First Business Financial Services (FBIZ) 10-Q 1 May 15 2015 Q1 Quarterly report Financial data

Document_and_Entity_Informatio

Document and Entity Information	3 Months Ended
	Mar. 31, 2015	Apr. 30, 2015
Document and Entity Information [Abstract]
Entity Registrant Name	First Business Financial Services, Inc.
Entity Central Index Key	1521951
Current Fiscal Year End Date	-19
Document Type	10-Q
Document Period End Date	31-Mar-15
Document Fiscal Year Focus	2015
Document Fiscal Period Focus	Q1
Amendment Flag	FALSE
Entity Filer Category	Accelerated Filer
Entity Common Stock, Shares Outstanding		4,335,086

Consolidated_Balance_Sheets

Consolidated Balance Sheets (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Thousands, unless otherwise specified
Assets
Cash and due from banks	$14,263	$14,881
Short-term investments	127,624	88,356
Cash and cash equivalents	141,887	103,237
Securities available-for-sale, at fair value	142,951	144,698
Securities held-to-maturity, at amortized cost	40,599	41,563
Loans held-for-sale	2,396	1,340
Loans and leases receivable, net of allowance for loan and lease losses of $14,694 and $14,329, respectively	1,279,846	1,265,098
Premises and equipment, net	3,883	3,943
Foreclosed properties	1,566	1,693
Cash surrender value of bank-owned life insurance	27,548	27,314
Investment in Federal Home Loan Bank and Federal Reserve Bank stock, at cost	2,798	2,340
Accrued interest receivable and other assets	25,192	26,217
Intangible Assets, Net (Including Goodwill)	12,011	11,944
Total assets	1,680,677	1,629,387
Liabilities and Stockholders’ Equity
Deposits	1,485,801	1,438,268
Federal Home Loan Bank and other borrowings	34,448	33,994
Junior subordinated notes	10,315	10,315
Accrued interest payable and other liabilities	8,424	9,062
Total liabilities	1,538,988	1,491,639
Commitments and contingencies	0	0
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, 4,546,532 and 4,537,426 shares issued, 4,336,161 and 4,335,927 shares outstanding at March 31, 2015 and December 31, 2014, respectively	46	45
Additional paid-in capital	75,571	74,963
Retained earnings	71,124	67,886
Accumulated Other Comprehensive Income (Loss), Debt Securities Adjustment, Net of Tax	726	218
Treasury stock (210,371 and 201,499 shares at March 31, 2015 and December 31, 2014, respectively), at cost	-5,778	-5,364
Total stockholders’ equity	141,689	137,748
Total liabilities and stockholders’ equity	$1,680,677	$1,629,387

Consolidated_Balance_Sheets_Pa

Consolidated Balance Sheets (Parenthetical) (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Thousands, except Share data, unless otherwise specified
Consolidated Balance Sheets - Parenthetical [Abstract]
Allowance for loan and lease losses	$14,694	$14,329
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	4,546,532	4,537,426
Common stock, shares outstanding	4,336,161	4,335,927
Treasury stock, shares	210,371	201,499

Consolidated_Statements_of_Inc

Consolidated Statements of Income (Unaudited) (USD $)	3 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Interest income:
Loans and leases	$17,325	$12,475
Securities income	776	867
Short-term investments	115	60
Total interest income	18,216	13,402
Interest expense:
Deposits	2,569	2,168
Notes payable and other borrowings	443	159
Junior subordinated notes	274	274
Total interest expense	3,286	2,601
Net interest income	14,930	10,801
Provision for loan and lease losses	684	180
Net interest income after provision for loan and lease losses	14,246	10,621
Non-interest income:
Trust and investment services fee income	1,207	1,068
Service charges on deposits	696	567
Loan fees	502	390
Increase in cash surrender value of bank-owned life insurance	234	206
Gain on Sale of Loans and Leases	653	0
Other	556	90
Total non-interest income	3,848	2,321
Non-interest expense:
Compensation	7,354	5,057
Occupancy	500	324
Professional fees	989	632
Data processing	530	415
Marketing	642	347
Equipment	308	130
FDIC insurance	213	190
Collateral liquidation costs	302	159
Net gain on foreclosed properties	-16	0
Other	910	598
Total non-interest expense	11,732	7,852
Income before income tax expense	6,362	5,090
Income tax expense	2,170	1,753
Net income	$4,192	$3,337
Earnings per common share:
Basic	$0.97	$0.85
Diluted	$0.97	$0.84
Dividends declared per share	$0.22	$0.21

Consolidated_Statements_of_Com

Consolidated Statements of Comprehensive Income (Unaudited) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Statement of Comprehensive Income [Abstract]
Net income	$4,192	$3,337
Other comprehensive income, before tax
Unrealized securities gains arising during the period	765	349
Amortization of net unrealized losses transferred during the period	63	0
Income tax expense	-320	-135
Comprehensive income	$4,700	$3,551

Consolidated_Statements_of_Cha

Consolidated Statements of Changes in Stockholders' Equity (Unaudited) (USD $)	Total	Common stock	Additional paid-in capital	Retained earnings	Accumulated other comprehensive income (loss)	Treasury stock
In Thousands, except Share data
Beginning balance at Dec. 31, 2013	$109,275	$41	$56,002	$57,143	($342)	($3,569)
Common stock shares outstanding at Dec. 31, 2013		3,943,997
Net income	3,337			3,337
Other comprehensive income	214				214
Share-based compensation - restricted shares, shares issued		996
Share-based compensation - restricted shares	193		193
Share-based compensation - tax benefits	12		12
Cash dividends ($0.21 per share during 2014 and $.22 per share during 2015)	-828			-828
Treasury stock purchased, shares		-198
Treasury stock purchased	-8					-8
Ending balance at Mar. 31, 2014	112,195	41	56,207	59,652	-128	-3,577
Common stock shares outstanding at Mar. 31, 2014		3,944,795
Beginning balance at Dec. 31, 2014	137,748	45	74,963	67,886	218	-5,364
Common stock shares outstanding at Dec. 31, 2014	4,335,927	4,335,927
Net income	4,192			4,192
Other comprehensive income	508				508
Exercise of stock options, shares	12,000	12,000
Exercise of stock options	301	1	300
Share-based compensation - restricted shares, shares issued		-2,894
Share-based compensation - restricted shares	234		234
Share-based compensation - tax benefits	74		74
Cash dividends ($0.21 per share during 2014 and $.22 per share during 2015)	-954			-954
Treasury stock purchased, shares		-8,872
Treasury stock purchased	-414					-414
Ending balance at Mar. 31, 2015	$141,689	$46	$75,571	$71,124	$726	($5,778)
Common stock shares outstanding at Mar. 31, 2015	4,336,161	4,336,161

Consolidated_Statements_of_Cha1

Consolidated Statements of Changes in Stockholders' Equity (Parenthetical) (USD $)	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Common stock, cash dividends, per share, declared	$0.22	$0.21
Retained earnings
Common stock, cash dividends, per share, declared	$0.22	$0.21

Consolidated_Statements_of_Cas

Consolidated Statements of Cash Flows (Unaudited) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Operating activities
Net income	$4,192	$3,337
Adjustments to reconcile net income to net cash provided by operating activities:
Deferred income taxes, net	648	-71
Provision for loan and lease losses	684	180
Depreciation, amortization and accretion, net	-660	433
Share-based compensation	234	193
Increase in cash surrender value of bank-owned life insurance	-234	-206
Origination of loans for sale	15,499	0
Sale of loans originated for sale	15,096	0
Gain on sale of loans originated for sale	653	0
Net gain on foreclosed properties, including impairment valuation	-16	0
Excess tax benefit from share-based compensation	-74	-12
Increase in accrued interest receivable and other assets	-394	-262
Decrease in accrued interest payable and other liabilities	-562	-636
Net cash (used) provided by operating activities	2,762	2,956
Investing activities
Proceeds from maturities, redemptions and paydowns of available-for-sale securities	10,845	13,300
Proceeds from maturities of held-to-maturity securities	984	0
Purchases of available-for-sale securities	-8,636	-18,706
Proceeds from sale of foreclosed properties	143	0
Net increase in loans and leases	-14,413	-4,348
Distributions from limited partnerships	332	0
Investment in FHLB and FRB Stock	-458	-124
Proceeds from sale of FHLB Stock	0	124
Purchases of leasehold improvements and equipment, net	-119	-113
Net cash used in investing activities	-11,322	-9,867
Financing activities
Net increase in deposits	47,704	6,845
Net increase in short-term borrowed funds	500	0
Repayment of subordinated notes payable	0	-4,000
Excess tax benefit from share-based compensation	74	12
Cash dividends paid	-954	-828
Exercise of stock options	300	0
Purchase of treasury stock	-414	-8
Net cash provided by financing activities	47,210	2,021
Net increase (decrease) in cash and cash equivalents	38,650	-4,890
Cash and cash equivalents at the beginning of the period	103,237	81,286
Cash and cash equivalents at the end of the period	141,887	76,396
Supplementary cash flow information
Interest paid on deposits and borrowings	3,117	2,102
Income taxes paid	$525	$628

Nature_of_Operations_and_Summa

Nature of Operations and Summary of Significant Accounting Policies	3 Months Ended
	Mar. 31, 2015
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”), its wholly-owned subsidiaries, First Business Bank (“FBB”), First Business Bank – Milwaukee (“FBB – Milwaukee”) and Alterra Bank (“Alterra”) have been prepared in accordance with U.S. generally accepted accounting principles (“GAAP”). FBB, FBB – Milwaukee and Alterra are sometimes referred to together as the “Banks.” FBB operates as a commercial banking institution in the Madison, Wisconsin market, consisting primarily of Dane County and the surrounding areas, with loan production offices in Oshkosh, Appleton, and Green Bay, Wisconsin. FBB also offers trust and investment services through First Business Trust & Investments (“FBTI”), a division of FBB. FBB – Milwaukee operates as a commercial banking institution in the Milwaukee, Wisconsin market, consisting primarily of Waukesha County and the surrounding areas, with a loan production office in Kenosha, Wisconsin. Alterra operates as a commercial banking institution in the Kansas City market and the surrounding areas. The Banks provide a full range of financial services to businesses, business owners, executives, professionals and high net worth individuals. The Banks are subject to competition from other financial institutions and service providers and are 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”), Rimrock Road Investment Fund, LLC (“Rimrock Road”) and BOC Investment, LLC (“BOC”). FMIC is located in and was formed under the laws of the state of Nevada. FBB-Milwaukee has one subsidiary, FBB – Milwaukee Real Estate, LLC (“FBBMRE”).
	Basis of Presentation. The accompanying unaudited Consolidated Financial Statements were prepared in accordance with GAAP and with 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, 2014. The unaudited Consolidated Financial Statements include the accounts of the Corporation and its wholly-owned subsidiaries. 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. All significant intercompany balances and transactions have been eliminated in consolidation.
	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 foreclosed property, lease residuals, property under operating leases, securities, income taxes and the level of the allowance for loan and lease losses. The results of operations for the three-month period ended March 31, 2015 are not necessarily indicative of results that may be expected for any other interim period or the entire fiscal year ending December 31, 2015. 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 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, 2014 except as described further below in this Note 1.
	Recent Accounting Pronouncements.
	In January 2014, the FASB issued ASU No. 2014-01, “ Investments - Equity Method Joint Ventures (Topic 323): Accounting for Investments in Qualified Affordable Housing Projects.” This ASU allows investors in Low Income Housing Tax Credit (LIHTC) programs that meet specified conditions to present the net tax benefits (net of the amortization of the cost of the investment) within income tax expense. The cost of the investments that meet the specified conditions will be amortized in proportion to (and over the same period as) the total expected tax benefits, including the tax credits and other tax benefits, as they are realized on the tax return. The ASU is effective for interim and annual periods beginning after December 15, 2014. The ASU is required to be applied retrospectively, if investors elect the proportional amortization method. However, if investors have existing LIHTC investments accounted for under the effective-yield method at adoption, they may continue to apply that method for those existing investments. The Corporation adopted the accounting standard in the first quarter of 2015 with no impact on its financial position or results of operations.
	In January 2014, the FASB issued ASU No. 2014-04, “Receivables - Troubled Debt Restructurings by Creditors (Subtopic 310-40): Reclassification of Residential Real Estate Collateralized Consumer Mortgage Loans upon Foreclosure (a consensus of the FASB Emerging Issues Task Force).” This ASU clarifies that an “in substance repossession or foreclosure” occurs, and a creditor is considered to have received physical possession of residential real estate property collateralizing a consumer mortgage loan, upon either (1) the creditor obtaining legal title to the residential real estate property upon completion of a foreclosure or (2) the borrower conveying all interest in the residential real estate property to the creditor to satisfy that loan through completion of a deed in lieu of foreclosure or through a similar agreement. In addition, the amendments require interim and annual disclosure of both the amount of foreclosed residential real estate property held by the creditor and the recorded investment in consumer mortgage loans collateralized by residential real estate property that are in the process of foreclosure in accordance with local requirements of the applicable jurisdiction. This amendment is effective for fiscal years, and interim periods within those years, beginning after December 15, 2014. An entity can elect to adopt the amendments using either a modified retrospective method or a prospective transition method. Early adoption is permitted. The Corporation adopted the accounting standard in the first quarter of 2015 with no impact on its financial position or results of operations.
	In August 2014, the FASB issued ASU 2014-14, “Receivables - Troubled Debt Restructuring by Creditors (Subtopic 310-40): Classification of Certain Government-Guaranteed Mortgage Loans upon Foreclosure.” This ASU will require creditors to derecognize certain foreclosed government-guaranteed mortgage loans and to recognize a separate other receivable that is measured at the amount the creditor expects to recover from the guarantor, and to treat the guarantee and the receivable as a single unit of account. The ASU is effective for interim and annual periods beginning after December 15, 2014. An entity can elect a prospective or a modified retrospective transition method, but must use the same transition method that it elected under FASB ASU No. 2014-04,  Early adoption is permitted. The Corporation adopted the accounting standard in the first quarter of 2015 with no impact on its financial position or results of operations.
	In May 2014, the FASB issued ASU No. 2014-09, “Revenue from Contracts with Customers (Topic 666).” 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 in exchange for those goods or services. The ASU is effective for interim and annual reporting periods beginning after December 15, 2016. 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 the Corporation’s consolidated financial position or results of operations.
	In June 2014, the FASB issued ASU No. 2014-12, “Accounting for Share-Based Payments When the Terms of an Award Provide That a Performance Target Could Be Achieved after the Requisite Service Period.” This ASU requires a reporting entity to treat a performance target that affects vesting and that could be achieved after the requisite service period as a performance condition. A reporting entity should apply FASB ASC Topic 718, Compensation-Stock Compensation, to awards with performance conditions that affect vesting. For all entities, ASU 2014-12 is effective for annual periods, and interim periods within those annual periods, beginning after December 15, 2015. Early adoption is permitted. ASU 2014-12 may be adopted either prospectively for share-based payment awards granted or modified on or after the effective date, or retrospectively, using a modified retrospective approach. The modified retrospective approach would apply to share-based payment awards outstanding as of the beginning of the earliest annual period presented in the financial statements on adoption, and to all new or modified awards thereafter. While the Corporation does not have any performance-based awards outstanding as of the reporting date, the Corporation’s equity incentive plan does allow for such awards. 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 the Corporation’s consolidated financial position or results of operations.
	In August 2014, the FASB issued ASU 2014-15, “Disclosure of Uncertainties about an Entity’s Ability to Continue as a Going Concern.” This ASU describes how an entity should assess its ability to meet obligations and sets rules for how this information should be disclosed in the financial statements. The standard provides accounting guidance that will be used along with existing auditing standards. The ASU is effective for interim and annual periods beginning after December 15, 2016. Early application 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 the Corporation’s consolidated financial position or results of operations.
	In February 2015, the FASB issued ASU 2015-02, “Consolidation (Topic 810): Amendments to the Consolidation Analysis.” This ASU changes the way reporting enterprises evaluate whether (a) they should consolidate limited partnerships and similar entities, (b) fees paid to a decision maker or service provider are variable interests in a variable interest entity (VIE), and (c) variable interests in a VIE held by related parties of the reporting enterprise require the reporting enterprise to consolidate the VIE. It also eliminates the VIE consolidation model based on majority exposure to variability that applied to certain investment companies and similar entities. The new guidance excludes money market funds that are required to comply with Rule 2a-7 of the Investment Company Act of 1940 and similar entities from the U.S. GAAP consolidation requirements. The new consolidation guidance is effective for public business entities for annual and interim periods in fiscal years beginning after December 15, 2015. At the effective date, all previous consolidation analysis that the guidance affects must be reconsidered. This includes the consolidation analysis for all VIEs and for all limited partnerships and similar entities that previously were consolidated by the general partner even though the entities were not VIEs. Early adoption is permitted, including early adoption in an interim period. If a reporting enterprise chooses to early adopt in an interim period, adjustments resulting from the revised consolidation analysis must be reflected as of the beginning of the fiscal year that includes that interim period. 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 the Corporation’s consolidated financial position or results of operations.

Earnings_Per_Common_Share

Earnings Per Common Share	3 Months Ended
	Mar. 31, 2015
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 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 average anti-dilutive employee share-based awards for the three-month periods ended March 31, 2015 and 2014.
		For the Three Months Ended March 31,
		2015		2014
		(Dollars in Thousands, Except Per Share Data)
	Basic earnings per common share
	Net income	$	4,192	$	3,337
	Less: earnings allocated to participating securities	73		72
	Basic earnings allocated to common shareholders	$	4,119	$	3,265
	Weighted-average common shares outstanding, excluding participating securities	4,260,249		3,859,503
	Basic earnings per common share	$	0.97	$	0.85
	Diluted earnings per common share
	Earnings allocated to common shareholders	$	4,119	$	3,265
	Reallocation of undistributed earnings	—		—
	Diluted earnings allocated to common shareholders	$	4,119	$	3,265
	Weighted-average common shares outstanding, excluding participating securities	4,260,249		3,859,503
	Dilutive effect of share-based awards	2,265		21,058
	Weighted-average diluted common shares outstanding, excluding participating securities	4,262,514		3,880,561
	Diluted earnings per common share	$	0.97	$	0.84

ShareBased_Compensation

Share-Based Compensation	3 Months Ended
	Mar. 31, 2015
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 (together, “Stock Options”), restricted stock, restricted stock units, dividend equivalent units, and any other type of award permitted by the Plan. As of March 31, 2015, 177,663 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 treasury for shares delivered under the Plan.
	Stock Options
	The Corporation may grant Stock Options to senior executives and other employees under the Plan. Stock Options generally have an exercise price that is equal to the fair value of the common shares on the date the option is awarded. Stock Options granted under the Plan are subject to graded vesting, generally ranging from 4 years to 8 years, and have a contractual term of 10 years. For any new awards issued, compensation expense is recognized over the requisite service period for the entire award on a straight-line basis. No Stock Options have been granted since the Corporation became a reporting company under the Securities Exchange Act of 1934, as amended, and no Stock Options have been modified, repurchased or canceled since such time. For that reason, no stock-based compensation related to Stock Options was recognized in the Consolidated Financial Statements for the three months ended March 31, 2015 and 2014. As of March 31, 2015, all Stock Options granted and not previously forfeited have vested. The benefits of tax deductions as a result of disqualifying dispositions upon exercise of stock options are recognized as a financing cash flow.
	Stock Option activity for the year ended December 31, 2014 and three months ended March 31, 2015 was as follows:
			Options		Weighted		Weighted
					Average		Average
					Exercise Price		Remaining
							Contractual
							Life (Years)
	Outstanding at December 31, 2013		51,000		$	24.24	0.88
	Granted		—		—
	Exercised		(39,000	)	24
	Expired		—		—
	Forfeited		—		—
	Outstanding at December 31, 2014		12,000		$	25	0.13
	Exercisable at December 31, 2014		12,000		$	25	0.13
	Outstanding as of December 31, 2014		12,000		$	25	0.13
	Granted		—		—
	Exercised		(12,000	)	25
	Expired		—		—
	Forfeited		—		—
	Outstanding as of March 31, 2015		—		$	—
	Exercisable at March 31, 2015		—		$	—
	Restricted Stock
	Under the Plan, the Corporation may grant restricted shares to plan participants, subject to forfeiture upon the occurrence of certain events until the dates specified in the participant’s award agreement. While the restricted shares are subject to forfeiture, the participant may exercise full voting rights and will receive all dividends and other distributions paid with respect to the restricted shares. The restricted shares granted under the Plan are subject to graded vesting. 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 share awards, the benefit of tax deductions in excess of recognized compensation expense is recognized as a financing cash flow activity.
	Restricted share activity for the year ended December 31, 2014 and the three months ended March 31, 2015 was as follows:
			Number of		Weighted Average
			Restricted Shares		Grant-Date
					Fair Value
	Nonvested balance as of December 31, 2013		84,709		$	23.1
	Granted		32,261		44.98
	Vested		(39,471	)	19.71
	Forfeited		—		—
	Nonvested balance as of December 31, 2014		77,499		33.94
	Granted		500		46.6
	Vested		(373	)	40.29
	Forfeited		(3,394	)	26.44
	Nonvested balance as of March 31, 2015		74,232		$	34.33
	As of March 31, 2015, $2.0 million of deferred compensation expense was included in additional paid-in capital in the Consolidated Balance Sheets related to unvested restricted shares which the Corporation expects to recognize over a weighted-average period of approximately three years. As of March 31, 2015, all restricted shares that vested were delivered.
	For the three months ended March 31, 2015 and 2014, share-based compensation expense related to restricted stock included in the Consolidated Statements of Income was as follows:
		For the Three Months Ended March 31,
		2015			2014
		(Dollars in Thousands)
	Share-based compensation expense	$	234		$	193

