000 2.52% January 23, 2018 See below  FHLB term notes (variable rate) 25,000 1.48% March 7, 2018 See below  FHLB term notes (variable rate) 25,000 1.45% August 3, 2018 See below  Total long-term borrowings $ 70,000   Total borrowings $ 227,444   December 31, 2016  Short-term borrowings:  FHLB line of credit $ 124,691 0.72% overnight $ 597,202  Total short-term borrowings $ 124,691   Long-term borrowings:  FHLB term notes (fixed rate) 22,477 Range: 2.52% - 6.38% 2017 - 2018 See below  FHLB term notes (variable rate) 25,000 1.15% March 7, 2017 See below  FHLB term notes (variable rate) 25,000 0.96% August 4, 2017 See below  Total long-term borrowings $ 72,477   Total borrowings $ 197,168 
Summary Of Borrowings On The FHLB Line Of Credit	   Year Ended December 31,  2017 2016 2015   (Dollars in thousands)  Average daily balance during the year $ 73,042 $ 81,539 $ 130,152  Average interest rate during the year 0.99 % 0.55 % 0.28 %  Maximum month-end balance during the year $ 157,444 $ 185,700 $ 212,065 

Income Taxes (Tables)

Income Taxes (Tables)	12 Months Ended
	Dec. 31, 2017
Income Taxes [Abstract]
Schedule Of Components Of Income Tax Expense (Benefit)	   Year Ended December 31,  2017 2016 2015   (In thousands)  Current tax expense:  Federal $ 15,894 $ 11,921 $ 7,165  State 2,215 427 -  Total current tax expense 18,109 12,348 7,165  Deferred tax expense  Federal 626 (1,026) 3,132  Re-measurement of net deferred tax asset 976 - -  State 121 666 973  Total deferred tax expense (benefit) 1,723 (360) 4,105   Total tax expense $ 19,832 $ 11,988 $ 11,270 
Reconciliation Of Effective Income Tax Rate From The Statutory Federal Rate	   Year Ended December 31,  2017 2016 2015   Tax expense at statutory federal rate 35.0 % 35.0 % 35.0 %  State tax, net of federal benefit 2.7 % 2.7 % 2.8 %  Tax exempt income (4.8) % (5.1) % (4.4) %  Re-measurement of net deferred tax asset 1.7 % - % - %  related to 2017 Tax Cuts and Jobs Act  Other (0.7) % 0.1 % - %  Effective tax rate 33.9 % 32.7 % 33.4 % 
Schedule Of Deferred Tax Assets And Liabilities	   2017 2016   (In thousands)  Deferred tax assets:  Allowance for loan losses $ 5,733 $ 8,837  Other real estate owned 61 93  Other assets and accruals 1,061 1,522  Unrealized loss on available for sale securities 1,094 2,399  Unrealized loss on securities transferred to held to maturity 548 1,029  Unrealized loss on cash flow hedges 225 696  Intangible assets 515 848  Fair value adjustments on loans and other assets 3,313 5,816  Stock compensation and other 910 1,281  Total deferred tax assets: 13,460 22,521   Deferred tax liabilities:  Premises and equipment 5,211 8,321  Unrealized gain on acquired securities 1,141 1,726  Core deposit intangibles 2,774 4,394  Deferred loan costs 1,301 1,724  FHLB stock, prepaid assets, equity  investments and other liabilities 1,231 1,510  Total deferred tax liabilities 11,658 17,675  Deferred tax asset, net $ 1,802 $ 4,846 

Subordinated Debentures And T45

Subordinated Debentures And Trust Preferred Securities (Tables)	12 Months Ended
	Dec. 31, 2017
Subordinated Debentures And Trust Preferred Securities [Abstract]
Schedule Of Subordinated Debenture Issuance	   Date Issued Amount Maturity Date Call Date * Fixed or Variable Rate Adjuster Current Rate Next Rate Reset Date**   CenBank Trust III 4/8/2004 15,464 4/15/2034 4/15/2018 Variable LIBOR + 2.65 % 4.01 % 4/15/2018  Guaranty Capital Trust III 6/30/2003 10,310 7/7/2033 4/7/2018 Variable LIBOR + 3.10 % 4.46 % 4/7/2018  Subordinated Note 7/18/2016 40,000 7/20/2026 N/A Fixed LIBOR + 4.73 % 5.75 % 7/20/2021 * Call date represents the earliest or next date the Company can call the debentures. ** On January 7, 2018, the rate on the Guaranty Capital Trust III subordinated debentures reset to 4.82% . On January 15, 2018, the rate on the CenBank Trust III subordinated debentures reset to 4.37% . The subordinated notes issued July 18, 2016 are fixed at 5.75% until July 20, 2021 at which point the notes turn to floating rate at three-month LIBOR plus 4.73%

Commitments (Tables)

Commitments (Tables)	12 Months Ended
	Dec. 31, 2017
Commitments [Abstract]
Commitments To Extend Credit	   2017 2016   (In thousands)  Commitments to extend credit:  Variable $ 508,186 $ 436,546  Fixed 116,026 95,607  Total commitments to extend credit $ 624,212 $ 532,153   Standby letters of credit $ 12,398 $ 10,292 

Employee Benefit Plans (Tables)

Employee Benefit Plans (Tables)	12 Months Ended
	Dec. 31, 2017
Employee Benefit Plans [Abstract]
Summary Of Unearned Stock Awards	   Shares Weighted Average Fair Value on Award Date  Unearned at January 1, 2017 513,187 $ 14.39  Awarded 116,030 24.95  Forfeited (9,073) 19.51  Vested (185,995) 14.52  Unearned at December 31, 2017 434,149 $ 17.05 

Fair Value Measurements And F48

Fair Value Measurements And Fair Value Of Financial Instruments (Tables)	12 Months Ended
	Dec. 31, 2017
Fair Value Measurements And Fair Value Of Financial Instruments [Abstract]
Financial Assets and Liabilities Measured on a Recurring Basis	   Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Balance  (In thousands)  Assets/(Liabilities) at December 31, 2017  State and municipal securities $ - $ 75,162 $ 7,324 $ 82,486  Mortgage-backed securities – agency /  residential - 131,180 - 131,180  Corporate securities - 103,512 - 103,512  Collateralized loan obligations - 12,799 12,799  Interest rate swaps - cash flow hedge - (1,010) - (1,010)   Assets/(Liabilities) at December 31, 2016  State and municipal securities $ - $ 49,856 $ 31,752 $ 81,608  Mortgage-backed securities – agency /  residential - 129,832 - 129,832  Mortgage-backed securities – private /  residential - 265 - 265  Corporate securities - 86,246 - 86,246  Collateralized loan obligations - 26,277 26,277  Interest rate swaps - cash flow hedge - (1,929) - (1,929) 
Fair Value Measurements Using Significant Unobservable Inputs (Level 3)	   State and Municipal Securities  (In thousands)  Beginning balance December 31, 2016 $ 31,752  Total unrealized gains (losses) included in:  Net income (233)  Other comprehensive income (loss) -  Sales, calls and prepayments (24,195)  Transfers in and (out) of Level 3 -  Balance December 31, 2017 $ 7,324  For the year ended December 31, 2017, there was no other comprehensive income or loss for assets measured at fair value on a recurring basis using significant unobservable inputs (Level 3) as a result of consistent mark-to-market valuations at December 31, 2017 and December 31, 2016. For the year ended December 31, 2017 the amount included in net income included a $241,000 loss on the sale of the Company’s largest Level 3 municipal bond, partially offset by $8,000 in accretion on Level 3 bonds. For the year ended December 31, 2016, the amounts included in net income include accretion of any discount on these Level 3 bonds.  The table below presents a reconciliation and income statement classification of gains and losses for all assets measured at fair value on a recurring basis using significant unobservable inputs (Level 3) for the year ended December 31, 2016:     State and Municipal Securities  (In thousands)  Beginning balance January 1, 2016 $ 32,040  Total unrealized gains (losses) included in:  Net income 6  Other comprehensive income (loss) -  Sales, calls and prepayments (425)  Acquisition of Level 3 security 131  Transfers in and (out) of Level 3 -  Balance December 31, 2016 $ 31,752 
Quantitative Information About Level 3 Fair Value Measurements	   December 31, 2017 Fair Value Valuation Technique Unobservable Inputs Range  (In thousands)  State and municipal securities $ 7,324 discounted cash flow discount rate 2.50% - 3.00%  Total $ 7,324      December 31, 2016 Fair Value Valuation Technique Unobservable Inputs Range  (In thousands)  State and municipal securities $ 31,752 discounted cash flow discount rate 2.29% - 4.75%  Total $ 31,752 
Estimated Fair Values And Related Carrying Amounts Of Financial Instruments	   Fair Value Measurements at December 31, 2017:  Carrying Amount Level 1 Level 2 Level 3 Total  (In thousands)  Financial assets:  Cash and cash equivalents $ 51,553 $ 51,553 $ - $ - $ 51,553  Time deposits with banks 254 254 - - 254  Securities available for sale 329,977 - 322,653 7,324 329,977  Securities held to maturity 259,916 - 255,189 2,476 257,665  Bank stocks 24,419 n/a n/a n/a n/a  Loans held for sale 1,725 1,898 - - 1,898  Loans held for investment, net 2,782,413 - - 2,771,262 2,771,262  Accrued interest receivable 11,441 - 11,441 - 11,441   Financial liabilities:  Deposits $ 2,941,627 $ - $ 2,937,584 $ - $ 2,937,584  Securities sold under  agreements to repurchase 44,746 - 44,746 - 44,746  Short-term borrowings 157,444 - 157,444 - 157,444  Subordinated debentures 65,065 - - 61,129 61,129  Long-term borrowings 70,000 - 70,141 - 70,141  Accrued interest payable 1,930 - 1,930 - 1,930  Interest rate swap - cash flow hedge 1,010 - 1,010 - 1,010        Fair Value Measurements at December 31, 2016:  Carrying Amount Level 1 Level 2 Level 3 Total  (In thousands)  Financial assets:  Cash and cash equivalents $ 50,111 $ 50,111 $ - $ - $ 50,111  Time deposits with banks 254 254 - - 254  Securities available for sale 324,228 - 292,476 31,752 324,228  Securities held to maturity 243,979 - 236,857 2,547 239,404  Bank stocks 22,649 n/a n/a n/a n/a  Loans held for sale 4,129 4,542 - - 4,542  Loans held for investment, net 2,491,759 - - 2,504,144 2,504,144  Accrued interest receivable 9,825 - 9,825 - 9,825   Financial liabilities:  Deposits $ 2,699,084 $ - $ 2,696,766 $ - $ 2,696,766  Securities sold under  agreements to repurchase 36,948 - 36,948 - 36,948  Short-term borrowings 124,691 - 124,691 - 124,691  Subordinated debentures 64,981 - - 60,048 60,048  Long-term borrowings 72,477 - 72,769 - 72,769  Accrued interest payable 1,661 - 1,661 - 1,661  Interest rate swap - cash flow hedge 1,929 - 1,929 - 1,929 

Derivatives And Hedging Activ49

Derivatives And Hedging Activities (Tables)	12 Months Ended
	Dec. 31, 2017
Derivatives And Hedging Activities [Abstract]
Schedule Of Derivative Financial Instruments As Well As Their Classification On The Balance Sheet	   Balance  Sheet Fair Value December 31,  Location 2017 2016   (In thousands)  Derivatives designated as hedging instruments  Assets:  Interest rate swaps Other assets $ - $ -  Liabilities:  Interest rate swaps Other liabilities $ 1,010 $ 1,929 
Summary Of Interest Rate Swaps Designated As Cash Flow Hedges	   2017 2016   (Dollars in thousands)  Notional amounts $ 50,000 $ 50,000  Weighted average pay rates 2.73 % 2.73 %  Weighted average receive rates 3 month LIBOR 3 month LIBOR  Weighted average maturity 2.9 years 3.9 years  Unrealized gains (losses) $ (1,010) $ (1,929) 
Schedule Of Derivative Financial Instruments On Both Comprehensive Income And Net Income	   Income  Interest Rate Swaps with Statement December 31,  Hedge Designation Location 2017 2016   (In thousands)  Gain or (loss) recognized in OCI on  derivative - net of tax Not applicable $ 84 $ (183)  (Gain) or loss reclassified from  accumulated OCI into income  (effective portion) - net of tax Interest expense 485 573 

Accumulated Other Comprehensi50

Accumulated Other Comprehensive Income (Tables)	12 Months Ended
	Dec. 31, 2017
Accumulated Other Comprehensive Income [Abstract]
Schedule Of Changes Within AOCI	   Unrealized Gains and Losses on Available for Sale Securities Unrealized Gains and Losses on Held to Maturity Securities Unrealized Gains and Losses on Cash Flow Hedges Total  (In thousands)  Balance, January 1, 2015 $ (965) $ (1,277) $ (885) $ (3,127)  Other comprehensive income (loss)  before reclassifications, net of tax (1,221) - (775) (1,996)  Net unrealized losses on securities transferred  from available for sale, to held to maturity  net of tax 465 (465) - -  Amounts reclassified from accumulated  other comprehensive income (loss), net of tax (82) 265 135 318  Net other comprehensive income (loss) (838) (200) (640) (1,678)  Balance, December 31, 2015 $ (1,803) $ (1,477) $ (1,525) $ (4,805)   Other comprehensive income (loss)  before reclassifications, net of tax $ (2,668) $ - $ (183) $ (2,851)  Net unrealized losses on securities transferred  from available for sale, to held to maturity  net of tax 513 (513) - -  Amounts reclassified from accumulated  other comprehensive income (loss), net of tax 45 312 573 930  Net other comprehensive income (loss) (2,110) (201) 390 (1,921)  Balance, December 31, 2016 $ (3,913) $ (1,678) $ (1,135) $ (6,726)   Other comprehensive income (loss)  before reclassifications, net of tax 1,158 - 84 1,242  Net unrealized losses on securities transferred  from available for sale, to held to maturity  net of tax - - - -  Amounts reclassified from accumulated  other comprehensive income (loss), net of tax 4 301 485 790  Net other comprehensive income (loss) 1,162 301 569 2,032  Balance, December 31, 2017 $ (2,751) $ (1,377) $ (566) $ (4,694) 
Schedule Of Amounts Reclassified Out Of AOCI	  Details about Affected Income Statement  AOCI Components Amount Reclassified from AOCI Line Item  Year Ended December 31,  2017 2016 2015  (In thousands)  Unrealized gains and losses on  available for sale securities $ 6 $ 73 $ (132) (Gain) loss on the sale of securities  (2) (28) 50 Income tax effect  $ 4 $ 45 $ (82) Net income  Unrealized gains and losses on  held to maturity securities $ 486 $ 504 $ 427 Interest income  (185) (192) (162) Income tax effect  $ 301 $ 312 $ 265 Net income  Unrealized gains and losses on  cash flow hedges $ 783 $ 925 $ 218 Interest expense  (298) (352) (83) Income tax effect  $ 485 $ 573 $ 135 Net income   Total reclassifications  for the period $ 790 $ 930 $ 318 Net income 

