First Business Financial Services (FBIZ) 10-Q 27 Oct 17 2017 Q3 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	9 Months Ended
	Sep. 30, 2017	Oct. 20, 2017
Document and Entity Information [Abstract]
Entity Registrant Name	First Business Financial Services, Inc.
Entity Central Index Key	1,521,951
Current Fiscal Year End Date	--12-31
Document Type	10-Q
Document Period End Date	Sep. 30, 2017
Document Fiscal Year Focus	2,017
Document Fiscal Period Focus	Q3
Amendment Flag	false
Entity Filer Category	Accelerated Filer
Entity Common Stock, Shares Outstanding		8,759,673

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Assets
Cash and due from banks	$ 20,685	$ 14,596
Short-term investments	52,511	62,921
Cash and cash equivalents	73,196	77,517
Securities available-for-sale, at fair value	131,130	145,893
Securities held-to-maturity, at amortized cost	38,873	38,612
Loans held for sale	0	1,111
Loans and leases receivable, net of allowance for loan and lease losses of $19,923 and $20,912, respectively	1,446,790	1,429,763
Premises and equipment, net	3,048	3,772
Foreclosed properties	2,585	1,472
Bank-owned life insurance	39,988	39,048
Federal Home Loan Bank and Federal Reserve Bank stock, at cost	5,083	2,131
Goodwill and other intangible assets	12,735	12,773
Accrued interest receivable and other assets	32,228	28,607
Total assets	1,785,656	1,780,699
Liabilities and Stockholders’ Equity
Deposits	1,423,724	1,538,855
Federal Home Loan Bank advances and other borrowings	167,884	59,676
Junior subordinated notes	10,015	10,004
Accrued interest payable and other liabilities	17,252	10,514
Total liabilities	1,618,875	1,619,049
Stockholders’ equity:
Preferred stock, $0.01 par value, 2,500,000 shares authorized, none issued or outstanding	0	0
Common stock, $0.01 par value, 25,000,000 shares authorized, 9,016,345 and 8,959,239 shares issued, 8,758,923 and 8,715,856 shares outstanding at September 30, 2017 and December 31, 2016, respectively	90	90
Additional paid-in capital	78,353	77,542
Retained earnings	95,785	91,317
Accumulated other comprehensive loss	(370)	(522)
Treasury stock, 257,422 and 243,383 shares at September 30, 2017 and December 31, 2016, respectively, at cost	(7,077)	(6,777)
Total stockholders’ equity	166,781	161,650
Total liabilities and stockholders’ equity	$ 1,785,656	$ 1,780,699

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Consolidated Balance Sheets - Parenthetical [Abstract]
Allowance for loan and lease losses	$ 19,923	$ 20,912
Preferred stock, par value	$ 0.01	$ 0.01
Preferred stock, shares authorized	2,500,000	2,500,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	25,000,000	25,000,000
Common stock, shares issued	9,016,345	8,959,239
Common stock, shares outstanding	8,758,923	8,715,856
Treasury stock, shares	257,422	243,383

Consolidated Statements of Inco

Consolidated Statements of Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Interest income
Loans and leases	$ 17,686	$ 18,016	$ 53,492	$ 55,161
Securities	771	698	2,326	2,102
Short-term investments	177	184	488	533
Total interest income	18,634	18,898	56,306	57,796
Interest expense
Deposits	2,708	2,870	8,039	8,961
Federal Home Loan Bank advances and other borrowings	763	453	2,185	1,425
Junior subordinated notes	280	280	832	835
Total interest expense	3,751	3,603	11,056	11,221
Net interest income	14,883	15,295	45,250	46,575
Provision for loan and lease losses	1,471	3,537	5,699	6,824
Net interest income after provision for loan and lease losses	13,412	11,758	39,551	39,751
Non-interest income
Trust and investment services fee income	1,653	1,364	4,930	3,981
Gain on sale of Small Business Administration loans	606	347	1,501	3,854
Gain on sale of residential mortgage loans	0	198	26	540
Service charges on deposits	756	772	2,287	2,247
Loan fees	391	506	1,525	1,791
Increase in cash surrender value of bank-owned life insurance	314	244	940	730
Other non-interest income	619	209	1,931	914
Total non-interest income	4,339	3,640	13,140	14,057
Non-interest expense
Compensation	7,645	7,637	24,710	24,454
Occupancy	527	530	1,521	1,538
Professional fees	995	1,065	3,046	2,888
Data processing	592	623	1,810	1,971
Marketing	594	528	1,546	1,710
Equipment	285	292	868	913
Computer software	715	539	2,037	1,607
FDIC insurance	320	444	1,081	989
Collateral liquidation costs	371	89	556	204
Net loss on foreclosed properties	0	0	0	93
Impairment of tax credit investments	112	3,314	338	3,520
SBA Business Administration recourse provision	1,315	375	2,095	449
Other non-interest expense	760	317	2,404	1,574
Total non-interest expense	14,231	15,753	42,012	41,910
Income (loss) before income tax expense	3,520	(355)	10,679	11,898
Income tax expense (benefit)	936	(3,020)	2,812	957
Net income	$ 2,584	$ 2,665	$ 7,867	$ 10,941
Earnings per common share
Basic	$ 0.30	$ 0.31	$ 0.90	$ 1.26
Diluted	0.30	0.31	0.90	1.26
Dividends declared per share	$ 0.13	$ 0.12	$ 0.39	$ 0.36

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Statement of Comprehensive Income [Abstract]
Net income	$ 2,584	$ 2,665	$ 7,867	$ 10,941
Other comprehensive income, before tax
Net unrealized securities gains arising during the period	172	81	199	1,317
Amortization of net unrealized losses transferred from available-for-sale	25	41	79	124
Income tax expense	(76)	(47)	(126)	(555)
Total other comprehensive income	121	75	152	886
Comprehensive income	$ 2,705	$ 2,740	$ 8,019	$ 11,827

Consolidated Statements of Chan

Consolidated Statements of Changes in Stockholders' Equity (Unaudited) - USD ($) $ in Thousands	Total	Common stock	Additional paid-in capital	Retained earnings	Accumulated other comprehensive income (loss)	Treasury stock
Common shares outstanding at Dec. 31, 2015		8,699,410
Beginning balance at Dec. 31, 2015	$ 150,832	$ 89	$ 76,549	$ 80,584	$ (80)	$ (6,310)
Net income	10,941			10,941
Other comprehensive income (loss)	886				886
Share-based compensation - restricted shares, shares issued		37,708
Share-based compensation - restricted shares	858	$ 1	857
Cash dividends ($0.36 per share during 2017 and $0.39 per share during 2016)	(3,132)			(3,132)
Treasury stock purchased, shares		(19,819)
Treasury stock purchased	(454)					(454)
Common shares outstanding at Sep. 30, 2016		8,717,299
Ending balance at Sep. 30, 2016	$ 159,931	$ 90	77,406	88,393	806	(6,764)
Common shares outstanding at Dec. 31, 2016	8,715,856	8,715,856
Beginning balance at Dec. 31, 2016	$ 161,650	$ 90	77,542	91,317	(522)	(6,777)
Net income	7,867			7,867
Other comprehensive income (loss)	152				152
Share-based compensation - restricted shares, shares issued		57,106
Share-based compensation - restricted shares	811		811
Cash dividends ($0.36 per share during 2017 and $0.39 per share during 2016)	(3,399)			(3,399)
Treasury stock purchased, shares		(14,039)
Treasury stock purchased	$ (300)					(300)
Common shares outstanding at Sep. 30, 2017	8,758,923	8,758,923
Ending balance at Sep. 30, 2017	$ 166,781	$ 90	$ 78,353	$ 95,785	$ (370)	$ (7,077)

Consolidated Statements of Cha7

Consolidated Statements of Changes in Stockholders' Equity (Parenthetical) - $ / shares	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016
Common stock, cash dividends, per share, declared	$ 0.39	$ 0.36
Retained earnings
Common stock, cash dividends, per share, declared	$ 0.39	$ 0.36

Consolidated Statements of Cash

Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016
Operating activities
Net income	$ 7,867	$ 10,941
Adjustments to reconcile net income to net cash provided by operating activities:
Deferred income taxes, net	(1,603)	(9)
Impairment of tax credit investments	338	3,520
Provision for loan and lease losses	5,699	6,824
Depreciation, amortization and accretion, net	1,148	1,103
Share-based compensation	811	858
Increase in value of bank-owned life insurance policies	(940)	(730)
Origination of loans for sale	(24,606)	(54,794)
Sale of loans originated for sale	27,244	59,263
Gain on sale of loans originated for sale	1,527	4,394
Net loss on foreclosed properties, including impairment valuation	0	(93)
Excess tax benefit from share-based compensation	(59)	(138)
Returns on investments in limited partnerships	92	250
Net increase in accrued interest receivable and other assets	(1,759)	(2,813)
Net (decrease) increase in accrued interest payable and other liabilities	6,739	(2,789)
Net cash provided by operating activities	19,444	17,185
Investing activities
Proceeds from maturities, redemptions and paydowns of available-for-sale securities	29,802	32,555
Proceeds from maturities, redemptions and paydowns of held-to-maturity securities	2,723	2,906
Proceeds from sale of available-for-sale securities	11,702	2,190
Purchases of available-for-sale securities	(27,125)	(48,229)
Purchases of held-to-maturity securities	(3,016)	(714)
Proceeds from sale of foreclosed properties	0	57
Net increase in loans and leases	(22,530)	(29,962)
Investments in limited partnerships	500	750
Returns of investments in limited partnerships	0	541
Investment in historic development entities	(417)	(1,488)
Investment in Federal Home Loan Bank and Federal Reserve Bank Stock	(12,223)	(388)
Proceeds from the sale of Federal Home Loan Bank Stock	9,271	1,066
Purchases of leasehold improvements and equipment, net	(942)	(519)
Net cash used in investing activities	(13,255)	(42,735)
Financing activities
Net decrease in deposits	(115,107)	(10,924)
Repayment of Federal Home Loan Bank advances	470,416	63,100
Proceeds from Federal Home Loan Bank Borrowings	580,415	59,600
Proceeds from Issuance of Subordinated Long-term Debt	9,090	0
Early Repayment of Subordinated Debt	7,889	0
Net (decrease) increase in other borrowed funds	(2,904)	(1,240)
Cash dividends paid	(3,399)	(3,132)
Purchase of treasury stock	(300)	(454)
Net cash used in financing activities	(10,510)	(19,250)
Net decrease in cash and cash equivalents	(4,321)	(44,800)
Cash and cash equivalents at the beginning of the period	77,517	113,564
Cash and cash equivalents at the end of the period	73,196	68,764
Cash paid during the period for:
Interest paid on deposits and borrowings	10,504	11,058
Income taxes paid	490	5,122
Non-cash investing and financing activities:
Transfer of loans from held-to-maturity to held-for-sale	8,366	11,504
Transfer from premises and equipment to foreclosed properties	$ 1,113	$ 0

Nature of Operations and Summar

Nature of Operations and Summary of Significant Accounting Policies	9 Months Ended
	Sep. 30, 2017
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Nature of Operations and Summary of Significant Accounting Policies	Nature of Operations and Summary of Significant Accounting Policies Nature of Operations. The accounting and reporting practices of First Business Financial Services, Inc. (the “Corporation”), through our wholly-owned subsidiary, First Business Bank (“FBB” or the “Bank”), has been prepared in accordance with U.S. generally accepted accounting principles (“GAAP”). FBB operates as a commercial banking institution primarily in the Wisconsin and greater Kansas City markets. FBB also offers trust and investment services through First Business Trust & Investments (“FBTI”), a division of FBB. The Bank provides a full range of financial services to businesses, business owners, executives, professionals and high net worth individuals. The Bank is subject to competition from other financial institutions and service providers and is also subject to state and federal regulations. FBB has the following wholly owned subsidiaries: First Business Capital Corp. (“FBCC”), First Madison Investment Corp. (“FMIC”), First Business Equipment Finance, LLC (“FBEF”), ABKC Real Estate, LLC (“ABKC”), Rimrock Road Investment Fund, LLC (“Rimrock Road”), BOC Investment, LLC (“BOC”), Mitchell Street Apartments Investment, LLC (“Mitchell Street”) and FBB Tax Credit Investment LLC (“FBB Tax Credit”). FMIC is located in and was formed under the laws of the state of Nevada. Basis of Presentation. The accompanying unaudited Consolidated Financial Statements were prepared in accordance with GAAP and the instructions to Form 10-Q and Rule 10-01 of Regulation S-X. Accordingly, they do not include all of the information and footnotes required by GAAP for complete financial statements and should be read in conjunction with the Corporation’s Consolidated Financial Statements and footnotes thereto included in the Corporation’s Annual Report on Form 10-K for the year ended December 31, 2016 . The unaudited Consolidated Financial Statements include the accounts of the Corporation and its wholly owned subsidiaries. All significant intercompany balances and transactions have been eliminated in consolidation. In accordance with the provisions of Accounting Standards Codification (“ASC”) Topic 810, the Corporation’s ownership interest in FBFS Statutory Trust II (“Trust II”) has not been consolidated into the financial statements. Management of the Corporation is required to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements as well as reported amounts of revenues and expenses during the reporting period. Actual results could differ significantly from those estimates. Material estimates that could significantly change in the near-term include the value of securities, level of the allowance for loan and lease losses, lease residuals, property under operating leases, goodwill, level of the Small Business Administration (“SBA”) recourse reserve and income taxes. The results of operations for the nine month period ended September 30, 2017 are not necessarily indicative of results that may be expected for any other interim period or the entire fiscal year ending December 31, 2017 . Certain amounts in prior periods may have been reclassified to conform to the current presentation. Subsequent events have been evaluated through the date of the issuance of the unaudited Consolidated Financial Statements. No significant subsequent events have occurred through this date requiring adjustment to the financial statements or disclosures. The Corporation has not changed its significant accounting and reporting policies from those disclosed in the Corporation’s Form 10-K for the year ended December 31, 2016 . Recent Accounting Pronouncements In May 2014, the Financial Accounting Standards Board (“FASB”) issued ASU No. 2014-09, “Revenue from Contracts with Customers (Topic 606),” with an original effective date for annual reporting periods beginning after December 15, 2016. The ASU is a converged standard between the FASB and the IASB that provides a single comprehensive revenue recognition model for all contracts with customers across transactions and industries. The primary objective of the ASU is revenue recognition that represents the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled to in exchange for those goods or services. In August 2015, the FASB issued ASU No. 2015-14, which defers the effective date of ASU 2014-09 to annual and interim reporting periods in fiscal years beginning after December 15, 2017. Earlier application is permitted only as of annual and interim reporting periods in fiscal years beginning after December 15, 2016. In March 2016, the FASB issued ASU No. 2016-08, “ Revenue from Contracts with Customers (Topic 606): Principal versus Agent Considerations (Reporting Revenue Gross versus Net.” The ASU intends to improve the operability and understandability of the implementation guidance of ASU 2014-09 on principal versus agent considerations. In April, May and December 2016, the FASB also issued ASU No. 2016-10, No. 2016-12 and No. 2016-20, respectively, related to Topic 606. The amendments do not change the core principles of the previously issued guidance, but instead further clarify and provide implementation guidance for certain aspects of the original ASU. The Corporation intends to adopt the accounting standards during the first quarter of 2018, as required. The Corporation has conducted its initial assessment and evaluated contracts to assess and quantify accounting methodology changes resulting from the adoption of this standard. The adoption of this accounting standard is not expected to have a material impact on the Corporation's consolidated financial statements. The FASB continues to release new accounting guidance related to the adoption of this standard, which could impact the Corporation's initial assessment and may change the conclusions reached as to the application of this new guidance. In February 2016, the FASB issued ASU No. 2016-02, “Leases (Topic 842).” The ASU intends to increase transparency and comparability among organizations by recognizing lease assets and lease liabilities and disclosing key information about leasing arrangements. The ASU will require lessees to recognize the following for all leases (with the exception of short-term leases) at the commencement date: (1) a lease liability, which is a lessees’ obligation to make lease payments arising from a lease, measured on a discounted basis; and (2) a right-of-use asset, which is an asset that represents the lessee’s right to use, or control the use of, a specified asset for the lease term. Under the new guidance, lessor accounting is largely unchanged. Certain targeted improvements were made to align, where necessary, lessor accounting with the lessee accounting model and Topic 606, Revenue from Contracts with Customers . The new lease guidance simplifies the accounting for sale and leaseback transactions primarily because lessees must recognize lease assets and lease liabilities. Lessees (for capital and operating leases) and lessors (for sales-type, direct financing, and operating leases) must apply a modified retrospective transition approach for leases existing at, or entered into after, the beginning of the earliest comparative period presented in the financial statements. The modified retrospective approach would not require any transition accounting for leases that expired before the earliest comparative period presented. The ASU is effective for public companies for fiscal years beginning after December 15, 2018, including interim periods within those fiscal years, with early adoption permitted. The Corporation intends to adopt the accounting standard during the first quarter of 2019, as required, and is currently evaluating the impact on its results of operations, financial position and liquidity. In June 2016, the FASB issued ASU No. 2016-13, “Financial Instruments- Credit Losses (Topic 326).” The ASU replaces the incurred loss impairment methodology for recognizing credit losses with a methodology that reflects all expected credit losses. The ASU also requires consideration of a broader range of information to inform credit loss estimates, including such factors as past events, current conditions, and reasonable and supportable forecasts that affect the collectability of the reported amount. The amendments affect loans, debt securities, trade receivables, net investments in leases, off-balance-sheet credit exposures, and any other financial asset not excluded from the scope that have the contractual right to receive cash. Entities will apply the amendments in the ASU through a cumulative-effect adjustment to retained earnings as of the beginning of the first reporting period in which the guidance is effective. The ASU is effective for public companies for fiscal years beginning after December 15, 2019, including interim periods within those fiscal years. Early adoption is permitted as of the fiscal years beginning after December 15, 2018. The Corporation intends to adopt the accounting standard during the first quarter of 2020, as required, and is currently evaluating the impact on its results of operations, financial position and liquidity. In May 2017, the FASB issued ASU No. 2017-09, “Compensation- Stock Compensation (Topic 718).” The ASU provides clarity about which changes to the terms or conditions of a share-based payment award require an entity to apply modification accounting. The ASU is effective for all entities for fiscal years beginning after December 15, 2017, including interim periods within those fiscal years. Early adoption is permitted. The Corporation is in the process of evaluating the impact of this standard but does not expect this standard to have a material impact on its results of operations, financial position and liquidity. In August 2017, the FASB issued ASU No. 2017-12, “Derivatives and Hedging (Topic 815).” The ASU intends to better align an entity’s risk management activities and financial reporting for hedging relationships through changes to both the designation and measurement guidance for qualifying hedging relationships and the presentation of hedge results. It also expands and refines hedge accounting for both nonfinancial and financial risk components and aligns the recognition and presentation of the effects of the hedging instrument and the hedged item. The ASU is effective for public companies for fiscal years beginning after December 15, 2018, including interim periods within those fiscal years. Early adoption is permitted. The Corporation is in the process of evaluating the impact of this standard but does not expect this standard to have a material impact on its results of operations, financial position and liquidity.

Earnings Per Common Share

Earnings Per Common Share	9 Months Ended
	Sep. 30, 2017
Earnings Per Share [Abstract]
Earnings Per Common Share	Earnings per Common Share Earnings per common share are computed using the two-class method. Basic earnings per common share are computed by dividing net income allocated to common shares by the weighted average number of shares outstanding during the applicable period, excluding outstanding participating securities. Participating securities include unvested restricted shares. Unvested restricted shares are considered participating securities because holders of these securities receive non-forfeitable dividends, or dividend equivalents, at the same rate as holders of the Corporation’s common stock. Diluted earnings per share are computed by dividing net income allocated to common shares, adjusted for reallocation of undistributed earnings of unvested restricted shares, by the weighted average number of shares determined for the basic earnings per common share computation plus the dilutive effect of common stock equivalents using the treasury stock method. There were no anti-dilutive employee share-based awards for the three and nine month periods ended September 30, 2017 and 2016 . For the Three Months Ended September 30, For the Nine Months Ended September 30, 2017 2016 2017 2016 (Dollars in Thousands, Except Share Data) Basic earnings per common share Net income $ 2,584 $ 2,665 $ 7,867 $ 10,941 Less: earnings allocated to participating securities 35 38 105 165 Basic earnings allocated to common shareholders $ 2,549 $ 2,627 $ 7,762 $ 10,776 Weighted-average common shares outstanding, excluding participating securities 8,621,311 8,582,836 8,606,080 8,569,613 Basic earnings per common share $ 0.30 $ 0.31 $ 0.90 $ 1.26 Diluted earnings per common share Earnings allocated to common shareholders, diluted $ 2,549 $ 2,627 $ 7,762 $ 10,776 Weighted-average diluted common shares outstanding, excluding participating securities 8,621,311 8,582,836 8,606,080 8,569,613 Diluted earnings per common share $ 0.30 $ 0.31 $ 0.90 $ 1.26

Share-Based Compensation

Share-Based Compensation	9 Months Ended
	Sep. 30, 2017
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Share-Based Compensation	Share-Based Compensation The Corporation adopted the 2012 Equity Incentive Plan (the “Plan”) during the quarter ended June 30, 2012. The Plan is administered by the Compensation Committee of the Board of Directors of the Corporation and provides for the grant of equity ownership opportunities through incentive stock options and nonqualified stock options, restricted stock, restricted stock units, dividend equivalent units and any other type of award permitted by the Plan. As of September 30, 2017 , 217,475 shares were available for future grants under the Plan. Shares covered by awards that expire, terminate or lapse will again be available for the grant of awards under the Plan. The Corporation may issue new shares and shares from its treasury stock for shares delivered under the Plan. Restricted Stock Under the Plan, the Corporation may grant restricted stock to plan participants, subject to forfeiture upon the occurrence of certain events until the dates specified in the participant’s award agreement. While restricted stock is subject to forfeiture, with the exception of restricted stock units, which do not have voting rights and are provided dividend equivalents, restricted stock participants may exercise full voting rights and will receive all dividends and other distributions paid with respect to the restricted shares. The restricted stock granted under the Plan is typically subject to a vesting period. Compensation expense is recognized over the requisite service period of generally four years for the entire award on a straight-line basis. Upon vesting of restricted stock, the benefit of tax deductions in excess of recognized compensation expense is reflected as an income tax benefit in the unaudited Consolidated Statements of Income. Restricted stock activity for the year ended December 31, 2016 and the nine months ended September 30, 2017 was as follows: Number of Restricted Shares/Units Weighted Average Grant-Date Fair Value Nonvested balance as of December 31, 2015 135,471 $ 20.13 Granted 60,415 22.74 Vested (56,090 ) 18.71 Forfeited (23,551 ) 20.90 Nonvested balance as of December 31, 2016 116,245 21.13 Granted 64,725 21.62 Vested (45,695 ) 21.49 Forfeited (7,619 ) 21.57 Nonvested balance as of September 30, 2017 127,656 $ 21.39 As of September 30, 2017 , the Corporation had $2.6 million of deferred unvested compensation expense, which the Corporation expects to recognize over a weighted-average period of approximately 3.03 years. For the three and nine months ended September 30, 2017 and 2016 , share-based compensation expense related to restricted stock included in the unaudited Consolidated Statements of Income was as follows: For the Three Months Ended September 30, For the Nine Months Ended September 30, 2017 2016 2017 2016 (In Thousands) Share-based compensation expense $ 268 $ 292 $ 811 $ 858

Securities

Securities	9 Months Ended
	Sep. 30, 2017
Investments, Debt and Equity Securities [Abstract]
Securities	Securities The amortized cost and fair value of securities available-for-sale and the corresponding amounts of gross unrealized gains and losses recognized in accumulated other comprehensive income were as follows: As of September 30, 2017 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value (In Thousands) Available-for-sale: U.S. Government agency obligations - government-sponsored enterprises $ 3,799 $ 11 $ (3 ) $ 3,807 Municipal obligations 9,342 13 (23 ) 9,332 Collateralized mortgage obligations - government issued 22,750 301 (149 ) 22,902 Collateralized mortgage obligations - government-sponsored enterprises 95,608 165 (684 ) 95,089 $ 131,499 $ 490 $ (859 ) $ 131,130 As of December 31, 2016 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value (In Thousands) Available-for-sale: U.S. Government agency obligations - government-sponsored enterprises $ 6,298 $ 7 $ (10 ) $ 6,295 Municipal obligations 8,246 2 (92 ) 8,156 Asset-backed securities 1,116 — (35 ) 1,081 Collateralized mortgage obligations - government issued 30,936 423 (146 ) 31,213 Collateralized mortgage obligations - government-sponsored enterprises 99,865 252 (969 ) 99,148 $ 146,461 $ 684 $ (1,252 ) $ 145,893 The amortized cost and fair value of securities held-to-maturity and the corresponding amounts of gross unrealized gains and losses were as follows: As of September 30, 2017 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value (In Thousands) Held-to-maturity: U.S. Government agency obligations - government-sponsored enterprises $ 1,498 $ — $ (5 ) $ 1,493 Municipal obligations 21,928 443 (14 ) 22,357 Collateralized mortgage obligations - government issued 9,601 16 (33 ) 9,584 Collateralized mortgage obligations - government-sponsored enterprises 5,846 12 (18 ) 5,840 $ 38,873 $ 471 $ (70 ) $ 39,274 As of December 31, 2016 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value (In Thousands) Held-to-maturity: U.S. Government agency obligations - government-sponsored enterprises $ 1,497 $ 2 $ (5 ) $ 1,494 Municipal obligations 21,173 62 (78 ) 21,157 Collateralized mortgage obligations - government issued 9,148 17 (38 ) 9,127 Collateralized mortgage obligations - government-sponsored enterprises 6,794 6 (58 ) 6,742 $ 38,612 $ 87 $ (179 ) $ 38,520 U.S. Government agency obligations - government-sponsored enterprises represent securities issued by the Federal Home Loan Mortgage Corporation (“FHLMC”) and Federal National Mortgage Association (“FNMA”). Municipal obligations include securities issued by various municipalities located primarily within the State of Wisconsin and are primarily general obligation bonds that are tax-exempt in nature. Asset-backed securities represent securities issued by the Student Loan Marketing Association (“SLMA”) which are 97% guaranteed by the U.S. Government. Collateralized mortgage obligations - government issued represent securities guaranteed by the Government National Mortgage Association. Collateralized mortgage obligations - government-sponsored enterprises include securities guaranteed by the FHLMC and the FNMA. There were 14 sales of available-for-sale securities that occurred during the nine months ended September 30, 2017 and three sales of available-for-sale securities that occurred during the nine months ended September 30, 2016 . At September 30, 2017 and December 31, 2016 , securities with a fair value of $1.9 million and $22.4 million , respectively, were pledged to secure interest rate swap contracts, outstanding Federal Home Loan Bank (“FHLB”) advances and additional FHLB availability. The amortized cost and fair value of securities by contractual maturity at September 30, 2017 are shown below. Actual maturities may differ from contractual maturities because issuers have the right to call or prepay certain obligations with or without call or prepayment penalties. Available-for-Sale Held-to-Maturity Amortized Cost Fair Value Amortized Cost Fair Value (In Thousands) Due in one year or less $ 6,785 $ 6,783 $ — $ — Due in one year through five years 13,156 13,194 11,177 11,326 Due in five through ten years 48,051 48,168 13,258 13,495 Due in over ten years 63,507 62,985 14,438 14,453 $ 131,499 $ 131,130 $ 38,873 $ 39,274 The tables below show the Corporation’s gross unrealized losses and fair value of available-for-sale investments with unrealized losses, aggregated by investment category and length of time that individual investments were in a continuous loss position at September 30, 2017 and December 31, 2016 . At September 30, 2017 , the Corporation held 106 available-for-sale securities that were in an unrealized loss position. Such securities have not experienced credit rating downgrades; however, they have primarily declined in value due to the current interest rate environment. At September 30, 2017 , the Corporation held 56 available-for-sale securities that had been in a continuous unrealized loss position for twelve months or greater. The Corporation has not specifically identified available-for-sale securities in a loss position that it intends to sell in the near term and does not believe that it will be required to sell any such securities. The Corporation reviews its securities on a quarterly basis to monitor its exposure to other-than-temporary impairment. Consideration is given to such factors as the length of time and extent to which the security has been in an unrealized loss position, changes in security ratings and an evaluation of the present value of expected future cash flows, if necessary. Based on the Corporation’s evaluation, it is expected that the Corporation will recover the entire amortized cost basis of each security. Accordingly, no other-than-temporary impairment was recorded in the unaudited Consolidated Statements of Income for the nine months ended September 30, 2017 and 2016 . A summary of unrealized loss information for securities available-for-sale, categorized by security type and length of time for which the security has been in a continuous unrealized loss position, follows: As of September 30, 2017 Less than 12 Months 12 Months or Longer Total Fair Value Unrealized Losses Fair Value Unrealized Losses Fair Value Unrealized Losses (In Thousands) Available-for-sale: U.S. Government agency obligations - government-sponsored enterprises $ 800 $ — $ 1,997 $ 3 $ 2,797 $ 3 Municipal obligations 1,916 9 3,011 14 4,927 23 Collateralized mortgage obligations - government issued 3,679 14 6,185 135 9,864 149 Collateralized mortgage obligations - government-sponsored enterprises 32,752 121 31,883 563 64,635 684 $ 39,147 $ 144 $ 43,076 $ 715 $ 82,223 $ 859 As of December 31, 2016 Less than 12 Months 12 Months or Longer Total Fair Value Unrealized Losses Fair Value Unrealized Losses Fair Value Unrealized Losses (In Thousands) Available-for-sale: U.S. Government agency obligations - government-sponsored enterprises $ 1,991 $ 10 $ — $ — $ 1,991 $ 10 Municipal obligations 7,207 89 406 3 7,613 92 Asset-backed securities — $ — 1,081 35 1,081 35 Collateralized mortgage obligations - government issued 10,552 130 493 16 11,045 146 Collateralized mortgage obligations - government-sponsored enterprises 54,843 931 1,819 38 56,662 969 $ 74,593 $ 1,160 $ 3,799 $ 92 $ 78,392 $ 1,252 The tables below show the Corporation’s gross unrealized losses and fair value of held-to-maturity investments, aggregated by investment category and length of time that individual investments were in a continuous loss position at September 30, 2017 and December 31, 2016 . At September 30, 2017 , the Corporation held 14 held-to-maturity securities that were in an unrealized loss position. Such securities have not experienced credit rating downgrades; however, they have primarily declined in value due to the current interest rate environment. There were seven held-to-maturity securities that had been in a continuous loss position for twelve months or greater as of September 30, 2017 . It is expected that the Corporation will recover the entire amortized cost basis of each held-to-maturity security based upon an evaluation of aforementioned factors. Accordingly, no other-than-temporary impairment was recorded in the unaudited Consolidated Statements of Income for the nine months ended September 30, 2017 and 2016 . A summary of unrealized loss information for securities held-to-maturity, categorized by security type and length of time for which the security has been in a continuous unrealized loss position, follows: As of September 30, 2017 Less than 12 Months 12 Months or Longer Total Fair Value Unrealized Losses Fair Value Unrealized Losses Fair Value Unrealized Losses (In Thousands) Held-to-maturity: U.S. Government agency obligations - government-sponsored enterprises $ 1,000 $ 5 $ — $ — $ 1,000 $ 5 Municipal obligations 853 11 260 3 1,113 14 Collateralized mortgage obligations - government issued 2,806 8 3,804 25 6,610 33 Collateralized mortgage obligations - government-sponsored enterprises — — 1,927 18 1,927 18 $ 4,659 $ 24 $ 5,991 $ 46 $ 10,650 $ 70 As of December 31, 2016 Less than 12 Months 12 Months or Longer Total Fair Value Unrealized Losses Fair Value Unrealized Losses Fair Value Unrealized Losses (In Thousands) Held-to-maturity: U.S. Government agency obligations - government-sponsored enterprises $ 1,000 $ 5 $ — $ — $ 1,000 $ 5 Municipal obligations 9,472 78 — — 9,472 78 Collateralized mortgage obligations - government issued 6,980 38 — — 6,980 38 Collateralized mortgage obligations - government-sponsored enterprises 4,682 58 — — 4,682 58 $ 22,134 $ 179 $ — $ — $ 22,134 $ 179

