Old Second Bancorp (OSBC) 10-Q 7 May 19 2019 Q1 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	3 Months Ended
	Mar. 31, 2019	May 02, 2019
Document and Entity Information
Entity Registrant Name	OLD SECOND BANCORP INC
Entity Central Index Key	0000357173
Document Type	10-Q
Document Period End Date	Mar. 31, 2019
Amendment Flag	false
Current Fiscal Year End Date	--12-31
Entity Current Reporting Status	Yes
Entity Filer Category	Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Common Stock, Shares Outstanding		29,896,529
Document Fiscal Year Focus	2019
Document Fiscal Period Focus	Q1

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Assets
Cash and due from banks	$ 28,898	$ 38,599
Interest bearing deposits with financial institutions	11,438	16,636
Cash and cash equivalents	40,336	55,235
Securities available-for-sale, at fair value	509,090	541,248
Federal Home Loan Bank Chicago ("FHLBC") and Federal Reserve Bank Chicago ("FRBC") stock	11,179	13,433
Loans held-for-sale	2,134	2,984
Loans	1,903,146	1,897,027
Less: allowance for loan losses	19,316	19,006
Net loans	1,883,830	1,878,021
Premises and equipment, net	42,025	42,439
Other real estate owned	6,365	7,175
Mortgage servicing rights, net	6,715	7,357
Goodwill and core deposit intangible	21,682	21,814
Bank-owned life insurance (BOLI)	62,002	61,544
Deferred tax assets, net	17,271	21,280
Other assets	20,902	23,473
Total assets	2,623,531	2,676,003
Deposits:
Noninterest bearing demand	629,909	618,830
Interest bearing:
Savings, NOW, and money market	1,061,216	1,040,668
Time	432,387	457,175
Total deposits	2,123,512	2,116,673
Securities sold under repurchase agreements	42,361	46,632
Other short-term borrowings	85,000	149,500
Junior subordinated debentures	57,698	57,686
Senior notes	44,183	44,158
Notes payable and other borrowings	13,207	15,379
Other liabilities	14,315	16,894
Total liabilities	2,380,276	2,446,922
Stockholders' Equity
Common stock	34,825	34,720
Additional paid-in capital	119,126	119,081
Retained earnings	183,634	175,463
Accumulated other comprehensive (loss) income	1,736	(4,079)
Treasury stock	(96,066)	(96,104)
Total stockholders' equity	243,255	229,081
Total liabilities and stockholders' equity	$ 2,623,531	$ 2,676,003

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - $ / shares	Mar. 31, 2019	Dec. 31, 2018
Consolidated Balance Sheets
Common stock, Par value (in dollars per share)	$ 1	$ 1
Common Stock, Shares authorized	60,000,000	60,000,000
Common stock, Shares issued	34,825,340	34,719,517
Common stock, Shares outstanding	29,895,022	29,763,078
Treasury stock, Shares	4,930,318	4,956,439

Consolidated Statements of Inco

Consolidated Statements of Income - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Interest and Dividend Income
Loans, including fees	$ 24,099	$ 18,732
Loans held-for-sale	22	24
Securities:
Taxable	2,414	2,170
Tax exempt	2,098	2,061
Dividends from FHLBC and FRBC stock	149	106
Interest bearing deposits with financial institutions	114	49
Total interest and dividend income	28,896	23,142
Interest Expense
Savings, NOW, and money market deposits	771	344
Time deposits	1,618	1,175
Securities sold under repurchase agreements	149	79
Other short-term borrowings	607	329
Junior subordinated debentures	927	927
Senior notes	672	672
Notes payable and other borrowings	116
Total interest expense	4,860	3,526
Net interest and dividend income	24,036	19,616
Provision for loan and lease losses	450	(722)
Net interest and dividend income after provision for loan and lease losses	23,586	20,338
Noninterest Income
Mortgage servicing rights mark to market loss	(819)	305
Net gain on sales of mortgage loans	762	917
Securities gains (losses), net	27	35
Increase in cash surrender value of BOLI	458	248
Death benefit realized on bank-owned life insurance		1,026
Debit card interchange income	987	1,012
Other income	1,126	1,261
Total noninterest income	6,482	8,505
Noninterest Expense
Salaries and employee benefits	11,612	10,207
Occupancy, furniture and equipment	1,989	1,558
Computer and data processing	1,332	1,344
FDIC insurance	174	156
General bank insurance	250	251
Amortization of core deposit intangible	132	21
Advertising expense	234	341
Debit card interchange expense	147	281
Legal fees	126	159
Other real estate expense, net	50	173
Other expense	3,148	2,863
Total noninterest expense	19,194	17,354
Income before income taxes	10,874	11,489
Provision for income taxes	2,406	2,000
Net income available to common stockholders	$ 8,468	$ 9,489
Basic earnings per share (in dollars per share)	$ 0.28	$ 0.32
Diluted earnings per share (in dollars per share)	0.28	0.31
Dividends declared per share (in dollars per share)	$ 0.01	$ 0.01
Deposit Account
Noninterest Income
Service charges on deposits	$ 1,862	$ 1,592
Trust Income
Noninterest Income
Service charges on deposits	1,486	1,495
Bank Servicing
Noninterest Income
Service charges on deposits	457	452
Secondary mortgage fees
Noninterest Income
Service charges on deposits	$ 136	$ 162

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Consolidated Statements of Comprehensive Income
Net income	$ 8,468	$ 9,489
Unrealized holding (losses) gains on available-for-sale securities arising during the period	9,192	(8,808)
Related tax benefit (expense)	(2,587)	2,484
Holding (losses) gains after tax on available-for-sale securities	6,605	(6,324)
Less: Reclassification adjustment for the net gains (losses) realized during the period
Net realized gains (losses)	27	35
Related tax (expense) benefit	(8)	(10)
Net realized gains (losses) after tax	19	25
Other comprehensive (loss) income on available-for-sale securities	6,586	(6,349)
Changes in fair value of derivatives used for cashflow hedges	(1,073)	1,279
Related tax (expense) benefit	302	(362)
Other comprehensive income on cashflow hedges	(771)	917
Total other comprehensive (loss) income	5,815	(5,432)
Total comprehensive income	$ 14,283	$ 4,057

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Cash flows from operating activities
Net income	$ 8,468	$ 9,489
Adjustments to reconcile net income to net cash provided by (used in) operating activities:
Net premium amortization/discount (accretion) on securities	723	706
Securities (gains) losses, net	(27)	(35)
Provision for (release of) loan and lease losses	450	(722)
Originations of loans held-for-sale	(25,815)	(31,096)
Proceeds from sales of loans held-for-sale	27,224	33,305
Net gain on sales of mortgage loans	(762)	(917)
Change in fair value of mortgage servicing rights	819	(305)
Net discount / premium from (accretion) amortization on loans	(110)	51
Increase in cash surrender value of BOLI	(458)	(248)
Net gains on sale of other real estate owned	(73)	(80)
Provision for other real estate owned valuation losses		112
Depreciation of fixed assets and amortization of leasehold improvements	638	537
Amortization of core deposit intangible	132	21
Change in current income taxes receivable	673	1,093
Provision for deferred tax expense	1,732	907
Change in accrued interest receivable and other assets	136	(4,081)
Accretion of purchase accounting adjustment on time deposits	(25)
Amortization of purchase accounting adjustment on notes payable and other borrowings	27
Amortization of junior subordinated debentures issuance costs	12	11
Amortization of senior notes issuance costs	25	25
Change in accrued interest payable and other liabilities	(1,864)	(152)
Stock based compensation	573	395
Net cash provided by operating activities	12,498	9,016
Cash flows from investing activities
Proceeds from maturities and calls including pay down of securities available-for-sale	5,279	2,391
Proceeds from sales of securities available-for-sale	81,524	2,522
Purchases of securities available-for-sale	(46,176)	(23,930)
Net proceeds from sales of FHLBC stock	2,254	2,700
Net change in loans	(6,140)	17,208
Proceeds from claims on BOLI		1,204
Improvements in other real estate owned		(59)
Proceeds from sales of other real estate owned, net of participation purchase	874	1,335
Net purchases of premises and equipment	(224)	(118)
Net cash provided by investing activities	37,391	3,253
Cash flows from financing activities
Net change in deposits	6,864	39,123
Net change in securities sold under repurchase agreements	(4,271)	11,448
Net change in other short-term borrowings	(64,500)	(70,000)
Net change in notes payable and other borrowings	(2,199)
Proceeds from exercise of stock options	32
Dividends paid common stock	(297)	(296)
Purchase of treasury stock	(417)	(505)
Net cash used in financing activities	(64,788)	(20,230)
Net change in cash and cash equivalents	(14,899)	(7,961)
Cash and cash equivalents at beginning of period	55,235	55,833
Cash and cash equivalents at end of period	$ 40,336	$ 47,872

Consolidated Statements of Chan

Consolidated Statements of Changes in Stockholders' Equity - USD ($) $ in Thousands	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Treasury Stock	Total
Balance at Dec. 31, 2017	$ 34,626	$ 117,742	$ 142,959	$ 1,479	$ (96,456)	$ 200,350
Increase (Decrease) in Stockholders' Equity
Net income			9,489			9,489
Other comprehensive income, net of tax				(5,432)		(5,432)
Dividends declared and paid			(296)			(296)
Vesting of restricted stock	91	(758)			667
Reclassification of stranded tax effects			(319)	319
Stock based compensation		395				395
Purchase of treasury stock					(505)	(505)
Balance at Mar. 31, 2018	34,717	117,379	151,833	(3,634)	(96,294)	204,001
Balance at Dec. 31, 2018	34,720	119,081	175,463	(4,079)	(96,104)	229,081
Increase (Decrease) in Stockholders' Equity
Net income			8,468			8,468
Other comprehensive income, net of tax				5,815		5,815
Dividends declared and paid			(297)			(297)
Vesting of restricted stock	103	(222)			119
Stock options exercised	2	7			23	32
Stock warrants exercised		(313)			313
Stock based compensation		573				573
Purchase of treasury stock					(417)	(417)
Balance at Mar. 31, 2019	$ 34,825	$ 119,126	$ 183,634	$ 1,736	$ (96,066)	$ 243,255

Consolidated Statements of Ch_2

Consolidated Statements of Changes in Stockholders' Equity (Parenthetical) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance	$ 229,081	$ 200,350
Other comprehensive income, net of tax	5,815	(5,432)
Balance	$ 243,255	$ 204,001
Dividend declared and paid (per share)	$ 0.01	$ 0.01
Accumulated Other Comprehensive Income (Loss) [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance	$ (4,079)	$ 1,479
Reclassification of stranded tax effects		319
Other comprehensive income, net of tax	5,815	(5,432)
Balance	1,736	(3,634)
Accumulated Unrealized Loss on Securities Available-for-Sale
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance	(4,038)	2,239
Reclassification of stranded tax effects		482
Other comprehensive income, net of tax	6,586	(6,350)
Balance	2,548	(3,629)
Accumulated Unrealized Loss on Derivative Instruments
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance	(41)	(760)
Reclassification of stranded tax effects		(163)
Other comprehensive income, net of tax	(771)	918
Balance	$ (812)	$ (5)

Summary of Significant Accounti

Summary of Significant Accounting Policies	3 Months Ended
	Mar. 31, 2019
Summary of Significant Accounting Policies
Summary of Significant Accounting Policies	Note 1 – Summary of Significant Accounting Policies The accounting policies followed in the preparation of the interim consolidated financial statements are consistent with those used in the preparation of the annual financial information. The interim consolidated financial statements reflect all normal and recurring adjustments that are necessary, in the opinion of management, for a fair statement of results for the interim period presented. Results for the period ended March 31, 2019, are not necessarily indicative of the results that may be expected for the year ending December 31, 2019. These interim consolidated financial statements are unaudited and should be read in conjunction with the audited financial statements and notes included in Old Second Bancorp, Inc.’s (the “Company”) annual report on Form 10-K for the year ended December 31, 2018. Unless otherwise indicated, amounts in the tables contained in the notes to the consolidated financial statements are in thousands. Certain items in prior periods have been reclassified to conform to the current presentation. The Company’s consolidated financial statements are prepared in accordance with United States generally accepted accounting principles (“GAAP”) and follow general practices within the banking industry. Application of these principles requires management to make estimates, assumptions, and judgments that affect the amounts reported in the consolidated financial statements and accompanying notes. These estimates, assumptions, and judgments are based on information available as of the date of the consolidated financial statements. Future changes in information may affect these estimates, assumptions, and judgments, which, in turn, may affect amounts reported in the consolidated financial statements. Significant accounting policies are presented in Note 1 to the consolidated financial statements included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2018. These policies, along with the disclosures presented in the other financial statement notes and in this discussion, provide information on how significant assets and liabilities are valued in the consolidated financial statements and how those values are determined. Recent Accounting Pronouncements In February 2016, the FASB issued ASU No. 2016-02 “ Leases (Topic 842) .” This ASU was issued to increase transparency and comparability among organizations by recognizing lease assets and liabilities on the balance sheet and disclosing key information about leasing arrangements. One key revision from prior guidance was to include operating leases within assets and liabilities recorded; another revision was to create a new model to follow for sale-leaseback transactions. The impact of this pronouncement will primarily affect lessees, as virtually all of their assets will be recognized on the balance sheet, by recording a right of use asset and lease liability. This pronouncement is effective for fiscal years beginning after December 15, 2018. In July 2018, the FASB issued ASU No. 2018-11, “Leases (Topic 842): Targeted Improvements ” which provided additional guidance on the transition method, including application as a cumulative-effect adjustment to equity and practical expedients to use when accounting for lease components. The Company adopted this standard as of January 1, 2019, and recorded right of use assets of $817,000 with a like lease liability. As of March 31, 2019, the right of use assets and lessee lease liability totaled $672,000. The Company also recorded leases receivable related to lessor leases of $174,000 as of January 1, 2019 with a like entry to lease liabilities for the lessor position; these tenant leases receivable balances and lessor lease liabilities totaled $142,000 as of March 31, 2019. As no lease incentives, initial direct costs, or prepayments were present with any of these lease arrangements, the present value of the lessee liabilities and lessor receivables was equal to the offsetting right of use assets and lessor lease liabilities, respectively. There was no impact to equity for the adoption of this standard on a modified retrospective basis. In June 2016, the FASB issued ASU No. 2016-13 “ Measurement of Credit Losses on Financial Instruments (Topic 326). ” ASU 2016-13 was issued to provide financial statement users with more useful information about the expected credit losses on financial instruments and other commitments to extend credit held by a reporting entity at each reporting date to enhance the decision making process. The new methodology to be used should reflect expected credit losses based on relevant vintage historical information, supported by reasonable forecasts of projected loss given defaults, which will affect the collectability of the reported amounts. This new methodology will also require available-for-sale debt securities to have a credit loss recorded through an allowance rather than write-downs. ASU 2016-13 is effective for financial statements issued for fiscal years beginning after December 15, 2019. The Company is assessing the impact of ASU 2016-13 on its accounting and disclosures, and has determined that a loss rate model will be used for calculation of future risk assessments upon the ASU’s adoption in 2020. The Company has accumulated historical data by loan pools and collateral classifications, and is on track to calculate estimates for at least two quarters in 2019 on a test basis to confirm the model processes and determine financial statement impact prior to adoption in 2020. The Company is also developing internal control processes and disclosure documentation related to adoption of this standard. Subsequent Events On April 16, 2019, the Company’s Board of Directors declared a cash dividend of $0.01 per share payable on May 6, 2019, to stockholders of record as of April 26, 2019; dividends of $298,000 were paid to stockholders on May 6, 2019.

Acquisitions

Acquisitions	3 Months Ended
	Mar. 31, 2019
Acquisitions
Acquisitions	Note 2 – Acquisitions On April 20, 2018, the Company acquired Greater Chicago Financial Corp. (“GCFC”) and its wholly-owned subsidiary, ABC Bank, which operated four branches in the Chicago metro area. In addition to the acquisition price of $41.1 million, the Company retired the convertible and nonconvertible debentures held by GCFC upon acquisition, which totaled $6.6 million, including interest due. The purchase and the retirement of the debentures were funded with the Company’s cash on hand, and all GCFC common stock was retired and cancelled simultaneous with the close of the transaction. The Company acquired $227.6 million of loans, net of purchase accounting adjustments, and $248.5 million of deposits, net of purchase accounting adjustments for time deposits. Purchase accounting adjustments recorded include a loan valuation mark of $11.2 million, a core deposit intangible of $3.1 million, a fixed asset valuation adjustment of $1.5 million, and goodwill of $10.2 million. In addition, a deferred tax asset of $3.5 million was recorded as of the date of acquisition based on analysis of the fair value of assets acquired, less liabilities assumed. None of the $10.2 million recorded as goodwill is expected to be deductible for tax purposes. No acquisition related costs were incurred in the first quarter of 2019. Acquisition related costs incurred by the Company for the year ended December 31, 2018, totaled $3.5 million, pre-tax, and included $1.1 million of salaries and employee benefits related expenses, and $1.8 million of data processing, computer and ATM related conversion costs. Acquisition costs incurred for the year ending December 31, 2017, related to the merger with GCFC were $65,000, and were expensed as incurred. The assets and liabilities associated with the acquisition of GCFC were recorded in the Consolidated Balance Sheets at their estimated fair values as of the acquisition date. In many cases the determination of these fair values required management to make estimates about discount rates, future expected cash flows, market conditions and other future events that are highly subjective in nature and subject to change, as noted below. The following table shows the estimated fair value of the assets acquired and liabilities assumed as of April 20, 2018. These fair value estimates are considered final as of March 31, 2019, and no further refinements to the values listed below are anticipated. The below table summarizes the assets acquired, less the liabilities assumed, related to the GCFC/ABC Bank acquisition. All amounts are listed at their estimated fair values as of date of acquisition, and have been accounted for under the acquisition method of accounting. GCFC/ABC Bank Acquisition Summary As of Date of Acquisition April 20, 2018 Assets Cash and due from banks $ 6,669 Interest bearing deposits with financial institutions 500 Securities available-for-sale, at fair value 72,091 Federal funds sold 4,300 FHLBC stock 1,549 Loans 227,594 Premises and equipment 5,339 Other real estate owned 401 Goodwill and core deposit intangible 13,280 Deferred tax assets, net 3,459 Other assets 1,767 Total assets $ 336,949 Liabilities Noninterest bearing demand $ 58,005 Savings, NOW and money market 91,494 Time 98,999 Total deposits 248,498 Securities sold under repurchase agreements 5,623 Other short-term borrowings 10,875 Notes payable and other borrowings 23,367 Other liabilities 1,406 Total liabilities 289,769 Cash consideration paid 47,180 Total Liabilities Assumed and Cash Consideration Paid for Acquisition $ 336,949 Loans acquired in the GCFC acquisition were initially recorded at fair value with no separate allowance for loan losses. The Company reviewed the loans at acquisition to determine which loans should be considered purchased credit impaired (“PCI loans”) defining impaired loans as those that were either not accruing interest or exhibited credit risk factors consistent with nonperforming loans at the acquisition date, or (“non-PCI loans”). The following table represents the acquired loans as of date of acquisition and as of March 31, 2019: April 20, 2018 March 31, 2019 ABC Bank Acquired Loans PCI Non-PCI PCI Non-PCI Fair Value $ 11,360 $ 216,234 $ 10,984 $ 167,311 Contractually required principal and interest payments 19,447 220,308 18,046 169,002 Best estimate of contractual cash flows not expected to be collected 6,537 2,511 5,969 965 Best estimate of contractual cash flows expected to be collected 12,910 217,797 12,077 168,037

Securities

Securities	3 Months Ended
	Mar. 31, 2019
Securities
Securities	Note 3 – Securities Investment Portfolio Management Our investment portfolio serves the liquidity needs and income objectives of the Company. While the portfolio serves as an important component of the overall liquidity management at the Bank, portions of the portfolio also serve as income producing assets. The size and composition of the portfolio reflects liquidity needs, loan demand and interest income objectives. Portfolio size and composition will be adjusted from time to time. While a significant portion of the portfolio consists of readily marketable securities to address liquidity, other parts of the portfolio may reflect funds invested pending future loan demand or to maximize interest income without undue interest rate risk. Investments are comprised of debt securities and non-marketable equity investments. Securities available-for-sale are carried at fair value. Unrealized gains and losses, net of tax, on securities available-for-sale are reported as a separate component of equity. This balance sheet component changes as interest rates and market conditions change. Unrealized gains and losses are not included in the calculation of regulatory capital. FHLBC and FRBC stock are considered nonmarketable equity investments. FHLBC stock was recorded at $5.0 million at March 31, 2019, and $7.2 million at December 31, 2018. FRBC stock was recorded at $6.2 million at both March 31, 2019, and December 31, 2018. The following table summarizes the amortized cost and fair value of the securities portfolio at March 31, 2019, and December 31, 2018, and the corresponding amounts of gross unrealized gains and losses: Gross Gross Amortized Unrealized Unrealized Fair March 31, 2019 Cost Gains Losses Value Securities available-for-sale U.S. Treasuries $ 4,007 $ - $ (47) $ 3,960 U.S. government agencies 10,511 - (151) 10,360 U.S. government agencies mortgage-backed 15,278 182 (154) 15,306 States and political subdivisions 276,463 6,796 (2,087) 281,172 Collateralized mortgage obligations 65,354 182 (1,206) 64,330 Asset-backed securities 70,123 838 (150) 70,811 Collateralized loan obligations 63,808 79 (736) 63,151 Total securities available-for-sale $ 505,544 $ 8,077 $ (4,531) $ 509,090 Gross Gross Amortized Unrealized Unrealized Fair December 31, 2018 Cost Gains Losses Value Securities available-for-sale U.S. Treasury $ 4,006 $ - $ (83) $ 3,923 U.S. government agencies 11,112 - (161) 10,951 U.S. government agencies mortgage-backed 14,407 45 (377) 14,075 States and political subdivisions 277,112 1,916 (4,961) 274,067 Collateralized mortgage obligations 66,494 79 (2,144) 64,429 Asset-backed securities 108,574 1,165 (225) 109,514 Collateralized loan obligations 65,162 24 (897) 64,289 Total securities available-for-sale $ 546,867 $ 3,229 $ (8,848) $ 541,248 The fair value, amortized cost and weighted average yield of debt securities at March 31, 2019, by contractual maturity, were as follows in the table below. Securities not due at a single maturity date are shown separately. Weighted Amortized Average Fair Securities available-for-sale Cost Yield Value Due in one year or less $ 11,629 2.69 % $ 11,643 Due after one year through five years 6,814 2.53 6,818 Due after five years through ten years 6,189 3.50 6,410 Due after ten years 266,349 3.05 270,621 290,981 3.03 295,492 Mortgage-backed and collateralized mortgage obligations 80,632 3.26 79,636 Asset-backed securities 70,123 3.71 70,811 Collateralized loan obligations 63,808 4.96 63,151 Total securities available-for-sale $ 505,544 3.40 % $ 509,090 At March 31, 2019, the Company’s investments included $55.6 million of asset-backed securities that are backed by student loans originated under the Federal Family Education Loan program (“FFEL”). Under the FFEL, private lenders made federally guaranteed student loans to parents and students. While the program was modified several times before elimination in 2010, FFEL securities are generally guaranteed by the U.S Department of Education (“DOE”) at not less than 97% of the outstanding principal amount of the loans. The guarantee will reduce to 85% if the DOE receives reimbursement requests in excess of 5% of insured loans; reimbursement will drop to 75% if reimbursement requests exceed 9% of insured loans. In addition to the DOE guarantee, total added credit enhancement in the form of overcollateralization and/or subordination amounted to $11.7 million, or 12.44% of outstanding principal. The Company has invested in securities issued from three originators that individually amount to over 10% of the Company’s stockholders equity. Information regarding these three issuers and the value of the securities issued follows: March 31, 2019 Amortized Fair Issuer Cost Value GCO Education Loan Funding Corp $ 27,777 $ 27,731 Towd Point Mortgage Trust 34,118 33,679 Student Loan Marketing Association 25,824 26,153 Securities with unrealized losses at March 31, 2019, and December 31, 2018, aggregated by investment category and length of time that individual securities have been in a continuous unrealized loss position, were as follows (in thousands except for number of securities): Less than 12 months 12 months or more March 31, 2019 in an unrealized loss position in an unrealized loss position Total Number of Unrealized Fair Number of Unrealized Fair Number of Unrealized Fair Securities available-for-sale Securities Losses Value Securities Losses Value Securities Losses Value U.S. Treasuries - $ - $ - 1 $ 47 $ 3,960 1 $ 47 $ 3,960 U.S. government agencies - - - 4 151 10,360 4 151 10,360 U.S. government agencies mortgage-backed - - - 10 154 9,575 10 154 9,575 States and political subdivisions 4 1 808 9 2,086 41,500 13 2,087 42,308 Collateralized mortgage obligations - - - 11 1,206 53,431 11 1,206 53,431 Asset-backed securities 1 46 27,731 2 104 4,952 3 150 32,683 Collateralized loan obligations 4 159 28,324 4 577 24,837 8 736 53,161 Total securities available-for-sale 9 $ 206 $ 56,863 41 $ 4,325 $ 148,615 50 $ 4,531 $ 205,478 Less than 12 months 12 months or more December 31, 2018 in an unrealized loss position in an unrealized loss position Total Number of Unrealized Fair Number of Unrealized Fair Number of Unrealized Fair Securities available-for-sale Securities Losses Value Securities Losses Value Securities Losses Value U.S. Treasuries - $ - $ - 1 $ 83 $ 3,923 1 $ 83 $ 3,923 U.S. government agencies 3 100 7,385 1 61 3,566 4 161 10,951 U.S. government agencies mortgage-backed - - - 11 377 11,439 11 377 11,439 States and political subdivisions 4 126 17,713 33 4,835 110,326 37 4,961 128,039 Collateralized mortgage obligations 2 309 15,211 10 1,835 43,687 12 2,144 58,898 Asset-backed securities - - - 4 225 16,473 4 225 16,473 Collateralized loan obligations 7 721 46,547 1 176 7,824 8 897 54,371 Total securities available-for-sale 16 $ 1,256 $ 86,856 61 $ 7,592 $ 197,238 77 $ 8,848 $ 284,094 Recognition of other-than-temporary impairment was not necessary as of the three months ended March 31, 2019. The changes in fair value related primarily to interest rate fluctuations. Our review of other-than-temporary impairment determined that there was no credit quality deterioration. The following table presents net realized gains (losses) on securities available-for-sale for the three months ended March 31, 2019 and 2018. Three Months Ended March 31, Securities available-for-sale 2019 2018 Proceeds from sales of securities $ 81,524 $ 2,522 Gross realized gains on securities 605 35 Gross realized losses on securities (578) — Net realized gains $ 27 $ 35 Income tax expense on net realized gains (8) (10) Effective tax rate applied % % Securities valued at $321.8 million as of March 31, 2019, an increase from $318.4 million at year-end 2018, were pledged to secure deposits and borrowings, and for other purposes.