Regulatory Capital Matters (Tab

Regulatory Capital Matters (Tables)	12 Months Ended
	Dec. 31, 2017
Regulatory Capital Matters [Abstract]
Schedule Of Company's And Bank's Capital Ratios	   Actual Minimum Requirement for “Adequately Capitalized” Institution plus fully phased in Capital Conservation Buffer Minimum Requirement for "Well-Capitalized" Institution  Amount Ratio Amount Ratio Amount Ratio   Dollars in thousands  As of December 31, 2017:  Common Equity Tier 1 Risk-Based  Capital Ratio  Consolidated $ 335,153 10.57 % $ 221,969 7.00 % $ N/A N/A  Guaranty Bank and Trust Company 389,698 12.29 % 221,923 7.00 % 206,071 6.50  Tier 1 Risk-Based Capital Ratio  Consolidated 360,153 11.36 % 269,534 8.50 % N/A N/A  Guaranty Bank and Trust Company 389,698 12.29 % 269,477 8.50 % 253,626 8.00 %  Total Risk-Based Capital Ratio  Consolidated 423,583 13.36 % 332,954 10.50 % N/A N/A  Guaranty Bank and Trust Company 413,128 13.03 % 332,884 10.50 % 317,032 10.00 %  Leverage Ratio  Consolidated 360,153 10.21 % 141,164 4.00 % N/A N/A  Guaranty Bank and Trust Company 389,698 11.05 % 141,075 4.00 % 176,344 5.00 %   As of December 31, 2016:  Common Equity Tier 1 Risk-Based  Capital Ratio  Consolidated $ 296,146 10.46 % $ 198,249 7.00 % $ N/A N/A  Guaranty Bank and Trust Company 351,806 12.43 % 198,111 7.00 % 183,960 6.50  Tier 1 Risk-Based Capital Ratio  Consolidated 321,146 11.34 % 240,731 8.50 % N/A N/A  Guaranty Bank and Trust Company 351,806 12.43 % 240,564 8.50 % 226,413 8.00 %  Total Risk-Based Capital Ratio  Consolidated 384,552 13.58 % 297,373 10.50 % N/A N/A  Guaranty Bank and Trust Company 375,213 13.26 % 297,167 10.50 % 283,016 10.00 %  Leverage Ratio  Consolidated 321,146 9.81 % 130,927 4.00 % N/A N/A  Guaranty Bank and Trust Company 351,806 10.76 % 130,841 4.00 % 163,552 5.00 % 

Parent Company Only Condensed52

Parent Company Only Condensed Financial Information (Tables)	12 Months Ended
	Dec. 31, 2017
Parent Company Only Condensed Financial Information [Abstract]
Schedule Of Condensed Balance Sheets	   Balance Sheets  (Parent Company Only)  December 31, 2017 and 2016   2017 2016   (In thousands)  Assets  Cash $ 11,762 $ 9,469  Investments in subsidiaries 459,443 408,039  Other assets 1,443 2,742  Total assets $ 472,648 $ 420,250   Liabilities and Stockholders' Equity  Liabilities:  Subordinated debentures $ 65,065 $ 64,981  Other liabilities 2,684 2,891  Total liabilities 67,749 67,872  Stockholders' equity:  Common stock 32 31  Common stock - additional paid-in capital 859,509 832,067  Accumulated deficit (343,383) (367,944)  Accumulated other comprehensive loss (4,694) (6,726)  Treasury stock (106,565) (105,050)  Total stockholders' equity 404,899 352,378  Total liabilities and stockholders' equity $ 472,648 $ 420,250  
Schedule Of Consensed Statements Of Income And Comprehensive Income	   Statements of Income and Comprehensive Income  (Parent Company Only)  Years Ended December 31, 2017, 2016 and 2015   2017 2016 2015   (In thousands)  Income:  Management fee - subsidiary bank $ 6,139 $ 8,127 $ 5,129  Dividends from subsidiary bank 18,700 9,800 8,400  Other 1 - 28  Total income 24,840 17,927 13,557  Expenses:  Interest expense 3,440 2,005 814  Salaries and benefits 3,736 3,838 3,325  Professional services 2,083 1,774 1,779  Other 1,633 3,759 953  Total expenses 10,892 11,376 6,871  Income before federal income taxes and equity  in undistributed net income of subsidiaries 13,948 6,551 6,686  Income tax benefit 1,576 1,024 495  Income before equity in undistributed  net income of subsidiaries 15,524 7,575 7,181  Equity in undistributed income of subsidiaries 23,100 17,152 15,273  Net income $ 38,624 $ 24,727 $ 22,454   Other Comprehensive Income (Loss) 2,032 (1,921) (1,678)  Total Comprehensive Income $ 40,656 $ 22,806 $ 20,776 
Schedule Of Consensed Statement Of Cash Flows	   Statements of Cash Flow  (Parent Company Only)  Years Ended December 31, 2017, 2016 and 2015   2017 2016 2015   (In thousands)  Cash flows from operating activities:  Net income $ 38,624 $ 24,727 $ 22,454  Reconciliation of net income to net cash from  operating activities:  Equity based compensation 1,123 1,168 990  Net change in:  Other assets 1,298 1,474 (168)  Other liabilities (122) 1,454 111  Equity in undistributed income  of consolidated subsidiaries (23,100) (17,152) (15,273)  Net cash from operating activities 17,823 11,671 8,114  Cash flows from investing activities:  Cash paid in acquisition, net of cash acquired 48 (32,446) -  Net cash from investing activities 48 (32,446) -  Cash flows from financing activities:  Repurchase of common stock (1,515) (1,307) (616)  Proceeds from issuance of subordinated debt, net  of issuance costs - 39,170 -  Dividends paid (14,063) (10,524) (8,429)  Payment of stock issuance costs related to acquisition - (834) -  Net cash from financing activities (15,578) 26,505 (9,045)  Net change in cash and cash equivalents 2,293 5,730 (931)  Cash and cash equivalents, beginning of year 9,469 3,739 4,670  Cash and cash equivalents, end of year $ 11,762 $ 9,469 $ 3,739 

Quarterly Results Of Operatio53

Quarterly Results Of Operations (Tables)	12 Months Ended
	Dec. 31, 2017
Quarterly Results Of Operations [Abstract]
Schedule Of Quarterly Results Of Operations	2017 Quarterly Results of Operations The table below summarizes the Company’s results of operations on a quarterly basis for the year ended December 31, 2017:     Quarter Ended  December 31, September 30, June 30, March 31,  2017 2017 2017 2017  (In thousands, except share data)   Interest income $ 35,340 $ 34,688 $ 32,933 $ 31,341  Interest expense 3,546 3,354 3,434 3,169  Net interest income 31,794 31,334 29,499 28,172  Provision for loan losses 284 497 206 5  Net interest income after  provision for loan losses 31,510 30,837 29,293 28,167  Noninterest income 6,570 6,130 6,342 6,402  Noninterest expense 23,956 21,807 20,503 20,529  Income before income taxes 14,124 15,160 15,132 14,040  Income tax expense 5,519 5,106 5,007 4,200  Net income $ 8,605 $ 10,054 $ 10,125 $ 9,840   Earnings per common share–basic: $ 0.30 $ 0.36 $ 0.36 $ 0.35  Earnings per common share–diluted: $ 0.30 $ 0.36 $ 0.36 $ 0.35   Loan growth during 2017 contributed to increased interest income. The Company’s fourth quarter income statement was also impacted by the October 27, 2017 closing of the Castle Rock transaction. Noninterest expense increased in the fourth quarter 2017 primarily as a result of incurring $3,319,000 in merger-related expenses. Noninterest expense also grew in 2017 as a result of additional employee and occupancy related expenses driven by the increased size of the organization following the acquisitions in 2016 and 2017. In the fourth quarter 2017, the Company recognized a $976,000 re-measurement of its net deferred tax asset as a result of the President of the United States signing the Tax Cuts and Jobs Act of 2017 in December 2017.  2016 Quarterly Results of Operations     Quarter Ended  December 31, September 30, June 30, March 31,  2016 2016 2016 2016  (In thousands, except share data)   Interest income $ 30,800 $ 25,342 $ 21,851 $ 21,860  Interest expense 2,978 2,592 2,030 1,865  Net interest income 27,822 22,750 19,821 19,995  Provision for loan losses 90 27 10 16  Net interest income after  provision for loan losses 27,732 22,723 19,811 19,979  Noninterest income 6,232 4,705 4,142 4,178  Noninterest expense 23,237 18,624 15,134 15,792  Income before income taxes 10,727 8,804 8,819 8,365  Income tax expense 3,306 3,039 3,133 2,510  Net income $ 7,421 $ 5,765 $ 5,686 $ 5,855   Earnings per common share–basic: $ 0.27 $ 0.25 $ 0.27 $ 0.28  Earnings per common share–diluted: $ 0.26 $ 0.25 $ 0.27 $ 0.27 

Summary of Significant Accoun54

Summary of Significant Accounting Policies (Narrative) (Details)

Feb. 12, 2018$ / shares

Dec. 31, 2017USD ($)$ / sharesshares

Sep. 30, 2017USD ($)

Jun. 30, 2017USD ($)

Mar. 31, 2017USD ($)

Dec. 31, 2016USD ($)$ / sharesshares

Sep. 30, 2016USD ($)

Jun. 30, 2016USD ($)

Mar. 31, 2016USD ($)

Dec. 31, 2018

Dec. 31, 2017USD ($)segment$ / sharespropertyshares

Dec. 31, 2016USD ($)$ / sharesshares

Dec. 31, 2015USD ($)

Oct. 27, 2017USD ($)

Sep. 08, 2016USD ($)

Summary Of Significant Accounting Policies [Line Items]

Impairment, OTTI

$ 0

$ 0

$ 0

PCI loans, carrying amount

$ 1,622,000

$ 1,622,000

Number of portfolio segments | segment

3

Impairment charge

$ 394,000

Number of properties with impairment during the period | property

3

Common stock, par value (in dollars per share) | $ / shares

$ 0.001

$ 0.001

$ 0.001

$ 0.001

Federal tax rate

35.00%

35.00%

35.00%

Re-measurement of net deferred tax asset

$ 976,000

Deferred tax assets, net

$ 1,802,000

$ 4,846,000

1,802,000

$ 4,846,000

Net deferred tax assets valuation allowance

0

0

0

0

Deferred tax assets, unrealized loss on securities and interest rate swaps

1,867,000

4,124,000

1,867,000

4,124,000

Interest and penalties accrued

0

0

$ 0

0

Number of reportable segments | segment

1

Income tax benefit

$ (5,519,000)

$ (5,106,000)

$ (5,007,000)

$ (4,200,000)

$ (3,306,000)

$ (3,039,000)

$ (3,133,000)

$ (2,510,000)

$ (19,832,000)

(11,988,000)

$ (11,270,000)

Available For Sale Securities And Transfers [Member]

Summary Of Significant Accounting Policies [Line Items]

Re-measurement of net deferred tax asset

1,011,000

Scenario, Forecast [Member]

Summary Of Significant Accounting Policies [Line Items]

Federal tax rate

21.00%

New Accounting Pronouncement, Early Adoption, Effect [Member] | Accounting Standards Update 2016-09 [Member]

Summary Of Significant Accounting Policies [Line Items]

Income tax benefit

$ 764,000

528,000

Subsequent Event [Member]

Summary Of Significant Accounting Policies [Line Items]

Dividend payable, date declared

Feb. 12, 2018

Quarterly stock dividend, per share amount | $ / shares

$ 0.1625

Dividends Payable, Date to be Paid

Mar. 2, 2018

Dividends Payable, Date of Record

Feb. 23, 2018

Company Share Repurchase Program [Member]

Summary Of Significant Accounting Policies [Line Items]

Shares authorized for repurchase | shares

1,000,000

1,000,000

Repurchase of common stock (in shares) | shares

0

Home State Acquisition [Member]

Summary Of Significant Accounting Policies [Line Items]

PCI loans at acquisition

$ 2,108,000

PCI loans, carrying amount

$ 2,834,000

Castle Rock Bank [Member]

Summary Of Significant Accounting Policies [Line Items]

PCI loans at acquisition

$ 1,283,000

PCI loans, carrying amount

$ 1,644,000

Sale Of Former Branch Facility [Member]

Summary Of Significant Accounting Policies [Line Items]