Loan and Lease Receivables, Imp

Loan and Lease Receivables, Impaired Loans and Leases and Allowance for Loan and Lease Losses	9 Months Ended
	Sep. 30, 2017
Receivables [Abstract]
Loan and Lease Receivables, Impaired Loans and Leases and Allowance for Loan and Lease Losses	Loan and Lease Receivables, Impaired Loans and Leases and Allowance for Loan and Lease Losses Loan and lease receivables consist of the following: September 30, December 31, (In Thousands) Commercial real estate: Commercial real estate — owner occupied $ 182,755 $ 176,459 Commercial real estate — non-owner occupied 461,586 473,158 Land development 41,499 56,638 Construction 115,660 101,206 Multi-family 125,080 92,762 1-4 family 40,173 45,651 Total commercial real estate 966,753 945,874 Commercial and industrial 447,223 450,298 Direct financing leases, net 28,868 30,951 Consumer and other: Home equity and second mortgages 7,776 8,412 Other 17,447 16,329 Total consumer and other 25,223 24,741 Total gross loans and leases receivable 1,468,067 1,451,864 Less: Allowance for loan and lease losses 19,923 20,912 Deferred loan fees 1,354 1,189 Loans and leases receivable, net $ 1,446,790 $ 1,429,763 As of September 30, 2017 and December 31, 2016 , the total amount of the Corporation’s ownership of SBA loans on the unaudited Consolidated Balance Sheets comprised of the following: September 30, December 31, (In Thousands) Retained, unguaranteed portion of sold SBA loans $ 30,632 $ 30,418 Other SBA loans (1) 25,684 31,728 Total SBA loans $ 56,316 $ 62,146 (1) Primarily consisted of SBA Express loans, partially funded 7(a) program loans, and impaired SBA loans that were repurchased from the secondary market, all of which were not saleable as of September 30, 2017 and December 31, 2016, respectively. As of September 30, 2017 and December 31, 2016 , $11.9 million and $5.5 million of loans in this portfolio were considered impaired, respectively. Loans transferred to third parties consist of the guaranteed portion of SBA loans which the Corporation sold in the secondary market, participation interests in other originated loans and residential real estate loans. The total principal amount of the guaranteed portion of SBA loans sold during the three months ended September 30, 2017 and 2016 was $6.3 million and $3.3 million , respectively. The total principal amount of the guaranteed portion of SBA loans sold during the nine months ended September 30, 2017 and 2016 was $15.5 million and $36.4 million , respectively. Each of the transfers of these financial assets met the qualifications for sale accounting, and therefore all of the loans transferred during the three and nine months ended September 30, 2017 and 2016 have been derecognized in the unaudited Consolidated Financial Statements. The guaranteed portion of SBA loans were transferred at their fair value and the related gain was recognized upon the transfer as non-interest income in the unaudited Consolidated Financial Statements. The total outstanding balance of sold SBA loans at September 30, 2017 and December 31, 2016 was $103.3 million and $105.1 million , respectively. The total principal amount of transferred participation interests in other originated commercial loans during the three months ended September 30, 2017 and 2016 was $9.0 million and $7.9 million , respectively. The total principal amount of transferred participation interests in other originated commercial loans during the nine months ended September 30, 2017 and 2016 was $17.0 million and $17.7 million , respectively, all of which were treated as sales and derecognized under the applicable accounting guidance at the time of transfer. No gain or loss was recognized on participation interests in other originated loans as they were transferred at or near the date of loan origination and the payments received for servicing the portion of the loans participated represents adequate compensation. The total outstanding balance of these transferred loans at September 30, 2017 and December 31, 2016 was $91.7 million and $102.7 million , respectively. As of September 30, 2017 and December 31, 2016 , the total amount of the Corporation’s partial ownership of these transferred loans on the unaudited Consolidated Balance Sheets was $146.2 million and $106.1 million , respectively. No loans in this participation portfolio were considered impaired as of September 30, 2017 and December 31, 2016 . The Corporation does not share in the participant’s portion of any potential charge-offs. The total amount of loan participations purchased on the unaudited Consolidated Balance Sheets as of September 30, 2017 and December 31, 2016 was $669,000 and $1.2 million , respectively. The Corporation also previously sold residential real estate loans, servicing released, in the secondary market. No residential real estate loans were sold during the three months ended September 30, 2017 and $8.0 million were sold during the three months ended September 30, 2016 . The total principal amount of residential real estate loans sold during the nine months ended September 30, 2017 and 2016 was $1.6 million and $15.2 million , respectively. Each of the transfers of these financial assets met the qualifications for sale accounting, and therefore all of the loans transferred have been derecognized in the unaudited Consolidated Financial Statements. The loans were transferred at their fair value and the related gain was recognized as non-interest income upon the transfer in the unaudited Consolidated Financial Statements. The following tables illustrate ending balances of the Corporation’s loan and lease portfolio, including impaired loans by class of receivable, and considering certain credit quality indicators as of September 30, 2017 and December 31, 2016 : September 30, 2017 Category I II III IV Total (Dollars in Thousands) Commercial real estate: Commercial real estate — owner occupied $ 147,603 $ 19,324 $ 8,690 $ 7,138 $ 182,755 Commercial real estate — non-owner occupied 438,874 19,769 1,117 1,826 461,586 Land development 37,659 795 275 2,770 41,499 Construction 109,102 773 431 5,354 115,660 Multi-family 125,080 — — — 125,080 1-4 family 29,051 7,824 1,233 2,065 40,173 Total commercial real estate 887,369 48,485 11,746 19,153 966,753 Commercial and industrial 348,179 26,605 58,470 13,969 447,223 Direct financing leases, net 26,854 305 1,709 — 28,868 Consumer and other: Home equity and second mortgages 7,764 — 8 4 7,776 Other 17,066 — — 381 17,447 Total consumer and other 24,830 — 8 385 25,223 Total gross loans and leases receivable $ 1,287,232 $ 75,395 $ 71,933 $ 33,507 $ 1,468,067 Category as a % of total portfolio 87.68 % 5.14 % 4.90 % 2.28 % 100.00 % December 31, 2016 Category I II III IV Total (Dollars in Thousands) Commercial real estate: Commercial real estate — owner occupied $ 142,704 $ 20,294 $ 11,174 $ 2,287 $ 176,459 Commercial real estate — non-owner occupied 447,895 20,933 2,721 1,609 473,158 Land development 52,082 823 293 3,440 56,638 Construction 93,510 3,154 1,624 2,918 101,206 Multi-family 87,418 1,937 3,407 — 92,762 1-4 family 38,504 3,144 1,431 2,572 45,651 Total commercial real estate 862,113 50,285 20,650 12,826 945,874 Commercial and industrial 348,201 42,949 46,675 12,473 450,298 Direct financing leases, net 29,351 1,600 — — 30,951 Consumer and other: Home equity and second mortgages 8,271 121 12 8 8,412 Other 15,714 — 11 604 16,329 Total consumer and other 23,985 121 23 612 24,741 Total gross loans and leases receivable $ 1,263,650 $ 94,955 $ 67,348 $ 25,911 $ 1,451,864 Category as a % of total portfolio 87.04 % 6.54 % 4.64 % 1.78 % 100.00 % Credit underwriting through a committee process is a key component of the Corporation’s operating philosophy. Commercial lenders have relatively low individual lending authority limits, and thus a significant portion of the Corporation’s new credit extensions require approval from a loan approval committee regardless of the type of loan or lease, asset quality grade of the credit, amount of the credit or the related complexities of each proposal. Each credit is evaluated for proper risk rating upon origination, at the time of each subsequent renewal, upon receipt and evaluation of updated financial information from the Corporation’s borrowers or as other circumstances dictate. The Corporation uses a nine grade risk rating system to monitor the ongoing credit quality of its loans and leases. The risk rating grades follow a consistent definition and are then applied to specific loan types based on the nature of the loan. Each risk rating is subjective and, depending on the size and nature of the credit, subject to various levels of review and concurrence on the stated risk rating. In addition to its nine grade risk rating system, the Corporation groups loans into four loan and related risk categories which determine the level and nature of review by management. Category I — Loans and leases in this category are performing in accordance with the terms of the contract and generally exhibit no immediate concerns regarding the security and viability of the underlying collateral, financial stability of the borrower, integrity or strength of the borrowers’ management team or the industry in which the borrower operates. The Corporation monitors Category I loans and leases through payment performance, continued maintenance of its personal relationships with such borrowers and continued review of such borrowers’ compliance with the terms of their respective agreements. Category II — Loans and leases in this category are beginning to show signs of deterioration in one or more of the Corporation’s core underwriting criteria such as financial stability, management strength, industry trends or collateral values. Management will place credits in this category to allow for proactive monitoring and resolution with the borrower to possibly mitigate the area of concern and prevent further deterioration or risk of loss to the Corporation. Category II loans are considered performing but are monitored frequently by the assigned business development officer and by subcommittees of the Bank’s Loan Committee. Category III — Loans and leases in this category are identified by management as warranting special attention. However, the balance in this category is not intended to represent the amount of adversely classified assets held by the Bank. Category III loans and leases generally exhibit undesirable characteristics, such as evidence of adverse financial trends and conditions, managerial problems, deteriorating economic conditions within the related industry or evidence of adverse public filings and may exhibit collateral shortfall positions. Management continues to believe that it will collect all contractual principal and interest in accordance with the original terms of the contracts relating to the loans and leases in this category, and therefore Category III loans are considered performing with no specific reserves established for this category. Category III loans are monitored by management and the Bank’s Loan Committee on a monthly basis and the Bank’s Board of Directors at each of their regularly scheduled meetings. Category IV — Loans and leases in this category are considered to be impaired. Impaired loans and leases have been placed on non-accrual as management has determined that it is unlikely that the Bank will receive the contractual principal and interest in accordance with the original terms of the agreement. Impaired loans are individually evaluated to assess the need for the establishment of specific reserves or charge-offs. When analyzing the adequacy of collateral, the Corporation obtains external appraisals at least annually for impaired loans and leases. External appraisals are obtained from the Corporation’s approved appraiser listing and are independently reviewed to monitor the quality of such appraisals. To the extent a collateral shortfall position is present, a specific reserve or charge-off will be recorded to reflect the magnitude of the impairment. Loans and leases in this category are monitored by management and the Bank’s Loan Committee on a monthly basis and the Bank’s Board of Directors at each of their regularly scheduled meetings. Utilizing regulatory classification terminology, the Corporation identified $36.7 million and $34.3 million of loans and leases as Substandard as of September 30, 2017 and December 31, 2016 , respectively. The Corporation identified $5.1 million of loans and leases as Doubtful as of September 30, 2017 . No loans and leases were considered Doubtful as of December 31, 2016 . Additionally, no loans were considered Special Mention, or Loss as of either September 30, 2017 or December 31, 2016 . The population of Substandard loans is a subset of Category III and Category IV loans. The delinquency aging of the loan and lease portfolio by class of receivable as of September 30, 2017 and December 31, 2016 was as follows: September 30, 2017 30-59 60-89 Greater Total Past Due Current Total Loans and Leases (Dollars in Thousands) Accruing loans and leases Commercial real estate: Owner occupied $ — $ — $ — $ — $ 175,675 $ 175,675 Non-owner occupied — — — — 459,760 459,760 Land development — — — — 38,729 38,729 Construction 392 — — 392 109,914 110,306 Multi-family — — — — 125,080 125,080 1-4 family — — — — 38,309 38,309 Commercial and industrial 2,257 470 — 2,727 430,539 433,266 Direct financing leases, net — — — — 28,868 28,868 Consumer and other: Home equity and second mortgages 229 — — 229 7,547 7,776 Other — — — — 17,066 17,066 Total 2,878 470 — 3,348 1,431,487 1,434,835 Non-accruing loans and leases Commercial real estate: Owner occupied — — 4,825 4,825 2,255 7,080 Non-owner occupied — — 1,791 1,791 35 1,826 Land development — — — — 2,770 2,770 Construction — — 5,353 5,353 1 5,354 Multi-family — — — — — — 1-4 family 529 10 1,041 1,580 284 1,864 Commercial and industrial 207 497 11,005 11,709 2,248 13,957 Direct financing leases, net — — — — — — Consumer and other: Home equity and second mortgages — — — — — — Other — — 358 358 23 381 Total 736 507 24,373 25,616 7,616 — 33,232 Total loans and leases Commercial real estate: Owner occupied — — 4,825 4,825 177,930 182,755 Non-owner occupied — — 1,791 1,791 459,795 461,586 Land development — — — — 41,499 41,499 Construction 392 — 5,353 5,745 109,915 115,660 Multi-family — — — — 125,080 125,080 1-4 family 529 10 1,041 1,580 38,593 40,173 Commercial and industrial 2,464 967 11,005 14,436 432,787 447,223 Direct financing leases, net — — — — 28,868 28,868 Consumer and other: Home equity and second mortgages 229 — — 229 7,547 7,776 Other — — 358 358 17,089 17,447 Total $ 3,614 $ 977 $ 24,373 $ 28,964 $ 1,439,103 $ 1,468,067 Percent of portfolio 0.24 % 0.07 % 1.66 % 1.97 % 98.03 % 100.00 % December 31, 2016 30-59 60-89 Greater Total Past Due Current Total Loans and Leases (Dollars in Thousands) Accruing loans and leases Commercial real estate: Owner occupied $ — $ — $ — $ — $ 174,236 $ 174,236 Non-owner occupied — — — — 471,549 471,549 Land development — — — — 53,198 53,198 Construction — — — — 98,288 98,288 Multi-family — — — — 92,762 92,762 1-4 family 75 — — 75 43,639 43,714 Commercial and industrial 55 468 — 523 437,312 437,835 Direct financing leases, net — — — — 30,951 30,951 Consumer and other: Home equity and second mortgages — — — — 8,412 8,412 Other — — — — 15,725 15,725 Total 130 468 — 598 1,426,072 1,426,670 Non-accruing loans and leases Commercial real estate: Owner occupied — — 1,183 1,183 1,040 2,223 Non-owner occupied — — — — 1,609 1,609 Land development — — — — 3,440 3,440 Construction 2,482 — 436 2,918 — 2,918 Multi-family — — — — — — 1-4 family — — 1,240 1,240 697 1,937 Commercial and industrial 3,345 168 6,740 10,253 2,210 12,463 Direct financing leases, net — — — — — — Consumer and other: Home equity and second mortgages — — — — — — Other 186 — 378 564 40 604 Total 6,013 168 9,977 16,158 9,036 25,194 Total loans and leases Commercial real estate: Owner occupied — — 1,183 1,183 175,276 176,459 Non-owner occupied — — — — 473,158 473,158 Land development — — — — 56,638 56,638 Construction 2,482 — 436 2,918 98,288 101,206 Multi-family — — — — 92,762 92,762 1-4 family 75 — 1,240 1,315 44,336 45,651 Commercial and industrial 3,400 636 6,740 10,776 439,522 450,298 Direct financing leases, net — — — — 30,951 30,951 Consumer and other: Home equity and second mortgages — — — — 8,412 8,412 Other 186 — 378 564 15,765 16,329 Total $ 6,143 $ 636 $ 9,977 $ 16,756 $ 1,435,108 $ 1,451,864 Percent of portfolio 0.42 % 0.04 % 0.69 % 1.15 % 98.85 % 100.00 % The Corporation’s total impaired assets consisted of the following at September 30, 2017 and December 31, 2016 , respectively. September 30, December 31, (Dollars in Thousands) Non-accrual loans and leases Commercial real estate: Commercial real estate — owner occupied $ 7,080 $ 2,223 Commercial real estate — non-owner occupied 1,826 1,609 Land development 2,770 3,440 Construction 5,354 2,918 Multi-family — — 1-4 family 1,864 1,937 Total non-accrual commercial real estate 18,894 12,127 Commercial and industrial 13,957 12,463 Direct financing leases, net — — Consumer and other: Home equity and second mortgages — — Other 381 604 Total non-accrual consumer and other loans 381 604 Total non-accrual loans and leases 33,232 25,194 Foreclosed properties, net 2,585 1,472 Total non-performing assets 35,817 26,666 Performing troubled debt restructurings 275 717 Total impaired assets $ 36,092 $ 27,383 September 30, December 31, Total non-accrual loans and leases to gross loans and leases 2.26 % 1.74 % Total non-performing assets to total gross loans and leases plus foreclosed properties, net 2.44 1.83 Total non-performing assets to total assets 2.01 1.50 Allowance for loan and lease losses to gross loans and leases 1.36 1.44 Allowance for loan and lease losses to non-accrual loans and leases 59.95 83.00 As of September 30, 2017 and December 31, 2016 , $10.9 million and $12.8 million of the non-accrual loans and leases were considered troubled debt restructurings, respectively. There were no unfunded commitments associated with troubled debt restructured loans and leases as of September 30, 2017 . The following table provides the number of loans modified in a troubled debt restructuring and the pre- and post-modification recorded investment by class of receivable as of September 30, 2017 and December 31, 2016 . As of September 30, 2017 As of December 31, 2016 Number of Loans Pre-Modification Recorded Investment Post-Modification Recorded Investment Number of Loans Pre-Modification Recorded Investment Post-Modification Recorded Investment (Dollars in Thousands) Commercial real estate: Commercial real estate — owner occupied 3 $ 1,065 $ 888 3 $ 1,065 $ 930 Commercial real estate — non-owner occupied 1 158 35 1 158 39 Land development 1 5,745 2,770 1 5,745 3,440 Construction — — — 2 331 314 Multi-family — — — — — — 1-4 family 10 1,287 1,353 11 1,391 1,393 Commercial and industrial 11 8,944 5,759 10 8,094 7,058 Consumer and other: Home equity and second mortgage 1 37 4 1 37 8 Other 2 2,094 359 1 2,076 378 Total 29 $ 19,330 $ 11,168 30 $ 18,897 $ 13,560 All loans and leases modified as a troubled debt restructuring are measured for impairment. The nature and extent of the impairment of restructured loans, including those which have experienced a default, is considered in the determination of an appropriate level of the allowance for loan and lease losses. As of September 30, 2017 and December 31, 2016 , the Corporation’s troubled debt restructurings grouped by type of concession were as follows: As of September 30, 2017 As of December 31, 2016 Number of Loans Recorded Investment Number of Loans Recorded Investment (Dollars in Thousands) Commercial real estate: Extension of term — $ — 1 $ 8 Interest rate concession 1 49 1 52 Combination of extension of term and interest rate concession 14 4,997 16 6,056 Commercial and industrial: Combination of extension of term and interest rate concession 11 5,759 10 7,058 Consumer and other: Extension of term 1 342 1 378 Combination of extension of term and interest rate concession 2 21 1 8 Total 29 $ 11,168 30 $ 13,560 During the three months ended September 30, 2017 , two commercial and industrial loans totaling $800,000 were modified to a troubled debt restructuring. During the nine months ended September 30, 2017 , four commercial and industrial loans and one consumer loan totaling $4.4 million and $17,000 , respectively, were modified to a troubled debt restructuring. No loans were modified to a troubled debt restructuring during the three and nine months ended September 30, 2016. There were five loans and leases modified in a troubled debt restructuring during the previous 12 months which subsequently defaulted during the three and nine months ended September 30, 2017 . The following represents additional information regarding the Corporation’s impaired loans and leases, including performing troubled debt restructurings, by class: As of and for the Nine Months Ended September 30, 2017 Recorded Unpaid Impairment Average (1) Foregone Interest Net (In Thousands) With no impairment reserve recorded: Commercial real estate: Owner occupied $ 6,727 $ 6,727 $ — $ 4,898 $ 394 $ — $ 394 Non-owner occupied 1,826 1,866 — 1,932 99 — 99 Land development 2,770 5,441 — 3,218 65 — 65 Construction 2,482 2,482 — 611 208 — 208 Multi-family — — — 1 — — — 1-4 family 2,065 2,319 — 2,387 69 — 69 Commercial and industrial 1,740 2,103 — 6,782 509 — 509 Direct financing leases, net — — — — — — — Consumer and other: Home equity and second mortgages 4 4 — 6 — — — Other 358 1,025 — 397 45 — 45 Total 17,972 21,967 — 20,232 1,389 — 1,389 With impairment reserve recorded: Commercial real estate: Owner occupied 411 411 15 424 19 — 19 Non-owner occupied — — — — — — — Land development — — — — — — — — — — Construction 2,872 2,872 — 94 4,091 — 108 — — 108 Multi-family — — — — — — — 1-4 family — — — — — — — Commercial and industrial 12,229 12,702 5,658 10,114 453 — 453 Direct financing leases, net — — — — — — — Consumer and other: Home equity and second mortgages — — — — — — — Other 23 23 23 10 — — — Total 15,535 16,008 5,790 14,639 580 — 580 Total: Commercial real estate: Owner occupied 7,138 7,138 15 5,322 413 — 413 Non-owner occupied 1,826 1,866 — 1,932 99 — 99 Land development 2,770 5,441 — 3,218 65 — 65 Construction 5,354 5,354 94 4,702 316 — 316 Multi-family — — — 1 — — — 1-4 family 2,065 2,319 — 2,387 69 — 69 Commercial and industrial 13,969 14,805 5,658 16,896 962 — 962 Direct financing leases, net — — — — — — — Consumer and other: Home equity and second mortgages 4 4 — 6 — — — Other 381 1,048 23 407 45 — 45 Grand total $ 33,507 $ 37,975 $ 5,790 $ 34,871 $ 1,969 $ — $ 1,969 (1) Average recorded investment is calculated primarily using daily average balances. As of and for the Year Ended December 31, 2016 Recorded Investment Unpaid Principal Balance Impairment Reserve Average Recorded Investment (1) Foregone Interest Income Interest Income Recognized Net Foregone Interest Income (In Thousands) With no impairment reserve recorded: Commercial real estate: Owner occupied $ 1,788 $ 1,788 $ — $ 3,577 $ 328 $ 118 $ 210 Non-owner occupied 1,609 1,647 — 1,318 91 79 12 Land development 3,440 6,111 — 3,898 107 — 107 Construction 436 438 — 291 20 — 20 Multi-family — — — — 1 134 (133 ) 1-4 family 2,379 2,379 — 2,755 125 94 31 Commercial and industrial 1,307 1,307 — 709 79 62 17 Direct financing leases, net — — — 6 — — — Consumer and other: Home equity and second mortgages 8 8 — 307 16 127 (111 ) Other 378 1,044 — 510 71 — 71 Total 11,345 14,722 — 13,371 838 614 224 With impairment reserve recorded: Commercial real estate: Owner occupied 499 499 70 111 28 — 28 Non-owner occupied — — — — — — — Land development — — — — — — — Construction 2,482 2,482 1,790 834 45 — 45 Multi-family — — — — — — — 1-4 family 193 199 39 203 5 — 5 Commercial and industrial 11,166 11,166 3,700 8,448 701 — 701 Direct financing leases, net — — — — — — — Consumer and other: Home equity and second mortgages — — — — — — — Other 226 226 — 19 — — — Total 14,566 14,572 5,599 9,615 779 — 779 Total: Commercial real estate: Owner occupied 2,287 2,287 70 3,688 356 118 238 Non-owner occupied 1,609 1,647 — 1,318 91 79 12 Land development 3,440 6,111 — 3,898 107 — 107 Construction 2,918 2,920 1,790 1,125 65 — 65 Multi-family — — — — 1 134 (133 ) 1-4 family 2,572 2,578 39 2,958 130 94 36 Commercial and industrial 12,473 12,473 3,700 9,157 780 62 718 Direct financing leases, net — — — 6 — — — Consumer and other: Home equity and second mortgages 8 8 — 307 16 127 (111 ) Other 604 1,270 — 529 71 — 71 Grand total $ 25,911 $ 29,294 $ 5,599 $ 22,986 $ 1,617 $ 614 $ 1,003 (1) Average recorded investment is calculated primarily using daily average balances. The difference between the recorded investment of loans and leases and the unpaid principal balance of $4.5 million and $3.4 million as of September 30, 2017 and December 31, 2016 , respectively, represents partial charge-offs of loans and leases resulting from losses due to the appraised value of the collateral securing the loans and leases being below the carrying values of the loans and leases. Impaired loans and leases also included $275,000 and $717,000 of loans as of September 30, 2017 and December 31, 2016 , respectively, that were performing troubled debt restructurings, and although not on non-accrual, were reported as impaired due to the concession in terms. When a loan is placed on non-accrual, interest accrual is discontinued and previously accrued but uncollected interest is deducted from interest income. Cash payments collected on non-accrual loans are first applied to such loan’s principal. Foregone interest represents the interest that was contractually due on the loan but not received or recorded. To the extent the amount of principal on a non-accrual loan is fully collected and additional cash is received, the Corporation will recognize interest income. To determine the level and composition of the allowance for loan and lease losses, the Corporation categorizes the portfolio into segments with similar risk characteristics. First, the Corporation evaluates loans and leases for potential impairment classification. The Corporation analyzes each loan and lease determined to be impaired on an individual basis to determine a specific reserve based upon the estimated value of the underlying collateral for collateral-dependent loans, or alternatively, the present value of expected cash flows. The Corporation applies historical trends from established risk factors to each category of loans and leases that has not been individually evaluated for the purpose of establishing the general portion of the allowance. A summary of the activity in the allowance for loan and lease losses by portfolio segment is as follows: As of and for the Three Months Ended September 30, 2017 Commercial Real Estate Commercial and Industrial Consumer and Other Total (Dollars in Thousands) Beginning balance $ 12,003 $ 9,090 $ 584 $ 21,677 Charge-offs (8 ) (3,217 ) (5 ) (3,230 ) Recoveries 2 2 1 5 Net charge-offs (6 ) (3,215 ) (4 ) (3,225 ) Provision for credit losses (2,462 ) 3,968 (35 ) 1,471 Ending balance $ 9,535 $ 9,843 $ 545 $ 19,923 As of and for the Three Months Ended September 30, 2016 Commercial Real Estate Commercial and Industrial Consumer and Other Total (Dollars in Thousands) Beginning balance $ 11,436 $ 6,017 $ 701 $ 18,154 Charge-offs (259 ) (1,396 ) (1 ) (1,656 ) Recoveries 31 — 1 32 Net charge-offs (228 ) (1,396 ) — (1,624 ) Provision for credit losses 1,607 2,051 (121 ) 3,537 Ending balance $ 12,815 $ 6,672 $ 580 $ 20,067 As of and for the Nine Months Ended September 30, 2017 Commercial Real Estate Commercial and Industrial Consumer and Other Total (Dollars in Thousands) Beginning balance $ 12,384 $ 7,970 $ 558 $ 20,912 Charge-offs (126 ) (6,978 ) (92 ) (7,196 ) Recoveries 152 314 42 508 Net recoveries (charge-offs) 26 (6,664 ) (50 ) (6,688 ) Provision for credit loss (2,875 ) 8,537 37 5,699 Ending balance $ 9,535 $ 9,843 $ 545 $ 19,923 As of and for the Nine Months Ended September 30, 2016 Commercial Real Estate Commercial and Industrial Consumer and Other Total (Dollars in Thousands) Beginning balance $ 11,220 $ 4,387 $ 709 $ 16,316 Charge-offs (1,194 ) (2,048 ) (8 ) (3,250 ) Recoveries 170 2 5 177 Net charge-offs (1,024 ) (2,046 ) (3 ) (3,073 ) Provision for credit loss 2,619 4,331 (126 ) 6,824 Ending balance $ 12,815 $ 6,672 $ 580 $ 20,067 The following tables provide information regarding the allowance for loan and lease losses and balances by type of allowance methodology. As of September 30, 2017 Commercial Real Estate Commercial and Industrial Consumer and Other Total (Dollars in Thousands) Allowance for loan and lease losses: Collectively evaluated for impairment $ 9,426 $ 4,185 $ 522 $ 14,133 Individually evaluated for impairment 109 5,658 23 5,790 Loans acquired with deteriorated credit quality — — — — Total $ 9,535 $ 9,843 $ 545 $ 19,923 Loans and lease receivables: Collectively evaluated for impairment $ 947,600 $ 462,122 $ 24,838 $ 1,434,560 Individually evaluated for impairment 18,535 13,962 385 32,882 Loans acquired with deteriorated credit quality 618 7 — 625 Total $ 966,753 $ 476,091 $ 25,223 $ 1,468,067 As of December 31, 2016 Commercial Real Estate Commercial and Industrial Consumer and Other Total (Dollars in Thousands) Allowance for loan and lease losses: Collectively evaluated for impairment $ 10,485 $ 4,270 $ 558 $ 15,313 Individually evaluated for impairment 1,899 3,700 — 5,599 Loans acquired with deteriorated credit quality — — — — Total $ 12,384 $ 7,970 $ 558 $ 20,912 Loans and lease receivables: Collectively evaluated for impairment $ 933,048 $ 468,776 $ 24,129 $ 1,425,953 Individually evaluated for impairment 11,222 12,452 612 24,286 Loans acquired with deteriorated credit quality 1,604 21 — 1,625 Total $ 945,874 $ 481,249 $ 24,741 $ 1,451,864