Loans

Loans	3 Months Ended
	Mar. 31, 2019
Loans
Loans	Note 4 – Loans Major classifications of loans were as follows: March 31, 2019 December 31, 2018 Commercial $ 324,450 $ 314,323 Leases 87,730 78,806 Real estate - commercial 835,904 820,941 Real estate - construction 94,787 108,390 Real estate - residential 399,866 407,068 HELOC 133,859 140,442 Other 1 14,018 14,439 Total loans, excluding deferred loan costs and PCI loans 1,890,614 1,884,409 Net deferred loan costs 1,681 1,653 Total loans, excluding PCI loans 1,892,295 1,886,062 PCI loans, net of purchase accounting adjustments 10,851 10,965 Total loans $ 1,903,146 $ 1,897,027 1 The “Other” class includes consumer and overdrafts. It is the policy of the Company to review each prospective credit prior to making a loan in order to determine if an adequate level of security or collateral has been obtained. The type of collateral, when required, will vary from liquid assets to real estate. The Company’s access to collateral, in the event of borrower default, is assured through adherence to lending laws, the Company’s lending standards and credit monitoring procedures. With selected exceptions, the Bank makes loans solely within its market area. There are no significant concentrations of loans where the customers’ ability to honor loan terms is dependent upon a single economic sector, although the real estate related categories listed above represent 76.9% and 77.9% of the portfolio at March 31, 2019, and December 31, 2018, respectively. Aged analysis of past due loans by class of loans was as follows: Recorded Investment 90 days or 90 Days or Greater Past 30-59 Days 60-89 Days Greater Past Total Past Due and March 31, 2019 Past Due Past Due Due Due Current Nonaccrual Total Loans Accruing Commercial $ 10 $ - $ - $ 10 $ 324,440 $ - $ 324,450 $ - Leases 110 - - 110 87,506 114 87,730 - Real estate - commercial Owner occupied general purpose 349 90 - 439 155,821 1,732 157,992 - Owner occupied special purpose 599 2,021 - 2,620 188,132 516 191,268 - Non-owner occupied general purpose 775 378 - 1,153 317,566 3,486 322,205 - Non-owner occupied special purpose - - - - 97,074 2,960 100,034 - Retail properties 1,159 - - 1,159 49,441 - 50,600 - Farm - - - - 13,805 - 13,805 - Real estate - construction Homebuilder - - - - 4,456 - 4,456 - Land - - - - 2,686 - 2,686 - Commercial speculative - 350 - 350 54,503 - 54,853 - All other - - - - 32,689 103 32,792 - Real estate - residential Investor 803 - - 803 68,650 337 69,790 - Multi-family - - - - 190,478 - 190,478 - Owner occupied 282 10 - 292 136,177 3,129 139,598 - HELOC 211 359 1 571 132,310 978 133,859 1 Other 1 8 30 3 41 15,630 28 15,699 3 Total, excluding PCI loans $ 4,306 $ 3,238 $ 4 $ 7,548 $ 1,871,364 $ 13,383 $ 1,892,295 $ 4 PCI loans, net of purchase accounting adjustments 1,872 - - 1,872 6,746 2,233 10,851 - Total $ 6,178 $ 3,238 $ 4 $ 9,420 $ 1,878,110 $ 15,616 $ 1,903,146 $ 4 Recorded Investment 90 days or 90 Days or Greater Past 30-59 Days 60-89 Days Greater Past Total Past Due and December 31, 2018 Past Due Past Due Due Due Current Nonaccrual Total Loans Accruing Commercial $ 58 $ - $ 352 $ 410 $ 313,913 $ - $ 314,323 $ 361 Leases - - - - 78,806 - 78,806 - Real estate - commercial Owner occupied general purpose 1,768 - 33 1,801 160,892 1,579 164,272 36 Owner occupied special purpose 826 135 - 961 192,426 395 193,782 - Non-owner occupied general purpose 2,832 203 - 3,035 286,115 4,236 293,386 - Non-owner occupied special purpose - - - - 106,036 3,099 109,135 - Retail properties - 620 - 620 45,968 - 46,588 - Farm - - - - 13,778 - 13,778 - Real estate - construction Homebuilder - - - - 5,102 - 5,102 - Land 266 - - 266 2,478 - 2,744 - Commercial speculative - - 350 350 55,060 - 55,410 355 All other - - - - 45,028 106 45,134 - Real estate - residential Investor 801 156 - 957 69,148 353 70,458 - Multi-family 545 - 179 724 195,504 - 196,228 180 Owner occupied 1,241 705 - 1,946 135,360 3,076 140,382 - HELOC 775 - - 775 138,801 866 140,442 - Other 1 53 5 3 61 16,000 31 16,092 3 Total, excluding PCI loans $ 9,165 $ 1,824 $ 917 $ 11,906 $ 1,860,415 $ 13,741 $ 1,886,062 $ 935 PCI loans, net of purchase accounting adjustments 1,452 - - 1,452 7,248 2,265 10,965 - Total $ 10,617 $ 1,824 $ 917 $ 13,358 $ 1,867,663 $ 16,006 $ 1,897,027 $ 935 1 The “Other” class includes consumer, overdrafts and net deferred costs. Credit Quality Indicators The Company categorizes loans into credit risk categories based on current financial information, overall debt service coverage, comparison to industry averages, historical payment experience, and current economic trends. This analysis includes loans with outstanding balances or commitments greater than $50,000 and excludes homogeneous loans such as home equity lines of credit and residential mortgages. Loans with a classified risk rating are reviewed quarterly regardless of size or loan type. The Company uses the following definitions for classified risk ratings: Special Mention. Loans classified as special mention have a potential weakness that deserves management’s close attention. If left uncorrected, these potential weaknesses may result in deterioration of the repayment prospects for the loan at some future date. Substandard. Loans classified as substandard are inadequately protected by the current net worth and paying capacity of the obligor or of the collateral pledged, if any. Loans so classified have a well-defined weakness or weaknesses that jeopardize the liquidation of the debt. They are characterized by the distinct possibility that the Bank will sustain some loss if the deficiencies are not corrected. The substandard credit quality indicator includes both potential problem loans that are currently performing and nonperforming loans. Doubtful. Loans classified as doubtful have all the weaknesses inherent in those classified as substandard, with the added characteristic that the weaknesses make collection or liquidation in full, on the basis of currently existing facts, conditions, and values, highly questionable and improbable. Credits that are not covered by the definitions above are pass credits, which are not considered to be adversely rated. Credit Quality Indicators by class of loans were as follows: March 31, 2019 Special Pass Mention Substandard Doubtful Total Commercial $ 316,162 $ 1,213 $ 7,075 $ - $ 324,450 Leases 87,616 - 114 - 87,730 Real estate - commercial Owner occupied general purpose 152,313 1,364 4,315 - 157,992 Owner occupied special purpose 183,197 2,055 6,016 - 191,268 Non-owner occupied general purpose 314,375 201 7,629 - 322,205 Non-owner occupied special purpose 95,578 1,496 2,960 - 100,034 Retail Properties 48,833 608 1,159 - 50,600 Farm 11,365 1,218 1,222 - 13,805 Real estate - construction Homebuilder 4,456 - - - 4,456 Land 2,686 - - - 2,686 Commercial speculative 54,853 - - - 54,853 All other 30,203 - 2,589 - 32,792 Real estate - residential Investor 68,799 - 991 - 69,790 Multi-Family 189,673 318 487 - 190,478 Owner occupied 134,735 135 4,728 - 139,598 HELOC 131,880 13 1,966 - 133,859 Other 1 15,671 - 28 - 15,699 Total, excluding PCI loans $ 1,842,395 $ 8,621 $ 41,279 $ - $ 1,892,295 PCI loans, net of purchase accounting adjustments 815 2,893 7,143 - 10,851 Total $ 1,843,210 $ 11,514 $ 48,422 $ - $ 1,903,146 December 31, 2018 Special Pass Mention Substandard 2 Doubtful Total Commercial $ 305,993 $ 8,193 $ 137 $ - $ 314,323 Leases 78,806 - - - 78,806 Real estate - commercial Owner occupied general purpose 157,334 1,660 5,278 - 164,272 Owner occupied special purpose 186,218 3,429 4,135 - 193,782 Non-owner occupied general purpose 284,818 202 8,366 - 293,386 Non-owner occupied special purpose 104,526 1,510 3,099 - 109,135 Retail Properties 44,805 - 1,783 - 46,588 Farm 11,307 1,249 1,222 - 13,778 Real estate - construction Homebuilder 5,102 - - - 5,102 Land 2,744 - - - 2,744 Commercial speculative 55,410 - - - 55,410 All other 42,524 - 2,610 - 45,134 Real estate - residential Investor 69,242 - 1,216 - 70,458 Multi-Family 195,249 - 979 - 196,228 Owner occupied 135,858 - 4,524 - 140,382 HELOC 138,553 - 1,889 - 140,442 Other 1 16,061 - 31 - 16,092 Total, excluding PCI loans $ 1,834,550 $ 16,243 $ 35,269 $ - $ 1,886,062 PCI loans, net of purchase accounting adjustments 907 2,906 7,152 - 10,965 Total $ 1,835,457 $ 19,149 $ 42,421 $ - $ 1,897,027 1 The “Other” class includes consumer, overdrafts and net deferred costs. The Company had $443,000 and $448,000 in residential real estate loans in the process of foreclosure as of March 31, 2019, and December 31, 2018, respectively. The following tables set forth the recorded investments, unpaid principal balance and related allowance, excluding purchased credit-impaired loans, by class of loans as of March 31, 2019 and for the three months then ended: Three Months Ended As of March 31, 2019 March 31, 2019 Unpaid Average Interest Recorded Principal Related Recorded Income Investment Balance Allowance Investment Recognized With no related allowance recorded Commercial $ - $ - $ - $ - $ - Leases 114 154 - 57 - Commercial real estate Owner occupied general purpose 1,810 2,015 - 1,735 1 Owner occupied special purpose 516 661 - 455 - Non-owner occupied general purpose 576 589 - 857 - Non-owner occupied special purpose 2,960 3,575 - 1,480 - Retail properties - - - - - Farm - - - - - Construction Homebuilder - - - - - Land - - - - - Commercial speculative - - - - - All other 103 131 - 76 - Residential Investor 337 450 - 345 - Multi-Family - - - - - Owner occupied 3,611 5,192 - 3,485 10 HELOC 961 1,087 - 923 - Other 1 5 6 - 6 - Total impaired loans with no recorded allowance 10,993 13,860 - 9,419 11 With an allowance recorded Commercial - - - - - Leases - - - - - Commercial real estate Owner occupied general purpose 174 174 72 285 6 Owner occupied special purpose - - - - - Non-owner occupied general purpose 2,968 3,951 21 3,033 2 Non-owner occupied special purpose - - - 1,549 - Retail properties - - - - - Farm - - - - - Construction Homebuilder - - - - - Land - - - - - Commercial speculative - - - - - All other - - - 29 - Residential Investor 802 802 4 805 11 Multi-Family - - - - - Owner occupied 3,440 3,440 42 3,558 41 HELOC 1,423 1,423 71 1,390 20 Other 1 23 24 12 23 - Total impaired loans with a recorded allowance 8,830 9,814 222 10,672 80 Total impaired loans $ 19,823 $ 23,674 $ 222 $ 20,091 $ 91 1 The “Other” class includes consumer, overdrafts and net deferred costs. Impaired loans by class of loans as of December 31, 2018, and for the three months ended March 31, 2018, were as follows: Three Months Ended As of December 31, 2018 March 31, 2018 Unpaid Average Interest Recorded Principal Related Recorded Income Investment Balance Allowance Investment Recognized With no related allowance recorded Commercial $ - $ - $ - $ - $ - Leases - - - 89 - Commercial real estate Owner occupied general purpose 1,659 1,782 - 417 - Owner occupied special purpose 395 530 - 391 - Non-owner occupied general purpose 1,138 1,159 - 602 - Non-owner occupied special purpose - - - - - Retail properties - - - 541 - Farm - - - - - Construction Homebuilder - - - - - Land - - - - - Commercial speculative - - - - - All other 49 73 - 199 - Residential Investor 353 459 - 366 - Multi-Family - - - 2,362 - Owner occupied 3,359 4,882 - 5,178 9 HELOC 884 1,003 - 1,125 - Other 1 7 7 - 12 - Total impaired loans with no recorded allowance 7,844 9,895 - 11,282 9 With an allowance recorded Commercial - - - - - Leases - - - - - Commercial real estate Owner occupied general purpose 396 396 3 152 - Owner occupied special purpose - - - - - Non-owner occupied general purpose 3,098 4,038 97 - - Non-owner occupied special purpose 3,099 3,575 139 1,788 - Retail properties - - - - - Farm - - - - - Construction Homebuilder - - - - - Land - - - - - Commercial speculative - - - - - All other 57 58 1 - - Residential Investor 808 808 4 826 11 Multi-Family - - - - - Owner occupied 3,676 3,679 46 3,559 37 HELOC 1,357 1,357 49 1,064 11 Other 1 24 25 13 - - Total impaired loans with a recorded allowance 12,515 13,936 352 7,389 59 Total impaired loans $ 20,359 $ 23,831 $ 352 $ 18,671 $ 68 1 The “Other” class includes consumer, overdrafts and net deferred costs. Troubled debt restructurings (“TDRs”) are loans for which the contractual terms have been modified and both of these conditions exist: (1) there is a concession to the borrower and (2) the borrower is experiencing financial difficulties. Loans are restructured on a case-by-case basis during the loan collection process with modifications generally initiated at the request of the borrower. These modifications may include reduction in interest rates, extension of term, deferrals of principal, and other modifications. The Bank participates in the U.S. Department of the Treasury’s (the “Treasury”) Home Affordable Modification Program (“HAMP”) which gives qualifying homeowners an opportunity to refinance into more affordable monthly payments. The specific allocation of the allowance for loan and lease losses for TDRs is determined by calculating the present value of the TDR cash flows by discounting the original payment less an assumption for probability of default at the original note’s issue rate, and adding this amount to the present value of collateral less selling costs. If the resulting amount is less than the recorded book value, the Bank either establishes a valuation allowance (i.e., specific reserve) as a component of the allowance for loan and lease losses or charges off the impaired balance if it determines that such amount is a confirmed loss. This method is used consistently for all segments of the portfolio. The allowance for loan and lease losses also includes an allowance based on a loss migration analysis for each loan category on loans and leases that are not individually evaluated for specific impairment. All loans charged-off, including TDRs charged-off, are factored into this calculation by portfolio segment. TDRs that were modified during the period are as follows: TDR Modifications Three Months Ended March 31, 2019 # of Pre-modification Post-modification contracts recorded investment recorded investment Troubled debt restructurings Real estate - commercial Investor occupied general purpose Other 1 1 $ 58 $ 58 Real estate - residential Owner occupied HAMP 2 1 105 9 HELOC HAMP 2 1 39 34 Other 1 1 39 38 Total 4 $ 241 $ 139 TDR Modifications Three Months Ended March 31, 2018 # of Pre-modification Post-modification contracts recorded investment recorded investment Troubled debt restructurings Real estate - residential Investor Deferral 3 1 $ 165 $ 74 HELOC Rate 4 1 24 24 Other 1 4 218 217 Total 6 $ 407 $ 315 1 Other: Change of terms from bankruptcy court. 2 HAMP: Home Affordable Modification Program. 3 Deferral: Refers to the deferral of principal. 4 Rate: Refers to interest rate reduction. TDRs are classified as being in default on a case-by-case basis when they fail to be in compliance with the modified terms. There was no TDR default activity for the periods ended March 31, 2019, and March 31, 2018, for loans that were restructured within the 12 month period prior to default. The following table details the accretable discount on all of the Company’s purchased loans, both non-PCI loans and PCI loans as of March 31, 2019. The Company’s PCI loans were recorded commensurate with the second quarter 2018 acquisition of ABC Bank; no PCI loans were held prior to that time. Non-PCI loan activity during the first quarter of 2018 stemmed from the Company’s acquisition of the Chicago branch of Talmer Bank and Trust in late 2016. The accretable discount recorded in the first quarter of 2018 totaled $148,000; the balance of the non-PCI loan discount was $694,000 as of March 31, 2018. Accretable Discount- Non-PCI Loans Accretable Discount- PCI Loans Non-Accretable Discount-PCI Loans Total Beginning balance, January 1, 2019 $ 1,867 $ 1,099 $ 5,969 $ 8,935 Purchases - - - - Accretion (365) (14) - (379) Ending balance, March 31, 2019 $ 1,502 $ 1,085 $ 5,969 $ 8,556

Allowance for Loan Losses

Allowance for Loan Losses	3 Months Ended
	Mar. 31, 2019
Allowance for Loan Losses
Allowance for Loan Losses	Note 5 – Allowance for Loan and Lease Losses Changes in the allowance for loan and lease losses by segment of loans based on method of impairment for the three months ended March 31, 2019, were as follows: Real Estate Real Estate Real Estate Allowance for loan and lease losses: Commercial Leases Commercial Construction Residential HELOC Other 1 Total Beginning balance $ 2,832 $ 734 $ 10,470 $ 969 $ 1,931 $ 1,449 $ 621 $ 19,006 Charge-offs 12 - 231 - 18 - 84 345 Recoveries 30 - 23 (1) 50 46 57 205 Provision (Release) 202 71 (242) (168) (7) (170) 764 450 Ending balance $ 3,052 $ 805 $ 10,020 $ 800 $ 1,956 $ 1,325 $ 1,358 $ 19,316 Ending balance: Individually evaluated for impairment $ - $ - $ 93 $ - $ 46 $ 71 $ 12 $ 222 Ending balance: Collectively evaluated for impairment 3,052 805 9,927 800 1,910 1,254 1,346 19,094 Ending balance: Acquired and accounted for ASC 310-30 - - - - - - - - Total ending allowance balance $ 3,052 $ 805 $ 10,020 $ 800 $ 1,956 $ 1,325 $ 1,358 $ 19,316 Loans: Ending balance: Individually evaluated for Impairment $ - $ 114 $ 9,004 $ 103 $ 8,190 $ 2,384 $ 28 $ 19,823 Ending balance: Collectively evaluated for impairment 324,450 87,616 826,900 94,684 391,676 131,475 15,671 1,872,472 Ending balance: Acquired and accounted for ASC 310-30 - - 4,102 710 6,039 - - 10,851 Total ending loans balance $ 324,450 $ 87,730 $ 840,006 $ 95,497 $ 405,905 $ 133,859 $ 15,699 $ 1,903,146 1 The “Other” class includes consumer, overdrafts and net deferred costs. Changes in the allowance for loan and lease losses by segment of loans based on method of impairment for three months ended March 31, 2018, were as follows: Real Estate Real Estate Real Estate Allowance for loan and lease losses: Commercial Leases Commercial Construction Residential HELOC Other 1 Total Beginning balance $ 2,453 $ 692 $ 9,522 $ 923 $ 1,846 $ 1,446 $ 579 $ 17,461 Charge-offs 16 5 (96) (16) (60) 27 99 (25) Recoveries 17 - 367 3 911 47 79 1,424 Provision (Release) 150 (70) (420) 201 (963) 69 311 (722) Ending balance $ 2,604 $ 617 $ 9,565 $ 1,143 $ 1,854 $ 1,535 $ 870 $ 18,188 Ending balance: Individually evaluated for impairment $ - $ - $ 503 $ - $ 85 $ - $ - $ 588 Ending balance: Collectively evaluated for impairment 2,604 617 9,062 1,143 1,769 1,535 870 17,600 Total ending allowance balance $ 2,604 $ 617 $ 9,565 $ 1,143 $ 1,854 $ 1,535 $ 870 $ 18,188 Loans: Ending balance: Individually evaluated for impairment $ - $ - $ 4,740 $ 197 $ 10,008 $ 2,268 $ 17 $ 17,230 Ending balance: Collectively evaluated for impairment 281,134 66,344 708,682 91,282 299,368 126,966 10,806 1,584,582 Total ending loan balance $ 281,134 $ 66,344 $ 713,422 $ 91,479 $ 309,376 $ 129,234 $ 10,823 $ 1,601,812

Other Real Estate Owned

Other Real Estate Owned	3 Months Ended
	Mar. 31, 2019
Other Real Estate Owned
Other Real Estate Owned	Note 6 – Other Real Estate Owned Details related to the activity in the other real estate owned (“OREO”) portfolio, net of valuation reserve, for the periods presented are itemized in the following table: Three Months Ended March 31, Other real estate owned 2019 2018 Balance at beginning of period $ 7,175 $ 8,371 Property additions, net of acquisition adjustments - - Property improvements - 59 Less: Proceeds from property disposals, net of participation purchase and of gains/losses 801 1,255 Period valuation adjustments - 112 Other adjustments 9 - Balance at end of period $ 6,365 $ 7,063 Activity in the valuation allowance was as follows: Three Months Ended March 31, 2019 2018 Balance at beginning of period $ 8,027 $ 8,208 Provision for unrealized losses - 112 Reductions taken on sales (152) (221) Balance at end of period $ 7,875 $ 8,099 Expenses related to OREO, net of lease revenue includes: Three Months Ended March 31, 2019 2018 Gain on sales, net $ (73) $ (80) Provision for unrealized losses - 112 Operating expenses 128 156 Less: Lease revenue 5 15 Net OREO expense $ 50 $ 173

Deposits

Deposits	3 Months Ended
	Mar. 31, 2019
Deposits
Deposits	Note 7 – Deposits Major classifications of deposits were as follows: March 31, 2019 December 31, 2018 Noninterest bearing demand $ 629,909 $ 618,830 Savings 314,029 304,400 NOW accounts 449,288 425,878 Money market accounts 297,899 310,390 Certificates of deposit of less than $100,000 224,899 230,781 Certificates of deposit of $100,000 through $250,000 145,397 159,953 Certificates of deposit of more than $250,000 62,091 66,441 Total deposits $ 2,123,512 $ 2,116,673

Borrowings

Borrowings	3 Months Ended
	Mar. 31, 2019
Borrowings
Borrowings	Note 8 – Borrowings The following table is a summary of borrowings as of March 31, 2019, and December 31, 2018. Junior subordinated debentures are discussed in detail in Note 9: March 31, 2019 December 31, 2018 Securities sold under repurchase agreements $ 42,361 $ 46,632 Other short-term borrowings 1 85,000 149,500 Junior subordinated debentures 57,698 57,686 Senior notes 44,183 44,158 Notes payable and other borrowings 13,207 15,379 Total borrowings $ 242,449 $ 313,355 1 Includes short-term FHLBC advances for both periods presented as well as the outstanding portion of an operating line of credit as of December 31, 2018, which totaled $4 million. The Company enters into deposit sweep transactions where the transaction amounts are secured by pledged securities. These transactions consistently mature overnight from the transaction date and are governed by sweep repurchase agreements. All sweep repurchase agreements are treated as financings secured by U.S. government agencies and collateralized mortgage-backed securities and had a carrying amount of $42.4 million at March 31, 2019, and $46.6 million at December 31, 2018. The fair value of the pledged collateral was $75.8 million at March 31, 2019 and $72.8 million at December 31, 2018. At March 31, 2019, there were no customers with secured balances exceeding 10% of stockholders’ equity. The Company’s borrowings at the FHLBC require the Bank to be a member and invest in the stock of the FHLBC. Total borrowings are generally limited to the lower of 35% of total assets or 60% of the book value of certain mortgage loans. As of March 31, 2019, the Bank had $85.0 million in short-term advances outstanding under the FHLBC compared to $145.5 million outstanding as of December 31, 2018; $70.0 million of the March 31, 2019, balance was issued at 2.54%, and the remaining $15.0 million was issued at rates ranging from 1.60% to 2.56%. The additional $4.0 million in other short-term borrowings as of December 31, 2018, was the outstanding portion of a $20.0 million line of credit the Company has with a correspondent bank for short-term funding needs; advances under the line can be outstanding up to 360 days from the date of issuance. This line of credit was repaid with operating cash on hand in late January 2019. The Bank also assumed $23.4 million of long-term FHLBC advances with the ABC Bank acquisition. At March 31, 2019, these advances have a total outstanding balance of $13.2 million and are scheduled to mature over the next seven years with interest rates ranging between 1.60% and 2.83%. FHLBC stock held at March 31, 2019, was valued at $5.0 million, and any potential FHLBC advances were collateralized by securities with a fair value of $78.2 million and loans with a principal balance of $758.7 million, which carried a FHLBC calculated combined collateral value of $577.7 million. The Company had excess collateral of $405.1 million available to secure borrowings at March 31, 2019. The increase of 482.1% since December 2018 is due to the completion of an analysis of FHLB loan collateral eligibility in the first quarter of 2019, which expanded the capacity of funding at the FHLB as additional loan collateral was deemed acceptable. The Company also has $44.2 million of senior notes outstanding, net of deferred issuance costs, as of March 31, 2019 and December 31, 2018. The senior notes were issued in December 2016 with a ten years maturity, and terms include interest payable semiannually at 5.75% for five years. Beginning December 2021, the senior debt will pay interest at a floating rate, with interest payable quarterly at three month LIBOR plus 385 basis points. The notes are redeemable, in whole or in part, at the option of the Company, beginning with the interest payment date on December 31, 2021, and on any floating rate interest payment date thereafter, at a redemption price equal to 100% of the principal amount of the notes plus accrued and unpaid interest. As of March 31, 2019 and December 31, 2018, unamortized debt issuance costs related to the senior notes were $817,000 and $842,000, respectively, and are included as a reduction of the balance of the senior notes on the Consolidated Balance Sheet. These deferred issuance costs will be amortized to interest expense over the ten year term of the notes and are included in the Consolidated Statements of Income.