Securities

Securities	3 Months Ended
	Mar. 31, 2015
Investments, Debt and Equity Securities [Abstract]
Securities	Securities
	The amortized cost and estimated 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 March 31, 2015
		Amortized cost		Gross		Gross			Estimated
				unrealized		unrealized			fair value
				holding gains		holding losses
		(In Thousands)
	Available-for-sale:
	U.S. Government agency obligations - government-sponsored enterprises	$	8,046	$	29	$	(28	)	$	8,047
	Municipal obligations	569		9		—			578
	Asset-backed securities	1,494		—		—			1,494
	Collateralized mortgage obligations - government issued	61,418		1,338		(87		)	62,669
	Collateralized mortgage obligations - government-sponsored enterprises	69,597		631		(65		)	70,163
		$	141,124	$	2,007	$	(180	)	$	142,951
		As of December 31, 2014
		Amortized cost		Gross		Gross			Estimated
				unrealized		unrealized			fair value
				holding gains		holding losses
		(In Thousands)
	Available-for-sale:
	U.S. Government agency obligations - government-sponsored enterprises	$	9,046	$	—	$	(81	)	$	8,965
	Municipal obligations	573		5		—			578
	Asset-backed securities	1,514		$	—	(4		)	1,510
	Collateralized mortgage obligations - government issued	67,740		1,390		(256		)	68,874
	Collateralized mortgage obligations - government-sponsored enterprises	64,763		234		(226		)	64,771
		$	143,636	$	1,629	$	(567	)	$	144,698
	The amortized cost and estimated fair value of securities held-to-maturity and the corresponding amounts of gross unrecognized gains and losses were as follows:
		As of March 31, 2015
		Amortized cost		Gross		Gross			Estimated
				unrecognized		unrecognized			fair value
				holding gains		holding losses
		(In Thousands)
	Held-to-maturity:
	U.S. Government agency obligations - government-sponsored enterprises	$	1,491	$	6	$	(1	)	$	1,496
	Municipal obligations	16,075		231		(7		)	16,299
	Collateralized mortgage obligations - government issued	13,889		185		—			14,074
	Collateralized mortgage obligations - government-sponsored enterprises	9,144		134		—			9,278
		$	40,599	$	556	$	(8	)	$	41,147
		As of December 31, 2014
		Amortized cost		Gross		Gross			Estimated
				unrecognized		unrecognized			fair value
				holding gains		holding losses
		(In Thousands)
	Held-to-maturity:
	U.S. Government agency obligations - government-sponsored enterprises	$	1,490	$	—	$	(17	)	$	1,473
	Municipal obligations	16,088		85		(18		)	16,155
	Collateralized mortgage obligations - government issued	14,505		57		(31		)	14,531
	Collateralized mortgage obligations - government-sponsored enterprises	9,480		74		(19		)	9,535
		$	41,563	$	216	$	(85	)	$	41,694
	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”). Collateralized mortgage obligations - government issued represent securities guaranteed by the Government National Mortgage Association (“GNMA”). Collateralized mortgage obligations - government-sponsored enterprises include securities guaranteed by the FHLMC and the FNMA. Asset-backed securities represent securities issued by the Student Loan Marketing Association (“SLMA”) and are 97% guaranteed by the U.S. government. 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. There were no sales of securities available-for-sale for the three months ended March 31, 2015 and 2014.
	At March 31, 2015 and December 31, 2014, securities with a fair value of $30.7 million and $32.7 million, respectively, were pledged to secure interest rate swap contracts, outstanding Federal Home Loan Bank (“FHLB”) advances, if any, and additional FHLB availability.
	The amortized cost and estimated fair value of securities by contractual maturity at March 31, 2015 are shown below. Actual maturities may differ from contractual maturities because issuers have the right to call or prepay certain obligations without call or prepayment penalties.
		Available-for-Sale				Held-to-Maturity
		Amortized cost		Estimated		Amortized cost			Estimated
				fair value					fair value
		(In Thousands)
	Due in one year or less	$	—	$	—	$	—		$	—
	Due in one year through five years	9,341		9,375		3,261			3,272
	Due in five through ten years	75,842		76,931		13,330			13,532
	Due in over ten years	55,941		56,645		24,008			24,343
		$	141,124	$	142,951	$	40,599		$	41,147
	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 March 31, 2015 and December 31, 2014. At March 31, 2015 and December 31, 2014, the Corporation held 23 and 59 available-for-sale securities that were in an unrealized loss position, respectively. Such securities have not experienced credit rating downgrades; however, they have primarily declined in value due to the current interest rate environment. At March 31, 2015, the Corporation held 19 available-for-sale securities that had been in a continuous unrealized loss position for twelve months or greater.
	The Corporation also 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. It is expected that the Corporation will recover the entire amortized cost basis of each security based upon an evaluation of the present value of the expected future cash flows. Accordingly, no other than temporary impairment was recorded in the Consolidated Statements of Income for the three months ended March 31, 2015 and 2014.
	A summary of unrealized loss information for securities available-for-sale, categorized by security type follows:
	As of March 31, 2015
	Less than 12 months				12 months or longer					Total
	Fair value		Unrealized		Fair value			Unrealized		Fair value		Unrealized
			losses					losses				losses
	(In Thousands)
Available-for-sale:
U.S. Government agency obligations - government-sponsored enterprises	$	—	$	—	$	3,722		$	28	$	3,722	$	28
Asset-backed securities	—		—		1,494			—		1,494		—
Collateralized mortgage obligations - government issued	—		—		8,669			87		8,669		87
Collateralized mortgage obligations - government-sponsored enterprises	4,853		5		4,859			60		9,712		65
	$	4,853	$	5	$	18,744		$	175	$	23,597	$	180
	As of December 31, 2014
	Less than 12 months				12 months or longer					Total
	Fair value		Unrealized		Fair value			Unrealized		Fair value		Unrealized
			losses					losses				losses
	(In Thousands)
Available-for-sale:
U.S. Government agency obligations - government-sponsored enterprises	$	3,486	$	12	$	5,479		$	69	$	8,965	$	81
Asset-backed securities	—		$	—	1,510			4		1,510		4
Collateralized mortgage obligations - government issued	9,201		50		9,536			206		18,737		256
Collateralized mortgage obligations - government-sponsored enterprises	29,498		97		4,993			129		34,491		226
	$	42,185	$	159	$	21,518		$	408	$	63,703	$	567
The tables below show the Corporation’s gross unrecognized 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 March 31, 2015 and December 31, 2014. At March 31, 2015 and December 31, 2014, the Corporation held 8 and 57 held-to-maturity securities that were in an unrecognized loss position, respectively. Such securities have not experienced credit rating downgrades; however, they have primarily declined in value due to the current interest rate environment. There were no held-to-maturity securities that had been in a continuous unrecognized loss position for twelve months or greater as of March 31, 2015. It is expected that the Corporation will recover the entire amortized cost basis of each held-to-maturity security based upon an evaluation of the present value of the expected future cash flows. Accordingly, no other than temporary impairment was recorded in the Consolidated Statements of Income for the three months ended March 31, 2015.
A summary of unrecognized loss information for securities held-to-maturity, categorized by security type follows:
	As of March 31, 2015
	Less than 12 months				12 months or longer					Total
	Fair value		Unrecognized		Fair value			Unrecognized		Fair value		Unrecognized
			losses					losses				losses
	(In Thousands)
Held-to-maturity:
U.S. Government agency obligations - government-sponsored enterprises	$	997	$	1	$	—		$	—	$	997	$	1
Municipal obligations	1,256		7		—			—		1,256		7
	$	2,253	$	8	$	—		$	—	$	2,253	$	8
	As of December 31, 2014
	Less than 12 months				12 months or longer					Total
	Fair value		Unrecognized		Fair value			Unrecognized		Fair value		Unrecognized
			losses					losses				losses
	(In Thousands)
Held-to-maturity:
U.S. Government agency obligations - government-sponsored enterprises	$	1,490	$	17	$	—		$	—	$	1,490	$	17
Municipal obligations	2,222		18		—			—		2,222		18
Collateralized mortgage obligations - government issued	3,247		31		—			—		3,247		31
Collateralized mortgage obligations - government-sponsored enterprises	3,076		19		—			—		3,076		19
	$	10,035	$	85	$	—		$	—	$	10,035	$	85

Loan_and_Lease_Receivables_Imp

Loan and Lease Receivables, Impaired Loans and Leases and Allowance for Loan and Lease Losses	3 Months Ended
	Mar. 31, 2015
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:
			March 31,				December 31,
			2015				2014
			(In Thousands)
	Commercial real estate
	Commercial real estate — owner occupied		$	163,982			$	163,884
	Commercial real estate — non-owner occupied		404,931				417,962
	Construction and land development		121,211				121,160
	Multi-family		84,163				72,578
	1-4 family (1)		40,159				36,182
	Total commercial real estate		814,446				811,766
	Commercial and industrial (2)		426,413				416,654
	Direct financing leases, net		31,644				34,165
	Consumer and other
	Home equity and second mortgages		9,032				7,866
	Other		16,532				11,341
	Total consumer and other		25,564				19,207
	Total gross loans and leases receivable		1,298,067				1,281,792
	Less:
	Allowance for loan and lease losses		14,694				14,329
	Deferred loan fees		1,131				1,025
	Loans and leases receivable, net		$	1,282,242			$	1,266,438
	-1	Includes residential real estate loans held for sale totaling $1.3 million as of March 31, 2015 and December 31, 2014.
	-2	Includes guaranteed portion of SBA loans held for sale totaling $1.1 million as of March 31, 2015.
	Loans transferred to third parties consist of the guaranteed portion of SBA loans as well as participation interests in other originated loans. The total principal amount of loans transfered during the three months ended March 31, 2015 and 2014 was $15.8 million and $6.2 million, respectively. Each of the transfers of these financial assets met the qualifications for sale accounting, including the requirements specific to loan participations, and therefore all of the loans transferred during the three months ended March 31, 2015 and March 31, 2014 have been derecognized in the unaudited Consolidated Financial Statements. The Corporation has a continuing involvement in each of the agreements by way of relationship management and servicing the loans; however, there are no further obligations to the third-party participant required of the Corporation in the event of a borrower’s default, other than standard representations and warranties related to sold amounts. 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. 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 amount of loan participations purchased on the Corporation’s Consolidated Balance Sheets as of March 31, 2015 and December 31, 2014 was $479,000 and $482,000, respectively.
	The total amount of outstanding loans transferred to third parties as loan participations sold at March 31, 2015 and December 31, 2014 was $121.6 million and $116.6 million, respectively, all of which was treated as a sale and derecognized under the applicable accounting guidance in effect at the time of the transfers of the financial assets. The Corporation’s continuing involvement with these loans is by way of partial ownership, relationship management and all servicing responsibilities. As of March 31, 2015 and December 31, 2014, the total amount of the Corporation’s partial ownership of loans on the Corporation’s Consolidated Balance Sheets was $102.9 million and $96.4 million, respectively. As of March 31, 2015, $1.1 million loans in this participation sold portfolio were considered impaired as compared to $1.2 million as of December 31, 2014. The Corporation does not share in the participant’s portion of the charge-offs.
	The Corporation sells residential real estate loans, servicing released, in the secondary market. The total principal amount of residential real estate loans sold during the three months ended March 31, 2015 was $9.1 million. No residential real estate loans were originated or sold during the three months ended March 31, 2014. Each of the transfers of these financial assets met the qualifications for sale accounting, and therefore all of the loans transferred during the three months ended March 31, 2015 have been derecognized in the unaudited Consolidated Financial Statements. The Corporation has a continuing involvement in each of the transactions by way of relationship management; however, there are no further obligations of the Corporation in the event of a borrower’s default, other than standard representations and warranties related to the sold amount. 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.
	ASC 310-30, Accounting for Certain Loans or Debt Securities Acquired in a Transfer, applies to purchased loans with evidence of deterioration in credit quality since origination for which it is probable at acquisition that the Corporation will be unable to collect all contractually required payments are considered to be credit impaired. Purchased credit-impaired loans are initially recorded at fair value, which is estimated by discounting the cash flows expected to be collected at the acquisition date. Because the estimate of expected cash flows reflects an estimate of future credit losses expected to be incurred over the life of the loans, an allowance for credit losses is not recorded at the acquisition date. The excess of cash flows expected at acquisition over the estimated fair value, referred to as the accretable yield, is recognized in interest income over the remaining life of the loan on a level-yield basis, contingent on the subsequent evaluation of future expected cash flows. The difference between the contractually required payments at acquisition and the cash flows expected to be collected at acquisition is referred to as the nonaccretable difference. A subsequent decrease in the estimate of cash flows expected to be received on purchased credit-impaired loans generally results in the recognition of an allowance for credit losses. Subsequent increases in cash flows result in reversal of any nonaccretable difference (or allowance for loan and lease losses to the extent any has been recorded) with a positive impact on interest income subsequently recognized. The measurement of cash flows involves assumptions and judgments for interest rates, prepayments, default rates, loss severity, and collateral values. All of these factors are inherently subjective and significant changes in the cash flow estimates over the life of the loan can result.
	The following table reflects the contractually required payments receivable, cash flows expected to be collected and fair value of the Corporation’s purchased credit impaired loans as of March 31, 2015 and December 31, 2014:
		March 31,				December 31,
		2015				2014
		(In Thousands)
	Contractually required payments	$	6,783			$	6,874
	Less: nonaccretable difference	(2,252		)		(2,173		)
	Cash flows expected to be collected	4,531				4,701
	Less: accretable yield	(566		)		(676		)
	Fair value of purchase credit impaired loans	$	3,965			$	4,025
	The following table presents a rollforward of the Corporation’s accretable yield as of March 31, 2015 and December 31, 2014:
		As of and for the Three Months Ended March 31, 2015				As of and for the Year Ended December 31, 2014
		(In Thousands)
	Accretable yield at the beginning of period	$	676			$	683
	Less: Accretion	(4		)		(7		)
	Reclassification to nonaccretable difference	(106		)		—
	Outstanding accretable yield	$	566			$	676
	The following information illustrates 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 March 31, 2015 and December 31, 2014:
			Category
	As of March 31, 2015		I				II				III				IV			Total
			(Dollars in Thousands)
	Commercial real estate:
	Commercial real estate — owner occupied		$	128,449			$	18,511			$	16,454			$	568		$	163,982
	Commercial real estate — non-owner occupied		368,016				25,027				10,921				967			404,931
	Construction and land development		100,815				8,519				6,810				5,067			121,211
	Multi-family		82,500				746				903				14			84,163
	1-4 family		30,322				4,746				3,313				1,778			40,159
	Total commercial real estate		710,102				57,549				38,401				8,394			814,446
	Commercial and industrial		380,318				22,493				21,797				1,805			426,413
	Direct financing leases, net		29,926				1,469				249				—			31,644
	Consumer and other:
	Home equity and second mortgages		8,245				201				163				423			9,032
	Other		15,830				—				—				702			16,532
	Total consumer and other		24,075				201				163				1,125			25,564
	Total gross loans and leases receivable		$	1,144,421			$	81,712			$	60,610			$	11,324		$	1,298,067
	Category as a % of total portfolio		88.17		%		6.29		%		4.67		%		0.87		%	100		%
		Category
As of December 31, 2014		I				II				III				IV			Total
		(Dollars in Thousands)
Commercial real estate:
Commercial real estate — owner occupied		$	131,094			$	15,592			$	16,621			$	577		$	163,884
Commercial real estate — non-owner occupied		378,671				20,823				17,498				970			417,962
Construction and land development		100,934				8,193				6,876				5,157			121,160
Multi-family		70,897				751				913				17			72,578
1-4 family		25,997				5,278				3,336				1,571			36,182
Total commercial real estate		707,593				50,637				45,244				8,292			811,766
Commercial and industrial		383,755				18,524				12,026				2,349			416,654
Direct financing leases, net		32,756				1,120				289				—			34,165
Consumer and other:
Home equity and second mortgages		7,039				205				189				433			7,866
Other		10,570				50				—				721			11,341
Total consumer and other		17,609				255				189				1,154			19,207
Total gross loans and leases receivable		$	1,141,713			$	70,536			$	57,748			$	11,795		$	1,281,792
Category as a % of total portfolio		89.07		%		5.5		%		4.51		%		0.92		%	100		%
Credit underwriting through a committee process is a key component of the Corporation’s operating philosophy. Business development officers 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. In addition, the Corporation makes every effort to ensure that there is appropriate collateral at the time of origination to protect the Corporation’s interest in the related loan or lease.
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 borrower’s management team or the industry in which the borrower operates. Loans and leases in this category are not subject to additional monitoring procedures above and beyond what is required at the origination or renewal of the loan or lease. 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 and 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 Banks’ loan committees.
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 Banks. 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 required 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 loan committees of the Banks on a monthly basis and the Banks’ Boards 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 Banks will receive the required principal and interest in accordance with the contractual 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 loan committees of the Banks on a monthly basis and the Banks’ Boards of Directors at each of their regularly scheduled meetings.
Utilizing regulatory classification terminology, the Corporation identified $24.2 million and $27.1 million of loans and leases as Substandard as of March 31, 2015 and December 31, 2014, respectively. No loans were considered Special Mention, Doubtful or Loss as of either March 31, 2015 or December 31, 2014. The population of Substandard loans are all Category IV loans and a subset of Category III loans.
The delinquency aging of the loan and lease portfolio by class of receivable as of March 31, 2015 and December 31, 2014 is as follows:
As of March 31, 2015		30-59				60-89				Greater				Total past due			Current			Total loans
		days past due				days past due				than 90
										days past due
		(Dollars in Thousands)
Accruing loans and leases
Commercial real estate:
Owner occupied		$	—			$	—			$	—			$	—		$	163,489		$	163,489
Non-owner occupied		—				—				—				—			404,645			404,645
Construction and land development		—				—				—				—			116,362			116,362
Multi-family		—				—				—				—			84,149			84,149
1-4 family		—				—				—				—			39,249			39,249
Commercial and industrial		—				—				—				—			424,639			424,639
Direct financing leases, net		—				—				—				—			31,644			31,644
Consumer and other:
Home equity and second mortgages		—				—				—				—			8,709			8,709
Other		—				—				—				—			15,829			15,829
Total		—				—				—				—			1,288,715			1,288,715
Non-accruing loans and leases
Commercial real estate:
Owner occupied		$	—			$	—			$	—			$	—		$	493		$	493
Non-owner occupied		—				24				214				238			48			286
Construction and land development		—				—				193				193			4,656			4,849
Multi-family		—				—				—				—			14			14
1-4 family		238				—				296				534			376			910
Commercial and industrial		1				81				1,647				1,729			45			1,774
Direct financing leases, net		—				—				—				—			—			—
Consumer and other:
Home equity and second mortgages		—				52				—				52			271			323
Other		—				—				703				703			—			703
Total		239				157				3,053				3,449			5,903			9,352
Total loans and leases
Commercial real estate:
Owner occupied		$	—			$	—			$	—			$	—		$	163,982		$	163,982
Non-owner occupied		—				24				214				238			404,693			404,931
Construction and land development		—				—				193				193			121,018			121,211
Multi-family		—				—				—				—			84,163			84,163
1-4 family		238				—				296				534			39,625			40,159
Commercial and industrial		1				81				1,647				1,729			424,684			426,413
Direct financing leases, net		—				—				—				—			31,644			31,644
Consumer and other:
Home equity and second mortgages		—				52				—				52			8,980			9,032
Other		—				—				703				703			15,829			16,532
Total		$	239			$	157			$	3,053			$	3,449		$	1,294,618		$	1,298,067
Percent of portfolio		0.02		%		0.01		%		0.24		%		0.27		%	99.73		%	100		%
As of December 31, 2014		30-59				60-89				Greater				Total past due			Current			Total loans
		days past due				days past due				than 90
										days past due
		(Dollars in Thousands)
Accruing loans and leases
Commercial real estate:
Owner occupied		$	—			$	—			$	—			$	—		$	163,384		$	163,384
Non-owner occupied		—				—				—				—			417,676			417,676
Construction and land development		—				—				—				—			116,228			116,228
Multi-family		—				—				—				—			72,561			72,561
1-4 family		—				—				—				—			35,492			35,492
Commercial and industrial		—				—				—				—			414,336			414,336
Direct financing leases, net		—				—				—				—			34,165			34,165
Consumer and other:
Home equity and second mortgages		—				—				—				—			7,537			7,537
Other		—				—				—				—			10,621			10,621
Total		—				—				—				—			1,272,000			1,272,000
Non-accruing loans and leases
Commercial real estate:
Owner occupied		$	—			$	—			$	—			$	—		$	500		$	500
Non-owner occupied		—				215				—				215			71			286
Construction and land development		—				193				—				193			4,739			4,932
Multi-family		—				—				—				—			17			17
1-4 family		—				106				306				412			278			690
Commercial and industrial		364				146				736				1,246			1,072			2,318
Direct financing leases, net		—				—				—				—			—			—
Consumer and other:
Home equity and second mortgages		—				—				—				—			329			329
Other		—				—				720				720			—			720
Total		364				660				1,762				2,786			7,006			9,792
Total loans and leases
Commercial real estate:
Owner occupied		$	—			$	—			$	—			$	—		$	163,884		$	163,884
Non-owner occupied		—				215				—				215			417,747			417,962
Construction and land development		—				193				—				193			120,967			121,160
Multi-family		—				—				—				—			72,578			72,578
1-4 family		—				106				306				412			35,770			36,182
Commercial and industrial		364				146				736				1,246			415,408			416,654
Direct financing leases, net		—				—				—				—			34,165			34,165
Consumer and other:
Home equity and second mortgages		—				—				—				—			7,866			7,866
Other		—				—				720				720			10,621			11,341
Total		$	364			$	660			$	1,762			$	2,786		$	1,279,006		$	1,281,792
Percent of portfolio		0.03		%		0.05		%		0.14		%		0.22		%	99.78		%	100		%
The Corporation’s total impaired assets consisted of the following at March 31, 2015 and December 31, 2014, respectively.
		March 31,				December 31,
		2015				2014
		(Dollars in Thousands)
Non-accrual loans and leases
Commercial real estate:
Commercial real estate — owner occupied		$	493			$	500
Commercial real estate — non-owner occupied		286				286
Construction and land development		4,849				4,932
Multi-family		14				17
1-4 family		910				690
Total non-accrual commercial real estate		6,552				6,425
Commercial and industrial		1,774				2,318
Direct financing leases, net		—				—
Consumer and other:
Home equity and second mortgages		323				329
Other		703				720
Total non-accrual consumer and other loans		1,026				1,049
Total non-accrual loans and leases		9,352				9,792
Foreclosed properties, net		1,566				1,693
Total non-performing assets		10,918				11,485
Performing troubled debt restructurings		1,972				2,003
Total impaired assets		$	12,890			$	13,488
		March 31,			December 31,
		2015			2014
Total non-accrual loans and leases to gross loans and leases		0.72	%		0.76	%
Total non-performing assets to total gross loans and leases plus foreclosed properties, net		0.84			0.89
Total non-performing assets to total assets		0.65			0.7
Allowance for loan and lease losses to gross loans and leases		1.13			1.12
Allowance for loan and lease losses to non-accrual loans and leases		157.12			146.33
As of March 31, 2015 and December 31, 2014, $7.3 million and $7.4 million of the non-accrual loans were considered troubled debt restructurings, respectively. As of March 31, 2015, there were no unfunded commitments associated with troubled debt restructured loans and leases.
		As of March 31, 2015										As of December 31, 2014
		Number		Pre-Modification				Post-Modification				Number		Pre-Modification			Post-Modification
		of		Recorded				Recorded				of		Recorded			Recorded
		Loans		Investment				Investment				Loans		Investment			Investment
		(Dollars in Thousands)
Troubled debt restructurings:
Commercial real estate
Commercial real estate — owner occupied		2		$	624			$	568			2		$	624		$	577
Commercial real estate — non-owner occupied		5		1,095				905				5		1,095			970
Construction and land development		4		6,260				5,051				4		6,260			5,157
Multi-family		1		184				14				1		184			17
1-4 family		16		2,119				1,518				16		2,119			1,368
Commercial and industrial		4		361				151				4		361			155
Direct financing leases, net		—		—				—				—		—			—
Consumer and other:
Home equity and second mortgages		6		772				398				6		772			431
Other		2		2,080				702				2		2,080			721
Total		40		$	13,495			$	9,307			40		$	13,495		$	9,396
All loans and leases modified as a troubled debt restructuring are evaluated 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 March 31, 2015 and December 31, 2014, the Corporation’s troubled debt restructurings grouped by type of concession were as follows:
		As of March 31, 2015							As of December 31, 2014
		Number			Recorded Investment				Number			Recorded Investment
		of							of
		Loans							Loans
		(Dollars in Thousands)
Commercial real estate
Extension of term		1			$	35			1			$	39
Interest rate concession		1			56				1			65
Combination of extension and interest rate concession		26			7,965				26			7,984
Commercial and industrial
Combination of extension and interest rate concession		4			151				4			155
Consumer and other
Extension of term		3			735				3			753
Combination of extension and interest rate concession		5			365				5			400
Total		40			$	9,307			40			$	9,396
There were no loans and leases modified in a troubled debt restructuring during the previous 12 months which subsequently defaulted during the three months ended March 31, 2015.
The following represents additional information regarding the Corporation’s impaired loans and leases by class:
		Impaired Loans and Leases
		As of and for the Three Months Ended March 31, 2015
		Recorded				Unpaid				Impairment				Average			Foregone			Interest			Net
		investment				principal				reserve				recorded			interest			income			foregone
						balance								investment(1)			income			recognized			interest
																							income
		(In Thousands)
With no impairment reserve recorded:
Commercial real estate:
Owner occupied		$	568			$	568			$	—			$	573		$	6		$	—		$	6
Non-owner occupied		919				919				—				921			3			—			3
Construction and land development		5,068				7,738				—				5,135			37			—			37
Multi-family		14				380				—				15			13			—			13
1-4 family		1,351				1,361				—				1,459			10			—			10
Commercial and industrial		1,482				2,406				—				2,252			74			1			73
Direct financing leases, net		—				—				—				—			—			—			—
Consumer and other:
Home equity and second mortgages		371				371				—				375			4			—			4
Other		702				1,369				—				712			20			—			20
Total		10,475				15,112				—				11,442			167			1			166
With impairment reserve recorded:
Commercial real estate:
Owner occupied		$	—			$	—			$	—			$	—		$	—		$	—		$	—
Non-owner occupied		48				88				48				48			1			—			1
Construction and land development		—				—				—				—			—			—			—
Multi-family		—				—				—				—			—			—			—
1-4 family		427				427				159				386			5			—			5
Commercial and industrial		322				322				132				33			5			—			5
Direct financing leases, net		—				—				—				—			—			—			—
Consumer and other:
Home equity and second mortgages		52				52				52				52			1			—			1
Other		—				—				—				—			—			—			—
Total		849				889				391				519			12			—			12
Total:
Commercial real estate:
Owner occupied		$	568			$	568			$	—			$	573		$	6		$	—		$	6
Non-owner occupied		967				1,007				48				969			4			—			4
Construction and land development		5,068				7,738				—				5,135			37			—			37
Multi-family		14				380				—				15			13			—			13
1-4 family		1,778				1,788				159				1,845			15			—			15
Commercial and industrial		1,804				2,728				132				2,285			79			1			78
Direct financing leases, net		—				—				—				—			—			—			—
Consumer and other:
Home equity and second mortgages		423				423				52				427			5			—			5
Other		702				1,369				—				712			20			—			20
Grand total		$	11,324			$	16,001			$	391			$	11,961		$	179		$	1		$	178
-1	Average recorded investment is calculated primarily using daily average balances.
		Impaired Loans and Leases
		As of and for the Year Ended December 31, 2014
		Recorded				Unpaid				Impairment				Average			Foregone			Interest			Net
		investment				principal				reserve				recorded			interest			income			Foregone
						balance								investment(1)			income			recognized			Interest
																							Income
		(In Thousands)
With no impairment reserve recorded:
Commercial real estate:
Owner occupied		$	577			$	577			$	—			$	484		$	30		$	79		$	(49	)
Non-owner occupied		921				921				—				349			22			—			22
Construction and land development		5,157				7,828				—				5,285			155			—			155
Multi-family		17				384				—				24			53			—			53
1-4 family		1,181				1,218				—				380			15			12			3
Commercial and industrial		2,316				2,926				—				6,141			463			649			(186		)
Direct financing leases, net		—				—				—				—			—			—			—
Consumer and other:
Home equity and second mortgages		380				380				—				495			18			—			18
Other		721				1,389				—				768			87			—			87
Total		11,270				15,623				—				13,926			843			740			103
With impairment reserve recorded:
Commercial real estate:
Owner occupied		$	—			$	—			$	—			$	—		$	—		$	—		$	—
Non-owner occupied		49				89				49				52			4			—			4
Construction and land development		—				—				—				—			—			—			—
Multi-family		—				—				—				—			—			—			—
1-4 family		390				390				155				405			18			—			18
Commercial and industrial		33				33				33				34			—			—			—
Direct financing leases, net		—				—				—				—			—			—			—
Consumer and other:
Home equity and second mortgages		53				53				53				57			5			—			5
Other		—				—				—				—			—			—			—
Total		525				565				290				548			27			—			27
Total:
Commercial real estate:
Owner occupied		$	577			$	577			$	—			$	484		$	30		$	79		$	(49	)
Non-owner occupied		970				1,010				49				401			26			—			26
Construction and land development		5,157				7,828				—				5,285			155			—			155
Multi-family		17				384				—				24			53			—			53
1-4 family		1,571				1,608				155				785			33			12			21
Commercial and industrial		2,349				2,959				33				6,175			463			649			(186		)
Direct financing leases, net		—				—				—				—			—			—			—
Consumer and other:
Home equity and second mortgages		433				433				53				552			23			—			23
Other		721				1,389				—				768			87			—			87
Grand total		$	11,795			$	16,188			$	290			$	14,474		$	870		$	740		$	130
-1	Average recorded investment is calculated primarily using daily average balances.
The difference between the loans and leases recorded investment and the unpaid principal balance of $4.7 million and $4.4 million as of March 31, 2015 and December 31, 2014 represents partial charge-offs resulting from confirmed losses due to the 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 $2.0 million of loans as of March 31, 2015 and December 31, 2014, that were performing troubled debt restructurings, and thus, while 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 principal. Foregone interest represents the interest that was contractually due on the note but not received or recorded. To the extent the amount of principal on a non-accrual note 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 breaks out the portfolio by segments and risk ratings. 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 March 31, 2015
		Commercial				Commercial				Consumer				Direct			Total
		real estate				and				and other				financing
						industrial								leases, net
		(Dollars in Thousands)
Allowance for credit losses:
Beginning balance		$	8,619			$	5,067			$	218			$	425		$	14,329
Charge-offs		(11		)		(313		)		—				—			(324		)
Recoveries		2				—				3				—			5
Provision		99				548				67				(30		)	684
Ending balance		$	8,709			$	5,302			$	288			$	395		$	14,694
Ending balance: individually evaluated for impairment		$	207			$	33			$	52			$	—		$	292
Ending balance: collectively evaluated for impairment		$	8,502			$	5,170			$	236			$	395		$	14,303
Ending balance: loans acquired with deteriorated credit quality		$	—			$	99			$	—			$	—		$	99
Loans and lease receivables:
Ending balance, gross		$	814,446			$	426,413			$	25,564			$	31,644		$	1,298,067
Ending balance: individually evaluated for impairment		$	5,253			$	1,154			$	890			$	—		$	7,297
Ending balance: collectively evaluated for impairment		$	806,051			$	424,608			$	24,440			$	31,644		$	1,286,743
Ending balance: loans acquired with deteriorated credit quality		$	3,142			$	651			$	234			$	—		$	4,027
Allowance as % of gross loans		1.07		%		1.24		%		1.13		%		1.25		%	1.13		%
		As of and for the Three Months Ended March 31, 2014
		Commercial				Commercial				Consumer				Direct			Total
		real estate				and				and other				financing
						industrial								leases, net
		(Dollars in Thousands)
Allowance for credit losses:
Beginning balance		$	9,055			$	4,235			$	273			$	338		$	13,901
Charge-offs		—				—				—				—			—
Recoveries		15				—				5				—			20
Provision		(98		)		284				(2		)		(4		)	180
Ending balance		$	8,972			$	4,519			$	276			$	334		$	14,101
Ending balance: individually evaluated for impairment		$	208			$	239			$	60			$	—		$	507
Ending balance: collectively evaluated for impairment		$	8,764			$	4,280			$	216			$	334		$	13,594
Ending balance: loans acquired with deteriorated credit quality		$	—			$	—			$	—			$	—		$	—
Loans and lease receivables:
Ending balance, gross		$	638,701			$	303,630			$	17,526			$	26,364		$	986,221
Ending balance: individually evaluated for impairment		$	5,291			$	6,657			$	1,344			$	—		$	13,292
Ending balance: collectively evaluated for impairment		$	632,006			$	296,973			$	16,182			$	26,364		$	971,525
Ending balance: loans acquired with deteriorated credit quality		$	1,404			$	—			$	—			$	—		$	1,404
Allowance as % of gross loans		1.4		%		1.49		%		1.57		%		1.27		%	1.43		%