Other Assets (Notes)

Other Assets (Notes)	9 Months Ended
	Sep. 30, 2017
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]
Other Assets	Note 6 — Other Assets The Corporation is a limited partner in several limited partnership investments. The Corporation is not the general partner, does not have controlling ownership and is not the primary beneficiary in any of these limited partnerships and the limited partnerships have not been consolidated. These investments are accounted for using the equity method of accounting and are evaluated for impairment at the end of each reporting period. For historic rehabilitation tax credits, the Corporation begins to evaluate its investments for impairment at the time the credit is earned, which is typically in the year the project is placed in service, through the end of its five-year compliance period. New market tax credits are also evaluated for impairment beginning at the time the tax credits are earned on the project through the seven-year compliance period. Historic Rehabilitation Tax Credits In 2015, the Corporation invested in a development entity through BOC, a wholly-owned subsidiary of FBB, to acquire, rehabilitate and operate a historic building in Madison, Wisconsin. At September 30, 2017 and December 31, 2016 , the net carrying value of the investment was $174,000 . In 2016, the Corporation also invested in a development entity through Mitchell Street, a wholly-owned subsidiary of FBB, to rehabilitate a historic building in Milwaukee, Wisconsin. At September 30, 2017 and December 31, 2016 , the net carrying value of the investment was $563,000 . The aggregate capital contributions to the project will depend upon the final amount of the certified project costs, but are expected to approximate $5.5 million . The Corporation is also anticipating the sale of the state credits associated with the investment to a third party. No historic tax credits were received at September 30, 2017 . The credits will be taken when the project is placed in service and are subject to a five-year recapture period. In 2017, the Corporation also invested in a development entity through FBB Tax Credit, a wholly-owned subsidiary of FBB, to rehabilitate a historic building in Kenosha, Wisconsin. At September 30, 2017, the net carrying value of the investment was $417,000 . The aggregate capital contributions to the project will depend upon the final amount of the certified project costs, but are expected to approximate $2.1 million . The credits will be taken when the project is placed in service and are subject to a five-year recapture period. New Market Tax Credits The Corporation invested in a community development entity (“CDE”) through Rimrock Road, a wholly-owned subsidiary of FBB, to develop and operate a real estate project located in a low-income community. At September 30, 2017 and December 31, 2016 , Rimrock had one CDE investment with a net carrying value of $6.7 million and $7.1 million , respectively. The investment provides federal new market tax credits over a seven -year credit allowance period through 2020. The remaining federal new market tax credit to be utilized over a maximum of seven years was $1.5 million as of September 30, 2017 . The Corporation’s use of the federal new market tax credit during the nine months ended September 30, 2017 and 2016 was $338,000 and $281,000 , respectively. Other Investments The Corporation has an equity investment in Aldine Capital Fund, LP, a mezzanine fund, of $948,000 and $883,000 recorded as of September 30, 2017 and December 31, 2016 , respectively. The Corporation’s equity investment in Aldine Capital Fund II, LP, also a mezzanine fund, totaled $3.7 million and $3.1 million as of September 30, 2017 and December 31, 2016 , respectively. The Corporation’s share of these partnerships’ income included in the unaudited Consolidated Statements of Income for the nine months ended September 30, 2017 and 2016 was $236,000 and $708,000 , respectively. The Corporation is the sole owner of $315,000 of common securities issued by Trust II, a Delaware business trust. The purpose of Trust II was to complete the sale of $10.0 million of 10.50% fixed rate preferred securities. Trust II, a wholly owned subsidiary of the Corporation, is not consolidated into the financial statements of the Corporation. The investment in Trust II of $315,000 as of September 30, 2017 and December 31, 2016 is included in accrued interest receivable and other assets. A summary of accrued interest receivable and other assets is as follows: September 30, 2017 December 31, 2016 (In Thousands) Accrued interest receivable $ 4,722 $ 4,677 Net deferred tax asset 5,543 4,052 Investment in historic development entities 1,154 737 Investment in a CDE 6,719 7,106 Investment in limited partnerships 4,607 3,963 Investment in Trust II 315 315 Fair value of interest rate swaps 1,380 352 Prepaid expenses 3,338 3,074 Other assets 4,450 4,331 Total accrued interest receivable and other assets $ 32,228 $ 28,607

Deposits

Deposits	9 Months Ended
	Sep. 30, 2017
Deposits [Abstract]
Deposits	Deposits The composition of deposits at September 30, 2017 and December 31, 2016 is shown below. Average balances represent year-to-date averages. September 30, 2017 December 31, 2016 Balance Average Balance Average Rate Balance Average Balance Average Rate (Dollars in Thousands) Non-interest-bearing transaction accounts $ 253,320 $ 228,231 — % $ 252,638 $ 246,182 — % Interest-bearing transaction accounts 251,355 221,526 0.53 183,992 169,571 0.27 Money market accounts 527,705 601,455 0.45 627,090 642,784 0.48 Certificates of deposit 58,144 55,888 0.98 58,454 65,608 0.90 Wholesale deposits 333,200 374,083 1.68 416,681 467,826 1.62 Total deposits $ 1,423,724 $ 1,481,183 0.72 $ 1,538,855 $ 1,591,971 0.74

FHLB Advances, Other Borrowings

FHLB Advances, Other Borrowings and Junior Subordinated Notes Payable	9 Months Ended
	Sep. 30, 2017
Debt Disclosure [Abstract]
FHLB Advances, Other Borrowings and Junior Subordinated Notes Payable	FHLB Advances, Other Borrowings and Junior Subordinated Notes The composition of borrowed funds at September 30, 2017 and December 31, 2016 is shown below. Average balances represent year-to-date averages. September 30, 2017 December 31, 2016 Balance Weighted Average Balance Weighted Average Rate Balance Weighted Average Balance Weighted Average Rate (Dollars in Thousands) Federal funds purchased $ — $ 88 1.21 % $ — $ 178 0.92 % FHLB advances 143,500 83,987 1.24 33,578 14,485 0.97 Line of credit 10 435 3.63 1,010 2,079 3.26 Other borrowings (1) 675 1,432 15.37 2,590 1,739 7.64 Subordinated notes payable 23,699 22,978 7.04 22,498 22,467 7.13 Junior subordinated notes 10,015 10,009 11.08 10,004 9,997 11.07 $ 177,899 $ 118,929 3.38 $ 69,680 $ 50,945 6.03 Short-term borrowings $ 54,510 $ 20,588 Long-term borrowings 123,389 49,092 $ 177,899 $ 69,680 (1) Weighted average rate of other borrowings reflects the cost of prepaying a secured borrowing during the second quarter of 2017. As of September 30, 2017 and December 31, 2016 , the Corporation was in compliance with its debt covenants under its third-party secured senior line of credit. Per the promissory note dated February 19, 2017, the Corporation pays a commitment fee on this line of credit. During both the nine months ended September 30, 2017 and 2016 , the Corporation incurred interest expense due to this fee of $10,000 .

Commitments and Contingencies (

Commitments and Contingencies (Notes)	9 Months Ended
	Sep. 30, 2017
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies Disclosure [Text Block]	Commitments and Contingencies In the ordinary course of business, the Corporation sells the guaranteed portion of SBA loans, as well as participation interests in other originated loans, to third parties. The Corporation has a continuing involvement in each of the transferred lending arrangements by way of relationship management and servicing the loans, as well as being subject to normal and customary requirements of the SBA loan program and standard representations and warranties related to sold amounts. In the event of a loss resulting from default and a determination by the SBA that there is a deficiency in the manner in which the loan was originated, funded or serviced by the Corporation, the SBA may require the Corporation to repurchase the loan, deny its liability under the guaranty, reduce the amount of the guaranty, or, if it has already paid under the guaranty, seek recovery of the principal loss related to the deficiency from the Corporation. The Corporation must comply with applicable SBA regulations in order to maintain the guaranty. In addition, the Corporation retains the option to repurchase the sold guaranteed portion of an SBA loan if the loan defaults. Management has assessed estimated losses inherent in the outstanding guaranteed portion of SBA loans sold in accordance with ASC 450, Contingencies , and determined a recourse reserve based on the probability of future losses for these loans to be $2.7 million at September 30, 2017 , which is reported in accrued interest payable and other liabilities on the unaudited Consolidated Balance Sheets. During the nine months ended September 30, 2017 , a $2.1 million recourse provision was recorded. The summary of the activity in the SBA recourse reserve is as follows: As of and for the Nine Months Ended September 30, 2017 As of and for the Year Ended December 31, 2016 (In Thousands) Balance at the beginning of the period $ 1,750 $ — SBA recourse provision 2,095 2,068 Charge-offs, net (1,141 ) (318 ) Balance at the end of the period $ 2,704 $ 1,750 In the normal course of business, various legal proceedings involving the Corporation are pending. Management, based upon advice from legal counsel, does not anticipate any significant losses as a result of these actions. Management believes that any liability arising from any such proceedings currently existing or threatened will not have a material adverse effect on the Corporation’s financial position, results of operations and cash flows.

Fair Value Disclosures

Fair Value Disclosures	9 Months Ended
	Sep. 30, 2017
Fair Value Disclosures [Abstract]
Fair Value Disclosures	Fair Value Disclosures The Corporation determines the fair values of its financial instruments based on the fair value hierarchy established in ASC Topic 820, which requires an entity to maximize the use of observable inputs and minimize the use of unobservable inputs when measuring fair value. Fair value is defined as the price that would be received in an orderly transaction that is not a forced liquidation or distressed sale at the measurement date and is based on exit prices. Fair value includes assumptions about risk, such as nonperformance risk in liability fair values, and is a market-based measurement, not an entity-specific measurement. The standard describes three levels of inputs that may be used to measure fair value. Level 1 — Level 1 inputs are unadjusted quoted prices in active markets for identical assets or liabilities that the Corporation has the ability to access at the measurement date. Level 2 — Level 2 inputs are inputs, other than quoted prices included with Level 1, that are observable for the asset or liability either directly or indirectly, such as quoted prices for similar assets or liabilities; quoted prices in markets that are not active; or other inputs that are observable or can be corroborated by observable market data for substantially the full term of the assets or liabilities. Level 3 — Level 3 inputs are supported by little or no market activity and are significant to the fair value of the assets or liabilities. In instances where the determination of the fair value measurement is based on inputs from different levels of the fair value hierarchy, the level in the fair value hierarchy within which the entire fair value measurement falls is based on the lowest level input that is significant to the fair value measurement in its entirety. The Corporation’s assessment of the significance of a particular input to the fair value measurement in its entirety requires judgment and considers factors specific to the asset or liability. Assets and liabilities measured at fair value on a recurring basis, segregated by fair value hierarchy level, are summarized below: September 30, 2017 Fair Value Measurements Using Level 1 Level 2 Level 3 Total (In Thousands) Assets: Securities available-for-sale: U.S. Government agency obligations - government-sponsored enterprises $ — $ 3,807 $ — $ 3,807 Municipal obligations — 9,332 — 9,332 Collateralized mortgage obligations - government issued — 22,902 — 22,902 Collateralized mortgage obligations - government-sponsored enterprises — 95,089 — 95,089 Interest rate swaps — 1,380 — 1,380 Liabilities: Interest rate swaps — 1,380 — 1,380 December 31, 2016 Fair Value Measurements Using Level 1 Level 2 Level 3 Total (In Thousands) Assets: Securities available-for-sale: U.S. Government agency obligations - government-sponsored enterprises $ — $ 6,295 $ — $ 6,295 Municipal obligations — 8,156 — 8,156 Asset backed securities — 1,081 — 1,081 Collateralized mortgage obligations - government issued — 31,213 — 31,213 Collateralized mortgage obligations - government-sponsored enterprises — 99,148 — 99,148 Interest rate swaps — 352 — 352 Liabilities: Interest rate swaps — 352 — 352 For assets and liabilities measured at fair value on a recurring basis, there were no transfers between the levels during the nine months ended September 30, 2017 or the year ended December 31, 2016 related to the above measurements. Assets and liabilities measured at fair value on a non-recurring basis, segregated by fair value hierarchy are summarized below: September 30, 2017 Fair Value Measurements Using Level 1 Level 2 Level 3 Total (In Thousands) Impaired loans $ — $ 7,637 $ 8,661 $ 16,298 Foreclosed properties — 1,472 — 1,472 December 31, 2016 Fair Value Measurements Using Level 1 Level 2 Level 3 Total (In Thousands) Impaired loans $ — $ 12,268 $ 1,097 $ 13,365 Foreclosed properties — 1,472 — 1,472 Impaired loans were written down to the fair value of their underlying collateral less costs to sell of $16.3 million and $13.4 million at September 30, 2017 and December 31, 2016 , respectively, through the establishment of specific reserves or by recording charge-offs when the carrying value exceeded the fair value of the underlying collateral of impaired loans. Valuation techniques consistent with the market approach, income approach or cost approach were used to measure fair value and primarily included observable inputs for the individual impaired loans being evaluated such as current appraisals, recent sales of similar assets or other observable market data, and are reflected within Level 2 of the hierarchy. In cases where an input is unobservable, specifically when discounts are applied to appraisal values to adjust such values to current market conditions or to reflect net realizable value, the impaired loan balance is reflected within Level 3 of the hierarchy. The quantification of unobservable inputs for Level 3 impaired loan values range from 13% - 90% as of the measurement date of September 30, 2017 . The weighted average of those unobservable inputs was 20% . The majority of the impaired loans in the Level 3 category are considered collateral dependent loans or are supported by a SBA guaranty. Foreclosed properties, upon initial recognition, are remeasured and reported at fair value through a charge-off to the allowance for loan and lease losses, if deemed necessary, based upon the fair value of the foreclosed property. The fair value of a foreclosed property, upon initial recognition, is estimated using a market approach or Level 2 inputs based on observable market data, typically a current appraisal, or Level 3 inputs based upon assumptions specific to the individual property or equipment. Level 3 inputs typically include unobservable inputs such as management applied discounts used to further reduce values to a net realizable value and may be used in situations when observable inputs become stale. Foreclosed property fair value inputs may transition to Level 1 upon receipt of an accepted offer for the sale of the related foreclosed property. Fair Value of Financial Instruments The Corporation is required to disclose estimated fair values for its financial instruments. Fair value estimates, methods and assumptions, consistent with exit price concepts for fair value measurements, are set forth below: September 30, 2017 Carrying Amount Fair Value Total Level 1 Level 2 Level 3 (In Thousands) Financial assets: Cash and cash equivalents $ 73,196 $ 73,218 $ 56,487 $ 16,731 $ — Securities available-for-sale 131,130 131,130 — 131,130 — Securities held-to-maturity 38,873 39,274 — 39,274 — Loans held for sale — — — — — Loans and lease receivables, net 1,446,790 1,427,071 — 7,637 1,419,434 Bank-owned life insurance 39,988 39,988 39,988 — — Federal Home Loan Bank and Federal Reserve Bank stock 5,083 5,083 — — 5,083 Accrued interest receivable 4,722 4,722 4,722 — — Interest rate swaps 1,380 1,380 — 1,380 — Financial liabilities: Deposits 1,423,724 1,424,275 1,032,379 391,896 — Federal Home Loan Bank advances and other borrowings 167,884 152,391 — 152,391 — Junior subordinated notes 10,015 8,829 — — 8,829 Accrued interest payable 2,317 2,317 2,317 — — Interest rate swaps 1,380 1,380 — 1,380 — Off-balance-sheet items: Standby letters of credit 86 86 — — 86 December 31, 2016 Carrying Amount Fair Value Total Level 1 Level 2 Level 3 (In Thousands) Financial assets: Cash and cash equivalents $ 77,517 $ 77,517 $ 55,622 $ 21,895 $ — Securities available-for-sale 145,893 145,893 — 145,893 — Securities held-to-maturity 38,612 38,520 — 38,520 — Loans held for sale 1,111 1,222 — 1,222 — Loans and lease receivables, net 1,429,763 1,447,044 — 12,268 1,434,776 Bank-owned life insurance 39,048 39,048 — 39,048 — Federal Home Loan Bank and Federal Reserve Bank stock 2,131 2,131 — 2,131 — Accrued interest receivable 4,677 4,677 4,677 — — Interest rate swaps 352 352 — 352 — Financial liabilities: Deposits 1,538,855 1,539,413 1,063,720 475,693 — Federal Home Loan Bank advances and other borrowings 59,676 60,893 — 60,893 — Junior subordinated notes 10,004 9,072 — — 9,072 Accrued interest payable 1,765 1,765 1,765 — — Interest rate swaps 352 352 — 352 — Off-balance-sheet items: Standby letters of credit 58 58 — — 58 Disclosure of fair value information about financial instruments, for which it is practicable to estimate that value, is required whether or not recognized in the unaudited Consolidated Balance Sheets. 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. In that regard, the derived fair value estimates cannot be substantiated by comparison to independent markets and, in many cases, could not be realized in immediate settlement of the instruments. Certain financial instruments and all non-financial instruments are excluded from the disclosure requirements. Accordingly, the aggregate fair value amounts presented do not necessarily represent the underlying value of the Corporation. Cash and Cash Equivalents: The carrying amount reported for cash and due from banks and interest-bearing deposits held by the Corporation approximates fair value because of its immediate availability and because it does not present unanticipated credit concerns. As of September 30, 2017 and December 31, 2016 , the Corporation held $13.4 million and $20.3 million , respectively, of commercial paper. The fair value of commercial paper is classified as a Level 2 input due to the lack of available independent pricing sources. The carrying value of brokered certificates of deposit purchased approximates the fair value for these instruments. The fair value of brokered certificates of deposits purchased is based on the discounted value of contractual cash flows using a discount rate reflective of rates currently offered for deposits of similar remaining maturities. As of both September 30, 2017 and December 31, 2016 , the Corporation held $3.3 million and $1.6 million of brokered certificates of deposits, respectively. Securities: The fair value measurements of investment securities are determined by a third-party pricing service which considers observable data that may include dealer quotes, market spreads, cash flows, the U.S. Treasury yield curve, trade execution data, market consensus prepayment speeds, credit information and the securities’ terms and conditions, among other things. The fair value measurements are subject to independent verification by another pricing source on a quarterly basis to review for reasonableness. Any significant differences in pricing are reviewed with appropriate members of management who have the relevant technical expertise to assess the results. The Corporation has determined that these valuations are classified in Level 2 of the fair value hierarchy. When the independent pricing service does not provide a fair value measurement for a particular security, the Corporation will estimate the fair value based on specific information about each security. Fair values derived in this manner are classified in Level 3 of the fair value hierarchy. Loans Held for Sale: Loans held for sale, which consist of the guaranteed portion of SBA loans, are carried at the lower of cost or estimated fair value. The estimated fair value is based on what secondary markets are currently offering for portfolios with similar characteristics. Loans and Lease Receivables, net: The fair value estimation process for the loan portfolio uses an exit price concept and reflects discounts that the Corporation believes are consistent with liquidity discounts in the market place. Fair values are estimated for portfolios of loans with similar financial characteristics. The fair value of performing and nonperforming loans is calculated by discounting scheduled and expected cash flows through the estimated maturity using estimated market rates that reflect the credit and interest rate risk inherent in the portfolio of loans and then applying a discount factor based upon the embedded credit risk of the loan and the fair value of collateral securing nonperforming loans when the loan is collateral dependent. The estimate of maturity is based on the Bank’s historical experience with repayments for each loan classification, modified, as required, by an estimate of the effect of current economic and lending conditions. Significant unobservable inputs include, but are not limited to, discounts (investor yield premiums) applied to fair value calculations to further determine the exit price value of a portfolio of loans. Federal Home Loan Bank and Federal Reserve Bank Stock: The carrying amount of FHLB and Federal Reserve Bank (“FRB”) stock equals its fair value because the shares may be redeemed by the FHLB and the FRB at their carrying amount of $100 per share. Bank-Owned Life Insurance: The carrying amount of the cash surrender value of life insurance approximates its fair value as the carrying value represents the current settlement amount. Accrued Interest Receivable and Accrued Interest Payable: The carrying amounts reported for accrued interest receivable and accrued interest payable approximate fair value because of their immediate availability and because they do not present unanticipated credit concerns. Deposits: The fair value of deposits with no stated maturity, such as demand deposits and money market accounts, is equal to the amount payable on demand. The fair value of time deposits is based on the discounted value of contractual cash flows. The discount rate is estimated using the rates currently offered for deposits of similar remaining maturities. The fair value estimates do not include the intangible value that results from the funding provided by deposit liabilities compared to borrowing funds in the market. Borrowed Funds: Market rates currently available to the Corporation and Bank for debt with similar terms and remaining maturities are used to estimate fair value of existing debt. Interest Rate Swaps: The carrying amount and fair value of existing derivative financial instruments are based upon independent valuation models, which use widely accepted valuation techniques, including discounted cash flow analysis on the expected cash flows of each derivative contract. This analysis reflects the contractual terms of the derivatives, including the period to maturity, and uses observable market-based inputs, including interest rate curves and implied volatilities. The Corporation incorporates credit valuation adjustments to appropriately reflect both its own nonperformance risk and the respective counterparty’s nonperformance risk in the fair value measurements. In adjusting the fair value of its derivative contracts for the effect of nonperformance risk, the Corporation considers the impact of netting and any applicable credit enhancements, such as collateral postings, thresholds, mutual puts and guarantees. Financial Instruments with Off-Balance-Sheet Risks: The fair value of the Corporation’s off-balance-sheet instruments is based on quoted market prices and fees currently charged to enter into similar agreements, taking into account the remaining terms of the agreements and the credit standing of the related counterparty. Commitments to extend credit and standby letters of credit are generally not marketable. Furthermore, interest rates on any amounts drawn under such commitments would generally be established at market rates at the time of the draw. Fair value would principally derive from the present value of fees received for those products. Limitations: Fair value estimates are made at a discrete point in time, based on relevant market information and information about the financial instrument. These estimates do not reflect any premium or discount that could result from offering for sale at one time the Corporation’s entire holding of a particular financial instrument. Because no market exists for a significant portion of the Corporation’s financial instruments, fair value estimates are based on judgments regarding future expected loss experience, current economic conditions, risk characteristics of various financial instruments and other factors. These estimates are subjective in nature and involve uncertainties and matters of significant judgment and, therefore, cannot be determined with precision. Changes in assumptions could significantly affect the estimates. Fair value estimates are based on existing balance sheet financial instruments without attempting to estimate the value of anticipated future business and the value of assets and liabilities that are not considered financial instruments. In addition, the tax ramifications related to the realization of the unrealized gains and losses can have a significant effect on fair value estimates and are not considered in the estimates.

Derivative Financial Instrument

Derivative Financial Instruments	9 Months Ended
	Sep. 30, 2017
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivative Financial Instruments	Derivative Financial Instruments The Corporation offers interest rate swap products directly to qualified commercial borrowers. The Corporation economically hedges client derivative transactions by entering into offsetting interest rate swap contracts executed with a third party. Derivative transactions executed as part of this program are not designated as accounting hedge relationships and are marked- to-market through earnings each period. The derivative contracts have mirror-image terms, which results in the positions’ changes in fair value primarily offsetting through earnings each period. The credit risk and risk of non-performance embedded in the fair value calculations is different between the dealer counterparties and the commercial borrowers which may result in a difference in the changes in the fair value of the mirror-image swaps. The Corporation incorporates credit valuation adjustments to appropriately reflect both its own non-performance risk and the counterparty’s risk in the fair value measurements. When evaluating the fair value of its derivative contracts for the effects of non-performance and credit risk, the Corporation considered the impact of netting and any applicable credit enhancements such as collateral postings, thresholds and guarantees. At September 30, 2017 , the aggregate amortizing notional value of interest rate swaps with various commercial borrowers was $52.3 million . The Corporation receives fixed rates and pays floating rates based upon LIBOR on the swaps with commercial borrowers. These interest rate swaps mature between September 2018 and March 2034 . Commercial borrower swaps are completed independently with each borrower and are not subject to master netting arrangements. These commercial borrower swaps were reported on the unaudited Consolidated Balance Sheets as a derivative asset of $1.4 million , included in accrued interest receivable and other assets as of September 30, 2017 . In the event of default on a commercial borrower interest rate swap by the counterparty, a right of offset exists to allow for the commercial borrower to set off amounts due against the related commercial loan. As of September 30, 2017 , no interest rate swaps were in default and therefore all values for the commercial borrower swaps are recorded on a gross basis on the unaudited Consolidated Balance Sheets. At September 30, 2017 , the aggregate amortizing notional value of interest rate swaps with dealer counterparties was also $52.3 million . The Corporation pays fixed rates and receives floating rates based upon LIBOR on the swaps with dealer counterparties. These interest rate swaps mature in September 2018 through March 2034 . Dealer counterparty swaps are subject to master netting agreements among the contracts within our Bank and were reported on the unaudited Consolidated Balance Sheets as a net derivative liability of $1.4 million . The value of these swaps was included in accrued interest payable and other liabilities as of September 30, 2017 . The gross amount of dealer counterparty swaps was also $1.4 million as no right of offset existed with the dealer counterparty swaps as of September 30, 2017 . The table below provides information about the balance sheet location and fair value of the Corporation’s derivative instruments as of September 30, 2017 and December 31, 2016 . Interest Rate Swap Contracts Asset Derivatives Liability Derivatives Balance Sheet Location Fair Value Balance Sheet Location Fair Value (In Thousands) Derivatives not designated as hedging instruments September 30, 2017 Accrued interest receivable and other assets $ 1,380 Accrued interest payable and other liabilities $ 1,380 December 31, 2016 Accrued interest receivable and other assets $ 352 Accrued interest payable and other liabilities $ 352 No derivative instruments held by the Corporation for the nine months ended September 30, 2017 were considered hedging instruments. All changes in the fair value of these instruments are recorded in other non-interest income . Given the mirror-image terms of the outstanding derivative portfolio, the change in fair value for the nine months ended September 30, 2017 and 2016 had an insignificant impact on the unaudited Consolidated Statements of Income.