Junior Subordinated Debentures

Junior Subordinated Debentures	3 Months Ended
	Mar. 31, 2019
Junior Subordinated Debentures.
Junior Subordinated Debentures	Note 9 – Junior Subordinated Debentures The Company completed the sale of $27.5 million of cumulative trust preferred securities by its unconsolidated subsidiary, Old Second Capital Trust I, in June 2003. An additional $4.1 million of cumulative trust preferred securities were sold in July 2003. The trust preferred securities may remain outstanding for a 30-year term but, subject to regulatory approval, can be called in whole or in part by the Company after June 30, 2008. Distributions on the securities are payable quarterly at an annual rate of 7.80%, unless the Company elects to defer such interest payments as permitted by the terms of the securities. The Company issued a new $32.6 million subordinated debenture to Old Second Capital Trust I in return for the aggregate net proceeds of this trust preferred offering. The interest rate and payment frequency on the debenture are equivalent to the cash distribution basis on the trust preferred securities. The Company issued an additional $25.0 million of cumulative trust preferred securities through a private placement completed by an additional, unconsolidated subsidiary, Old Second Capital Trust II, in April 2007. These trust preferred securities also mature in 30 years, but subject to the aforementioned regulatory approval, can be called in whole or in part on a quarterly basis commencing June 15, 2017. The quarterly cash distributions on the securities were fixed at 6.77% through June 15, 2017, and float at 150 basis points over three-month LIBOR thereafter. Upon conversion to a floating rate, a cash flow hedge was initiated which resulted in the total interest rate paid on the debt of 4.39% as of March 31, 2019, compared to the rate paid prior to June 15, 2017 of 6.77%. The Company issued a new $25.8 million subordinated debenture to Old Second Capital Trust II in return for the aggregate net proceeds of this trust preferred offering. The interest rate and payment frequency on the debenture are equivalent to the cash distribution basis on the trust preferred securities. Both of the debentures issued by the Company are disclosed on the Consolidated Balance Sheet as junior subordinated debentures and the related interest expense for each issuance is included in the Consolidated Statements of Income. As of March 31, 2019, and December 31, 2018, unamortized debt issuance costs related to the junior subordinated debentures were $680,000 and $692,000 respectively, and are included as a reduction to the balance of the junior subordinated debentures on the Consolidated Balance Sheet. These deferred issuance costs will be amortized to interest expense over the 30-year term of the notes and are included in the Consolidated Statements of Income.

Equity Compensation Plans

Equity Compensation Plans	3 Months Ended
	Mar. 31, 2019
Equity Compensation Plans
Equity Compensation Plans	Note 10 – Equity Compensation Plans Stock-based awards are outstanding under the Company’s 2008 Equity Incentive Plan (the “2008 Plan”) and the Company’s 2014 Equity Incentive Plan, as amended (the “2014 Plan,” and together with the 2008 Plan, the “Plans”). The 2014 Plan was approved at the 2014 annual meeting of stockholders; a maximum of 375,000 shares were authorized to be issued under this plan. Following approval of the 2014 Plan, no further awards will be granted under the 2008 Plan or any other Company equity compensation plan. At the May 2016 annual stockholders meeting, an amendment to the 2014 Plan authorized an additional 600,000 shares to be issued, which resulted in a total of 975,000 shares authorized for issuance under this plan. The 2014 Plan authorizes the granting of qualified stock options, non-qualified stock options, restricted stock, restricted stock units, and stock appreciation rights. Awards may be granted to selected directors and officers or employees under the 2014 Plan at the discretion of the Compensation Committee of the Company’s Board of Directors. As of March 31, 2019, 169,791 shares remained available for issuance under the 2014 Plan. There were 4,500 stock options exercised in the three months ended March 31, 2019, and no stock options granted or exercised in the three months ended March 31, 2018. All stock options are granted for a term of ten years. There is no unrecognized compensation cost related to unvested stock options as all stock options of the Company’s common stock have fully vested. A summary of stock option activity in the Plans for the three months ended March 31, 2019, is as follows: Weighted- Weighted Average Average Remaining Exercise Contractual Aggregate Shares per Price Term (years) Intrinsic Value Beginning outstanding 4,500 $ 7.49 0.1 $ 25 Canceled - - - - Exercised (4,500) 7.49 - (27) Expired - - - - Ending outstanding - $ - - $ - Exercisable at end of period - $ - - $ - Generally, restricted stock and restricted stock units granted under the Plans vest three years from the grant date, but the Compensation Committee of the Company’s Board of Directors has discretionary authority to change some terms including the amount of time until the vest date. Awards under the 2008 Plan will become fully vested upon a merger or change in control of the Company. Under the 2014 Plan, unless otherwise provided in the award agreement, upon a change in control of the Company, all stock options and stock appreciation rights will become fully exercisable, and all stock awards and cash incentive awards under the 2014 Plan shall become fully earned and vested immediately, if (i) the 2014 Plan and the respective award agreement is not an obligation of the successor entity following the change in control, or (ii) the 2014 Plan and the respective award agreement is an obligation of the successor entity following the change in control and the participant incurs a qualifying termination (generally termination without cause by the Company or termination by the employee for good reason). In the event of a change in control, performance-based awards generally will be fixed at the target performance level. The Company granted restricted stock under its equity compensation plans beginning in 2005 and it began granting restricted stock units in February 2009. Awards of restricted stock under the Plans generally entitle holders to voting and dividend rights upon grant and are subject to forfeiture until certain restrictions have lapsed including employment for a specific period. Awards of restricted stock units under the Plans are also subject to forfeiture until certain restrictions have lapsed including employment for a specific period, but do not entitle holders to voting rights until the restricted period ends and shares are transferred in connection with the units. There were no restricted stock units issued under the 2014 Plan during the three months ended March 31, 2019. There were 114,281 restricted stock units issued during the three months ended March 31, 2018. Compensation expense is recognized over the vesting period of the restricted stock unit based on the market value of the award on the issue date. Total compensation cost that has been recorded for the 2014 Plan was $578,000 and $401,000 in the first three months of 2019 and 2018, respectively. A summary of changes in the Company’s unvested restricted awards for the three months ended March 31, 2019, is as follows: March 31, 2019 Weighted Restricted Average Stock Shares Grant Date and Units Fair Value Unvested at January 1 552,281 $ 11.31 Granted - - Vested (111,437) 7.34 Forfeited - - Unvested at March 31 440,844 $ 12.31 Total unrecognized compensation cost of restricted awards was $2.5 million as of March 31, 2019, which is expected to be recognized over a weighted-average period of 1.84 years.

Earnings Per Share

Earnings Per Share	3 Months Ended
	Mar. 31, 2019
Earnings Per Share
Earnings Per Share	Note 11 – Earnings Per Share The earnings per share – both basic and diluted – are included below as of March 31: Three Months Ended March 31, 2019 2018 Basic earnings per share: Weighted-average common shares outstanding 29,845,653 29,659,454 Net income $ 8,468 $ 9,489 Basic earnings per share $ 0.28 $ 0.32 Diluted earnings per share: Weighted-average common shares outstanding 29,845,653 29,659,454 Dilutive effect of unvested restricted awards 497,978 472,936 Dilutive effect of stock options and warrants - 36,358 Diluted average common shares outstanding 30,343,631 30,168,748 Net Income $ 8,468 $ 9,489 Diluted earnings per share $ 0.28 $ 0.31 The above 2018 earnings per share calculation also includes a warrant for 815,339 shares of common stock, at an exercise price of $13.43 per share, that was outstanding as of March 31, 2018, and is considered dilutive. The ten-year warrant was issued in 2009, and was sold at auction by the U.S. Treasury in June 2013 to a third party investor. This warrant was not included as a dilutive factor as of March 31, 2019, due to its cashless exercise on January 16, 2019. As of the date of exercise, the Company’s closing market stock price was $14.23 per share, resulting in 45,836 shares being issued. The cashless warrant exercise resulted in a net $313,000 reduction to treasury stock as these shares were issued from stock held by the Company.

Regulatory & Capital Matters

Regulatory & Capital Matters	3 Months Ended
	Mar. 31, 2019
Regulatory & Capital Matters
Regulatory & Capital Matters	Note 12 – Regulatory & Capital Matters The Bank is subject to the risk-based capital regulatory guidelines, which include the methodology for calculating the risk-weighted Bank assets, developed by the Office of the Comptroller of the Currency (the “OCC”) and the other bank regulatory agencies. In connection with the current risk-based capital regulatory guidelines, the Bank’s Board of Directors has established an internal guideline requiring the Bank to maintain a Tier 1 leverage capital ratio at or above eight percent (8%) and a total risk-based capital ratio at or above twelve percent (12%). At March 31, 2019, the Bank exceeded those thresholds. At March 31, 2019, the Bank’s Tier 1 capital leverage ratio was 11.54%, an increase of 18 basis points from December 31, 2018, and is well above the 8.00% objective. The Bank’s total capital ratio was 14.47%, an increase of 33 basis points from December 31, 2018, and also well above the objective of 12.00%. Bank holding companies are required to maintain minimum levels of capital in accordance with capital guidelines implemented by the Board of Governors of the Federal Reserve System. The general bank and holding company capital adequacy guidelines are shown in the accompanying table, as are the capital ratios of the Company and the Bank, as of March 31, 2019, and December 31, 2018. In July 2013, the U.S. federal banking authorities issued final rules (the “Basel III Rules”) establishing more stringent regulatory capital requirements for U.S. banking institutions, which went into effect on January 1, 2015. A detailed discussion of the Basel III Rules is included in Part I, Item 1 of the Company’s Form 10-K for the year ended December 31, 2018, under the heading “Supervision and Regulation.” At March 31, 2019, and December 31, 2018, the Company, on a consolidated basis, exceeded the minimum thresholds to be considered “well capitalized” under current regulatory defined capital ratios. Capital levels and industry defined regulatory minimum required levels are as follows: Minimum Capital To Be Well Capitalized Under Adequacy with Capital Prompt Corrective Actual Conservation Buffer if applicable 1 Action Provisions 2 Amount Ratio Amount Ratio Amount Ratio March 31, 2019 Common equity tier 1 capital to risk weighted assets Consolidated $ 216,215 9.75 % $ 155,231 7.000 % N/A N/A Old Second Bank 300,290 13.60 154,561 7.000 $ 143,521 6.50 % Total capital to risk weighted assets Consolidated 292,151 13.17 232,922 10.500 N/A N/A Old Second Bank 319,601 14.47 231,915 10.500 220,871 10.00 Tier 1 capital to risk weighted assets Consolidated 272,840 12.30 188,548 8.500 N/A N/A Old Second Bank 300,290 13.60 187,681 8.500 176,641 8.00 Tier 1 capital to average assets Consolidated 272,840 10.44 104,536 4.00 N/A N/A Old Second Bank 300,290 11.54 104,087 4.00 130,108 5.00 December 31, 2018 Common equity tier 1 capital to risk weighted assets Consolidated $ 207,597 9.29 % $ 142,444 6.375 % N/A N/A Old Second Bank 295,599 13.29 141,791 6.375 $ 144,571 6.50 % Total capital to risk weighted assets Consolidated 282,126 12.63 220,648 9.875 N/A N/A Old Second Bank 314,600 14.14 219,637 9.875 222,417 10.00 Tier 1 capital to risk weighted assets Consolidated 263,125 11.78 175,960 7.875 N/A N/A Old Second Bank 295,599 13.29 175,153 7.875 177,934 8.00 Tier 1 capital to average assets Consolidated 263,125 10.08 104,415 4.00 N/A N/A Old Second Bank 295,599 11.36 104,084 4.00 130,105 5.00 1 As of March 31, 2019, amounts are shown inclusive of a capital conservation buffer of 2.50%; as compared to December 31, 2018, of 1.875%. 2 The Bank exceeded the general minimum regulatory requirements to be considered “well capitalized.” Dividend Restrictions In addition to the above requirements, banking regulations and capital guidelines generally limit the amount of dividends that may be paid by a bank without prior regulatory approval. Under these regulations, the amount of dividends that may be paid in any calendar year is limited to the current year’s profits, combined with the retained profit of the previous two years, subject to the capital requirements described above. Pursuant to the Basel III rules that came into effect January 1, 2015, the Bank must keep a buffer of 0.625% for 2016, 1.25% for 2017, 1.875% for 2018, and 2.50% for 2019 and thereafter of minimum capital requirements in order to avoid additional limitations on capital distributions and certain other payments.

Fair Value Measurements

Fair Value Measurements	3 Months Ended
	Mar. 31, 2019
Fair Value Measurements
Fair Value Measurements	Note 13 – Fair Value Measurements Fair value is defined as the exchange price that would be received for an asset or paid to transfer a liability (an exit price) in the principal or most advantageous market for the asset or liability in an orderly transaction between market participants on the measurement date. The fair value hierarchy established by the Company also requires an entity to maximize the use of observable inputs and minimize the use of unobservable inputs when measuring fair value. Three levels of inputs that may be used to measure fair value are: Level 1: Quoted prices (unadjusted) for identical assets or liabilities in active markets that the Company has the ability to access as of the measurement date. Level 2: Significant observable inputs other than Level 1 prices, such as quoted prices for similar assets or liabilities, quoted prices in markets that are not active, and other inputs that are observable or can be corroborated by observable market data. Level 3: Significant unobservable inputs that reflect a company’s own view about the assumptions that market participants would use in pricing an asset or liability. The majority of securities available-for-sale are valued by external pricing services or dealer market participants and are classified in Level 2 of the fair value hierarchy. Both market and income valuation approaches are utilized. Quarterly, the Company evaluates the methodologies used by the external pricing services or dealer market participants to develop the fair values to determine whether the results of the valuations are representative of an exit price in the Company’s principal markets and an appropriate representation of fair value. The Company uses the following methods and significant assumptions to estimate fair value: · Government-sponsored agency debt securities are primarily priced using available market information through processes such as benchmark spreads, market valuations of like securities, like securities groupings and matrix pricing. · Other government-sponsored agency securities, MBS and some of the actively traded real estate mortgage investment conduits and collateralized mortgage obligations are priced using available market information including benchmark yields, prepayment speeds, spreads, volatility of similar securities and trade date. · State and political subdivisions are largely grouped by characteristics (e.g., geographical data and source of revenue in trade dissemination systems). Because some securities are not traded daily and due to other grouping limitations, active market quotes are often obtained using benchmarking for like securities. · Auction rate securities are priced using market spreads, cash flows, prepayment speeds, and loss analytics. Therefore, the valuations of auction rate asset-backed securities are considered Level 2 valuations. · Asset-backed collateralized loan obligations were priced using data from a pricing matrix supported by our bond accounting service provider and are therefore considered Level 2 valuations. · Annually every security holding is priced by a pricing service independent of the regular and recurring pricing services used. The independent service provides a measurement to indicate if the price assigned by the regular service is within or outside of a reasonable range. Management reviews this report and applies judgment in adjusting calculations at year end related to securities pricing. · Residential mortgage loans available for sale in the secondary market are carried at fair market value. The fair value of loans held-for-sale is determined using quoted secondary market prices. · Lending related commitments to fund certain residential mortgage loans, e.g., residential mortgage loans with locked interest rates to be sold in the secondary market and forward commitments for the future delivery of mortgage loans to third party investors, as well as forward commitments for future delivery of MBS are considered derivatives. Fair values are estimated based on observable changes in mortgage interest rates including prices for MBS from the date of the commitment and do not typically involve significant judgments by management. · The fair value of mortgage servicing rights is based on a valuation model that calculates the present value of estimated net servicing income. The valuation model incorporates assumptions that market participants would use in estimating future net servicing income to derive the resultant value. The Company is able to compare the valuation model inputs, such as the discount rate, prepayment speeds, weighted average delinquency and foreclosure/bankruptcy rates to widely available published industry data for reasonableness. · Interest rate swap positions, both assets and liabilities, are based on valuation pricing models using an income approach reflecting readily observable market parameters such as interest rate yield curves. · The fair value of impaired loans with specific allocations of the allowance for loan and lease losses is essentially based on recent real estate appraisals or the fair value of the collateralized asset. These appraisals may utilize a single valuation approach or a combination of approaches including comparable sales and the income approach. Adjustments are made in the appraisal process by the appraisers to reflect differences between the available comparable sales and income data. Such adjustments are usually significant and typically result in a Level 3 classification of the inputs for determining fair value. · Nonrecurring adjustments to certain commercial and residential real estate properties classified as OREO are measured at the lower of carrying amount or fair value, less costs to sell. Fair values are based on third party appraisals of the property, resulting in a Level 3 classification. In cases where the carrying amount exceeds the fair value, less costs to sell, an impairment loss is recognized. Assets and Liabilities Measured at Fair Value on a Recurring Basis : The tables below present the balance of assets and liabilities at March 31, 2019, and December 31, 2018, respectively, measured by the Company at fair value on a recurring basis: March 31, 2019 Level 1 Level 2 Level 3 Total Assets: Securities available-for-sale U.S. Treasury $ 3,960 $ - $ - $ 3,960 U.S. government agencies - 10,360 - 10,360 U.S. government agencies mortgage-backed - 15,306 - 15,306 States and political subdivisions - 261,616 19,556 281,172 Collateralized mortgage obligations - 64,330 - 64,330 Asset-backed securities - 70,811 - 70,811 Collateralized loan obligations - 63,151 - 63,151 Loans held-for-sale - 2,134 - 2,134 Mortgage servicing rights - - 6,715 6,715 Interest rate swap agreements - 742 - 742 Mortgage banking derivatives - 167 - 167 Total $ 3,960 $ 488,617 $ 26,271 $ 518,848 Liabilities: Interest rate swap agreements $ - $ 742 $ - $ 742 Total $ - $ 742 $ - $ 742 December 31, 2018 Level 1 Level 2 Level 3 Total Assets: Securities available-for-sale U.S. Treasury $ 3,923 $ - $ - $ 3,923 U.S. government agencies - 10,951 - 10,951 U.S. government agencies mortgage-backed - 14,075 - 14,075 States and political subdivisions - 265,902 8,165 274,067 Corporate bonds - - - - Collateralized mortgage obligations - 64,429 - 64,429 Asset-backed securities - 109,514 - 109,514 Collateralized loan obligations - 64,289 - 64,289 Loans held-for-sale - 2,984 - 2,984 Mortgage servicing rights - - 7,357 7,357 Interest rate swap agreements - 672 - 672 Mortgage banking derivatives - 159 - 159 Total $ 3,923 $ 532,975 $ 15,522 $ 552,420 Liabilities: Interest rate swap agreements $ - $ 672 $ - $ 672 Total $ - $ 672 $ - $ 672 The changes in Level 3 assets and liabilities measured at fair value on a recurring basis are as follows: Three Months Ended March 31, 2019 Securities available-for-sale Collateralized States and Mortgage Mortgage Political Servicing Obligation Subdivisions Rights Beginning balance January 1, 2019 $ - $ 8,165 $ 7,357 Transfers into Level 3 - - - Transfers out of Level 3 - - - Total gains or losses Included in earnings - (8) (721) Included in other comprehensive income - 171 - Purchases, issuances, sales, and settlements Purchases - 11,325 - Issuances - - 177 Settlements - (97) (98) Ending balance March 31, 2019 $ - $ 19,556 $ 6,715 Three Months Ended March 31, 2018 Securities available-for-sale Collateralized States and Mortgage Mortgage Political Servicing Obligation Subdivisions Rights Beginning balance January 1, 2018 $ 2,268 $ 14,261 $ 6,944 Transfers into Level 3 - - - Transfers out of Level 3 - - - Total gains or losses Included in earnings 13 - 417 Included in other comprehensive income 28 (699) - Purchases, issuances, sales, and settlements Purchases - 13,085 - Issuances - - 291 Settlements (213) (120) (111) Ending balance March 31, 2018 $ 2,096 $ 26,527 $ 7,541 The following table and commentary presents quantitative and qualitative information about Level 3 fair value measurements as of March 31, 2019: Weighted Measured at fair value Unobservable Average on a recurring basis: Fair Value Valuation Methodology Inputs Range of Input of Inputs Mortgage servicing rights $ 6,715 Discounted Cash Flow Discount Rate 10.0 -17.0% 10.1 % Prepayment Speed 7.0 - 69.0% 11.5 % The following table and commentary presents quantitative and qualitative information about Level 3 fair value measurements as of December 31, 2018: Weighted Measured at fair value Unobservable Average on a recurring basis: Fair Value Valuation Methodology Inputs Range of Input of Inputs Mortgage servicing rights $ 7,357 Discounted Cash Flow Discount Rate 10.0 - 229.7% 10.2 % Prepayment Speed 7.0 - 68.9% 9.6 % In addition to the above, Level 3 fair value measurement included $19.6 million for state and political subdivisions representing various local municipality securities at March 31, 2019. This was classified as securities available-for-sale, and was valued using a discount based on market spreads of similar assets, but the liquidity premium was an unobservable input. The state and political subdivisions securities balance in Level 3 fair value at March 31, 2018, was $26.5 million and collateralized mortgage obligation balance in Level 3 was $2.1 million. Both of these were classified as securities available-for-sale, and were valued using a discount based on market spreads of similar assets, but the liquidity premium was an unobservable input. Assets and Liabilities Measured at Fair Value on a Nonrecurring Basis: The Company may be required, from time to time, to measure certain other assets at fair value on a nonrecurring basis in accordance with GAAP. These assets consist of impaired loans and OREO. For assets measured at fair value on a nonrecurring basis at March 31, 2019, and December 31, 2018, respectively, the following tables provide the level of valuation assumptions used to determine each valuation and the carrying value of the related assets: March 31, 2019 Level 1 Level 2 Level 3 Total Impaired loans 1 $ - $ - $ 8,608 $ 8,608 Other real estate owned, net 2 - - 6,365 6,365 Total $ - $ - $ 14,973 $ 14,973 1 Represents carrying value and related write-downs of loans for which adjustments are substantially based on the appraised value of collateral for collateral-dependent loans; had a carrying amount of $8.8 million and a valuation allowance of $222,000 resulting in a decrease of specific allocations within the allowance for loan and lease losses of $130,000 for the three months ended March 31, 2019. 2 OREO is measured at the lower of carrying or fair value less costs to sell, and had a net carrying amount of $6.4 million, which is made up of the outstanding balance of $15.2 million, net of a valuation allowance of $7.9 million and participations of $937,000 at March 31, 2019. December 31, 2018 Level 1 Level 2 Level 3 Total Impaired loans 1 $ - $ - $ 12,163 $ 12,163 Other real estate owned, net 2 - - 7,175 7,175 Total $ - $ - $ 19,338 $ 19,338 1 Represents carrying value and related write-downs of loans for which adjustments are substantially based on the appraised value of collateral for collateral-dependent loans; had a carrying amount of $12.5 million and a valuation allowance of $352,000, resulting in an increase of specific allocations within the allowance for loan and lease losses of $208,000 for the year December 31, 2018. 2 OREO is measured at the lower of carrying or fair value less costs to sell, and had a net carrying amount of $7.2 million, which is made up of the outstanding balance of $16.1 million, net of a valuation allowance of $8.0 million and participations of $900,000, at December 31, 2018. The Company has estimated the fair values of these assets based primarily on Level 3 inputs. OREO and impaired loans are generally valued using the fair value of collateral provided by third party appraisals. These valuations include assumptions related to cash flow projections, discount rates, and recent comparable sales. The numerical ranges of unobservable inputs for these valuation assumptions are not meaningful.