Impairment charge

$ 185,000

122,000

2005 Incentive Plan [Member]

Summary Of Significant Accounting Policies [Line Items]

Number of grants authorized | shares

1,700,000

1,700,000

2015 Incentive Plan [Member]

Summary Of Significant Accounting Policies [Line Items]

Number of grants authorized | shares

935,000

935,000

Shares available for grant under Incentive Plan | shares

619,819

728,305

619,819

728,305

Customer Relationship [Member]

Summary Of Significant Accounting Policies [Line Items]

Intangible assets, useful life

10 years

Parent Company [Member]

Summary Of Significant Accounting Policies [Line Items]

Income tax benefit

$ 1,576,000

$ 1,024,000

$ 495,000

Minimum [Member]

Summary Of Significant Accounting Policies [Line Items]

Stock awards vest, service periods

1 year

Minimum [Member] | Accounting Standards Update 2016-02 [Member]

Summary Of Significant Accounting Policies [Line Items]

Effect of accounting change

$ 9,000,000

Minimum [Member] | Core Deposits [Member]

Summary Of Significant Accounting Policies [Line Items]

Intangible assets, useful life

10 years

Minimum [Member] | Buildings And Leasehold Improvements [Member]

Summary Of Significant Accounting Policies [Line Items]

Premises and Equipment, estimated useful life

5 years

Minimum [Member] | Equipment And Software [Member]

Summary Of Significant Accounting Policies [Line Items]

Premises and Equipment, estimated useful life

1 year

Maximum [Member]

Summary Of Significant Accounting Policies [Line Items]

Stock awards vest, service periods

5 years

Maximum [Member] | Accounting Standards Update 2016-02 [Member]

Summary Of Significant Accounting Policies [Line Items]

Effect of accounting change

$ 11,000,000

Maximum [Member] | Core Deposits [Member]

Summary Of Significant Accounting Policies [Line Items]

Intangible assets, useful life

15 years

Maximum [Member] | Buildings And Leasehold Improvements [Member]

Summary Of Significant Accounting Policies [Line Items]

Premises and Equipment, estimated useful life

40 years

Maximum [Member] | Equipment And Software [Member]

Summary Of Significant Accounting Policies [Line Items]

Premises and Equipment, estimated useful life

15 years

Summary of Significant Accoun55

Summary of Significant Accounting Policies (Earnings (Loss) Per Common Share) (Details) - shares		12 Months Ended
		Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Summary of Significant Accounting Policies [Abstract]
Average common shares outstanding		28,056,588	23,267,108	21,065,590
Effect of dilutive unvested stock grants	[1]	287,099	292,839	206,746
Average shares outstanding for calculated diluted earnings per common share		28,343,687	23,559,947	21,272,336
Unvested stock grants		434,149	513,187	590,755
[1]	Unvested stock grants representing 434,149 shares at December 31, 2017 had a dilutive impact of 287,099 shares in the diluted earnings per share calculation. Unvested stock grants representing 513,187 shares at December 31, 2016 had a dilutive impact of 292,839 shares in the diluted earnings per share calculation. Unvested stock grants representing 590,755 shares at December 31, 2015 had a dilutive impact of 206,746 shares in the diluted earnings per share calculation.

Business Combination (Narrative

Business Combination (Narrative) (Details) - USD ($) $ / shares in Units, $ in Thousands	Sep. 08, 2016	Dec. 31, 2016	Dec. 31, 2017	Dec. 31, 2016	Oct. 27, 2017
Business Acquisition [Line Items]
Goodwill		$ 56,404	$ 65,106	$ 56,404
PCI loans, carrying amount			$ 1,622
Castle Rock Bank [Member]
Business Acquisition [Line Items]
Acquisition date			Oct. 27, 2017
Acquisition price			$ 24,421
Value of acquisition			$ 24,421
Shares issued in acquisition			840,629
Value of shares issued in acquisition			$ 24,420
Cash paid, per share acquired			$ 29.05
Cash consideration for acquisition			$ 1
Merger expenses			3,587
Goodwill			8,702		$ 8,702
PCI loans, carrying amount					1,644
Contractual cash flows not expected to be collected					320
PCI loans, Interest rate fair value adjustment					41
PCI loans at acquisition					1,283
Loans not designated PCI, fair value					69,769
Loans not designated PCI, contractual balance					72,220
Loans not designated PCI, purchase discount					$ 1,494
Purchase discount as percent of contractual balance					2.10%
Home State Acquisition [Member]
Business Acquisition [Line Items]
Value of acquisition	$ 152,478		152,478
Shares issued in acquisition	6,533,756
Value of shares issued in acquisition	$ 117,477
Share Price	$ 17.98
Cash consideration for acquisition	$ 35,001
Merger expenses				6,259
Debt issuance costs			830
Stock issuance costs			834
Goodwill	56,404	56,404	56,404	$ 56,404
Reduction in acquired assets		(256)
Goodwill adjustment		$ 256
PCI loans, carrying amount	2,834
Contractual cash flows not expected to be collected	531
PCI loans, Interest rate fair value adjustment	195
PCI loans at acquisition	2,108
Loans not designated PCI, fair value	443,421
Loans not designated PCI, contractual balance	458,014
Loans not designated PCI, purchase discount	$ 8,358
Purchase discount as percent of contractual balance	1.80%
Home State Acquisition [Member] | Excluded Acquisition-Related Costs [Member]
Business Acquisition [Line Items]
Excluded from pro forma income			3,587
Home State Acquisition [Member] | Salaries And Employee Benefit Expense [Member]
Business Acquisition [Line Items]
Merger expenses			1,915
Home State Acquisition [Member] | General and Administrative Expense [Member]
Business Acquisition [Line Items]
Merger expenses			4,344
Home State [Member] | Castle Rock Bank [Member] | Excluded Acquisition-Related Costs [Member]
Business Acquisition [Line Items]
Excluded from pro forma income			$ 139

Business Combination (Schedule

Business Combination (Schedule Of Assets And Liabilities Acquired) (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Oct. 27, 2017	Dec. 31, 2016	Sep. 08, 2016
Business Acquisition [Line Items]
Goodwill	$ 65,106		$ 56,404
Castle Rock Bank [Member]
Business Acquisition [Line Items]
Cash and cash equivalents	21,717
Securities available-for-sale	39,670
Bank stocks	705
Net Loans	71,052
Premises and equipment, net	4,184
Other real estate owned	761
Goodwill	8,702	$ 8,702
Other intangible assets, net	1,870
Bank owned life insurance	3,371
Other assets	1,048
Total assets acquired	153,080
Deposits	128,450
Other liabilities	209
Total liabilities assumed	128,659
Net assets acquired	24,421
Home State Acquisition [Member]
Business Acquisition [Line Items]
Cash and cash equivalents	11,849
Time deposits with banks	504
Securities available-for-sale	396,450
Securities held-to-maturity	850
Bank stocks	1,477
Net Loans	445,529
Premises and equipment, net	22,950
Other real estate owned	45
Goodwill	56,404		$ 56,404	$ 56,404
Other intangible assets, net	11,701
Other assets	8,118
Total assets acquired	955,877
Deposits	769,709
Securities sold under agreement to repurchase and federal funds purchased	19,985
Federal Home Loan Bank term notes	2,525
Federal Home Loan Bank line of credit borrowing	2,052
Other liabilities	9,128
Total liabilities assumed	803,399
Net assets acquired	$ 152,478			$ 152,478

Business Combination (Compositi

Business Combination (Composition Of Acquired Portfolio) (Details) - USD ($) $ in Thousands	Oct. 27, 2017	Sep. 08, 2016
Castle Rock Bank [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total gross loans	$ 71,052
Castle Rock Bank [Member] | Commercial And Residential [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total gross loans	51,531
Castle Rock Bank [Member] | Construction [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total gross loans	6,337
Castle Rock Bank [Member] | Commercial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total gross loans	5,666
Castle Rock Bank [Member] | Agricultural [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total gross loans	3,735
Castle Rock Bank [Member] | Consumer [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total gross loans	$ 3,783
Home State Acquisition [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total gross loans		$ 445,529
Home State Acquisition [Member] | Commercial And Residential [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total gross loans		294,069
Home State Acquisition [Member] | Construction [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total gross loans		39,947
Home State Acquisition [Member] | Commercial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total gross loans		45,996
Home State Acquisition [Member] | Agricultural [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total gross loans		7,906
Home State Acquisition [Member] | Consumer [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total gross loans		16,460
Home State Acquisition [Member] | SBA [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total gross loans		25,227
Home State Acquisition [Member] | Other Loan [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total gross loans		$ 15,924

Business Combination (Schedul59

Business Combination (Schedule Of Pro Forma Financial Information) (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Business Combination [Abstract]
Net interest income	$ 125,203	$ 95,889
Noninterest income	25,952	19,918
Net income	$ 42,178	$ 26,710
Earnings per common share-basic:	$ 1.47	$ 1.11
Earnings per common share-diluted:	$ 1.45	$ 1.09

Securities (Narrative) (Details

Securities (Narrative) (Details)	12 Months Ended
	Dec. 31, 2017USD ($)security	Dec. 31, 2016USD ($)security	Dec. 31, 2015USD ($)
Securities [Abstract]
Investment securities carrying values, pledged	$ 219,621,000	$ 237,036,000
Securities available for pledging	367,587,000	328,946,000
Reclassification Of Available For Sale Mortgage Backed Securities And Asset Backed Securities To Held To Maturity Securities At Fair Value	0	63,432,000	$ 49,084,000
Unrealized pre tax gain (loss) on available for sale securities reclassified		828,000	750,000
Realized gain (loss) on available for sale securities reclassified		$ 0	$ 0
Credit losses on securities	$ 0
Securities in an unrealized loss position | security	255	271
Securities in an unrealized loss position for 12 months or longer | security	194	10
Securities in an unrealized loss position for less than 12 months | security	61	261
Percent of Bank's municipal bond securities that are unrated	4.40%	5.00%

Securities (Fair Value Of Avail

Securities (Fair Value Of Available For Sale Debt Securities) (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Schedule of Available-for-sale Securities [Line Items]
Fair Value	$ 329,977	$ 324,228
Gross Unrealized Gains	1,226	776
Gross Unrealized Losses	(5,664)	(7,088)
Amortized Cost	334,415	330,540
State And Municipal [Member]
Schedule of Available-for-sale Securities [Line Items]
Fair Value	82,486	81,608
Gross Unrealized Gains	530	91
Gross Unrealized Losses	(1,224)	(2,542)
Amortized Cost	83,180	84,059
Mortgage-Backed Securities - Agency/Residential [Member]
Schedule of Available-for-sale Securities [Line Items]
Fair Value	131,180	129,832
Gross Unrealized Gains	133	347
Gross Unrealized Losses	(3,069)	(3,117)
Amortized Cost	134,116	132,602
Mortgage-Backed Securities - Private/Residential [Member]
Schedule of Available-for-sale Securities [Line Items]
Fair Value		265
Gross Unrealized Losses		(6)
Amortized Cost		271
Corporate [Member]
Schedule of Available-for-sale Securities [Line Items]
Fair Value	103,512	86,246
Gross Unrealized Gains	546	288
Gross Unrealized Losses	(1,320)	(1,357)
Amortized Cost	104,286	87,315
Collateralized Loan Obligations [Member]
Schedule of Available-for-sale Securities [Line Items]
Fair Value	12,799	26,277
Gross Unrealized Gains	17	50
Gross Unrealized Losses	(51)	(66)
Amortized Cost	$ 12,833	$ 26,293

Securities (Unrecognized Gains

Securities (Unrecognized Gains And Losses Securities Held To Maturity) (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Schedule of Held-to-maturity Securities [Line Items]
Fair value	$ 257,665	$ 239,404
Gross Unrealized Gains	1,443	1,261
Gross Unrealized Losses	(3,694)	(5,836)
Amortized Cost	259,916	243,979
State And Municipal [Member]
Schedule of Held-to-maturity Securities [Line Items]
Fair value	136,490	118,734
Gross Unrealized Gains	1,121	745
Gross Unrealized Losses	(1,530)	(3,120)
Amortized Cost	136,899	121,109
Mortgage-Backed Securities - Agency/Residential [Member]
Schedule of Held-to-maturity Securities [Line Items]
Fair value	103,925	100,565
Gross Unrealized Gains	315	507
Gross Unrealized Losses	(2,088)	(2,590)
Amortized Cost	105,698	102,648
Asset-Backed [Member]
Schedule of Held-to-maturity Securities [Line Items]
Fair value	16,050	18,905
Gross Unrealized Gains	7	9
Gross Unrealized Losses	(76)	(126)
Amortized Cost	16,119	19,022
Other [Member]
Schedule of Held-to-maturity Securities [Line Items]
Fair value	1,200	1,200
Amortized Cost	$ 1,200	$ 1,200

Securities (Proceeds From Sales

Securities (Proceeds From Sales And Calls Of Securities) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Securities [Abstract]
Proceeds	$ 80,027	$ 370,111	$ 27,985
Gross gains	334	2,486	217
Gross losses	(340)	(2,608)	(85)
Net tax (benefit) expense related to gains (losses) on sale	$ (2)	$ (46)	$ 50