Regulatory Capital

Regulatory Capital	9 Months Ended
	Sep. 30, 2017
Regulatory Capital Requirements [Abstract]
Regulatory Capital	Regulatory Capital The Corporation and the Bank are subject to various regulatory capital requirements administered by Federal and the State of Wisconsin banking agencies. Failure to meet minimum capital requirements can result in certain mandatory, and possibly additional discretionary actions on the part of regulators, that if undertaken, could have a direct material effect on the Bank’s assets, liabilities and certain off-balance-sheet items as calculated under regulatory practices. The Corporation’s and the Bank’s capital amounts and classifications are also subject to qualitative judgments by the regulators about components, risk weightings and other factors. The Corporation regularly reviews and updates when appropriate its Capital and Liquidity Action Plan, which is designed to help ensure appropriate capital adequacy, to plan for future capital needs and to ensure that the Corporation serves as a source of financial strength to the Bank. The Corporation’s and the Bank’s Boards of Directors and management teams adhere to the appropriate regulatory guidelines on decisions which affect their respective capital positions, including but not limited to, decisions relating to the payment of dividends and increasing indebtedness. As a bank holding company, the Corporation’s ability to pay dividends is affected by the policies and enforcement powers of the Board of Governors of the Federal Reserve system (the “Federal Reserve”). Federal Reserve guidance urges financial institutions to strongly consider eliminating, deferring or significantly reducing dividends if: (i) net income available to common shareholders for the past four quarters, net of dividends previously paid during that period, is not sufficient to fully fund the dividend; (ii) the prospective rate of earnings retention is not consistent with the bank holding company’s capital needs and overall current prospective financial condition; or (iii) the bank holding company will not meet, or is in danger of not meeting, its minimum regulatory capital ratios. Management intends, when appropriate under regulatory guidelines, to consult with the Federal Reserve Bank of Chicago and provide it with information on the Corporation’s then-current and prospective earnings and capital position in advance of declaring any cash dividends. As a Wisconsin corporation, the Corporation is subject to the limitations of the Wisconsin Business Corporation Law, which prohibit the Corporation from paying dividends if such payment would: (i) render the Corporation unable to pay its debts as they become due in the usual course of business, or (ii) result in the Corporation’s assets being less than the sum of its total liabilities plus the amount needed to satisfy the preferential rights upon dissolution of any stockholders with preferential rights superior to those stockholders receiving the dividend. The Bank is also subject to certain legal, regulatory and other restrictions on their ability to pay dividends to the Corporation. As a bank holding company, the payment of dividends by the Bank to the Corporation is one of the sources of funds the Corporation could use to pay dividends, if any, in the future and to make other payments. Future dividend decisions by the Bank and the Corporation will continue to be subject to compliance with various legal, regulatory and other restrictions as defined from time to time. Qualitative measures established by regulation to ensure capital adequacy require the Corporation and the Bank to maintain minimum amounts and ratios of Total, Common Equity Tier 1 and Tier 1 capital to risk-weighted assets and of Tier 1 capital to adjusted total assets. These risk-based capital requirements presently address credit risk related to both recorded and off-balance-sheet commitments and obligations. In July 2013, the FRB and the FDIC approved the final rules implementing the Basel Committee on Banking Supervision’s capital guidelines for U.S. banks. These rules are applicable to all financial institutions that are subject to minimum capital requirements, including federal and state banks and savings and loan associations, as well as bank and savings and loan holding companies other than “small bank holding companies” (generally non-publicly traded bank holding companies with consolidated assets of less than $1 billion). Under the final rules, minimum requirements increased for both the quantity and quality of capital held by the Corporation. The rules include a new Common Equity Tier 1 capital to risk-weighted assets minimum ratio of 4.5%, raise the minimum ratio of Tier 1 capital to risk-weighted assets from 4.0% to 6.0%, require a minimum ratio of Total Capital to risk-weighted assets of 8.0%, and require a minimum Tier 1 leverage ratio of 4.0%. The rules also permit banking organizations with less than $15 billion in assets to retain, through a one-time election, the past treatment for accumulated other comprehensive income, which did not affect regulatory capital. The Corporation elected to retain this treatment, which reduces the volatility of regulatory capital ratios. A new capital conservation buffer, comprised of Common Equity Tier 1 capital, was also established above the regulatory minimum capital requirements. This capital conservation buffer will be phased in beginning January 1, 2016 at 0.625% of risk-weighted assets and will increase each subsequent year by an additional 0.625% until reaching its final level of 2.5% on January 1, 2019 . As of September 30, 2017 , both the Corporation’s and the Bank’s capital levels remained characterized as well capitalized under the new rules. The following table summarizes both the Corporation’s and Bank’s capital ratios and the ratios required by their federal regulators at September 30, 2017 : Actual Minimum Required for Capital Adequacy Purposes For Capital Adequacy Purposes Plus Capital Conservation Buffer Minimum Required to Be Well Amount Ratio Amount Ratio Amount Ratio Amount Ratio (Dollars in Thousands) As of September 30, 2017 Total capital (to risk-weighted assets) Consolidated $ 209,495 11.91 % $ 140,737 8.00 % $ 162,727 9.25 % N/A N/A First Business Bank 205,877 11.75 140,132 8.00 162,027 9.25 $ 175,164 10.00 % Tier 1 capital (to risk-weighted assets) Consolidated $ 165,873 9.43 % $ 105,553 6.00 % $ 127,543 7.25 % N/A N/A First Business Bank 185,954 10.62 105,099 6.00 126,994 7.25 $ 140,132 8.00 % Common equity tier 1 capital (to risk-weighted assets) Consolidated $ 155,858 8.86 % $ 79,164 4.50 % $ 101,155 5.75 % N/A N/A First Business Bank 185,954 10.62 78,824 4.50 100,720 5.75 $ 113,857 6.50 % Tier 1 leverage capital (to adjusted assets) Consolidated $ 165,873 9.39 % $ 70,654 4.00 % $ 70,654 4.00 % N/A N/A First Business Bank 185,954 10.56 70,409 4.00 70,409 4.00 $ 88,011 5.00 % The following table summarizes both the Corporation’s and the Corporation’s legacy bank charters’ ratios and the ratios required by their federal regulators at December 31, 2016: Actual Minimum Required for Capital Adequacy Purposes For Capital Adequacy Purposes Plus Capital Conservation Buffer Minimum Required to Be Well Amount Ratio Amount Ratio Amount Ratio Amount Ratio (Dollars in Thousands) As of December 31, 2016 Total capital (to risk-weighted assets) Consolidated $ 204,117 11.74 % $ 139,101 8.00 % $ 149,968 8.625 % N/A N/A First Business Bank 147,811 11.55 102,362 8.00 110,360 8.625 $ 127,953 10.00 % First Business Bank — Milwaukee 24,347 11.02 17,680 8.00 19,062 8.625 22,101 10.00 Alterra Bank 31,699 13.27 19,106 8.00 20,599 8.625 23,882 10.00 Tier 1 capital (to risk-weighted assets) Consolidated $ 160,964 9.26 % $ 104,326 6.00 % $ 115,193 6.625 % N/A N/A First Business Bank 134,208 10.49 76,772 6.00 84,769 6.625 $ 102,362 8.00 % First Business Bank — Milwaukee 22,323 10.10 13,260 6.00 14,642 6.625 17,680 8.00 Alterra Bank 28,685 12.01 14,329 6.00 15,822 6.625 19,106 8.00 Common equity tier 1 capital (to risk-weighted assets) Consolidated $ 150,960 8.68 % $ 78,244 4.50 % $ 89,111 5.125 % N/A N/A First Business Bank 134,208 10.49 57,579 4.50 65,576 5.125 $ 83,170 6.50 % First Business Bank — Milwaukee 22,323 10.10 9,945 4.50 11,327 5.125 14,365 6.50 Alterra Bank 28,685 12.01 10,747 4.50 12,240 5.125 15,524 6.50 Tier 1 leverage capital (to adjusted assets) Consolidated $ 160,964 9.07 % $ 70,985 4.00 % $ 70,985 4.00 % N/A N/A First Business Bank 134,208 10.40 51,600 4.00 51,600 4.00 $ 64,500 5.00 % First Business Bank — Milwaukee 22,323 9.15 9,758 4.00 9,758 4.00 12,198 5.00 Alterra Bank 28,685 10.58 10,842 4.00 10,842 4.00 13,552 5.00

Nature of Operations and Summ21

Nature of Operations and Summary of Significant Accounting Policies Nature of Operations and Summary of Significant Accounting Policies (Policies)	9 Months Ended
	Sep. 30, 2017
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Basis of Presentation	Basis of Presentation. The accompanying unaudited Consolidated Financial Statements were prepared in accordance with GAAP and the instructions to Form 10-Q and Rule 10-01 of Regulation S-X. Accordingly, they do not include all of the information and footnotes required by GAAP for complete financial statements and should be read in conjunction with the Corporation’s Consolidated Financial Statements and footnotes thereto included in the Corporation’s Annual Report on Form 10-K for the year ended December 31, 2016 .
Principles of Consolidation	The unaudited Consolidated Financial Statements include the accounts of the Corporation and its wholly owned subsidiaries. All significant intercompany balances and transactions have been eliminated in consolidation. In accordance with the provisions of Accounting Standards Codification (“ASC”) Topic 810, the Corporation’s ownership interest in FBFS Statutory Trust II (“Trust II”) has not been consolidated into the financial statements.
Use of Estimates	Management of the Corporation is required to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements as well as reported amounts of revenues and expenses during the reporting period. Actual results could differ significantly from those estimates. Material estimates that could significantly change in the near-term include the value of securities, level of the allowance for loan and lease losses, lease residuals, property under operating leases, goodwill, level of the Small Business Administration (“SBA”) recourse reserve and income taxes.
Reclassification	Certain amounts in prior periods may have been reclassified to conform to the current presentation
Subsequent Events	Subsequent events have been evaluated through the date of the issuance of the unaudited Consolidated Financial Statements. No significant subsequent events have occurred through this date requiring adjustment to the financial statements or disclosures. T
Recent Accounting Pronouncements	Recent Accounting Pronouncements In May 2014, the Financial Accounting Standards Board (“FASB”) issued ASU No. 2014-09, “Revenue from Contracts with Customers (Topic 606),” with an original effective date for annual reporting periods beginning after December 15, 2016. The ASU is a converged standard between the FASB and the IASB that provides a single comprehensive revenue recognition model for all contracts with customers across transactions and industries. The primary objective of the ASU is revenue recognition that represents the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled to in exchange for those goods or services. In August 2015, the FASB issued ASU No. 2015-14, which defers the effective date of ASU 2014-09 to annual and interim reporting periods in fiscal years beginning after December 15, 2017. Earlier application is permitted only as of annual and interim reporting periods in fiscal years beginning after December 15, 2016. In March 2016, the FASB issued ASU No. 2016-08, “ Revenue from Contracts with Customers (Topic 606): Principal versus Agent Considerations (Reporting Revenue Gross versus Net.” The ASU intends to improve the operability and understandability of the implementation guidance of ASU 2014-09 on principal versus agent considerations. In April, May and December 2016, the FASB also issued ASU No. 2016-10, No. 2016-12 and No. 2016-20, respectively, related to Topic 606. The amendments do not change the core principles of the previously issued guidance, but instead further clarify and provide implementation guidance for certain aspects of the original ASU. The Corporation intends to adopt the accounting standards during the first quarter of 2018, as required. The Corporation has conducted its initial assessment and evaluated contracts to assess and quantify accounting methodology changes resulting from the adoption of this standard. The adoption of this accounting standard is not expected to have a material impact on the Corporation's consolidated financial statements. The FASB continues to release new accounting guidance related to the adoption of this standard, which could impact the Corporation's initial assessment and may change the conclusions reached as to the application of this new guidance. In February 2016, the FASB issued ASU No. 2016-02, “Leases (Topic 842).” The ASU intends to increase transparency and comparability among organizations by recognizing lease assets and lease liabilities and disclosing key information about leasing arrangements. The ASU will require lessees to recognize the following for all leases (with the exception of short-term leases) at the commencement date: (1) a lease liability, which is a lessees’ obligation to make lease payments arising from a lease, measured on a discounted basis; and (2) a right-of-use asset, which is an asset that represents the lessee’s right to use, or control the use of, a specified asset for the lease term. Under the new guidance, lessor accounting is largely unchanged. Certain targeted improvements were made to align, where necessary, lessor accounting with the lessee accounting model and Topic 606, Revenue from Contracts with Customers . The new lease guidance simplifies the accounting for sale and leaseback transactions primarily because lessees must recognize lease assets and lease liabilities. Lessees (for capital and operating leases) and lessors (for sales-type, direct financing, and operating leases) must apply a modified retrospective transition approach for leases existing at, or entered into after, the beginning of the earliest comparative period presented in the financial statements. The modified retrospective approach would not require any transition accounting for leases that expired before the earliest comparative period presented. The ASU is effective for public companies for fiscal years beginning after December 15, 2018, including interim periods within those fiscal years, with early adoption permitted. The Corporation intends to adopt the accounting standard during the first quarter of 2019, as required, and is currently evaluating the impact on its results of operations, financial position and liquidity. In June 2016, the FASB issued ASU No. 2016-13, “Financial Instruments- Credit Losses (Topic 326).” The ASU replaces the incurred loss impairment methodology for recognizing credit losses with a methodology that reflects all expected credit losses. The ASU also requires consideration of a broader range of information to inform credit loss estimates, including such factors as past events, current conditions, and reasonable and supportable forecasts that affect the collectability of the reported amount. The amendments affect loans, debt securities, trade receivables, net investments in leases, off-balance-sheet credit exposures, and any other financial asset not excluded from the scope that have the contractual right to receive cash. Entities will apply the amendments in the ASU through a cumulative-effect adjustment to retained earnings as of the beginning of the first reporting period in which the guidance is effective. The ASU is effective for public companies for fiscal years beginning after December 15, 2019, including interim periods within those fiscal years. Early adoption is permitted as of the fiscal years beginning after December 15, 2018. The Corporation intends to adopt the accounting standard during the first quarter of 2020, as required, and is currently evaluating the impact on its results of operations, financial position and liquidity. In May 2017, the FASB issued ASU No. 2017-09, “Compensation- Stock Compensation (Topic 718).” The ASU provides clarity about which changes to the terms or conditions of a share-based payment award require an entity to apply modification accounting. The ASU is effective for all entities for fiscal years beginning after December 15, 2017, including interim periods within those fiscal years. Early adoption is permitted. The Corporation is in the process of evaluating the impact of this standard but does not expect this standard to have a material impact on its results of operations, financial position and liquidity. In August 2017, the FASB issued ASU No. 2017-12, “Derivatives and Hedging (Topic 815).” The ASU intends to better align an entity’s risk management activities and financial reporting for hedging relationships through changes to both the designation and measurement guidance for qualifying hedging relationships and the presentation of hedge results. It also expands and refines hedge accounting for both nonfinancial and financial risk components and aligns the recognition and presentation of the effects of the hedging instrument and the hedged item. The ASU is effective for public companies for fiscal years beginning after December 15, 2018, including interim periods within those fiscal years. Early adoption is permitted. The Corporation is in the process of evaluating the impact of this standard but does not expect this standard to have a material impact on its results of operations, financial position and liquidity.

Earnings Per Common Share (Poli

Earnings Per Common Share (Policies)	9 Months Ended
	Sep. 30, 2017
Earnings Per Share [Abstract]
Earnings Per Share	Earnings per common share are computed using the two-class method. Basic earnings per common share are computed by dividing net income allocated to common shares by the weighted average number of shares outstanding during the applicable period, excluding outstanding participating securities. Participating securities include unvested restricted shares. Unvested restricted shares are considered participating securities because holders of these securities receive non-forfeitable dividends, or dividend equivalents, at the same rate as holders of the Corporation’s common stock. Diluted earnings per share are computed by dividing net income allocated to common shares, adjusted for reallocation of undistributed earnings of unvested restricted shares, by the weighted average number of shares determined for the basic earnings per common share computation plus the dilutive effect of common stock equivalents using the treasury stock method.

Share-Based Compensation (Polic

Share-Based Compensation (Policies)	9 Months Ended
	Sep. 30, 2017
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Share-based Compensation, Option and Incentive Plans	The Corporation adopted the 2012 Equity Incentive Plan (the “Plan”) during the quarter ended June 30, 2012. The Plan is administered by the Compensation Committee of the Board of Directors of the Corporation and provides for the grant of equity ownership opportunities through incentive stock options and nonqualified stock options, restricted stock, restricted stock units, dividend equivalent units and any other type of award permitted by the Plan. As of September 30, 2017 , 217,475 shares were available for future grants under the Plan. Shares covered by awards that expire, terminate or lapse will again be available for the grant of awards under the Plan. The Corporation may issue new shares and shares from its treasury stock for shares delivered under the Plan. Restricted Stock Under the Plan, the Corporation may grant restricted stock to plan participants, subject to forfeiture upon the occurrence of certain events until the dates specified in the participant’s award agreement. While restricted stock is subject to forfeiture, with the exception of restricted stock units, which do not have voting rights and are provided dividend equivalents, restricted stock participants may exercise full voting rights and will receive all dividends and other distributions paid with respect to the restricted shares. The restricted stock granted under the Plan is typically subject to a vesting period. Compensation expense is recognized over the requisite service period of generally four years for the entire award on a straight-line basis. Upon vesting of restricted stock, the benefit of tax deductions in excess of recognized compensation expense is reflected as an income tax benefit in the unaudited Consolidated Statements of Income.

Loan and Lease Receivables, I24

Loan and Lease Receivables, Impaired Loans and Leases and Allowance for Loan and Lease Losses (Policies)	9 Months Ended
	Sep. 30, 2017
Receivables [Abstract]
Loans and Leases Receivable, Allowance for Loan Losses	To determine the level and composition of the allowance for loan and lease losses, the Corporation categorizes the portfolio into segments with similar risk characteristics. First, the Corporation evaluates loans and leases for potential impairment classification. The Corporation analyzes each loan and lease determined to be impaired on an individual basis to determine a specific reserve based upon the estimated value of the underlying collateral for collateral-dependent loans, or alternatively, the present value of expected cash flows. The Corporation applies historical trends from established risk factors to each category of loans and leases that has not been individually evaluated for the purpose of establishing the general portion of the allowance.

Fair Value Disclosures (Policie

Fair Value Disclosures (Policies)	9 Months Ended
	Sep. 30, 2017
Fair Value Disclosures [Abstract]
Fair Value of Financial Instruments	The Corporation determines the fair values of its financial instruments based on the fair value hierarchy established in ASC Topic 820, which requires an entity to maximize the use of observable inputs and minimize the use of unobservable inputs when measuring fair value. Fair value is defined as the price that would be received in an orderly transaction that is not a forced liquidation or distressed sale at the measurement date and is based on exit prices. Fair value includes assumptions about risk, such as nonperformance risk in liability fair values, and is a market-based measurement, not an entity-specific measurement. The standard describes three levels of inputs that may be used to measure fair value. Level 1 — Level 1 inputs are unadjusted quoted prices in active markets for identical assets or liabilities that the Corporation has the ability to access at the measurement date. Level 2 — Level 2 inputs are inputs, other than quoted prices included with Level 1, that are observable for the asset or liability either directly or indirectly, such as quoted prices for similar assets or liabilities; quoted prices in markets that are not active; or other inputs that are observable or can be corroborated by observable market data for substantially the full term of the assets or liabilities. Level 3 — Level 3 inputs are supported by little or no market activity and are significant to the fair value of the assets or liabilities. In instances where the determination of the fair value measurement is based on inputs from different levels of the fair value hierarchy, the level in the fair value hierarchy within which the entire fair value measurement falls is based on the lowest level input that is significant to the fair value measurement in its entirety. The Corporation’s assessment of the significance of a particular input to the fair value measurement in its entirety requires judgment and considers factors specific to the asset or liability. Impaired loans were written down to the fair value of their underlying collateral less costs to sell of $16.3 million and $13.4 million at September 30, 2017 and December 31, 2016 , respectively, through the establishment of specific reserves or by recording charge-offs when the carrying value exceeded the fair value of the underlying collateral of impaired loans. Valuation techniques consistent with the market approach, income approach or cost approach were used to measure fair value and primarily included observable inputs for the individual impaired loans being evaluated such as current appraisals, recent sales of similar assets or other observable market data, and are reflected within Level 2 of the hierarchy. In cases where an input is unobservable, specifically when discounts are applied to appraisal values to adjust such values to current market conditions or to reflect net realizable value, the impaired loan balance is reflected within Level 3 of the hierarchy. The quantification of unobservable inputs for Level 3 impaired loan values range from 13% - 90% as of the measurement date of September 30, 2017 . The weighted average of those unobservable inputs was 20% . The majority of the impaired loans in the Level 3 category are considered collateral dependent loans or are supported by a SBA guaranty. Foreclosed properties, upon initial recognition, are remeasured and reported at fair value through a charge-off to the allowance for loan and lease losses, if deemed necessary, based upon the fair value of the foreclosed property. The fair value of a foreclosed property, upon initial recognition, is estimated using a market approach or Level 2 inputs based on observable market data, typically a current appraisal, or Level 3 inputs based upon assumptions specific to the individual property or equipment. Level 3 inputs typically include unobservable inputs such as management applied discounts used to further reduce values to a net realizable value and may be used in situations when observable inputs become stale. Foreclosed property fair value inputs may transition to Level 1 upon receipt of an accepted offer for the sale of the related foreclosed property.
Fair Value Measurement	Disclosure of fair value information about financial instruments, for which it is practicable to estimate that value, is required whether or not recognized in the unaudited Consolidated Balance Sheets. 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. In that regard, the derived fair value estimates cannot be substantiated by comparison to independent markets and, in many cases, could not be realized in immediate settlement of the instruments. Certain financial instruments and all non-financial instruments are excluded from the disclosure requirements. Accordingly, the aggregate fair value amounts presented do not necessarily represent the underlying value of the Corporation. Cash and Cash Equivalents: The carrying amount reported for cash and due from banks and interest-bearing deposits held by the Corporation approximates fair value because of its immediate availability and because it does not present unanticipated credit concerns. As of September 30, 2017 and December 31, 2016 , the Corporation held $13.4 million and $20.3 million , respectively, of commercial paper. The fair value of commercial paper is classified as a Level 2 input due to the lack of available independent pricing sources. The carrying value of brokered certificates of deposit purchased approximates the fair value for these instruments. The fair value of brokered certificates of deposits purchased is based on the discounted value of contractual cash flows using a discount rate reflective of rates currently offered for deposits of similar remaining maturities. As of both September 30, 2017 and December 31, 2016 , the Corporation held $3.3 million and $1.6 million of brokered certificates of deposits, respectively. Securities: The fair value measurements of investment securities are determined by a third-party pricing service which considers observable data that may include dealer quotes, market spreads, cash flows, the U.S. Treasury yield curve, trade execution data, market consensus prepayment speeds, credit information and the securities’ terms and conditions, among other things. The fair value measurements are subject to independent verification by another pricing source on a quarterly basis to review for reasonableness. Any significant differences in pricing are reviewed with appropriate members of management who have the relevant technical expertise to assess the results. The Corporation has determined that these valuations are classified in Level 2 of the fair value hierarchy. When the independent pricing service does not provide a fair value measurement for a particular security, the Corporation will estimate the fair value based on specific information about each security. Fair values derived in this manner are classified in Level 3 of the fair value hierarchy. Loans Held for Sale: Loans held for sale, which consist of the guaranteed portion of SBA loans, are carried at the lower of cost or estimated fair value. The estimated fair value is based on what secondary markets are currently offering for portfolios with similar characteristics. Loans and Lease Receivables, net: The fair value estimation process for the loan portfolio uses an exit price concept and reflects discounts that the Corporation believes are consistent with liquidity discounts in the market place. Fair values are estimated for portfolios of loans with similar financial characteristics. The fair value of performing and nonperforming loans is calculated by discounting scheduled and expected cash flows through the estimated maturity using estimated market rates that reflect the credit and interest rate risk inherent in the portfolio of loans and then applying a discount factor based upon the embedded credit risk of the loan and the fair value of collateral securing nonperforming loans when the loan is collateral dependent. The estimate of maturity is based on the Bank’s historical experience with repayments for each loan classification, modified, as required, by an estimate of the effect of current economic and lending conditions. Significant unobservable inputs include, but are not limited to, discounts (investor yield premiums) applied to fair value calculations to further determine the exit price value of a portfolio of loans. Federal Home Loan Bank and Federal Reserve Bank Stock: The carrying amount of FHLB and Federal Reserve Bank (“FRB”) stock equals its fair value because the shares may be redeemed by the FHLB and the FRB at their carrying amount of $100 per share. Bank-Owned Life Insurance: The carrying amount of the cash surrender value of life insurance approximates its fair value as the carrying value represents the current settlement amount. Accrued Interest Receivable and Accrued Interest Payable: The carrying amounts reported for accrued interest receivable and accrued interest payable approximate fair value because of their immediate availability and because they do not present unanticipated credit concerns. Deposits: The fair value of deposits with no stated maturity, such as demand deposits and money market accounts, is equal to the amount payable on demand. The fair value of time deposits is based on the discounted value of contractual cash flows. The discount rate is estimated using the rates currently offered for deposits of similar remaining maturities. The fair value estimates do not include the intangible value that results from the funding provided by deposit liabilities compared to borrowing funds in the market. Borrowed Funds: Market rates currently available to the Corporation and Bank for debt with similar terms and remaining maturities are used to estimate fair value of existing debt. Interest Rate Swaps: The carrying amount and fair value of existing derivative financial instruments are based upon independent valuation models, which use widely accepted valuation techniques, including discounted cash flow analysis on the expected cash flows of each derivative contract. This analysis reflects the contractual terms of the derivatives, including the period to maturity, and uses observable market-based inputs, including interest rate curves and implied volatilities. The Corporation incorporates credit valuation adjustments to appropriately reflect both its own nonperformance risk and the respective counterparty’s nonperformance risk in the fair value measurements. In adjusting the fair value of its derivative contracts for the effect of nonperformance risk, the Corporation considers the impact of netting and any applicable credit enhancements, such as collateral postings, thresholds, mutual puts and guarantees. Financial Instruments with Off-Balance-Sheet Risks: The fair value of the Corporation’s off-balance-sheet instruments is based on quoted market prices and fees currently charged to enter into similar agreements, taking into account the remaining terms of the agreements and the credit standing of the related counterparty. Commitments to extend credit and standby letters of credit are generally not marketable. Furthermore, interest rates on any amounts drawn under such commitments would generally be established at market rates at the time of the draw. Fair value would principally derive from the present value of fees received for those products. Limitations: Fair value estimates are made at a discrete point in time, based on relevant market information and information about the financial instrument. These estimates do not reflect any premium or discount that could result from offering for sale at one time the Corporation’s entire holding of a particular financial instrument. Because no market exists for a significant portion of the Corporation’s financial instruments, fair value estimates are based on judgments regarding future expected loss experience, current economic conditions, risk characteristics of various financial instruments and other factors. These estimates are subjective in nature and involve uncertainties and matters of significant judgment and, therefore, cannot be determined with precision. Changes in assumptions could significantly affect the estimates. Fair value estimates are based on existing balance sheet financial instruments without attempting to estimate the value of anticipated future business and the value of assets and liabilities that are not considered financial instruments. In addition, the tax ramifications related to the realization of the unrealized gains and losses can have a significant effect on fair value estimates and are not considered in the estimates.

Derivative Financial Instrume26

Derivative Financial Instruments (Policies)	9 Months Ended
	Sep. 30, 2017
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivatives	The Corporation offers interest rate swap products directly to qualified commercial borrowers. The Corporation economically hedges client derivative transactions by entering into offsetting interest rate swap contracts executed with a third party. Derivative transactions executed as part of this program are not designated as accounting hedge relationships and are marked- to-market through earnings each period. The derivative contracts have mirror-image terms, which results in the positions’ changes in fair value primarily offsetting through earnings each period. The credit risk and risk of non-performance embedded in the fair value calculations is different between the dealer counterparties and the commercial borrowers which may result in a difference in the changes in the fair value of the mirror-image swaps. The Corporation incorporates credit valuation adjustments to appropriately reflect both its own non-performance risk and the counterparty’s risk in the fair value measurements. When evaluating the fair value of its derivative contracts for the effects of non-performance and credit risk, the Corporation considered the impact of netting and any applicable credit enhancements such as collateral postings, thresholds and guarantees.

Earnings Per Common Share (Tabl

Earnings Per Common Share (Tables)	9 Months Ended
	Sep. 30, 2017
Earnings Per Share [Abstract]
Schedule of Earnings Per Share, Basic and Diluted	For the Three Months Ended September 30, For the Nine Months Ended September 30, 2017 2016 2017 2016 (Dollars in Thousands, Except Share Data) Basic earnings per common share Net income $ 2,584 $ 2,665 $ 7,867 $ 10,941 Less: earnings allocated to participating securities 35 38 105 165 Basic earnings allocated to common shareholders $ 2,549 $ 2,627 $ 7,762 $ 10,776 Weighted-average common shares outstanding, excluding participating securities 8,621,311 8,582,836 8,606,080 8,569,613 Basic earnings per common share $ 0.30 $ 0.31 $ 0.90 $ 1.26 Diluted earnings per common share Earnings allocated to common shareholders, diluted $ 2,549 $ 2,627 $ 7,762 $ 10,776 Weighted-average diluted common shares outstanding, excluding participating securities 8,621,311 8,582,836 8,606,080 8,569,613 Diluted earnings per common share $ 0.30 $ 0.31 $ 0.90 $ 1.26

Share-Based Compensation (Table

Share-Based Compensation (Tables)	9 Months Ended
	Sep. 30, 2017
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Schedule of Share-based Compensation, Restricted Stock and Restricted Stock Units Activity	Restricted stock activity for the year ended December 31, 2016 and the nine months ended September 30, 2017 was as follows: Number of Restricted Shares/Units Weighted Average Grant-Date Fair Value Nonvested balance as of December 31, 2015 135,471 $ 20.13 Granted 60,415 22.74 Vested (56,090 ) 18.71 Forfeited (23,551 ) 20.90 Nonvested balance as of December 31, 2016 116,245 21.13 Granted 64,725 21.62 Vested (45,695 ) 21.49 Forfeited (7,619 ) 21.57 Nonvested balance as of September 30, 2017 127,656 $ 21.39
Schedule of Share-based Compensation Expense	For the three and nine months ended September 30, 2017 and 2016 , share-based compensation expense related to restricted stock included in the unaudited Consolidated Statements of Income was as follows: For the Three Months Ended September 30, For the Nine Months Ended September 30, 2017 2016 2017 2016 (In Thousands) Share-based compensation expense $ 268 $ 292 $ 811 $ 858

Securities (Tables)

Securities (Tables)	9 Months Ended
	Sep. 30, 2017
Investments, Debt and Equity Securities [Abstract]
Schedule of Available-for-sale Securities	The amortized cost and fair value of securities available-for-sale and the corresponding amounts of gross unrealized gains and losses recognized in accumulated other comprehensive income were as follows: As of September 30, 2017 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value (In Thousands) Available-for-sale: U.S. Government agency obligations - government-sponsored enterprises $ 3,799 $ 11 $ (3 ) $ 3,807 Municipal obligations 9,342 13 (23 ) 9,332 Collateralized mortgage obligations - government issued 22,750 301 (149 ) 22,902 Collateralized mortgage obligations - government-sponsored enterprises 95,608 165 (684 ) 95,089 $ 131,499 $ 490 $ (859 ) $ 131,130 As of December 31, 2016 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value (In Thousands) Available-for-sale: U.S. Government agency obligations - government-sponsored enterprises $ 6,298 $ 7 $ (10 ) $ 6,295 Municipal obligations 8,246 2 (92 ) 8,156 Asset-backed securities 1,116 — (35 ) 1,081 Collateralized mortgage obligations - government issued 30,936 423 (146 ) 31,213 Collateralized mortgage obligations - government-sponsored enterprises 99,865 252 (969 ) 99,148 $ 146,461 $ 684 $ (1,252 ) $ 145,893
Schedule of Held-to-maturity Securities	The amortized cost and fair value of securities held-to-maturity and the corresponding amounts of gross unrealized gains and losses were as follows: As of September 30, 2017 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value (In Thousands) Held-to-maturity: U.S. Government agency obligations - government-sponsored enterprises $ 1,498 $ — $ (5 ) $ 1,493 Municipal obligations 21,928 443 (14 ) 22,357 Collateralized mortgage obligations - government issued 9,601 16 (33 ) 9,584 Collateralized mortgage obligations - government-sponsored enterprises 5,846 12 (18 ) 5,840 $ 38,873 $ 471 $ (70 ) $ 39,274 As of December 31, 2016 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value (In Thousands) Held-to-maturity: U.S. Government agency obligations - government-sponsored enterprises $ 1,497 $ 2 $ (5 ) $ 1,494 Municipal obligations 21,173 62 (78 ) 21,157 Collateralized mortgage obligations - government issued 9,148 17 (38 ) 9,127 Collateralized mortgage obligations - government-sponsored enterprises 6,794 6 (58 ) 6,742 $ 38,612 $ 87 $ (179 ) $ 38,520
Investments Classified by Contractual Maturity	The amortized cost and fair value of securities by contractual maturity at September 30, 2017 are shown below. Actual maturities may differ from contractual maturities because issuers have the right to call or prepay certain obligations with or without call or prepayment penalties. Available-for-Sale Held-to-Maturity Amortized Cost Fair Value Amortized Cost Fair Value (In Thousands) Due in one year or less $ 6,785 $ 6,783 $ — $ — Due in one year through five years 13,156 13,194 11,177 11,326 Due in five through ten years 48,051 48,168 13,258 13,495 Due in over ten years 63,507 62,985 14,438 14,453 $ 131,499 $ 131,130 $ 38,873 $ 39,274
Schedule of Unrealized Loss on Investments	A summary of unrealized loss information for securities available-for-sale, categorized by security type and length of time for which the security has been in a continuous unrealized loss position, follows: As of September 30, 2017 Less than 12 Months 12 Months or Longer Total Fair Value Unrealized Losses Fair Value Unrealized Losses Fair Value Unrealized Losses (In Thousands) Available-for-sale: U.S. Government agency obligations - government-sponsored enterprises $ 800 $ — $ 1,997 $ 3 $ 2,797 $ 3 Municipal obligations 1,916 9 3,011 14 4,927 23 Collateralized mortgage obligations - government issued 3,679 14 6,185 135 9,864 149 Collateralized mortgage obligations - government-sponsored enterprises 32,752 121 31,883 563 64,635 684 $ 39,147 $ 144 $ 43,076 $ 715 $ 82,223 $ 859 As of December 31, 2016 Less than 12 Months 12 Months or Longer Total Fair Value Unrealized Losses Fair Value Unrealized Losses Fair Value Unrealized Losses (In Thousands) Available-for-sale: U.S. Government agency obligations - government-sponsored enterprises $ 1,991 $ 10 $ — $ — $ 1,991 $ 10 Municipal obligations 7,207 89 406 3 7,613 92 Asset-backed securities — $ — 1,081 35 1,081 35 Collateralized mortgage obligations - government issued 10,552 130 493 16 11,045 146 Collateralized mortgage obligations - government-sponsored enterprises 54,843 931 1,819 38 56,662 969 $ 74,593 $ 1,160 $ 3,799 $ 92 $ 78,392 $ 1,252 A summary of unrealized loss information for securities held-to-maturity, categorized by security type and length of time for which the security has been in a continuous unrealized loss position, follows: As of September 30, 2017 Less than 12 Months 12 Months or Longer Total Fair Value Unrealized Losses Fair Value Unrealized Losses Fair Value Unrealized Losses (In Thousands) Held-to-maturity: U.S. Government agency obligations - government-sponsored enterprises $ 1,000 $ 5 $ — $ — $ 1,000 $ 5 Municipal obligations 853 11 260 3 1,113 14 Collateralized mortgage obligations - government issued 2,806 8 3,804 25 6,610 33 Collateralized mortgage obligations - government-sponsored enterprises — — 1,927 18 1,927 18 $ 4,659 $ 24 $ 5,991 $ 46 $ 10,650 $ 70 As of December 31, 2016 Less than 12 Months 12 Months or Longer Total Fair Value Unrealized Losses Fair Value Unrealized Losses Fair Value Unrealized Losses (In Thousands) Held-to-maturity: U.S. Government agency obligations - government-sponsored enterprises $ 1,000 $ 5 $ — $ — $ 1,000 $ 5 Municipal obligations 9,472 78 — — 9,472 78 Collateralized mortgage obligations - government issued 6,980 38 — — 6,980 38 Collateralized mortgage obligations - government-sponsored enterprises 4,682 58 — — 4,682 58 $ 22,134 $ 179 $ — $ — $ 22,134 $ 179