Fair Values of Financial Instru

Fair Values of Financial Instruments	3 Months Ended
	Mar. 31, 2019
Fair Values of Financial Instruments
Fair Values of Financial Instruments	Note 14 – Fair Values of Financial Instruments The estimated fair values approximate carrying amount for all items except those described in the following table. Securities available-for-sale fair values are based upon market prices or dealer quotes, and if no such information is available, on the rate and term of the security. The carrying value of FHLBC stock approximates fair value as the stock is nonmarketable and can only be sold to the FHLBC or another member institution at par. FHLBC stock is carried at cost and considered a Level 2 fair value. As of March 31, 2019 and 2018, the fair values of loans and leases are estimated on an exit price basis incorporating discounts for credit, liquidity and marketability factors. The fair value of time deposits is estimated using discounted future cash flows at current rates offered for deposits of similar remaining maturities. The fair values of borrowings were estimated based on interest rates available to the Company for debt with similar terms and remaining maturities. The fair value of off balance sheet volume is not considered material. The carrying amount and estimated fair values of financial instruments were as follows: March 31, 2019 Carrying Fair Amount Value Level 1 Level 2 Level 3 Financial assets: Cash and due from banks $ 28,898 $ 28,898 $ 28,898 $ - $ - Interest bearing deposits with financial institutions 11,438 11,438 11,438 - - Securities available-for-sale 509,090 509,090 3,960 485,574 19,556 FHLBC and FRBC Stock 11,179 11,179 - 11,179 - Loans held-for-sale 2,134 2,134 - 2,134 - Net loans 1,883,830 1,893,690 - - 1,893,690 Accrued interest receivable 11,083 11,083 - 11,083 - Financial liabilities: Noninterest bearing deposits $ 629,909 $ 629,909 $ 629,909 $ - $ - Interest bearing deposits 1,493,603 1,491,384 - 1,491,384 - Securities sold under repurchase agreements 42,361 42,361 - 42,361 - Other short-term borrowings 85,000 85,000 - 85,000 - Junior subordinated debentures 57,698 43,284 34,044 9,240 - Senior notes 44,183 45,551 45,551 - - Note payable and other borrowings 13,207 13,207 - 13,207 - Interest rate swap agreements 1,131 1,131 - 1,131 - Borrowing interest payable 764 764 - 764 - Deposit interest payable 963 963 - 963 - December 31, 2018 Carrying Fair Amount Value Level 1 Level 2 Level 3 Financial assets: Cash and due from banks $ 38,599 $ 38,599 $ 38,599 $ - $ - Interest bearing deposits with financial institutions 16,636 16,636 16,636 - - Securities available-for-sale 541,248 541,248 3,923 529,160 8,165 FHLBC and FRBC Stock 13,433 13,433 - 13,433 - Loans held-for-sale 2,984 2,984 - 2,984 - Net loans 1,878,021 1,867,594 - - 1,867,594 Accrued interest receivable 10,940 10,940 - 10,940 - Financial liabilities: Noninterest bearing deposits $ 618,830 $ 618,830 $ 618,830 $ - $ - Interest bearing deposits 1,497,843 1,495,614 - 1,495,614 - Securities sold under repurchase agreements 46,632 46,632 - 46,632 - Other short-term borrowings 149,500 149,500 - 149,500 - Junior subordinated debentures 57,686 47,625 32,989 14,636 - Senior notes 44,158 45,008 45,008 - - Note payable and other borrowings 15,379 15,379 - 15,379 - Interest rate swap agreements 58 58 - 58 - Borrowing interest payable 281 281 - 281 - Deposit interest payable 973 973 - 973 -

Derivatives, Hedging and Financ

Derivatives, Hedging and Financial Instruments with Off-Balance Sheet Risk	3 Months Ended
	Mar. 31, 2019
Mortgage Banking Derivatives
Derivatives, Hedging Activities and Financial Instruments with Off-Balance Sheet Risk	Note 15 – Derivatives, Hedging Activities and Financial Instruments with Off-Balance Sheet Risk Risk Management Objective of Using Derivatives The Company is exposed to certain risk arising from both its business operations and economic conditions. The Company principally manages its exposures to a wide variety of business and operational risks through management of its core business activities. The Company manages economic risks, including interest rate, liquidity, and credit risk primarily by managing the amount, sources, and duration of its assets and liabilities and the use of derivative financial instruments. Specifically, the Company enters into derivative financial instruments to manage exposures that arise from business activities that result in the receipt or payment of future known and uncertain cash amounts, the value of which are determined by interest rates. The Company’s derivative financial instruments are used to manage differences in the amount, timing, and duration of the Company’s known or expected cash receipts and its known or expected cash payments principally related to the Company’s loan portfolio. Cash Flow Hedges of Interest Rate Risk The Company’s objectives in using interest rate derivatives are to add stability to interest expense and to manage its exposure to interest rate movements. To accomplish this objective, the Company primarily uses interest rate swaps as part of its interest rate risk management strategy. Interest rate swaps designated as cash flow hedges involve the receipt of variable-rate amounts from a counterparty in exchange for the Company making fixed-rate payments over the life of the agreements without exchange of the underlying notional amount. During 2019 and 2018, such derivatives were used to hedge the variable cash flows associated with existing variable-rate borrowings. For derivatives designated and that qualify as cash flow hedges of interest rate risk, the gain or loss on the derivative is recorded in Accumulated Other Comprehensive Income and subsequently reclassified into interest expense in the same period(s) during which the hedged transaction affects earnings. Amounts reported in accumulated other comprehensive income related to derivatives will be reclassified to interest expense as interest payments are received on the Company’s variable-rate borrowings. During the next twelve months, the Company estimates that an additional $75,000 will be reclassified as an increase to interest expense. Non-designated Hedges Derivatives not designated as hedges are not speculative and result from a service the Company provides to certain customers. The Company executes interest rate swaps with commercial banking customers to facilitate their respective risk management strategies. Those interest rate swaps are simultaneously hedged by offsetting derivatives that the Company executes with a third party, such that the Company minimizes its net risk exposure resulting from such transactions. As the interest rate derivatives associated with this program do not meet the strict hedge accounting requirements, changes in the fair value of both the customer derivatives and the offsetting derivatives are recognized directly in earnings. The Company also grants mortgage loan interest rate lock commitments to borrowers, subject to normal loan underwriting standards. The interest rate risk associated with these loan interest rate lock commitments is managed with contracts for future deliveries of loans as well as selling forward mortgage-backed securities contracts. Loan interest rate lock commitments generally have fixed expiration dates or other termination clauses and may require payment of a fee. Since many of the commitments are expected to expire without being drawn upon, the total commitment amounts do not necessarily represent future cash requirements. Commitments to originate residential mortgage loans held-for-sale and forward commitments to sell residential mortgage loans or forward MBS contracts are considered derivative instruments and changes in the fair value are recorded to mortgage banking revenue. Fair values are estimated based on observable changes in mortgage interest rates including mortgage-backed securities prices from the date of the commitment. Disclosure of Fair Values of Derivative Instruments on the Balance Sheet The Company entered into a forward starting interest rate swap on August 18, 2015, with an effective date of June 15, 2017. This transaction had a notional amount totaling $25.8 million as of December 31, 2018, was designated as a cash flow hedge of certain junior subordinated debentures and was determined to be fully effective during the period presented. As such, no amount of ineffectiveness has been included in net income. Therefore, the aggregate fair value of the swap is recorded in other liabilities with changes in fair value recorded in other comprehensive income, net of tax. The amount included in other comprehensive income would be reclassified to current earnings should all or a portion of the hedge no longer be considered effective. The Company expects the hedge to remain fully effective during the remaining term of the swap. The Bank will pay the counterparty a fixed rate and receive a floating rate based on three month LIBOR. The trust preferred securities changed from fixed rate to floating rate in June 15, 2017. The cash flow hedge has a maturity date of June 15, 2037. The Bank also has interest rate derivative positions to assist with risk management that are not designated as hedging instruments. These derivative positions relate to transactions in which the Bank enters an interest rate swap with a client while at the same time entering into an offsetting interest rate swap with another financial institution. The Bank had $273,000 of cash collateral pledged with one correspondent financial institution to support interest rate swap activity at March 31, 2019; $2.2 million of investment securities were required to be pledged to two correspondent financial institutions. The Bank had $260,000 of cash collateral pledged with one correspondent financial institution to support interest rate swap activity at December 31, 2018; no investment securities were required to be pledged. At March 31, 2019, the notional amount of non-hedging interest rate swaps was $184.2 million with a weighted average maturity of 6.3 years. At December 31, 2018, the notional amount of non-hedging interest rate swaps was $188.9 million with a weighted average maturity of 6.6 years. The Bank offsets derivative assets and liabilities that are subject to a master netting arrangement. The table below presents the fair value of the Company’s derivative financial instruments as well as their classification on the Balance Sheet as of March 31, 2019, and December 31, 2018. Fair Value of Derivative Instruments March 31, 2019 No. of Trans. Notional Amount $ Balance Sheet Location Fair Value $ Balance Sheet Location Fair Value $ Derivatives designated as hedging instruments Interest rate swaps 25,774 Other Assets - Other Liabilities 1,131 Total derivatives designated as hedging instruments - 1,131 Derivatives not designated as hedging instruments Interest rate swaps with commercial loan customers 184,186 Other Assets 742 Other Liabilities 742 Interest rate lock commitments and forward contracts 33,185 Other Assets 167 Other Liabilities - Other contracts 18,101 Other Assets - Other Liabilities 32 Total derivatives not designated as hedging instruments 909 774 December 31, 2018 No. of Trans. Notional Amount $ Balance Sheet Location Fair Value $ Balance Sheet Location Fair Value $ Derivatives designated as hedging instruments Interest rate swaps 25,774 Other Assets - Other Liabilities 58 Total derivatives designated as hedging instruments - 58 Derivatives not designated as hedging instruments Interest rate swaps with commercial loan customers 188,931 Other Assets 672 Other Liabilities 672 Interest rate lock commitments and forward contracts 18,130 Other Assets 159 Other Liabilities - Other contracts 18,155 Other Assets - Other Liabilities 26 Total derivatives not designated as hedging instruments 831 698 Disclosure of the Effect of Fair Value and Cash Flow Hedge Accounting The fair value and cash flow hedge accounting related to derivatives covered under ASC Subtopic 815-20 impacted Accumulated Other Comprehensive Income (“AOCI”) and the Income Statement. The gain recognized in AOCI on derivatives totaled $1.1 million as of March 31, 2019, and a loss in AOCI of $1.2 million as of March 31, 2018. The amount of the loss reclassified from AOCI to interest income on the income statement totaled $5,000 and $74,000 for the three months ended March 31, 2019, and March 31, 2018, respectively. Credit-risk-related Contingent Features For derivative transactions involving counterparties who are lending customers of the Company, the derivative credit exposure is managed through the normal credit review and monitoring process, which may include collateralization, financial covenants and/or financial guarantees of affiliated parties. Agreements with such customers require that losses associated with derivative transactions receive payment priority from any funds recovered should a customer default and ultimate disposition of collateral or guarantees occur. Credit exposure to broker/dealer counterparties is managed through agreements with each derivative counterparty that require collateralization of fair value gains owed by such counterparties. Some small degree of credit exposure exists due to timing differences between when a gain may occur and the subsequent point in time that collateral is delivered to secure that gain. This is monitored by the Company and procedures are in place to minimize this exposure. Such agreements also require the Company to collateralize counterparties in circumstances wherein the fair value of the derivatives result in loss to the Company. Other provisions of such agreements include the definition of certain events that may lead to the declaration of default and/or the early termination of the derivative transaction(s): · if the Company either defaults or is capable of being declared in default on any of its indebtedness (exclusive of deposit obligations), then the Company could also be declared in default on its derivative obligations. · if a merger occurs that materially changes the Company's creditworthiness in an adverse manner. · If certain specified adverse regulatory actions occur, such as the issuance of a Cease and Desist Order, or citations for actions considered Unsafe and Unsound or that may lead to the termination of deposit insurance coverage by the Federal Deposit Insurance Corporation. As of March 31, 2019, there were no derivatives in a net liability position. As of March 31, 2019, the Company has not posted any collateral related to derivative agreements. The Bank also issues letters of credit, which are conditional commitments that guarantee the performance of a customer to a third party. The credit risk involved and collateral obtained in issuing letters of credit are essentially the same as that involved in extending loan commitments to our customers. In addition to customer related commitments, the Company is responsible for letters of credit commitments that relate to properties held in OREO. The following table represents the Company’s contractual commitments due to letters of credit as of March 31, 2019, and December 31, 2018. The following table is a summary of letter of credit commitments: March 31, 2019 December 31, 2018 Fixed Variable Total Fixed Variable Total Letters of credit: Borrower: Financial standby $ 319 $ 6,837 $ 7,156 $ 327 $ 7,158 $ 7,485 Commercial standby - 410 410 - 397 397 Performance standby 532 6,238 6,770 532 6,381 6,913 851 13,485 14,336 859 13,936 14,795 Non-borrower: Performance standby - 67 67 - 67 67 Total letters of credit $ 851 $ 13,552 $ 14,403 $ 859 $ 14,003 $ 14,862

Summary of Significant Accoun_2

Summary of Significant Accounting Policies (Policies)	3 Months Ended
	Mar. 31, 2019
Summary of Significant Accounting Policies
Recent Accounting Pronouncements	Recent Accounting Pronouncements In February 2016, the FASB issued ASU No. 2016-02 “ Leases (Topic 842) .” This ASU was issued to increase transparency and comparability among organizations by recognizing lease assets and liabilities on the balance sheet and disclosing key information about leasing arrangements. One key revision from prior guidance was to include operating leases within assets and liabilities recorded; another revision was to create a new model to follow for sale-leaseback transactions. The impact of this pronouncement will primarily affect lessees, as virtually all of their assets will be recognized on the balance sheet, by recording a right of use asset and lease liability. This pronouncement is effective for fiscal years beginning after December 15, 2018. In July 2018, the FASB issued ASU No. 2018-11, “Leases (Topic 842): Targeted Improvements ” which provided additional guidance on the transition method, including application as a cumulative-effect adjustment to equity and practical expedients to use when accounting for lease components. The Company adopted this standard as of January 1, 2019, and recorded right of use assets of $817,000 with a like lease liability. As of March 31, 2019, the right of use assets and lessee lease liability totaled $672,000. The Company also recorded leases receivable related to lessor leases of $174,000 as of January 1, 2019 with a like entry to lease liabilities for the lessor position; these tenant leases receivable balances and lessor lease liabilities totaled $142,000 as of March 31, 2019. As no lease incentives, initial direct costs, or prepayments were present with any of these lease arrangements, the present value of the lessee liabilities and lessor receivables was equal to the offsetting right of use assets and lessor lease liabilities, respectively. There was no impact to equity for the adoption of this standard on a modified retrospective basis. In June 2016, the FASB issued ASU No. 2016-13 “ Measurement of Credit Losses on Financial Instruments (Topic 326). ” ASU 2016-13 was issued to provide financial statement users with more useful information about the expected credit losses on financial instruments and other commitments to extend credit held by a reporting entity at each reporting date to enhance the decision making process. The new methodology to be used should reflect expected credit losses based on relevant vintage historical information, supported by reasonable forecasts of projected loss given defaults, which will affect the collectability of the reported amounts. This new methodology will also require available-for-sale debt securities to have a credit loss recorded through an allowance rather than write-downs. ASU 2016-13 is effective for financial statements issued for fiscal years beginning after December 15, 2019. The Company is assessing the impact of ASU 2016-13 on its accounting and disclosures, and has determined that a loss rate model will be used for calculation of future risk assessments upon the ASU’s adoption in 2020. The Company has accumulated historical data by loan pools and collateral classifications, and is on track to calculate estimates for at least two quarters in 2019 on a test basis to confirm the model processes and determine financial statement impact prior to adoption in 2020. The Company is also developing internal control processes and disclosure documentation related to adoption of this standard.
Subsequent Events	Subsequent Events On April 16, 2019, the Company’s Board of Directors declared a cash dividend of $0.01 per share payable on May 6, 2019, to stockholders of record as of April 26, 2019; dividends of $298,000 were paid to stockholders on May 6, 2019.

Acquisitions (Tables)

Acquisitions (Tables)	3 Months Ended
	Mar. 31, 2019
Acquisitions
Summary of acquisition	GCFC/ABC Bank Acquisition Summary As of Date of Acquisition April 20, 2018 Assets Cash and due from banks $ 6,669 Interest bearing deposits with financial institutions 500 Securities available-for-sale, at fair value 72,091 Federal funds sold 4,300 FHLBC stock 1,549 Loans 227,594 Premises and equipment 5,339 Other real estate owned 401 Goodwill and core deposit intangible 13,280 Deferred tax assets, net 3,459 Other assets 1,767 Total assets $ 336,949 Liabilities Noninterest bearing demand $ 58,005 Savings, NOW and money market 91,494 Time 98,999 Total deposits 248,498 Securities sold under repurchase agreements 5,623 Other short-term borrowings 10,875 Notes payable and other borrowings 23,367 Other liabilities 1,406 Total liabilities 289,769 Cash consideration paid 47,180 Total Liabilities Assumed and Cash Consideration Paid for Acquisition $ 336,949
Schedule of Acquired Loans as of Acquisition Date	April 20, 2018 March 31, 2019 ABC Bank Acquired Loans PCI Non-PCI PCI Non-PCI Fair Value $ 11,360 $ 216,234 $ 10,984 $ 167,311 Contractually required principal and interest payments 19,447 220,308 18,046 169,002 Best estimate of contractual cash flows not expected to be collected 6,537 2,511 5,969 965 Best estimate of contractual cash flows expected to be collected 12,910 217,797 12,077 168,037

Securities (Tables)

Securities (Tables)	3 Months Ended
	Mar. 31, 2019
Securities
Schedule of amortized cost and fair value of the securities portfolio and corresponding amounts of gross unrealized gains and losses recognized in accumulated other comprehensive loss	Gross Gross Amortized Unrealized Unrealized Fair March 31, 2019 Cost Gains Losses Value Securities available-for-sale U.S. Treasuries $ 4,007 $ - $ (47) $ 3,960 U.S. government agencies 10,511 - (151) 10,360 U.S. government agencies mortgage-backed 15,278 182 (154) 15,306 States and political subdivisions 276,463 6,796 (2,087) 281,172 Collateralized mortgage obligations 65,354 182 (1,206) 64,330 Asset-backed securities 70,123 838 (150) 70,811 Collateralized loan obligations 63,808 79 (736) 63,151 Total securities available-for-sale $ 505,544 $ 8,077 $ (4,531) $ 509,090 Gross Gross Amortized Unrealized Unrealized Fair December 31, 2018 Cost Gains Losses Value Securities available-for-sale U.S. Treasury $ 4,006 $ - $ (83) $ 3,923 U.S. government agencies 11,112 - (161) 10,951 U.S. government agencies mortgage-backed 14,407 45 (377) 14,075 States and political subdivisions 277,112 1,916 (4,961) 274,067 Collateralized mortgage obligations 66,494 79 (2,144) 64,429 Asset-backed securities 108,574 1,165 (225) 109,514 Collateralized loan obligations 65,162 24 (897) 64,289 Total securities available-for-sale $ 546,867 $ 3,229 $ (8,848) $ 541,248
Schedule of fair value, amortized cost and weighted average yield of debt securities by contractual maturity along with securities not due at a single maturity date, primarily mortgage-backed securities (MBS), asset-backed securities, and collateralized loan obligations	Weighted Amortized Average Fair Securities available-for-sale Cost Yield Value Due in one year or less $ 11,629 2.69 % $ 11,643 Due after one year through five years 6,814 2.53 6,818 Due after five years through ten years 6,189 3.50 6,410 Due after ten years 266,349 3.05 270,621 290,981 3.03 295,492 Mortgage-backed and collateralized mortgage obligations 80,632 3.26 79,636 Asset-backed securities 70,123 3.71 70,811 Collateralized loan obligations 63,808 4.96 63,151 Total securities available-for-sale $ 505,544 3.40 % $ 509,090
Schedule of amortized cost and fair value of securities that exceed 10% of stockholders equity	The Company has invested in securities issued from three originators that individually amount to over 10% of the Company’s stockholders equity. Information regarding these three issuers and the value of the securities issued follows: March 31, 2019 Amortized Fair Issuer Cost Value GCO Education Loan Funding Corp $ 27,777 $ 27,731 Towd Point Mortgage Trust 34,118 33,679 Student Loan Marketing Association 25,824 26,153
Schedule of securities with unrealized losses aggregated by investment category and length of time that individual securities have been in a continuous unrealized loss position	Less than 12 months 12 months or more March 31, 2019 in an unrealized loss position in an unrealized loss position Total Number of Unrealized Fair Number of Unrealized Fair Number of Unrealized Fair Securities available-for-sale Securities Losses Value Securities Losses Value Securities Losses Value U.S. Treasuries - $ - $ - 1 $ 47 $ 3,960 1 $ 47 $ 3,960 U.S. government agencies - - - 4 151 10,360 4 151 10,360 U.S. government agencies mortgage-backed - - - 10 154 9,575 10 154 9,575 States and political subdivisions 4 1 808 9 2,086 41,500 13 2,087 42,308 Collateralized mortgage obligations - - - 11 1,206 53,431 11 1,206 53,431 Asset-backed securities 1 46 27,731 2 104 4,952 3 150 32,683 Collateralized loan obligations 4 159 28,324 4 577 24,837 8 736 53,161 Total securities available-for-sale 9 $ 206 $ 56,863 41 $ 4,325 $ 148,615 50 $ 4,531 $ 205,478 Less than 12 months 12 months or more December 31, 2018 in an unrealized loss position in an unrealized loss position Total Number of Unrealized Fair Number of Unrealized Fair Number of Unrealized Fair Securities available-for-sale Securities Losses Value Securities Losses Value Securities Losses Value U.S. Treasuries - $ - $ - 1 $ 83 $ 3,923 1 $ 83 $ 3,923 U.S. government agencies 3 100 7,385 1 61 3,566 4 161 10,951 U.S. government agencies mortgage-backed - - - 11 377 11,439 11 377 11,439 States and political subdivisions 4 126 17,713 33 4,835 110,326 37 4,961 128,039 Collateralized mortgage obligations 2 309 15,211 10 1,835 43,687 12 2,144 58,898 Asset-backed securities - - - 4 225 16,473 4 225 16,473 Collateralized loan obligations 7 721 46,547 1 176 7,824 8 897 54,371 Total securities available-for-sale 16 $ 1,256 $ 86,856 61 $ 7,592 $ 197,238 77 $ 8,848 $ 284,094
Schedule of proceeds from sale and gross realized gains and losses on sale of securities	Three Months Ended March 31, Securities available-for-sale 2019 2018 Proceeds from sales of securities $ 81,524 $ 2,522 Gross realized gains on securities 605 35 Gross realized losses on securities (578) — Net realized gains $ 27 $ 35 Income tax expense on net realized gains (8) (10) Effective tax rate applied % %

Loans (Tables)