Deposits

Deposits	3 Months Ended
	Mar. 31, 2015
Deposits [Abstract]
Deposits	Deposits
	The composition of deposits at March 31, 2015 and December 31, 2014 was as follows. Weighted average balances represent year-to-date averages.
		March 31, 2015						December 31, 2014
		Balance		Weighted		Weighted		Balance		Weighted		Weighted
				average		average rate				average		average rate
				balance						balance
		(Dollars in Thousands)
	Non-interest-bearing transaction accounts	$	194,277	$	200,274	—	%	$	204,328	$	154,687	—	%
	Interest-bearing transaction accounts	102,739		107,311		0.22		104,199		83,508		0.22
	Money market accounts	642,560		625,888		0.55		575,766		493,322		0.52
	Certificates of deposit	115,252		124,377		0.71		126,635		60,284		0.89
	Wholesale deposits	430,973		424,171		1.36		427,340		416,202		1.49
	Total deposits	$	1,485,801	$	1,482,021	0.69		$	1,438,268	$	1,208,003	0.78

FHLB_Advances_Other_Borrowings

FHLB Advances, Other Borrowings and Junior Subordinated Notes Payable	3 Months Ended
	Mar. 31, 2015
Debt Disclosure [Abstract]
FHLB Advances, Other Borrowings and Junior Subordinated Notes Payable	FHLB Advances, Other Borrowings and Junior Subordinated Notes Payable
	The composition of borrowed funds at March 31, 2015 and December 31, 2014 was as follows. Weighted average balances represent year-to-date averages.
		March 31, 2015						December 31, 2014
		Balance		Weighted		Weighted		Balance		Weighted		Weighted
				average		average				average		average
				balance		rate				balance		rate
		(Dollars in Thousands)
	Federal funds purchased	$	—	$	—	—	%	$	—	$	237	0.82	%
	FHLB advances and other borrowings	10,012		10,042		1.51		10,058		5,093		0.56
	Line of credit	1,510		521		3.24		1,010		13		3.3
	Subordinated notes payable	22,926		22,926		6.94		22,926		13,362		7.07
	Junior subordinated notes	10,315		10,315		10.64		10,315		10,315		10.78
		$	44,763	$	43,804	6.55		$	44,309	$	29,020	7.24
	Short-term borrowings	$	4,010					$	2,010
	Long-term borrowings	40,753						42,299
		$	44,763					$	44,309
	As of March 31, 2015, the Corporation was in compliance with its debt covenants under its third party senior line of credit. Per the promissory note dated February 19, 2015, the Corporation pays a commitment fee on its secured senior line of credit. During the three months ended March 31, 2015 the Corporation incurred $3,000 additional interest expense due to this fee. Prior to February 19, 2015, the Corporation paid an unused line fee on its secured senior line of credit. During the three months ended March 31, 2014, the Corporation incurred $3,000 additional interest expense due to this fee.

Fair_Value_Disclosures

Fair Value Disclosures	3 Months Ended
	Mar. 31, 2015
Fair Value Disclosures [Abstract]
Fair Value Disclosures	Fair Value Disclosures
	The Corporation determines the fair market 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:
			Fair Value Measurements Using
	March 31, 2015		Level 1			Level 2		Level 3		Total
			(In Thousands)
	Assets:
	Securities available-for-sale:
	Municipal obligations		$	—		$	578	$	—	$	578
	Asset backed securities		$	—		$	1,494	$	—	$	1,494
	U.S. Government agency obligations - government-sponsored enterprises		—			8,047		—		8,047
	Collateralized mortgage obligations - government issued		—			62,669		—		62,669
	Collateralized mortgage obligations - government-sponsored enterprises		—			70,163		—		70,163
	Interest rate swaps		—			956		—		956
	Liabilities:									—
	Interest rate swaps		$	—		$	956	$	—	$	956
			Fair Value Measurements Using
	December 31, 2014		Level 1			Level 2		Level 3		Total
			(In Thousands)
	Assets:
	Securities available-for-sale:
	Municipal obligations		$	—		$	578	$	—	$	578
	Asset backed securities		—			1,510		—		1,510
	U.S. Government agency obligations - government-sponsored enterprises		—			8,965		—		8,965
	Collateralized mortgage obligations - government issued		—			68,874		—		68,874
	Collateralized mortgage obligations - government-sponsored enterprises		—			64,771		—		64,771
	Interest rate swaps		—			575		—		575
	Liabilities:
	Interest rate swaps		$	—		$	575	$	—	$	575
	For assets and liabilities measured at fair value on a recurring basis, there were no transfers between the levels during the three months ended March 31, 2015 or the year ended December 31, 2014 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:
						As of and for the Three Months Ended March 31, 2015
			Balance at			Fair Value Measurements Using						Total
												Gains
			March 31,			Level 1		Level 2		Level 3		(Losses)
			2015
			(In Thousands)
	Impaired loans		$	8,363		$	—	$	6,739	$	1,624	$	—
	Foreclosed properties		1,566			—		1,566		—		—
	Loan servicing rights		1,027			—		—		1,027		—
						As of and for the Year Ended December 31, 2014
			Balance at			Fair Value Measurements Using						Total
												Gains
			December 31,			Level 1		Level 2		Level 3		(Losses)
			2014
			(In Thousands)
	Impaired loans		$	8,565		$	—	$	7,025	$	1,540	$	—
	Foreclosed properties		1,693			—		1,693		—		(4		)
	Loan servicing rights		943			—		—		943		—
	Impaired loans that are collateral dependent were written down to their net realizable value of $8.4 million and $8.6 million at March 31, 2015 and December 31, 2014, respectively, through the establishment of specific reserves or by recording charge-offs when the carrying value exceeded the fair value. 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 discounts 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 10% - 100%. The weighted average of those unobservable inputs as of the measurement date of March 31, 2015 was 34%. The majority of the impaired loans in the Level 3 category are considered collateral dependent loans.
	Non-financial assets subject to measurement at fair value on a non-recurring basis included foreclosed properties and loan servicing rights.
	Loan servicing rights are recognized when they are acquired through sales of the guaranteed portion of SBA loans. When SBA loans are sold, servicing rights are initially recorded at fair value with the income statement effect recorded in gains on sales of loans. Loan servicing assets are subsequently measured using the amortization method, which requires servicing rights to be amortized into interest income in proportion to, and over the period of, the estimated future net servicing income of the underlying loans.
	As of March 31, 2015 and December 31, 2014, the estimated fair value of the Corporation’s loan servicing asset was $1.0 million and $943,000, respectively. This servicing asset represents the servicing rights retained upon sale of the guaranteed portion of certain SBA loans. The Corporation periodically reviews this portfolio for impairment and engages a third-party valuation firm to assess the fair value of the overall servicing rights portfolio.
	Foreclosed properties, upon initial recognition, are re-measured 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.
	As of March 31, 2015, there were no foreclosed properties supported by a Level 3 valuation. Subsequent impairments of foreclosed properties are recorded as a loss on foreclosed properties. Based upon an evaluation of value of certain of the Corporation’s foreclosed properties, no impairment losses were recognized for the three months ended March 31, 2015. The activity of the Corporation’s foreclosed properties is summarized as follows:
		As of and for the Three Months Ended March 31, 2015			As of and for the Year Ended December 31, 2014
		(In Thousands)
	Foreclosed properties at the beginning of the period	$	1,693		$	333
	Foreclosed properties acquired in acquisition, at fair value	—			1,605
	Proceeds from sale of foreclosed properties	(143		)	(255		)
Net gain on sale of foreclosed properties	16			14
Impairment valuation	—			(4		)
Foreclosed properties at the end of the period	$	1,566		$	1,693
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:
		March 31, 2015
		Carrying			Fair Value
		Amount
					Total		Level 1		Level 2		Level 3
		(In Thousands)
Financial assets:
Cash and cash equivalents		$	141,887		$	141,887	$	120,127	$	6,410	$	15,350
Securities available-for-sale		142,951			142,951		—		142,951		—
Securities held-to-maturity		40,599			41,147		—		41,147		—
Loans held for sale		2,396			2,396		—		2,396		—
Loans and lease receivables, net		1,279,846			1,310,067		—		6,739		1,303,328
Federal Home Loan Bank and Federal Reserve Bank stock		2,798			2,798		—		—		2,798
Cash surrender value of life insurance		27,548			27,548		27,548		—		—
Accrued interest receivable		4,146			4,146		4,146		—		—
Interest rate swaps		956			956		—		956		—
Financial liabilities:
Deposits		$	1,485,801		$	1,489,399	$	939,576	$	549,823	$	—
Federal Home Loan Bank and other borrowings		34,448			35,080		—		35,080		—
Junior subordinated notes		10,315			7,086		—		—		7,086
Interest rate swaps		956			956		—		956		—
Accrued interest payable		1,744			1,744		1,744		—		—
Off-balance-sheet items:
Standby letters of credit		128			128		—		—		128
Commitments to extend credit		—			*		*		*		*
*Not meaningful
		December 31, 2014
		Carrying			Fair Value
		Amount
					Total		Level 1		Level 2		Level 3
		(In Thousands)
Financial assets:
Cash and cash equivalents		$	103,237		$	103,227	$	85,937	$	6,890	$	10,400
Securities available-for-sale		144,698			144,698		—		144,698		—
Securities held-to-maturity		41,563			41,694		—		41,694		—
Loans held for sale		1,340			1,340		—		1,340		—
Loans and lease receivables, net		1,265,098			1,285,162		—		7,025		1,278,137
Federal Home Loan Bank and Federal Reserve Bank stock		2,340			2,340		—		—		2,340
Cash surrender value of life insurance		27,314			27,314		27,314		—		—
Accrued interest receivable		3,932			3,932		3,932		—		—
Interest rate swaps		575			575		—		575		—
Financial liabilities:
Deposits		$	1,438,268		$	1,440,248	$	884,292	$	555,956	$	—
Federal Home Loan Bank and other borrowings		33,994			34,590		—		34,590		—
Junior subordinated notes		10,315			7,101		—		—		7,101
Interest rate swaps		575			575		—		575		—
Accrued interest payable		1,574			1,574		1,574		—		—
Off-balance-sheet items:
Standby letters of credit		192			192		—		—		192
Commitments to extend credit		—			*		*		*		*
*Not meaningful
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 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 amounts reported for cash and due from banks, interest-bearing deposits held by the Corporation, accrued interest receivable and accrued interest payable approximate fair value because of their immediate availability and because they do not present unanticipated credit concerns. The carrying value of commercial paper, included in the cash and cash equivalents category, approximates fair value due to the short-term maturity structure of the instrument. As of March 31, 2015 and December 31, 2014, the Corporation held $15.4 million and $10.4 million, respectively, of commercial paper. The fair value of commercial paper is considered a Level 3 input due to the lack of available independent pricing sources. The carrying value of brokered certificates of deposit purchased is equivalent to the purchase price of the instruments as the Corporation has not elected a fair value option 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 March 31, 2015 and December 31, 2014, the Corporation held $6.4 million and $6.9 million, respectively, of brokered certificates of deposits.
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 to another pricing source on a quarterly basis to review for reasonableness. In addition, the Corporation reviews the third-party valuation methodology on a periodic basis. Any significant differences in valuation 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 residential real estate mortgage loans and the guaranteed portion of SBA loans, are carried at the lower of cost or estimated fair value. The estimated fair value was based on what secondary markets are currently offering for portfolios with similar characteristics.
Loans and Leases: 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 Banks’ 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 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.
Cash Surrender Value of 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.
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 Banks for debt with similar terms and remaining maturities are used to estimate fair value of existing debt.
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.
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.
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_Instrumen

Derivative Financial Instruments	3 Months Ended
	Mar. 31, 2015
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 considers the impact of netting and any applicable credit enhancements such as collateral postings, thresholds and guarantees.
	At March 31, 2015, the aggregate amortizing notional value of interest rate swaps with various commercial borrowers was 27.4 million. The Corporation receives fixed rates and pays floating rates based upon LIBOR on the swaps with commercial borrowers. These interest rate swaps mature in March, 2016 through February, 2023. 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 Consolidated Balance Sheets as a derivative asset of $956,000, included in accrued interest receivable and other assets. 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 March 31, 2015, no interest rate swaps were in default and therefore all values for the commercial borrower swaps are recorded on a gross basis within the Corporation’s financial position.
	At March 31, 2015, the aggregate amortizing notional value of interest rate swaps with dealer counterparties was also 27.4 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 March, 2016 through February, 2023. Dealer counterparty swaps are subject to master netting agreements among the contracts within each of the Banks and are reported on the Consolidated Balance Sheets as a net derivative liability of $956,000, included in accrued interest payable and other liabilities as of March 31, 2015. The gross amount of dealer counterparty swaps, without regard to the enforceable master netting agreement, was a derivative liability of $956,000, included in accrued interest payable and other liabilities as of March 31, 2015. No right of offset exists with the dealer counterparty swaps.
	The table below provides information about the location and fair value of the Corporation’s derivative instruments as of March 31, 2015 and December 31, 2014.
		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
	March 31, 2015	Other assets	$	956	Other liabilities	$	956
	December 31, 2014	Other assets	$	575	Other liabilities	$	575
	No derivative instruments held by the Corporation for the three months ended March 31, 2015 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 three months ended March 31, 2015 and 2014 had an insignificant impact on the unaudited Consolidated Statements of Income.

Regulatory_Capital

Regulatory Capital	3 Months Ended
	Mar. 31, 2015
Regulatory Capital Requirements [Abstract]
Regulatory Capital	Regulatory Capital
	The Corporation and the Banks are subject to various regulatory capital requirements administered by Federal, State of Wisconsin and State of Kansas 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 Banks’ assets, liabilities and certain off-balance-sheet items as calculated under regulatory practices. The Corporation’s and the Banks’ 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 (the “Capital 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 Banks. The Corporation’s and the Banks’ 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 companies 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.
	The Banks are 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 Banks 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 Banks 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 Banks 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 average assets. These risk-based capital requirements presently address credit risk related to both recorded and off-balance-sheet commitments and obligations. Management believes, as of March 31, 2015, that the Corporation and the Banks met all applicable capital adequacy requirements.
	In July 2013, the FRB and the FDIC approved the final rules implementing the Basel Committee on Banking Supervision’s (“BCBS”) 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 bank holding companies with consolidated assets of less than $1 billion). Under the final rules, minimum requirements will increase 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 to retain, through one-time election, the existing treatment for accumulated other comprehensive income, which would 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, is 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 increase each subsequent year by an additional 0.625% until reaching its final level of 2.5% on January 1, 2019.
	The phase-in period for the final rules became effective for the Corporation on January 1, 2015, with full compliance with all of the final rules’ requirements phased in over a multi-year schedule, to be fully phased-in by January 1, 2019. As of March 31, 2015, the Corporation’s and the Bank’s capital levels remained characterized as well capitalized under the new rules.
	The following table summarizes the Corporation’s and Banks’ capital ratios and the ratios required by their federal regulators at March 31, 2015 and December 31, 2014, respectively:
		Actual				Minimum Required for Capital Adequacy Purposes				Minimum Required to Be Well
										Capitalized Under Prompt Corrective Action Requirements
		Amount		Ratio		Amount		Ratio		Amount		Ratio
		(Dollars in Thousands)
	As of March 31, 2015
	Total capital
	(to risk-weighted assets)
	Consolidated	$	177,594	11.4	%	$	124,677	8	%	N/A		N/A
	First Business Bank	133,667		11.47		93,216		8		$	116,544	10	%
	First Business Bank — Milwaukee	19,215		12.17		12,626		8		15,783		10
	Alterra Bank	26,346		11.05		19,072		8		23,841		10
	Tier 1 capital
	(to risk-weighted assets)
	Consolidated	$	139,974	8.98	%	$	93,508	6	%	N/A		N/A
	First Business Bank	121,166		10.4		69,912		6		$	93,235	8	%
	First Business Bank — Milwaukee	17,721		11.23		9,470		6		12,626		8
	Alterra Bank	25,647		10.76		14,304		6		19,073		8
	Common equity Tier 1 capital
	(to risk-weighted assets)
	Consolidated	$	129,974	8.34	%	$	70,131	4.5	%	N/A		N/A
	First Business Bank	121,166		10.4		52,434		4.5		$	101,318	6.5	%
	First Business Bank — Milwaukee	17,721		11.23		7,102		4.5		75,753		6.5
	Alterra Bank	25,647		10.76		10,728		4.5		10,259		6.5
	Tier 1 capital
	(to average assets)
	Consolidated	$	139,974	8.42	%	$	5,199	4	%	N/A		N/A
	First Business Bank	121,166		10.33		4,847		4		$	6,061	5	%
	First Business Bank — Milwaukee	17,721		7.56		709		4		886		5
	Alterra Bank	25,647		9.68		1,026		4		1,270		5
		Actual				Minimum Required for Capital Adequacy Purposes				Minimum Required to Be Well
										Capitalized Under Prompt Corrective Action Requirements
		Amount		Ratio		Amount		Ratio		Amount		Ratio
		(Dollars in Thousands)
	As of December 31, 2014
	Total capital
	(to risk-weighted assets)
	Consolidated	$	173,263	12.13	%	$	114,253	8	%	N/A		N/A
	First Business Bank	131,411		12.19		86,272		8		$	107,841	10	%
	First Business Bank — Milwaukee	19,128		12.47		12,274		8		15,343		10
	Alterra Bank	22,657		10.9		16,628		8		20,785		10
	Tier 1 capital
	(to risk-weighted assets)
	Consolidated	$	136,008	9.52		$	57,127	4	%	N/A		N/A
	First Business Bank	118,907		11.03		43,136		4		$	64,704	6	%
	First Business Bank — Milwaukee	17,641		11.5		6,137		4		9,206		6
	Alterra Bank	22,320		10.74		8,314		4		12,471		6
	Tier 1 capital
	(to average assets)
	Consolidated	$	136,008	8.71		$	62,490	4	%	N/A		N/A
	First Business Bank	118,907		10.13		46,960		4		$	58,700	5	%
	First Business Bank — Milwaukee	17,641		7.9		8,935		4		11,169		5
	Alterra Bank	22,320		9.01		9,910		4		12,388		5