Loan and Lease Receivables, I30

Loan and Lease Receivables, Impaired Loans and Leases and Allowance for Loan and Lease Losses (Tables)	9 Months Ended
	Sep. 30, 2017
Receivables [Abstract]
Loan Composition Schedule	Loan and lease receivables consist of the following: September 30, December 31, (In Thousands) Commercial real estate: Commercial real estate — owner occupied $ 182,755 $ 176,459 Commercial real estate — non-owner occupied 461,586 473,158 Land development 41,499 56,638 Construction 115,660 101,206 Multi-family 125,080 92,762 1-4 family 40,173 45,651 Total commercial real estate 966,753 945,874 Commercial and industrial 447,223 450,298 Direct financing leases, net 28,868 30,951 Consumer and other: Home equity and second mortgages 7,776 8,412 Other 17,447 16,329 Total consumer and other 25,223 24,741 Total gross loans and leases receivable 1,468,067 1,451,864 Less: Allowance for loan and lease losses 19,923 20,912 Deferred loan fees 1,354 1,189 Loans and leases receivable, net $ 1,446,790 $ 1,429,763
Ownership of SBA Loans	As of September 30, 2017 and December 31, 2016 , the total amount of the Corporation’s ownership of SBA loans on the unaudited Consolidated Balance Sheets comprised of the following: September 30, December 31, (In Thousands) Retained, unguaranteed portion of sold SBA loans $ 30,632 $ 30,418 Other SBA loans (1) 25,684 31,728 Total SBA loans $ 56,316 $ 62,146 (1) Primarily consisted of SBA Express loans, partially funded 7(a) program loans, and impaired SBA loans that were repurchased from the secondary market, all of which were not saleable as of September 30, 2017 and December 31, 2016, respectively.
Financing Receivable by Credit Quality Indicators	The following tables illustrate ending balances of the Corporation’s loan and lease portfolio, including impaired loans by class of receivable, and considering certain credit quality indicators as of September 30, 2017 and December 31, 2016 : September 30, 2017 Category I II III IV Total (Dollars in Thousands) Commercial real estate: Commercial real estate — owner occupied $ 147,603 $ 19,324 $ 8,690 $ 7,138 $ 182,755 Commercial real estate — non-owner occupied 438,874 19,769 1,117 1,826 461,586 Land development 37,659 795 275 2,770 41,499 Construction 109,102 773 431 5,354 115,660 Multi-family 125,080 — — — 125,080 1-4 family 29,051 7,824 1,233 2,065 40,173 Total commercial real estate 887,369 48,485 11,746 19,153 966,753 Commercial and industrial 348,179 26,605 58,470 13,969 447,223 Direct financing leases, net 26,854 305 1,709 — 28,868 Consumer and other: Home equity and second mortgages 7,764 — 8 4 7,776 Other 17,066 — — 381 17,447 Total consumer and other 24,830 — 8 385 25,223 Total gross loans and leases receivable $ 1,287,232 $ 75,395 $ 71,933 $ 33,507 $ 1,468,067 Category as a % of total portfolio 87.68 % 5.14 % 4.90 % 2.28 % 100.00 % December 31, 2016 Category I II III IV Total (Dollars in Thousands) Commercial real estate: Commercial real estate — owner occupied $ 142,704 $ 20,294 $ 11,174 $ 2,287 $ 176,459 Commercial real estate — non-owner occupied 447,895 20,933 2,721 1,609 473,158 Land development 52,082 823 293 3,440 56,638 Construction 93,510 3,154 1,624 2,918 101,206 Multi-family 87,418 1,937 3,407 — 92,762 1-4 family 38,504 3,144 1,431 2,572 45,651 Total commercial real estate 862,113 50,285 20,650 12,826 945,874 Commercial and industrial 348,201 42,949 46,675 12,473 450,298 Direct financing leases, net 29,351 1,600 — — 30,951 Consumer and other: Home equity and second mortgages 8,271 121 12 8 8,412 Other 15,714 — 11 604 16,329 Total consumer and other 23,985 121 23 612 24,741 Total gross loans and leases receivable $ 1,263,650 $ 94,955 $ 67,348 $ 25,911 $ 1,451,864 Category as a % of total portfolio 87.04 % 6.54 % 4.64 % 1.78 % 100.00 %
Past Due Financing Receivables	The delinquency aging of the loan and lease portfolio by class of receivable as of September 30, 2017 and December 31, 2016 was as follows: September 30, 2017 30-59 60-89 Greater Total Past Due Current Total Loans and Leases (Dollars in Thousands) Accruing loans and leases Commercial real estate: Owner occupied $ — $ — $ — $ — $ 175,675 $ 175,675 Non-owner occupied — — — — 459,760 459,760 Land development — — — — 38,729 38,729 Construction 392 — — 392 109,914 110,306 Multi-family — — — — 125,080 125,080 1-4 family — — — — 38,309 38,309 Commercial and industrial 2,257 470 — 2,727 430,539 433,266 Direct financing leases, net — — — — 28,868 28,868 Consumer and other: Home equity and second mortgages 229 — — 229 7,547 7,776 Other — — — — 17,066 17,066 Total 2,878 470 — 3,348 1,431,487 1,434,835 Non-accruing loans and leases Commercial real estate: Owner occupied — — 4,825 4,825 2,255 7,080 Non-owner occupied — — 1,791 1,791 35 1,826 Land development — — — — 2,770 2,770 Construction — — 5,353 5,353 1 5,354 Multi-family — — — — — — 1-4 family 529 10 1,041 1,580 284 1,864 Commercial and industrial 207 497 11,005 11,709 2,248 13,957 Direct financing leases, net — — — — — — Consumer and other: Home equity and second mortgages — — — — — — Other — — 358 358 23 381 Total 736 507 24,373 25,616 7,616 — 33,232 Total loans and leases Commercial real estate: Owner occupied — — 4,825 4,825 177,930 182,755 Non-owner occupied — — 1,791 1,791 459,795 461,586 Land development — — — — 41,499 41,499 Construction 392 — 5,353 5,745 109,915 115,660 Multi-family — — — — 125,080 125,080 1-4 family 529 10 1,041 1,580 38,593 40,173 Commercial and industrial 2,464 967 11,005 14,436 432,787 447,223 Direct financing leases, net — — — — 28,868 28,868 Consumer and other: Home equity and second mortgages 229 — — 229 7,547 7,776 Other — — 358 358 17,089 17,447 Total $ 3,614 $ 977 $ 24,373 $ 28,964 $ 1,439,103 $ 1,468,067 Percent of portfolio 0.24 % 0.07 % 1.66 % 1.97 % 98.03 % 100.00 % December 31, 2016 30-59 60-89 Greater Total Past Due Current Total Loans and Leases (Dollars in Thousands) Accruing loans and leases Commercial real estate: Owner occupied $ — $ — $ — $ — $ 174,236 $ 174,236 Non-owner occupied — — — — 471,549 471,549 Land development — — — — 53,198 53,198 Construction — — — — 98,288 98,288 Multi-family — — — — 92,762 92,762 1-4 family 75 — — 75 43,639 43,714 Commercial and industrial 55 468 — 523 437,312 437,835 Direct financing leases, net — — — — 30,951 30,951 Consumer and other: Home equity and second mortgages — — — — 8,412 8,412 Other — — — — 15,725 15,725 Total 130 468 — 598 1,426,072 1,426,670 Non-accruing loans and leases Commercial real estate: Owner occupied — — 1,183 1,183 1,040 2,223 Non-owner occupied — — — — 1,609 1,609 Land development — — — — 3,440 3,440 Construction 2,482 — 436 2,918 — 2,918 Multi-family — — — — — — 1-4 family — — 1,240 1,240 697 1,937 Commercial and industrial 3,345 168 6,740 10,253 2,210 12,463 Direct financing leases, net — — — — — — Consumer and other: Home equity and second mortgages — — — — — — Other 186 — 378 564 40 604 Total 6,013 168 9,977 16,158 9,036 25,194 Total loans and leases Commercial real estate: Owner occupied — — 1,183 1,183 175,276 176,459 Non-owner occupied — — — — 473,158 473,158 Land development — — — — 56,638 56,638 Construction 2,482 — 436 2,918 98,288 101,206 Multi-family — — — — 92,762 92,762 1-4 family 75 — 1,240 1,315 44,336 45,651 Commercial and industrial 3,400 636 6,740 10,776 439,522 450,298 Direct financing leases, net — — — — 30,951 30,951 Consumer and other: Home equity and second mortgages — — — — 8,412 8,412 Other 186 — 378 564 15,765 16,329 Total $ 6,143 $ 636 $ 9,977 $ 16,756 $ 1,435,108 $ 1,451,864 Percent of portfolio 0.42 % 0.04 % 0.69 % 1.15 % 98.85 % 100.00 %
Schedule of Financing Receivables, Non Accrual Status	The Corporation’s total impaired assets consisted of the following at September 30, 2017 and December 31, 2016 , respectively. September 30, December 31, (Dollars in Thousands) Non-accrual loans and leases Commercial real estate: Commercial real estate — owner occupied $ 7,080 $ 2,223 Commercial real estate — non-owner occupied 1,826 1,609 Land development 2,770 3,440 Construction 5,354 2,918 Multi-family — — 1-4 family 1,864 1,937 Total non-accrual commercial real estate 18,894 12,127 Commercial and industrial 13,957 12,463 Direct financing leases, net — — Consumer and other: Home equity and second mortgages — — Other 381 604 Total non-accrual consumer and other loans 381 604 Total non-accrual loans and leases 33,232 25,194 Foreclosed properties, net 2,585 1,472 Total non-performing assets 35,817 26,666 Performing troubled debt restructurings 275 717 Total impaired assets $ 36,092 $ 27,383 September 30, December 31, Total non-accrual loans and leases to gross loans and leases 2.26 % 1.74 % Total non-performing assets to total gross loans and leases plus foreclosed properties, net 2.44 1.83 Total non-performing assets to total assets 2.01 1.50 Allowance for loan and lease losses to gross loans and leases 1.36 1.44 Allowance for loan and lease losses to non-accrual loans and leases 59.95 83.00
Troubled Debt Restructurings on Financing Receivables	As of September 30, 2017 As of December 31, 2016 Number of Loans Pre-Modification Recorded Investment Post-Modification Recorded Investment Number of Loans Pre-Modification Recorded Investment Post-Modification Recorded Investment (Dollars in Thousands) Commercial real estate: Commercial real estate — owner occupied 3 $ 1,065 $ 888 3 $ 1,065 $ 930 Commercial real estate — non-owner occupied 1 158 35 1 158 39 Land development 1 5,745 2,770 1 5,745 3,440 Construction — — — 2 331 314 Multi-family — — — — — — 1-4 family 10 1,287 1,353 11 1,391 1,393 Commercial and industrial 11 8,944 5,759 10 8,094 7,058 Consumer and other: Home equity and second mortgage 1 37 4 1 37 8 Other 2 2,094 359 1 2,076 378 Total 29 $ 19,330 $ 11,168 30 $ 18,897 $ 13,560
Troubled Debt Restructurings by Modification Type	As of September 30, 2017 and December 31, 2016 , the Corporation’s troubled debt restructurings grouped by type of concession were as follows: As of September 30, 2017 As of December 31, 2016 Number of Loans Recorded Investment Number of Loans Recorded Investment (Dollars in Thousands) Commercial real estate: Extension of term — $ — 1 $ 8 Interest rate concession 1 49 1 52 Combination of extension of term and interest rate concession 14 4,997 16 6,056 Commercial and industrial: Combination of extension of term and interest rate concession 11 5,759 10 7,058 Consumer and other: Extension of term 1 342 1 378 Combination of extension of term and interest rate concession 2 21 1 8 Total 29 $ 11,168 30 $ 13,560
Impaired Financing Receivables	The following represents additional information regarding the Corporation’s impaired loans and leases, including performing troubled debt restructurings, by class: As of and for the Nine Months Ended September 30, 2017 Recorded Unpaid Impairment Average (1) Foregone Interest Net (In Thousands) With no impairment reserve recorded: Commercial real estate: Owner occupied $ 6,727 $ 6,727 $ — $ 4,898 $ 394 $ — $ 394 Non-owner occupied 1,826 1,866 — 1,932 99 — 99 Land development 2,770 5,441 — 3,218 65 — 65 Construction 2,482 2,482 — 611 208 — 208 Multi-family — — — 1 — — — 1-4 family 2,065 2,319 — 2,387 69 — 69 Commercial and industrial 1,740 2,103 — 6,782 509 — 509 Direct financing leases, net — — — — — — — Consumer and other: Home equity and second mortgages 4 4 — 6 — — — Other 358 1,025 — 397 45 — 45 Total 17,972 21,967 — 20,232 1,389 — 1,389 With impairment reserve recorded: Commercial real estate: Owner occupied 411 411 15 424 19 — 19 Non-owner occupied — — — — — — — Land development — — — — — — — — — — Construction 2,872 2,872 — 94 4,091 — 108 — — 108 Multi-family — — — — — — — 1-4 family — — — — — — — Commercial and industrial 12,229 12,702 5,658 10,114 453 — 453 Direct financing leases, net — — — — — — — Consumer and other: Home equity and second mortgages — — — — — — — Other 23 23 23 10 — — — Total 15,535 16,008 5,790 14,639 580 — 580 Total: Commercial real estate: Owner occupied 7,138 7,138 15 5,322 413 — 413 Non-owner occupied 1,826 1,866 — 1,932 99 — 99 Land development 2,770 5,441 — 3,218 65 — 65 Construction 5,354 5,354 94 4,702 316 — 316 Multi-family — — — 1 — — — 1-4 family 2,065 2,319 — 2,387 69 — 69 Commercial and industrial 13,969 14,805 5,658 16,896 962 — 962 Direct financing leases, net — — — — — — — Consumer and other: Home equity and second mortgages 4 4 — 6 — — — Other 381 1,048 23 407 45 — 45 Grand total $ 33,507 $ 37,975 $ 5,790 $ 34,871 $ 1,969 $ — $ 1,969 (1) Average recorded investment is calculated primarily using daily average balances. As of and for the Year Ended December 31, 2016 Recorded Investment Unpaid Principal Balance Impairment Reserve Average Recorded Investment (1) Foregone Interest Income Interest Income Recognized Net Foregone Interest Income (In Thousands) With no impairment reserve recorded: Commercial real estate: Owner occupied $ 1,788 $ 1,788 $ — $ 3,577 $ 328 $ 118 $ 210 Non-owner occupied 1,609 1,647 — 1,318 91 79 12 Land development 3,440 6,111 — 3,898 107 — 107 Construction 436 438 — 291 20 — 20 Multi-family — — — — 1 134 (133 ) 1-4 family 2,379 2,379 — 2,755 125 94 31 Commercial and industrial 1,307 1,307 — 709 79 62 17 Direct financing leases, net — — — 6 — — — Consumer and other: Home equity and second mortgages 8 8 — 307 16 127 (111 ) Other 378 1,044 — 510 71 — 71 Total 11,345 14,722 — 13,371 838 614 224 With impairment reserve recorded: Commercial real estate: Owner occupied 499 499 70 111 28 — 28 Non-owner occupied — — — — — — — Land development — — — — — — — Construction 2,482 2,482 1,790 834 45 — 45 Multi-family — — — — — — — 1-4 family 193 199 39 203 5 — 5 Commercial and industrial 11,166 11,166 3,700 8,448 701 — 701 Direct financing leases, net — — — — — — — Consumer and other: Home equity and second mortgages — — — — — — — Other 226 226 — 19 — — — Total 14,566 14,572 5,599 9,615 779 — 779 Total: Commercial real estate: Owner occupied 2,287 2,287 70 3,688 356 118 238 Non-owner occupied 1,609 1,647 — 1,318 91 79 12 Land development 3,440 6,111 — 3,898 107 — 107 Construction 2,918 2,920 1,790 1,125 65 — 65 Multi-family — — — — 1 134 (133 ) 1-4 family 2,572 2,578 39 2,958 130 94 36 Commercial and industrial 12,473 12,473 3,700 9,157 780 62 718 Direct financing leases, net — — — 6 — — — Consumer and other: Home equity and second mortgages 8 8 — 307 16 127 (111 ) Other 604 1,270 — 529 71 — 71 Grand total $ 25,911 $ 29,294 $ 5,599 $ 22,986 $ 1,617 $ 614 $ 1,003 (1) Average recorded investment is calculated primarily using daily average balances.
Allowance for Loan and Lease Losses by Portfolio Segment	A summary of the activity in the allowance for loan and lease losses by portfolio segment is as follows: As of and for the Three Months Ended September 30, 2017 Commercial Real Estate Commercial and Industrial Consumer and Other Total (Dollars in Thousands) Beginning balance $ 12,003 $ 9,090 $ 584 $ 21,677 Charge-offs (8 ) (3,217 ) (5 ) (3,230 ) Recoveries 2 2 1 5 Net charge-offs (6 ) (3,215 ) (4 ) (3,225 ) Provision for credit losses (2,462 ) 3,968 (35 ) 1,471 Ending balance $ 9,535 $ 9,843 $ 545 $ 19,923 As of and for the Three Months Ended September 30, 2016 Commercial Real Estate Commercial and Industrial Consumer and Other Total (Dollars in Thousands) Beginning balance $ 11,436 $ 6,017 $ 701 $ 18,154 Charge-offs (259 ) (1,396 ) (1 ) (1,656 ) Recoveries 31 — 1 32 Net charge-offs (228 ) (1,396 ) — (1,624 ) Provision for credit losses 1,607 2,051 (121 ) 3,537 Ending balance $ 12,815 $ 6,672 $ 580 $ 20,067 As of and for the Nine Months Ended September 30, 2017 Commercial Real Estate Commercial and Industrial Consumer and Other Total (Dollars in Thousands) Beginning balance $ 12,384 $ 7,970 $ 558 $ 20,912 Charge-offs (126 ) (6,978 ) (92 ) (7,196 ) Recoveries 152 314 42 508 Net recoveries (charge-offs) 26 (6,664 ) (50 ) (6,688 ) Provision for credit loss (2,875 ) 8,537 37 5,699 Ending balance $ 9,535 $ 9,843 $ 545 $ 19,923 As of and for the Nine Months Ended September 30, 2016 Commercial Real Estate Commercial and Industrial Consumer and Other Total (Dollars in Thousands) Beginning balance $ 11,220 $ 4,387 $ 709 $ 16,316 Charge-offs (1,194 ) (2,048 ) (8 ) (3,250 ) Recoveries 170 2 5 177 Net charge-offs (1,024 ) (2,046 ) (3 ) (3,073 ) Provision for credit loss 2,619 4,331 (126 ) 6,824 Ending balance $ 12,815 $ 6,672 $ 580 $ 20,067
Allowance for Loan and Lease Losses and Balances by Type of Allowance Methodology	The following tables provide information regarding the allowance for loan and lease losses and balances by type of allowance methodology. As of September 30, 2017 Commercial Real Estate Commercial and Industrial Consumer and Other Total (Dollars in Thousands) Allowance for loan and lease losses: Collectively evaluated for impairment $ 9,426 $ 4,185 $ 522 $ 14,133 Individually evaluated for impairment 109 5,658 23 5,790 Loans acquired with deteriorated credit quality — — — — Total $ 9,535 $ 9,843 $ 545 $ 19,923 Loans and lease receivables: Collectively evaluated for impairment $ 947,600 $ 462,122 $ 24,838 $ 1,434,560 Individually evaluated for impairment 18,535 13,962 385 32,882 Loans acquired with deteriorated credit quality 618 7 — 625 Total $ 966,753 $ 476,091 $ 25,223 $ 1,468,067 As of December 31, 2016 Commercial Real Estate Commercial and Industrial Consumer and Other Total (Dollars in Thousands) Allowance for loan and lease losses: Collectively evaluated for impairment $ 10,485 $ 4,270 $ 558 $ 15,313 Individually evaluated for impairment 1,899 3,700 — 5,599 Loans acquired with deteriorated credit quality — — — — Total $ 12,384 $ 7,970 $ 558 $ 20,912 Loans and lease receivables: Collectively evaluated for impairment $ 933,048 $ 468,776 $ 24,129 $ 1,425,953 Individually evaluated for impairment 11,222 12,452 612 24,286 Loans acquired with deteriorated credit quality 1,604 21 — 1,625 Total $ 945,874 $ 481,249 $ 24,741 $ 1,451,864

Other Assets (Tables)

Other Assets (Tables)	9 Months Ended
	Sep. 30, 2017
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]
Schedule of Other Assets	A summary of accrued interest receivable and other assets is as follows: September 30, 2017 December 31, 2016 (In Thousands) Accrued interest receivable $ 4,722 $ 4,677 Net deferred tax asset 5,543 4,052 Investment in historic development entities 1,154 737 Investment in a CDE 6,719 7,106 Investment in limited partnerships 4,607 3,963 Investment in Trust II 315 315 Fair value of interest rate swaps 1,380 352 Prepaid expenses 3,338 3,074 Other assets 4,450 4,331 Total accrued interest receivable and other assets $ 32,228 $ 28,607

Deposits (Tables)

Deposits (Tables)	9 Months Ended
	Sep. 30, 2017
Deposits [Abstract]
Deposits	The composition of deposits at September 30, 2017 and December 31, 2016 is shown below. Average balances represent year-to-date averages. September 30, 2017 December 31, 2016 Balance Average Balance Average Rate Balance Average Balance Average Rate (Dollars in Thousands) Non-interest-bearing transaction accounts $ 253,320 $ 228,231 — % $ 252,638 $ 246,182 — % Interest-bearing transaction accounts 251,355 221,526 0.53 183,992 169,571 0.27 Money market accounts 527,705 601,455 0.45 627,090 642,784 0.48 Certificates of deposit 58,144 55,888 0.98 58,454 65,608 0.90 Wholesale deposits 333,200 374,083 1.68 416,681 467,826 1.62 Total deposits $ 1,423,724 $ 1,481,183 0.72 $ 1,538,855 $ 1,591,971 0.74

FHLB Advances, Other Borrowin33

FHLB Advances, Other Borrowings and Junior Subordinated Notes Payable (Tables)	9 Months Ended
	Sep. 30, 2017
Debt Disclosure [Abstract]
Schedule of Debt	The composition of borrowed funds at September 30, 2017 and December 31, 2016 is shown below. Average balances represent year-to-date averages. September 30, 2017 December 31, 2016 Balance Weighted Average Balance Weighted Average Rate Balance Weighted Average Balance Weighted Average Rate (Dollars in Thousands) Federal funds purchased $ — $ 88 1.21 % $ — $ 178 0.92 % FHLB advances 143,500 83,987 1.24 33,578 14,485 0.97 Line of credit 10 435 3.63 1,010 2,079 3.26 Other borrowings (1) 675 1,432 15.37 2,590 1,739 7.64 Subordinated notes payable 23,699 22,978 7.04 22,498 22,467 7.13 Junior subordinated notes 10,015 10,009 11.08 10,004 9,997 11.07 $ 177,899 $ 118,929 3.38 $ 69,680 $ 50,945 6.03 Short-term borrowings $ 54,510 $ 20,588 Long-term borrowings 123,389 49,092 $ 177,899 $ 69,680

Commitments and Contingencies34

Commitments and Contingencies (Tables)	9 Months Ended
	Sep. 30, 2017
Commitments and Contingencies Disclosure [Abstract]
Summary of SBA Recourse Reserve [Table Text Block]	The summary of the activity in the SBA recourse reserve is as follows: As of and for the Nine Months Ended September 30, 2017 As of and for the Year Ended December 31, 2016 (In Thousands) Balance at the beginning of the period $ 1,750 $ — SBA recourse provision 2,095 2,068 Charge-offs, net (1,141 ) (318 ) Balance at the end of the period $ 2,704 $ 1,750

Fair Value Disclosures (Tables)

Fair Value Disclosures (Tables)	9 Months Ended
	Sep. 30, 2017
Fair Value Disclosures [Abstract]
Fair Value Measurements, Recurring Basis	Assets and liabilities measured at fair value on a recurring basis, segregated by fair value hierarchy level, are summarized below: September 30, 2017 Fair Value Measurements Using Level 1 Level 2 Level 3 Total (In Thousands) Assets: Securities available-for-sale: U.S. Government agency obligations - government-sponsored enterprises $ — $ 3,807 $ — $ 3,807 Municipal obligations — 9,332 — 9,332 Collateralized mortgage obligations - government issued — 22,902 — 22,902 Collateralized mortgage obligations - government-sponsored enterprises — 95,089 — 95,089 Interest rate swaps — 1,380 — 1,380 Liabilities: Interest rate swaps — 1,380 — 1,380 December 31, 2016 Fair Value Measurements Using Level 1 Level 2 Level 3 Total (In Thousands) Assets: Securities available-for-sale: U.S. Government agency obligations - government-sponsored enterprises $ — $ 6,295 $ — $ 6,295 Municipal obligations — 8,156 — 8,156 Asset backed securities — 1,081 — 1,081 Collateralized mortgage obligations - government issued — 31,213 — 31,213 Collateralized mortgage obligations - government-sponsored enterprises — 99,148 — 99,148 Interest rate swaps — 352 — 352 Liabilities: Interest rate swaps — 352 — 352
Fair Value Measurements, Nonrecurring Basis	Assets and liabilities measured at fair value on a non-recurring basis, segregated by fair value hierarchy are summarized below: September 30, 2017 Fair Value Measurements Using Level 1 Level 2 Level 3 Total (In Thousands) Impaired loans $ — $ 7,637 $ 8,661 $ 16,298 Foreclosed properties — 1,472 — 1,472 December 31, 2016 Fair Value Measurements Using Level 1 Level 2 Level 3 Total (In Thousands) Impaired loans $ — $ 12,268 $ 1,097 $ 13,365 Foreclosed properties — 1,472 — 1,472
Fair Value, by Balance Sheet Grouping	Fair value estimates, methods and assumptions, consistent with exit price concepts for fair value measurements, are set forth below: September 30, 2017 Carrying Amount Fair Value Total Level 1 Level 2 Level 3 (In Thousands) Financial assets: Cash and cash equivalents $ 73,196 $ 73,218 $ 56,487 $ 16,731 $ — Securities available-for-sale 131,130 131,130 — 131,130 — Securities held-to-maturity 38,873 39,274 — 39,274 — Loans held for sale — — — — — Loans and lease receivables, net 1,446,790 1,427,071 — 7,637 1,419,434 Bank-owned life insurance 39,988 39,988 39,988 — — Federal Home Loan Bank and Federal Reserve Bank stock 5,083 5,083 — — 5,083 Accrued interest receivable 4,722 4,722 4,722 — — Interest rate swaps 1,380 1,380 — 1,380 — Financial liabilities: Deposits 1,423,724 1,424,275 1,032,379 391,896 — Federal Home Loan Bank advances and other borrowings 167,884 152,391 — 152,391 — Junior subordinated notes 10,015 8,829 — — 8,829 Accrued interest payable 2,317 2,317 2,317 — — Interest rate swaps 1,380 1,380 — 1,380 — Off-balance-sheet items: Standby letters of credit 86 86 — — 86 December 31, 2016 Carrying Amount Fair Value Total Level 1 Level 2 Level 3 (In Thousands) Financial assets: Cash and cash equivalents $ 77,517 $ 77,517 $ 55,622 $ 21,895 $ — Securities available-for-sale 145,893 145,893 — 145,893 — Securities held-to-maturity 38,612 38,520 — 38,520 — Loans held for sale 1,111 1,222 — 1,222 — Loans and lease receivables, net 1,429,763 1,447,044 — 12,268 1,434,776 Bank-owned life insurance 39,048 39,048 — 39,048 — Federal Home Loan Bank and Federal Reserve Bank stock 2,131 2,131 — 2,131 — Accrued interest receivable 4,677 4,677 4,677 — — Interest rate swaps 352 352 — 352 — Financial liabilities: Deposits 1,538,855 1,539,413 1,063,720 475,693 — Federal Home Loan Bank advances and other borrowings 59,676 60,893 — 60,893 — Junior subordinated notes 10,004 9,072 — — 9,072 Accrued interest payable 1,765 1,765 1,765 — — Interest rate swaps 352 352 — 352 — Off-balance-sheet items: Standby letters of credit 58 58 — — 58

Derivative Financial Instrume36

Derivative Financial Instruments (Tables)	9 Months Ended
	Sep. 30, 2017
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Schedule of Derivative Instruments in Statement of Financial Position, Fair Value	The table below provides information about the balance sheet location and fair value of the Corporation’s derivative instruments as of September 30, 2017 and December 31, 2016 . Interest Rate Swap Contracts Asset Derivatives Liability Derivatives Balance Sheet Location Fair Value Balance Sheet Location Fair Value (In Thousands) Derivatives not designated as hedging instruments September 30, 2017 Accrued interest receivable and other assets $ 1,380 Accrued interest payable and other liabilities $ 1,380 December 31, 2016 Accrued interest receivable and other assets $ 352 Accrued interest payable and other liabilities $ 352