Securities (Investments Classif

Securities (Investments Classified by Contractual Maturity Date) (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Schedule Of Available For Sale And Held To Maturity Securities [Line Items]
Due in one year or less, Amortized Cost	$ 6,041
Due after one years through five years, Amortized cost	18,949
Due after five years through ten years, Amortized cost	107,156
Due after ten years, Amortized cost	55,320
Total AFS, excluding mortgage-backed (MBS) and collateralized loan obligations, Amortized cost	187,466
Mortgage-backed and collateralized loan obligations, Amortized cost	146,949
Total securities available for sale, Amortized cost	334,415
Due in one year or less, Fair value	6,058
Due after one year through five years, Fair value	18,956
Due after five years through ten years, Fair value	105,554
Due after ten years, Fair value	55,430
Total AFS, excluding mortgage-backed (MBS) and collateralized loan obligations, Fair Value	185,998
Mortgage-backed and collateralized loan obligations, Fair value	143,979
Total securities available for sale, Fair value	329,977	$ 324,228
Securities held to maturity, Due in one year or less, Amortized cost	1,504
Securities held to maturity, Due after one year through five years, Amortized cost	15,699
Securities held to maturity, Due after five years through ten years, Amortized cost	75,282
Securities held to maturity, Due after ten years, Amortized cost	45,614
Total HTM, excluding MBS and asset-backed, Amortized cost	138,099
Total securities held to maturity, Amortized cost	259,916	243,979
Securities held to maturity, Due in one year or less, Fair value	1,524
Securities held to maturity, Due after one year through five years, Fair value	15,672
Securities held to maturity, Due after five years through ten years, Fair value	74,774
Securities held to maturity, Due after ten years, Fair value	45,720
Total HTM, excluding MBS and asset-backed, Fair value	137,690
Total securities held to maturity, Fair value	257,665	$ 239,404
Mortgage Backed and Asset Backed Securities [Member]
Schedule Of Available For Sale And Held To Maturity Securities [Line Items]
Securities held to maturity, Amortized cost	121,817
Securities held to maturity, Fair value	$ 119,975

Securities (Fair Value And The

Securities (Fair Value And The Unrealized Loss On Temporarily Impaired Securities) (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Fair Value And The Unrealized Loss On Temporarily Impaired Securities [Line Items]
Held to maturity, Total, Unrealized losses	$ (3,694)	$ (5,836)
Total temporarily impaired, Less than 12 months, Fair value	133,245	407,218
Total temporarily impaired, More than 12 months, Fair Value	305,382	24,511
Total temporarily impaired, Total, Fair value	438,627	431,729
Total temporarily impaired, Less than 12 months, Unrealized losses	(1,306)	(14,177)
Total temporarily impaired, More than 12 months, Unrealized losses	(9,877)	(1,056)
Total temporarily impaired, Total, Unrealized losses	(11,183)	(15,233)
State And Municipal [Member]
Fair Value And The Unrealized Loss On Temporarily Impaired Securities [Line Items]
Available for sale, Less than 12 months, Fair value	8,710	47,434
Available for sale, 12 months or more, Fair value	36,894
Available for sale, Total, Fair value	45,604	47,434
Available for sale, Less than 12 months, Unrealized losses	(82)	(2,542)
Available for sale, 12 months or more, Unrealized losses	(1,142)
Available for sale, Total, Unrealized losses	(1,224)	(2,542)
Held to maturity, Less than 12 months, Fair value	18,521	90,959
Held to maturity, 12 months or more, Fair value	69,314	596
Held to maturity, Total, Fair value	87,835	91,555
Held to maturity, Less than 12 months, Unrealized losses	(167)	(3,804)
Held to maturity, 12 months or more, Unrealized losses	(2,057)	(259)
Held to maturity, Total, Unrealized losses	(2,224)	(4,063)
Mortgage-Backed Securities - Agency/Residential [Member]
Fair Value And The Unrealized Loss On Temporarily Impaired Securities [Line Items]
Available for sale, Less than 12 months, Fair value	43,494	93,909
Available for sale, 12 months or more, Fair value	77,909	9,526
Available for sale, Total, Fair value	121,403	103,435
Available for sale, Less than 12 months, Unrealized losses	(315)	(2,782)
Available for sale, 12 months or more, Unrealized losses	(2,754)	(335)
Available for sale, Total, Unrealized losses	(3,069)	(3,117)
Held to maturity, Less than 12 months, Fair value	19,721	99,920
Held to maturity, 12 months or more, Fair value	78,472
Held to maturity, Total, Fair value	98,193	99,920
Held to maturity, Less than 12 months, Unrealized losses	(162)	(3,442)
Held to maturity, 12 months or more, Unrealized losses	(2,685)
Held to maturity, Total, Unrealized losses	(2,847)	(3,442)
Mortgage-Backed Securities - Private/Residential [Member]
Fair Value And The Unrealized Loss On Temporarily Impaired Securities [Line Items]
Available for sale, Less than 12 months, Fair value		265
Available for sale, Total, Fair value		265
Available for sale, Less than 12 months, Unrealized losses		(6)
Available for sale, Total, Unrealized losses		(6)
Corporate [Member]
Fair Value And The Unrealized Loss On Temporarily Impaired Securities [Line Items]
Available for sale, Less than 12 months, Fair value	38,267	49,964
Available for sale, 12 months or more, Fair value	23,731	5,685
Available for sale, Total, Fair value	61,998	55,649
Available for sale, Less than 12 months, Unrealized losses	(567)	(1,042)
Available for sale, 12 months or more, Unrealized losses	(753)	(315)
Available for sale, Total, Unrealized losses	(1,320)	(1,357)
Collateralized Loan Obligations [Member]
Fair Value And The Unrealized Loss On Temporarily Impaired Securities [Line Items]
Available for sale, Less than 12 months, Fair value	4,532	9,077
Available for sale, 12 months or more, Fair value	3,011	5,488
Available for sale, Total, Fair value	7,543	14,565
Available for sale, Less than 12 months, Unrealized losses	(13)	(17)
Available for sale, 12 months or more, Unrealized losses	(38)	(49)
Available for sale, Total, Unrealized losses	(51)	(66)
Asset-Backed [Member]
Fair Value And The Unrealized Loss On Temporarily Impaired Securities [Line Items]
Held to maturity, Less than 12 months, Fair value		15,690
Held to maturity, 12 months or more, Fair value	16,051	3,216
Held to maturity, Total, Fair value	16,051	18,906
Held to maturity, Less than 12 months, Unrealized losses		(542)
Held to maturity, 12 months or more, Unrealized losses	(448)	(98)
Held to maturity, Total, Unrealized losses	$ (448)	$ (640)

Bank Stocks (Details)

Bank Stocks (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Bank Stocks Disclosure [Line Items]
Totals	$ 24,419	$ 22,649
Federal Reserve Bank Of Kansas City [Member]
Bank Stocks Disclosure [Line Items]
Totals	12,495	12,104
Other Bank Stocks Securities [Member]
Bank Stocks Disclosure [Line Items]
Totals	1,689	1,650
Federal Home Loan Bank Of Topeka [Member]
Bank Stocks Disclosure [Line Items]
Totals	$ 10,235	$ 8,895

Loans (Narrative) (Details)

Loans (Narrative) (Details)	12 Months Ended
	Dec. 31, 2017USD ($)loan	Dec. 31, 2016USD ($)loan	Dec. 31, 2015USD ($)
Financing Receivable, Modifications [Line Items]
Purchase of performing loans	$ 98,940,000	$ 109,519,000
Gross year-to-date interest income on nonaccrual loans	252,000	257,000	$ 586,000
Income recognized on nonaccrual loans prior to impairment	93,000	163,000	90,000
Cash basis interest income	0	332,000	$ 118,000
Interest income recognized during impairment	2,780,000	2,291,000
Book balance of troubled debt restructurings	19,256,000	25,219,000
Specific reserves	$ 53,000	$ 74,000
Number of loans modified in troubled debt restructuring | loan	33	19
Pre-Modification Outstanding Recorded Investment	$ 12,062,000	$ 7,765,000
Additional amounts committed on a single loan classified as a trouble debt restructuring	$ 4,181,000	2,238,000
Number of TDR's defaulted | loan	0
Troubled debt restructurings charge-off	$ 0	$ 0
Payment Terms [Member]
Financing Receivable, Modifications [Line Items]
Number of loans modified in troubled debt restructuring | loan	19	10
Loan Renewal [Member]
Financing Receivable, Modifications [Line Items]
Number of loans modified in troubled debt restructuring | loan	14	9

Loans (Loans Held For Investmen

Loans (Loans Held For Investment By Loan Type) (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	$ 2,805,799	$ 2,515,070
Deferred (fees) and costs	(136)	(61)
Loans, held for investment, net	2,805,663	2,515,009
Less allowance for loan losses	(23,250)	(23,250)
Net loans, held for investment	2,782,413	2,491,759
Commercial And Residential [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	1,977,431	1,768,424
Construction [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	99,965	88,451
Commercial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	523,355	461,666
Agricultural [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	16,995	16,690
Consumer [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	143,066	125,264
SBA [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	44,121	52,380
Other Loan [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	$ 866	$ 2,195

Loans (Allowance For Loan Losse

Loans (Allowance For Loan Losses) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Loans [Abstract]
Balance, beginning of period	$ 23,250	$ 23,000	$ 22,490
Provision for loan losses	992	143	96
Loans charged-off	(1,550)	(721)	(238)
Recoveries on loans previously charged-off	558	828	652
Balance, end of period	$ 23,250	$ 23,250	$ 23,000

Loans (Allowance For Loan Los70

Loans (Allowance For Loan Losses And Loans Held For Investment By Portfolio Segment) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2017	Dec. 31, 2016
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance, beginning of period	$ 23,250	$ 23,000	$ 22,490
Charge-offs	(1,550)	(721)	(238)
Recoveries	558	828	652
Provision (credit)	992	143	96
Balance, end of period	23,250	23,250	23,000
Allowance for Loan Losses, Individually evaluated				$ 1,122	$ 222
Allowance for Loan Losses, Collectively evaluated				22,128	23,028
Allowance for Loan Losses, Total	23,250	23,000	22,490	23,250	23,250
Loans, Individually evaluated				23,620	30,375
Loans, Collectively evaluated				2,782,043	2,484,634
Loans, Total				2,805,663	2,515,009
Real Estate [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance, beginning of period	20,082	20,306	19,607
Charge-offs	(386)	(217)	(21)
Recoveries	132	340	284
Provision (credit)	(1,283)	(347)	436
Balance, end of period	18,545	20,082	20,306
Allowance for Loan Losses, Individually evaluated				1	29
Allowance for Loan Losses, Collectively evaluated				18,544	20,053
Allowance for Loan Losses, Total	20,082	20,306	19,607	18,545	20,082
Loans, Individually evaluated				11,256	22,728
Loans, Collectively evaluated				2,225,944	2,024,524
Loans, Total				2,237,200	2,047,252
Consumer And Installment [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance, beginning of period	105	71	39
Charge-offs	(106)	(51)	(12)
Recoveries	91	14	29
Provision (credit)	220	71	15
Balance, end of period	310	105	71
Allowance for Loan Losses, Collectively evaluated				310	105
Allowance for Loan Losses, Total	105	71	39	310	105
Loans, Individually evaluated				1	2
Loans, Collectively evaluated				74,675	55,182
Loans, Total				74,676	55,184
Commercial & Industrial And Other [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance, beginning of period	3,063	2,623	2,844
Charge-offs	(1,058)	(453)	(205)
Recoveries	335	474	339
Provision (credit)	2,055	419	(355)
Balance, end of period	4,395	3,063	2,623
Allowance for Loan Losses, Individually evaluated				1,121	193
Allowance for Loan Losses, Collectively evaluated				3,274	2,870
Allowance for Loan Losses, Total	$ 3,063	$ 2,623	$ 2,844	4,395	3,063
Loans, Individually evaluated				12,363	7,645
Loans, Collectively evaluated				481,424	404,928
Loans, Total				$ 493,787	$ 412,573