Nature_of_Operations_and_Summa1

Nature of Operations and Summary of Significant Accounting Policies Nature of Operations and Summary of Significant Accounting Policies (Policies)	3 Months Ended
	Mar. 31, 2015
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 with 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, 2014.
Principles of Consolidation	The unaudited Consolidated Financial Statements include the accounts of the Corporation and its wholly-owned subsidiaries. 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. All significant intercompany balances and transactions have been eliminated in consolidation.
Use of Estimates, Policy	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 foreclosed property, lease residuals, property under operating leases, securities, income taxes and the level of the allowance for loan and lease losses.
Reclassification, Policy	Certain amounts in prior periods may have been reclassified to conform to the current presentation.
Subsequent Events, Policy	Subsequent events have been evaluated through the date of the issuance of the Consolidated Financial Statements. No significant subsequent events have occurred through this date requiring adjustment to the financial statements or disclosures.
Recent Accounting Pronouncements	Recent Accounting Pronouncements.
	In January 2014, the FASB issued ASU No. 2014-01, “ Investments - Equity Method Joint Ventures (Topic 323): Accounting for Investments in Qualified Affordable Housing Projects.” This ASU allows investors in Low Income Housing Tax Credit (LIHTC) programs that meet specified conditions to present the net tax benefits (net of the amortization of the cost of the investment) within income tax expense. The cost of the investments that meet the specified conditions will be amortized in proportion to (and over the same period as) the total expected tax benefits, including the tax credits and other tax benefits, as they are realized on the tax return. The ASU is effective for interim and annual periods beginning after December 15, 2014. The ASU is required to be applied retrospectively, if investors elect the proportional amortization method. However, if investors have existing LIHTC investments accounted for under the effective-yield method at adoption, they may continue to apply that method for those existing investments. The Corporation adopted the accounting standard in the first quarter of 2015 with no impact on its financial position or results of operations.
	In January 2014, the FASB issued ASU No. 2014-04, “Receivables - Troubled Debt Restructurings by Creditors (Subtopic 310-40): Reclassification of Residential Real Estate Collateralized Consumer Mortgage Loans upon Foreclosure (a consensus of the FASB Emerging Issues Task Force).” This ASU clarifies that an “in substance repossession or foreclosure” occurs, and a creditor is considered to have received physical possession of residential real estate property collateralizing a consumer mortgage loan, upon either (1) the creditor obtaining legal title to the residential real estate property upon completion of a foreclosure or (2) the borrower conveying all interest in the residential real estate property to the creditor to satisfy that loan through completion of a deed in lieu of foreclosure or through a similar agreement. In addition, the amendments require interim and annual disclosure of both the amount of foreclosed residential real estate property held by the creditor and the recorded investment in consumer mortgage loans collateralized by residential real estate property that are in the process of foreclosure in accordance with local requirements of the applicable jurisdiction. This amendment is effective for fiscal years, and interim periods within those years, beginning after December 15, 2014. An entity can elect to adopt the amendments using either a modified retrospective method or a prospective transition method. Early adoption is permitted. The Corporation adopted the accounting standard in the first quarter of 2015 with no impact on its financial position or results of operations.
	In August 2014, the FASB issued ASU 2014-14, “Receivables - Troubled Debt Restructuring by Creditors (Subtopic 310-40): Classification of Certain Government-Guaranteed Mortgage Loans upon Foreclosure.” This ASU will require creditors to derecognize certain foreclosed government-guaranteed mortgage loans and to recognize a separate other receivable that is measured at the amount the creditor expects to recover from the guarantor, and to treat the guarantee and the receivable as a single unit of account. The ASU is effective for interim and annual periods beginning after December 15, 2014. An entity can elect a prospective or a modified retrospective transition method, but must use the same transition method that it elected under FASB ASU No. 2014-04,  Early adoption is permitted. The Corporation adopted the accounting standard in the first quarter of 2015 with no impact on its financial position or results of operations.
	In May 2014, the FASB issued ASU No. 2014-09, “Revenue from Contracts with Customers (Topic 666).” 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 in exchange for those goods or services. The ASU is effective for interim and annual reporting periods beginning after December 15, 2016. 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 the Corporation’s consolidated financial position or results of operations.
	In June 2014, the FASB issued ASU No. 2014-12, “Accounting for Share-Based Payments When the Terms of an Award Provide That a Performance Target Could Be Achieved after the Requisite Service Period.” This ASU requires a reporting entity to treat a performance target that affects vesting and that could be achieved after the requisite service period as a performance condition. A reporting entity should apply FASB ASC Topic 718, Compensation-Stock Compensation, to awards with performance conditions that affect vesting. For all entities, ASU 2014-12 is effective for annual periods, and interim periods within those annual periods, beginning after December 15, 2015. Early adoption is permitted. ASU 2014-12 may be adopted either prospectively for share-based payment awards granted or modified on or after the effective date, or retrospectively, using a modified retrospective approach. The modified retrospective approach would apply to share-based payment awards outstanding as of the beginning of the earliest annual period presented in the financial statements on adoption, and to all new or modified awards thereafter. While the Corporation does not have any performance-based awards outstanding as of the reporting date, the Corporation’s equity incentive plan does allow for such awards. 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 the Corporation’s consolidated financial position or results of operations.
	In August 2014, the FASB issued ASU 2014-15, “Disclosure of Uncertainties about an Entity’s Ability to Continue as a Going Concern.” This ASU describes how an entity should assess its ability to meet obligations and sets rules for how this information should be disclosed in the financial statements. The standard provides accounting guidance that will be used along with existing auditing standards. The ASU is effective for interim and annual periods beginning after December 15, 2016. Early application 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 the Corporation’s consolidated financial position or results of operations.
	In February 2015, the FASB issued ASU 2015-02, “Consolidation (Topic 810): Amendments to the Consolidation Analysis.” This ASU changes the way reporting enterprises evaluate whether (a) they should consolidate limited partnerships and similar entities, (b) fees paid to a decision maker or service provider are variable interests in a variable interest entity (VIE), and (c) variable interests in a VIE held by related parties of the reporting enterprise require the reporting enterprise to consolidate the VIE. It also eliminates the VIE consolidation model based on majority exposure to variability that applied to certain investment companies and similar entities. The new guidance excludes money market funds that are required to comply with Rule 2a-7 of the Investment Company Act of 1940 and similar entities from the U.S. GAAP consolidation requirements. The new consolidation guidance is effective for public business entities for annual and interim periods in fiscal years beginning after December 15, 2015. At the effective date, all previous consolidation analysis that the guidance affects must be reconsidered. This includes the consolidation analysis for all VIEs and for all limited partnerships and similar entities that previously were consolidated by the general partner even though the entities were not VIEs. Early adoption is permitted, including early adoption in an interim period. If a reporting enterprise chooses to early adopt in an interim period, adjustments resulting from the revised consolidation analysis must be reflected as of the beginning of the fiscal year that includes that interim period. 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 the Corporation’s consolidated financial position or results of operations.

Earnings_Per_Common_Share_Poli

Earnings Per Common Share (Policies)	3 Months Ended
	Mar. 31, 2015
Earnings Per Share [Abstract]
Earnings Per Share, Policy	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 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.

ShareBased_Compensation_Polici

Share-Based Compensation (Policies)	3 Months Ended
	Mar. 31, 2015
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Share-based Compensation, Option and Incentive Plans Policy	Restricted Stock
	Under the Plan, the Corporation may grant restricted shares to plan participants, subject to forfeiture upon the occurrence of certain events until the dates specified in the participant’s award agreement. While the restricted shares are subject to forfeiture, the participant may exercise full voting rights and will receive all dividends and other distributions paid with respect to the restricted shares. The restricted shares granted under the Plan are subject to graded vesting. 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 share awards, the benefit of tax deductions in excess of recognized compensation expense is recognized as a financing cash flow activity.
	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 (together, “Stock Options”), restricted stock, restricted stock units, dividend equivalent units, and any other type of award permitted by the Plan. As of March 31, 2015, 177,663 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 treasury for shares delivered under the Plan.
	Stock Options
	The Corporation may grant Stock Options to senior executives and other employees under the Plan. Stock Options generally have an exercise price that is equal to the fair value of the common shares on the date the option is awarded. Stock Options granted under the Plan are subject to graded vesting, generally ranging from 4 years to 8 years, and have a contractual term of 10 years. For any new awards issued, compensation expense is recognized over the requisite service period for the entire award on a straight-line basis. No Stock Options have been granted since the Corporation became a reporting company under the Securities Exchange Act of 1934, as amended, and no Stock Options have been modified, repurchased or canceled since such time. For that reason, no stock-based compensation related to Stock Options was recognized in the Consolidated Financial Statements for the three months ended March 31, 2015 and 2014. As of March 31, 2015, all Stock Options granted and not previously forfeited have vested. The benefits of tax deductions as a result of disqualifying dispositions upon exercise of stock options are recognized as a financing cash flow.

Loan_and_Lease_Receivables_Imp1

Loan and Lease Receivables, Impaired Loans and Leases and Allowance for Loan and Lease Losses (Policies)	3 Months Ended
	Mar. 31, 2015
Receivables [Abstract]
Loans and Leases Receivable, Allowance for Loan Losses Policy	To determine the level and composition of the allowance for loan and lease losses, the Corporation breaks out the portfolio by segments and risk ratings. 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)	3 Months Ended
	Mar. 31, 2015
Fair Value Disclosures [Abstract]
Fair Value of Financial Instruments, Policy	The Corporation determines the fair market 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 that are collateral dependent were written down to their net realizable value of $8.4 million and $8.6 million at March 31, 2015 and December 31, 2014, respectively, through the establishment of specific reserves or by recording charge-offs when the carrying value exceeded the fair value. 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 discounts 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 10% - 100%. The weighted average of those unobservable inputs as of the measurement date of March 31, 2015 was 34%. The majority of the impaired loans in the Level 3 category are considered collateral dependent loans.
	Non-financial assets subject to measurement at fair value on a non-recurring basis included foreclosed properties and loan servicing rights.
	Loan servicing rights are recognized when they are acquired through sales of the guaranteed portion of SBA loans. When SBA loans are sold, servicing rights are initially recorded at fair value with the income statement effect recorded in gains on sales of loans. Loan servicing assets are subsequently measured using the amortization method, which requires servicing rights to be amortized into interest income in proportion to, and over the period of, the estimated future net servicing income of the underlying loans.
	As of March 31, 2015 and December 31, 2014, the estimated fair value of the Corporation’s loan servicing asset was $1.0 million and $943,000, respectively. This servicing asset represents the servicing rights retained upon sale of the guaranteed portion of certain SBA loans. The Corporation periodically reviews this portfolio for impairment and engages a third-party valuation firm to assess the fair value of the overall servicing rights portfolio.
	Foreclosed properties, upon initial recognition, are re-measured 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.
	As of March 31, 2015, there were no foreclosed properties supported by a Level 3 valuation. Subsequent impairments of foreclosed properties are recorded as a loss on foreclosed properties. Based upon an evaluation of value of certain of the Corporation’s foreclosed properties, no impairment losses were recognized for the three months ended March 31, 2015.
Foreclosed Assets Policy
Fair Value Measurement, Policy	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 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 amounts reported for cash and due from banks, interest-bearing deposits held by the Corporation, accrued interest receivable and accrued interest payable approximate fair value because of their immediate availability and because they do not present unanticipated credit concerns. The carrying value of commercial paper, included in the cash and cash equivalents category, approximates fair value due to the short-term maturity structure of the instrument. As of March 31, 2015 and December 31, 2014, the Corporation held $15.4 million and $10.4 million, respectively, of commercial paper. The fair value of commercial paper is considered a Level 3 input due to the lack of available independent pricing sources. The carrying value of brokered certificates of deposit purchased is equivalent to the purchase price of the instruments as the Corporation has not elected a fair value option 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 March 31, 2015 and December 31, 2014, the Corporation held $6.4 million and $6.9 million, respectively, of brokered certificates of deposits.
	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 to another pricing source on a quarterly basis to review for reasonableness. In addition, the Corporation reviews the third-party valuation methodology on a periodic basis. Any significant differences in valuation 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 residential real estate mortgage loans and the guaranteed portion of SBA loans, are carried at the lower of cost or estimated fair value. The estimated fair value was based on what secondary markets are currently offering for portfolios with similar characteristics.
	Loans and Leases: 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 Banks’ 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 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.
	Cash Surrender Value of 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.
	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 Banks for debt with similar terms and remaining maturities are used to estimate fair value of existing debt.
	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.
	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.
	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_Instrumen1

Derivative Financial Instruments (Policies)	3 Months Ended
	Mar. 31, 2015
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivatives, Policy	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 considers 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)	3 Months Ended
	Mar. 31, 2015
Earnings Per Share [Abstract]
Schedule of Earnings Per Share, Basic and Diluted
		For the Three Months Ended March 31,
		2015		2014
		(Dollars in Thousands, Except Per Share Data)
	Basic earnings per common share
	Net income	$	4,192	$	3,337
	Less: earnings allocated to participating securities	73		72
	Basic earnings allocated to common shareholders	$	4,119	$	3,265
	Weighted-average common shares outstanding, excluding participating securities	4,260,249		3,859,503
	Basic earnings per common share	$	0.97	$	0.85
	Diluted earnings per common share
	Earnings allocated to common shareholders	$	4,119	$	3,265
	Reallocation of undistributed earnings	—		—
	Diluted earnings allocated to common shareholders	$	4,119	$	3,265
	Weighted-average common shares outstanding, excluding participating securities	4,260,249		3,859,503
	Dilutive effect of share-based awards	2,265		21,058
	Weighted-average diluted common shares outstanding, excluding participating securities	4,262,514		3,880,561
	Diluted earnings per common share	$	0.97	$	0.84

ShareBased_Compensation_Tables

Share-Based Compensation (Tables)	3 Months Ended
	Mar. 31, 2015
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Schedule of Share-based Compensation, Stock Options, Activity	Stock Option activity for the year ended December 31, 2014 and three months ended March 31, 2015 was as follows:
			Options		Weighted		Weighted
					Average		Average
					Exercise Price		Remaining
							Contractual
							Life (Years)
	Outstanding at December 31, 2013		51,000		$	24.24	0.88
	Granted		—		—
	Exercised		(39,000	)	24
	Expired		—		—
	Forfeited		—		—
	Outstanding at December 31, 2014		12,000		$	25	0.13
	Exercisable at December 31, 2014		12,000		$	25	0.13
	Outstanding as of December 31, 2014		12,000		$	25	0.13
	Granted		—		—
	Exercised		(12,000	)	25
	Expired		—		—
	Forfeited		—		—
	Outstanding as of March 31, 2015		—		$	—
	Exercisable at March 31, 2015		—		$	—
Schedule of Share-based Compensation, Restricted Stock and Restricted Stock Units Activity	Restricted share activity for the year ended December 31, 2014 and the three months ended March 31, 2015 was as follows:
			Number of		Weighted Average
			Restricted Shares		Grant-Date
					Fair Value
	Nonvested balance as of December 31, 2013		84,709		$	23.1
	Granted		32,261		44.98
	Vested		(39,471	)	19.71
	Forfeited		—		—
	Nonvested balance as of December 31, 2014		77,499		33.94
	Granted		500		46.6
	Vested		(373	)	40.29
	Forfeited		(3,394	)	26.44
	Nonvested balance as of March 31, 2015		74,232		$	34.33
Schedule of Share-based Compensation Expense	For the three months ended March 31, 2015 and 2014, share-based compensation expense related to restricted stock included in the Consolidated Statements of Income was as follows:
		For the Three Months Ended March 31,
		2015			2014
		(Dollars in Thousands)
	Share-based compensation expense	$	234		$	193

Securities_Tables

Securities (Tables)	3 Months Ended
	Mar. 31, 2015
Investments, Debt and Equity Securities [Abstract]
Schedule of Available-for-sale Securities	The amortized cost and estimated 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 March 31, 2015
		Amortized cost		Gross		Gross			Estimated
				unrealized		unrealized			fair value
				holding gains		holding losses
		(In Thousands)
	Available-for-sale:
	U.S. Government agency obligations - government-sponsored enterprises	$	8,046	$	29	$	(28	)	$	8,047
	Municipal obligations	569		9		—			578
	Asset-backed securities	1,494		—		—			1,494
	Collateralized mortgage obligations - government issued	61,418		1,338		(87		)	62,669
	Collateralized mortgage obligations - government-sponsored enterprises	69,597		631		(65		)	70,163
		$	141,124	$	2,007	$	(180	)	$	142,951
		As of December 31, 2014
		Amortized cost		Gross		Gross			Estimated
				unrealized		unrealized			fair value
				holding gains		holding losses
		(In Thousands)
	Available-for-sale:
	U.S. Government agency obligations - government-sponsored enterprises	$	9,046	$	—	$	(81	)	$	8,965
	Municipal obligations	573		5		—			578
	Asset-backed securities	1,514		$	—	(4		)	1,510
	Collateralized mortgage obligations - government issued	67,740		1,390		(256		)	68,874
	Collateralized mortgage obligations - government-sponsored enterprises	64,763		234		(226		)	64,771
		$	143,636	$	1,629	$	(567	)	$	144,698
Schedule of Held-to-maturity Securities	The amortized cost and estimated fair value of securities held-to-maturity and the corresponding amounts of gross unrecognized gains and losses were as follows:
		As of March 31, 2015
		Amortized cost		Gross		Gross			Estimated
				unrecognized		unrecognized			fair value
				holding gains		holding losses
		(In Thousands)
	Held-to-maturity:
	U.S. Government agency obligations - government-sponsored enterprises	$	1,491	$	6	$	(1	)	$	1,496
	Municipal obligations	16,075		231		(7		)	16,299
	Collateralized mortgage obligations - government issued	13,889		185		—			14,074
	Collateralized mortgage obligations - government-sponsored enterprises	9,144		134		—			9,278
		$	40,599	$	556	$	(8	)	$	41,147
		As of December 31, 2014
		Amortized cost		Gross		Gross			Estimated
				unrecognized		unrecognized			fair value
				holding gains		holding losses
		(In Thousands)
	Held-to-maturity:
	U.S. Government agency obligations - government-sponsored enterprises	$	1,490	$	—	$	(17	)	$	1,473
	Municipal obligations	16,088		85		(18		)	16,155
	Collateralized mortgage obligations - government issued	14,505		57		(31		)	14,531
	Collateralized mortgage obligations - government-sponsored enterprises	9,480		74		(19		)	9,535
		$	41,563	$	216	$	(85	)	$	41,694
Investments Classified by Contractual Maturity	The amortized cost and estimated fair value of securities by contractual maturity at March 31, 2015 are shown below. Actual maturities may differ from contractual maturities because issuers have the right to call or prepay certain obligations without call or prepayment penalties.
		Available-for-Sale				Held-to-Maturity
		Amortized cost		Estimated		Amortized cost			Estimated
				fair value					fair value
		(In Thousands)
	Due in one year or less	$	—	$	—	$	—		$	—
	Due in one year through five years	9,341		9,375		3,261			3,272
	Due in five through ten years	75,842		76,931		13,330			13,532
	Due in over ten years	55,941		56,645		24,008			24,343
		$	141,124	$	142,951	$	40,599		$	41,147
Schedule of Unrealized Loss on Investments	A summary of unrecognized loss information for securities held-to-maturity, categorized by security type follows:
		As of March 31, 2015
		Less than 12 months				12 months or longer					Total
		Fair value		Unrecognized		Fair value			Unrecognized		Fair value		Unrecognized
				losses					losses				losses
		(In Thousands)
	Held-to-maturity:
	U.S. Government agency obligations - government-sponsored enterprises	$	997	$	1	$	—		$	—	$	997	$	1
	Municipal obligations	1,256		7		—			—		1,256		7
		$	2,253	$	8	$	—		$	—	$	2,253	$	8
		As of December 31, 2014
		Less than 12 months				12 months or longer					Total
		Fair value		Unrecognized		Fair value			Unrecognized		Fair value		Unrecognized
				losses					losses				losses
		(In Thousands)
	Held-to-maturity:
	U.S. Government agency obligations - government-sponsored enterprises	$	1,490	$	17	$	—		$	—	$	1,490	$	17
	Municipal obligations	2,222		18		—			—		2,222		18
	Collateralized mortgage obligations - government issued	3,247		31		—			—		3,247		31
	Collateralized mortgage obligations - government-sponsored enterprises	3,076		19		—			—		3,076		19
		$	10,035	$	85	$	—		$	—	$	10,035	$	85
	A summary of unrealized loss information for securities available-for-sale, categorized by security type follows:
		As of March 31, 2015
		Less than 12 months				12 months or longer					Total
		Fair value		Unrealized		Fair value			Unrealized		Fair value		Unrealized
				losses					losses				losses
		(In Thousands)
	Available-for-sale:
	U.S. Government agency obligations - government-sponsored enterprises	$	—	$	—	$	3,722		$	28	$	3,722	$	28
	Asset-backed securities	—		—		1,494			—		1,494		—
	Collateralized mortgage obligations - government issued	—		—		8,669			87		8,669		87
	Collateralized mortgage obligations - government-sponsored enterprises	4,853		5		4,859			60		9,712		65
		$	4,853	$	5	$	18,744		$	175	$	23,597	$	180
		As of December 31, 2014
		Less than 12 months				12 months or longer					Total
		Fair value		Unrealized		Fair value			Unrealized		Fair value		Unrealized
				losses					losses				losses
		(In Thousands)
	Available-for-sale:
	U.S. Government agency obligations - government-sponsored enterprises	$	3,486	$	12	$	5,479		$	69	$	8,965	$	81
	Asset-backed securities	—		$	—	1,510			4		1,510		4
	Collateralized mortgage obligations - government issued	9,201		50		9,536			206		18,737		256
	Collateralized mortgage obligations - government-sponsored enterprises	29,498		97		4,993			129		34,491		226
		$	42,185	$	159	$	21,518		$	408	$	63,703	$	567