Loans (Tables)	3 Months Ended
	Mar. 31, 2019
Loans
Schedule of major classifications of loans	March 31, 2019 December 31, 2018 Commercial $ 324,450 $ 314,323 Leases 87,730 78,806 Real estate - commercial 835,904 820,941 Real estate - construction 94,787 108,390 Real estate - residential 399,866 407,068 HELOC 133,859 140,442 Other 1 14,018 14,439 Total loans, excluding deferred loan costs and PCI loans 1,890,614 1,884,409 Net deferred loan costs 1,681 1,653 Total loans, excluding PCI loans 1,892,295 1,886,062 PCI loans, net of purchase accounting adjustments 10,851 10,965 Total loans $ 1,903,146 $ 1,897,027
Schedule of aged analysis of past due loans by class of loans	Recorded Investment 90 days or 90 Days or Greater Past 30-59 Days 60-89 Days Greater Past Total Past Due and March 31, 2019 Past Due Past Due Due Due Current Nonaccrual Total Loans Accruing Commercial $ 10 $ - $ - $ 10 $ 324,440 $ - $ 324,450 $ - Leases 110 - - 110 87,506 114 87,730 - Real estate - commercial Owner occupied general purpose 349 90 - 439 155,821 1,732 157,992 - Owner occupied special purpose 599 2,021 - 2,620 188,132 516 191,268 - Non-owner occupied general purpose 775 378 - 1,153 317,566 3,486 322,205 - Non-owner occupied special purpose - - - - 97,074 2,960 100,034 - Retail properties 1,159 - - 1,159 49,441 - 50,600 - Farm - - - - 13,805 - 13,805 - Real estate - construction Homebuilder - - - - 4,456 - 4,456 - Land - - - - 2,686 - 2,686 - Commercial speculative - 350 - 350 54,503 - 54,853 - All other - - - - 32,689 103 32,792 - Real estate - residential Investor 803 - - 803 68,650 337 69,790 - Multi-family - - - - 190,478 - 190,478 - Owner occupied 282 10 - 292 136,177 3,129 139,598 - HELOC 211 359 1 571 132,310 978 133,859 1 Other 1 8 30 3 41 15,630 28 15,699 3 Total, excluding PCI loans $ 4,306 $ 3,238 $ 4 $ 7,548 $ 1,871,364 $ 13,383 $ 1,892,295 $ 4 PCI loans, net of purchase accounting adjustments 1,872 - - 1,872 6,746 2,233 10,851 - Total $ 6,178 $ 3,238 $ 4 $ 9,420 $ 1,878,110 $ 15,616 $ 1,903,146 $ 4 Recorded Investment 90 days or 90 Days or Greater Past 30-59 Days 60-89 Days Greater Past Total Past Due and December 31, 2018 Past Due Past Due Due Due Current Nonaccrual Total Loans Accruing Commercial $ 58 $ - $ 352 $ 410 $ 313,913 $ - $ 314,323 $ 361 Leases - - - - 78,806 - 78,806 - Real estate - commercial Owner occupied general purpose 1,768 - 33 1,801 160,892 1,579 164,272 36 Owner occupied special purpose 826 135 - 961 192,426 395 193,782 - Non-owner occupied general purpose 2,832 203 - 3,035 286,115 4,236 293,386 - Non-owner occupied special purpose - - - - 106,036 3,099 109,135 - Retail properties - 620 - 620 45,968 - 46,588 - Farm - - - - 13,778 - 13,778 - Real estate - construction Homebuilder - - - - 5,102 - 5,102 - Land 266 - - 266 2,478 - 2,744 - Commercial speculative - - 350 350 55,060 - 55,410 355 All other - - - - 45,028 106 45,134 - Real estate - residential Investor 801 156 - 957 69,148 353 70,458 - Multi-family 545 - 179 724 195,504 - 196,228 180 Owner occupied 1,241 705 - 1,946 135,360 3,076 140,382 - HELOC 775 - - 775 138,801 866 140,442 - Other 1 53 5 3 61 16,000 31 16,092 3 Total, excluding PCI loans $ 9,165 $ 1,824 $ 917 $ 11,906 $ 1,860,415 $ 13,741 $ 1,886,062 $ 935 PCI loans, net of purchase accounting adjustments 1,452 - - 1,452 7,248 2,265 10,965 - Total $ 10,617 $ 1,824 $ 917 $ 13,358 $ 1,867,663 $ 16,006 $ 1,897,027 $ 935 1 The “Other” class includes consumer, overdrafts and net deferred costs.
Schedule of credit quality indicators by class of loans	March 31, 2019 Special Pass Mention Substandard Doubtful Total Commercial $ 316,162 $ 1,213 $ 7,075 $ - $ 324,450 Leases 87,616 - 114 - 87,730 Real estate - commercial Owner occupied general purpose 152,313 1,364 4,315 - 157,992 Owner occupied special purpose 183,197 2,055 6,016 - 191,268 Non-owner occupied general purpose 314,375 201 7,629 - 322,205 Non-owner occupied special purpose 95,578 1,496 2,960 - 100,034 Retail Properties 48,833 608 1,159 - 50,600 Farm 11,365 1,218 1,222 - 13,805 Real estate - construction Homebuilder 4,456 - - - 4,456 Land 2,686 - - - 2,686 Commercial speculative 54,853 - - - 54,853 All other 30,203 - 2,589 - 32,792 Real estate - residential Investor 68,799 - 991 - 69,790 Multi-Family 189,673 318 487 - 190,478 Owner occupied 134,735 135 4,728 - 139,598 HELOC 131,880 13 1,966 - 133,859 Other 1 15,671 - 28 - 15,699 Total, excluding PCI loans $ 1,842,395 $ 8,621 $ 41,279 $ - $ 1,892,295 PCI loans, net of purchase accounting adjustments 815 2,893 7,143 - 10,851 Total $ 1,843,210 $ 11,514 $ 48,422 $ - $ 1,903,146 December 31, 2018 Special Pass Mention Substandard 2 Doubtful Total Commercial $ 305,993 $ 8,193 $ 137 $ - $ 314,323 Leases 78,806 - - - 78,806 Real estate - commercial Owner occupied general purpose 157,334 1,660 5,278 - 164,272 Owner occupied special purpose 186,218 3,429 4,135 - 193,782 Non-owner occupied general purpose 284,818 202 8,366 - 293,386 Non-owner occupied special purpose 104,526 1,510 3,099 - 109,135 Retail Properties 44,805 - 1,783 - 46,588 Farm 11,307 1,249 1,222 - 13,778 Real estate - construction Homebuilder 5,102 - - - 5,102 Land 2,744 - - - 2,744 Commercial speculative 55,410 - - - 55,410 All other 42,524 - 2,610 - 45,134 Real estate - residential Investor 69,242 - 1,216 - 70,458 Multi-Family 195,249 - 979 - 196,228 Owner occupied 135,858 - 4,524 - 140,382 HELOC 138,553 - 1,889 - 140,442 Other 1 16,061 - 31 - 16,092 Total, excluding PCI loans $ 1,834,550 $ 16,243 $ 35,269 $ - $ 1,886,062 PCI loans, net of purchase accounting adjustments 907 2,906 7,152 - 10,965 Total $ 1,835,457 $ 19,149 $ 42,421 $ - $ 1,897,027 1 The “Other” class includes consumer, overdrafts and net deferred costs.
Schedule of impaired loans by class of loan	Three Months Ended As of March 31, 2019 March 31, 2019 Unpaid Average Interest Recorded Principal Related Recorded Income Investment Balance Allowance Investment Recognized With no related allowance recorded Commercial $ - $ - $ - $ - $ - Leases 114 154 - 57 - Commercial real estate Owner occupied general purpose 1,810 2,015 - 1,735 1 Owner occupied special purpose 516 661 - 455 - Non-owner occupied general purpose 576 589 - 857 - Non-owner occupied special purpose 2,960 3,575 - 1,480 - Retail properties - - - - - Farm - - - - - Construction Homebuilder - - - - - Land - - - - - Commercial speculative - - - - - All other 103 131 - 76 - Residential Investor 337 450 - 345 - Multi-Family - - - - - Owner occupied 3,611 5,192 - 3,485 10 HELOC 961 1,087 - 923 - Other 1 5 6 - 6 - Total impaired loans with no recorded allowance 10,993 13,860 - 9,419 11 With an allowance recorded Commercial - - - - - Leases - - - - - Commercial real estate Owner occupied general purpose 174 174 72 285 6 Owner occupied special purpose - - - - - Non-owner occupied general purpose 2,968 3,951 21 3,033 2 Non-owner occupied special purpose - - - 1,549 - Retail properties - - - - - Farm - - - - - Construction Homebuilder - - - - - Land - - - - - Commercial speculative - - - - - All other - - - 29 - Residential Investor 802 802 4 805 11 Multi-Family - - - - - Owner occupied 3,440 3,440 42 3,558 41 HELOC 1,423 1,423 71 1,390 20 Other 1 23 24 12 23 - Total impaired loans with a recorded allowance 8,830 9,814 222 10,672 80 Total impaired loans $ 19,823 $ 23,674 $ 222 $ 20,091 $ 91 1 The “Other” class includes consumer, overdrafts and net deferred costs. Impaired loans by class of loans as of December 31, 2018, and for the three months ended March 31, 2018, were as follows: Three Months Ended As of December 31, 2018 March 31, 2018 Unpaid Average Interest Recorded Principal Related Recorded Income Investment Balance Allowance Investment Recognized With no related allowance recorded Commercial $ - $ - $ - $ - $ - Leases - - - 89 - Commercial real estate Owner occupied general purpose 1,659 1,782 - 417 - Owner occupied special purpose 395 530 - 391 - Non-owner occupied general purpose 1,138 1,159 - 602 - Non-owner occupied special purpose - - - - - Retail properties - - - 541 - Farm - - - - - Construction Homebuilder - - - - - Land - - - - - Commercial speculative - - - - - All other 49 73 - 199 - Residential Investor 353 459 - 366 - Multi-Family - - - 2,362 - Owner occupied 3,359 4,882 - 5,178 9 HELOC 884 1,003 - 1,125 - Other 1 7 7 - 12 - Total impaired loans with no recorded allowance 7,844 9,895 - 11,282 9 With an allowance recorded Commercial - - - - - Leases - - - - - Commercial real estate Owner occupied general purpose 396 396 3 152 - Owner occupied special purpose - - - - - Non-owner occupied general purpose 3,098 4,038 97 - - Non-owner occupied special purpose 3,099 3,575 139 1,788 - Retail properties - - - - - Farm - - - - - Construction Homebuilder - - - - - Land - - - - - Commercial speculative - - - - - All other 57 58 1 - - Residential Investor 808 808 4 826 11 Multi-Family - - - - - Owner occupied 3,676 3,679 46 3,559 37 HELOC 1,357 1,357 49 1,064 11 Other 1 24 25 13 - - Total impaired loans with a recorded allowance 12,515 13,936 352 7,389 59 Total impaired loans $ 20,359 $ 23,831 $ 352 $ 18,671 $ 68
Schedule of TDRs modified during the period by type of modification	TDRs that were modified during the period are as follows: TDR Modifications Three Months Ended March 31, 2019 # of Pre-modification Post-modification contracts recorded investment recorded investment Troubled debt restructurings Real estate - commercial Investor occupied general purpose Other 1 1 $ 58 $ 58 Real estate - residential Owner occupied HAMP 2 1 105 9 HELOC HAMP 2 1 39 34 Other 1 1 39 38 Total 4 $ 241 $ 139 TDR Modifications Three Months Ended March 31, 2018 # of Pre-modification Post-modification contracts recorded investment recorded investment Troubled debt restructurings Real estate - residential Investor Deferral 3 1 $ 165 $ 74 HELOC Rate 4 1 24 24 Other 1 4 218 217 Total 6 $ 407 $ 315 1 Other: Change of terms from bankruptcy court. 2 HAMP: Home Affordable Modification Program. 3 Deferral: Refers to the deferral of principal. 4 Rate: Refers to interest rate reduction
Schedule of accretable discount on purchased loans	Accretable Discount- Non-PCI Loans Accretable Discount- PCI Loans Non-Accretable Discount-PCI Loans Total Beginning balance, January 1, 2019 $ 1,867 $ 1,099 $ 5,969 $ 8,935 Purchases - - - - Accretion (365) (14) - (379) Ending balance, March 31, 2019 $ 1,502 $ 1,085 $ 5,969 $ 8,556

Allowance for Loan Losses (Tabl

Allowance for Loan Losses (Tables)	3 Months Ended
	Mar. 31, 2019
Allowance for Loan Losses
Schedule of changes in the allowance for loan losses by segment of loans based on method of impairment	Changes in the allowance for loan and lease losses by segment of loans based on method of impairment for the three months ended March 31, 2019, were as follows: Real Estate Real Estate Real Estate Allowance for loan and lease losses: Commercial Leases Commercial Construction Residential HELOC Other 1 Total Beginning balance $ 2,832 $ 734 $ 10,470 $ 969 $ 1,931 $ 1,449 $ 621 $ 19,006 Charge-offs 12 - 231 - 18 - 84 345 Recoveries 30 - 23 (1) 50 46 57 205 Provision (Release) 202 71 (242) (168) (7) (170) 764 450 Ending balance $ 3,052 $ 805 $ 10,020 $ 800 $ 1,956 $ 1,325 $ 1,358 $ 19,316 Ending balance: Individually evaluated for impairment $ - $ - $ 93 $ - $ 46 $ 71 $ 12 $ 222 Ending balance: Collectively evaluated for impairment 3,052 805 9,927 800 1,910 1,254 1,346 19,094 Ending balance: Acquired and accounted for ASC 310-30 - - - - - - - - Total ending allowance balance $ 3,052 $ 805 $ 10,020 $ 800 $ 1,956 $ 1,325 $ 1,358 $ 19,316 Loans: Ending balance: Individually evaluated for Impairment $ - $ 114 $ 9,004 $ 103 $ 8,190 $ 2,384 $ 28 $ 19,823 Ending balance: Collectively evaluated for impairment 324,450 87,616 826,900 94,684 391,676 131,475 15,671 1,872,472 Ending balance: Acquired and accounted for ASC 310-30 - - 4,102 710 6,039 - - 10,851 Total ending loans balance $ 324,450 $ 87,730 $ 840,006 $ 95,497 $ 405,905 $ 133,859 $ 15,699 $ 1,903,146 1 The “Other” class includes consumer, overdrafts and net deferred costs. Changes in the allowance for loan and lease losses by segment of loans based on method of impairment for three months ended March 31, 2018, were as follows: Real Estate Real Estate Real Estate Allowance for loan and lease losses: Commercial Leases Commercial Construction Residential HELOC Other 1 Total Beginning balance $ 2,453 $ 692 $ 9,522 $ 923 $ 1,846 $ 1,446 $ 579 $ 17,461 Charge-offs 16 5 (96) (16) (60) 27 99 (25) Recoveries 17 - 367 3 911 47 79 1,424 Provision (Release) 150 (70) (420) 201 (963) 69 311 (722) Ending balance $ 2,604 $ 617 $ 9,565 $ 1,143 $ 1,854 $ 1,535 $ 870 $ 18,188 Ending balance: Individually evaluated for impairment $ - $ - $ 503 $ - $ 85 $ - $ - $ 588 Ending balance: Collectively evaluated for impairment 2,604 617 9,062 1,143 1,769 1,535 870 17,600 Total ending allowance balance $ 2,604 $ 617 $ 9,565 $ 1,143 $ 1,854 $ 1,535 $ 870 $ 18,188 Loans: Ending balance: Individually evaluated for impairment $ - $ - $ 4,740 $ 197 $ 10,008 $ 2,268 $ 17 $ 17,230 Ending balance: Collectively evaluated for impairment 281,134 66,344 708,682 91,282 299,368 126,966 10,806 1,584,582 Total ending loan balance $ 281,134 $ 66,344 $ 713,422 $ 91,479 $ 309,376 $ 129,234 $ 10,823 $ 1,601,812

Other Real Estate Owned (Tables

Other Real Estate Owned (Tables)	3 Months Ended
	Mar. 31, 2019
Other Real Estate Owned
Schedule of activity in the other real estate owned (OREO) portfolio, net of valuation reserve	Three Months Ended March 31, Other real estate owned 2019 2018 Balance at beginning of period $ 7,175 $ 8,371 Property additions, net of acquisition adjustments - - Property improvements - 59 Less: Proceeds from property disposals, net of participation purchase and of gains/losses 801 1,255 Period valuation adjustments - 112 Other adjustments 9 - Balance at end of period $ 6,365 $ 7,063
Schedule of activity in valuation allowance	Three Months Ended March 31, 2019 2018 Balance at beginning of period $ 8,027 $ 8,208 Provision for unrealized losses - 112 Reductions taken on sales (152) (221) Balance at end of period $ 7,875 $ 8,099
Schedule of expenses related to foreclosed assets, net of lease revenue	Three Months Ended March 31, 2019 2018 Gain on sales, net $ (73) $ (80) Provision for unrealized losses - 112 Operating expenses 128 156 Less: Lease revenue 5 15 Net OREO expense $ 50 $ 173

Deposits (Tables)

Deposits (Tables)	3 Months Ended
	Mar. 31, 2019
Deposits
Schedule of major classifications of deposits	March 31, 2019 December 31, 2018 Noninterest bearing demand $ 629,909 $ 618,830 Savings 314,029 304,400 NOW accounts 449,288 425,878 Money market accounts 297,899 310,390 Certificates of deposit of less than $100,000 224,899 230,781 Certificates of deposit of $100,000 through $250,000 145,397 159,953 Certificates of deposit of more than $250,000 62,091 66,441 Total deposits $ 2,123,512 $ 2,116,673

Borrowings (Tables)

Borrowings (Tables)	3 Months Ended
	Mar. 31, 2019
Borrowings
Summary of borrowings and junior subordinated debentures	March 31, 2019 December 31, 2018 Securities sold under repurchase agreements $ 42,361 $ 46,632 Other short-term borrowings 1 85,000 149,500 Junior subordinated debentures 57,698 57,686 Senior notes 44,183 44,158 Notes payable and other borrowings 13,207 15,379 Total borrowings $ 242,449 $ 313,355 1 Includes short-term FHLBC advances for both periods presented as well as the outstanding portion of an operating line of credit as of December 31, 2018, which totaled $4 million.

Equity Compensation Plans (Tabl

Equity Compensation Plans (Tables)	3 Months Ended
	Mar. 31, 2019
Equity Compensation Plans
Summary of stock option activity in Incentive Plan	A summary of stock option activity in the Plans for the three months ended March 31, 2019, is as follows: Weighted- Weighted Average Average Remaining Exercise Contractual Aggregate Shares per Price Term (years) Intrinsic Value Beginning outstanding 4,500 $ 7.49 0.1 $ 25 Canceled - - - - Exercised (4,500) 7.49 - (27) Expired - - - - Ending outstanding - $ - - $ - Exercisable at end of period - $ - - $ -
Summary of changes in nonvested shares of restricted share rights	March 31, 2019 Weighted Restricted Average Stock Shares Grant Date and Units Fair Value Unvested at January 1 552,281 $ 11.31 Granted - - Vested (111,437) 7.34 Forfeited - - Unvested at March 31 440,844 $ 12.31

Earnings Per Share (Tables)

Earnings Per Share (Tables)	3 Months Ended
	Mar. 31, 2019
Earnings Per Share
Schedule of Earnings Per Share	Three Months Ended March 31, 2019 2018 Basic earnings per share: Weighted-average common shares outstanding 29,845,653 29,659,454 Net income $ 8,468 $ 9,489 Basic earnings per share $ 0.28 $ 0.32 Diluted earnings per share: Weighted-average common shares outstanding 29,845,653 29,659,454 Dilutive effect of unvested restricted awards 497,978 472,936 Dilutive effect of stock options and warrants - 36,358 Diluted average common shares outstanding 30,343,631 30,168,748 Net Income $ 8,468 $ 9,489 Diluted earnings per share $ 0.28 $ 0.31

Regulatory & Capital Matters (T

Regulatory & Capital Matters (Tables)	3 Months Ended
	Mar. 31, 2019
Regulatory & Capital Matters
Schedule of capital levels and industry defined regulatory minimum required levels	Capital levels and industry defined regulatory minimum required levels are as follows: Minimum Capital To Be Well Capitalized Under Adequacy with Capital Prompt Corrective Actual Conservation Buffer if applicable 1 Action Provisions 2 Amount Ratio Amount Ratio Amount Ratio March 31, 2019 Common equity tier 1 capital to risk weighted assets Consolidated $ 216,215 9.75 % $ 155,231 7.000 % N/A N/A Old Second Bank 300,290 13.60 154,561 7.000 $ 143,521 6.50 % Total capital to risk weighted assets Consolidated 292,151 13.17 232,922 10.500 N/A N/A Old Second Bank 319,601 14.47 231,915 10.500 220,871 10.00 Tier 1 capital to risk weighted assets Consolidated 272,840 12.30 188,548 8.500 N/A N/A Old Second Bank 300,290 13.60 187,681 8.500 176,641 8.00 Tier 1 capital to average assets Consolidated 272,840 10.44 104,536 4.00 N/A N/A Old Second Bank 300,290 11.54 104,087 4.00 130,108 5.00 December 31, 2018 Common equity tier 1 capital to risk weighted assets Consolidated $ 207,597 9.29 % $ 142,444 6.375 % N/A N/A Old Second Bank 295,599 13.29 141,791 6.375 $ 144,571 6.50 % Total capital to risk weighted assets Consolidated 282,126 12.63 220,648 9.875 N/A N/A Old Second Bank 314,600 14.14 219,637 9.875 222,417 10.00 Tier 1 capital to risk weighted assets Consolidated 263,125 11.78 175,960 7.875 N/A N/A Old Second Bank 295,599 13.29 175,153 7.875 177,934 8.00 Tier 1 capital to average assets Consolidated 263,125 10.08 104,415 4.00 N/A N/A Old Second Bank 295,599 11.36 104,084 4.00 130,105 5.00 1 As of March 31, 2019, amounts are shown inclusive of a capital conservation buffer of 2.50%; as compared to December 31, 2018, of 1.875%. 2 The Bank exceeded the general minimum regulatory requirements to be considered “well capitalized.”

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	3 Months Ended
	Mar. 31, 2019
Fair Value Measurements
Schedule of balance of assets and liabilities which are measured at fair value on a recurring basis	March 31, 2019 Level 1 Level 2 Level 3 Total Assets: Securities available-for-sale U.S. Treasury $ 3,960 $ - $ - $ 3,960 U.S. government agencies - 10,360 - 10,360 U.S. government agencies mortgage-backed - 15,306 - 15,306 States and political subdivisions - 261,616 19,556 281,172 Collateralized mortgage obligations - 64,330 - 64,330 Asset-backed securities - 70,811 - 70,811 Collateralized loan obligations - 63,151 - 63,151 Loans held-for-sale - 2,134 - 2,134 Mortgage servicing rights - - 6,715 6,715 Interest rate swap agreements - 742 - 742 Mortgage banking derivatives - 167 - 167 Total $ 3,960 $ 488,617 $ 26,271 $ 518,848 Liabilities: Interest rate swap agreements $ - $ 742 $ - $ 742 Total $ - $ 742 $ - $ 742 December 31, 2018 Level 1 Level 2 Level 3 Total Assets: Securities available-for-sale U.S. Treasury $ 3,923 $ - $ - $ 3,923 U.S. government agencies - 10,951 - 10,951 U.S. government agencies mortgage-backed - 14,075 - 14,075 States and political subdivisions - 265,902 8,165 274,067 Corporate bonds - - - - Collateralized mortgage obligations - 64,429 - 64,429 Asset-backed securities - 109,514 - 109,514 Collateralized loan obligations - 64,289 - 64,289 Loans held-for-sale - 2,984 - 2,984 Mortgage servicing rights - - 7,357 7,357 Interest rate swap agreements - 672 - 672 Mortgage banking derivatives - 159 - 159 Total $ 3,923 $ 532,975 $ 15,522 $ 552,420 Liabilities: Interest rate swap agreements $ - $ 672 $ - $ 672 Total $ - $ 672 $ - $ 672
Schedule of changes in Level 3 assets and liabilities measured at fair value on a recurring basis	Three Months Ended March 31, 2019 Securities available-for-sale Collateralized States and Mortgage Mortgage Political Servicing Obligation Subdivisions Rights Beginning balance January 1, 2019 $ - $ 8,165 $ 7,357 Transfers into Level 3 - - - Transfers out of Level 3 - - - Total gains or losses Included in earnings - (8) (721) Included in other comprehensive income - 171 - Purchases, issuances, sales, and settlements Purchases - 11,325 - Issuances - - 177 Settlements - (97) (98) Ending balance March 31, 2019 $ - $ 19,556 $ 6,715 Three Months Ended March 31, 2018 Securities available-for-sale Collateralized States and Mortgage Mortgage Political Servicing Obligation Subdivisions Rights Beginning balance January 1, 2018 $ 2,268 $ 14,261 $ 6,944 Transfers into Level 3 - - - Transfers out of Level 3 - - - Total gains or losses Included in earnings 13 - 417 Included in other comprehensive income 28 (699) - Purchases, issuances, sales, and settlements Purchases - 13,085 - Issuances - - 291 Settlements (213) (120) (111) Ending balance March 31, 2018 $ 2,096 $ 26,527 $ 7,541
Schedule of quantitative information about level 3 fair value measurements	The following table and commentary presents quantitative and qualitative information about Level 3 fair value measurements as of March 31, 2019: Weighted Measured at fair value Unobservable Average on a recurring basis: Fair Value Valuation Methodology Inputs Range of Input of Inputs Mortgage servicing rights $ 6,715 Discounted Cash Flow Discount Rate 10.0 -17.0% 10.1 % Prepayment Speed 7.0 - 69.0% 11.5 % The following table and commentary presents quantitative and qualitative information about Level 3 fair value measurements as of December 31, 2018: Weighted Measured at fair value Unobservable Average on a recurring basis: Fair Value Valuation Methodology Inputs Range of Input of Inputs Mortgage servicing rights $ 7,357 Discounted Cash Flow Discount Rate 10.0 - 229.7% 10.2 % Prepayment Speed 7.0 - 68.9% 9.6 %
Schedule of assets measured at fair value on a nonrecurring basis	March 31, 2019 Level 1 Level 2 Level 3 Total Impaired loans 1 $ - $ - $ 8,608 $ 8,608 Other real estate owned, net 2 - - 6,365 6,365 Total $ - $ - $ 14,973 $ 14,973 1 Represents carrying value and related write-downs of loans for which adjustments are substantially based on the appraised value of collateral for collateral-dependent loans; had a carrying amount of $8.8 million and a valuation allowance of $222,000 resulting in a decrease of specific allocations within the allowance for loan and lease losses of $130,000 for the three months ended March 31, 2019. 2 OREO is measured at the lower of carrying or fair value less costs to sell, and had a net carrying amount of $6.4 million, which is made up of the outstanding balance of $15.2 million, net of a valuation allowance of $7.9 million and participations of $937,000 at March 31, 2019. December 31, 2018 Level 1 Level 2 Level 3 Total Impaired loans 1 $ - $ - $ 12,163 $ 12,163 Other real estate owned, net 2 - - 7,175 7,175 Total $ - $ - $ 19,338 $ 19,338 1 Represents carrying value and related write-downs of loans for which adjustments are substantially based on the appraised value of collateral for collateral-dependent loans; had a carrying amount of $12.5 million and a valuation allowance of $352,000, resulting in an increase of specific allocations within the allowance for loan and lease losses of $208,000 for the year December 31, 2018. 2 OREO is measured at the lower of carrying or fair value less costs to sell, and had a net carrying amount of $7.2 million, which is made up of the outstanding balance of $16.1 million, net of a valuation allowance of $8.0 million and participations of $900,000, at December 31, 2018.