Loans (Schedule Of Impaired Loa

Loans (Schedule Of Impaired Loans) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Financing Receivable, Impaired [Line Items]
Impaired loans with no related allowance, Recorded Investment	$ 13,587	$ 21,534
Impaired loans with related allowance, Recorded Investment	10,033	8,841
Total Impaired Loans, Recorded Investment	23,620	30,375
Impaired loans with no related allowance, Unpaid Balance	15,521	23,013
Impaired loans with related allowance, Unpaid Balance	10,270	9,140
Total Impaired Loans, Unpaid Balance	25,791	32,153
Total Impaired Loans, Related Allowance	1,122	222
Impaired loans with no related allowance, Average Recorded Investment YTD	18,206	15,320
Impaired loans with related allowance, Average Recorded Investment YTD	7,005	12,264
Total Impaired Loans, Average Related Investment YTD	25,211	27,584
Impaired loans with no related allowance, Interest Income Recognized YTD	2,309	1,929
Impaired loans with related allowance, Interest Income Recognized YTD	471	362
Total Impaired Loans, Interest Income Recognized YTD	2,780	2,291
Commercial And Residential Real Estate [Member]
Financing Receivable, Impaired [Line Items]
Impaired loans with no related allowance, Recorded Investment	9,981	20,477
Impaired loans with related allowance, Recorded Investment	46	1,767
Total Impaired Loans, Recorded Investment	10,027	22,244
Impaired loans with no related allowance, Unpaid Balance	10,705	21,140
Impaired loans with related allowance, Unpaid Balance	157	1,890
Total Impaired Loans, Unpaid Balance	10,862	23,030
Total Impaired Loans, Related Allowance	1	19
Impaired loans with no related allowance, Average Recorded Investment YTD	16,166	13,875
Impaired loans with related allowance, Average Recorded Investment YTD	779	8,590
Total Impaired Loans, Average Related Investment YTD	16,945	22,465
Impaired loans with no related allowance, Interest Income Recognized YTD	2,052	1,911
Impaired loans with related allowance, Interest Income Recognized YTD		44
Total Impaired Loans, Interest Income Recognized YTD	2,052	1,955
Construction Loans [Member]
Financing Receivable, Impaired [Line Items]
Impaired loans with no related allowance, Average Recorded Investment YTD		592
Total Impaired Loans, Average Related Investment YTD		592
Commercial [Member]
Financing Receivable, Impaired [Line Items]
Impaired loans with no related allowance, Recorded Investment	1,006	222
Impaired loans with related allowance, Recorded Investment	9,807	6,371
Total Impaired Loans, Recorded Investment	10,813	6,593
Impaired loans with no related allowance, Unpaid Balance	1,553	229
Impaired loans with related allowance, Unpaid Balance	9,899	6,423
Total Impaired Loans, Unpaid Balance	11,452	6,652
Total Impaired Loans, Related Allowance	1,120	155
Impaired loans with no related allowance, Average Recorded Investment YTD	886	243
Impaired loans with related allowance, Average Recorded Investment YTD	5,262	2,937
Total Impaired Loans, Average Related Investment YTD	6,148	3,180
Impaired loans with no related allowance, Interest Income Recognized YTD	195	16
Impaired loans with related allowance, Interest Income Recognized YTD	447	309
Total Impaired Loans, Interest Income Recognized YTD	642	325
Consumer [Member]
Financing Receivable, Impaired [Line Items]
Impaired loans with no related allowance, Recorded Investment	367	18
Impaired loans with related allowance, Recorded Investment	180	306
Total Impaired Loans, Recorded Investment	547	324
Impaired loans with no related allowance, Unpaid Balance	425	19
Impaired loans with related allowance, Unpaid Balance	214	383
Total Impaired Loans, Unpaid Balance	639	402
Total Impaired Loans, Related Allowance	1	9
Impaired loans with no related allowance, Average Recorded Investment YTD	88	117
Impaired loans with related allowance, Average Recorded Investment YTD	329	389
Total Impaired Loans, Average Related Investment YTD	417	506
Impaired loans with no related allowance, Interest Income Recognized YTD		2
Impaired loans with related allowance, Interest Income Recognized YTD	18	9
Total Impaired Loans, Interest Income Recognized YTD	18	11
Other [Member]
Financing Receivable, Impaired [Line Items]
Impaired loans with no related allowance, Recorded Investment	2,233	817
Impaired loans with related allowance, Recorded Investment		397
Total Impaired Loans, Recorded Investment	2,233	1,214
Impaired loans with no related allowance, Unpaid Balance	2,838	1,625
Impaired loans with related allowance, Unpaid Balance		444
Total Impaired Loans, Unpaid Balance	2,838	2,069
Total Impaired Loans, Related Allowance		39
Impaired loans with no related allowance, Average Recorded Investment YTD	1,066	493
Impaired loans with related allowance, Average Recorded Investment YTD	635	348
Total Impaired Loans, Average Related Investment YTD	1,701	$ 841
Impaired loans with no related allowance, Interest Income Recognized YTD	62
Impaired loans with related allowance, Interest Income Recognized YTD	6
Total Impaired Loans, Interest Income Recognized YTD	$ 68

Loans (Summary Of Past Due Loan

Loans (Summary Of Past Due Loans By Class) (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-89 Days Past Due	$ 2,869	$ 1,337
Nonaccrual Loans	5,554	5,247
Total Nonaccrual and Past Due	8,423	6,584
Total Loans	2,805,663	2,515,009
Commercial And Residential Real Estate [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-89 Days Past Due	410	1,258
Nonaccrual Loans	1,750	2,835
Total Nonaccrual and Past Due	2,160	4,093
Total Loans	1,977,335	1,768,381
Construction Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Loans	99,960	88,449
Commercial [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-89 Days Past Due	1,663	37
Nonaccrual Loans	2,079	1,094
Total Nonaccrual and Past Due	3,742	1,131
Total Loans	523,330	461,655
Consumer [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-89 Days Past Due	469	42
Nonaccrual Loans	444	201
Total Nonaccrual and Past Due	913	243
Total Loans	143,059	125,261
Other [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-89 Days Past Due	327
Nonaccrual Loans	1,281	1,117
Total Nonaccrual and Past Due	1,608	1,117
Total Loans	$ 61,979	$ 71,263

Loans (Summary Of The Risk Cate

Loans (Summary Of The Risk Category Of Loans By Class Of Loans) (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Financing Receivable, Recorded Investment [Line Items]
Gross loans	$ 2,805,799	$ 2,515,070
Deferred (fees) and costs	(136)	(61)
Loans, held for investment, net	2,805,663	2,515,009
Non-classified [Member]
Financing Receivable, Recorded Investment [Line Items]
Gross loans	2,778,230	2,482,196
Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Gross loans	27,569	32,874
Commercial And Residential Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Gross loans	1,977,431	1,768,424
Deferred (fees) and costs	(96)	(43)
Loans, held for investment, net	1,977,335	1,768,381
Commercial And Residential Real Estate [Member] | Non-classified [Member]
Financing Receivable, Recorded Investment [Line Items]
Gross loans	1,964,934	1,742,974
Commercial And Residential Real Estate [Member] | Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Gross loans	12,497	25,450
Construction Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Gross loans	99,965	88,451
Deferred (fees) and costs	(5)	(2)
Loans, held for investment, net	99,960	88,449
Construction Loans [Member] | Non-classified [Member]
Financing Receivable, Recorded Investment [Line Items]
Gross loans	99,965	88,451
Commercial [Member]
Financing Receivable, Recorded Investment [Line Items]
Gross loans	523,355	461,666
Deferred (fees) and costs	(25)	(11)
Loans, held for investment, net	523,330	461,655
Commercial [Member] | Non-classified [Member]
Financing Receivable, Recorded Investment [Line Items]
Gross loans	513,563	456,861
Commercial [Member] | Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Gross loans	9,792	4,805
Consumer [Member]
Financing Receivable, Recorded Investment [Line Items]
Gross loans	143,066	125,264
Deferred (fees) and costs	(7)	(3)
Loans, held for investment, net	143,059	125,261
Consumer [Member] | Non-classified [Member]
Financing Receivable, Recorded Investment [Line Items]
Gross loans	142,512	124,932
Consumer [Member] | Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Gross loans	554	332
Other [Member]
Financing Receivable, Recorded Investment [Line Items]
Gross loans	61,982	71,265
Deferred (fees) and costs	(3)	(2)
Loans, held for investment, net	61,979	71,263
Other [Member] | Non-classified [Member]
Financing Receivable, Recorded Investment [Line Items]
Gross loans	57,256	68,978
Other [Member] | Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Gross loans	$ 4,726	$ 2,287

Loans (Loans By Class Modified

Loans (Loans By Class Modified As Troubled Debt Restructurings) (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2017USD ($)loan	Dec. 31, 2016USD ($)loan
Financing Receivable, Modifications [Line Items]
Number of Loans | loan	33	19
Pre-Modification Outstanding Recorded Investment	$ 12,062	$ 7,765
Post-Modification Outstanding Recorded Investment	$ 12,062	$ 7,765
Commercial And Residential Real Estate [Member]
Financing Receivable, Modifications [Line Items]
Number of Loans | loan	12	2
Pre-Modification Outstanding Recorded Investment	$ 2,935	$ 1,018
Post-Modification Outstanding Recorded Investment	$ 2,935	$ 1,018
Commercial [Member]
Financing Receivable, Modifications [Line Items]
Number of Loans | loan	15	16
Pre-Modification Outstanding Recorded Investment	$ 7,991	$ 6,650
Post-Modification Outstanding Recorded Investment	$ 7,991	$ 6,650
Consumer [Member]
Financing Receivable, Modifications [Line Items]
Number of Loans | loan	1
Pre-Modification Outstanding Recorded Investment	$ 51
Post-Modification Outstanding Recorded Investment	$ 51
Other [Member]
Financing Receivable, Modifications [Line Items]
Number of Loans | loan	5	1
Pre-Modification Outstanding Recorded Investment	$ 1,085	$ 97
Post-Modification Outstanding Recorded Investment	$ 1,085	$ 97

Premises And Equipment (Narrati

Premises And Equipment (Narrative) (Details) - USD ($)	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Property, Plant and Equipment [Line Items]
Depreciation expense	$ 2,971,000	$ 2,713,000	$ 2,747,000
Rent expense	$ 1,704,000	$ 1,849,000	$ 2,213,000
Maximum [Member]
Property, Plant and Equipment [Line Items]
Options to extend the lease period	21 years
Minimum [Member]
Property, Plant and Equipment [Line Items]
Options to extend the lease period	5 years

Premises And Equipment (Summary

Premises And Equipment (Summary Of Cost, Accumulated Depreciation, And Amoritazation Of Premises And Equipment) (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Property, Plant and Equipment [Line Items]
Subtotal	$ 96,394	$ 96,391
Accumulated depreciation and amortization	(30,520)	(29,001)
Total premises and equipment	65,874	67,390
Land [Member]
Property, Plant and Equipment [Line Items]
Subtotal	15,354	16,826
Buildings [Member]
Property, Plant and Equipment [Line Items]
Subtotal	59,060	58,637
Leasehold Improvements [Member]
Property, Plant and Equipment [Line Items]
Subtotal	3,790	3,691
Equipment And Software[Member]
Property, Plant and Equipment [Line Items]
Subtotal	17,506	16,553
Leasehold Interest In Land [Member]
Property, Plant and Equipment [Line Items]
Subtotal	$ 684	$ 684

Premises And Equipment (Summa77

Premises And Equipment (Summary Of Future Minimum Rent Commitments) (Details) $ in Thousands	Dec. 31, 2017USD ($)
Premises And Equipment [Abstract]
2,018	$ 1,721
2,019	1,698
2,020	1,724
2,021	1,664
2,022	1,316
Thereafter	3,407
Total	$ 11,530

Goodwill And Other Intangible78

Goodwill And Other Intangible Assets (Narrative) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015	Oct. 27, 2017	Sep. 08, 2016
Goodwill [Line Items]
Goodwill	$ 65,106	$ 56,404
Amortization expense	2,745	1,557	$ 1,981
Castle Rock Bank [Member]
Goodwill [Line Items]
Goodwill	8,702			$ 8,702
Home State Acquisition [Member]
Goodwill [Line Items]
Goodwill	$ 56,404	$ 56,404			$ 56,404

Goodwill And Other Intangible79

Goodwill And Other Intangible Assets (Schedule Of Finite Lived Intangible Assets And Related Accumulated Amortization) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Finite-Lived Intangible Assets [Line Items]
Intangible assets, net	$ 14,441	$ 15,317
Core Deposits [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible assets	75,956	74,087
Intangible asset accumulated amortization	(65,272)	(63,112)
Intangible assets, net	$ 10,684	10,975
Core Deposits [Member] | Maximum [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible assets, Useful life	15 years
Core Deposits [Member] | Minimum [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible assets, Useful life	10 years
Customer Relationship [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible assets	$ 6,243	6,243
Intangible asset accumulated amortization	(2,486)	(1,901)
Intangible assets, net	$ 3,757	$ 4,342
Intangible assets, Useful life	10 years

Goodwill And Other Intangible80

Goodwill And Other Intangible Assets (Amortization Of Intangible Assets) (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Goodwill And Other Intangible Assets [Abstract]
2,018	$ 2,705
2,019	2,188
2,020	1,935
2,021	1,795
2,022	1,597
Thereafter	4,221
Intangible assets, net	$ 14,441	$ 15,317

Deposits (Narrative) (Details)

Deposits (Narrative) (Details) - USD ($)	Dec. 31, 2017	Dec. 31, 2016
Deposits [Abstract]
Time deposits in denomination if $250,000 or more	$ 88,449,000	$ 56,018,000
Brokered time deposits	95,299,000	94,338,000
Brokered money market accounts	25,035,000	15,006,000
Reciprocal time deposits	$ 0	$ 1,206,000

Deposits (Schedule Of Maturitie

Deposits (Schedule Of Maturities Of Time Deposits) (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Deposits [Abstract]
2,018	$ 339,410
2,019	81,482
2,020	21,279
2,021	8,983
2,022	7,733
Time Deposits, Total	$ 458,887	$ 365,787

Securities Sold Under Agreeme83

Securities Sold Under Agreements To Repurchase (Narrative) (Details) - USD ($)	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Assets Sold under Agreements to Repurchase [Line Items]
Securities sold under agreement to repurchase, carrying value	$ 44,746,000	$ 36,948,000
Maximum [Member]
Assets Sold under Agreements to Repurchase [Line Items]
Repurchase agreements, maturity period	4 days
Minimum [Member]
Assets Sold under Agreements to Repurchase [Line Items]
Repurchase agreements, maturity period	1 day
Collateralized Mortgage Backed Securities [Member]
Assets Sold under Agreements to Repurchase [Line Items]
Securities sold under agreement to repurchase, carrying value	$ 57,183,000	$ 42,825,000

Securities Sold Under Agreeme84

Securities Sold Under Agreements To Repurchase (Information Pertaining To Securities Sold Under Agreement To Repurchase) (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Securities Sold Under Agreements To Repurchase [Abstract]
Ending balance	$ 44,746	$ 36,948
Weighted-average interest rate at year-end	0.20%	0.19%

Securities Sold Under Agreeme85

Securities Sold Under Agreements To Repurchase (Summary Of Balances For Securities Sold Under Agreements To Repurchase) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Securities Sold Under Agreements To Repurchase [Abstract]
Average daily balance during the year	$ 37,332	$ 25,221	$ 24,531
Average interest rate during the year	0.19%	0.21%	0.18%
Maximum month-end balance during the year	$ 48,391	$ 38,089	$ 31,977