Loan_and_Lease_Receivables_Imp2

Loan and Lease Receivables, Impaired Loans and Leases and Allowance for Loan and Lease Losses (Tables)	3 Months Ended
	Mar. 31, 2015
Receivables [Abstract]
Loan Composition Schedule	Loan and lease receivables consist of the following:
			March 31,				December 31,
			2015				2014
			(In Thousands)
	Commercial real estate
	Commercial real estate — owner occupied		$	163,982			$	163,884
	Commercial real estate — non-owner occupied		404,931				417,962
	Construction and land development		121,211				121,160
	Multi-family		84,163				72,578
	1-4 family (1)		40,159				36,182
	Total commercial real estate		814,446				811,766
	Commercial and industrial (2)		426,413				416,654
	Direct financing leases, net		31,644				34,165
	Consumer and other
	Home equity and second mortgages		9,032				7,866
	Other		16,532				11,341
	Total consumer and other		25,564				19,207
	Total gross loans and leases receivable		1,298,067				1,281,792
	Less:
	Allowance for loan and lease losses		14,694				14,329
	Deferred loan fees		1,131				1,025
	Loans and leases receivable, net		$	1,282,242			$	1,266,438
	-1	Includes residential real estate loans held for sale totaling $1.3 million as of March 31, 2015 and December 31, 2014.
	-2	Includes guaranteed portion of SBA loans held for sale totaling $1.1 million as of March 31, 2015.
Schedule of Fair Value of Credit Impaired Loans Acquired	The following table reflects the contractually required payments receivable, cash flows expected to be collected and fair value of the Corporation’s purchased credit impaired loans as of March 31, 2015 and December 31, 2014:
		March 31,				December 31,
		2015				2014
		(In Thousands)
	Contractually required payments	$	6,783			$	6,874
	Less: nonaccretable difference	(2,252		)		(2,173		)
	Cash flows expected to be collected	4,531				4,701
	Less: accretable yield	(566		)		(676		)
	Fair value of purchase credit impaired loans	$	3,965			$	4,025
Accretable Yield Rollforward	The following table presents a rollforward of the Corporation’s accretable yield as of March 31, 2015 and December 31, 2014:
		As of and for the Three Months Ended March 31, 2015				As of and for the Year Ended December 31, 2014
		(In Thousands)
	Accretable yield at the beginning of period	$	676			$	683
	Less: Accretion	(4		)		(7		)
	Reclassification to nonaccretable difference	(106		)		—
	Outstanding accretable yield	$	566			$	676
Financing Receivable by Credit Quality Indicators	The following information illustrates 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 March 31, 2015 and December 31, 2014:
			Category
	As of March 31, 2015		I				II				III				IV			Total
			(Dollars in Thousands)
	Commercial real estate:
	Commercial real estate — owner occupied		$	128,449			$	18,511			$	16,454			$	568		$	163,982
	Commercial real estate — non-owner occupied		368,016				25,027				10,921				967			404,931
	Construction and land development		100,815				8,519				6,810				5,067			121,211
	Multi-family		82,500				746				903				14			84,163
	1-4 family		30,322				4,746				3,313				1,778			40,159
	Total commercial real estate		710,102				57,549				38,401				8,394			814,446
	Commercial and industrial		380,318				22,493				21,797				1,805			426,413
	Direct financing leases, net		29,926				1,469				249				—			31,644
	Consumer and other:
	Home equity and second mortgages		8,245				201				163				423			9,032
	Other		15,830				—				—				702			16,532
	Total consumer and other		24,075				201				163				1,125			25,564
	Total gross loans and leases receivable		$	1,144,421			$	81,712			$	60,610			$	11,324		$	1,298,067
	Category as a % of total portfolio		88.17		%		6.29		%		4.67		%		0.87		%	100		%
			Category
	As of December 31, 2014		I				II				III				IV			Total
			(Dollars in Thousands)
	Commercial real estate:
	Commercial real estate — owner occupied		$	131,094			$	15,592			$	16,621			$	577		$	163,884
	Commercial real estate — non-owner occupied		378,671				20,823				17,498				970			417,962
	Construction and land development		100,934				8,193				6,876				5,157			121,160
	Multi-family		70,897				751				913				17			72,578
	1-4 family		25,997				5,278				3,336				1,571			36,182
	Total commercial real estate		707,593				50,637				45,244				8,292			811,766
	Commercial and industrial		383,755				18,524				12,026				2,349			416,654
	Direct financing leases, net		32,756				1,120				289				—			34,165
	Consumer and other:
	Home equity and second mortgages		7,039				205				189				433			7,866
	Other		10,570				50				—				721			11,341
	Total consumer and other		17,609				255				189				1,154			19,207
	Total gross loans and leases receivable		$	1,141,713			$	70,536			$	57,748			$	11,795		$	1,281,792
	Category as a % of total portfolio		89.07		%		5.5		%		4.51		%		0.92		%	100		%
Past Due Financing Receivables	The delinquency aging of the loan and lease portfolio by class of receivable as of March 31, 2015 and December 31, 2014 is as follows:
	As of March 31, 2015		30-59				60-89				Greater				Total past due			Current			Total loans
			days past due				days past due				than 90
											days past due
			(Dollars in Thousands)
	Accruing loans and leases
	Commercial real estate:
	Owner occupied		$	—			$	—			$	—			$	—		$	163,489		$	163,489
	Non-owner occupied		—				—				—				—			404,645			404,645
	Construction and land development		—				—				—				—			116,362			116,362
	Multi-family		—				—				—				—			84,149			84,149
	1-4 family		—				—				—				—			39,249			39,249
	Commercial and industrial		—				—				—				—			424,639			424,639
	Direct financing leases, net		—				—				—				—			31,644			31,644
	Consumer and other:
	Home equity and second mortgages		—				—				—				—			8,709			8,709
	Other		—				—				—				—			15,829			15,829
	Total		—				—				—				—			1,288,715			1,288,715
	Non-accruing loans and leases
	Commercial real estate:
	Owner occupied		$	—			$	—			$	—			$	—		$	493		$	493
	Non-owner occupied		—				24				214				238			48			286
	Construction and land development		—				—				193				193			4,656			4,849
	Multi-family		—				—				—				—			14			14
	1-4 family		238				—				296				534			376			910
	Commercial and industrial		1				81				1,647				1,729			45			1,774
	Direct financing leases, net		—				—				—				—			—			—
	Consumer and other:
	Home equity and second mortgages		—				52				—				52			271			323
	Other		—				—				703				703			—			703
	Total		239				157				3,053				3,449			5,903			9,352
	Total loans and leases
	Commercial real estate:
	Owner occupied		$	—			$	—			$	—			$	—		$	163,982		$	163,982
	Non-owner occupied		—				24				214				238			404,693			404,931
	Construction and land development		—				—				193				193			121,018			121,211
	Multi-family		—				—				—				—			84,163			84,163
	1-4 family		238				—				296				534			39,625			40,159
	Commercial and industrial		1				81				1,647				1,729			424,684			426,413
	Direct financing leases, net		—				—				—				—			31,644			31,644
	Consumer and other:
	Home equity and second mortgages		—				52				—				52			8,980			9,032
	Other		—				—				703				703			15,829			16,532
	Total		$	239			$	157			$	3,053			$	3,449		$	1,294,618		$	1,298,067
	Percent of portfolio		0.02		%		0.01		%		0.24		%		0.27		%	99.73		%	100		%
	As of December 31, 2014		30-59				60-89				Greater				Total past due			Current			Total loans
			days past due				days past due				than 90
											days past due
			(Dollars in Thousands)
	Accruing loans and leases
	Commercial real estate:
	Owner occupied		$	—			$	—			$	—			$	—		$	163,384		$	163,384
	Non-owner occupied		—				—				—				—			417,676			417,676
	Construction and land development		—				—				—				—			116,228			116,228
	Multi-family		—				—				—				—			72,561			72,561
	1-4 family		—				—				—				—			35,492			35,492
	Commercial and industrial		—				—				—				—			414,336			414,336
	Direct financing leases, net		—				—				—				—			34,165			34,165
	Consumer and other:
	Home equity and second mortgages		—				—				—				—			7,537			7,537
	Other		—				—				—				—			10,621			10,621
	Total		—				—				—				—			1,272,000			1,272,000
	Non-accruing loans and leases
	Commercial real estate:
Owner occupied		$	—			$	—			$	—			$	—		$	500		$	500
Non-owner occupied		—				215				—				215			71			286
Construction and land development		—				193				—				193			4,739			4,932
Multi-family		—				—				—				—			17			17
1-4 family		—				106				306				412			278			690
Commercial and industrial		364				146				736				1,246			1,072			2,318
Direct financing leases, net		—				—				—				—			—			—
Consumer and other:
Home equity and second mortgages		—				—				—				—			329			329
Other		—				—				720				720			—			720
Total		364				660				1,762				2,786			7,006			9,792
Total loans and leases
Commercial real estate:
Owner occupied		$	—			$	—			$	—			$	—		$	163,884		$	163,884
Non-owner occupied		—				215				—				215			417,747			417,962
Construction and land development		—				193				—				193			120,967			121,160
Multi-family		—				—				—				—			72,578			72,578
1-4 family		—				106				306				412			35,770			36,182
Commercial and industrial		364				146				736				1,246			415,408			416,654
Direct financing leases, net		—				—				—				—			34,165			34,165
Consumer and other:
Home equity and second mortgages		—				—				—				—			7,866			7,866
Other		—				—				720				720			10,621			11,341
Total		$	364			$	660			$	1,762			$	2,786		$	1,279,006		$	1,281,792
Percent of portfolio		0.03		%		0.05		%		0.14		%		0.22		%	99.78		%	100		%
Schedule of Financing Receivables, Non Accrual Status	The Corporation’s total impaired assets consisted of the following at March 31, 2015 and December 31, 2014, respectively.
			March 31,				December 31,
			2015				2014
			(Dollars in Thousands)
	Non-accrual loans and leases
	Commercial real estate:
	Commercial real estate — owner occupied		$	493			$	500
	Commercial real estate — non-owner occupied		286				286
	Construction and land development		4,849				4,932
	Multi-family		14				17
	1-4 family		910				690
	Total non-accrual commercial real estate		6,552				6,425
	Commercial and industrial		1,774				2,318
	Direct financing leases, net		—				—
	Consumer and other:
	Home equity and second mortgages		323				329
	Other		703				720
	Total non-accrual consumer and other loans		1,026				1,049
	Total non-accrual loans and leases		9,352				9,792
	Foreclosed properties, net		1,566				1,693
	Total non-performing assets		10,918				11,485
	Performing troubled debt restructurings		1,972				2,003
	Total impaired assets		$	12,890			$	13,488
			March 31,			December 31,
			2015			2014
	Total non-accrual loans and leases to gross loans and leases		0.72	%		0.76	%
	Total non-performing assets to total gross loans and leases plus foreclosed properties, net		0.84			0.89
	Total non-performing assets to total assets		0.65			0.7
	Allowance for loan and lease losses to gross loans and leases		1.13			1.12
	Allowance for loan and lease losses to non-accrual loans and leases		157.12			146.33
Troubled Debt Restructurings on Financing Receivables
			As of March 31, 2015										As of December 31, 2014
			Number		Pre-Modification				Post-Modification				Number		Pre-Modification			Post-Modification
			of		Recorded				Recorded				of		Recorded			Recorded
			Loans		Investment				Investment				Loans		Investment			Investment
			(Dollars in Thousands)
	Troubled debt restructurings:
	Commercial real estate
	Commercial real estate — owner occupied		2		$	624			$	568			2		$	624		$	577
	Commercial real estate — non-owner occupied		5		1,095				905				5		1,095			970
	Construction and land development		4		6,260				5,051				4		6,260			5,157
	Multi-family		1		184				14				1		184			17
	1-4 family		16		2,119				1,518				16		2,119			1,368
	Commercial and industrial		4		361				151				4		361			155
	Direct financing leases, net		—		—				—				—		—			—
	Consumer and other:
	Home equity and second mortgages		6		772				398				6		772			431
	Other		2		2,080				702				2		2,080			721
	Total		40		$	13,495			$	9,307			40		$	13,495		$	9,396
Troubled Debt Restructurings by Modification Type	As of March 31, 2015 and December 31, 2014, the Corporation’s troubled debt restructurings grouped by type of concession were as follows:
			As of March 31, 2015							As of December 31, 2014
			Number			Recorded Investment				Number			Recorded Investment
			of							of
			Loans							Loans
			(Dollars in Thousands)
	Commercial real estate
	Extension of term		1			$	35			1			$	39
	Interest rate concession		1			56				1			65
	Combination of extension and interest rate concession		26			7,965				26			7,984
	Commercial and industrial
	Combination of extension and interest rate concession		4			151				4			155
	Consumer and other
	Extension of term		3			735				3			753
	Combination of extension and interest rate concession		5			365				5			400
	Total		40			$	9,307			40			$	9,396
Impaired Financing Receivables	The following represents additional information regarding the Corporation’s impaired loans and leases by class:
			Impaired Loans and Leases
			As of and for the Three Months Ended March 31, 2015
			Recorded				Unpaid				Impairment				Average			Foregone			Interest			Net
			investment				principal				reserve				recorded			interest			income			foregone
							balance								investment(1)			income			recognized			interest
																								income
			(In Thousands)
	With no impairment reserve recorded:
	Commercial real estate:
	Owner occupied		$	568			$	568			$	—			$	573		$	6		$	—		$	6
	Non-owner occupied		919				919				—				921			3			—			3
	Construction and land development		5,068				7,738				—				5,135			37			—			37
	Multi-family		14				380				—				15			13			—			13
	1-4 family		1,351				1,361				—				1,459			10			—			10
	Commercial and industrial		1,482				2,406				—				2,252			74			1			73
	Direct financing leases, net		—				—				—				—			—			—			—
	Consumer and other:
	Home equity and second mortgages		371				371				—				375			4			—			4
	Other		702				1,369				—				712			20			—			20
	Total		10,475				15,112				—				11,442			167			1			166
	With impairment reserve recorded:
	Commercial real estate:
	Owner occupied		$	—			$	—			$	—			$	—		$	—		$	—		$	—
	Non-owner occupied		48				88				48				48			1			—			1
	Construction and land development		—				—				—				—			—			—			—
	Multi-family		—				—				—				—			—			—			—
	1-4 family		427				427				159				386			5			—			5
	Commercial and industrial		322				322				132				33			5			—			5
	Direct financing leases, net		—				—				—				—			—			—			—
	Consumer and other:
	Home equity and second mortgages		52				52				52				52			1			—			1
	Other		—				—				—				—			—			—			—
	Total		849				889				391				519			12			—			12
	Total:
	Commercial real estate:
	Owner occupied		$	568			$	568			$	—			$	573		$	6		$	—		$	6
	Non-owner occupied		967				1,007				48				969			4			—			4
	Construction and land development		5,068				7,738				—				5,135			37			—			37
	Multi-family		14				380				—				15			13			—			13
	1-4 family		1,778				1,788				159				1,845			15			—			15
	Commercial and industrial		1,804				2,728				132				2,285			79			1			78
	Direct financing leases, net		—				—				—				—			—			—			—
	Consumer and other:
	Home equity and second mortgages		423				423				52				427			5			—			5
	Other		702				1,369				—				712			20			—			20
	Grand total		$	11,324			$	16,001			$	391			$	11,961		$	179		$	1		$	178
	-1	Average recorded investment is calculated primarily using daily average balances.
			Impaired Loans and Leases
			As of and for the Year Ended December 31, 2014
			Recorded				Unpaid				Impairment				Average			Foregone			Interest			Net
			investment				principal				reserve				recorded			interest			income			Foregone
							balance								investment(1)			income			recognized			Interest
																								Income
			(In Thousands)
	With no impairment reserve recorded:
	Commercial real estate:
	Owner occupied		$	577			$	577			$	—			$	484		$	30		$	79		$	(49	)
	Non-owner occupied		921				921				—				349			22			—			22
	Construction and land development		5,157				7,828				—				5,285			155			—			155
	Multi-family		17				384				—				24			53			—			53
	1-4 family		1,181				1,218				—				380			15			12			3
	Commercial and industrial		2,316				2,926				—				6,141			463			649			(186		)
	Direct financing leases, net		—				—				—				—			—			—			—
Consumer and other:
Home equity and second mortgages		380				380				—				495			18			—			18
Other		721				1,389				—				768			87			—			87
Total		11,270				15,623				—				13,926			843			740			103
With impairment reserve recorded:
Commercial real estate:
Owner occupied		$	—			$	—			$	—			$	—		$	—		$	—		$	—
Non-owner occupied		49				89				49				52			4			—			4
Construction and land development		—				—				—				—			—			—			—
Multi-family		—				—				—				—			—			—			—
1-4 family		390				390				155				405			18			—			18
Commercial and industrial		33				33				33				34			—			—			—
Direct financing leases, net		—				—				—				—			—			—			—
Consumer and other:
Home equity and second mortgages		53				53				53				57			5			—			5
Other		—				—				—				—			—			—			—
Total		525				565				290				548			27			—			27
Total:
Commercial real estate:
Owner occupied		$	577			$	577			$	—			$	484		$	30		$	79		$	(49	)
Non-owner occupied		970				1,010				49				401			26			—			26
Construction and land development		5,157				7,828				—				5,285			155			—			155
Multi-family		17				384				—				24			53			—			53
1-4 family		1,571				1,608				155				785			33			12			21
Commercial and industrial		2,349				2,959				33				6,175			463			649			(186		)
Direct financing leases, net		—				—				—				—			—			—			—
Consumer and other:
Home equity and second mortgages		433				433				53				552			23			—			23
Other		721				1,389				—				768			87			—			87
Grand total		$	11,795			$	16,188			$	290			$	14,474		$	870		$	740		$	130
-1	Average recorded investment is calculated primarily using daily average balances.
Allowance for Credit Losses on Financing Receivables	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 March 31, 2015
			Commercial				Commercial				Consumer				Direct			Total
			real estate				and				and other				financing
							industrial								leases, net
			(Dollars in Thousands)
	Allowance for credit losses:
	Beginning balance		$	8,619			$	5,067			$	218			$	425		$	14,329
	Charge-offs		(11		)		(313		)		—				—			(324		)
	Recoveries		2				—				3				—			5
	Provision		99				548				67				(30		)	684
	Ending balance		$	8,709			$	5,302			$	288			$	395		$	14,694
	Ending balance: individually evaluated for impairment		$	207			$	33			$	52			$	—		$	292
	Ending balance: collectively evaluated for impairment		$	8,502			$	5,170			$	236			$	395		$	14,303
	Ending balance: loans acquired with deteriorated credit quality		$	—			$	99			$	—			$	—		$	99
	Loans and lease receivables:
	Ending balance, gross		$	814,446			$	426,413			$	25,564			$	31,644		$	1,298,067
	Ending balance: individually evaluated for impairment		$	5,253			$	1,154			$	890			$	—		$	7,297
	Ending balance: collectively evaluated for impairment		$	806,051			$	424,608			$	24,440			$	31,644		$	1,286,743
	Ending balance: loans acquired with deteriorated credit quality		$	3,142			$	651			$	234			$	—		$	4,027
	Allowance as % of gross loans		1.07		%		1.24		%		1.13		%		1.25		%	1.13		%
			As of and for the Three Months Ended March 31, 2014
			Commercial				Commercial				Consumer				Direct			Total
			real estate				and				and other				financing
							industrial								leases, net
			(Dollars in Thousands)
	Allowance for credit losses:
	Beginning balance		$	9,055			$	4,235			$	273			$	338		$	13,901
	Charge-offs		—				—				—				—			—
	Recoveries		15				—				5				—			20
	Provision		(98		)		284				(2		)		(4		)	180
	Ending balance		$	8,972			$	4,519			$	276			$	334		$	14,101
	Ending balance: individually evaluated for impairment		$	208			$	239			$	60			$	—		$	507
	Ending balance: collectively evaluated for impairment		$	8,764			$	4,280			$	216			$	334		$	13,594
	Ending balance: loans acquired with deteriorated credit quality		$	—			$	—			$	—			$	—		$	—
	Loans and lease receivables:
	Ending balance, gross		$	638,701			$	303,630			$	17,526			$	26,364		$	986,221
	Ending balance: individually evaluated for impairment		$	5,291			$	6,657			$	1,344			$	—		$	13,292
	Ending balance: collectively evaluated for impairment		$	632,006			$	296,973			$	16,182			$	26,364		$	971,525
	Ending balance: loans acquired with deteriorated credit quality		$	1,404			$	—			$	—			$	—		$	1,404
	Allowance as % of gross loans		1.4		%		1.49		%		1.57		%		1.27		%	1.43		%

Deposits_Tables

Deposits (Tables)	3 Months Ended
	Mar. 31, 2015
Deposits [Abstract]
Deposits	The composition of deposits at March 31, 2015 and December 31, 2014 was as follows. Weighted average balances represent year-to-date averages.
		March 31, 2015						December 31, 2014
		Balance		Weighted		Weighted		Balance		Weighted		Weighted
				average		average rate				average		average rate
				balance						balance
		(Dollars in Thousands)
	Non-interest-bearing transaction accounts	$	194,277	$	200,274	—	%	$	204,328	$	154,687	—	%
	Interest-bearing transaction accounts	102,739		107,311		0.22		104,199		83,508		0.22
	Money market accounts	642,560		625,888		0.55		575,766		493,322		0.52
	Certificates of deposit	115,252		124,377		0.71		126,635		60,284		0.89
	Wholesale deposits	430,973		424,171		1.36		427,340		416,202		1.49
	Total deposits	$	1,485,801	$	1,482,021	0.69		$	1,438,268	$	1,208,003	0.78

FHLB_Advances_Other_Borrowings1

FHLB Advances, Other Borrowings and Junior Subordinated Notes Payable (Tables)	3 Months Ended
	Mar. 31, 2015
Debt Disclosure [Abstract]
Schedule of Debt	The composition of borrowed funds at March 31, 2015 and December 31, 2014 was as follows. Weighted average balances represent year-to-date averages.
		March 31, 2015						December 31, 2014
		Balance		Weighted		Weighted		Balance		Weighted		Weighted
				average		average				average		average
				balance		rate				balance		rate
		(Dollars in Thousands)
	Federal funds purchased	$	—	$	—	—	%	$	—	$	237	0.82	%
	FHLB advances and other borrowings	10,012		10,042		1.51		10,058		5,093		0.56
	Line of credit	1,510		521		3.24		1,010		13		3.3
	Subordinated notes payable	22,926		22,926		6.94		22,926		13,362		7.07
	Junior subordinated notes	10,315		10,315		10.64		10,315		10,315		10.78
		$	44,763	$	43,804	6.55		$	44,309	$	29,020	7.24
	Short-term borrowings	$	4,010					$	2,010
	Long-term borrowings	40,753						42,299
		$	44,763					$	44,309

Fair_Value_Disclosures_Tables

Fair Value Disclosures (Tables)	3 Months Ended
	Mar. 31, 2015
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:
			Fair Value Measurements Using
	March 31, 2015		Level 1			Level 2		Level 3		Total
			(In Thousands)
	Assets:
	Securities available-for-sale:
	Municipal obligations		$	—		$	578	$	—	$	578
	Asset backed securities		$	—		$	1,494	$	—	$	1,494
	U.S. Government agency obligations - government-sponsored enterprises		—			8,047		—		8,047
	Collateralized mortgage obligations - government issued		—			62,669		—		62,669
	Collateralized mortgage obligations - government-sponsored enterprises		—			70,163		—		70,163
	Interest rate swaps		—			956		—		956
	Liabilities:									—
	Interest rate swaps		$	—		$	956	$	—	$	956
			Fair Value Measurements Using
	December 31, 2014		Level 1			Level 2		Level 3		Total
			(In Thousands)
	Assets:
	Securities available-for-sale:
	Municipal obligations		$	—		$	578	$	—	$	578
	Asset backed securities		—			1,510		—		1,510
	U.S. Government agency obligations - government-sponsored enterprises		—			8,965		—		8,965
	Collateralized mortgage obligations - government issued		—			68,874		—		68,874
	Collateralized mortgage obligations - government-sponsored enterprises		—			64,771		—		64,771
	Interest rate swaps		—			575		—		575
	Liabilities:
	Interest rate swaps		$	—		$	575	$	—	$	575
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:
						As of and for the Three Months Ended March 31, 2015
			Balance at			Fair Value Measurements Using						Total
												Gains
			March 31,			Level 1		Level 2		Level 3		(Losses)
			2015
			(In Thousands)
	Impaired loans		$	8,363		$	—	$	6,739	$	1,624	$	—
	Foreclosed properties		1,566			—		1,566		—		—
	Loan servicing rights		1,027			—		—		1,027		—
						As of and for the Year Ended December 31, 2014
			Balance at			Fair Value Measurements Using						Total
												Gains
			December 31,			Level 1		Level 2		Level 3		(Losses)
			2014
			(In Thousands)
	Impaired loans		$	8,565		$	—	$	7,025	$	1,540	$	—
	Foreclosed properties		1,693			—		1,693		—		(4		)
	Loan servicing rights		943			—		—		943		—
Foreclosed Properties	The activity of the Corporation’s foreclosed properties is summarized as follows:
		As of and for the Three Months Ended March 31, 2015			As of and for the Year Ended December 31, 2014
		(In Thousands)
	Foreclosed properties at the beginning of the period	$	1,693		$	333
	Foreclosed properties acquired in acquisition, at fair value	—			1,605
	Proceeds from sale of foreclosed properties	(143		)	(255		)
	Net gain on sale of foreclosed properties	16			14
	Impairment valuation	—			(4		)
	Foreclosed properties at the end of the period	$	1,566		$	1,693
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:
			March 31, 2015
			Carrying			Fair Value
			Amount
						Total		Level 1		Level 2		Level 3
			(In Thousands)
	Financial assets:
	Cash and cash equivalents		$	141,887		$	141,887	$	120,127	$	6,410	$	15,350
	Securities available-for-sale		142,951			142,951		—		142,951		—
	Securities held-to-maturity		40,599			41,147		—		41,147		—
	Loans held for sale		2,396			2,396		—		2,396		—
	Loans and lease receivables, net		1,279,846			1,310,067		—		6,739		1,303,328
	Federal Home Loan Bank and Federal Reserve Bank stock		2,798			2,798		—		—		2,798
	Cash surrender value of life insurance		27,548			27,548		27,548		—		—
	Accrued interest receivable		4,146			4,146		4,146		—		—
	Interest rate swaps		956			956		—		956		—
	Financial liabilities:
	Deposits		$	1,485,801		$	1,489,399	$	939,576	$	549,823	$	—
	Federal Home Loan Bank and other borrowings		34,448			35,080		—		35,080		—
	Junior subordinated notes		10,315			7,086		—		—		7,086
	Interest rate swaps		956			956		—		956		—
	Accrued interest payable		1,744			1,744		1,744		—		—
	Off-balance-sheet items:
	Standby letters of credit		128			128		—		—		128
	Commitments to extend credit		—			*		*		*		*
	*Not meaningful
			December 31, 2014
			Carrying			Fair Value
			Amount
						Total		Level 1		Level 2		Level 3
			(In Thousands)
	Financial assets:
	Cash and cash equivalents		$	103,237		$	103,227	$	85,937	$	6,890	$	10,400
	Securities available-for-sale		144,698			144,698		—		144,698		—
	Securities held-to-maturity		41,563			41,694		—		41,694		—
	Loans held for sale		1,340			1,340		—		1,340		—
	Loans and lease receivables, net		1,265,098			1,285,162		—		7,025		1,278,137
	Federal Home Loan Bank and Federal Reserve Bank stock		2,340			2,340		—		—		2,340
	Cash surrender value of life insurance		27,314			27,314		27,314		—		—
	Accrued interest receivable		3,932			3,932		3,932		—		—
	Interest rate swaps		575			575		—		575		—
	Financial liabilities:
	Deposits		$	1,438,268		$	1,440,248	$	884,292	$	555,956	$	—
	Federal Home Loan Bank and other borrowings		33,994			34,590		—		34,590		—
	Junior subordinated notes		10,315			7,101		—		—		7,101
	Interest rate swaps		575			575		—		575		—
	Accrued interest payable		1,574			1,574		1,574		—		—
	Off-balance-sheet items:
	Standby letters of credit		192			192		—		—		192
	Commitments to extend credit		—			*		*		*		*