Regulatory Capital (Tables)

Regulatory Capital (Tables)	9 Months Ended
	Sep. 30, 2017
Regulatory Capital Requirements [Abstract]
Schedule of Compliance with Regulatory Capital Requirements under Banking Regulations	The following table summarizes both the Corporation’s and Bank’s capital ratios and the ratios required by their federal regulators at September 30, 2017 : Actual Minimum Required for Capital Adequacy Purposes For Capital Adequacy Purposes Plus Capital Conservation Buffer Minimum Required to Be Well Amount Ratio Amount Ratio Amount Ratio Amount Ratio (Dollars in Thousands) As of September 30, 2017 Total capital (to risk-weighted assets) Consolidated $ 209,495 11.91 % $ 140,737 8.00 % $ 162,727 9.25 % N/A N/A First Business Bank 205,877 11.75 140,132 8.00 162,027 9.25 $ 175,164 10.00 % Tier 1 capital (to risk-weighted assets) Consolidated $ 165,873 9.43 % $ 105,553 6.00 % $ 127,543 7.25 % N/A N/A First Business Bank 185,954 10.62 105,099 6.00 126,994 7.25 $ 140,132 8.00 % Common equity tier 1 capital (to risk-weighted assets) Consolidated $ 155,858 8.86 % $ 79,164 4.50 % $ 101,155 5.75 % N/A N/A First Business Bank 185,954 10.62 78,824 4.50 100,720 5.75 $ 113,857 6.50 % Tier 1 leverage capital (to adjusted assets) Consolidated $ 165,873 9.39 % $ 70,654 4.00 % $ 70,654 4.00 % N/A N/A First Business Bank 185,954 10.56 70,409 4.00 70,409 4.00 $ 88,011 5.00 % The following table summarizes both the Corporation’s and the Corporation’s legacy bank charters’ ratios and the ratios required by their federal regulators at December 31, 2016: Actual Minimum Required for Capital Adequacy Purposes For Capital Adequacy Purposes Plus Capital Conservation Buffer Minimum Required to Be Well Amount Ratio Amount Ratio Amount Ratio Amount Ratio (Dollars in Thousands) As of December 31, 2016 Total capital (to risk-weighted assets) Consolidated $ 204,117 11.74 % $ 139,101 8.00 % $ 149,968 8.625 % N/A N/A First Business Bank 147,811 11.55 102,362 8.00 110,360 8.625 $ 127,953 10.00 % First Business Bank — Milwaukee 24,347 11.02 17,680 8.00 19,062 8.625 22,101 10.00 Alterra Bank 31,699 13.27 19,106 8.00 20,599 8.625 23,882 10.00 Tier 1 capital (to risk-weighted assets) Consolidated $ 160,964 9.26 % $ 104,326 6.00 % $ 115,193 6.625 % N/A N/A First Business Bank 134,208 10.49 76,772 6.00 84,769 6.625 $ 102,362 8.00 % First Business Bank — Milwaukee 22,323 10.10 13,260 6.00 14,642 6.625 17,680 8.00 Alterra Bank 28,685 12.01 14,329 6.00 15,822 6.625 19,106 8.00 Common equity tier 1 capital (to risk-weighted assets) Consolidated $ 150,960 8.68 % $ 78,244 4.50 % $ 89,111 5.125 % N/A N/A First Business Bank 134,208 10.49 57,579 4.50 65,576 5.125 $ 83,170 6.50 % First Business Bank — Milwaukee 22,323 10.10 9,945 4.50 11,327 5.125 14,365 6.50 Alterra Bank 28,685 12.01 10,747 4.50 12,240 5.125 15,524 6.50 Tier 1 leverage capital (to adjusted assets) Consolidated $ 160,964 9.07 % $ 70,985 4.00 % $ 70,985 4.00 % N/A N/A First Business Bank 134,208 10.40 51,600 4.00 51,600 4.00 $ 64,500 5.00 % First Business Bank — Milwaukee 22,323 9.15 9,758 4.00 9,758 4.00 12,198 5.00 Alterra Bank 28,685 10.58 10,842 4.00 10,842 4.00 13,552 5.00

Earnings Per Common Share (Deta

Earnings Per Common Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Basic earnings per common share
Net income	$ 2,584	$ 2,665	$ 7,867	$ 10,941
Less: earnings allocated to participating securities	35	38	105	165
Basic earnings allocated to common shareholders	$ 2,549	$ 2,627	$ 7,762	$ 10,776
Weighted-average common shares outstanding, excluding participating securities	8,621,311	8,582,836	8,606,080	8,569,613
Basic earnings per common share	$ 0.30	$ 0.31	$ 0.90	$ 1.26
Diluted earnings per common share
Earnings allocated to common shareholders, diluted	$ 2,549	$ 2,627	$ 7,762	$ 10,776
Weighted-average common shares outstanding, excluding participating securities	8,621,311	8,582,836	8,606,080	8,569,613
Weighted-average diluted common shares outstanding, excluding participating securities	8,621,311	8,582,836	8,606,080	8,569,613
Diluted earnings per common share	$ 0.30	$ 0.31	$ 0.90	$ 1.26

Earnings Per Common Share (Narr

Earnings Per Common Share (Narrative Disclosures) (Details) - shares	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016
Earnings Per Share [Abstract]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	0	0

Share-Based Compensation (Restr

Share-Based Compensation (Restricted Share Activity) (Details) - $ / shares	9 Months Ended	12 Months Ended
	Sep. 30, 2017	Dec. 31, 2016
Number of Restricted Shares
Nonvested balance, beginning	116,245	135,471
Granted	64,725	60,415
Vested	(45,695)	(56,090)
Forfeited	(7,619)	(23,551)
Nonvested balance, ending	127,656	116,245
Weighted Average Grant-Date Fair Value
Nonvested balance, beginning	$ 21.13	$ 20.13
Granted	21.62	22.74
Vested	21.49	18.71
Forfeited	21.57	20.90
Nonvested balance, ending	$ 21.39	$ 21.13

Share-Based Compensation (Share

Share-Based Compensation (Share-Based Payment Plan Expense) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Share-based compensation	$ 268	$ 292	$ 811	$ 858

Share-Based Compensation (Narra

Share-Based Compensation (Narrative Disclosures) (Details) $ in Millions	9 Months Ended
	Sep. 30, 2017USD ($)shares
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Number of shares available for grant | shares	217,475
Deferred compensation expense yet to be recognized | $	$ 2.6
Period of time that deferred compensation expense will be recognized	3 years 10 days

Securities (Available-for-Sale

Securities (Available-for-Sale Securities) (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Schedule of Available-for-sale Securities
Amortized cost	$ 131,499	$ 146,461
Gross unrealized holding gains	490	684
Gross unrealized holding losses	(859)	(1,252)
Fair Value	131,130	145,893
U.S. Government agency obligations - government-sponsored enterprises
Schedule of Available-for-sale Securities
Amortized cost	3,799	6,298
Gross unrealized holding gains	11	7
Gross unrealized holding losses	(3)	(10)
Fair Value	3,807	6,295
Municipal obligations
Schedule of Available-for-sale Securities
Amortized cost	9,342	8,246
Gross unrealized holding gains	13	2
Gross unrealized holding losses	(23)	(92)
Fair Value	9,332	8,156
Asset-backed securities
Schedule of Available-for-sale Securities
Amortized cost		1,116
Gross unrealized holding gains		0
Gross unrealized holding losses		(35)
Fair Value		1,081
Collateralized mortgage obligations - government issued
Schedule of Available-for-sale Securities
Amortized cost	22,750	30,936
Gross unrealized holding gains	301	423
Gross unrealized holding losses	(149)	(146)
Fair Value	22,902	31,213
Collateralized mortgage obligations - government-sponsored enterprises
Schedule of Available-for-sale Securities
Amortized cost	95,608	99,865
Gross unrealized holding gains	165	252
Gross unrealized holding losses	(684)	(969)
Fair Value	$ 95,089	$ 99,148

Securities (Held-to-Maturity Se

Securities (Held-to-Maturity Securities) (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Schedule of Held-to-maturity Securities
Amortized cost	$ 38,873	$ 38,612
Gross unrecognized holding gains	471	87
Gross unrecognized holding losses	(70)	(179)
Estimated Fair Value	39,274	38,520
U.S. Government agency obligations - government-sponsored enterprises
Schedule of Held-to-maturity Securities
Amortized cost	1,498	1,497
Gross unrecognized holding gains	0	2
Gross unrecognized holding losses	(5)	(5)
Estimated Fair Value	1,493	1,494
Municipal obligations
Schedule of Held-to-maturity Securities
Amortized cost	21,928	21,173
Gross unrecognized holding gains	443	62
Gross unrecognized holding losses	(14)	(78)
Estimated Fair Value	22,357	21,157
Collateralized mortgage obligations - government issued
Schedule of Held-to-maturity Securities
Amortized cost	9,601	9,148
Gross unrecognized holding gains	16	17
Gross unrecognized holding losses	(33)	(38)
Estimated Fair Value	9,584	9,127
Collateralized mortgage obligations - government-sponsored enterprises
Schedule of Held-to-maturity Securities
Amortized cost	5,846	6,794
Gross unrecognized holding gains	12	6
Gross unrecognized holding losses	(18)	(58)
Estimated Fair Value	$ 5,840	$ 6,742

Securities (Contractual Maturit

Securities (Contractual Maturity) (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Available-for-Sale, Amortized Cost
Due in one year or less	$ 6,785
Due in one year through five years	13,156
Due in five through ten years	48,051
Due in over ten years	63,507
Amortized cost	131,499	$ 146,461
Available-for-Sale, Estimated Fair Value
Due in one year or less	6,783
Due in one year through five years	13,194
Due in five through ten years	48,168
Due in over ten years	62,985
Estimated fair value	131,130	145,893
Held-to-Maturity, Amortized Cost
Due in one year or less	0
Due in one year through five years	11,177
Due in five through ten years	13,258
Due in over ten years	14,438
Amortized cost	38,873	38,612
Held-to-Maturity, Estimated Fair Value
Due in one year or less	0
Due in one year through five years	11,326
Due in five through ten years	13,495
Due in over ten years	14,453
Estimated Fair Value	$ 39,274	$ 38,520

Securities (Unrealized Losses A

Securities (Unrealized Losses Available for Sale) (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Fair Value
Less than 12 Months	$ 39,147	$ 74,593
12 Months or Longer	43,076	3,799
Total	82,223	78,392
Unrealized Losses
Less than 12 Months	144	1,160
12 Months or Longer	715	92
Total	859	1,252
U.S. Government agency obligations - government-sponsored enterprises
Fair Value
Less than 12 Months	800	1,991
12 Months or Longer	1,997	0
Total	2,797	1,991
Unrealized Losses
Less than 12 Months	0	10
12 Months or Longer	3	0
Total	3	10
Municipal obligations
Fair Value
Less than 12 Months	1,916	7,207
12 Months or Longer	3,011	406
Total	4,927	7,613
Unrealized Losses
Less than 12 Months	9	89
12 Months or Longer	14	3
Total	23	92
Asset-backed securities
Fair Value
Less than 12 Months		0
12 Months or Longer		1,081
Total		1,081
Unrealized Losses
Less than 12 Months		0
12 Months or Longer		35
Total		35
Collateralized mortgage obligations - government issued
Fair Value
Less than 12 Months	3,679	10,552
12 Months or Longer	6,185	493
Total	9,864	11,045
Unrealized Losses
Less than 12 Months	14	130
12 Months or Longer	135	16
Total	149	146
Collateralized mortgage obligations - government-sponsored enterprises
Fair Value
Less than 12 Months	32,752	54,843
12 Months or Longer	31,883	1,819
Total	64,635	56,662
Unrealized Losses
Less than 12 Months	121	931
12 Months or Longer	563	38
Total	$ 684	$ 969

Securities (Unrealized Losses H

Securities (Unrealized Losses Held-to-Maturity) (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Fair Value
Less than 12 months	$ 4,659	$ 22,134
12 months or longer	5,991	0
Total	10,650	22,134
Unrealized Losses
Less than 12 months	24	179
12 months or longer	46	0
Total	70	179
U.S. Government agency obligations - government-sponsored enterprises
Fair Value
Less than 12 months	1,000	1,000
12 months or longer	0	0
Total	1,000	1,000
Unrealized Losses
Less than 12 months	5	5
12 months or longer	0	0
Total	5	5
Municipal obligations
Fair Value
Less than 12 months	853	9,472
12 months or longer	260	0
Total	1,113	9,472
Unrealized Losses
Less than 12 months	11	78
12 months or longer	3	0
Total	14	78
Collateralized mortgage obligations - government issued
Fair Value
Less than 12 months	2,806	6,980
12 months or longer	3,804	0
Total	6,610	6,980
Unrealized Losses
Less than 12 months	8	38
12 months or longer	25	0
Total	33	38
Collateralized mortgage obligations - government-sponsored enterprises
Fair Value
Less than 12 months	0	4,682
12 months or longer	1,927	0
Total	1,927	4,682
Unrealized Losses
Less than 12 months	0	58
12 months or longer	18	0
Total	$ 18	$ 58

Securities (Narrative Disclosur

Securities (Narrative Disclosures) (Details) $ in Thousands	9 Months Ended
	Sep. 30, 2017USD ($)securities	Sep. 30, 2016USD ($)securities	Dec. 31, 2016USD ($)
Investments, Debt and Equity Securities [Abstract]
Number of available-for-sale securities sold	14	3
Available-for-sale securities pledged as collateral | $	$ 1,900		$ 22,400
Number of available-for-sales securities in an unrealized loss position	106
Number of available-for-sale securities in an unrealized loss position, twelve months or greater	56
Other than temporary impairment on available-for-sale securities recorded on the income statement | $	$ 0	$ 0
Number of held-to-maturity securities in an unrealized loss position	14
Number of held-to-maturity Securities in an unrealized loss position, twelve months or greater	7
Other than temporary impairment on held-to-maturity securities recorded on the income statement | $	$ 0	$ 0

Loan and Lease Receivables, I49

Loan and Lease Receivables, Impaired Loans and Leases and Allowance for Loan and Lease Losses (Loan Composition) (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Jun. 30, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Dec. 31, 2015
Receivables [Abstract]
Commercial real estate — owner occupied	$ 182,755		$ 176,459
Commercial real estate — non-owner occupied	461,586		473,158
Land development	41,499		56,638
Construction	115,660		101,206
Multi-family	125,080		92,762
1-4 family	40,173		45,651
Total commercial real estate	966,753		945,874
Commercial and industrial	447,223		450,298
Direct financing leases, net	28,868		30,951
Home equity and second mortgages	7,776		8,412
Other	17,447		16,329
Total consumer and other	25,223		24,741
Total gross loans and leases receivable	1,468,067		1,451,864
Allowance for loan and lease losses	19,923	$ 21,677	20,912	$ 20,067	$ 18,154	$ 16,316
Deferred loan fees	1,354		1,189
Loans and leases receivable, net	$ 1,446,790		$ 1,429,763

Loan and Lease Receivables, I50

Loan and Lease Receivables, Impaired Loans and Leases and Allowance for Loan and Lease Losses (SBA Loans) (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Receivables [Abstract]
Unguaranteed Portion of Sold SBA loans Retained	$ 30,632	$ 30,418
Other SBA Loans	25,684	31,728
Small Business Administration Loans	$ 56,316	$ 62,146

Loan and Lease Receivables, I51

Loan and Lease Receivables, Impaired Loans and Leases and Allowance for Loan and Lease Losses (Loans by Credit Quality Indicator) (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Financing Receivable, Recorded Investment
Commercial real estate — owner occupied	$ 182,755	$ 176,459
Commercial real estate — non-owner occupied	461,586	473,158
Land development	41,499	56,638
Construction	115,660	101,206
Multi-family	125,080	92,762
1-4 family	40,173	45,651
Total commercial real estate	966,753	945,874
Commercial and industrial	447,223	450,298
Direct financing leases, net	28,868	30,951
Home equity and second mortgages	7,776	8,412
Other	17,447	16,329
Total consumer and other	25,223	24,741
Total gross loans and leases receivable	$ 1,468,067	$ 1,451,864
Category as a % of total portfolio	100.00%	100.00%
Category I
Financing Receivable, Recorded Investment
Commercial real estate — owner occupied	$ 147,603	$ 142,704
Commercial real estate — non-owner occupied	438,874	447,895
Land development	37,659	52,082
Construction	109,102	93,510
Multi-family	125,080	87,418
1-4 family	29,051	38,504
Total commercial real estate	887,369	862,113
Commercial and industrial	348,179	348,201
Direct financing leases, net	26,854	29,351
Home equity and second mortgages	7,764	8,271
Other	17,066	15,714
Total consumer and other	24,830	23,985
Total gross loans and leases receivable	$ 1,287,232	$ 1,263,650
Category as a % of total portfolio	87.68%	87.04%
Category II
Financing Receivable, Recorded Investment
Commercial real estate — owner occupied	$ 19,324	$ 20,294
Commercial real estate — non-owner occupied	19,769	20,933
Land development	795	823
Construction	773	3,154
Multi-family	0	1,937
1-4 family	7,824	3,144
Total commercial real estate	48,485	50,285
Commercial and industrial	26,605	42,949
Direct financing leases, net	305	1,600
Home equity and second mortgages	0	121
Other	0	0
Total consumer and other	0	121
Total gross loans and leases receivable	$ 75,395	$ 94,955
Category as a % of total portfolio	5.14%	6.54%
Category III
Financing Receivable, Recorded Investment
Commercial real estate — owner occupied	$ 8,690	$ 11,174
Commercial real estate — non-owner occupied	1,117	2,721
Land development	275	293
Construction	431	1,624
Multi-family	0	3,407
1-4 family	1,233	1,431
Total commercial real estate	11,746	20,650
Commercial and industrial	58,470	46,675
Direct financing leases, net	1,709	0
Home equity and second mortgages	8	12
Other	0	11
Total consumer and other	8	23
Total gross loans and leases receivable	$ 71,933	$ 67,348
Category as a % of total portfolio	4.90%	4.64%
Category IV
Financing Receivable, Recorded Investment
Commercial real estate — owner occupied	$ 7,138	$ 2,287
Commercial real estate — non-owner occupied	1,826	1,609
Land development	2,770	3,440
Construction	5,354	2,918
Multi-family	0	0
1-4 family	2,065	2,572
Total commercial real estate	19,153	12,826
Commercial and industrial	13,969	12,473
Direct financing leases, net	0	0
Home equity and second mortgages	4	8
Other	381	604
Total consumer and other	385	612
Total gross loans and leases receivable	$ 33,507	$ 25,911
Category as a % of total portfolio	2.28%	1.78%

Loan and Lease Receivables, I52

Loan and Lease Receivables, Impaired Loans and Leases and Allowance for Loan and Lease Losses (Past Due Loans) (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	$ 28,964	$ 16,756
Current	1,439,103	1,435,108
Non-accrual loans and leases	33,232	25,194
Total gross loans and leases receivable	$ 1,468,067	$ 1,451,864
30 to 59 days past due, percent of total portfolio	0.24%	0.42%
60 to 89 days past due, percent of total portfolio	0.07%	0.04%
Greater than 90 days past due, percent of portfolio	1.66%	0.69%
Past due, percent of total portfolio	1.97%	1.15%
Current, percent of total portfolio	98.03%	98.85%
Gross loans, percent of total portfolio	100.00%	100.00%
Commercial real estate — owner occupied
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	$ 4,825	$ 1,183
Current	177,930	175,276
Non-accrual loans and leases	7,080	2,223
Total gross loans and leases receivable	182,755	176,459
Commercial real estate — non-owner occupied
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	1,791	0
Current	459,795	473,158
Non-accrual loans and leases	1,826	1,609
Total gross loans and leases receivable	461,586	473,158
Land development
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	0	0
Current	41,499	56,638
Non-accrual loans and leases	2,770	3,440
Total gross loans and leases receivable	41,499	56,638
Construction
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	5,745	2,918
Current	109,915	98,288
Non-accrual loans and leases	5,354	2,918
Total gross loans and leases receivable	115,660	101,206
Multi-family
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	0	0
Current	125,080	92,762
Non-accrual loans and leases	0	0
Total gross loans and leases receivable	125,080	92,762
1-4 family
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	1,580	1,315
Current	38,593	44,336
Non-accrual loans and leases	1,864	1,937
Total gross loans and leases receivable	40,173	45,651
Commercial and industrial
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	14,436	10,776
Current	432,787	439,522
Non-accrual loans and leases	13,957	12,463
Total gross loans and leases receivable	447,223	450,298
Direct financing leases, net
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	0	0
Current	28,868	30,951
Non-accrual loans and leases	0	0
Total gross loans and leases receivable	28,868	30,951
Home equity and second mortgages
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	229	0
Current	7,547	8,412
Non-accrual loans and leases	0	0
Total gross loans and leases receivable	7,776	8,412
Other
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	358	564
Current	17,089	15,765
Non-accrual loans and leases	381	604
Total gross loans and leases receivable	17,447	16,329
Accruing loans and leases
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	3,348	598
Current	1,431,487	1,426,072
Accrual loans and leases	1,434,835	1,426,670
Accruing loans and leases | Commercial real estate — owner occupied
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	0	0
Current	175,675	174,236
Accrual loans and leases	175,675	174,236
Accruing loans and leases | Commercial real estate — non-owner occupied
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	0	0
Current	459,760	471,549
Accrual loans and leases	459,760	471,549
Accruing loans and leases | Land development
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	0	0
Current	38,729	53,198
Accrual loans and leases	38,729	53,198
Accruing loans and leases | Construction
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	392	0
Current	109,914	98,288
Accrual loans and leases	110,306	98,288
Accruing loans and leases | Multi-family
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	0	0
Current	125,080	92,762
Accrual loans and leases	125,080	92,762
Accruing loans and leases | 1-4 family
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	0	75
Current	38,309	43,639
Accrual loans and leases	38,309	43,714
Accruing loans and leases | Commercial and industrial
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	2,727	523
Current	430,539	437,312
Accrual loans and leases	433,266	437,835
Accruing loans and leases | Direct financing leases, net
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	0	0
Current	28,868	30,951
Accrual loans and leases	28,868	30,951
Accruing loans and leases | Home equity and second mortgages
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	229	0
Current	7,547	8,412
Accrual loans and leases	7,776	8,412
Accruing loans and leases | Other
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	0	0
Current	17,066	15,725
Accrual loans and leases	17,066	15,725
Non-accruing loans and leases
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	25,616	16,158
Current	7,616	9,036
Non-accrual loans and leases	33,232	25,194
Non-accruing loans and leases | Commercial real estate — owner occupied
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	4,825	1,183
Current	2,255	1,040
Non-accrual loans and leases	7,080	2,223
Non-accruing loans and leases | Commercial real estate — non-owner occupied
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	1,791	0
Current	35	1,609
Non-accrual loans and leases	1,826	1,609
Non-accruing loans and leases | Land development
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	0
Current	2,770	3,440
Non-accrual loans and leases	2,770	3,440
Non-accruing loans and leases | Construction
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	5,353	2,918
Current	1	0
Non-accrual loans and leases	5,354	2,918
Non-accruing loans and leases | Multi-family
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	0	0
Current	0	0
Non-accrual loans and leases	0	0
Non-accruing loans and leases | 1-4 family
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	1,580	1,240
Current	284	697
Non-accrual loans and leases	1,864	1,937
Non-accruing loans and leases | Commercial and industrial
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	11,709	10,253
Current	2,248	2,210
Non-accrual loans and leases	13,957	12,463
Non-accruing loans and leases | Direct financing leases, net
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	0	0
Current	0	0
Non-accrual loans and leases	0	0
Non-accruing loans and leases | Home equity and second mortgages
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	0	0
Current	0	0
Non-accrual loans and leases	0	0
Non-accruing loans and leases | Other
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	358	564
Current	23	40
Non-accrual loans and leases	381	604
30-59 days past due
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	3,614	6,143
30-59 days past due | Commercial real estate — owner occupied
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	0	0
30-59 days past due | Commercial real estate — non-owner occupied
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	0	0
30-59 days past due | Land development
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	0	0
30-59 days past due | Construction
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	392	2,482
30-59 days past due | Multi-family
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	0	0
30-59 days past due | 1-4 family
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	529	75
30-59 days past due | Commercial and industrial
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	2,464	3,400
30-59 days past due | Direct financing leases, net
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	0	0
30-59 days past due | Home equity and second mortgages
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	229	0
30-59 days past due | Other
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	0	186
30-59 days past due | Accruing loans and leases
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	2,878	130
30-59 days past due | Accruing loans and leases | Commercial real estate — owner occupied
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	0	0
30-59 days past due | Accruing loans and leases | Commercial real estate — non-owner occupied
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	0	0
30-59 days past due | Accruing loans and leases | Land development
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	0	0
30-59 days past due | Accruing loans and leases | Construction
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	392	0
30-59 days past due | Accruing loans and leases | Multi-family
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	0	0
30-59 days past due | Accruing loans and leases | 1-4 family
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	0	75
30-59 days past due | Accruing loans and leases | Commercial and industrial
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	2,257	55
30-59 days past due | Accruing loans and leases | Direct financing leases, net
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	0	0
30-59 days past due | Accruing loans and leases | Home equity and second mortgages
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	229	0
30-59 days past due | Accruing loans and leases | Other
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	0	0
30-59 days past due | Non-accruing loans and leases
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	736	6,013
30-59 days past due | Non-accruing loans and leases | Commercial real estate — owner occupied
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	0	0
30-59 days past due | Non-accruing loans and leases | Commercial real estate — non-owner occupied
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	0	0
30-59 days past due | Non-accruing loans and leases | Land development
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	0	0
30-59 days past due | Non-accruing loans and leases | Construction
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	0	2,482
30-59 days past due | Non-accruing loans and leases | Multi-family
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	0	0
30-59 days past due | Non-accruing loans and leases | 1-4 family
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	529	0
30-59 days past due | Non-accruing loans and leases | Commercial and industrial
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	207	3,345
30-59 days past due | Non-accruing loans and leases | Direct financing leases, net
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	0	0
30-59 days past due | Non-accruing loans and leases | Home equity and second mortgages
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	0	0
30-59 days past due | Non-accruing loans and leases | Other
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	0	186
60-89 days past due
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	977	636
60-89 days past due | Commercial real estate — owner occupied
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	0	0
60-89 days past due | Commercial real estate — non-owner occupied
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	0	0
60-89 days past due | Land development
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	0	0
60-89 days past due | Construction
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	0	0
60-89 days past due | Multi-family
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	0	0
60-89 days past due | 1-4 family
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	10	0
60-89 days past due | Commercial and industrial
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	967	636
60-89 days past due | Direct financing leases, net
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	0	0
60-89 days past due | Home equity and second mortgages
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	0	0
60-89 days past due | Other
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	0	0
60-89 days past due | Accruing loans and leases
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	470	468
60-89 days past due | Accruing loans and leases | Commercial real estate — owner occupied
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	0	0
60-89 days past due | Accruing loans and leases | Commercial real estate — non-owner occupied
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	0	0
60-89 days past due | Accruing loans and leases | Land development
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	0	0
60-89 days past due | Accruing loans and leases | Construction
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	0	0
60-89 days past due | Accruing loans and leases | Multi-family
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	0	0
60-89 days past due | Accruing loans and leases | 1-4 family
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	0	0
60-89 days past due | Accruing loans and leases | Commercial and industrial
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	470	468
60-89 days past due | Accruing loans and leases | Direct financing leases, net
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	0	0
60-89 days past due | Accruing loans and leases | Home equity and second mortgages
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	0	0
60-89 days past due | Accruing loans and leases | Other
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	0	0
60-89 days past due | Non-accruing loans and leases
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	507	168
60-89 days past due | Non-accruing loans and leases | Commercial real estate — owner occupied
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	0	0
60-89 days past due | Non-accruing loans and leases | Commercial real estate — non-owner occupied
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	0	0
60-89 days past due | Non-accruing loans and leases | Land development
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	0	0
60-89 days past due | Non-accruing loans and leases | Construction
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	0	0
60-89 days past due | Non-accruing loans and leases | Multi-family
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	0	0
60-89 days past due | Non-accruing loans and leases | 1-4 family
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	10	0
60-89 days past due | Non-accruing loans and leases | Commercial and industrial
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	497	168
60-89 days past due | Non-accruing loans and leases | Direct financing leases, net
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	0	0
60-89 days past due | Non-accruing loans and leases | Home equity and second mortgages
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	0	0
60-89 days past due | Non-accruing loans and leases | Other
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	0	0
Greater than 90 days past due
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	24,373	9,977
Greater than 90 days past due | Commercial real estate — owner occupied
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	4,825	1,183
Greater than 90 days past due | Commercial real estate — non-owner occupied
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	1,791	0
Greater than 90 days past due | Land development
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	0	0
Greater than 90 days past due | Construction
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	5,353	436
Greater than 90 days past due | Multi-family
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	0	0
Greater than 90 days past due | 1-4 family
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	1,041	1,240
Greater than 90 days past due | Commercial and industrial
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	11,005	6,740
Greater than 90 days past due | Direct financing leases, net
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	0	0
Greater than 90 days past due | Home equity and second mortgages
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	0	0
Greater than 90 days past due | Other
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	358	378
Greater than 90 days past due | Accruing loans and leases
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	0	0
Greater than 90 days past due | Accruing loans and leases | Commercial real estate — owner occupied
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	0	0
Greater than 90 days past due | Accruing loans and leases | Commercial real estate — non-owner occupied
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	0	0
Greater than 90 days past due | Accruing loans and leases | Land development
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	0	0
Greater than 90 days past due | Accruing loans and leases | Construction
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	0	0
Greater than 90 days past due | Accruing loans and leases | Multi-family
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	0	0
Greater than 90 days past due | Accruing loans and leases | 1-4 family
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	0	0
Greater than 90 days past due | Accruing loans and leases | Commercial and industrial
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	0	0
Greater than 90 days past due | Accruing loans and leases | Direct financing leases, net
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	0	0
Greater than 90 days past due | Accruing loans and leases | Home equity and second mortgages
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	0	0
Greater than 90 days past due | Accruing loans and leases | Other
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	0	0
Greater than 90 days past due | Non-accruing loans and leases
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	24,373	9,977
Greater than 90 days past due | Non-accruing loans and leases | Commercial real estate — owner occupied
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	4,825	1,183
Greater than 90 days past due | Non-accruing loans and leases | Commercial real estate — non-owner occupied
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	1,791	0
Greater than 90 days past due | Non-accruing loans and leases | Land development
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	0	0
Greater than 90 days past due | Non-accruing loans and leases | Construction
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	5,353	436
Greater than 90 days past due | Non-accruing loans and leases | Multi-family
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	0	0
Greater than 90 days past due | Non-accruing loans and leases | 1-4 family
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	1,041	1,240
Greater than 90 days past due | Non-accruing loans and leases | Commercial and industrial
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	11,005	6,740
Greater than 90 days past due | Non-accruing loans and leases | Direct financing leases, net
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	0	0
Greater than 90 days past due | Non-accruing loans and leases | Home equity and second mortgages
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	0	0
Greater than 90 days past due | Non-accruing loans and leases | Other
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	$ 358	$ 378