Fair Values of Financial Inst_2

Fair Values of Financial Instruments (Tables)	3 Months Ended
	Mar. 31, 2019
Fair Values of Financial Instruments
Schedule of carrying amount and estimated fair values of financial instruments	March 31, 2019 Carrying Fair Amount Value Level 1 Level 2 Level 3 Financial assets: Cash and due from banks $ 28,898 $ 28,898 $ 28,898 $ - $ - Interest bearing deposits with financial institutions 11,438 11,438 11,438 - - Securities available-for-sale 509,090 509,090 3,960 485,574 19,556 FHLBC and FRBC Stock 11,179 11,179 - 11,179 - Loans held-for-sale 2,134 2,134 - 2,134 - Net loans 1,883,830 1,893,690 - - 1,893,690 Accrued interest receivable 11,083 11,083 - 11,083 - Financial liabilities: Noninterest bearing deposits $ 629,909 $ 629,909 $ 629,909 $ - $ - Interest bearing deposits 1,493,603 1,491,384 - 1,491,384 - Securities sold under repurchase agreements 42,361 42,361 - 42,361 - Other short-term borrowings 85,000 85,000 - 85,000 - Junior subordinated debentures 57,698 43,284 34,044 9,240 - Senior notes 44,183 45,551 45,551 - - Note payable and other borrowings 13,207 13,207 - 13,207 - Interest rate swap agreements 1,131 1,131 - 1,131 - Borrowing interest payable 764 764 - 764 - Deposit interest payable 963 963 - 963 - December 31, 2018 Carrying Fair Amount Value Level 1 Level 2 Level 3 Financial assets: Cash and due from banks $ 38,599 $ 38,599 $ 38,599 $ - $ - Interest bearing deposits with financial institutions 16,636 16,636 16,636 - - Securities available-for-sale 541,248 541,248 3,923 529,160 8,165 FHLBC and FRBC Stock 13,433 13,433 - 13,433 - Loans held-for-sale 2,984 2,984 - 2,984 - Net loans 1,878,021 1,867,594 - - 1,867,594 Accrued interest receivable 10,940 10,940 - 10,940 - Financial liabilities: Noninterest bearing deposits $ 618,830 $ 618,830 $ 618,830 $ - $ - Interest bearing deposits 1,497,843 1,495,614 - 1,495,614 - Securities sold under repurchase agreements 46,632 46,632 - 46,632 - Other short-term borrowings 149,500 149,500 - 149,500 - Junior subordinated debentures 57,686 47,625 32,989 14,636 - Senior notes 44,158 45,008 45,008 - - Note payable and other borrowings 15,379 15,379 - 15,379 - Interest rate swap agreements 58 58 - 58 - Borrowing interest payable 281 281 - 281 - Deposit interest payable 973 973 - 973 -

Financial Instruments with Off-

Financial Instruments with Off-Balance Sheet Risk and Derivative Transactions (Tables)	3 Months Ended
	Mar. 31, 2019
Financial Instruments with Off-Balance Sheet Risk and Derivative Transactions
Schedule of fair value of derivative financial instruments as well as their classification on the Balance Sheet	March 31, 2019 No. of Trans. Notional Amount $ Balance Sheet Location Fair Value $ Balance Sheet Location Fair Value $ Derivatives designated as hedging instruments Interest rate swaps 25,774 Other Assets - Other Liabilities 1,131 Total derivatives designated as hedging instruments - 1,131 Derivatives not designated as hedging instruments Interest rate swaps with commercial loan customers 184,186 Other Assets 742 Other Liabilities 742 Interest rate lock commitments and forward contracts 33,185 Other Assets 167 Other Liabilities - Other contracts 18,101 Other Assets - Other Liabilities 32 Total derivatives not designated as hedging instruments 909 774 December 31, 2018 No. of Trans. Notional Amount $ Balance Sheet Location Fair Value $ Balance Sheet Location Fair Value $ Derivatives designated as hedging instruments Interest rate swaps 25,774 Other Assets - Other Liabilities 58 Total derivatives designated as hedging instruments - 58 Derivatives not designated as hedging instruments Interest rate swaps with commercial loan customers 188,931 Other Assets 672 Other Liabilities 672 Interest rate lock commitments and forward contracts 18,130 Other Assets 159 Other Liabilities - Other contracts 18,155 Other Assets - Other Liabilities 26 Total derivatives not designated as hedging instruments 831 698
Schedule of financial instrument commitments	March 31, 2019 December 31, 2018 Fixed Variable Total Fixed Variable Total Letters of credit: Borrower: Financial standby $ 319 $ 6,837 $ 7,156 $ 327 $ 7,158 $ 7,485 Commercial standby - 410 410 - 397 397 Performance standby 532 6,238 6,770 532 6,381 6,913 851 13,485 14,336 859 13,936 14,795 Non-borrower: Performance standby - 67 67 - 67 67 Total letters of credit $ 851 $ 13,552 $ 14,403 $ 859 $ 14,003 $ 14,862

Summary of Significant Accoun_3

Summary of Significant Accounting Policies - Accounting Pronouncements (Details) - Accounting Standards Update 2016-02 - USD ($)	Mar. 31, 2019	Jan. 01, 2019
Right of use assets, Operating	$ 672,000	$ 817,000
Lessee lease liabiity, Operating	672,000	817,000
Lease receivable, Lessor	142,000	174,000
Lease liability, Lessor	$ 142,000	$ 174,000

Summary of Significant Accoun_4

Summary of Significant Accounting Policies - Dividend (Details) - USD ($)	May 06, 2019	Mar. 31, 2019	Mar. 31, 2018	Apr. 16, 2019	Jan. 16, 2019	Jan. 16, 2009
Goodwill and Core Deposit Intangible
Amortization of core deposit intangible		$ 132,000	$ 21,000
Subsequent Events
Exercise price of warrant					$ 14.23	$ 13.43
Subsequent Event
Subsequent Events
Dividends Payable, Amount Per Share				$ 0.01
Payments of Dividends	$ 298,000

Acquisitions (Details)

Acquisitions (Details)	Apr. 20, 2018USD ($)item	Mar. 31, 2019USD ($)	Dec. 31, 2018USD ($)	Dec. 31, 2017USD ($)
Business Acquisition [Line Items]
Acquisition expenses		$ 0	$ 3,500,000	$ 65,000
Salaries and Employee Benefits
Business Acquisition [Line Items]
Acquisition expenses			1,100,000
Data Processing, Computer and ATM
Business Acquisition [Line Items]
Acquisition expenses			$ 1,800,000
GCFC/ABC Bank
Business Acquisition [Line Items]
Number of bank branches operated | item	4
Acquisition price	$ 41,100,000
Net cash paid	47,180,000
Subordinated debentures retired	6,600,000
Goodwill	10,200,000
Core deposit intangible	3,100,000
Valuation adjustment, fixed assets	1,500,000
Valuation adjustment, loan valuation mark	11,200,000
Total liabilities	289,769,000
Loans payable		$ 23,400,000
Assets acquired:
Cash on due from banks	6,669,000
Interest bearing deposits with financial institutions	500,000
Securities available-for-sale, at fair value	72,091,000
Federal funds sold	4,300,000
FHLBC stock	1,549,000
Loans	227,594,000
Premises and equipment	5,339,000
Other real estate owned	401,000
Goodwill and core deposit intangible	13,280,000
Deferred tax assets, net	3,459,000
Other assets	1,767,000
Total assets	336,949,000
Liabilities assumed:
Deposits-noninterest bearing demand	58,005,000
Deposits - Savings, NOW and money market	91,494,000
Deposits-Time	98,999,000
Total deposits	248,498,000
Securities sold under repurchase agreements	5,623,000
Other short-term borrowings	10,875,000
Notes payable and other borrowings	23,367,000
Other liabilities	1,406,000
Total liabilities	289,769,000
Cash consideration paid	47,180,000
Total Liabilities Assumed and Cash Consideration Paid for Acquisition	$ 336,949,000

Acquisition of Loans (Details)

Acquisition of Loans (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Apr. 20, 2018
Business Acquisition [Line Items]
Fair Value	$ 10,851
PCI | GCFC/ABC Bank
Business Acquisition [Line Items]
Fair Value	10,984	$ 11,360
Contractually required principal and interest payments	18,046	19,447
Best estimate of contractual cash flows not expected to be collected	5,969	6,537
Best estimate of contractual cash flows expected to be collected	12,077	12,910
Non-PCI | GCFC/ABC Bank
Business Acquisition [Line Items]
Fair Value	167,311	216,234
Contractually required principal and interest payments	169,002	220,308
Best estimate of contractual cash flows not expected to be collected	965	2,511
Best estimate of contractual cash flows expected to be collected	$ 168,037	$ 217,797

Securities - Investment Portfol

Securities - Investment Portfolio (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Dec. 31, 2018
Securities
Pretax realized losses on sale of available-for-sale securities	$ 578
FHLB and FRB Stock
FHLBC stock	5,000	$ 7,200
FRB stock	$ 6,200

Securities - Amortized Cost and

Securities - Amortized Cost and Fair Value (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2019USD ($)item	Mar. 31, 2018USD ($)	Dec. 31, 2018USD ($)
Securities Available-for-Sale
Amortized Cost	$ 505,544	$ 505,544	$ 546,867
Gross Unrealized Gains	8,077		3,229
Gross Unrealized Losses	(4,531)		(8,848)
Fair Value	509,090	509,090	541,248
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Acquired During Period, at Acquisition, at Fair Value	10,851
Other disclosures
Purchases	46,176	23,930
Sales	$ 81,524	$ 2,522
Number of originators | item	3
Securities pledged to secure deposits and for other purposes	$ 321,800		318,400
US Treasury Securities [Member]
Securities Available-for-Sale
Amortized Cost	4,007		4,006
Gross Unrealized Losses	(47)		(83)
Fair Value	3,960		3,923
US Government Corporations and Agencies Securities [Member]
Securities Available-for-Sale
Amortized Cost	10,511		11,112
Gross Unrealized Losses	(151)		(161)
Fair Value	10,360		10,951
U.S. government agencies mortgage-backed
Securities Available-for-Sale
Amortized Cost			14,407
Gross Unrealized Gains			45
Gross Unrealized Losses			(377)
Fair Value			14,075
US States and Political Subdivisions Debt Securities [Member]
Securities Available-for-Sale
Amortized Cost	276,463		277,112
Gross Unrealized Gains	6,796		1,916
Gross Unrealized Losses	(2,087)		(4,961)
Fair Value	281,172		274,067
Collateralized Mortgage Obligations [Member]
Securities Available-for-Sale
Amortized Cost	65,354		66,494
Gross Unrealized Gains	182		79
Gross Unrealized Losses	(1,206)		(2,144)
Fair Value	64,330		64,429
Asset-backed Securities [Member]
Securities Available-for-Sale
Amortized Cost	70,123		108,574
Gross Unrealized Gains	838		1,165
Gross Unrealized Losses	(150)		(225)
Fair Value	70,811		109,514
FFEL
Other disclosures
Asset-backed securities	$ 55,600
Percentage of outstanding principal amount of loans guaranteed by US Department of Education	97
Total added credit enhancement in the form of overcollaterization and/or subordination of outstanding principal	$ 11,700
Percentage of total added credit enhancement in the form of overcollaterization and/or subordination of outstanding principal	12.44
FFEL | Reimbursement requests greater than 5 %
Other disclosures
Percentage of outstanding principal amount of loans guaranteed by US Department of Education	85
Percent of insured loan	5
FFEL | Reimbursement requests greater than 9 %
Other disclosures
Percentage of outstanding principal amount of loans guaranteed by US Department of Education	75
Percent of insured loan	9
Collateralized loan obligations
Securities Available-for-Sale
Amortized Cost	$ 63,808		65,162
Gross Unrealized Gains	79		24
Gross Unrealized Losses	(736)		(897)
Fair Value	63,151		$ 64,289
Mortgage Backed Securities, Issued by US Government Agencies [Member]
Securities Available-for-Sale
Amortized Cost	15,278
Gross Unrealized Gains	182
Gross Unrealized Losses	(154)
Fair Value	15,306
GCO Education Loan Funding Corp [Member]
Securities Available-for-Sale
Amortized Cost	27,777
Fair Value	27,731
Towd Point Mortgage Trust
Securities Available-for-Sale
Amortized Cost	34,118
Fair Value	$ 33,679
Towd Point Mortgage Trust | Stockholders' Equity, Total [Member]
Other disclosures
Credit risk as a percentage of benchmark	10.00%
Student Marketing Association [Member]
Securities Available-for-Sale
Amortized Cost	$ 25,824
Fair Value	$ 26,153
Stockholders' Equity, Total [Member] | GCO Education Loan Funding Corp [Member]
Other disclosures
Credit risk as a percentage of benchmark	10.00%

Securities - Contractural Matur

Securities - Contractural Maturities (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2019	Dec. 31, 2018
Securities Available-for-Sale, Amortized Cost
Due in one year or less	$ 11,629
Due after one year through five years	6,814
Due after five years through ten years	6,189
Due after ten years	266,349
Debt securities excluding securities not due at a single maturity date	290,981
Total	$ 505,544	$ 505,544	$ 546,867
Securities Available-for-Sale, Weighted Average Yield
Due in one year or less (as a percent)	2.69%
Due after one year through five years (as a percent)	2.53%
Due after five years through ten years (as a percent)	3.50%
Due after ten years (as a percent)	3.05%
Debt securities (as a percent)	3.03%
Total (as a percent)	3.40%
Securities Available-for-Sale, Fair Value
Due in one year or less	$ 11,643
Due after one year through five years	6,818
Due after five years through ten years	6,410
Due after ten years	270,621
Debt securities	295,492
Fair Value	509,090	509,090	541,248
Collateralized Mortgage Obligations [Member]
Securities Available-for-Sale, Amortized Cost
Total		65,354	66,494
Securities Available-for-Sale, Fair Value
Fair Value		64,330	64,429
Asset-backed Securities [Member]
Securities Available-for-Sale, Amortized Cost
Securities not due at a single maturity date	$ 70,123
Total		70,123	108,574
Securities Available-for-Sale, Weighted Average Yield
Securities not due at a single maturity date, Weighted Average Yield (as a percent)	3.71%
Securities Available-for-Sale, Fair Value
Securities not due at a single maturity date	$ 70,811
Fair Value		70,811	109,514
Collateralized loan obligations
Securities Available-for-Sale, Amortized Cost
Securities not due at a single maturity date	$ 63,808
Total		63,808	65,162
Securities Available-for-Sale, Weighted Average Yield
Securities not due at a single maturity date, Weighted Average Yield (as a percent)	4.96%
Securities Available-for-Sale, Fair Value
Securities not due at a single maturity date	$ 63,151
Fair Value		$ 63,151	$ 64,289
Mortgage-backed and collateralized mortgage obligations
Securities Available-for-Sale, Amortized Cost
Securities not due at a single maturity date	$ 80,632
Securities Available-for-Sale, Weighted Average Yield
Securities not due at a single maturity date, Weighted Average Yield (as a percent)	3.26%
Securities Available-for-Sale, Fair Value
Securities not due at a single maturity date	$ 79,636

Securities - Unrealized Loss Po

Securities - Unrealized Loss Positions (Details) $ in Thousands	Mar. 31, 2019USD ($)security	Dec. 31, 2018USD ($)security
Securities Available-for-Sale, Number of Securities
Less than 12 months in an unrealized loss position | security	9	16
Greater than 12 months in an unrealized loss position | security	41	61
Total | security	50	77
Securities Available-for-Sale, Unrealized Losses
Less than 12 months in an unrealized loss position	$ 206	$ 1,256
Greater than 12 months in an unrealized loss position	4,325	7,592
Total	4,531	8,848
Securities Available-for-Sale, Fair Value
Less than 12 months in an unrealized loss position	56,863	86,856
Greater than 12 months in an unrealized loss position	148,615	197,238
Total	$ 205,478	$ 284,094
US Treasury Securities [Member]
Securities Available-for-Sale, Number of Securities
Greater than 12 months in an unrealized loss position | security	1	1
Total | security	1	1
Securities Available-for-Sale, Unrealized Losses
Greater than 12 months in an unrealized loss position	$ 47	$ 83
Total	47	83
Securities Available-for-Sale, Fair Value
Greater than 12 months in an unrealized loss position	3,960	3,923
Total	$ 3,960	$ 3,923
US Government Corporations and Agencies Securities [Member]
Securities Available-for-Sale, Number of Securities
Less than 12 months in an unrealized loss position | security		3
Greater than 12 months in an unrealized loss position | security	4	1
Total | security	4	4
Securities Available-for-Sale, Unrealized Losses
Less than 12 months in an unrealized loss position		$ 100
Greater than 12 months in an unrealized loss position	$ 151	61
Total	151	161
Securities Available-for-Sale, Fair Value
Less than 12 months in an unrealized loss position		7,385
Greater than 12 months in an unrealized loss position	10,360	3,566
Total	$ 10,360	$ 10,951
Mortgage Backed Securities, Issued by US Government Agencies [Member]
Securities Available-for-Sale, Number of Securities
Greater than 12 months in an unrealized loss position | security	10	11
Total | security	10	11
Securities Available-for-Sale, Unrealized Losses
Greater than 12 months in an unrealized loss position	$ 154	$ 377
Total	154	377
Securities Available-for-Sale, Fair Value
Greater than 12 months in an unrealized loss position	9,575	11,439
Total	$ 9,575	$ 11,439
US States and Political Subdivisions Debt Securities [Member]
Securities Available-for-Sale, Number of Securities
Less than 12 months in an unrealized loss position | security	4	4
Greater than 12 months in an unrealized loss position | security	9	33
Total | security	13	37
Securities Available-for-Sale, Unrealized Losses
Less than 12 months in an unrealized loss position	$ 1	$ 126
Greater than 12 months in an unrealized loss position	2,086	4,835
Total	2,087	4,961
Securities Available-for-Sale, Fair Value
Less than 12 months in an unrealized loss position	808	17,713
Greater than 12 months in an unrealized loss position	41,500	110,326
Total	$ 42,308	$ 128,039
Collateralized Mortgage Obligations [Member]
Securities Available-for-Sale, Number of Securities
Less than 12 months in an unrealized loss position | security		2
Greater than 12 months in an unrealized loss position | security	11	10
Total | security	11	12
Securities Available-for-Sale, Unrealized Losses
Less than 12 months in an unrealized loss position		$ 309
Greater than 12 months in an unrealized loss position	$ 1,206	1,835
Total	1,206	2,144
Securities Available-for-Sale, Fair Value
Less than 12 months in an unrealized loss position		15,211
Greater than 12 months in an unrealized loss position	53,431	43,687
Total	$ 53,431	$ 58,898
Asset-backed Securities [Member]
Securities Available-for-Sale, Number of Securities
Less than 12 months in an unrealized loss position | security	1
Greater than 12 months in an unrealized loss position | security	2	4
Total | security	3	4
Securities Available-for-Sale, Unrealized Losses
Less than 12 months in an unrealized loss position	$ 46
Greater than 12 months in an unrealized loss position	104	$ 225
Total	150	225
Securities Available-for-Sale, Fair Value
Less than 12 months in an unrealized loss position	27,731
Greater than 12 months in an unrealized loss position	4,952	16,473
Total	$ 32,683	$ 16,473
Collateralized loan obligations
Securities Available-for-Sale, Number of Securities
Less than 12 months in an unrealized loss position | security	4	7
Greater than 12 months in an unrealized loss position | security	4	1
Total | security	8	8
Securities Available-for-Sale, Unrealized Losses
Less than 12 months in an unrealized loss position	$ 159	$ 721
Greater than 12 months in an unrealized loss position	577	176
Total	736	897
Securities Available-for-Sale, Fair Value
Less than 12 months in an unrealized loss position	28,324	46,547
Greater than 12 months in an unrealized loss position	24,837	7,824
Total	$ 53,161	$ 54,371

Securities - Realized Gain (Los

Securities - Realized Gain (Loss) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Dec. 31, 2018
Securities
Sales	$ 81,524	$ 2,522
Gross realized gains on securities	605	35
Gross realized losses on securities	(578)
Securities (losses) gains, net	27	35
Related tax (expense) benefit	$ (8)	$ (10)
Effective tax rate applied (as a percent)	29.60%	28.60%
Available-for-sale Securities Pledged as Collateral	$ 321,800		$ 318,400

Loans - Major Classifications (

Loans - Major Classifications (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018	Mar. 31, 2018
Loans
Total loans, gross	$ 1,890,614	$ 1,884,409
Net deferred loan fees	1,681	1,653
PCI loans, net of purchase accounting adjustments	1,903,146	1,897,027	$ 1,601,812
Total Loans	1,903,146
Other Financing Receivable [Member]
Loans
Total loans, gross	14,018	14,439
PCI
Loans
PCI loans, net of purchase accounting adjustments	10,851	10,965
Non-PCI
Loans
PCI loans, net of purchase accounting adjustments	1,892,295	1,886,062
Commercial Portfolio Segment [Member]
Loans
Total loans, gross	324,450	314,323
PCI loans, net of purchase accounting adjustments	324,450	314,323	281,134
Total Loans	324,450
Commercial Real Estate Portfolio Segment [Member]
Loans
Total loans, gross	835,904	820,941
PCI loans, net of purchase accounting adjustments			713,422
Total Loans	840,006
Commercial Real Estate Portfolio Segment [Member] | Construction Loans
Loans
Total loans, gross	94,787	108,390
PCI loans, net of purchase accounting adjustments			91,479
Total Loans	95,497
Residential Portfolio Segment [Member]
Loans
Total loans, gross	399,866	407,068
PCI loans, net of purchase accounting adjustments			309,376
Total Loans	405,905
Residential Portfolio Segment [Member] | Home Equity Line of Credit
Loans
PCI loans, net of purchase accounting adjustments	133,859	140,442
Consumer Portfolio Segment [Member]
Loans
PCI loans, net of purchase accounting adjustments			129,234
Total Loans	133,859
Consumer Portfolio Segment [Member] | Home Equity Line of Credit
Loans
Total loans, gross	133,859	140,442
Finance Leases Financing Receivable [Member]
Loans
Total loans, gross	87,730	78,806
PCI loans, net of purchase accounting adjustments	87,730	$ 78,806	$ 66,344
Total Loans	$ 87,730

Loans - Major Classifications -

Loans - Major Classifications - Loan Concentrations (Details) - Real Estate Portfolio Segment [Member] - Loan receivables - Customer Concentration Risk [Member]	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Loans
Credit risk as a percentage of benchmark		77.90%
Loans receivable as a percentage of total portfolio	76.90%