Borrowings (Narrative) (Details

Borrowings (Narrative) (Details)	12 Months Ended
	Dec. 31, 2017USD ($)loan	Dec. 31, 2016USD ($)
Debt Instrument [Line Items]
Outstanding borrowings	$ 227,444,000	$ 197,168,000
FHLB outstanding borrowings	70,000,000	72,477,000
Total short-term borrowings, Principal	$ 157,444,000	124,691,000
Number of FHLB Loans | loan	3
Pledging and security agreement with FHLB	$ 706,251,000	597,202,000
Remaining credit allowance for future borrowings	$ 477,474,000	400,102,000
Interest rate on the line of credit	1.47%
FHLB Term Notes (Fixed Rate) [Member]
Debt Instrument [Line Items]
FHLB outstanding borrowings	$ 20,000,000	22,477,000
FHLB, Maturity date	Jan. 23, 2018
Fixed Interest Rate Term Note 2.52% [Member] | FHLB Term Notes (Fixed Rate) [Member]
Debt Instrument [Line Items]
FHLB outstanding borrowings	$ 20,000,000
FHLB, interest rate	2.52%
FHLB, Maturity date	Jan. 23, 2018
FHLB Term Note 1 (Variable Rate) [Member] | FHLB Term Notes (Variable Rate) [Member]
Debt Instrument [Line Items]
FHLB outstanding borrowings	$ 25,000,000	$ 25,000,000
FHLB, interest rate	1.48%	1.15%
FHLB, Maturity date	Mar. 7, 2018	Mar. 7, 2017
FHLB Term Note 2 (Variable Rate) [Member] | FHLB Term Notes (Variable Rate) [Member]
Debt Instrument [Line Items]
FHLB outstanding borrowings	$ 25,000,000	$ 25,000,000
FHLB, interest rate	1.45%	0.96%
FHLB, Maturity date	Aug. 3, 2018	Aug. 4, 2017
Correspondent Banks [Member]
Debt Instrument [Line Items]
Remaining credit allowance for future borrowings	$ 62,400,000	$ 64,005,000
Maximum [Member] | FHLB Term Notes (Fixed Rate) [Member]
Debt Instrument [Line Items]
FHLB, interest rate		6.38%
Minimum [Member] | FHLB Term Notes (Fixed Rate) [Member]
Debt Instrument [Line Items]
FHLB, interest rate	2.52%	2.52%

Borrowings (Summary Of Borrowin

Borrowings (Summary Of Borrowings) (Details) - USD ($)	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Debt Instrument [Line Items]
Total short-term borrowings, Principal	$ 157,444,000	$ 124,691,000
Long-term borrowings	70,000,000	72,477,000
Total borrowings	227,444,000	197,168,000
FHLB Line Of Credit [Member]
Debt Instrument [Line Items]
Total short-term borrowings, Principal	$ 157,444,000	$ 124,691,000
FHLB, interest rate	1.47%	0.72%
FHLB line of credit, Total Committed	$ 706,251,000	$ 597,202,000
FHLB Term Notes (Fixed Rate) [Member]
Debt Instrument [Line Items]
Long-term borrowings	$ 20,000,000	$ 22,477,000
FHLB term notes, Maturity date, Earliest		2,017
FHLB term notes, Maturity date, Last		2,018
FHLB, Maturity date	Jan. 23, 2018
FHLB Term Notes (Fixed Rate) [Member] | Minimum [Member]
Debt Instrument [Line Items]
FHLB, interest rate	2.52%	2.52%
FHLB Term Notes (Fixed Rate) [Member] | Maximum [Member]
Debt Instrument [Line Items]
FHLB, interest rate		6.38%
FHLB Term Notes (Variable Rate) [Member] | FHLB Term Note 1 (Variable Rate) [Member]
Debt Instrument [Line Items]
Long-term borrowings	$ 25,000,000	$ 25,000,000
FHLB, interest rate	1.48%	1.15%
FHLB, Maturity date	Mar. 7, 2018	Mar. 7, 2017
FHLB Term Notes (Variable Rate) [Member] | FHLB Term Note 2 (Variable Rate) [Member]
Debt Instrument [Line Items]
Long-term borrowings	$ 25,000,000	$ 25,000,000
FHLB, interest rate	1.45%	0.96%
FHLB, Maturity date	Aug. 3, 2018	Aug. 4, 2017

Borrowings (Summary Of Borrow88

Borrowings (Summary Of Borrowings On The FHLB Line Of Credit) (Details) - FHLB Line Of Credit [Member] - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]
Average daily balance during the year	$ 73,042	$ 81,539	$ 130,152
Average interest rate during the year	0.99%	0.55%	0.28%
Maximum month-end balance during the year	$ 157,444	$ 185,700	$ 212,065

Income Taxes (Narrative) (Detai

Income Taxes (Narrative) (Details) - USD ($)	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Income Taxes [Line Items]
Current taxes receivable	$ 100,000	$ 2,090,000
Re-measurement of net deferred tax asset	976,000
Net deferred tax assets valuation allowance	0	$ 0
AMT credit carryforward	0
Unrecognized Tax Benefits	0
Federal [Member]
Income Taxes [Line Items]
Net operating loss carryforward	0
State [Member]
Income Taxes [Line Items]
Net operating loss carryforward	$ 0

Income Taxes (Schedule Of Compo

Income Taxes (Schedule Of Components Of Income Tax Benefit) (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Income Taxes [Abstract]
Current tax expense, Federal									$ 15,894	$ 11,921	$ 7,165
Current tax expense, State									2,215	427
Total current tax expense									18,109	12,348	7,165
Deferred tax expense, Federal									626	(1,026)	3,132
Deferred tax expense, Re-measurement of net deferred tax asset									976
Deferred tax expense, State									121	666	973
Total deferred tax expense (benefit)									1,723	(360)	4,105
Total tax expense	$ 5,519	$ 5,106	$ 5,007	$ 4,200	$ 3,306	$ 3,039	$ 3,133	$ 2,510	$ 19,832	$ 11,988	$ 11,270

Income Taxes (Reconciliation Of

Income Taxes (Reconciliation Of Effective Income Tax Rate From The Statutory Federal Rate) (Details)	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Income Taxes [Abstract]
Tax expense at statutory federal rate	35.00%	35.00%	35.00%
State tax, net of federal benefit	2.70%	2.70%	2.80%
Tax exempt income	(4.80%)	(5.10%)	(4.40%)
Re-measurement of net deferred tax asset related to 2017 Tax Cut and Jobs Act	1.70%
Other	(0.70%)	0.10%
Effective tax rate	33.90%	32.70%	33.40%

Income Taxes (Schedule Of Defer

Income Taxes (Schedule Of Deferred Tax Assets And Liabilities) (Details) - USD ($)	Dec. 31, 2017	Dec. 31, 2016
Income Taxes [Abstract]
Allowance for loan losses	$ 5,733,000	$ 8,837,000
Other real estate owned	61,000	93,000
Other assets and accruals	1,061,000	1,522,000
Unrealized loss on available for sale securities	1,094,000	2,399,000
Unrealized loss on securities transferred to held to maturity	548,000	1,029,000
Unrealized loss on cash flow hedges	225,000	696,000
Intangible assets	515,000	848,000
Fair value adjustments on loans and other assets	3,313,000	5,816,000
Stock compensation and other	910,000	1,281,000
Total deferred tax assets	13,460,000	22,521,000
Premises and equipment	5,211,000	8,321,000
Unrealized gain on acquired securities	1,141,000	1,726,000
Core deposit intangibles	2,774,000	4,394,000
Deferred loan costs	1,301,000	1,724,000
FHLB stock, prepaid assets, equity investments and other liabilities	1,231,000	1,510,000
Total deferred tax liabilities	11,658,000	17,675,000
Deferred tax asset, net	$ 1,802,000	$ 4,846,000

Subordinated Debentures And T93

Subordinated Debentures And Trust Preferred Securities (Narrative) (Details)	1 Months Ended		12 Months Ended
	Apr. 30, 2004USD ($)	Jun. 30, 2003USD ($)	Dec. 31, 2017USD ($)item	Dec. 31, 2016USD ($)
Subordinated Borrowing [Line Items]
Balance of subordinated debentures outstanding			$ 65,065,000	$ 64,981,000
Subordinated debentures outstanding weighted average cost, percent			5.14%	4.95%
Debt, before issuance costs			$ 65,774,000
Debt issuance costs			$ 709,000
Subordinated debenture maturity in years			30 years
Trust preferred securities			$ 25,000,000
Number of subordinated debentures issued | item			3
Subordinated debt, unpaid interest			$ 1,305,000	$ 1,286,000
Percent of Tier 1 capital, maximum			25.00%
Securities issued by the trusts qualify as Tier 2 capital threshold, percent			25.00%
Trusts' securities qualified as Tier 1 capital			$ 25,000,000	25,000,000
Securities qualified as Tier 2 capital			$ 40,000,000
Deferred interest on debentures time period			60 months
Total assets			$ 3,698,890,000	$ 3,366,427,000
Subordinated Notes [Member]
Subordinated Borrowing [Line Items]
Subordinated notes			$ 40,000,000
Current Rate			5.75%
Initial fixed interest rate			5.75%
Variable rate			4.73%
Debt, before issuance costs			$ 40,000,000
Debt issuance costs			$ 709,000
Date Issued			Jul. 18, 2016
CenBank Trust III [Member]
Subordinated Borrowing [Line Items]
Balance of subordinated debentures outstanding	$ 15,464,000
Current Rate			4.01%
Debt, before issuance costs			$ 15,464,000
Trust preferred securities	$ 15,000,000
Trust preferred securities, rate	2.65%
Date Issued			Apr. 8, 2004
Guaranty Capital Trust III [Member]
Subordinated Borrowing [Line Items]
Balance of subordinated debentures outstanding		$ 10,310,000
Current Rate			4.46%
Debt, before issuance costs			$ 10,310,000
Trust preferred securities		$ 10,000,000
Trust preferred securities, rate		3.10%
Date Issued			Jun. 30, 2003
Minimum [Member]
Subordinated Borrowing [Line Items]
Debentures callable to subsequent time period in years			5 years
Maximum [Member]
Subordinated Borrowing [Line Items]
Debentures callable to subsequent time period in years			10 years
Limit on total assets to qualify as Tier 1 capital			$ 15,000,000,000
Total assets			$ 15,000,000,000
Maximum [Member] | CenBank Trust III [Member]
Subordinated Borrowing [Line Items]
Trust preferred securities interest payment, optional deferral period	60 months

Subordinated Debentures And T94

Subordinated Debentures And Trust Preferred Securities (Schedule Of Subordinated Debenture Issuance) (Details) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2017	Jan. 15, 2018	Jan. 07, 2018
Subordinated Borrowing [Line Items]
Amount		$ 65,774
CenBank Trust III [Member]
Subordinated Borrowing [Line Items]
Date Issued		Apr. 8, 2004
Amount		$ 15,464
Maturity Date		Apr. 15, 2034
Call Date	[1]	Apr. 15, 2018
Rate Adjuster		2.65%
Current Rate		4.01%
Next Rate Reset Date	[2]	Apr. 15, 2018
CenBank Trust III [Member] | Subsequent Event [Member]
Subordinated Borrowing [Line Items]
Current Rate			4.37%
Guaranty Capital Trust III [Member]
Subordinated Borrowing [Line Items]
Date Issued		Jun. 30, 2003
Amount		$ 10,310
Maturity Date		Jul. 7, 2033
Call Date	[1]	Apr. 7, 2018
Rate Adjuster		3.10%
Current Rate		4.46%
Next Rate Reset Date	[2]	Apr. 7, 2018
Guaranty Capital Trust III [Member] | Subsequent Event [Member]
Subordinated Borrowing [Line Items]
Current Rate				4.82%
Subordinated Notes [Member]
Subordinated Borrowing [Line Items]
Date Issued		Jul. 18, 2016
Amount		$ 40,000
Maturity Date		Jul. 20, 2026
Rate Adjuster		4.73%
Current Rate		5.75%
Next Rate Reset Date	[2]	Jul. 20, 2021
[1]	Call date represents the earliest or next date the Company can call the debentures.
[2]	On January 7, 2018, the rate on the Guaranty Capital Trust III subordinated debentures reset to 4.82%. On January 15, 2018, the rate on the CenBank Trust III subordinated debentures reset to 4.37%. The subordinated notes issued July 18, 2016 are fixed at 5.75% until July 20, 2021 at which point the notes turn to floating rate at three-month LIBOR plus 4.73%.