Derivative_Financial_Instrumen2

Derivative Financial Instruments (Tables)	3 Months Ended
	Mar. 31, 2015
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 location and fair value of the Corporation’s derivative instruments as of March 31, 2015 and December 31, 2014.
		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
	March 31, 2015	Other assets	$	956	Other liabilities	$	956
	December 31, 2014	Other assets	$	575	Other liabilities	$	575

Regulatory_Capital_Tables

Regulatory Capital (Tables)	3 Months Ended
	Mar. 31, 2015
Regulatory Capital Requirements [Abstract]
Schedule of Compliance with Regulatory Capital Requirements under Banking Regulations	The following table summarizes the Corporation’s and Banks’ capital ratios and the ratios required by their federal regulators at March 31, 2015 and December 31, 2014, respectively:
		Actual				Minimum Required for Capital Adequacy Purposes				Minimum Required to Be Well
										Capitalized Under Prompt Corrective Action Requirements
		Amount		Ratio		Amount		Ratio		Amount		Ratio
		(Dollars in Thousands)
	As of March 31, 2015
	Total capital
	(to risk-weighted assets)
	Consolidated	$	177,594	11.4	%	$	124,677	8	%	N/A		N/A
	First Business Bank	133,667		11.47		93,216		8		$	116,544	10	%
	First Business Bank — Milwaukee	19,215		12.17		12,626		8		15,783		10
	Alterra Bank	26,346		11.05		19,072		8		23,841		10
	Tier 1 capital
	(to risk-weighted assets)
	Consolidated	$	139,974	8.98	%	$	93,508	6	%	N/A		N/A
	First Business Bank	121,166		10.4		69,912		6		$	93,235	8	%
	First Business Bank — Milwaukee	17,721		11.23		9,470		6		12,626		8
	Alterra Bank	25,647		10.76		14,304		6		19,073		8
	Common equity Tier 1 capital
	(to risk-weighted assets)
	Consolidated	$	129,974	8.34	%	$	70,131	4.5	%	N/A		N/A
	First Business Bank	121,166		10.4		52,434		4.5		$	101,318	6.5	%
	First Business Bank — Milwaukee	17,721		11.23		7,102		4.5		75,753		6.5
	Alterra Bank	25,647		10.76		10,728		4.5		10,259		6.5
	Tier 1 capital
	(to average assets)
	Consolidated	$	139,974	8.42	%	$	5,199	4	%	N/A		N/A
	First Business Bank	121,166		10.33		4,847		4		$	6,061	5	%
	First Business Bank — Milwaukee	17,721		7.56		709		4		886		5
	Alterra Bank	25,647		9.68		1,026		4		1,270		5
		Actual				Minimum Required for Capital Adequacy Purposes				Minimum Required to Be Well
										Capitalized Under Prompt Corrective Action Requirements
		Amount		Ratio		Amount		Ratio		Amount		Ratio
		(Dollars in Thousands)
	As of December 31, 2014
	Total capital
	(to risk-weighted assets)
	Consolidated	$	173,263	12.13	%	$	114,253	8	%	N/A		N/A
	First Business Bank	131,411		12.19		86,272		8		$	107,841	10	%
	First Business Bank — Milwaukee	19,128		12.47		12,274		8		15,343		10
	Alterra Bank	22,657		10.9		16,628		8		20,785		10
	Tier 1 capital
	(to risk-weighted assets)
	Consolidated	$	136,008	9.52		$	57,127	4	%	N/A		N/A
	First Business Bank	118,907		11.03		43,136		4		$	64,704	6	%
	First Business Bank — Milwaukee	17,641		11.5		6,137		4		9,206		6
	Alterra Bank	22,320		10.74		8,314		4		12,471		6
	Tier 1 capital
	(to average assets)
	Consolidated	$	136,008	8.71		$	62,490	4	%	N/A		N/A
	First Business Bank	118,907		10.13		46,960		4		$	58,700	5	%
	First Business Bank — Milwaukee	17,641		7.9		8,935		4		11,169		5
	Alterra Bank	22,320		9.01		9,910		4		12,388		5

Earnings_Per_Common_Share_Deta

Earnings Per Common Share (Details) (USD $)	3 Months Ended
In Thousands, except Share data, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Basic earnings per common share
Net income	$4,192	$3,337
Undistributed Earnings (Loss) Allocated to Participating Securities, Basic	73	72
Basic earnings allocated to common shareholders	4,119	3,265
Weighted-average common shares outstanding, excluding participating securities	4,260,249	3,859,503
Basic earnings per common share	$0.97	$0.85
Diluted earnings per common share
Earnings allocated to common shareholders	4,119	3,265
Reallocation of undistributed earnings	0	0
Diluted earnings allocated to common shareholders	$4,119	$3,265
Weighted-average common shares outstanding, excluding participating securities	4,260,249	3,859,503
Dilutive effect of share-based awards	2,265	21,058
Weighted-average diluted common shares outstanding, excluding participating securities	4,262,514	3,880,561
Diluted earnings per common share	$0.97	$0.84

Earnings_Per_Common_Share_Narr

Earnings Per Common Share (Narrative Disclosures) (Details)	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Earnings Per Share [Abstract]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	0	0

ShareBased_Compensation_Stock_

Share-Based Compensation (Stock Option Activity) (Details) (USD $)	3 Months Ended	12 Months Ended
	Mar. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Options
Outstanding, beginning balance	12,000	51,000
Granted	0	0
Exercised	-12,000	-39,000
Expired	0	0
Forfeited	0	0
Outstanding, ending balance	0	12,000	51,000
Exercisable	0	12,000
Weighted Average Exercise Price
Outstanding, beginning	$25	$24.24
Granted	$0	$0
Exercised	$25	$24
Expired	$0	$0
Forfeited	$0	$0
Outstanding, ending	$0	$25	$24.24
Exercisable	$0	$25
Weighted Average Remaining Contractual Life (Years)
Outstanding		1 month 17 days	10 months 17 days
Exercisable		1 month 17 days

ShareBased_Compensation_Restri

Share-Based Compensation (Restricted Share Activity) (Details) (USD $)	3 Months Ended	12 Months Ended
	Mar. 31, 2015	Dec. 31, 2014
Number of Restricted Shares
Nonvested balance, beginning	77,499	84,709
Granted	500	32,261
Vested	-373	-39,471
Forfeited	-3,394	0
Nonvested balance, ending	74,232	77,499
Weighted Average Grant-Date Fair Value
Nonvested balance, beginning	$33.94	$23.10
Granted	$46.60	$44.98
Vested	$40.29	$19.71
Forfeited	$26.44	$0
Nonvested balance, ending	$34.33	$33.94

ShareBased_Compensation_ShareB

Share-Based Compensation (Share-Based Payment Plan Expense) (Details) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Share-based compensation	$234	$193

ShareBased_Compensation_Narrat

Share-Based Compensation (Narrative Disclosures) (Details) (USD $)	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Number of shares available for grant	177,663
Stock options graded vesting minimum period	4 years
Stock options graded vesting maximum period	8 years
Stock options contractual term	10 years
Stock-based compensation related to stock options recognized in the consolidated financial statements	$0	$0
Deferred compensation expense yet to be recognized	$2,000,000
Period of time that deferred compensation expense will be recognized	3 years

Securities_AvailableforSale_Se

Securities (Available-for-Sale Securities) (Details) (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Thousands, unless otherwise specified
Schedule of Available-for-sale Securities
Amortized cost	$141,124	$143,636
Estimated fair value	142,951	144,698
Available-for-sale Debt Securities, Accumulated Gross Unrealized Gain, before Tax	2,007	1,629
Available-for-sale Debt Securities, Accumulated Gross Unrealized Loss, before Tax	180	567
U.S. Government agency obligations - government-sponsored enterprises
Schedule of Available-for-sale Securities
Amortized cost	8,046	9,046
Estimated fair value	8,047	8,965
Available-for-sale Debt Securities, Accumulated Gross Unrealized Gain, before Tax	29	0
Available-for-sale Debt Securities, Accumulated Gross Unrealized Loss, before Tax	28	81
Municipal obligations
Schedule of Available-for-sale Securities
Amortized cost	569	573
Estimated fair value	578	578
Available-for-sale Debt Securities, Accumulated Gross Unrealized Gain, before Tax	9	5
Available-for-sale Debt Securities, Accumulated Gross Unrealized Loss, before Tax	0	0
Asset-backed securities
Schedule of Available-for-sale Securities
Amortized cost	1,494	1,514
Estimated fair value	1,494	1,510
Available-for-sale Debt Securities, Accumulated Gross Unrealized Gain, before Tax	0	0
Available-for-sale Debt Securities, Accumulated Gross Unrealized Loss, before Tax	0	4
Collateralized mortgage obligations - government issued
Schedule of Available-for-sale Securities
Amortized cost	61,418	67,740
Estimated fair value	62,669	68,874
Available-for-sale Debt Securities, Accumulated Gross Unrealized Gain, before Tax	1,338	1,390
Available-for-sale Debt Securities, Accumulated Gross Unrealized Loss, before Tax	87	256
Collateralized mortgage obligations - government-sponsored enterprises
Schedule of Available-for-sale Securities
Amortized cost	69,597	64,763
Estimated fair value	70,163	64,771
Available-for-sale Debt Securities, Accumulated Gross Unrealized Gain, before Tax	631	234
Available-for-sale Debt Securities, Accumulated Gross Unrealized Loss, before Tax	$65	$226

Securities_HeldtoMaturity_Secu

Securities (Held-to-Maturity Securities) (Details) (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Thousands, unless otherwise specified
Schedule of Held-to-maturity Securities
Amortized cost	$40,599	$41,563
Estimated Fair Value	41,147	41,694
Held-to-maturity Securities, Accumulated Unrecognized Holding Loss	-8	-85
Held-to-maturity Securities, Accumulated Unrecognized Holding Gain	556	216
U.S. Government agency obligations - government-sponsored enterprises
Schedule of Held-to-maturity Securities
Amortized cost	1,491	1,490
Estimated Fair Value	1,496	1,473
Held-to-maturity Securities, Accumulated Unrecognized Holding Loss	-1	-17
Held-to-maturity Securities, Accumulated Unrecognized Holding Gain	6	0
Municipal obligations
Schedule of Held-to-maturity Securities
Amortized cost	16,075	16,088
Estimated Fair Value	16,299	16,155
Held-to-maturity Securities, Accumulated Unrecognized Holding Loss	-7	-18
Held-to-maturity Securities, Accumulated Unrecognized Holding Gain	231	85
Collateralized mortgage obligations - government issued
Schedule of Held-to-maturity Securities
Amortized cost	13,889	14,505
Estimated Fair Value	14,074	14,531
Held-to-maturity Securities, Accumulated Unrecognized Holding Loss	0	-31
Held-to-maturity Securities, Accumulated Unrecognized Holding Gain	185	57
Collateralized mortgage obligations - government-sponsored enterprises
Schedule of Held-to-maturity Securities
Amortized cost	9,144	9,480
Estimated Fair Value	9,278	9,535
Held-to-maturity Securities, Accumulated Unrecognized Holding Loss	0	-19
Held-to-maturity Securities, Accumulated Unrecognized Holding Gain	$134	$74

Securities_Contractual_Maturit

Securities (Contractual Maturity) (Details) (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Thousands, unless otherwise specified
Available-for-Sale, Amortized Cost
Due in one year or less	$0
Due in one year through five years	9,341
Due in five through ten years	75,842
Due in over ten years	55,941
Amortized cost	141,124	143,636
Available-for-Sale, Estimated Fair Value
Due in one year or less	0
Due in one year through five years	9,375
Due in five through ten years	76,931
Due in over ten years	56,645
Estimated fair value	142,951	144,698
Held-to-Maturity, Amortized Cost
Due in one year or less	0
Due in one year through five years	3,261
Due in five through ten years	13,330
Due in over ten years	24,008
Amortized cost	40,599	41,563
Held-to-Maturity, Estimated Fair Value
Due in one year or less	0
Due in one year through five years	3,272
Due in five through ten years	13,532
Due in over ten years	24,343
Estimated Fair Value	$41,147	$41,694

Securities_Unrealized_Losses_A

Securities (Unrealized Losses Available for Sale) (Details) (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Thousands, unless otherwise specified
Fair value
Less than 12 months	$4,853	$42,185
12 months or longer	18,744	21,518
Total	23,597	63,703
Unrealized losses
Less than 12 months	5	159
12 months or longer	175	408
Total	180	567
U.S. Government agency obligations - government-sponsored enterprises
Fair value
Less than 12 months	0	3,486
12 months or longer	3,722	5,479
Total	3,722	8,965
Unrealized losses
Less than 12 months	0	12
12 months or longer	28	69
Total	28	81
Asset-backed securities
Fair value
Less than 12 months	0	0
12 months or longer	1,494	1,510
Total	1,494	1,510
Unrealized losses
Less than 12 months	0	0
12 months or longer	0	4
Total	0	4
Collateralized mortgage obligations - government issued
Fair value
Less than 12 months	0	9,201
12 months or longer	8,669	9,536
Total	8,669	18,737
Unrealized losses
Less than 12 months	0	50
12 months or longer	87	206
Total	87	256
Collateralized mortgage obligations - government-sponsored enterprises
Fair value
Less than 12 months	4,853	29,498
12 months or longer	4,859	4,993
Total	9,712	34,491
Unrealized losses
Less than 12 months	5	97
12 months or longer	60	129
Total	$65	$226

Securities_Unrealized_Losses_H

Securities (Unrealized Losses Held-to-Maturity) (Details) (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Thousands, unless otherwise specified
Fair Value
Less than 12 months	$2,253	$10,035
12 months or longer	0	0
Total	2,253	10,035
Unrealized Losses
Less than 12 months	8	85
12 months or longer	0	0
Total	8	85
U.S. Government agency obligations - government-sponsored enterprises
Fair Value
Less than 12 months	997	1,490
12 months or longer	0	0
Total	997	1,490
Unrealized Losses
Less than 12 months	1	17
12 months or longer	0	0
Total	1	17
Municipal obligations
Fair Value
Less than 12 months	1,256	2,222
12 months or longer	0	0
Total	1,256	2,222
Unrealized Losses
Less than 12 months	7	18
12 months or longer	0	0
Total	7	18
Collateralized mortgage obligations - government issued
Fair Value
Less than 12 months		3,247
12 months or longer		0
Total		3,247
Unrealized Losses
Less than 12 months		31
12 months or longer		0
Total		31
Collateralized mortgage obligations - government-sponsored enterprises
Fair Value
Less than 12 months		3,076
12 months or longer		0
Total		3,076
Unrealized Losses
Less than 12 months		19
12 months or longer		0
Total		$19

Securities_Narrative_Disclosur

Securities (Narrative Disclosures) (Details) (USD $)	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014
	securities		securities
Investments, Debt and Equity Securities [Abstract]
Proceeds from sale of available-for-sale securities	$0	$0
Available-for-sale securities pledged as collateral	30,700,000		32,700,000
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions	23		59
Held-to-maturity, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions	8		57
Available-for-sale securities in an unrealized loss position, twelve months or greater	19
Other than temporary impairment, Available-for-sale securities	0
Held-to-Maturity Securities in an unrealized loss position, twelve months or greater	0
Other than temporary impairment, Held-to-maturity securities	$0

Loan_and_Lease_Receivables_Imp3

Loan and Lease Receivables, Impaired Loans and Leases and Allowance for Loan and Lease Losses (Loan Composition) (Details) (USD $)	Mar. 31, 2015	Dec. 31, 2014	Mar. 31, 2014
In Thousands, unless otherwise specified
Receivables [Abstract]
Commercial real estate — owner occupied	$163,982	$163,884
Commercial real estate — non-owner occupied	404,931	417,962
Construction and land development	121,211	121,160
Multi-family	84,163	72,578
1-4 family (1)	40,159	36,182
Total commercial real estate	814,446	811,766
Commercial and industrial (2)	426,413	416,654
Direct financing leases, net	31,644	34,165
Home equity and second mortgages	9,032	7,866
Other	16,532	11,341
Total consumer and other	25,564	19,207
Total gross loans and leases receivable	1,298,067	1,281,792	986,221
Allowance for loan and lease losses	14,694	14,329
Deferred loan fees	1,131	1,025
Loans and leases receivable, net	$1,282,242	$1,266,438

Loan_and_Lease_Receivables_Imp4

Loan and Lease Receivables, Impaired Loans and Leases and Allowance for Loan and Lease Losses (Fair Value of Credit Impaired Loans Acquired) (Details) (Purchased Credit Impaired Loans [Member], USD $)	Mar. 31, 2015	Dec. 31, 2014
In Thousands, unless otherwise specified
Purchased Credit Impaired Loans [Member]
Schedule of Contractually Required Payments Receivable, Expected Cash Flows, and Fair Value of Credit Impaired Loans Acquired [Line Items]
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Acquired During Period, Contractually Required Payments Receivable at Acquisition	$6,783	$6,874
Non-Accretable Difference On Credit Impaired Loans Acquired in Business Acquisitions	-2,252	-2,173
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Acquired During Period, Cash Flows Expected to be Collected at Acquisition	4,531	4,701
Accretable Yield On Credit Impaired Loans Acquired in Business Acquisitions	-566	-676
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Acquired During Period, at Acquisition, at Fair Value	$3,965	$4,025

Loan_and_Lease_Receivables_Imp5

Loan and Lease Receivables, Impaired Loans and Leases and Allowance for Loan and Lease Losses (Accretable Yield) (Details) (USD $)	3 Months Ended	12 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014	Nov. 01, 2014
Receivables [Abstract]
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield	$566	$676	$683
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield, Accretion	-4	-7
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield, Additions	($106)	$0

Loan_and_Lease_Receivables_Imp6

Loan and Lease Receivables, Impaired Loans and Leases and Allowance for Loan and Lease Losses (Loans by Credit Quality Indicator) (Details) (USD $)	Mar. 31, 2015	Dec. 31, 2014	Mar. 31, 2014
In Thousands, unless otherwise specified
Financing Receivable, Recorded Investment
Commercial real estate — owner occupied	$163,982	$163,884
Commercial real estate — non-owner occupied	404,931	417,962
Construction and land development	121,211	121,160
Multi-family	84,163	72,578
1-4 family (1)	40,159	36,182
Total commercial real estate	814,446	811,766
Commercial and industrial (2)	426,413	416,654
Direct financing leases, net	31,644	34,165
Home equity and second mortgages	9,032	7,866
Other	16,532	11,341
Total consumer and other	25,564	19,207
Total gross loans and leases receivable	1,298,067	1,281,792	986,221
Category as a % of total portfolio	100.00%	100.00%
Category I
Financing Receivable, Recorded Investment
Commercial real estate — owner occupied	128,449	131,094
Commercial real estate — non-owner occupied	368,016	378,671
Construction and land development	100,815	100,934
Multi-family	82,500	70,897
1-4 family (1)	30,322	25,997
Total commercial real estate	710,102	707,593
Commercial and industrial (2)	380,318	383,755
Direct financing leases, net	29,926	32,756
Home equity and second mortgages	8,245	7,039
Other	15,830	10,570
Total consumer and other	24,075	17,609
Total gross loans and leases receivable	1,144,421	1,141,713
Category as a % of total portfolio	88.17%	89.07%
Category II
Financing Receivable, Recorded Investment
Commercial real estate — owner occupied	18,511	15,592
Commercial real estate — non-owner occupied	25,027	20,823
Construction and land development	8,519	8,193
Multi-family	746	751
1-4 family (1)	4,746	5,278
Total commercial real estate	57,549	50,637
Commercial and industrial (2)	22,493	18,524
Direct financing leases, net	1,469	1,120
Home equity and second mortgages	201	205
Other	0	50
Total consumer and other	201	255
Total gross loans and leases receivable	81,712	70,536
Category as a % of total portfolio	6.29%	5.50%
Category III
Financing Receivable, Recorded Investment
Commercial real estate — owner occupied	16,454	16,621
Commercial real estate — non-owner occupied	10,921	17,498
Construction and land development	6,810	6,876
Multi-family	903	913
1-4 family (1)	3,313	3,336
Total commercial real estate	38,401	45,244
Commercial and industrial (2)	21,797	12,026
Direct financing leases, net	249	289
Home equity and second mortgages	163	189
Other	0	0
Total consumer and other	163	189
Total gross loans and leases receivable	60,610	57,748
Category as a % of total portfolio	4.67%	4.51%
Category IV
Financing Receivable, Recorded Investment
Commercial real estate — owner occupied	568	577
Commercial real estate — non-owner occupied	967	970
Construction and land development	5,067	5,157
Multi-family	14	17
1-4 family (1)	1,778	1,571
Total commercial real estate	8,394	8,292
Commercial and industrial (2)	1,805	2,349
Direct financing leases, net	0	0
Home equity and second mortgages	423	433
Other	702	721
Total consumer and other	1,125	1,154
Total gross loans and leases receivable	$11,324	$11,795
Category as a % of total portfolio	0.87%	0.92%