Loans - Aging Analysis (Details

Loans - Aging Analysis (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018	Mar. 31, 2018
Aged analysis of past due loans
Total Past Due	$ 9,420	$ 13,358
Current	1,878,110	1,867,663
Nonaccrual	15,616	16,006
Total Loans	1,903,146	1,897,027	$ 1,601,812
Total Loans	1,903,146
Recorded Investment 90 days or Greater Past Due and Accruing	4	935
30 to 59 Days Past Due
Aged analysis of past due loans
Total Past Due	6,178	10,617
60 to 89 Days Past Due
Aged analysis of past due loans
Total Past Due	3,238	1,824
90 Days or Greater Past Due
Aged analysis of past due loans
Total Past Due	4	917
PCI
Aged analysis of past due loans
Total Past Due	1,872	1,452
Current	6,746	7,248
Nonaccrual	2,233	2,265
Total Loans	10,851	10,965
PCI | 30 to 59 Days Past Due
Aged analysis of past due loans
Total Past Due	1,872	1,452
Non-PCI
Aged analysis of past due loans
Total Past Due	7,548	11,906
Current	1,871,364	1,860,415
Nonaccrual	13,383	13,741
Total Loans	1,892,295	1,886,062
Recorded Investment 90 days or Greater Past Due and Accruing	4	935
Non-PCI | 30 to 59 Days Past Due
Aged analysis of past due loans
Total Past Due	4,306	9,165
Non-PCI | 60 to 89 Days Past Due
Aged analysis of past due loans
Total Past Due	3,238	1,824
Non-PCI | 90 Days or Greater Past Due
Aged analysis of past due loans
Total Past Due	4	917
Multifamily
Aged analysis of past due loans
Total Past Due		724
Current	190,478	195,504
Total Loans	190,478	196,228
Recorded Investment 90 days or Greater Past Due and Accruing		180
Multifamily | 30 to 59 Days Past Due
Aged analysis of past due loans
Total Past Due		545
Multifamily | 90 Days or Greater Past Due
Aged analysis of past due loans
Total Past Due		179
Commercial Portfolio Segment [Member]
Aged analysis of past due loans
Total Past Due	10	410
Current	324,440	313,913
Total Loans	324,450	314,323	281,134
Total Loans	324,450
Recorded Investment 90 days or Greater Past Due and Accruing		361
Commercial Portfolio Segment [Member] | 30 to 59 Days Past Due
Aged analysis of past due loans
Total Past Due	10	58
Commercial Portfolio Segment [Member] | 90 Days or Greater Past Due
Aged analysis of past due loans
Total Past Due		352
Finance Leases Financing Receivable [Member]
Aged analysis of past due loans
Total Past Due	110
Current	87,506	78,806
Nonaccrual	114
Total Loans	87,730	78,806	66,344
Total Loans	87,730
Finance Leases Financing Receivable [Member] | 30 to 59 Days Past Due
Aged analysis of past due loans
Total Past Due	110
Commercial Real Estate Portfolio Segment [Member]
Aged analysis of past due loans
Total Loans			713,422
Total Loans	840,006
Commercial Real Estate Portfolio Segment [Member] | Commercial Real Estate, Owner Occupied General Purpose Loan [Member]
Aged analysis of past due loans
Total Past Due	439	1,801
Current	155,821	160,892
Nonaccrual	1,732	1,579
Total Loans	157,992	164,272
Recorded Investment 90 days or Greater Past Due and Accruing		36
Commercial Real Estate Portfolio Segment [Member] | Commercial Real Estate, Owner Occupied General Purpose Loan [Member] | 30 to 59 Days Past Due
Aged analysis of past due loans
Total Past Due	349	1,768
Commercial Real Estate Portfolio Segment [Member] | Commercial Real Estate, Owner Occupied General Purpose Loan [Member] | 60 to 89 Days Past Due
Aged analysis of past due loans
Total Past Due	90
Commercial Real Estate Portfolio Segment [Member] | Commercial Real Estate, Owner Occupied General Purpose Loan [Member] | 90 Days or Greater Past Due
Aged analysis of past due loans
Total Past Due		33
Commercial Real Estate Portfolio Segment [Member] | Commercial Real Estate Owner Occupied Special Purpose Loan [Member]
Aged analysis of past due loans
Total Past Due	2,620	961
Current	188,132	192,426
Nonaccrual	516	395
Total Loans	191,268	193,782
Commercial Real Estate Portfolio Segment [Member] | Commercial Real Estate Owner Occupied Special Purpose Loan [Member] | 30 to 59 Days Past Due
Aged analysis of past due loans
Total Past Due	599	826
Commercial Real Estate Portfolio Segment [Member] | Commercial Real Estate Owner Occupied Special Purpose Loan [Member] | 60 to 89 Days Past Due
Aged analysis of past due loans
Total Past Due	2,021	135
Commercial Real Estate Portfolio Segment [Member] | Commercial Real Estate, Non Owner Occupied General Purpose Loan [Member]
Aged analysis of past due loans
Total Past Due	1,153	3,035
Current	317,566	286,115
Nonaccrual	3,486	4,236
Total Loans	322,205	293,386
Commercial Real Estate Portfolio Segment [Member] | Commercial Real Estate, Non Owner Occupied General Purpose Loan [Member] | 30 to 59 Days Past Due
Aged analysis of past due loans
Total Past Due	775	2,832
Commercial Real Estate Portfolio Segment [Member] | Commercial Real Estate, Non Owner Occupied General Purpose Loan [Member] | 60 to 89 Days Past Due
Aged analysis of past due loans
Total Past Due	378	203
Commercial Real Estate Portfolio Segment [Member] | Commercial Real Estate, Non Owner Occupied Special Purpose Loan [Member]
Aged analysis of past due loans
Current	97,074	106,036
Nonaccrual	2,960	3,099
Total Loans	100,034	109,135
Commercial Real Estate Portfolio Segment [Member] | Commercial Real Estate, Retail Properties Loan [Member]
Aged analysis of past due loans
Total Past Due	1,159	620
Current	49,441	45,968
Total Loans	50,600	46,588
Commercial Real Estate Portfolio Segment [Member] | Commercial Real Estate, Retail Properties Loan [Member] | 30 to 59 Days Past Due
Aged analysis of past due loans
Total Past Due	1,159
Commercial Real Estate Portfolio Segment [Member] | Commercial Real Estate, Retail Properties Loan [Member] | 60 to 89 Days Past Due
Aged analysis of past due loans
Total Past Due		620
Commercial Real Estate Portfolio Segment [Member] | Commercial Real Estate, Farm Loan [Member]
Aged analysis of past due loans
Current	13,805	13,778
Total Loans	13,805	13,778
Commercial Real Estate Portfolio Segment [Member] | Construction Loans
Aged analysis of past due loans
Total Loans			91,479
Total Loans	95,497
Commercial Real Estate Portfolio Segment [Member] | Construction Loans | Construction Real Estate, Homebuilder Loan [Member]
Aged analysis of past due loans
Current	4,456	5,102
Total Loans	4,456	5,102
Commercial Real Estate Portfolio Segment [Member] | Construction Loans | Construction Real Estate, Land Loan [Member]
Aged analysis of past due loans
Total Past Due		266
Current	2,686	2,478
Total Loans	2,686	2,744
Commercial Real Estate Portfolio Segment [Member] | Construction Loans | Construction Real Estate, Land Loan [Member] | 30 to 59 Days Past Due
Aged analysis of past due loans
Total Past Due		266
Commercial Real Estate Portfolio Segment [Member] | Construction Loans | Construction Real Estate, Commercial Speculative Loan [Member]
Aged analysis of past due loans
Total Past Due	350	350
Current	54,503	55,060
Total Loans	54,853	55,410
Recorded Investment 90 days or Greater Past Due and Accruing		355
Commercial Real Estate Portfolio Segment [Member] | Construction Loans | Construction Real Estate, Commercial Speculative Loan [Member] | 60 to 89 Days Past Due
Aged analysis of past due loans
Total Past Due	350
Commercial Real Estate Portfolio Segment [Member] | Construction Loans | Construction Real Estate, Commercial Speculative Loan [Member] | 90 Days or Greater Past Due
Aged analysis of past due loans
Total Past Due		350
Commercial Real Estate Portfolio Segment [Member] | Construction Loans | Construction Real Estate, Other Receivable [Member]
Aged analysis of past due loans
Current	32,689	45,028
Nonaccrual	103	106
Total Loans	32,792	45,134
Residential Portfolio Segment [Member]
Aged analysis of past due loans
Total Loans			309,376
Total Loans	405,905
Residential Portfolio Segment [Member] | Residential Investor Loan [Member]
Aged analysis of past due loans
Total Past Due	803	957
Current	68,650	69,148
Nonaccrual	337	353
Total Loans	69,790	70,458
Residential Portfolio Segment [Member] | Residential Investor Loan [Member] | 30 to 59 Days Past Due
Aged analysis of past due loans
Total Past Due	803	801
Residential Portfolio Segment [Member] | Residential Investor Loan [Member] | 60 to 89 Days Past Due
Aged analysis of past due loans
Total Past Due		156
Residential Portfolio Segment [Member] | Residential Owner Occupied Loan [Member]
Aged analysis of past due loans
Total Past Due	292	1,946
Current	136,177	135,360
Nonaccrual	3,129	3,076
Total Loans	139,598	140,382
Residential Portfolio Segment [Member] | Residential Owner Occupied Loan [Member] | 30 to 59 Days Past Due
Aged analysis of past due loans
Total Past Due	282	1,241
Residential Portfolio Segment [Member] | Residential Owner Occupied Loan [Member] | 60 to 89 Days Past Due
Aged analysis of past due loans
Total Past Due	10	705
Residential Portfolio Segment [Member] | Home Equity Line of Credit
Aged analysis of past due loans
Total Past Due	571	775
Current	132,310	138,801
Nonaccrual	978	866
Total Loans	133,859	140,442
Recorded Investment 90 days or Greater Past Due and Accruing	1
Residential Portfolio Segment [Member] | Home Equity Line of Credit | 30 to 59 Days Past Due
Aged analysis of past due loans
Total Past Due	211	775
Residential Portfolio Segment [Member] | Home Equity Line of Credit | 60 to 89 Days Past Due
Aged analysis of past due loans
Total Past Due	359
Residential Portfolio Segment [Member] | Home Equity Line of Credit | 90 Days or Greater Past Due
Aged analysis of past due loans
Total Past Due	1
Consumer Portfolio Segment [Member]
Aged analysis of past due loans
Total Loans			129,234
Total Loans	133,859
Unallocated Financing Receivables [Member]
Aged analysis of past due loans
Total Past Due	41	61
Current	15,630	16,000
Nonaccrual	28	31
Total Loans	15,699	16,092	$ 10,823
Total Loans	15,699
Recorded Investment 90 days or Greater Past Due and Accruing	3	3
Unallocated Financing Receivables [Member] | 30 to 59 Days Past Due
Aged analysis of past due loans
Total Past Due	8	53
Unallocated Financing Receivables [Member] | 60 to 89 Days Past Due
Aged analysis of past due loans
Total Past Due	30	5
Unallocated Financing Receivables [Member] | 90 Days or Greater Past Due
Aged analysis of past due loans
Total Past Due	$ 3	$ 3

Loans - Inclusion (Details)

Loans - Inclusion (Details)	3 Months Ended
	Mar. 31, 2019USD ($)
Minimum [Member]
Loans by risk rating
Loan commitment for inclusion in credit quality analysis	$ 50,000

Loans - Credit Quality (Details

Loans - Credit Quality (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018	Mar. 31, 2018
Loans by risk rating
Total Loans	$ 1,903,146	$ 1,897,027	$ 1,601,812
PCI loans, net of purchase accounting adjustments	10,851
Total Loans	1,903,146
Multifamily
Loans by risk rating
Total Loans	190,478	196,228
Commercial Portfolio Segment [Member]
Loans by risk rating
Total Loans	324,450	314,323	281,134
Total Loans	324,450
Finance Leases Financing Receivable [Member]
Loans by risk rating
Total Loans	87,730	78,806	66,344
Total Loans	87,730
Commercial Real Estate Portfolio Segment [Member]
Loans by risk rating
Total Loans			713,422
PCI loans, net of purchase accounting adjustments	4,102
Total Loans	840,006
Commercial Real Estate Portfolio Segment [Member] | Commercial Real Estate, Owner Occupied General Purpose Loan [Member]
Loans by risk rating
Total Loans	157,992	164,272
Commercial Real Estate Portfolio Segment [Member] | Commercial Real Estate Owner Occupied Special Purpose Loan [Member]
Loans by risk rating
Total Loans	191,268	193,782
Commercial Real Estate Portfolio Segment [Member] | Commercial Real Estate, Non Owner Occupied General Purpose Loan [Member]
Loans by risk rating
Total Loans	322,205	293,386
Commercial Real Estate Portfolio Segment [Member] | Commercial Real Estate, Non Owner Occupied Special Purpose Loan [Member]
Loans by risk rating
Total Loans	100,034	109,135
Commercial Real Estate Portfolio Segment [Member] | Commercial Real Estate, Retail Properties Loan [Member]
Loans by risk rating
Total Loans	50,600	46,588
Commercial Real Estate Portfolio Segment [Member] | Commercial Real Estate, Farm Loan [Member]
Loans by risk rating
Total Loans	13,805	13,778
Residential Portfolio Segment [Member]
Loans by risk rating
Total Loans			309,376
PCI loans, net of purchase accounting adjustments	6,039
Total Loans	405,905
Residential Portfolio Segment [Member] | Residential Investor Loan [Member]
Loans by risk rating
Total Loans	69,790	70,458
Residential Portfolio Segment [Member] | Residential Owner Occupied Loan [Member]
Loans by risk rating
Total Loans	139,598	140,382
Consumer Portfolio Segment [Member]
Loans by risk rating
Total Loans			129,234
Total Loans	133,859
Unallocated Financing Receivables [Member]
Loans by risk rating
Total Loans	15,699	16,092	10,823
Total Loans	15,699
Pass [Member]
Loans by risk rating
Total Loans	1,843,210	1,835,457
Pass [Member] | Multifamily
Loans by risk rating
Total Loans	189,673	195,249
Pass [Member] | Commercial Portfolio Segment [Member]
Loans by risk rating
Total Loans	316,162	305,993
Pass [Member] | Finance Leases Financing Receivable [Member]
Loans by risk rating
Total Loans	87,616	78,806
Pass [Member] | Commercial Real Estate Portfolio Segment [Member] | Commercial Real Estate, Owner Occupied General Purpose Loan [Member]
Loans by risk rating
Total Loans	152,313	157,334
Pass [Member] | Commercial Real Estate Portfolio Segment [Member] | Commercial Real Estate Owner Occupied Special Purpose Loan [Member]
Loans by risk rating
Total Loans	183,197	186,218
Pass [Member] | Commercial Real Estate Portfolio Segment [Member] | Commercial Real Estate, Non Owner Occupied General Purpose Loan [Member]
Loans by risk rating
Total Loans	314,375	284,818
Pass [Member] | Commercial Real Estate Portfolio Segment [Member] | Commercial Real Estate, Non Owner Occupied Special Purpose Loan [Member]
Loans by risk rating
Total Loans	95,578	104,526
Pass [Member] | Commercial Real Estate Portfolio Segment [Member] | Commercial Real Estate, Retail Properties Loan [Member]
Loans by risk rating
Total Loans	48,833	44,805
Pass [Member] | Commercial Real Estate Portfolio Segment [Member] | Commercial Real Estate, Farm Loan [Member]
Loans by risk rating
Total Loans	11,365	11,307
Pass [Member] | Residential Portfolio Segment [Member] | Residential Investor Loan [Member]
Loans by risk rating
Total Loans	68,799	69,242
Pass [Member] | Residential Portfolio Segment [Member] | Residential Owner Occupied Loan [Member]
Loans by risk rating
Total Loans	134,735	135,858
Pass [Member] | Unallocated Financing Receivables [Member]
Loans by risk rating
Total Loans	15,671	16,061
Special Mention [Member]
Loans by risk rating
Total Loans	11,514	19,149
Special Mention [Member] | Multifamily
Loans by risk rating
Total Loans	318
Special Mention [Member] | Commercial Portfolio Segment [Member]
Loans by risk rating
Total Loans	1,213	8,193
Special Mention [Member] | Commercial Real Estate Portfolio Segment [Member] | Commercial Real Estate, Owner Occupied General Purpose Loan [Member]
Loans by risk rating
Total Loans	1,364	1,660
Special Mention [Member] | Commercial Real Estate Portfolio Segment [Member] | Commercial Real Estate Owner Occupied Special Purpose Loan [Member]
Loans by risk rating
Total Loans	2,055	3,429
Special Mention [Member] | Commercial Real Estate Portfolio Segment [Member] | Commercial Real Estate, Non Owner Occupied General Purpose Loan [Member]
Loans by risk rating
Total Loans	201	202
Special Mention [Member] | Commercial Real Estate Portfolio Segment [Member] | Commercial Real Estate, Non Owner Occupied Special Purpose Loan [Member]
Loans by risk rating
Total Loans	1,496	1,510
Special Mention [Member] | Commercial Real Estate Portfolio Segment [Member] | Commercial Real Estate, Retail Properties Loan [Member]
Loans by risk rating
Total Loans	608
Special Mention [Member] | Commercial Real Estate Portfolio Segment [Member] | Commercial Real Estate, Farm Loan [Member]
Loans by risk rating
Total Loans	1,218	1,249
Special Mention [Member] | Residential Portfolio Segment [Member] | Residential Owner Occupied Loan [Member]
Loans by risk rating
Total Loans	135
Substandard [Member]
Loans by risk rating
Total Loans	48,422	42,421
Substandard [Member] | Multifamily
Loans by risk rating
Total Loans	487	979
Substandard [Member] | Commercial Portfolio Segment [Member]
Loans by risk rating
Total Loans	7,075	137
Substandard [Member] | Finance Leases Financing Receivable [Member]
Loans by risk rating
Total Loans	114
Substandard [Member] | Commercial Real Estate Portfolio Segment [Member] | Commercial Real Estate, Owner Occupied General Purpose Loan [Member]
Loans by risk rating
Total Loans	4,315	5,278
Substandard [Member] | Commercial Real Estate Portfolio Segment [Member] | Commercial Real Estate Owner Occupied Special Purpose Loan [Member]
Loans by risk rating
Total Loans	6,016	4,135
Substandard [Member] | Commercial Real Estate Portfolio Segment [Member] | Commercial Real Estate, Non Owner Occupied General Purpose Loan [Member]
Loans by risk rating
Total Loans	7,629	8,366
Substandard [Member] | Commercial Real Estate Portfolio Segment [Member] | Commercial Real Estate, Non Owner Occupied Special Purpose Loan [Member]
Loans by risk rating
Total Loans	2,960	3,099
Substandard [Member] | Commercial Real Estate Portfolio Segment [Member] | Commercial Real Estate, Retail Properties Loan [Member]
Loans by risk rating
Total Loans	1,159	1,783
Substandard [Member] | Commercial Real Estate Portfolio Segment [Member] | Commercial Real Estate, Farm Loan [Member]
Loans by risk rating
Total Loans	1,222	1,222
Substandard [Member] | Residential Portfolio Segment [Member] | Residential Investor Loan [Member]
Loans by risk rating
Total Loans	991	1,216
Substandard [Member] | Residential Portfolio Segment [Member] | Residential Owner Occupied Loan [Member]
Loans by risk rating
Total Loans	4,728	4,524
Substandard [Member] | Unallocated Financing Receivables [Member]
Loans by risk rating
Total Loans	28	31
PCI
Loans by risk rating
Total Loans	10,851	10,965
PCI | Pass [Member]
Loans by risk rating
Total Loans	815	907
PCI | Special Mention [Member]
Loans by risk rating
Total Loans	2,893	2,906
PCI | Substandard [Member]
Loans by risk rating
Total Loans	7,143	7,152
Non-PCI
Loans by risk rating
Total Loans	1,892,295	1,886,062
Non-PCI | Pass [Member]
Loans by risk rating
Total Loans	1,842,395	1,834,550
Non-PCI | Special Mention [Member]
Loans by risk rating
Total Loans	8,621	16,243
Non-PCI | Substandard [Member]
Loans by risk rating
Total Loans	41,279	35,269
Construction Loans | Commercial Real Estate Portfolio Segment [Member]
Loans by risk rating
Total Loans			$ 91,479
PCI loans, net of purchase accounting adjustments	710
Total Loans	95,497
Construction Loans | Commercial Real Estate Portfolio Segment [Member] | Construction Real Estate, Homebuilder Loan [Member]
Loans by risk rating
Total Loans	4,456	5,102
Construction Loans | Commercial Real Estate Portfolio Segment [Member] | Construction Real Estate, Land Loan [Member]
Loans by risk rating
Total Loans	2,686	2,744
Construction Loans | Commercial Real Estate Portfolio Segment [Member] | Construction Real Estate, Commercial Speculative Loan [Member]
Loans by risk rating
Total Loans	54,853	55,410
Construction Loans | Commercial Real Estate Portfolio Segment [Member] | Construction Real Estate, Other Receivable [Member]
Loans by risk rating
Total Loans	32,792	45,134
Construction Loans | Pass [Member] | Commercial Real Estate Portfolio Segment [Member] | Construction Real Estate, Homebuilder Loan [Member]
Loans by risk rating
Total Loans	4,456	5,102
Construction Loans | Pass [Member] | Commercial Real Estate Portfolio Segment [Member] | Construction Real Estate, Land Loan [Member]
Loans by risk rating
Total Loans	2,686	2,744
Construction Loans | Pass [Member] | Commercial Real Estate Portfolio Segment [Member] | Construction Real Estate, Commercial Speculative Loan [Member]
Loans by risk rating
Total Loans	54,853	55,410
Construction Loans | Pass [Member] | Commercial Real Estate Portfolio Segment [Member] | Construction Real Estate, Other Receivable [Member]
Loans by risk rating
Total Loans	30,203	42,524
Construction Loans | Substandard [Member] | Commercial Real Estate Portfolio Segment [Member] | Construction Real Estate, Other Receivable [Member]
Loans by risk rating
Total Loans	2,589	2,610
Home Equity Line of Credit | Residential Portfolio Segment [Member]
Loans by risk rating
Total Loans	133,859	140,442
Home Equity Line of Credit | Pass [Member] | Residential Portfolio Segment [Member]
Loans by risk rating
Total Loans	131,880	138,553
Home Equity Line of Credit | Special Mention [Member] | Residential Portfolio Segment [Member]
Loans by risk rating
Total Loans	13
Home Equity Line of Credit | Substandard [Member] | Residential Portfolio Segment [Member]
Loans by risk rating
Total Loans	$ 1,966	$ 1,889

Loans - Repossessed Assets (Det

Loans - Repossessed Assets (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Repossessed and foreclosed assets
Other real estate owned	$ 6,365	$ 7,175
Residential Portfolio Segment [Member]
Repossessed and foreclosed assets
Mortgage loans in process of foreclosure	$ 443,000,000	$ 448,000,000

Loans - Impaired Loans - Record

Loans - Impaired Loans - Recorded Investment, Unpaid Principal Balance and Related Allowance (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Recorded Investment
With no related allowance recorded	$ 10,993	$ 7,844
With an allowance recorded	8,830	12,515
Total impaired loans	19,823	20,359
Unpaid Principal Balance
With no related allowance recorded	13,860	9,895
With an allowance recorded	9,814	13,936
Total impaired loans	23,674	23,831
Related Allowance
With an allowance recorded	222	352
Finance Leases Financing Receivable [Member]
Recorded Investment
With no related allowance recorded	114
Unpaid Principal Balance
With no related allowance recorded	154
Commercial Real Estate Portfolio Segment [Member] | Commercial Real Estate, Owner Occupied General Purpose Loan [Member]
Recorded Investment
With no related allowance recorded	1,810	1,659
With an allowance recorded	174	396
Unpaid Principal Balance
With no related allowance recorded	2,015	1,782
With an allowance recorded	174	396
Related Allowance
With an allowance recorded	72	3
Commercial Real Estate Portfolio Segment [Member] | Commercial Real Estate Owner Occupied Special Purpose Loan [Member]
Recorded Investment
With no related allowance recorded	516	395
Unpaid Principal Balance
With no related allowance recorded	661	530
Commercial Real Estate Portfolio Segment [Member] | Commercial Real Estate, Non Owner Occupied General Purpose Loan [Member]
Recorded Investment
With no related allowance recorded	576	1,138
With an allowance recorded	2,968	3,098
Unpaid Principal Balance
With no related allowance recorded	589	1,159
With an allowance recorded	3,951	4,038
Related Allowance
With an allowance recorded	21	97
Commercial Real Estate Portfolio Segment [Member] | Commercial Real Estate, Non Owner Occupied Special Purpose Loan [Member]
Recorded Investment
With no related allowance recorded	2,960
With an allowance recorded		3,099
Unpaid Principal Balance
With no related allowance recorded	3,575
With an allowance recorded		3,575
Related Allowance
With an allowance recorded		139
Residential Portfolio Segment [Member] | Residential Investor Loan [Member]
Recorded Investment
With no related allowance recorded	337	353
With an allowance recorded	802	808
Unpaid Principal Balance
With no related allowance recorded	450	459
With an allowance recorded	802	808
Related Allowance
With an allowance recorded	4	4
Residential Portfolio Segment [Member] | Residential Owner Occupied Loan [Member]
Recorded Investment
With no related allowance recorded	3,611	3,359
With an allowance recorded	3,440	3,676
Unpaid Principal Balance
With no related allowance recorded	5,192	4,882
With an allowance recorded	3,440	3,679
Related Allowance
With an allowance recorded	42	46
Residential Portfolio Segment [Member] | Residential Revolving and Junior Liens Loan [Member]
Recorded Investment
With no related allowance recorded	961	884
With an allowance recorded	1,423	1,357
Unpaid Principal Balance
With no related allowance recorded	1,087	1,003
With an allowance recorded	1,423	1,357
Related Allowance
With an allowance recorded	71	49
Consumer Portfolio Segment [Member]
Recorded Investment
With no related allowance recorded	5	7
With an allowance recorded	23	24
Unpaid Principal Balance
With no related allowance recorded	6	7
With an allowance recorded	24	25
Related Allowance
With an allowance recorded	12	13
Construction Loans | Commercial Real Estate Portfolio Segment [Member] | Construction Real Estate, Other Receivable [Member]
Recorded Investment
With no related allowance recorded	103	49
With an allowance recorded		57
Unpaid Principal Balance
With no related allowance recorded	$ 131	73
With an allowance recorded		58
Related Allowance
With an allowance recorded		$ 1