Loan and Lease Receivables, I53

Loan and Lease Receivables, Impaired Loans and Leases and Allowance for Loan and Lease Losses (Non-accrual Loans) (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Financing Receivable, Impaired
Non-accrual loans and leases	$ 33,232	$ 25,194
Foreclosed properties, net	2,585	1,472
Total non-performing assets	35,817	26,666
Performing troubled debt restructurings	275	717
Total impaired assets	$ 36,092	$ 27,383
Total non-accrual loans and leases to gross loans and leases	2.26%	1.74%
Total non-performing assets to total gross loans and leases plus foreclosed properties, net	2.44%	1.83%
Total non-performing assets to total assets	2.01%	1.50%
Allowance for loan and lease losses to gross loans and leases	1.36%	1.44%
Allowance for loan and lease losses to non-accrual loans and leases	59.95%	83.00%
Commercial real estate — owner occupied
Financing Receivable, Impaired
Non-accrual loans and leases	$ 7,080	$ 2,223
Commercial real estate — non-owner occupied
Financing Receivable, Impaired
Non-accrual loans and leases	1,826	1,609
Land development
Financing Receivable, Impaired
Non-accrual loans and leases	2,770	3,440
Construction
Financing Receivable, Impaired
Non-accrual loans and leases	5,354	2,918
Multi-family
Financing Receivable, Impaired
Non-accrual loans and leases	0	0
1-4 family
Financing Receivable, Impaired
Non-accrual loans and leases	1,864	1,937
Total non-accrual commercial real estate
Financing Receivable, Impaired
Non-accrual loans and leases	18,894	12,127
Commercial and industrial
Financing Receivable, Impaired
Non-accrual loans and leases	13,957	12,463
Direct financing leases, net
Financing Receivable, Impaired
Non-accrual loans and leases	0	0
Home equity and second mortgages
Financing Receivable, Impaired
Non-accrual loans and leases	0	0
Other
Financing Receivable, Impaired
Non-accrual loans and leases	381	604
Total non-accrual consumer and other loans
Financing Receivable, Impaired
Non-accrual loans and leases	$ 381	$ 604

Loan and Lease Receivables, I54

Loan and Lease Receivables, Impaired Loans and Leases and Allowance for Loan and Lease Losses (Troubled Debt Restructurings) (Details) $ in Thousands	Sep. 30, 2017USD ($)loans	Dec. 31, 2016USD ($)loans
Troubled debt restructurings
Number of Loans | loans	29	30
Pre-Modification Recorded Investment	$ 19,330	$ 18,897
Post-Modification Recorded Investment	$ 11,168	$ 13,560
Commercial real estate — owner occupied
Troubled debt restructurings
Number of Loans | loans	3	3
Pre-Modification Recorded Investment	$ 1,065	$ 1,065
Post-Modification Recorded Investment	$ 888	$ 930
Commercial real estate — non-owner occupied
Troubled debt restructurings
Number of Loans | loans	1	1
Pre-Modification Recorded Investment	$ 158	$ 158
Post-Modification Recorded Investment	$ 35	$ 39
Land development
Troubled debt restructurings
Number of Loans | loans	1	1
Pre-Modification Recorded Investment	$ 5,745	$ 5,745
Post-Modification Recorded Investment	$ 2,770	$ 3,440
Construction
Troubled debt restructurings
Number of Loans | loans	0	2
Pre-Modification Recorded Investment	$ 0	$ 331
Post-Modification Recorded Investment	$ 0	$ 314
Multi-family
Troubled debt restructurings
Number of Loans | loans	0	0
Pre-Modification Recorded Investment	$ 0	$ 0
Post-Modification Recorded Investment	$ 0	$ 0
1-4 family
Troubled debt restructurings
Number of Loans | loans	10	11
Pre-Modification Recorded Investment	$ 1,287	$ 1,391
Post-Modification Recorded Investment	$ 1,353	$ 1,393
Commercial and industrial
Troubled debt restructurings
Number of Loans | loans	11	10
Pre-Modification Recorded Investment	$ 8,944	$ 8,094
Post-Modification Recorded Investment	$ 5,759	$ 7,058
Home equity and second mortgages
Troubled debt restructurings
Number of Loans | loans	1	1
Pre-Modification Recorded Investment	$ 37	$ 37
Post-Modification Recorded Investment	$ 4	$ 8
Other
Troubled debt restructurings
Number of Loans | loans	2	1
Pre-Modification Recorded Investment	$ 2,094	$ 2,076
Post-Modification Recorded Investment	$ 359	$ 378

Loan and Lease Receivables, I55

Loan and Lease Receivables, Impaired Loans and Leases and Allowance for Loan and Lease Losses (Troubled Debt Restructurings by Modification Type) (Details) $ in Thousands	Sep. 30, 2017USD ($)securitiesloans	Dec. 31, 2016USD ($)securitiesloans
Troubled debt restructurings
Number of Loans | loans	29	30
Recorded Investment	$ 11,168	$ 13,560
Commercial and industrial
Troubled debt restructurings
Number of Loans | loans	11	10
Recorded Investment	$ 5,759	$ 7,058
Extension of term | Commercial real estate:
Troubled debt restructurings
Number of Loans | loans	0	1
Recorded Investment	$ 0	$ 8
Extension of term | Consumer and other:
Troubled debt restructurings
Number of Loans | loans	1	1
Recorded Investment	$ 342	$ 378
Interest rate concession | Commercial real estate:
Troubled debt restructurings
Number of Loans | securities	1	1
Recorded Investment	$ 49	$ 52
Combination of extension of term and interest rate concession | Commercial real estate:
Troubled debt restructurings
Number of Loans | loans	14	16
Recorded Investment	$ 4,997	$ 6,056
Combination of extension of term and interest rate concession | Commercial and industrial
Troubled debt restructurings
Number of Loans | loans	11	10
Recorded Investment	$ 5,759	$ 7,058
Combination of extension of term and interest rate concession | Consumer and other:
Troubled debt restructurings
Number of Loans | loans	2	1
Recorded Investment	$ 21	$ 8

Loan and Lease Receivables, I56

Loan and Lease Receivables, Impaired Loans and Leases and Allowance for Loan and Lease Losses (Impaired Loans and Leases) (Details) - USD ($) $ in Thousands		9 Months Ended	12 Months Ended
		Sep. 30, 2017	Dec. 31, 2016
Recorded Investment
With no impairment reserve recorded		$ 17,972	$ 11,345
With impairment reserve recorded		15,535	14,566
Total		33,507	25,911
Unpaid Principal Balance
With no impairment reserve recorded		21,967	14,722
With impairment reserve recorded		16,008	14,572
Total		37,975	29,294
Impairment Reserve
Impairment Reserve		5,790	5,599
Average Recorded Investment(1)
With no impairment reserve recorded	[1]	20,232	13,371
With impairment reserve recorded	[1]	14,639	9,615
Total	[1]	34,871	22,986
Foregone Interest Income
With no impairment reserve recorded		1,389	838
With impairment reserve recorded		580	779
Foregone interest income		1,969	1,617
Interest Income Recognized
With no impairment reserve recorded		0	614
With impairment reserve recorded		0	0
Total		0	614
Net Foregone Interest Income
With no impairment reserve recorded		1,389	224
With impairment reserve recorded		580	779
Total		1,969	1,003
Commercial real estate — owner occupied
Recorded Investment
With no impairment reserve recorded		6,727	1,788
With impairment reserve recorded		411	499
Total		7,138	2,287
Unpaid Principal Balance
With no impairment reserve recorded		6,727	1,788
With impairment reserve recorded		411	499
Total		7,138	2,287
Impairment Reserve
Impairment Reserve		15	70
Average Recorded Investment(1)
With no impairment reserve recorded	[1]	4,898	3,577
With impairment reserve recorded	[1]	424	111
Total	[1]	5,322	3,688
Foregone Interest Income
With no impairment reserve recorded		394	328
With impairment reserve recorded		19	28
Foregone interest income		413	356
Interest Income Recognized
With no impairment reserve recorded		0	118
With impairment reserve recorded		0	0
Total		0	118
Net Foregone Interest Income
With no impairment reserve recorded		394	210
With impairment reserve recorded		19	28
Total		413	238
Commercial real estate — non-owner occupied
Recorded Investment
With no impairment reserve recorded		1,826	1,609
With impairment reserve recorded		0	0
Total		1,826	1,609
Unpaid Principal Balance
With no impairment reserve recorded		1,866	1,647
With impairment reserve recorded		0	0
Total		1,866	1,647
Impairment Reserve
Impairment Reserve		0	0
Average Recorded Investment(1)
With no impairment reserve recorded	[1]	1,932	1,318
With impairment reserve recorded	[1]	0	0
Total	[1]	1,932	1,318
Foregone Interest Income
With no impairment reserve recorded		99	91
With impairment reserve recorded		0	0
Foregone interest income		99	91
Interest Income Recognized
With no impairment reserve recorded		0	79
With impairment reserve recorded		0	0
Total		0	79
Net Foregone Interest Income
With no impairment reserve recorded		99	12
With impairment reserve recorded		0	0
Total		99	12
Land development
Recorded Investment
With no impairment reserve recorded		2,770	3,440
With impairment reserve recorded		0	0
Total		2,770	3,440
Unpaid Principal Balance
With no impairment reserve recorded		5,441	6,111
With impairment reserve recorded		0	0
Total		5,441	6,111
Impairment Reserve
Impairment Reserve		0	0
Average Recorded Investment(1)
With no impairment reserve recorded	[1]	3,218	3,898
With impairment reserve recorded	[1]	0	0
Total	[1]	3,218	3,898
Foregone Interest Income
With no impairment reserve recorded		65	107
With impairment reserve recorded		0	0
Foregone interest income		65	107
Interest Income Recognized
With no impairment reserve recorded		0	0
With impairment reserve recorded		0	0
Total		0	0
Net Foregone Interest Income
With no impairment reserve recorded		65	107
With impairment reserve recorded		0	0
Total		65	107
Construction
Recorded Investment
With no impairment reserve recorded		2,482	436
With impairment reserve recorded		2,872	2,482
Total		5,354	2,918
Unpaid Principal Balance
With no impairment reserve recorded		2,482	438
With impairment reserve recorded		2,872	2,482
Total		5,354	2,920
Impairment Reserve
Impairment Reserve		94	1,790
Average Recorded Investment(1)
With no impairment reserve recorded	[1]	611	291
With impairment reserve recorded	[1]	4,091	834
Total	[1]	4,702	1,125
Foregone Interest Income
With no impairment reserve recorded		208	20
With impairment reserve recorded		108	45
Foregone interest income		316	65
Interest Income Recognized
With no impairment reserve recorded		0	0
With impairment reserve recorded		0	0
Total		0	0
Net Foregone Interest Income
With no impairment reserve recorded		208	20
With impairment reserve recorded		108	45
Total		316	65
Multi-family
Recorded Investment
With no impairment reserve recorded		0	0
With impairment reserve recorded		0	0
Total		0	0
Unpaid Principal Balance
With no impairment reserve recorded		0	0
With impairment reserve recorded		0	0
Total		0	0
Impairment Reserve
Impairment Reserve		0	0
Average Recorded Investment(1)
With no impairment reserve recorded	[1]	1	0
With impairment reserve recorded	[1]	0	0
Total	[1]	1	0
Foregone Interest Income
With no impairment reserve recorded		0	1
With impairment reserve recorded		0	0
Foregone interest income		0	1
Interest Income Recognized
With no impairment reserve recorded		0	134
With impairment reserve recorded		0	0
Total		0	134
Net Foregone Interest Income
With no impairment reserve recorded		0	(133)
With impairment reserve recorded		0	0
Total		0	(133)
1-4 family
Recorded Investment
With no impairment reserve recorded		2,065	2,379
With impairment reserve recorded		0	193
Total		2,065	2,572
Unpaid Principal Balance
With no impairment reserve recorded		2,319	2,379
With impairment reserve recorded		0	199
Total		2,319	2,578
Impairment Reserve
Impairment Reserve		0	39
Average Recorded Investment(1)
With no impairment reserve recorded	[1]	2,387	2,755
With impairment reserve recorded	[1]	0	203
Total	[1]	2,387	2,958
Foregone Interest Income
With no impairment reserve recorded		69	125
With impairment reserve recorded		0	5
Foregone interest income		69	130
Interest Income Recognized
With no impairment reserve recorded		0	94
With impairment reserve recorded		0	0
Total		0	94
Net Foregone Interest Income
With no impairment reserve recorded		69	31
With impairment reserve recorded		0	5
Total		69	36
Commercial and industrial
Recorded Investment
With no impairment reserve recorded		1,740	1,307
With impairment reserve recorded		12,229	11,166
Total		13,969	12,473
Unpaid Principal Balance
With no impairment reserve recorded		2,103	1,307
With impairment reserve recorded		12,702	11,166
Total		14,805	12,473
Impairment Reserve
Impairment Reserve		5,658	3,700
Average Recorded Investment(1)
With no impairment reserve recorded	[1]	6,782	709
With impairment reserve recorded	[1]	10,114	8,448
Total	[1]	16,896	9,157
Foregone Interest Income
With no impairment reserve recorded		509	79
With impairment reserve recorded		453	701
Foregone interest income		962	780
Interest Income Recognized
With no impairment reserve recorded		0	62
With impairment reserve recorded		0	0
Total		0	62
Net Foregone Interest Income
With no impairment reserve recorded		509	17
With impairment reserve recorded		453	701
Total		962	718
Direct financing leases, net
Recorded Investment
With no impairment reserve recorded		0	0
With impairment reserve recorded		0	0
Total		0	0
Unpaid Principal Balance
With no impairment reserve recorded		0	0
With impairment reserve recorded		0	0
Total		0	0
Impairment Reserve
Impairment Reserve		0	0
Average Recorded Investment(1)
With no impairment reserve recorded	[1]	0	6
With impairment reserve recorded	[1]	0	0
Total	[1]	0	6
Foregone Interest Income
With no impairment reserve recorded		0	0
With impairment reserve recorded		0	0
Foregone interest income		0	0
Interest Income Recognized
With no impairment reserve recorded		0	0
With impairment reserve recorded		0	0
Total		0	0
Net Foregone Interest Income
With no impairment reserve recorded		0	0
With impairment reserve recorded		0	0
Total		0	0
Home equity and second mortgages
Recorded Investment
With no impairment reserve recorded		4	8
With impairment reserve recorded		0	0
Total		4	8
Unpaid Principal Balance
With no impairment reserve recorded		4	8
With impairment reserve recorded		0	0
Total		4	8
Impairment Reserve
Impairment Reserve		0	0
Average Recorded Investment(1)
With no impairment reserve recorded	[1]	6	307
With impairment reserve recorded	[1]	0	0
Total	[1]	6	307
Foregone Interest Income
With no impairment reserve recorded		0	16
With impairment reserve recorded		0	0
Foregone interest income		0	16
Interest Income Recognized
With no impairment reserve recorded		0	127
With impairment reserve recorded		0	0
Total		0	127
Net Foregone Interest Income
With no impairment reserve recorded		0	(111)
With impairment reserve recorded		0	0
Total		0	(111)
Other
Recorded Investment
With no impairment reserve recorded		358	378
With impairment reserve recorded		23	226
Total		381	604
Unpaid Principal Balance
With no impairment reserve recorded		1,025	1,044
With impairment reserve recorded		23	226
Total		1,048	1,270
Impairment Reserve
Impairment Reserve		23	0
Average Recorded Investment(1)
With no impairment reserve recorded	[1]	397	510
With impairment reserve recorded	[1]	10	19
Total	[1]	407	529
Foregone Interest Income
With no impairment reserve recorded		45	71
With impairment reserve recorded		0	0
Foregone interest income		45	71
Interest Income Recognized
With no impairment reserve recorded		0	0
With impairment reserve recorded		0	0
Total		0	0
Net Foregone Interest Income
With no impairment reserve recorded		45	71
With impairment reserve recorded		0	0
Total		$ 45	$ 71
[1]	(1)Average recorded investment is calculated primarily using daily average balances.

Loan and Lease Receivables, I57

Loan and Lease Receivables, Impaired Loans and Leases and Allowance for Loan and Lease Losses (Allowance for Loan and Lease Losses) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Allowance for credit losses roll-forward
Allowance for loan and lease losses - begin	$ 21,677	$ 18,154	$ 20,912	$ 16,316
Charge-offs	(3,230)	(1,656)	(7,196)	(3,250)
Recoveries	5	32	508	177
Net (charge-offs) recoveries	(3,225)	(1,624)	(6,688)	(3,073)
Provision for credit loss	1,471	3,537	5,699	6,824
Allowance for loan and lease losses - end	19,923	20,067	19,923	20,067
Commercial real estate:
Allowance for credit losses roll-forward
Allowance for loan and lease losses - begin	12,003	11,436	12,384	11,220
Charge-offs	(8)	(259)	(126)	(1,194)
Recoveries	2	31	152	170
Net (charge-offs) recoveries	(6)	(228)	26	(1,024)
Provision for credit loss	(2,462)	1,607	(2,875)	2,619
Allowance for loan and lease losses - end	9,535	12,815	9,535	12,815
Commercial and industrial loans and leases
Allowance for credit losses roll-forward
Allowance for loan and lease losses - begin	9,090	6,017	7,970	4,387
Charge-offs	(3,217)	(1,396)	(6,978)	(2,048)
Recoveries	2	0	314	2
Net (charge-offs) recoveries	(3,215)	(1,396)	(6,664)	(2,046)
Provision for credit loss	3,968	2,051	8,537	4,331
Allowance for loan and lease losses - end	9,843	6,672	9,843	6,672
Consumer and other:
Allowance for credit losses roll-forward
Allowance for loan and lease losses - begin	584	701	558	709
Charge-offs	(5)	(1)	(92)	(8)
Recoveries	1	1	42	5
Net (charge-offs) recoveries	(4)	0	(50)	(3)
Provision for credit loss	(35)	(121)	37	(126)
Allowance for loan and lease losses - end	$ 545	$ 580	$ 545	$ 580

Loan and Lease Receivables, I58

Loan and Lease Receivables, Impaired Loans and Leases and Allowance for Loan and Lease Losses Allowance for Loan and Lease Losses 2 (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Jun. 30, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Dec. 31, 2015
Financing Receivable, Allowance for Credit Losses [Line Items]
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment	$ 14,133		$ 15,313
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	5,790		5,599
Allowance for loan and lease losses	19,923	$ 21,677	20,912	$ 20,067	$ 18,154	$ 16,316
Financing Receivable, Collectively Evaluated for Impairment	1,434,560		1,425,953
Financing Receivable, Individually Evaluated for Impairment	32,882		24,286
Loans and Leases Receivable, Gross	1,468,067		1,451,864
Loans acquired with deteriorated credit quality
Financing Receivable, Allowance for Credit Losses [Line Items]
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	0		0
Financing Receivable, Individually Evaluated for Impairment	625		1,625
Commercial real estate:
Financing Receivable, Allowance for Credit Losses [Line Items]
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment	9,426		10,485
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	109		1,899
Allowance for loan and lease losses	9,535	12,003	12,384	12,815	11,436	11,220
Financing Receivable, Collectively Evaluated for Impairment	947,600		933,048
Financing Receivable, Individually Evaluated for Impairment	18,535		11,222
Loans and Leases Receivable, Gross	966,753		945,874
Commercial real estate: | Loans acquired with deteriorated credit quality
Financing Receivable, Allowance for Credit Losses [Line Items]
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	0		0
Financing Receivable, Individually Evaluated for Impairment	618		1,604
Commercial and industrial loans and leases
Financing Receivable, Allowance for Credit Losses [Line Items]
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment	4,185		4,270
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	5,658		3,700
Allowance for loan and lease losses	9,843	9,090	7,970	6,672	6,017	4,387
Financing Receivable, Collectively Evaluated for Impairment	462,122		468,776
Financing Receivable, Individually Evaluated for Impairment	13,962		12,452
Loans and Leases Receivable, Gross	476,091		481,249
Commercial and industrial loans and leases | Loans acquired with deteriorated credit quality
Financing Receivable, Allowance for Credit Losses [Line Items]
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	0		0
Financing Receivable, Individually Evaluated for Impairment	7		21
Consumer and other:
Financing Receivable, Allowance for Credit Losses [Line Items]
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment	522		558
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	23		0
Allowance for loan and lease losses	545	$ 584	558	$ 580	$ 701	$ 709
Financing Receivable, Collectively Evaluated for Impairment	24,838		24,129
Financing Receivable, Individually Evaluated for Impairment	385		612
Loans and Leases Receivable, Gross	25,223		24,741
Consumer and other: | Loans acquired with deteriorated credit quality
Financing Receivable, Allowance for Credit Losses [Line Items]
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	0		0
Financing Receivable, Individually Evaluated for Impairment	$ 0		$ 0

Loan and Lease Receivables, I59

Loan and Lease Receivables, Impaired Loans and Leases and Allowance for Loan and Lease Losses (Narrative Disclosures) (Details) loans in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017USD ($)	Sep. 30, 2016USD ($)	Sep. 30, 2017USD ($)loans	Sep. 30, 2016USD ($)	Dec. 31, 2016USD ($)
Financing Receivable, Recorded Investment
Financing Receivable, Modifications, Number of Contracts		0		0
SBA loans in the participation sold portfolio, considered impaired	$ 11,900,000		$ 11,900,000		$ 5,500,000
Guaranteed Portion of SBA Loans Sold to Third Parties Total	6,300,000	$ 3,300,000	15,500,000	$ 36,400,000
Total amount of outstanding SBA loans sold	103,300,000		103,300,000		105,100,000
Loans and leases transferred to third parties total principal amount	9,000,000	7,900,000	17,000,000	17,700,000
Gain (Loss) Recognized on Participation Interest in Originated Loans			0	0
Total amount of outstanding loans transferred to third parties as loan participations	91,700,000		91,700,000		102,700,000
Total amount of loan participations remaining on the Corporations balance sheet	146,200,000		146,200,000		106,100,000
Loans in the participation sold portfolio, considered impaired	0		0		0
Loan participations purchased on the Corporation's balance sheet	669,000		669,000		1,200,000
Residential Real Estate Loans Sold, Principal Amount	0	$ 8,000,000	1,600,000	$ 15,200,000
Total gross loans and leases receivable	1,468,067,000		1,468,067,000		1,451,864,000
Non-accrual troubled debt restructurings	10,900,000		10,900,000		12,800,000
Unfunded commitments, troubled debt restructurings	0		$ 0
Troubled debt restructurings, subsequent default, number of loans | loans			0
Loans and leases receivable, difference between recorded investment and unpaid principal balance	4,500,000		$ 4,500,000		3,400,000
Performing troubled debt restructurings	275,000		275,000		717,000
Substandard
Financing Receivable, Recorded Investment
Total gross loans and leases receivable	36,700,000		36,700,000		34,300,000
Special Mention
Financing Receivable, Recorded Investment
Total gross loans and leases receivable	0		0		0
Doubtful
Financing Receivable, Recorded Investment
Total gross loans and leases receivable	5,055,000		5,055,000		0
Loss
Financing Receivable, Recorded Investment
Total gross loans and leases receivable	0		$ 0		0
Consumer and other:
Financing Receivable, Recorded Investment
Financing Receivable, Modifications, Number of Contracts			1
Financing Receivable, Modifications, Post-Modification Recorded Investment			$ 17,000
Total gross loans and leases receivable	$ 25,223,000		$ 25,223,000		24,741,000
Commercial and industrial
Financing Receivable, Recorded Investment
Financing Receivable, Modifications, Number of Contracts	2		4
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 800,000		$ 4,400,000
Total gross loans and leases receivable	$ 447,223,000		$ 447,223,000		$ 450,298,000

Other Assets Accrued Interest R

Other Assets Accrued Interest Receivable and Other Assets (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]
Accrued interest receivable	$ 4,722	$ 4,677
Net deferred tax asset	5,543	4,052
Investment in historic development entities	1,154	737
Investment in a CDE	6,719	7,106
Investment in limited partnerships	4,607	3,963
Investment in Trust II	315	315
Fair value of interest rate swaps	1,380	352
Prepaid expenses	3,338	3,074
Other assets	4,450	4,331
Total accrued interest receivable and other assets	$ 32,228	$ 28,607

Other Assets Tax Credits Narrat

Other Assets Tax Credits Narrative (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016	Dec. 31, 2016
Investment Holdings [Line Items]
Investment in limited partnerships	$ 4,607,000		$ 4,607,000		$ 3,963,000
Impairment of tax credit investments	112,000	$ 3,314,000	338,000	$ 3,520,000
BOC Investment, LLC | Historic Rehabilitation Tax Credits
Investment Holdings [Line Items]
Investment in limited partnerships	174,000		174,000		174,000
Mitchell Street Apartments Investment, LLC | Historic Rehabilitation Tax Credits
Investment Holdings [Line Items]
Investment in limited partnerships	563,000		563,000		563,000
Tax Credit Benefits Recognized			0
Estimated Capital Contributions	5,500,000		5,500,000
Kenosha [Member] [Member] | Historic Rehabilitation Tax Credits
Investment Holdings [Line Items]
Investment in limited partnerships	417,000		417,000
Estimated Capital Contributions	2,100,000		2,100,000
Rimrock Road Investment Fund, LLC | New Market Tax Credits
Investment Holdings [Line Items]
Investment in limited partnerships	6,700,000		6,700,000		$ 7,100,000
Tax Credit Benefits Recognized			$ 338,000	$ 281,000
New Market Tax Credit Benefit, Period of Recognition			7 years
Federal New Market Tax Credits Not Yet Recognized	$ 1,500,000		$ 1,500,000

Other Assets Other Investments

Other Assets Other Investments Narrative (Details) - USD ($)	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Dec. 31, 2016	Sep. 26, 2008
Schedule of Equity Method Investments [Line Items]
Investment in limited partnerships	$ 4,607,000		$ 3,963,000
Income (Loss) from Equity Method Investments	236,000	$ 708,000
Investment in Trust II	315,000		315,000
Aldine Capital Fund, LP
Schedule of Equity Method Investments [Line Items]
Investment in limited partnerships	948,000		883,000
Aldine Capital Fund II, LP
Schedule of Equity Method Investments [Line Items]
Investment in limited partnerships	$ 3,700,000		$ 3,100,000
Trust II [Member]
Schedule of Equity Method Investments [Line Items]
Sole ownership of common securities issued by Trust II				$ 315,000
Trust preferred securities				$ 10,000,000
Debt Instrument, Interest Rate, Stated Percentage				10.50%

Deposits (Details)

Deposits (Details) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2017	Dec. 31, 2016
Deposits [Line Items]
Deposits	$ 1,423,724	$ 1,538,855
Average balance, deposits	$ 1,481,183	$ 1,591,971
Deposits, weighted average interest rate during the period	0.72%	0.74%
Non-interest-bearing transaction accounts
Deposits [Line Items]
Deposits	$ 253,320	$ 252,638
Average balance, deposits	$ 228,231	$ 246,182
Deposits, weighted average interest rate during the period	0.00%	0.00%
Interest-bearing transaction accounts
Deposits [Line Items]
Deposits	$ 251,355	$ 183,992
Average balance, deposits	$ 221,526	$ 169,571
Deposits, weighted average interest rate during the period	0.53%	0.27%
Money market accounts
Deposits [Line Items]
Deposits	$ 527,705	$ 627,090
Average balance, deposits	$ 601,455	$ 642,784
Deposits, weighted average interest rate during the period	0.45%	0.48%
Certificates of deposit
Deposits [Line Items]
Deposits	$ 58,144	$ 58,454
Average balance, deposits	$ 55,888	$ 65,608
Deposits, weighted average interest rate during the period	0.98%	0.90%
Wholesale deposits
Deposits [Line Items]
Deposits	$ 333,200	$ 416,681
Average balance, deposits	$ 374,083	$ 467,826
Deposits, weighted average interest rate during the period	1.68%	1.62%

FHLB Advances, Other Borrowin64

FHLB Advances, Other Borrowings and Junior Subordinated Notes Payable (Composition of Borrowed Funds) (Details) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2017	Dec. 31, 2016
Composition of Borrowed Funds [Line Items]
Borrowed funds	$ 177,899	$ 69,680
Borrowed funds, average balance	$ 118,929	$ 50,945
Borrowed funds, interest rate during period	3.38%	6.03%
Long-term borrowings
Composition of Borrowed Funds [Line Items]
Borrowed funds	$ 123,389	$ 49,092
Short-term borrowings
Composition of Borrowed Funds [Line Items]
Borrowed funds	54,510	20,588
Federal funds purchased
Composition of Borrowed Funds [Line Items]
Borrowed funds	0	0
Borrowed funds, average balance	$ 88	$ 178
Borrowed funds, interest rate during period	1.21%	0.92%
FHLB advances
Composition of Borrowed Funds [Line Items]
Borrowed funds	$ 143,500	$ 33,578
Borrowed funds, average balance	$ 83,987	$ 14,485
Borrowed funds, interest rate during period	1.24%	0.97%
Line of credit
Composition of Borrowed Funds [Line Items]
Borrowed funds	$ 10	$ 1,010
Borrowed funds, average balance	$ 435	$ 2,079
Borrowed funds, interest rate during period	3.63%	3.26%
Other borrowings
Composition of Borrowed Funds [Line Items]
Borrowed funds	$ 675	$ 2,590
Borrowed funds, average balance	$ 1,432	$ 1,739
Borrowed funds, interest rate during period	15.37%	7.64%
Subordinated notes payable
Composition of Borrowed Funds [Line Items]
Borrowed funds	$ 23,699	$ 22,498
Borrowed funds, average balance	$ 22,978	$ 22,467
Borrowed funds, interest rate during period	7.04%	7.13%
Junior subordinated notes
Composition of Borrowed Funds [Line Items]
Borrowed funds	$ 10,015	$ 10,004
Borrowed funds, average balance	$ 10,009	$ 9,997
Borrowed funds, interest rate during period	11.08%	11.07%