Loan_and_Lease_Receivables_Imp7

Loan and Lease Receivables, Impaired Loans and Leases and Allowance for Loan and Lease Losses (Past Due Loans) (Details) (USD $)	Mar. 31, 2015	Dec. 31, 2014	Mar. 31, 2014
In Thousands, unless otherwise specified
Financing Receivable, Recorded Investment, Aging [Abstract]
30-59 days past due	$239	$364
60-89 days past due	157	660
Greater than 90 days past due	3,053	1,762
Total past due	3,449	2,786
Current	1,294,618	1,279,006
Non-accrual loans and leases	9,352	9,792
Total gross loans and leases receivable	1,298,067	1,281,792	986,221
30 to 59 days past due, percent of total portfolio	0.02%	0.03%
60 to 89 days past due, percent of total portfolio	0.01%	0.05%
Greater than 90 days past due, percent of portfolio	0.24%	0.14%
Past due, percent of total portfolio	0.27%	0.22%
Current, percent of total portfolio	99.73%	99.78%
Gross loans, percent of total portfolio	100.00%	100.00%
Commercial real estate — owner occupied
Financing Receivable, Recorded Investment, Aging [Abstract]
30-59 days past due	0	0
60-89 days past due	0	0
Greater than 90 days past due	0	0
Total past due	0	0
Current	163,982	163,884
Non-accrual loans and leases	493	500
Total gross loans and leases receivable	163,982	163,884
Commercial real estate — non-owner occupied
Financing Receivable, Recorded Investment, Aging [Abstract]
30-59 days past due	0	0
60-89 days past due	24	215
Greater than 90 days past due	214	0
Total past due	238	215
Current	404,693	417,747
Non-accrual loans and leases	286	286
Total gross loans and leases receivable	404,931	417,962
Construction and land development
Financing Receivable, Recorded Investment, Aging [Abstract]
30-59 days past due	0	0
60-89 days past due	0	193
Greater than 90 days past due	193	0
Total past due	193	193
Current	121,018	120,967
Non-accrual loans and leases	4,849	4,932
Total gross loans and leases receivable	121,211	121,160
Multi-family
Financing Receivable, Recorded Investment, Aging [Abstract]
30-59 days past due	0	0
60-89 days past due	0	0
Greater than 90 days past due	0	0
Total past due	0	0
Current	84,163	72,578
Non-accrual loans and leases	14	17
Total gross loans and leases receivable	84,163	72,578
1-4 family
Financing Receivable, Recorded Investment, Aging [Abstract]
30-59 days past due	238	0
60-89 days past due	0	106
Greater than 90 days past due	296	306
Total past due	534	412
Current	39,625	35,770
Non-accrual loans and leases	910	690
Total gross loans and leases receivable	40,159	36,182
Commercial and industrial
Financing Receivable, Recorded Investment, Aging [Abstract]
30-59 days past due	1	364
60-89 days past due	81	146
Greater than 90 days past due	1,647	736
Total past due	1,729	1,246
Current	424,684	415,408
Non-accrual loans and leases	1,774	2,318
Total gross loans and leases receivable	426,413	416,654	303,630
Direct financing leases, net
Financing Receivable, Recorded Investment, Aging [Abstract]
30-59 days past due	0	0
60-89 days past due	0	0
Greater than 90 days past due	0	0
Total past due	0	0
Current	31,644	34,165
Non-accrual loans and leases	0	0
Total gross loans and leases receivable	31,644	34,165	26,364
Home equity and second mortgages
Financing Receivable, Recorded Investment, Aging [Abstract]
30-59 days past due	0	0
60-89 days past due	52	0
Greater than 90 days past due	0	0
Total past due	52	0
Current	8,980	7,866
Non-accrual loans and leases	323	329
Total gross loans and leases receivable	9,032	7,866
Other
Financing Receivable, Recorded Investment, Aging [Abstract]
30-59 days past due	0	0
60-89 days past due	0	0
Greater than 90 days past due	703	720
Total past due	703	720
Current	15,829	10,621
Non-accrual loans and leases	703	720
Total gross loans and leases receivable	16,532	11,341
Accruing loans and leases
Financing Receivable, Recorded Investment, Aging [Abstract]
30-59 days past due	0	0
60-89 days past due	0	0
Greater than 90 days past due	0	0
Total past due	0	0
Current	1,288,715	1,272,000
Accrual loans and leases	1,288,715	1,272,000
Accruing loans and leases | Commercial real estate — owner occupied
Financing Receivable, Recorded Investment, Aging [Abstract]
30-59 days past due	0	0
60-89 days past due	0	0
Greater than 90 days past due	0	0
Total past due	0	0
Current	163,489	163,384
Accrual loans and leases	163,489	163,384
Accruing loans and leases | Commercial real estate — non-owner occupied
Financing Receivable, Recorded Investment, Aging [Abstract]
30-59 days past due	0	0
60-89 days past due	0	0
Greater than 90 days past due	0	0
Total past due	0	0
Current	404,645	417,676
Accrual loans and leases	404,645	417,676
Accruing loans and leases | Construction and land development
Financing Receivable, Recorded Investment, Aging [Abstract]
30-59 days past due	0	0
60-89 days past due	0	0
Greater than 90 days past due	0	0
Total past due	0	0
Current	116,362	116,228
Accrual loans and leases	116,362	116,228
Accruing loans and leases | Multi-family
Financing Receivable, Recorded Investment, Aging [Abstract]
30-59 days past due	0	0
60-89 days past due	0	0
Greater than 90 days past due	0	0
Total past due	0	0
Current	84,149	72,561
Accrual loans and leases	84,149	72,561
Accruing loans and leases | 1-4 family
Financing Receivable, Recorded Investment, Aging [Abstract]
30-59 days past due	0	0
60-89 days past due	0	0
Greater than 90 days past due	0	0
Total past due	0	0
Current	39,249	35,492
Accrual loans and leases	39,249	35,492
Accruing loans and leases | Commercial and industrial
Financing Receivable, Recorded Investment, Aging [Abstract]
30-59 days past due	0	0
60-89 days past due	0	0
Greater than 90 days past due	0	0
Total past due	0	0
Current	424,639	414,336
Accrual loans and leases	424,639	414,336
Accruing loans and leases | Direct financing leases, net
Financing Receivable, Recorded Investment, Aging [Abstract]
30-59 days past due	0	0
60-89 days past due	0	0
Greater than 90 days past due	0	0
Total past due	0	0
Current	31,644	34,165
Accrual loans and leases	31,644	34,165
Accruing loans and leases | Home equity and second mortgages
Financing Receivable, Recorded Investment, Aging [Abstract]
30-59 days past due	0	0
60-89 days past due	0	0
Greater than 90 days past due	0	0
Total past due	0	0
Current	8,709	7,537
Accrual loans and leases	8,709	7,537
Accruing loans and leases | Other
Financing Receivable, Recorded Investment, Aging [Abstract]
30-59 days past due	0	0
60-89 days past due	0	0
Greater than 90 days past due	0	0
Total past due	0	0
Current	15,829	10,621
Accrual loans and leases	15,829	10,621
Non-accruing loans and leases
Financing Receivable, Recorded Investment, Aging [Abstract]
30-59 days past due	239	364
60-89 days past due	157	660
Greater than 90 days past due	3,053	1,762
Total past due	3,449	2,786
Current	5,903	7,006
Non-accrual loans and leases	9,352	9,792
Non-accruing loans and leases | Commercial real estate — owner occupied
Financing Receivable, Recorded Investment, Aging [Abstract]
30-59 days past due	0	0
60-89 days past due	0	0
Greater than 90 days past due	0	0
Total past due	0	0
Current	493	500
Non-accrual loans and leases	493	500
Non-accruing loans and leases | Commercial real estate — non-owner occupied
Financing Receivable, Recorded Investment, Aging [Abstract]
30-59 days past due	0	0
60-89 days past due	24	215
Greater than 90 days past due	214	0
Total past due	238	215
Current	48	71
Non-accrual loans and leases	286	286
Non-accruing loans and leases | Construction and land development
Financing Receivable, Recorded Investment, Aging [Abstract]
30-59 days past due	0	0
60-89 days past due	0	193
Greater than 90 days past due	193	0
Total past due	193	193
Current	4,656	4,739
Non-accrual loans and leases	4,849	4,932
Non-accruing loans and leases | Multi-family
Financing Receivable, Recorded Investment, Aging [Abstract]
30-59 days past due	0	0
60-89 days past due	0	0
Greater than 90 days past due	0	0
Total past due	0	0
Current	14	17
Non-accrual loans and leases	14	17
Non-accruing loans and leases | 1-4 family
Financing Receivable, Recorded Investment, Aging [Abstract]
30-59 days past due	238	0
60-89 days past due	0	106
Greater than 90 days past due	296	306
Total past due	534	412
Current	376	278
Non-accrual loans and leases	910	690
Non-accruing loans and leases | Commercial and industrial
Financing Receivable, Recorded Investment, Aging [Abstract]
30-59 days past due	1	364
60-89 days past due	81	146
Greater than 90 days past due	1,647	736
Total past due	1,729	1,246
Current	45	1,072
Non-accrual loans and leases	1,774	2,318
Non-accruing loans and leases | Direct financing leases, net
Financing Receivable, Recorded Investment, Aging [Abstract]
30-59 days past due	0	0
60-89 days past due	0	0
Greater than 90 days past due	0	0
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]
30-59 days past due	0	0
60-89 days past due	52	0
Greater than 90 days past due	0	0
Total past due	52	0
Current	271	329
Non-accrual loans and leases	323	329
Non-accruing loans and leases | Other
Financing Receivable, Recorded Investment, Aging [Abstract]
30-59 days past due	0	0
60-89 days past due	0	0
Greater than 90 days past due	703	720
Total past due	703	720
Current	0	0
Non-accrual loans and leases	$703	$720

Loan_and_Lease_Receivables_Imp8

Loan and Lease Receivables, Impaired Loans and Leases and Allowance for Loan and Lease Losses (Non-accrual Loans) (Details) (USD $)	Mar. 31, 2015	Dec. 31, 2014	Mar. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Financing Receivable, Impaired
Non-accrual loans and leases	$9,352	$9,792
Foreclosed properties, net	1,566	1,693		333
Total non-performing assets	10,918	11,485
Performing troubled debt restructurings	1,972	2,003
Total impaired assets	12,890	13,488
Total non-accrual loans and leases to gross loans and leases	0.72%	0.76%
Total non-performing assets to total gross loans and leases plus foreclosed properties, net	0.84%	0.89%
Total non-performing assets to total assets	0.65%	0.70%
Allowance for loan and lease losses to gross loans and leases	1.13%	1.12%	1.43%
Allowance for loan and lease losses to non-accrual loans and leases	157.12%	146.33%
Commercial real estate — owner occupied
Financing Receivable, Impaired
Non-accrual loans and leases	493	500
Commercial real estate — non-owner occupied
Financing Receivable, Impaired
Non-accrual loans and leases	286	286
Construction and land development
Financing Receivable, Impaired
Non-accrual loans and leases	4,849	4,932
Multi-family
Financing Receivable, Impaired
Non-accrual loans and leases	14	17
1-4 family
Financing Receivable, Impaired
Non-accrual loans and leases	910	690
Total non-accrual commercial real estate
Financing Receivable, Impaired
Non-accrual loans and leases	6,552	6,425
Allowance for loan and lease losses to gross loans and leases	1.07%		1.40%
Commercial and industrial
Financing Receivable, Impaired
Non-accrual loans and leases	1,774	2,318
Allowance for loan and lease losses to gross loans and leases	1.24%		1.49%
Direct financing leases, net
Financing Receivable, Impaired
Non-accrual loans and leases	0	0
Allowance for loan and lease losses to gross loans and leases	1.25%		1.27%
Home equity and second mortgages
Financing Receivable, Impaired
Non-accrual loans and leases	323	329
Other
Financing Receivable, Impaired
Non-accrual loans and leases	703	720
Total non-accrual consumer and other loans
Financing Receivable, Impaired
Non-accrual loans and leases	$1,026	$1,049
Allowance for loan and lease losses to gross loans and leases	1.13%		1.57%

Loan_and_Lease_Receivables_Imp9

Loan and Lease Receivables, Impaired Loans and Leases and Allowance for Loan and Lease Losses (Troubled Debt Restructurings) (Details) (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Thousands, unless otherwise specified	loans	loans
Troubled debt restructurings
Number of Loans	40	40
Pre-Modification Recorded Investment	$13,495	$13,495
Post-Modification Recorded Investment	9,307	9,396
Commercial real estate — owner occupied
Troubled debt restructurings
Number of Loans	2	2
Pre-Modification Recorded Investment	624	624
Post-Modification Recorded Investment	568	577
Commercial real estate — non-owner occupied
Troubled debt restructurings
Number of Loans	5	5
Pre-Modification Recorded Investment	1,095	1,095
Post-Modification Recorded Investment	905	970
Construction and land development
Troubled debt restructurings
Number of Loans	4	4
Pre-Modification Recorded Investment	6,260	6,260
Post-Modification Recorded Investment	5,051	5,157
Multi-family
Troubled debt restructurings
Number of Loans	1	1
Pre-Modification Recorded Investment	184	184
Post-Modification Recorded Investment	14	17
1-4 family
Troubled debt restructurings
Number of Loans	16	16
Pre-Modification Recorded Investment	2,119	2,119
Post-Modification Recorded Investment	1,518	1,368
Commercial and industrial
Troubled debt restructurings
Number of Loans	4	4
Pre-Modification Recorded Investment	361	361
Post-Modification Recorded Investment	151	155
Direct financing leases, net
Troubled debt restructurings
Number of Loans	0	0
Pre-Modification Recorded Investment	0	0
Post-Modification Recorded Investment	0	0
Home equity and second mortgages
Troubled debt restructurings
Number of Loans	6	6
Pre-Modification Recorded Investment	772	772
Post-Modification Recorded Investment	398	431
Other
Troubled debt restructurings
Number of Loans	2	2
Pre-Modification Recorded Investment	2,080	2,080
Post-Modification Recorded Investment	$702	$721

Recovered_Sheet1

Loan and Lease Receivables, Impaired Loans and Leases and Allowance for Loan and Lease Losses (Troubled Debt Restructurings by Modification Type) (Details) (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Thousands, unless otherwise specified	loans	loans
Troubled debt restructurings
Number of Loans	40	40
Recorded Investment	$9,307	$9,396
Commercial real estate | Extension of term
Troubled debt restructurings
Number of Loans	1	1
Recorded Investment	35	39
Commercial real estate | Interest Rate Concession
Troubled debt restructurings
Number of Loans	1	1
Recorded Investment	56	65
Commercial real estate | Combination of extension and interest rate concession
Troubled debt restructurings
Number of Loans	26	26
Recorded Investment	7,965	7,984
Commercial and industrial
Troubled debt restructurings
Number of Loans	4	4
Recorded Investment	151	155
Commercial and industrial | Combination of extension and interest rate concession
Troubled debt restructurings
Number of Loans	4	4
Recorded Investment	151	155
Consumer and other | Extension of term
Troubled debt restructurings
Number of Loans	3	3
Recorded Investment	735	753
Consumer and other | Combination of extension and interest rate concession
Troubled debt restructurings
Number of Loans	5	5
Recorded Investment	$365	$400

Recovered_Sheet2

Loan and Lease Receivables, Impaired Loans and Leases and Allowance for Loan and Lease Losses (Impaired Loans and Leases) (Details) (USD $)	3 Months Ended		12 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015		Dec. 31, 2014
Recorded investment
With no impairment reserve recorded	$10,475		$11,270
With impairment reserve recorded	849		525
Total	11,324		11,795
Unpaid principal balance
With no impairment reserve recorded	15,112		15,623
With impairment reserve recorded	889		565
Total	16,001		16,188
Impairment reserve
Impairment reserve	391		290
Average recorded investment(1)
With no impairment reserve recorded	11,442	[1]	13,926	[1]
With impairment reserve recorded	519	[1]	548	[1]
Total	11,961	[1]	14,474	[1]
Foregone interest income
With no impairment reserve recorded	167		843
With impairment reserve recorded	12		27
Foregone interest income	179		870
Interest income recognized
With no impairment reserve recorded	1		740
With impairment reserve recorded	0		0
Total	1		740
Net foregone interest income
With no impairment reserve recorded	166		103
With impairment reserve recorded	12		27
Total	178		130
Commercial real estate — owner occupied
Recorded investment
With no impairment reserve recorded	568		577
With impairment reserve recorded	0		0
Total	568		577
Unpaid principal balance
With no impairment reserve recorded	568		577
With impairment reserve recorded	0		0
Total	568		577
Impairment reserve
Impairment reserve	0		0
Average recorded investment(1)
With no impairment reserve recorded	573	[1]	484	[1]
With impairment reserve recorded	0	[1]	0	[1]
Total	573	[1]	484	[1]
Foregone interest income
With no impairment reserve recorded	6		30
With impairment reserve recorded	0		0
Foregone interest income	6		30
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	6		-49
With impairment reserve recorded	0		0
Total	6		-49
Commercial real estate — non-owner occupied
Recorded investment
With no impairment reserve recorded	919		921
With impairment reserve recorded	48		49
Total	967		970
Unpaid principal balance
With no impairment reserve recorded	919		921
With impairment reserve recorded	88		89
Total	1,007		1,010
Impairment reserve
Impairment reserve	48		49
Average recorded investment(1)
With no impairment reserve recorded	921	[1]	349	[1]
With impairment reserve recorded	48	[1]	52	[1]
Total	969	[1]	401	[1]
Foregone interest income
With no impairment reserve recorded	3		22
With impairment reserve recorded	1		4
Foregone interest income	4		26
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	3		22
With impairment reserve recorded	1		4
Total	4		26
Construction and land development
Recorded investment
With no impairment reserve recorded	5,068		5,157
With impairment reserve recorded	0		0
Total	5,068		5,157
Unpaid principal balance
With no impairment reserve recorded	7,738		7,828
With impairment reserve recorded	0		0
Total	7,738		7,828
Impairment reserve
Impairment reserve	0		0
Average recorded investment(1)
With no impairment reserve recorded	5,135	[1]	5,285	[1]
With impairment reserve recorded	0	[1]	0	[1]
Total	5,135	[1]	5,285	[1]
Foregone interest income
With no impairment reserve recorded	37		155
With impairment reserve recorded	0		0
Foregone interest income	37		155
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	37		155
With impairment reserve recorded	0		0
Total	37		155
Multi-family
Recorded investment
With no impairment reserve recorded	14		17
With impairment reserve recorded	0		0
Total	14		17
Unpaid principal balance
With no impairment reserve recorded	380		384
With impairment reserve recorded	0		0
Total	380		384
Impairment reserve
Impairment reserve	0		0
Average recorded investment(1)
With no impairment reserve recorded	15	[1]	24	[1]
With impairment reserve recorded	0	[1]	0	[1]
Total	15	[1]	24	[1]
Foregone interest income
With no impairment reserve recorded	13		53
With impairment reserve recorded	0		0
Foregone interest income	13		53
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	13		53
With impairment reserve recorded	0		0
Total	13		53
1-4 family
Recorded investment
With no impairment reserve recorded	1,351		1,181
With impairment reserve recorded	427		390
Total	1,778		1,571
Unpaid principal balance
With no impairment reserve recorded	1,361		1,218
With impairment reserve recorded	427		390
Total	1,788		1,608
Impairment reserve
Impairment reserve	159		155
Average recorded investment(1)
With no impairment reserve recorded	1,459	[1]	380	[1]
With impairment reserve recorded	386	[1]	405	[1]
Total	1,845	[1]	785	[1]
Foregone interest income
With no impairment reserve recorded	10		15
With impairment reserve recorded	5		18
Foregone interest income	15		33
Interest income recognized
With no impairment reserve recorded	0		12
With impairment reserve recorded	0		0
Total	0		12
Net foregone interest income
With no impairment reserve recorded	10		3
With impairment reserve recorded	5		18
Total	15		21
Commercial and industrial
Recorded investment
With no impairment reserve recorded	1,482		2,316
With impairment reserve recorded	322		33
Total	1,804		2,349
Unpaid principal balance
With no impairment reserve recorded	2,406		2,926
With impairment reserve recorded	322		33
Total	2,728		2,959
Impairment reserve
Impairment reserve	132		33
Average recorded investment(1)
With no impairment reserve recorded	2,252	[1]	6,141	[1]
With impairment reserve recorded	33	[1]	34	[1]
Total	2,285	[1]	6,175	[1]
Foregone interest income
With no impairment reserve recorded	74		463
With impairment reserve recorded	5		0
Foregone interest income	79		463
Interest income recognized
With no impairment reserve recorded	1		649
With impairment reserve recorded	0		0
Total	1		649
Net foregone interest income
With no impairment reserve recorded	73		-186
With impairment reserve recorded	5		0
Total	78		-186
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	0	[1]	0	[1]
With impairment reserve recorded	0	[1]	0	[1]
Total	0	[1]	0	[1]
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	371		380
With impairment reserve recorded	52		53
Total	423		433
Unpaid principal balance
With no impairment reserve recorded	371		380
With impairment reserve recorded	52		53
Total	423		433
Impairment reserve
Impairment reserve	52		53
Average recorded investment(1)
With no impairment reserve recorded	375	[1]	495	[1]
With impairment reserve recorded	52	[1]	57	[1]
Total	427	[1]	552	[1]
Foregone interest income
With no impairment reserve recorded	4		18
With impairment reserve recorded	1		5
Foregone interest income	5		23
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	4		18
With impairment reserve recorded	1		5
Total	5		23
Other
Recorded investment
With no impairment reserve recorded	702		721
With impairment reserve recorded	0		0
Total	702		721
Unpaid principal balance
With no impairment reserve recorded	1,369		1,389
With impairment reserve recorded	0		0
Total	1,369		1,389
Impairment reserve
Impairment reserve	0		0
Average recorded investment(1)
With no impairment reserve recorded	712	[1]	768	[1]
With impairment reserve recorded	0	[1]	0	[1]
Total	712	[1]	768	[1]
Foregone interest income
With no impairment reserve recorded	20		87
With impairment reserve recorded	0		0
Foregone interest income	20		87
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	20		87
With impairment reserve recorded	0		0
Total	$20		$87
[1]	(1)Average recorded investment is calculated primarily using daily average balances.