Commitments (Details)

Commitments (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Concentration Risk [Line Items]
Commitments to extend credit, Variable	$ 508,186	$ 436,546
Commitments to extend credit, Fixed	116,026	95,607
Total commitments to extend credit	624,212	532,153
Standby letters of credit	$ 12,398	$ 10,292
Letters of credit issued expiration time period, maximum	1 year
Minimum [Member]
Concentration Risk [Line Items]
Fixed rate commitments to extend credit	2.44%
Maximum [Member]
Concentration Risk [Line Items]
Fixed rate commitments to extend credit	7.00%

Legal Contingencies (Details)

Legal Contingencies (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2017USD ($)
Legal Contingencies [Abstract]
Charge for litigation settlement	$ 1,600

Employee Benefit Plans (Narrati

Employee Benefit Plans (Narrative) (Details) - USD ($)	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Employee Benefit Plans [Line Items]
Employee 401k maximum contribution of compensation	100.00%
Employer 401k matching contributions	$ 764,000	$ 615,000	$ 503,000
Unvested awards	434,149	513,187
Shares expected to vest	421,000
Total income tax effect recognized for share-based compensation arrangements	$ 1,149,000	$ 1,186,000	1,041,000
Recognized stock-based compensation expense	3,023,000	3,121,000	2,739,000
Fair value of vested awards	4,711,000	4,334,000	2,250,000
Unrecognized expense on nonvested awards not yet recognized	$ 3,470,000
Weighted-average period of nonvested awards expected to be recognized over	1 year 1 month 6 days
Performance Shares [Member]
Employee Benefit Plans [Line Items]
Unvested awards	290,066
Shares expected to vest	283,000
Restricted Stock [Member]
Employee Benefit Plans [Line Items]
Grant date fair value of awards granted	$ 2,894,000	$ 2,998,000	$ 2,427,000
2005 Incentive Plan [Member]
Employee Benefit Plans [Line Items]
Number of grants authorized	1,700,000
Outstanding awards	199,945	334,674
2015 Incentive Plan [Member]
Employee Benefit Plans [Line Items]
Number of grants authorized	935,000
Outstanding awards	234,204	178,513
Shares available for grant under Incentive Plan	619,819	728,305

Employee Benefit Plans - (Summa

Employee Benefit Plans - (Summary Of Unearned Stock Awards) (Details)	12 Months Ended
	Dec. 31, 2017$ / sharesshares
Employee Benefit Plans [Abstract]
Beginning Balance, Unearned, Shares | shares	513,187
Awarded, Shares | shares	116,030
Forfeited, Shares | shares	(9,073)
Vested, Shares | shares	(185,995)
Ending Balance, Unearned, Shares | shares	434,149
Beginning Balance, Unearned, Weighted Average Fair Value on Award Date | $ / shares	$ 14.39
Awarded, Weighted Average Fair Value on Award Date | $ / shares	24.95
Forfeited, Weighted Average Fair Value on Award Date | $ / shares	19.51
Vested, Weighted Average Fair Value on Award Date | $ / shares	14.52
Ending Balance, Unearned, Weighted Average Fair Value on Award Date | $ / shares	$ 17.05

Related-Party Transactions (Det

Related-Party Transactions (Details)	Dec. 02, 2016shares	Dec. 31, 2017USD ($)loan	Dec. 31, 2016USD ($)loan
Related Party Transaction [Line Items]
Deposits from related parties | $		$ 3,135,000	$ 3,330,000
Number of loans to related party | loan		2	0
Loans to related parties | $		$ 568,000
Castle Creek Partners Stock Conversion [Member]
Related Party Transaction [Line Items]
Non-voting stock converted | shares	1,019,000
Percent of convertible outstanding stock converted	100.00%
Voting common stock issued in conversion | shares	1,019,000

Fair Value Measurements And 100

Fair Value Measurements And Fair Value Of Financial Instruments (Narrative) (Details) - Significant Unobservable Inputs (Level 3) [Member] - State And Municipal [Member] $ in Thousands	12 Months Ended
	Dec. 31, 2017USD ($)
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Loss on sale of bonds	$ 241
Accretion of bonds	$ 8

Fair Value Measurements And 101

Fair Value Measurements And Fair Value Of Financial Instruments (Financial Assets and Liabilities Measured on a Recurring Basis) (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
State And Municipal [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Assets, Fair Value Disclosure, Recurring	$ 82,486	$ 81,608
State And Municipal [Member] | Significant Other Observable Inputs (Level 2) [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Assets, Fair Value Disclosure, Recurring	75,162	49,856
State And Municipal [Member] | Significant Unobservable Inputs (Level 3) [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Assets, Fair Value Disclosure, Recurring	7,324	31,752
Mortgage-Backed Securities - Agency/Residential [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Assets, Fair Value Disclosure, Recurring	131,180	129,832
Mortgage-Backed Securities - Agency/Residential [Member] | Significant Other Observable Inputs (Level 2) [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Assets, Fair Value Disclosure, Recurring	131,180	129,832
Mortgage-Backed Securities - Private/Residential [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Assets, Fair Value Disclosure, Recurring		265
Mortgage-Backed Securities - Private/Residential [Member] | Significant Other Observable Inputs (Level 2) [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Assets, Fair Value Disclosure, Recurring		265
Corporate Securities [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Assets, Fair Value Disclosure, Recurring	103,512	86,246
Corporate Securities [Member] | Significant Other Observable Inputs (Level 2) [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Assets, Fair Value Disclosure, Recurring	103,512	86,246
Collateralized Loan Obligations [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Assets, Fair Value Disclosure, Recurring	12,799	26,277
Collateralized Loan Obligations [Member] | Significant Other Observable Inputs (Level 2) [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Assets, Fair Value Disclosure, Recurring	12,799	26,277
Interest Rate Swap [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Liabilities, Fair Value Disclosure, Recurring	(1,010)	(1,929)
Interest Rate Swap [Member] | Significant Other Observable Inputs (Level 2) [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Liabilities, Fair Value Disclosure, Recurring	$ (1,010)	$ (1,929)

Fair Value Measurements And 102

Fair Value Measurements And Fair Value Of Financial Instruments (Fair Value Measurements Using Significant Unobservable Inputs Level 3) (Details) - Significant Unobservable Inputs (Level 3) [Member] - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Beginning Balance	$ 31,752
Ending Balance	7,324	$ 31,752
State And Municipal [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Beginning Balance	31,752	32,040
Total unrealized gains (losses), Net income (loss)	(233)	6
Sale, calls and prepayments	(24,195)	(425)
Acquisition of Level 3 security		131
Ending Balance	$ 7,324	$ 31,752

Fair Value Measurements And 103

Fair Value Measurements And Fair Value Of Financial Instruments (Quantitative Information About Level 3 Fair Value Measurements) (Details) - Significant Unobservable Inputs (Level 3) [Member] - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Total	$ 7,324	$ 31,752
State And Municipal [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Total	7,324	31,752	$ 32,040
Discounted Cash Flow [Member] | State And Municipal [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Total	$ 7,324	$ 31,752
Maximum [Member] | Discounted Cash Flow [Member] | State And Municipal [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Discount rate	3.00%	4.75%
Minimum [Member] | Discounted Cash Flow [Member] | State And Municipal [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Discount rate	2.50%	2.29%

Fair Value Measurements And 104

Fair Value Measurements And Fair Value Of Financial Instruments (Estimated Fair Values And Related Carrying Amounts Of Financial Instruments) (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Time deposits with banks	$ 254	$ 254
Securities available for sale	329,977	324,228
Securities held to maturity	257,665	239,404
Bank stocks	24,419	22,649
Carrying Amount [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	51,553	50,111
Time deposits with banks	254	254
Securities available for sale	329,977	324,228
Securities held to maturity	259,916	243,979
Bank stocks	24,419	22,649
Loans held for sale	1,725	4,129
Loans held for investment, net	2,782,413	2,491,759
Accrued interest receivable	11,441	9,825
Deposits	2,941,627	2,699,084
Securities sold under agreements to repurchase	44,746	36,948
Short-term borrowings	157,444	124,691
Subordinated debentures	65,065	64,981
Long-term borrowings	70,000	72,477
Accrued interest payable	1,930	1,661
Interest rate swap - cash flow hedge	1,010	1,929
Fair Value [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	51,553	50,111
Time deposits with banks	254	254
Securities available for sale	329,977	324,228
Securities held to maturity	257,665	239,404
Loans held for sale	1,898	4,542
Loans held for investment, net	2,771,262	2,504,144
Accrued interest receivable	11,441	9,825
Deposits	2,937,584	2,696,766
Securities sold under agreements to repurchase	44,746	36,948
Short-term borrowings	157,444	124,691
Subordinated debentures	61,129	60,048
Long-term borrowings	70,141	72,769
Accrued interest payable	1,930	1,661
Interest rate swap - cash flow hedge	1,010	1,929
Fair Value [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	51,553	50,111
Time deposits with banks	254	254
Loans held for sale	1,898	4,542
Fair Value [Member] | Significant Other Observable Inputs (Level 2) [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Securities available for sale	322,653	292,476
Securities held to maturity	255,189	236,857
Accrued interest receivable	11,441	9,825
Deposits	2,937,584	2,696,766
Securities sold under agreements to repurchase	44,746	36,948
Short-term borrowings	157,444	124,691
Long-term borrowings	70,141	72,769
Accrued interest payable	1,930	1,661
Interest rate swap - cash flow hedge	1,010	1,929
Fair Value [Member] | Significant Unobservable Inputs (Level 3) [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Securities available for sale	7,324	31,752
Securities held to maturity	2,476	2,547
Loans held for investment, net	2,771,262	2,504,144
Subordinated debentures	$ 61,129	$ 60,048

Derivatives And Hedging Acti105

Derivatives And Hedging Activities (Narrative) (Details) - USD ($)	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Derivative Instruments, Gain (Loss) [Line Items]
Amount reclassified from AOCI into interest expense	$ 446,000
The amount of collateral posted in relation to the company's obligation to the swap counterparty	3,751,000
Interest Rate Swap [Member] | Cash Flow Hedging [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Notional amount designated as cash flow hedge	50,000,000	$ 50,000,000
Swap One [Member] | Cash Flow Hedging [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Notional amount designated as cash flow hedge	$ 25,000,000	$ 25,000,000
Fixed interest rate	2.46%	2.46%
Maturity date	Jun. 1, 2020	Jun. 1, 2020
Interest Rate Swap Two [Member] | Cash Flow Hedging [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Notional amount designated as cash flow hedge	$ 25,000,000	$ 25,000,000
Fixed interest rate	3.00%	3.00%
Maturity date	Mar. 1, 2021	Mar. 1, 2021

Derivatives And Hedging Acti106

Derivatives And Hedging Activities (Schedule Of Derivative Financial Instruments As Well As Their Classification On The Balance Sheet) (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Interest Rate Swap [Member] | Other Liabilities [Member] | Designated as Hedging Instrument [Member]
Derivatives, Fair Value [Line Items]
Derivative Liabilities	$ 1,010	$ 1,929

Derivatives And Hedging Acti107

Derivatives And Hedging Activities (Summary Of Interest Rate Swaps Designated As Cash Flow Hedges) (Details) - Interest Rate Swap [Member] - USD ($)	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Derivative [Line Items]
Notional amounts	$ 50,000,000	$ 50,000,000
Weighted average pay rates	2.73%	2.73%
Weighted average receive rates	3 month LIBOR
Weighted average maturity	2 years 10 months 24 days	3 years 10 months 24 days
Unrealized gains (losses)	$ (1,010,000)	$ (1,929,000)

Derivatives And Hedging Acti108

Derivatives And Hedging Activities (Schedule Of Derivative Financial Instruments On Both Comprehensive Income And Net Income) (Details) - Interest Rate Swap [Member] - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Derivative Instruments, Gain (Loss) [Line Items]
Gain or (Loss) Recognized in OCI on Derivative - net of tax	$ 84	$ (183)
Interest Expense [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain or (Loss) Reclassified from Accumulated OCI into Income (Effective Portion) - net of tax	$ 485	$ 573

Accumulated Other Comprehens109

Accumulated Other Comprehensive Income (Schedule Of Changes Within AOCI) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance	$ 352,378	$ 221,639	$ 206,939
Other comprehensive income (loss)	2,032	(1,921)	(1,678)
Balance	404,899	352,378	221,639
Unrealized Gains and Losses On Available For Sale Securities [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance	(3,913)	(1,803)	(965)
Other comprehensive income (loss) before reclassifications, net of tax	1,158	(2,668)	(1,221)
Net unrealized losses on securities transferred from available for sale to held to maturity, net of tax		513	465
Amounts reclassified from accumulated other comprehensive income (loss), net of tax	4	45	(82)
Other comprehensive income (loss)	1,162	(2,110)	(838)
Balance	(2,751)	(3,913)	(1,803)
Unrealized Gains and Losses On Held To Maturity Securities [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance	(1,678)	(1,477)	(1,277)
Net unrealized losses on securities transferred from available for sale to held to maturity, net of tax		(513)	(465)
Amounts reclassified from accumulated other comprehensive income (loss), net of tax	301	312	265
Other comprehensive income (loss)	301	(201)	(200)
Balance	(1,377)	(1,678)	(1,477)
Unrealized Gains And Losses On Cash Flow Hedges [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance	(1,135)	(1,525)	(885)
Other comprehensive income (loss) before reclassifications, net of tax	84	(183)	(775)
Amounts reclassified from accumulated other comprehensive income (loss), net of tax	485	573	135
Other comprehensive income (loss)	569	390	(640)
Balance	(566)	(1,135)	(1,525)
AOCI Including Portion Attributable to Noncontrolling Interest [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance	(6,726)	(4,805)	(3,127)
Other comprehensive income (loss) before reclassifications, net of tax	1,242	(2,851)	(1,996)
Amounts reclassified from accumulated other comprehensive income (loss), net of tax	790	930	318
Other comprehensive income (loss)	2,032	(1,921)	(1,678)
Balance	$ (4,694)	$ (6,726)	$ (4,805)

Accumulated Other Comprehens110

Accumulated Other Comprehensive Income (Schedule Of Amounts Reclassified Out Of AOCI) (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
(Gain) loss on sale of securities									$ 6	$ 73	$ (132)
Interest income	$ 35,340	$ 34,688	$ 32,933	$ 31,341	$ 30,800	$ 25,342	$ 21,851	$ 21,860	134,302	99,853	82,330
Interest expense	3,546	3,354	3,434	3,169	2,978	2,592	2,030	1,865	13,503	9,465	5,351
Income tax benefit (expense)	5,519	5,106	5,007	4,200	3,306	3,039	3,133	2,510	19,832	11,988	11,270
Net income (loss)	$ 8,605	$ 10,054	$ 10,125	$ 9,840	$ 7,421	$ 5,765	$ 5,686	$ 5,855	38,624	24,727	22,454
Reclassification out of Accumulated Other Comprehensive Income [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net income (loss)									790	930	318
Unrealized Gains and Losses On Available For Sale Securities [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
(Gain) loss on sale of securities									6	73	(132)
Income tax benefit (expense)									(2)	(28)	50
Net income (loss)									4	45	(82)
Unrealized Gains and Losses On Held To Maturity Securities [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Interest income									486	504	427
Income tax benefit (expense)									(185)	(192)	(162)
Net income (loss)									301	312	265
Unrealized Gains And Losses On Cash Flow Hedges [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Interest expense									783	925	218
Income tax benefit (expense)									(298)	(352)	(83)
Net income (loss)									$ 485	$ 573	$ 135