FHLB Advances, Other Borrowin65

FHLB Advances, Other Borrowings and Junior Subordinated Notes Payable (Narrative Disclosures) (Details) - USD ($)	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016
Line of credit
Line of Credit Facility [Line Items]
Line of credit - unused line fee	$ 10,000	$ 10,000

Commitments and Contingencies S

Commitments and Contingencies SBA Recourse Reserve Rollforward (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016	Dec. 31, 2016
Commitments and Contingencies Disclosure [Abstract]
Beginning balance			$ 1,750	$ 0	$ 0
SBA Recourse Provision	$ 1,315	$ 375	2,095	$ 449	2,068
SBA Loan Charge Offs, Net			(1,141)		(318)
Ending balance	$ 2,704		$ 2,704		$ 1,750

Commitments and Contingencies N

Commitments and Contingencies Narrative (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016	Dec. 31, 2016
Commitments and Contingencies Disclosure [Abstract]
SBA Loans, Probability of Future Losses	$ 2,700		$ 2,700
SBA Recourse Provision	$ 1,315	$ 375	$ 2,095	$ 449	$ 2,068

Fair Value Disclosures (Measure

Fair Value Disclosures (Measured on a Recurring Basis) (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Interest rate swaps
Fair Value, Assets and Liabilities Measured on a Recurring Basis
Liabilities measured on a recurring basis, fair value	$ 1,380	$ 352
Interest rate swaps | Fair Value Measurements - Level 1 Inputs
Fair Value, Assets and Liabilities Measured on a Recurring Basis
Liabilities measured on a recurring basis, fair value	0	0
Interest rate swaps | Fair Value Measurements - Level 2 Inputs
Fair Value, Assets and Liabilities Measured on a Recurring Basis
Liabilities measured on a recurring basis, fair value	1,380	352
Interest rate swaps | Fair Value Measurements - Level 3 Inputs
Fair Value, Assets and Liabilities Measured on a Recurring Basis
Liabilities measured on a recurring basis, fair value	0	0
Interest rate swaps
Fair Value, Assets and Liabilities Measured on a Recurring Basis
Assets measured on a recurring basis, fair value	1,380	352
Interest rate swaps | Fair Value Measurements - Level 1 Inputs
Fair Value, Assets and Liabilities Measured on a Recurring Basis
Assets measured on a recurring basis, fair value	0	0
Interest rate swaps | Fair Value Measurements - Level 2 Inputs
Fair Value, Assets and Liabilities Measured on a Recurring Basis
Assets measured on a recurring basis, fair value	1,380	352
Interest rate swaps | Fair Value Measurements - Level 3 Inputs
Fair Value, Assets and Liabilities Measured on a Recurring Basis
Assets measured on a recurring basis, fair value	0	0
U.S. Government agency obligations - government-sponsored enterprises
Fair Value, Assets and Liabilities Measured on a Recurring Basis
Assets measured on a recurring basis, fair value	3,807	6,295
U.S. Government agency obligations - government-sponsored enterprises | Fair Value Measurements - Level 1 Inputs
Fair Value, Assets and Liabilities Measured on a Recurring Basis
Assets measured on a recurring basis, fair value	0	0
U.S. Government agency obligations - government-sponsored enterprises | Fair Value Measurements - Level 2 Inputs
Fair Value, Assets and Liabilities Measured on a Recurring Basis
Assets measured on a recurring basis, fair value	3,807	6,295
U.S. Government agency obligations - government-sponsored enterprises | Fair Value Measurements - Level 3 Inputs
Fair Value, Assets and Liabilities Measured on a Recurring Basis
Assets measured on a recurring basis, fair value	0	0
Municipal obligations
Fair Value, Assets and Liabilities Measured on a Recurring Basis
Assets measured on a recurring basis, fair value	9,332	8,156
Municipal obligations | Fair Value Measurements - Level 1 Inputs
Fair Value, Assets and Liabilities Measured on a Recurring Basis
Assets measured on a recurring basis, fair value	0	0
Municipal obligations | Fair Value Measurements - Level 2 Inputs
Fair Value, Assets and Liabilities Measured on a Recurring Basis
Assets measured on a recurring basis, fair value	9,332	8,156
Municipal obligations | Fair Value Measurements - Level 3 Inputs
Fair Value, Assets and Liabilities Measured on a Recurring Basis
Assets measured on a recurring basis, fair value	0	0
Asset-backed securities
Fair Value, Assets and Liabilities Measured on a Recurring Basis
Assets measured on a recurring basis, fair value		1,081
Asset-backed securities | Fair Value Measurements - Level 1 Inputs
Fair Value, Assets and Liabilities Measured on a Recurring Basis
Assets measured on a recurring basis, fair value		0
Asset-backed securities | Fair Value Measurements - Level 2 Inputs
Fair Value, Assets and Liabilities Measured on a Recurring Basis
Assets measured on a recurring basis, fair value		1,081
Asset-backed securities | Fair Value Measurements - Level 3 Inputs
Fair Value, Assets and Liabilities Measured on a Recurring Basis
Assets measured on a recurring basis, fair value		0
Collateralized mortgage obligations - government issued
Fair Value, Assets and Liabilities Measured on a Recurring Basis
Assets measured on a recurring basis, fair value	22,902	31,213
Collateralized mortgage obligations - government issued | Fair Value Measurements - Level 1 Inputs
Fair Value, Assets and Liabilities Measured on a Recurring Basis
Assets measured on a recurring basis, fair value	0	0
Collateralized mortgage obligations - government issued | Fair Value Measurements - Level 2 Inputs
Fair Value, Assets and Liabilities Measured on a Recurring Basis
Assets measured on a recurring basis, fair value	22,902	31,213
Collateralized mortgage obligations - government issued | Fair Value Measurements - Level 3 Inputs
Fair Value, Assets and Liabilities Measured on a Recurring Basis
Assets measured on a recurring basis, fair value	0	0
Collateralized mortgage obligations - government-sponsored enterprises
Fair Value, Assets and Liabilities Measured on a Recurring Basis
Assets measured on a recurring basis, fair value	95,089	99,148
Collateralized mortgage obligations - government-sponsored enterprises | Fair Value Measurements - Level 1 Inputs
Fair Value, Assets and Liabilities Measured on a Recurring Basis
Assets measured on a recurring basis, fair value	0	0
Collateralized mortgage obligations - government-sponsored enterprises | Fair Value Measurements - Level 2 Inputs
Fair Value, Assets and Liabilities Measured on a Recurring Basis
Assets measured on a recurring basis, fair value	95,089	99,148
Collateralized mortgage obligations - government-sponsored enterprises | Fair Value Measurements - Level 3 Inputs
Fair Value, Assets and Liabilities Measured on a Recurring Basis
Assets measured on a recurring basis, fair value	$ 0	$ 0

Fair Value Disclosures (Measu69

Fair Value Disclosures (Measured on a Non-Recurring Basis) (Details) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2017	Dec. 31, 2016
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total gains (losses) on impaired loans	$ 16,298	$ 13,365
Total gains (losses) on foreclosed properties	1,472	1,472
Impaired loans
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets measured on a non-recurring basis, fair value	16,298	13,365
Impaired loans | Fair Value Measurements - Level 1 Inputs
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets measured on a non-recurring basis, fair value	0	0
Impaired loans | Fair Value Measurements - Level 2 Inputs
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets measured on a non-recurring basis, fair value	7,637	12,268
Impaired loans | Fair Value Measurements - Level 3 Inputs
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets measured on a non-recurring basis, fair value	8,661	1,097
Foreclosed properties | Fair Value Measurements - Level 1 Inputs
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets measured on a non-recurring basis, fair value	0	0
Foreclosed properties | Fair Value Measurements - Level 2 Inputs
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets measured on a non-recurring basis, fair value	1,472	1,472
Foreclosed properties | Fair Value Measurements - Level 3 Inputs
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets measured on a non-recurring basis, fair value	$ 0	$ 0

Fair Value Disclosures (Fair Va

Fair Value Disclosures (Fair Value by Balance Sheet Groupings) (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016	Sep. 30, 2016	Dec. 31, 2015
Financial assets:
Cash and cash equivalents, carrying amount	$ 73,196	$ 77,517	$ 68,764	$ 113,564
Securities available-for-sale, carrying amount	131,130	145,893
Securities held-to-maturity, carrying amount	38,873	38,612
Loans held for sale, carrying amount	0	1,111
Loans and leases receivable, net amount, carrying amount	1,446,790	1,429,763
Cash surrender value of life insurance, carrying amount	39,988	39,048
Federal Home Loan Bank and Federal Reserve Bank stock, carrying amount	5,083	2,131
Accrued interest receivable, carrying amount	4,722	4,677
Interest rate swaps - assets, carrying amount	1,380	352
Cash and cash equivalents, fair value	73,218	77,517
Securities available-for-sale, fair value	131,130	145,893
Held-to-maturity Securities, fair value	39,274	38,520
Loans Held-for-sale, Fair Value Disclosure	0	1,222
Loans and lease receivables, net, fair value	1,427,071	1,447,044
Cash surrender value of life insurance, fair value	39,988	39,048
Federal Home Loan Bank and Federal Reserve Bank stock, fair value	5,083	2,131
Accrued interest receivable, fair value	4,722	4,677
Interest rate swaps - assets, fair value	1,380	352
Financial liabilities:
Deposits, carrying amount	1,423,724	1,538,855
Federal Home Loan Bank and other borrowings, carrying amount	167,884	59,676
Junior subordinated notes, carrying amount	10,015	10,004
Accrued interest payable, carrying amount	2,317	1,765
Standby letters of credit, carrying amount	86	58
Deposits, fair value	1,424,275	1,539,413
Federal Home Loan Bank and other borrowings fair value	152,391	60,893
Junior subordinated notes, fair value	8,829	9,072
Accrued interest payable, fair value	2,317	1,765
Interest Rate Derivative Instruments Not Designated as Hedging Instruments, Liability at Fair Value	1,380	352
Interest rate swaps - liabilities, fair value	1,380	352
Standby letters of credit, fair value	86	58
Fair Value Measurements - Level 1 Inputs
Financial assets:
Cash and cash equivalents, fair value	56,487	55,622
Securities available-for-sale, fair value	0	0
Held-to-maturity Securities, fair value	0	0
Loans Held-for-sale, Fair Value Disclosure	0	0
Loans and lease receivables, net, fair value	0	0
Cash surrender value of life insurance, fair value	39,988	0
Federal Home Loan Bank and Federal Reserve Bank stock, fair value	0	0
Accrued interest receivable, fair value	4,722	4,677
Interest rate swaps - assets, fair value	0	0
Financial liabilities:
Deposits, fair value	1,032,379	1,063,720
Federal Home Loan Bank and other borrowings fair value	0	0
Junior subordinated notes, fair value	0	0
Accrued interest payable, fair value	2,317	1,765
Interest rate swaps - liabilities, fair value	0	0
Standby letters of credit, fair value	0	0
Fair Value Measurements - Level 2 Inputs
Financial assets:
Cash and cash equivalents, fair value	16,731	21,895
Securities available-for-sale, fair value	131,130	145,893
Held-to-maturity Securities, fair value	39,274	38,520
Loans Held-for-sale, Fair Value Disclosure	0	1,222
Loans and lease receivables, net, fair value	7,637	12,268
Cash surrender value of life insurance, fair value	0	39,048
Federal Home Loan Bank and Federal Reserve Bank stock, fair value	0	2,131
Accrued interest receivable, fair value	0	0
Interest rate swaps - assets, fair value	1,380	352
Financial liabilities:
Deposits, fair value	391,896	475,693
Federal Home Loan Bank and other borrowings fair value	152,391	60,893
Junior subordinated notes, fair value	0	0
Accrued interest payable, fair value	0	0
Interest rate swaps - liabilities, fair value	1,380	352
Standby letters of credit, fair value	0	0
Fair Value Measurements - Level 3 Inputs
Financial assets:
Cash and cash equivalents, fair value	0	0
Securities available-for-sale, fair value	0	0
Held-to-maturity Securities, fair value	0	0
Loans Held-for-sale, Fair Value Disclosure	0	0
Loans and lease receivables, net, fair value	1,419,434	1,434,776
Cash surrender value of life insurance, fair value	0	0
Federal Home Loan Bank and Federal Reserve Bank stock, fair value	5,083	0
Accrued interest receivable, fair value	0	0
Interest rate swaps - assets, fair value	0	0
Financial liabilities:
Deposits, fair value	0	0
Federal Home Loan Bank and other borrowings fair value	0	0
Junior subordinated notes, fair value	8,829	9,072
Accrued interest payable, fair value	0	0
Interest rate swaps - liabilities, fair value	0	0
Standby letters of credit, fair value	$ 86	$ 58

Fair Value Disclosures (Narrati

Fair Value Disclosures (Narrative Disclosures) (Details) - USD ($)	9 Months Ended	12 Months Ended
	Sep. 30, 2017	Dec. 31, 2016
Fair Value Inputs, Assets, Quantitative Information
Fair value, assets, level 1 to level 2 transfers	$ 0	$ 0
Fair value, assets, level 2 to Level 1 transfers	0	0
Fair value, assets, transfers into level 3	0	0
Fair value, assets, transfers out of level 3	0	0
Fair value, liabilities, level 1 to level 2 transfers	0	0
Fair value, liabilities, level 2 to level 1 transfers	0	0
Fair value, liabilities, transfers into level 3	0	0
Fair value, liabilities, transfers out of level 3	0	0
Commercial paper, at carrying value	13,400,000	20,300,000
Certificates of deposit, at carrying value	$ 3,300,000	1,600,000
Minimum
Fair Value Inputs, Assets, Quantitative Information
Quantification of unobservable inputs for level 3 values for impaired loans	13.00%
Maximum
Fair Value Inputs, Assets, Quantitative Information
Quantification of unobservable inputs for level 3 values for impaired loans	90.00%
Weighted Average
Fair Value Inputs, Assets, Quantitative Information
Quantification of unobservable inputs for level 3 values for impaired loans	20.00%
Impaired loans
Fair Value Inputs, Assets, Quantitative Information
Assets measured on a non-recurring basis, fair value	$ 16,298,000	13,365,000
Fair Value Measurements - Level 3 Inputs | Impaired loans
Fair Value Inputs, Assets, Quantitative Information
Assets measured on a non-recurring basis, fair value	8,661,000	1,097,000
Fair Value Measurements - Level 3 Inputs | Foreclosed properties
Fair Value Inputs, Assets, Quantitative Information
Assets measured on a non-recurring basis, fair value	$ 0	$ 0

Derivative Financial Instrume72

Derivative Financial Instruments (Location and Fair Value of Derivative Instruments) (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Dec. 31, 2016
Derivatives not designated as hedging instruments, fair value
Fair value of interest rate swaps	$ 1,380		$ 352
Interest rate swap contracts not designated as hedging instruments - liabilities, gross	$ 1,380		$ 352
Accrued interest receivable and other assets
Derivatives not designated as hedging instruments, fair value
Description of location of interest rate derivative instruments not designated as hedging instruments on balance sheet	Accrued interest receivable and other assets	Accrued interest receivable and other assets
Accrued interest payable and other liabilities
Derivatives not designated as hedging instruments, fair value
Description of location of interest rate derivative instruments not designated as hedging instruments on balance sheet	Accrued interest payable and other liabilities	Accrued interest payable and other liabilities

Derivative Financial Instrume73

Derivative Financial Instruments (Narrative Disclosures) (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2017	Dec. 31, 2016
Derivatives
Fair value of interest rate swaps	$ 1,380	$ 352
Interest rate swap contracts not designated as hedging instruments - liabilities, gross	1,380	$ 352
Derivative asset, fair value, amount offset against collateral	0
Derivative Instruments in Hedges, at Fair Value, Net	$ 0
Interest rate derivatives, line item on income statement for gain (loss)	other non-interest income
To commercial borrowers, corporation receives fixed rates and pays floating rates
Derivatives
Fair value of interest rate swaps	$ 1,400
To commercial borrowers, corporation receives fixed rates and pays floating rates | Minimum
Derivatives
Derivative, maturity date	Sep. 30, 2018
To commercial borrowers, corporation receives fixed rates and pays floating rates | Maximum
Derivatives
Derivative, maturity date	Mar. 15, 2034
To dealer countparties, corporation pays fixed rates and receives floating rates
Derivatives
Interest rate swap contracts not designated as hedging instruments - liabilities, gross	$ 1,400
Interest rate derivative instruments not designated as hedging instruments at fair value, net	$ 1,400
To dealer countparties, corporation pays fixed rates and receives floating rates | Minimum
Derivatives
Derivative, maturity date	Sep. 30, 2018
To dealer countparties, corporation pays fixed rates and receives floating rates | Maximum
Derivatives
Derivative, maturity date	Mar. 15, 2034
Not Designated as Hedging Instrument | To commercial borrowers, corporation receives fixed rates and pays floating rates
Derivatives
Notional value of interest rate swaps with various commercial borrowers	$ 52,300
Not Designated as Hedging Instrument | To dealer countparties, corporation pays fixed rates and receives floating rates
Derivatives
Notional value of interest rate swaps with various commercial borrowers	$ 52,300

Regulatory Capital (Regulatory

Regulatory Capital (Regulatory Capital Ratios) (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Compliance with Regulatory Capital Requirements under Banking Regulations
Total capital (to risk-weighted assets)	$ 209,495	$ 204,117
Total capital to risk-weighted assets	11.91%	11.74%
Total capital, Minimum Required for Capital Adequacy Purposes	$ 140,737	$ 139,101
Total capital to risk-weighted assets, Minimum Required for Capital Adequacy Purposes	8.00%	8.00%
Capital Required for Capital Adequacy Plus Capital Conservation Buffer	$ 162,727	$ 149,968
Capital Required for Capital Adequacy Plus Conservation Buffer to Risk Weighted Assets	9.25%	8.625%
Tier 1 capital (to risk-weighted assets)	$ 165,873	$ 160,964
Tier 1 capital to risk-weighted assets	9.43%	9.26%
Tier 1 capital, Minimum Required for Capital Adequacy Purposes	$ 105,553	$ 104,326
Tier 1 capital to risk-weighted assets, Minimum Required for Capital Adequacy Purposes	6.00%	6.00%
Tier One Risk Based Capital Required for Capital Adequacy Plus Capital Conservation Buffer	$ 127,543	$ 115,193
Tier One Risk Based Capital Required for Capital Adequacy Plus Conservation Buffer to Risk Weighted Assets	7.25%	6.625%
Common equity tier 1 capital	$ 155,858	$ 150,960
Common equity tier 1 capital to risk-weighted assets	8.86%	8.68%
Common equity tier 1 capital, Minimum Required for Capital Adequacy Purposes	$ 79,164	$ 78,244
Common equity tier 1 capital to risk-weighted assets, Minimum Required for Capital Adequacy Purposes	4.50%	4.50%
Common Equity Tier One Capital Required for Capital Adequacy Plus Capital Conservation Buffer	$ 101,155	$ 89,111
Common Equity Tier One Capital Required for Capital Adequacy Plus Conservation Buffer to Risk Weighted Assets	5.75%	5.125%
Tier 1 leverage capital (to adjusted assets)	$ 165,873	$ 160,964
Tier 1 leverage capital to average assets	9.39%	9.07%
Tier 1 leverage capital, Minimum Required for Capital Adequacy Purposes	$ 70,654	$ 70,985
Tier 1 leverage capital to average assets, Minimum Required for Capital Adequacy Purposes	4.00%	4.00%
Tier One Leverage Capital Required for Capital Adequacy Plus Capital Conservation Buffer	$ 70,654	$ 70,985
Tier One Leverage Capital Required for Capital Adequacy Plus Conservation Buffer to Risk Weighted Assets	4.00%	4.00%
First Business Bank
Compliance with Regulatory Capital Requirements under Banking Regulations
Total capital (to risk-weighted assets)	$ 205,877	$ 147,811
Total capital to risk-weighted assets	11.75%	11.55%
Total capital, Minimum Required for Capital Adequacy Purposes	$ 140,132	$ 102,362
Total capital to risk-weighted assets, Minimum Required for Capital Adequacy Purposes	8.00%	8.00%
Capital Required for Capital Adequacy Plus Capital Conservation Buffer	$ 162,027	$ 110,360
Capital Required for Capital Adequacy Plus Conservation Buffer to Risk Weighted Assets	9.25%	8.625%
Total capital, Minimum Required to be Well Capitalized Under Prompt Corrective Action Requirements	$ 175,164	$ 127,953
Total capital to risk-weighted assets, Minimum Required to be Well Capitalized Under Prompt Corrective Action Requirements	10.00%	10.00%
Tier 1 capital (to risk-weighted assets)	$ 185,954	$ 134,208
Tier 1 capital to risk-weighted assets	10.62%	10.49%
Tier 1 capital, Minimum Required for Capital Adequacy Purposes	$ 105,099	$ 76,772
Tier 1 capital to risk-weighted assets, Minimum Required for Capital Adequacy Purposes	6.00%	6.00%
Tier One Risk Based Capital Required for Capital Adequacy Plus Capital Conservation Buffer	$ 126,994	$ 84,769
Tier One Risk Based Capital Required for Capital Adequacy Plus Conservation Buffer to Risk Weighted Assets	7.25%	6.625%
Tier 1 capital, Minimum Required to be Well Capitalized Under Prompt Corrective Action Requirements	$ 140,132	$ 102,362
Tier 1 capital to risk weighted assets, Minimum Required to be Well Capitalized Under Prompt Corrective Action Requirements	8.00%	8.00%
Common equity tier 1 capital	$ 185,954	$ 134,208
Common equity tier 1 capital to risk-weighted assets	10.62%	10.49%
Common equity tier 1 capital, Minimum Required for Capital Adequacy Purposes	$ 78,824	$ 57,579
Common equity tier 1 capital to risk-weighted assets, Minimum Required for Capital Adequacy Purposes	4.50%	4.50%
Common Equity Tier One Capital Required for Capital Adequacy Plus Capital Conservation Buffer	$ 100,720	$ 65,576
Common Equity Tier One Capital Required for Capital Adequacy Plus Conservation Buffer to Risk Weighted Assets	5.75%	5.125%
Common equity tier 1 capital, Minimum Required to Be Well Capitalized Under Prompt Corrective Action Requirements	$ 113,857	$ 83,170
Common equity tier 1 capital to risk-weighted assets, Minimum Required to Be Well Capitalized Under Prompt Corrective Action Requirements	6.50%	6.50%
Tier 1 leverage capital (to adjusted assets)	$ 185,954	$ 134,208
Tier 1 leverage capital to average assets	10.56%	10.40%
Tier 1 leverage capital, Minimum Required for Capital Adequacy Purposes	$ 70,409	$ 51,600
Tier 1 leverage capital to average assets, Minimum Required for Capital Adequacy Purposes	4.00%	4.00%
Tier One Leverage Capital Required for Capital Adequacy Plus Capital Conservation Buffer	$ 70,409	$ 51,600
Tier One Leverage Capital Required for Capital Adequacy Plus Conservation Buffer to Risk Weighted Assets	4.00%	4.00%
Tier 1 leverage capital, Minimum Required to be Well Capitalized Under Prompt Corrective Action Requirements	$ 88,011	$ 64,500
Tier 1 leverage capital to average assets, Minimum Required to be Well Capitalized Under Prompt Corrective Action Requirements	5.00%	5.00%
First Business Bank - Milwaukee
Compliance with Regulatory Capital Requirements under Banking Regulations
Total capital (to risk-weighted assets)		$ 24,347
Total capital to risk-weighted assets		11.02%
Total capital, Minimum Required for Capital Adequacy Purposes		$ 17,680
Total capital to risk-weighted assets, Minimum Required for Capital Adequacy Purposes		8.00%
Capital Required for Capital Adequacy Plus Capital Conservation Buffer		$ 19,062
Capital Required for Capital Adequacy Plus Conservation Buffer to Risk Weighted Assets		8.625%
Total capital, Minimum Required to be Well Capitalized Under Prompt Corrective Action Requirements		$ 22,101
Total capital to risk-weighted assets, Minimum Required to be Well Capitalized Under Prompt Corrective Action Requirements		10.00%
Tier 1 capital (to risk-weighted assets)		$ 22,323
Tier 1 capital to risk-weighted assets		10.10%
Tier 1 capital, Minimum Required for Capital Adequacy Purposes		$ 13,260
Tier 1 capital to risk-weighted assets, Minimum Required for Capital Adequacy Purposes		6.00%
Tier One Risk Based Capital Required for Capital Adequacy Plus Capital Conservation Buffer		$ 14,642
Tier One Risk Based Capital Required for Capital Adequacy Plus Conservation Buffer to Risk Weighted Assets		6.625%
Tier 1 capital, Minimum Required to be Well Capitalized Under Prompt Corrective Action Requirements		$ 17,680
Tier 1 capital to risk weighted assets, Minimum Required to be Well Capitalized Under Prompt Corrective Action Requirements		8.00%
Common equity tier 1 capital		$ 22,323
Common equity tier 1 capital to risk-weighted assets		10.10%
Common equity tier 1 capital, Minimum Required for Capital Adequacy Purposes		$ 9,945
Common equity tier 1 capital to risk-weighted assets, Minimum Required for Capital Adequacy Purposes		4.50%
Common Equity Tier One Capital Required for Capital Adequacy Plus Capital Conservation Buffer		$ 11,327
Common Equity Tier One Capital Required for Capital Adequacy Plus Conservation Buffer to Risk Weighted Assets		5.125%
Common equity tier 1 capital, Minimum Required to Be Well Capitalized Under Prompt Corrective Action Requirements		$ 14,365
Common equity tier 1 capital to risk-weighted assets, Minimum Required to Be Well Capitalized Under Prompt Corrective Action Requirements		6.50%
Tier 1 leverage capital (to adjusted assets)		$ 22,323
Tier 1 leverage capital to average assets		9.15%
Tier 1 leverage capital, Minimum Required for Capital Adequacy Purposes		$ 9,758
Tier 1 leverage capital to average assets, Minimum Required for Capital Adequacy Purposes		4.00%
Tier One Leverage Capital Required for Capital Adequacy Plus Capital Conservation Buffer		$ 9,758
Tier One Leverage Capital Required for Capital Adequacy Plus Conservation Buffer to Risk Weighted Assets		4.00%
Tier 1 leverage capital, Minimum Required to be Well Capitalized Under Prompt Corrective Action Requirements		$ 12,198
Tier 1 leverage capital to average assets, Minimum Required to be Well Capitalized Under Prompt Corrective Action Requirements		5.00%
Alterra Bank
Compliance with Regulatory Capital Requirements under Banking Regulations
Total capital (to risk-weighted assets)		$ 31,699
Total capital to risk-weighted assets		13.27%
Total capital, Minimum Required for Capital Adequacy Purposes		$ 19,106
Total capital to risk-weighted assets, Minimum Required for Capital Adequacy Purposes		8.00%
Capital Required for Capital Adequacy Plus Capital Conservation Buffer		$ 20,599
Capital Required for Capital Adequacy Plus Conservation Buffer to Risk Weighted Assets		8.625%
Total capital, Minimum Required to be Well Capitalized Under Prompt Corrective Action Requirements		$ 23,882
Total capital to risk-weighted assets, Minimum Required to be Well Capitalized Under Prompt Corrective Action Requirements		10.00%
Tier 1 capital (to risk-weighted assets)		$ 28,685
Tier 1 capital to risk-weighted assets		12.01%
Tier 1 capital, Minimum Required for Capital Adequacy Purposes		$ 14,329
Tier 1 capital to risk-weighted assets, Minimum Required for Capital Adequacy Purposes		6.00%
Tier One Risk Based Capital Required for Capital Adequacy Plus Capital Conservation Buffer		$ 15,822
Tier One Risk Based Capital Required for Capital Adequacy Plus Conservation Buffer to Risk Weighted Assets		6.625%
Tier 1 capital, Minimum Required to be Well Capitalized Under Prompt Corrective Action Requirements		$ 19,106
Tier 1 capital to risk weighted assets, Minimum Required to be Well Capitalized Under Prompt Corrective Action Requirements		8.00%
Common equity tier 1 capital		$ 28,685
Common equity tier 1 capital to risk-weighted assets		12.01%
Common equity tier 1 capital, Minimum Required for Capital Adequacy Purposes		$ 10,747
Common equity tier 1 capital to risk-weighted assets, Minimum Required for Capital Adequacy Purposes		4.50%
Common Equity Tier One Capital Required for Capital Adequacy Plus Capital Conservation Buffer		$ 12,240
Common Equity Tier One Capital Required for Capital Adequacy Plus Conservation Buffer to Risk Weighted Assets		5.125%
Common equity tier 1 capital, Minimum Required to Be Well Capitalized Under Prompt Corrective Action Requirements		$ 15,524
Common equity tier 1 capital to risk-weighted assets, Minimum Required to Be Well Capitalized Under Prompt Corrective Action Requirements		6.50%
Tier 1 leverage capital (to adjusted assets)		$ 28,685
Tier 1 leverage capital to average assets		10.58%
Tier 1 leverage capital, Minimum Required for Capital Adequacy Purposes		$ 10,842
Tier 1 leverage capital to average assets, Minimum Required for Capital Adequacy Purposes		4.00%
Tier One Leverage Capital Required for Capital Adequacy Plus Capital Conservation Buffer		$ 10,842
Tier One Leverage Capital Required for Capital Adequacy Plus Conservation Buffer to Risk Weighted Assets		4.00%
Tier 1 leverage capital, Minimum Required to be Well Capitalized Under Prompt Corrective Action Requirements		$ 13,552
Tier 1 leverage capital to average assets, Minimum Required to be Well Capitalized Under Prompt Corrective Action Requirements		5.00%

Regulatory Capital (Narrative D

Regulatory Capital (Narrative Disclosures) (Details)	9 Months Ended
	Sep. 30, 2017
Regulatory Capital Requirements [Abstract]
Description of possible effects of noncompliance or less than adequately capitalized	Failure to meet minimum capital requirements can result in certain mandatory, and possibly additional discretionary actions on the part of regulators, that if undertaken, could have a direct material effect on the Bank’s assets, liabilities and certain off-balance-sheet items as calculated under regulatory practices.
Capital Conservation Buffer, Initial Phase In Percent	0.625%
Capital Conservation Buffer, Yearly Phase-In Percent Increase	0.625%
Capital Conservation Buffer, Fully Phased-In Percent	2.50%