Recovered_Sheet3

Loan and Lease Receivables, Impaired Loans and Leases and Allowance for Loan and Lease Losses (Allowance for Loan and Lease Losses) (Details) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014
Allowance for credit losses:
Beginning balance	$14,329	$13,901
Charge-offs	-324	0
Recoveries	5	20
Provision	684	180
Ending balance	14,694	14,101
Ending balance: individually evaluated for impairment	292	507
Ending balance: collectively evaluated for impairment	14,303	13,594
Ending balance: loans acquired with deteriorated credit quality	99	0
Loans and lease receivables:
Total gross loans and leases receivable	1,298,067	986,221	1,281,792
Ending balance: individually evaluated for impairment	7,297	13,292
Ending balance: collectively evaluated for impairment	1,286,743	971,525
Ending balance: loans acquired with deteriorated credit quality	4,027	1,404
Allowance as % of gross loans	1.13%	1.43%	1.12%
Commercial real estate
Allowance for credit losses:
Beginning balance	8,619	9,055
Charge-offs	-11	0
Recoveries	2	15
Provision	99	-98
Ending balance	8,709	8,972
Ending balance: individually evaluated for impairment	207	208
Ending balance: collectively evaluated for impairment	8,502	8,764
Ending balance: loans acquired with deteriorated credit quality	0	0
Loans and lease receivables:
Total gross loans and leases receivable	814,446	638,701
Ending balance: individually evaluated for impairment	5,253	5,291
Ending balance: collectively evaluated for impairment	806,051	632,006
Ending balance: loans acquired with deteriorated credit quality	3,142	1,404
Allowance as % of gross loans	1.07%	1.40%
Commercial and industrial
Allowance for credit losses:
Beginning balance	5,067	4,235
Charge-offs	-313	0
Recoveries	0	0
Provision	548	284
Ending balance	5,302	4,519
Ending balance: individually evaluated for impairment	33	239
Ending balance: collectively evaluated for impairment	5,170	4,280
Ending balance: loans acquired with deteriorated credit quality	99	0
Loans and lease receivables:
Total gross loans and leases receivable	426,413	303,630	416,654
Ending balance: individually evaluated for impairment	1,154	6,657
Ending balance: collectively evaluated for impairment	424,608	296,973
Ending balance: loans acquired with deteriorated credit quality	651	0
Allowance as % of gross loans	1.24%	1.49%
Consumer and other
Allowance for credit losses:
Beginning balance	218	273
Charge-offs	0	0
Recoveries	3	5
Provision	67	-2
Ending balance	288	276
Ending balance: individually evaluated for impairment	52	60
Ending balance: collectively evaluated for impairment	236	216
Ending balance: loans acquired with deteriorated credit quality	0	0
Loans and lease receivables:
Total gross loans and leases receivable	25,564	17,526
Ending balance: individually evaluated for impairment	890	1,344
Ending balance: collectively evaluated for impairment	24,440	16,182
Ending balance: loans acquired with deteriorated credit quality	234	0
Allowance as % of gross loans	1.13%	1.57%
Direct financing leases, net
Allowance for credit losses:
Beginning balance	425	338
Charge-offs	0	0
Recoveries	0	0
Provision	-30	-4
Ending balance	395	334
Ending balance: individually evaluated for impairment	0	0
Ending balance: collectively evaluated for impairment	395	334
Ending balance: loans acquired with deteriorated credit quality	0	0
Loans and lease receivables:
Total gross loans and leases receivable	31,644	26,364	34,165
Ending balance: individually evaluated for impairment	0	0
Ending balance: collectively evaluated for impairment	31,644	26,364
Ending balance: loans acquired with deteriorated credit quality	$0	$0
Allowance as % of gross loans	1.25%	1.27%

Recovered_Sheet4

Loan and Lease Receivables, Impaired Loans and Leases and Allowance for Loan and Lease Losses (Narrative Disclosures) (Details) (USD $)	3 Months Ended		12 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014
	loans
Financing Receivable, Recorded Investment
Loans and leases transferred to third parties total principal amount	$15,800,000	$6,200,000
Gain (Loss) Recognized on Participation Interest in Originated Loans	0
Loan participations purchased on the Corporation's balance sheet	479,000		482,000
Total amount of outstanding loans transferred to third parties as loan participations	121,600,000		116,600,000
Total amount of loan participations remaining on the Corporations balance sheet	102,900,000		96,400,000
Loans in the participation sold portfolio, considered impaired	1,100,000
Residential Real Estate Loans Sold, Principal Amount	9,100,000		0
Total gross loans and leases receivable	1,298,067,000	986,221,000	1,281,792,000
Non-accrual troubled debt restructurings	7,300,000		7,400,000
Unfunded commitments, troubled debt restructurings	0
Troubled debt restructurings, subsequent default, number of loans	0
Loans and leases receivable, difference between recorded investment and unpaid principal balance	4,700,000		4,400,000
Performing troubled debt restructurings	1,972,000		2,003,000
Substandard
Financing Receivable, Recorded Investment
Total gross loans and leases receivable	24,200,000		27,100,000
Special Mention
Financing Receivable, Recorded Investment
Total gross loans and leases receivable	0		0
Doubtful
Financing Receivable, Recorded Investment
Total gross loans and leases receivable	0		0
Loss
Financing Receivable, Recorded Investment
Total gross loans and leases receivable	$0		$0

Deposits_Details

Deposits (Details) (USD $)	3 Months Ended	12 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Deposits [Line Items]
Deposits	$1,485,801	$1,438,268
Deposits, weighted average balance	1,482,021	1,208,003
Deposits, weighted average interest rate during the period	0.69%	0.78%
Non-interest-bearing transaction accounts
Deposits [Line Items]
Deposits	194,277	204,328
Deposits, weighted average balance	200,274	154,687
Deposits, weighted average interest rate during the period	0.00%	0.00%
Interest-bearing transaction accounts
Deposits [Line Items]
Deposits	102,739	104,199
Deposits, weighted average balance	107,311	83,508
Deposits, weighted average interest rate during the period	0.22%	0.22%
Money market accounts
Deposits [Line Items]
Deposits	642,560	575,766
Deposits, weighted average balance	625,888	493,322
Deposits, weighted average interest rate during the period	0.55%	0.52%
Certificates of deposit
Deposits [Line Items]
Deposits	115,252	126,635
Deposits, weighted average balance	124,377	60,284
Deposits, weighted average interest rate during the period	0.71%	0.89%
Wholesale deposits
Deposits [Line Items]
Deposits	430,973	427,340
Deposits, weighted average balance	$424,171	$416,202
Deposits, weighted average interest rate during the period	1.36%	1.49%

FHLB_Advances_Other_Borrowings2

FHLB Advances, Other Borrowings and Junior Subordinated Notes Payable (Composition of Borrowed Funds) (Details) (USD $)	3 Months Ended	12 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Composition of Borrowed Funds [Line Items]
Borrowed funds	$44,763	$44,309
Borrowed funds, weighted average balance	43,804	29,020
Borrowed funds, interest rate during period	6.55%	7.24%
Long-term borrowings
Composition of Borrowed Funds [Line Items]
Borrowed funds	40,753	42,299
Short-term borrowings
Composition of Borrowed Funds [Line Items]
Borrowed funds	4,010	2,010
Federal funds purchased
Composition of Borrowed Funds [Line Items]
Borrowed funds	0	0
Borrowed funds, weighted average balance	0	237
Borrowed funds, interest rate during period	0.00%	0.82%
FHLB and Other Borrowings
Composition of Borrowed Funds [Line Items]
Borrowed funds	10,012	10,058
Borrowed funds, weighted average balance	10,042	5,093
Borrowed funds, interest rate during period	1.51%	0.56%
Line of credit
Composition of Borrowed Funds [Line Items]
Borrowed funds	1,510	1,010
Borrowed funds, weighted average balance	521	13
Borrowed funds, interest rate during period	3.24%	3.30%
Subordinated notes payable
Composition of Borrowed Funds [Line Items]
Borrowed funds	22,926	22,926
Borrowed funds, weighted average balance	22,926	13,362
Borrowed funds, interest rate during period	6.94%	7.07%
Junior subordinated notes
Composition of Borrowed Funds [Line Items]
Borrowed funds	10,315	10,315
Borrowed funds, weighted average balance	$10,315	$10,315
Borrowed funds, interest rate during period	10.64%	10.78%

FHLB_Advances_Other_Borrowings3

FHLB Advances, Other Borrowings and Junior Subordinated Notes Payable (Narrative Disclosures) (Details) (Line of credit, USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015
Line of credit
Line of Credit Facility [Line Items]
Line of credit - unused line fee	$3

Fair_Value_Disclosures_Measure

Fair Value Disclosures (Measured on a Recurring Basis) (Details) (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Thousands, unless otherwise specified
Interest rate swaps
Fair Value, Assets and Liabilities Measured on a Recurring Basis
Liabilities measured on a recurring basis, fair value	$956	$575
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	956	575
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	956	575
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	956	575
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
Municipal obligations
Fair Value, Assets and Liabilities Measured on a Recurring Basis
Assets measured on a recurring basis, fair value	578	578
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	578	578
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	1,494	1,510
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	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	1,494	1,510
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	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	8,047	8,965
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	8,047	8,965
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
Collateralized mortgage obligations - government issued
Fair Value, Assets and Liabilities Measured on a Recurring Basis
Assets measured on a recurring basis, fair value	62,669	68,874
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	62,669	68,874
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	70,163	64,771
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	70,163	64,771
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_Measure1

Fair Value Disclosures (Measured on a Non-Recurring Basis) (Details) (USD $)	3 Months Ended	12 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Fair Value, Assets and Liabilities Measured on a Nonrecurring Basis
Total gains (losses) on impaired loans	$0	$0
Total gains (losses) on foreclosed properties	0	-4
Loan servicing rights	1,027	943
Total gains (losses) on servicing assets	0	0
Impaired loans
Fair Value, Assets and Liabilities Measured on a Nonrecurring Basis
Assets measured on a non-recurring basis, fair value	8,363	8,565
Impaired loans | Fair Value Measurements - Level 1 Inputs
Fair Value, Assets and Liabilities Measured on a Nonrecurring Basis
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 a Nonrecurring Basis
Assets measured on a non-recurring basis, fair value	6,739	7,025
Impaired loans | Fair Value Measurements - Level 3 Inputs
Fair Value, Assets and Liabilities Measured on a Nonrecurring Basis
Assets measured on a non-recurring basis, fair value	1,624	1,540
Foreclosed properties
Fair Value, Assets and Liabilities Measured on a Nonrecurring Basis
Assets measured on a non-recurring basis, fair value	1,566	1,693
Foreclosed properties | Fair Value Measurements - Level 1 Inputs
Fair Value, Assets and Liabilities Measured on a Nonrecurring Basis
Assets measured on a non-recurring basis, fair value	0	0
Loan servicing rights	0	0
Foreclosed properties | Fair Value Measurements - Level 2 Inputs
Fair Value, Assets and Liabilities Measured on a Nonrecurring Basis
Assets measured on a non-recurring basis, fair value	1,566	1,693
Loan servicing rights	0	0
Foreclosed properties | Fair Value Measurements - Level 3 Inputs
Fair Value, Assets and Liabilities Measured on a Nonrecurring Basis
Assets measured on a non-recurring basis, fair value	0	0
Loan servicing rights	$1,027	$943

Fair_Value_Disclosures_Foreclo

Fair Value Disclosures (Foreclosed Properties) (Details) (USD $)	3 Months Ended		12 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014
Fair Value Disclosures [Abstract]
Repossessed Assets Acquired in Acquisitions, Fair Value	$0		$1,605
Foreclosed properties at the beginning of the period	1,693	333	333
Proceeds from sale of foreclosed properties	-143	0	-255
Net Gains (Losses) on Other Real Estate	16		14
Gains (Losses) on Sales of Other Real Estate	16	0
Impairment valuation	0		-4
Foreclosed properties at the end of the period	$1,566		$1,693

Fair_Value_Disclosures_Fair_Va

Fair Value Disclosures (Fair Value by Balance Sheet Groupings) (Details) (USD $)	Mar. 31, 2015	Dec. 31, 2014	Mar. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Financial assets:
Cash and cash equivalents, carrying amount	$141,887	$103,237	$76,396	$81,286
Securities available-for-sale, carrying amount	142,951	144,698
Securities held-to-maturity, carrying value	40,599	41,563
Loans and leases receivable, net amount, carrying amount	1,279,846	1,265,098
Federal Home Loan Bank stock, carrying amount	2,798	2,340
Cash surrender value of life insurance, carrying amount	27,548	27,314
Accrued interest receivable, carrying amount	4,146	3,932
Interest rate swaps - assets, carrying amount	956	575
Cash and cash equivalents, fair value	141,887	103,227
Securities available-for-sale, fair value	142,951	144,698
Loans held-for-sale	2,396	1,340
Held-to-maturity Securities, fair value	41,147	41,694
Loans and lease receivables, net, fair value	1,310,067	1,285,162
Federal Home Loan Bank stock, fair value	2,798	2,340
Cash surrender value of life insurance, fair value	27,548	27,314
Accrued interest receivable, fair value	4,146	3,932
Interest rate swaps - assets, fair value	956	575
Financial liabilities:
Deposits, carrying amount	1,485,801	1,438,268
Federal Home Loan Bank and other borrowings, carrying amount	34,448	33,994
Junior subordinated notes, carrying amount	10,315	10,315
Interest rate swaps - liabilities, carrying amount	956	575
Accrued interest payable, carrying amount	1,744	1,574
Standby letters of credit, carrying amount	128	192
Commitments to extend credit, carrying amount	0	0
Deposits, fair value	1,489,399	1,440,248
Federal Home Loan Bank and other borrowings fair value	35,080	34,590
Junior subordinated notes, fair value	7,086	7,101
Interest rate swaps - liabilities, fair value	956	575
Accrued interest payable, fair value	1,744	1,574
Standby letters of credit, fair value	128	192
Fair Value Measurements - Level 1 Inputs
Financial assets:
Cash and cash equivalents, fair value	120,127	85,937
Securities available-for-sale, fair value	0	0
Loans held-for-sale	0	0
Held-to-maturity Securities, fair value	0	0
Loans and lease receivables, net, fair value	0	0
Federal Home Loan Bank stock, fair value	0	0
Cash surrender value of life insurance, fair value	27,548	27,314
Accrued interest receivable, fair value	4,146	3,932
Interest rate swaps - assets, fair value	0	0
Financial liabilities:
Deposits, fair value	939,576	884,292
Federal Home Loan Bank and other borrowings fair value	0	0
Junior subordinated notes, fair value	0	0
Interest rate swaps - liabilities, fair value	0	0
Accrued interest payable, fair value	1,744	1,574
Standby letters of credit, fair value	0	0
Fair Value Measurements - Level 2 Inputs
Financial assets:
Cash and cash equivalents, fair value	6,410	6,890
Securities available-for-sale, fair value	142,951	144,698
Loans held-for-sale	2,396	1,340
Held-to-maturity Securities, fair value	41,147	41,694
Loans and lease receivables, net, fair value	6,739	7,025
Federal Home Loan Bank stock, fair value	0	0
Cash surrender value of life insurance, fair value	0	0
Accrued interest receivable, fair value	0	0
Interest rate swaps - assets, fair value	956	575
Financial liabilities:
Deposits, fair value	549,823	555,956
Federal Home Loan Bank and other borrowings fair value	35,080	34,590
Junior subordinated notes, fair value	0	0
Interest rate swaps - liabilities, fair value	956	575
Accrued interest payable, fair value	0	0
Standby letters of credit, fair value	0	0
Fair Value Measurements - Level 3 Inputs
Financial assets:
Cash and cash equivalents, fair value	15,350	10,400
Securities available-for-sale, fair value	0	0
Loans held-for-sale	0	0
Held-to-maturity Securities, fair value	0	0
Loans and lease receivables, net, fair value	1,303,328	1,278,137
Federal Home Loan Bank stock, fair value	2,798	2,340
Cash surrender value of life insurance, fair value	0	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	7,086	7,101
Interest rate swaps - liabilities, fair value	0	0
Accrued interest payable, fair value	0	0
Standby letters of credit, fair value	$128	$192

Fair_Value_Disclosures_Narrati

Fair Value Disclosures (Narrative Disclosures) (Details) (USD $)	3 Months Ended		12 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014
Fair Value Inputs, Assets, Quantitative Information
Loan servicing rights	$1,027,000		$943,000
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	15,400,000		10,400,000
Certificates of deposit, at carrying value	6,400,000		6,900,000
Impairment of Real Estate	0		4,000
Minimum
Fair Value Inputs, Assets, Quantitative Information
Quantification of unobservable inputs for level 3 values for impaired loans	10.00%
Maximum
Fair Value Inputs, Assets, Quantitative Information
Quantification of unobservable inputs for level 3 values for impaired loans	100.00%
Weighted Average
Fair Value Inputs, Assets, Quantitative Information
Quantification of unobservable inputs for level 3 values for impaired loans	34.00%
Impaired loans
Fair Value Inputs, Assets, Quantitative Information
Assets measured on a non-recurring basis, fair value	8,363,000		8,565,000
Foreclosed properties
Fair Value Inputs, Assets, Quantitative Information
Assets measured on a non-recurring basis, fair value	1,566,000		1,693,000
Fair Value Measurements - Level 3 Inputs | Impaired loans
Fair Value Inputs, Assets, Quantitative Information
Assets measured on a non-recurring basis, fair value	1,624,000		1,540,000
Fair Value Measurements - Level 3 Inputs | Foreclosed properties
Fair Value Inputs, Assets, Quantitative Information
Loan servicing rights	1,027,000		943,000
Assets measured on a non-recurring basis, fair value	$0		$0
Assets, fair value disclosure, nonrecurring, number of foreclosed properties	0

Derivative_Financial_Instrumen3

Derivative Financial Instruments (Details) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014
Derivatives not designated as hedging instruments, fair value
Interest rate swap contracts not designated as hedging instruments - assets, gross	956		$575
Interest rate swap contracts not designated as hedging instruments - liabilities, gross	956		$575
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	Other assets	Other assets
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	Other liabilities	Other liabilities

Derivative_Financial_Instrumen4

Derivative Financial Instruments (Narrative Disclosures) (Details) (USD $)	3 Months Ended
	Mar. 31, 2015	Dec. 31, 2014
Derivatives
Interest rate swap contracts not designated as hedging instruments - assets, gross	$956,000	$575,000
Interest rate swap contracts not designated as hedging instruments - liabilities, gross	956,000	575,000
Derivative asset, fair value, amount offset against collateral	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
Interest rate swap contracts not designated as hedging instruments - assets, gross	956,000
To commercial borrowers, corporation receives fixed rates and pays floating rates | Minimum
Derivatives
Derivative, maturity date	15-Mar-16
To commercial borrowers, corporation receives fixed rates and pays floating rates | Maximum
Derivatives
Derivative, maturity date	15-Feb-23
To dealer countparties, corporation pays fixed rates and receives floating rates
Derivatives
Interest rate swap contracts not designated as hedging instruments - liabilities, gross	956,000
Interest rate derivative instruments not designated as hedging instruments at fair value, net	956,000
To dealer countparties, corporation pays fixed rates and receives floating rates | Minimum
Derivatives
Derivative, maturity date	15-Mar-16
To dealer countparties, corporation pays fixed rates and receives floating rates | Maximum
Derivatives
Derivative, maturity date	15-Feb-23
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	27,400,000
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	$27,400,000

Regulatory_Capital_Regulatory_

Regulatory Capital (Regulatory Capital Ratios) (Details) (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Thousands, unless otherwise specified
Compliance with Regulatory Capital Requirements under Banking Regulations
Total capital	$177,594	$173,263
Total capital to risk-weighted assets	11.40%	12.13%
Total capital, Minimum Required for Capital Adequacy Purposes	124,677	114,253
Total capital to risk-weighted assets, Minimum Required for Capital Adequacy Purposes	8.00%	8.00%
Tier 1 capital	139,974	136,008
Tier 1 Capital to Risk-Weighted Assets	8.98%	9.52%
Tier 1 Capital, Minimum Required for Capital Adequacy Purposes	93,508	57,127
Tier 1 capital to risk-weighted assets, Minimum Required for Capital Adequacy Purposes	6.00%	4.00%
Common Equity Tier One Capital	129,974
Common Equity Tier One Capital to Risk-Weighted Assets	8.34%
Common Equity Tier One Capital Required for Capital Adequacy	70,131
Common Equity Tier One Capital Required for Capital Adequacy to Risk-Weighted Assets	4.50%
Tier 1 capital	139,974	136,008
Tier 1 leverage capital to average assets	8.42%	8.71%
Tier 1 leverage capital, Minimum Required for Capital Adequacy Purposes	5,199	62,490
Tier 1 leverage capital to average assets, Minimum Required for Capital Adequacy Purposes	4.00%	4.00%
First Business Bank
Compliance with Regulatory Capital Requirements under Banking Regulations
Total capital	133,667	131,411
Total capital to risk-weighted assets	11.47%	12.19%
Total capital, Minimum Required for Capital Adequacy Purposes	93,216	86,272
Total capital to risk-weighted assets, Minimum Required for Capital Adequacy Purposes	8.00%	8.00%
Total capital, Minimum Required to be Well Capitalized Under Prompt Corrective Action Requirements	116,544	107,841
Total capital to risk-weighted assets, Minimum Required to be Well Capitalized Under Prompt Corrective Action Requirements	10.00%	10.00%
Tier 1 capital	121,166	118,907
Tier 1 Capital to Risk-Weighted Assets	10.40%	11.03%
Tier 1 Capital, Minimum Required for Capital Adequacy Purposes	69,912	43,136
Tier 1 capital to risk-weighted assets, Minimum Required for Capital Adequacy Purposes	6.00%	4.00%
Tier 1 capital, Minimum Required to be Well Capitalized Under Prompt Corrective Action Requirements	93,235	64,704
Tier 1 capital to risk weighted assets, Minimum Required to be Well Capitalized Under Prompt Corrective Action Requirements	8.00%	6.00%
Common Equity Tier One Capital	121,166
Common Equity Tier One Capital to Risk-Weighted Assets	10.40%
Common Equity Tier One Capital Required for Capital Adequacy	52,434
Common Equity Tier One Capital Required for Capital Adequacy to Risk-Weighted Assets	4.50%
Common Equity Tier One Capital to be Well Capitalized	101,318
Common Equity Tier One Capital Required to be Well Capitalized to Risk-Weighted Assets	6.50%
Tier 1 capital	121,166	118,907
Tier 1 leverage capital to average assets	10.33%	10.13%
Tier 1 leverage capital, Minimum Required for Capital Adequacy Purposes	4,847	46,960
Tier 1 leverage capital to average assets, Minimum Required for Capital Adequacy Purposes	4.00%	4.00%
Tier 1 leverage capital, Minimum Required to be Well Capitalized Under Prompt Corrective Action Requirements	6,061	58,700
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	19,215	19,128
Total capital to risk-weighted assets	12.17%	12.47%
Total capital, Minimum Required for Capital Adequacy Purposes	12,626	12,274
Total capital to risk-weighted assets, Minimum Required for Capital Adequacy Purposes	8.00%	8.00%
Total capital, Minimum Required to be Well Capitalized Under Prompt Corrective Action Requirements	15,783	15,343
Total capital to risk-weighted assets, Minimum Required to be Well Capitalized Under Prompt Corrective Action Requirements	10.00%	10.00%
Tier 1 capital	17,721	17,641
Tier 1 Capital to Risk-Weighted Assets	11.23%	11.50%
Tier 1 Capital, Minimum Required for Capital Adequacy Purposes	9,470	6,137
Tier 1 capital to risk-weighted assets, Minimum Required for Capital Adequacy Purposes	6.00%	4.00%
Tier 1 capital, Minimum Required to be Well Capitalized Under Prompt Corrective Action Requirements	12,626	9,206
Tier 1 capital to risk weighted assets, Minimum Required to be Well Capitalized Under Prompt Corrective Action Requirements	8.00%	6.00%
Common Equity Tier One Capital	17,721
Common Equity Tier One Capital to Risk-Weighted Assets	11.23%
Common Equity Tier One Capital Required for Capital Adequacy	7,102
Common Equity Tier One Capital Required for Capital Adequacy to Risk-Weighted Assets	4.50%
Common Equity Tier One Capital to be Well Capitalized	75,753
Common Equity Tier One Capital Required to be Well Capitalized to Risk-Weighted Assets	6.50%
Tier 1 capital	17,721	17,641
Tier 1 leverage capital to average assets	7.56%	7.90%
Tier 1 leverage capital, Minimum Required for Capital Adequacy Purposes	709	8,935
Tier 1 leverage capital to average assets, Minimum Required for Capital Adequacy Purposes	4.00%	4.00%
Tier 1 leverage capital, Minimum Required to be Well Capitalized Under Prompt Corrective Action Requirements	886	11,169
Tier 1 leverage capital to average assets, Minimum Required to be Well Capitalized Under Prompt Corrective Action Requirements	5.00%	5.00%
Alterra Bank [Member]
Compliance with Regulatory Capital Requirements under Banking Regulations
Total capital	26,346	22,657
Total capital to risk-weighted assets	11.05%	10.90%
Total capital, Minimum Required for Capital Adequacy Purposes	19,072	16,628
Total capital to risk-weighted assets, Minimum Required for Capital Adequacy Purposes	8.00%	8.00%
Total capital, Minimum Required to be Well Capitalized Under Prompt Corrective Action Requirements	23,841	20,785
Total capital to risk-weighted assets, Minimum Required to be Well Capitalized Under Prompt Corrective Action Requirements	10.00%	10.00%
Tier 1 capital	25,647	22,320
Tier 1 Capital to Risk-Weighted Assets	10.76%	10.74%
Tier 1 Capital, Minimum Required for Capital Adequacy Purposes	14,304	8,314
Tier 1 capital to risk-weighted assets, Minimum Required for Capital Adequacy Purposes	6.00%	4.00%
Tier 1 capital, Minimum Required to be Well Capitalized Under Prompt Corrective Action Requirements	19,073	12,471
Tier 1 capital to risk weighted assets, Minimum Required to be Well Capitalized Under Prompt Corrective Action Requirements	8.00%	6.00%
Common Equity Tier One Capital	25,647
Common Equity Tier One Capital to Risk-Weighted Assets	10.76%
Common Equity Tier One Capital Required for Capital Adequacy	10,728
Common Equity Tier One Capital Required for Capital Adequacy to Risk-Weighted Assets	4.50%
Common Equity Tier One Capital to be Well Capitalized	10,259
Common Equity Tier One Capital Required to be Well Capitalized to Risk-Weighted Assets	6.50%
Tier 1 capital	25,647	22,320
Tier 1 leverage capital to average assets	9.68%	9.01%
Tier 1 leverage capital, Minimum Required for Capital Adequacy Purposes	1,026	9,910
Tier 1 leverage capital to average assets, Minimum Required for Capital Adequacy Purposes	4.00%	4.00%
Tier 1 leverage capital, Minimum Required to be Well Capitalized Under Prompt Corrective Action Requirements	$1,270	$12,388
Tier 1 leverage capital to average assets, Minimum Required to be Well Capitalized Under Prompt Corrective Action Requirements	5.00%	5.00%

Regulatory_Capital_Narrative_D

Regulatory Capital (Narrative Disclosures) (Details)	3 Months Ended
	Mar. 31, 2015
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 Banks’ assets, liabilities and certain off-balance-sheet items as calculated under regulatory practices.