Regulatory Capital Matters (Det

Regulatory Capital Matters (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Common Equity Tier 1 Risk-Based Capital, Amount	$ 335,153	$ 296,146
Common Equity Tier 1 Risk-Based Capital, Ratio	10.57%	10.46%
Common Equity Tier 1 Risk-Based Capital, Minimum Capital Requirement, Amount	$ 221,969	$ 198,249
Common Equity Tier 1 Risk-Based Capital, Minimum Capital Requirement, Ratio	7.00%	7.00%
Tier 1 capital to risk weighted assets, Amount	$ 360,153	$ 321,146
Tier 1 capital to risk weighted assets, Ratio	11.36%	11.34%
Tier 1 capital to risk weighted assets, Minimum Capital Adequacy Requirement, Amount	$ 269,534	$ 240,731
Tier 1 capital to risk weighted assets, Minimum Capital Adequacy Requirement, Ratio	8.50%	8.50%
Total capital to risk weighted assets, Amount	$ 423,583	$ 384,552
Total capital to risk weighted assets, Ratio	13.36%	13.58%
Total capital to risk weighted assets, Minimum Capital Adequacy Requirement, Amount	$ 332,954	$ 297,373
Total capital to risk weighted assets, Minimum Capital Adequacy Requirement, Ratio	10.50%	10.50%
Leverage Ratio, Amount	$ 360,153	$ 321,146
Leverage Ratio, Ratio	10.21%	9.81%
Leverage Ratio, Minimum Capital Adequacy Requirement, Amount	$ 141,164	$ 130,927
Leverage Ratio, Minimum Capital Requirement, Ratio	4.00%	4.00%
Guaranty Bank And Trust Company [Member]
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Common Equity Tier 1 Risk-Based Capital, Amount	$ 389,698	$ 351,806
Common Equity Tier 1 Risk-Based Capital, Ratio	12.29%	12.43%
Common Equity Tier 1 Risk-Based Capital, Minimum Capital Requirement, Amount	$ 221,923	$ 198,111
Common Equity Tier 1 Risk-Based Capital, Minimum Capital Requirement, Ratio	7.00%	7.00%
Common Equity Tier 1 Risk-Based Capital, Minimum Requirement to be Well Capitalized, Amount	$ 206,071	$ 183,960
Common Equity Tier 1 Risk-Based Capital, Minimum Requirement to be Well Capitalized, Ratio	6.50%	6.50%
Tier 1 capital to risk weighted assets, Amount	$ 389,698	$ 351,806
Tier 1 capital to risk weighted assets, Ratio	12.29%	12.43%
Tier 1 capital to risk weighted assets, Minimum Capital Adequacy Requirement, Amount	$ 269,477	$ 240,564
Tier 1 capital to risk weighted assets, Minimum Capital Adequacy Requirement, Ratio	8.50%	8.50%
Tier 1 capital to risk weighted assets, Minimum Requirement to be Well Capitalized Under Prompt Corrective Action Provisions, Amount	$ 253,626	$ 226,413
Tier 1 capital to risk weighted assets, Minimum Requirement to be Well Capitalized Under Prompt Corrective Action Provisions, Ratio	8.00%	8.00%
Total capital to risk weighted assets, Amount	$ 413,128	$ 375,213
Total capital to risk weighted assets, Ratio	13.03%	13.26%
Total capital to risk weighted assets, Minimum Capital Adequacy Requirement, Amount	$ 332,884	$ 297,167
Total capital to risk weighted assets, Minimum Capital Adequacy Requirement, Ratio	10.50%	10.50%
Total capital to risk weighted assets, Minimum Requirement to be Well Capitalized Under Prompt Corrective Action Provisions, Amount	$ 317,032	$ 283,016
Total capital to risk weighted assets, Minimum Requirement to be Well Capitalized Under Prompt Corrective Action Provisions, Ratio	10.00%	10.00%
Leverage Ratio, Amount	$ 389,698	$ 351,806
Leverage Ratio, Ratio	11.05%	10.76%
Leverage Ratio, Minimum Capital Adequacy Requirement, Amount	$ 141,075	$ 130,841
Leverage Ratio, Minimum Capital Requirement, Ratio	4.00%	4.00%
Leverage Ratio, Minimum Requirement to be Well Capitalized Under Prompt Corrective Action Provisions, Amount	$ 176,344	$ 163,552
Leverage Ratio, Minimum Requirement to be Well Capitalized Under Prompt Corrective Action Provisions, Ratio	5.00%	5.00%

Parent Company Only Condense112

Parent Company Only Condensed Financial Information (Schedule Of Condensed Balance Sheets) (Details) - USD ($) $ in Thousands		Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Other assets		$ 23,878	$ 24,100
Total assets		3,698,890	3,366,427
Subordinated debentures, net		65,065	64,981
Total liabilities		3,293,991	3,014,049
Common stock	[1]	32	31
Common stock—additional paid-in capital		859,509	832,067
Accumulated deficit		(343,383)	(367,944)
Accumulated other comprehensive loss		(4,694)	(6,726)
Treasury stock		(106,565)	(105,050)
Total stockholders' equity		404,899	352,378	$ 221,639	$ 206,939
Total liabilities and stockholders' equity		3,698,890	3,366,427
Parent Company [Member]
Cash		11,762	9,469
Investment in subsidiaries		459,443	408,039
Other assets		1,443	2,742
Total assets		472,648	420,250
Subordinated debentures, net		65,065	64,981
Other liabilities		2,684	2,891
Total liabilities		67,749	67,872
Common stock		32	31
Common stock—additional paid-in capital		859,509	832,067
Accumulated deficit		(343,383)	(367,944)
Accumulated other comprehensive loss		(4,694)	(6,726)
Treasury stock		(106,565)	(105,050)
Total stockholders' equity		404,899	352,378
Total liabilities and stockholders' equity		$ 472,648	$ 420,250
[1]	Common stock-$0.001 par value; 40,000,000 shares authorized; 31,643,472 shares issued and 29,222,264 shares outstanding at December 31, 2017 (including 434,149 shares of unvested restricted stock); 40,000,000 shares authorized; 30,695,886 shares issued and 28,334,004 shares outstanding at December 31, 2016 (including 513,187 shares of unvested restricted stock).

Parent Company Only Condense113

Parent Company Only Condensed Financial Information (Schedule Of Condensed Statements Of Operations) (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Interest expense	$ 3,546	$ 3,354	$ 3,434	$ 3,169	$ 2,978	$ 2,592	$ 2,030	$ 1,865	$ 13,503	$ 9,465	$ 5,351
Salaries and benefits									46,762	40,946	33,564
Income tax benefit	(5,519)	(5,106)	(5,007)	(4,200)	(3,306)	(3,039)	(3,133)	(2,510)	(19,832)	(11,988)	(11,270)
Net income	$ 8,605	$ 10,054	$ 10,125	$ 9,840	$ 7,421	$ 5,765	$ 5,686	$ 5,855	38,624	24,727	22,454
Other comprehensive income (loss)									2,032	(1,921)	(1,678)
Total comprehensive income									40,656	22,806	20,776
Parent Company [Member]
Management fee- subsidiary bank									6,139	8,127	5,129
Dividends from subsidiary bank									18,700	9,800	8,400
Other									1		28
Total income									24,840	17,927	13,557
Interest expense									3,440	2,005	814
Salaries and benefits									3,736	3,838	3,325
Professional services									2,083	1,774	1,779
Other									1,633	3,759	953
Total expenses									10,892	11,376	6,871
Income (loss) before federal income taxes and equity in undistributed net income of subsidiaries									13,948	6,551	6,686
Income tax benefit									1,576	1,024	495
Income (loss) before equity in undistributed net income of subsidiaries									15,524	7,575	7,181
Equity in undistributed income of subsidiaries									23,100	17,152	15,273
Net income									38,624	24,727	22,454
Other comprehensive income (loss)									2,032	(1,921)	(1,678)
Total comprehensive income									$ 40,656	$ 22,806	$ 20,776

Parent Company Only Condense114

Parent Company Only Condensed Financial Information (Schedule Of Condensed Statement Of Cash Flows) (Details) - USD ($)	3 Months Ended								12 Months Ended
	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Net income	$ 8,605,000	$ 10,054,000	$ 10,125,000	$ 9,840,000	$ 7,421,000	$ 5,765,000	$ 5,686,000	$ 5,855,000	$ 38,624,000	$ 24,727,000	$ 22,454,000
Depreciation									2,971,000	2,713,000	2,747,000
Equity based compensation									3,023,000	3,121,000	2,739,000
Other assets									1,035,000	(282,000)	(969,000)
Net cash from operating activities									51,844,000	28,750,000	33,433,000
Cash paid in acquisition, net of cash acquired									21,717,000	(23,915,000)	(1,457,000)
Net cash from investing activities									(187,126,000)	(61,667,000)	(260,155,000)
Repurchase of common stock									(1,515,000)	(1,307,000)	(616,000)
Proceeds from issuance of subordinated debt, net of issuance costs										39,170,000
Dividends paid									(14,063,000)	(10,524,000)	(8,429,000)
Payment of stock issuance costs related to acquisition										(834,000)
Net cash used by financing activities									136,724,000	56,317,000	220,992,000
Net change in cash and cash equivalents									1,442,000	23,400,000	(5,730,000)
Cash and cash equivalents, beginning of period				50,111,000				26,711,000	50,111,000	26,711,000	32,441,000
Cash and cash equivalents, end of period	51,553,000				50,111,000				51,553,000	50,111,000	26,711,000
Parent Company [Member]
Net income									38,624,000	24,727,000	22,454,000
Equity based compensation									1,123,000	1,168,000	990,000
Other assets									1,298,000	1,474,000	(168,000)
Other liabilities									(122,000)	1,454,000	111,000
Equity in undistributed income of consolidated subsidiaries									(23,100,000)	(17,152,000)	(15,273,000)
Net cash from operating activities									17,823,000	11,671,000	8,114,000
Cash paid in acquisition, net of cash acquired									48,000	(32,446,000)
Net cash from investing activities									48,000	(32,446,000)
Repurchase of common stock									(1,515,000)	(1,307,000)	(616,000)
Proceeds from issuance of subordinated debt, net of issuance costs										39,170,000
Dividends paid									(14,063,000)	(10,524,000)	(8,429,000)
Payment of stock issuance costs related to acquisition										(834,000)
Net cash used by financing activities									(15,578,000)	26,505,000	(9,045,000)
Net change in cash and cash equivalents									2,293,000	5,730,000	(931,000)
Cash and cash equivalents, beginning of period				$ 9,469,000				$ 3,739,000	9,469,000	3,739,000	4,670,000
Cash and cash equivalents, end of period	$ 11,762,000				$ 9,469,000				$ 11,762,000	$ 9,469,000	$ 3,739,000

Quarterly Results Of Operati115

Quarterly Results Of Operations (Schedule Of Quarterly Results Of Operations) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Quarterly Results Of Operations [Abstract]
Interest income	$ 35,340	$ 34,688	$ 32,933	$ 31,341	$ 30,800	$ 25,342	$ 21,851	$ 21,860	$ 134,302	$ 99,853	$ 82,330
Interest expense	3,546	3,354	3,434	3,169	2,978	2,592	2,030	1,865	13,503	9,465	5,351
Net interest income	31,794	31,334	29,499	28,172	27,822	22,750	19,821	19,995	120,799	90,388	76,979
Provision for loan losses	284	497	206	5	90	27	10	16	992	143	96
Net interest income, after provision for loan losses	31,510	30,837	29,293	28,167	27,732	22,723	19,811	19,979	119,807	90,245	76,883
Noninterest income	6,570	6,130	6,342	6,402	6,232	4,705	4,142	4,178	25,444	19,257	17,180
Noninterest expense	23,956	21,807	20,503	20,529	23,237	18,624	15,134	15,792	86,795	72,787	60,339
Income before income taxes	14,124	15,160	15,132	14,040	10,727	8,804	8,819	8,365	58,456	36,715	33,724
Income tax benefit (expense)	5,519	5,106	5,007	4,200	3,306	3,039	3,133	2,510	19,832	11,988	11,270
Net income	$ 8,605	$ 10,054	$ 10,125	$ 9,840	$ 7,421	$ 5,765	$ 5,686	$ 5,855	$ 38,624	$ 24,727	$ 22,454
Basic earnings per common share	$ 0.30	$ 0.36	$ 0.36	$ 0.35	$ 0.27	$ 0.25	$ 0.27	$ 0.28	$ 1.38	$ 1.06	$ 1.07
Diluted earning per common share	$ 0.30	$ 0.36	$ 0.36	$ 0.35	$ 0.26	$ 0.25	$ 0.27	$ 0.27	$ 1.36	$ 1.05	$ 1.06

Subsequent Events (Details)

Subsequent Events (Details) - USD ($) $ / shares in Units, $ in Millions	Feb. 12, 2018	Jan. 16, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Subsequent Event [Line Items]
Dividends declared per common share:			$ 0.50	$ 0.46	$ 0.40
Subsequent Event [Member]
Subsequent Event [Line Items]
Assets under management		$ 1,400
Dividend payable, date declared	Feb. 12, 2018
Dividends declared per common share:	$ 0.1625
Dividends payable, date to be paid	Mar. 2, 2018
Dividends Payable, Date of Record	Feb. 23, 2018
Subsequent Event [Member] | Wagner Wealth Management LLC [Member]
Subsequent Event [Line Items]
Assets under management		575
Cash outlays related to acquisitions		$ 5