Loans - Impaired Loans - Averag

Loans - Impaired Loans - Average Recorded Investment and Interest Income Recognized (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Average Recorded Investment
With no related allowance recorded	$ 9,419	$ 11,282
With an allowance recorded	10,672	7,389
Total impaired loans	20,091	18,671
Interest Income Recognized
With no related allowance recorded	11	9
With an allowance recorded	80	59
Total impaired loans	91	68
Finance Leases Financing Receivable [Member]
Average Recorded Investment
With no related allowance recorded	57	89
Commercial Real Estate Portfolio Segment [Member] | Commercial Real Estate, Owner Occupied General Purpose Loan [Member]
Average Recorded Investment
With no related allowance recorded	1,735	417
With an allowance recorded	285	152
Interest Income Recognized
With no related allowance recorded	1
With an allowance recorded	6
Commercial Real Estate Portfolio Segment [Member] | Commercial Real Estate Owner Occupied Special Purpose Loan [Member]
Average Recorded Investment
With no related allowance recorded	455	391
Commercial Real Estate Portfolio Segment [Member] | Commercial Real Estate, Non Owner Occupied General Purpose Loan [Member]
Average Recorded Investment
With no related allowance recorded	857	602
With an allowance recorded	3,033
Interest Income Recognized
With an allowance recorded	2
Commercial Real Estate Portfolio Segment [Member] | Commercial Real Estate, Non Owner Occupied Special Purpose Loan [Member]
Average Recorded Investment
With no related allowance recorded	1,480
With an allowance recorded	1,549	1,788
Commercial Real Estate Portfolio Segment [Member] | Commercial Real Estate, Retail Properties Loan [Member]
Average Recorded Investment
With no related allowance recorded		541
Residential Portfolio Segment [Member] | Residential Investor Loan [Member]
Average Recorded Investment
With no related allowance recorded	345	366
With an allowance recorded	805	826
Interest Income Recognized
With an allowance recorded	11	11
Residential Portfolio Segment [Member] | Multifamily
Average Recorded Investment
With no related allowance recorded		2,362
Residential Portfolio Segment [Member] | Residential Owner Occupied Loan [Member]
Average Recorded Investment
With no related allowance recorded	3,485	5,178
With an allowance recorded	3,558	3,559
Interest Income Recognized
With no related allowance recorded	10	9
With an allowance recorded	41	37
Residential Portfolio Segment [Member] | Residential Revolving and Junior Liens Loan [Member]
Average Recorded Investment
With no related allowance recorded	923	1,125
With an allowance recorded	1,390	1,064
Interest Income Recognized
With an allowance recorded	20	11
Consumer Portfolio Segment [Member]
Average Recorded Investment
With no related allowance recorded	6	12
With an allowance recorded	23
Construction Loans | Commercial Real Estate Portfolio Segment [Member] | Construction Real Estate, Other Receivable [Member]
Average Recorded Investment
With no related allowance recorded	76	$ 199
With an allowance recorded	$ 29

Loans - TDR (Details)

Loans - TDR (Details)	3 Months Ended
	Mar. 31, 2019USD ($)contract	Mar. 31, 2018USD ($)contract	Dec. 31, 2018USD ($)
Troubled debt restructurings - modified during the period
# of contracts | contract	4
Pre-modification recorded investment	$ 241,000	$ 407,000
Post-modification recorded investment	139,000	$ 315,000
TDR's defaulted
# of contracts | contract		6
Pre-modification outstanding recorded investment during the period	0	$ 0
Other information
Total Past Due	$ 9,420,000		$ 13,358,000
Others [Member]
Troubled debt restructurings - modified during the period
# of contracts | contract	1
Pre-modification recorded investment	$ 58,000	218,000
Post-modification recorded investment	$ 58,000	$ 217,000
TDR's defaulted
# of contracts | contract		4
Home Affordable Modification Program [Member]
Troubled debt restructurings - modified during the period
# of contracts | contract	1
Pre-modification recorded investment	$ 39,000
Post-modification recorded investment	34,000
Interest Rate Concession Below Normal Market [Member]
Troubled debt restructurings - modified during the period
Pre-modification recorded investment		$ 24,000
Post-modification recorded investment		$ 24,000
TDR's defaulted
# of contracts | contract		1
Commercial Real Estate Portfolio Segment [Member] | Commercial Real Estate Owner Occupied Special Purpose Loan [Member]
Other information
Total Past Due	2,620,000		961,000
Commercial Real Estate Portfolio Segment [Member] | Commercial Real Estate, Owner Occupied General Purpose Loan [Member]
Other information
Total Past Due	439,000		1,801,000
Commercial Real Estate Portfolio Segment [Member] | Commercial Real Estate, Non Owner Occupied General Purpose Loan [Member]
Other information
Total Past Due	$ 1,153,000		3,035,000
Residential Portfolio Segment [Member] | Home Affordable Modification Program [Member]
Troubled debt restructurings - modified during the period
# of contracts | contract	1
Pre-modification recorded investment	$ 105,000
Post-modification recorded investment	9,000
Residential Portfolio Segment [Member] | Residential Investor Loan [Member]
Other information
Total Past Due	803,000		957,000
Residential Portfolio Segment [Member] | Residential Investor Loan [Member] | Deferral [Member]
Troubled debt restructurings - modified during the period
Pre-modification recorded investment		$ 165,000
Post-modification recorded investment		$ 74,000
TDR's defaulted
# of contracts | contract		1
Residential Portfolio Segment [Member] | Residential Owner Occupied Loan [Member]
Other information
Total Past Due	$ 292,000		1,946,000
Residential Portfolio Segment [Member] | Residential Revolving and Junior Liens Loan [Member] | Others [Member]
Troubled debt restructurings - modified during the period
# of contracts | contract	1
Pre-modification recorded investment	$ 39,000
Post-modification recorded investment	38,000
Commercial Portfolio Segment [Member]
Other information
Total Past Due	10,000		410,000
90 Days or Greater Past Due
Other information
Total Past Due	$ 4,000		917,000
90 Days or Greater Past Due | Commercial Real Estate Portfolio Segment [Member] | Commercial Real Estate, Owner Occupied General Purpose Loan [Member]
Other information
Total Past Due			33,000
90 Days or Greater Past Due | Commercial Portfolio Segment [Member]
Other information
Total Past Due			$ 352,000

Loans - Accretable Discount on

Loans - Accretable Discount on Purchased Loans (Details) - USD ($)	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Accretable discount	$ 8,935,000	$ 148,000
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield Movement Schedule [Roll Forward]
Beginning balance	8,935,000
Accretion	(379,000)
Ending balance	8,556,000
PCI
Accretable discount	1,099,000
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield Movement Schedule [Roll Forward]
Beginning balance	1,099,000
Beginning balance	5,969,000
Accretion	(14,000)
Ending balance	1,085,000
Ending balance	5,969,000
Non-PCI
Accretable discount	1,867,000	$ 694,000
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield Movement Schedule [Roll Forward]
Beginning balance	1,867,000
Accretion	(365,000)
Ending balance	$ 1,502,000

Allowance for Loan Losses (Deta

Allowance for Loan Losses (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Dec. 31, 2018
Allowance for loan losses:
Beginning Balance	$ 19,006	$ 17,461
Charge-offs	345	(25)
Recoveries	205	1,424
Provision (release)	450	(722)
Ending Balance	19,316	18,188
Ending balance: Individually evaluated for impairment	222	588
Ending balance: Collectively evaluated for impairment	19,094	17,600
Loans:
Ending balance	1,903,146	1,601,812	$ 1,897,027
Ending balance	1,903,146
Ending balance: Individually evaluated for impairment	19,823	17,230
Ending balance: Collectively evaluated for impairment	1,872,472	1,584,582
Ending balance: Acquired and accounted for ASC 310-30	10,851
Commercial Portfolio Segment [Member]
Allowance for loan losses:
Beginning Balance	2,832	2,453
Charge-offs	12	16
Recoveries	30	17
Provision (release)	202	150
Ending Balance	3,052	2,604
Ending balance: Collectively evaluated for impairment	3,052	2,604
Loans:
Ending balance	324,450	281,134	314,323
Ending balance	324,450
Ending balance: Collectively evaluated for impairment	324,450	281,134
Finance Leases Financing Receivable [Member]
Allowance for loan losses:
Beginning Balance	734	692
Charge-offs		5
Provision (release)	71	(70)
Ending Balance	805	617
Ending balance: Collectively evaluated for impairment	805	617
Loans:
Ending balance	87,730	66,344	78,806
Ending balance	87,730
Ending balance: Individually evaluated for impairment	114
Ending balance: Collectively evaluated for impairment	87,616	66,344
Commercial Real Estate Portfolio Segment [Member]
Allowance for loan losses:
Beginning Balance	10,470	9,522
Charge-offs	231	(96)
Recoveries	23	367
Provision (release)	(242)	(420)
Ending Balance	10,020	9,565
Ending balance: Individually evaluated for impairment	93	503
Ending balance: Collectively evaluated for impairment	9,927	9,062
Loans:
Ending balance		713,422
Ending balance	840,006
Ending balance: Individually evaluated for impairment	9,004	4,740
Ending balance: Collectively evaluated for impairment	826,900	708,682
Ending balance: Acquired and accounted for ASC 310-30	4,102
Residential Portfolio Segment [Member]
Allowance for loan losses:
Beginning Balance	1,931	1,846
Charge-offs	18	(60)
Recoveries	50	911
Provision (release)	(7)	(963)
Ending Balance	1,956	1,854
Ending balance: Individually evaluated for impairment	46	85
Ending balance: Collectively evaluated for impairment	1,910	1,769
Loans:
Ending balance		309,376
Ending balance	405,905
Ending balance: Individually evaluated for impairment	8,190	10,008
Ending balance: Collectively evaluated for impairment	391,676	299,368
Ending balance: Acquired and accounted for ASC 310-30	6,039
Consumer Portfolio Segment [Member]
Allowance for loan losses:
Beginning Balance	1,449	1,446
Charge-offs		27
Recoveries	46	47
Provision (release)	(170)	69
Ending Balance	1,325	1,535
Ending balance: Individually evaluated for impairment	71
Ending balance: Collectively evaluated for impairment	1,254	1,535
Loans:
Ending balance		129,234
Ending balance	133,859
Ending balance: Individually evaluated for impairment	2,384	2,268
Ending balance: Collectively evaluated for impairment	131,475	126,966
Unallocated Financing Receivables [Member]
Allowance for loan losses:
Beginning Balance	621	579
Charge-offs	84	99
Recoveries	57	79
Provision (release)	764	311
Ending Balance	1,358	870
Ending balance: Individually evaluated for impairment	12
Ending balance: Collectively evaluated for impairment	1,346	870
Loans:
Ending balance	15,699	10,823	$ 16,092
Ending balance	15,699
Ending balance: Individually evaluated for impairment	28	17
Ending balance: Collectively evaluated for impairment	15,671	10,806
Construction Loans | Commercial Real Estate Portfolio Segment [Member]
Allowance for loan losses:
Beginning Balance	969	923
Charge-offs		(16)
Recoveries		3
Recoveries, net	(1)
Provision (release)	(168)	201
Ending Balance	800	1,143
Ending balance: Collectively evaluated for impairment	800	1,143
Loans:
Ending balance		91,479
Ending balance	95,497
Ending balance: Individually evaluated for impairment	103	197
Ending balance: Collectively evaluated for impairment	94,684	$ 91,282
Ending balance: Acquired and accounted for ASC 310-30	$ 710

Other Real Estate Owned (Detail

Other Real Estate Owned (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Activity in the other real estate owned (OREO) portfolio, net of valuation reserve
Balance at beginning of period	$ 7,175
Balance at end of period	6,365
Activity in the valuation allowance
Provision for unrealized losses		$ 112
Expenses related to foreclosed assets, net of lease revenue
Gain on sales, net	(73)	(80)
Provision for unrealized losses		112
Real Estate, Other
Activity in the other real estate owned (OREO) portfolio, net of valuation reserve
Balance at beginning of period	7,175	8,371
Property improvements		59
Less: Property disposals, net of gains/losses	801	1,255
Less: Period valuation adjustments		112
Less: Other adjustments	9
Balance at end of period	6,365	7,063
Activity in the valuation allowance
Balance at beginning of period	8,027	8,208
Provision for unrealized losses		112
Reductions taken on sales	(152)	(221)
Balance at end of period	7,875	8,099
Expenses related to foreclosed assets, net of lease revenue
Gain on sales, net	(73)	(80)
Provision for unrealized losses		112
Operating expenses	128	156
Less: Lease revenue	5	15
Expenses related to OREO, net of lease revenue	$ 50	$ 173

Deposits - Components and Matur

Deposits - Components and Maturities (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Deposits
Noninterest bearing demand	$ 629,909	$ 618,830
Savings	314,029	304,400
NOW accounts	449,288	425,878
Money market accounts	297,899	310,390
Certificates of deposit of less than $100,000	224,899	230,781
Certificates of deposit of $100,000 up to $250,000	145,397	159,953
Certificates of deposit of $250,000 or more	62,091	66,441
Total deposits	$ 2,123,512	$ 2,116,673

Borrowings - Summary (Details)

Borrowings - Summary (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Borrowings
Senior Notes	$ 44,183	$ 44,158
Total borrowings	242,449	313,355
Securities Sold under Agreements to Repurchase [Member]
Borrowings
Total borrowings	42,361	46,632
Federal Home Loan Bank Advances [Member]
Borrowings
Total borrowings	85,000	149,500
Junior Subordinated Debt [Member]
Borrowings
Total borrowings	57,698	57,686
Senior Notes.
Borrowings
Senior Notes	44,183	44,158
Notes Payable to Banks [Member]
Borrowings
Total borrowings	$ 13,207	$ 15,379

Borrowings - Additional informa

Borrowings - Additional information (Details) - USD ($)	3 Months Ended		12 Months Ended
	Mar. 31, 2019	Dec. 31, 2016	Dec. 31, 2018	Apr. 20, 2018
Borrowings
Interest rate (as a percent)		5.75%
Bank owned FHLBC stock	$ 5,000,000		$ 7,200,000
Senior notes	44,183,000		44,158,000
Debt Instrument, Term		10 years
Interest rate term		5 years
Total borrowings	242,449,000		313,355,000
GCFC/ABC Bank
Borrowings
FHLBC advance amount	$ 13,200,000
Subordinated Debt.				$ 6,600,000
Debt Instrument, Term	7 years
Debt assumed	$ 23,400,000
GCFC/ABC Bank | Minimum [Member]
Borrowings
Interest rate (as a percent)	1.60%
GCFC/ABC Bank | Maximum [Member]
Borrowings
Interest rate (as a percent)	2.83%
Debt Instrument, Variable Rate Base LIBOR [Member]
Borrowings
Basis points added to reference rate (as a percent)		385.00%
Securities Sold under Agreements to Repurchase [Member]
Borrowings
Carrying amount of securities secured	$ 42,400,000		46,600,000
Fair value of the pledged collateral	75,800,000		72,800,000
Total borrowings	$ 42,361,000		46,632,000
Securities Sold under Agreements to Repurchase [Member] | Minimum [Member]
Borrowings
Threshold percentage of stockholders' equity	10.00%
Federal Home Loan Bank Advances [Member]
Borrowings
Borrowings at FHLBC as percentage of total assets	35.00%
Borrowings at FHLBC as percentage of book value of certain mortgage loans	60.00%
FHLBC advance amount	$ 85,000,000		145,500,000
Bank owned FHLBC stock	5,000,000
Fair value of securities collateralized	78,200,000
Principal balance of loans collateralized	758,700,000
Combined collateral value	$ 577,700,000
Percentage increase in collateral pledged in support of federal home loan bank advances	482.10%
Amount available for additional borrowings	$ 405,100,000
Total borrowings	$ 85,000,000		149,500,000
FHLB advances at 2.54%
Borrowings
Interest rate (as a percent)	2.54%
FHLBC advance amount	$ 70,000,000
FHLB advances at 1.60% to 2.56%
Borrowings
FHLBC advance amount	$ 15,000,000
FHLB advances at 1.60% to 2.56% | Minimum [Member]
Borrowings
Interest rate (as a percent)	1.60%
FHLB advances at 1.60% to 2.56% | Maximum [Member]
Borrowings
Interest rate (as a percent)	2.56%
Notes Payable to Banks [Member]
Borrowings
Total borrowings	$ 13,207,000		15,379,000
Credit Facility [Member]
Borrowings
Maximum borrowing capacity			$ 20,000,000
Debt Instrument, Term			360 days
Short-term debt			$ 4,000,000
Junior Subordinated Debt [Member]
Borrowings
Total borrowings	57,698,000		57,686,000
Senior Notes.
Borrowings
Senior notes	44,183,000		44,158,000
Debt issuance costs	$ 817,000		$ 842,000
Amortization period for deferred financing costs	10 years

Junior Subordinated Debentures

Junior Subordinated Debentures - Issuance (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Apr. 30, 2007	Jul. 31, 2003	Jun. 30, 2003	Mar. 31, 2019	Dec. 31, 2018
Junior subordinated debentures
Junior subordinated debentures	$ 57,698				$ 57,698	$ 57,686
Old Second Capital Trust I [Member]
Junior subordinated debentures
Proceeds from sale of cumulative trust preferred securities			$ 4,100	$ 27,500
Maturity Period					30 years
Cash distribution rate of trust preferred securities (as a percent)					7.80%
Old Second Capital Trust II [Member]
Junior subordinated debentures
Proceeds from sale of cumulative trust preferred securities		$ 25,000
Maturity Period					30 years
Old Second Capital Trust II [Member] | Debt Instrument, Redemption, Period One [Member]
Junior subordinated debentures
Cash distribution rate of trust preferred securities (as a percent)	4.39%
Cash distribution fixed rate of trust preferred securities (as a percent)					6.77%
Old Second Capital Trust II [Member] | Debt Instrument, Redemption, Period Two [Member]
Junior subordinated debentures
Basis points added to cash distribution floating rate base (as a percent)					1.50%
Old Second Capital Trust II [Member] | Debt Instrument, Redemption, Period Two [Member] | Debt Instrument, Variable Rate Base LIBOR [Member]
Junior subordinated debentures
Cash distribution, floating rate base					three-month LIBOR
Junior Subordinated Debt [Member]
Junior subordinated debentures
Junior Subordinated Debentures issuance cost	$ 680				$ 680	$ 692
Junior Subordinated Debt [Member] | Old Second Capital Trust I [Member]
Junior subordinated debentures
Junior subordinated debentures	32,600				32,600
Junior Subordinated Debt [Member] | Old Second Capital Trust II [Member]
Junior subordinated debentures
Junior subordinated debentures	$ 25,800				$ 25,800

Equity Compensation Plans - Opt

Equity Compensation Plans - Options (Details) - USD ($)	3 Months Ended		12 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Dec. 31, 2018	May 31, 2019	Jun. 01, 2016	May 20, 2014
Equity Compensation Plans
Total compensation cost	$ 578,000	$ 401,000
Exercised (in shares)	4,500
Shares
Exercised (in shares)	(4,500)
Aggregate Intrinsic Value
Exercised (in dollars)	$ (27,000)
2014 Plan
Equity Compensation Plans
Number of shares authorized				600,000	975,000	375,000
Employee and Nonemployee Stock Options [Member]
Equity Compensation Plans
Granted (in shares)		0
Term of stock options granted	10 years
Exercised (in shares)	4,500	0
Total unrecognized compensation cost	$ 0
Shares
Beginning outstanding (in shares)	4,500
Exercised (in shares)	(4,500)	0
Ending outstanding (in shares)			4,500
Weighted Average Exercise Price
Beginning outstanding (in dollars per share)	$ 7.49
Exercised (in dollars per share)	$ 7.49
Ending outstanding (in dollars per share)			$ 7.49
Weighted Average Remaining Contractual Term (years)
Ending outstanding (in years)	0 years		1 month 6 days
Aggregate Intrinsic Value
Ending outstanding (in dollars)			$ 25,000
Restricted Stock and Restricted Stock Units [Member]
Equity Compensation Plans
Vesting period	3 years

Equity Compensation Plans - Sum

Equity Compensation Plans - Summary of stock option activity (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	May 31, 2019	Jun. 01, 2016	May 20, 2014
Summary Of Stock Option Activity [Abstract]
Intrinsic value of options exercised	$ 27
Cash received from options exercised	32
Stock based compensation	$ 573	$ 395
2014 Plan
Summary Of Stock Option Activity [Abstract]
Number of shares authorized			600,000	975,000	375,000
Number of shares issuable	169,791

Equity Compensation Plans - Res

Equity Compensation Plans - Restricted Stock and RSUs (Details) - Restricted Stock and Restricted Stock Units [Member] - USD ($) $ / shares in Units, $ in Millions	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Changes in unvested awards
Nonvested at the beginning of the period (in shares)	552,281
Granted (in shares)		114,281
Vested (in shares)	(111,437)
Nonvested at the end of the period (in shares)	440,844
Weighted Average Grant Date Fair Value
Nonvested at the beginning of the period (in dollars per share)	$ 11.31
Vested (in dollars per share)	7.34
Nonvested at the end of the period (in dollars per share)	$ 12.31
Additional information
Total unrecognized compensation cost of restricted awards	$ 2.5
Expected weighted-average period for recognition of unrecognized compensation	1 year 10 months 2 days

Earnings Per Share - Reconcilia

Earnings Per Share - Reconciliation (Details) - USD ($)	Jan. 16, 2019	Mar. 31, 2019	Mar. 31, 2018	Dec. 31, 2016	Dec. 31, 2009	Mar. 31, 2019	Jan. 16, 2009
Basic earnings per share:
Weighted-average common shares outstanding		29,845,653	29,659,454
Net income		$ 8,468,000	$ 9,489,000
Basic earnings per share (in dollars per share)		$ 0.28	$ 0.32
Diluted earnings per share:
Weighted-average common shares outstanding		29,845,653	29,659,454
Diluted average common shares outstanding		30,343,631	30,168,748
Net earnings available to common stockholders		$ 8,468,000	$ 9,489,000
Diluted earnings per share (in dollars per share)		$ 0.28	$ 0.31
Warrants, exercise price (in dollars per share)	$ 14.23						$ 13.43
Warrant term				10 years
Stock warrants exercised	$ (313,000)
Stock warrants exercised (in shares)	45,836
Warrant [Member]
Diluted earnings per share:
Antidilutive securities			815,339
Warrants, exercise price (in dollars per share)							$ 13.43
Warrant term		10 years	10 years		10 years	10 years
Restricted Stock and Restricted Stock Units [Member]
Diluted earnings per share:
Dilutive effect of share-based payment awards (in shares)		497,978	472,936
Employee and Nonemployee Stock Options [Member]
Diluted earnings per share:
Dilutive effect of share-based payment awards (in shares)			36,358

Regulatory & Capital Matters (D

Regulatory & Capital Matters (Details)	3 Months Ended
	Mar. 31, 2019	Dec. 31, 2018
Regulatory & Capital Matters
Tier 1 capital leverage ratio (as a percent)	10.44%	10.08%
Risk-based capital ratio (as a percent)	13.17%	12.63%
Subsidiaries [Member]
Regulatory & Capital Matters
Tier 1 capital leverage ratio (as a percent)	11.54%	11.36%
Risk-based capital ratio (as a percent)	14.47%	14.14%
Tier One leverage ratio, basis point increase (as a percent)	0.18%
Risk-based capital ratio, basis point decrease (as a percent)	0.33%
Minimum [Member] | Subsidiaries [Member]
Regulatory & Capital Matters
Tier 1 capital leverage ratio, board-designated threshold	8.00%
Total Capital Ratio, board-designated threshold (as a percent)	12.00%

Regulatory & Capital Matters -

Regulatory & Capital Matters - Capital Levels and Industry Defined Regulatory Minimums (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Common equity tier 1 capital to risk weighted assets
Actual	$ 216,215	$ 207,597
Minimum Required for Capital Adequacy Purposes with Capital Conservation Buffer if applicable	$ 155,231	$ 142,444
Common equity tier 1 capital to risk weighted assets, Ratio
Actual (as a percent)	9.75%	9.29%
Minimum Required for Capital Adequacy Purposes with Capital Conservation Buffer if applicable (as a percent)	7.00%	6.375%
Total capital to risk weighted assets, Amount
Actual at period end	$ 292,151	$ 282,126
Minimum Required for Capital Adequacy Purposes with Capital Conservation Buffer if applicable	$ 232,922	$ 220,648
Total capital to risk weighted assets, Ratio
Risk-based capital ratio (as a percent)	13.17%	12.63%
Minimum Required for Capital Adequacy Purposes with Capital Conservation Buffer if applicable (as a percent)	10.50%	9.875%
Tier 1 capital to risk weighted assets, Amount
Actual	$ 272,840	$ 263,125
Minimum Required for Capital Adequacy Purposes with Capital Conservation Buffer if applicable	$ 188,548	$ 175,960
Tier 1 capital to risk weighted assets, Ratio
Actual (as a percent)	12.30%	11.78%
Minimum Required for Capital Adequacy Purposes with Capital Conservation Buffer if applicable (as a percent)	8.50%	7.875%
Tier 1 capital to average assets, Amount
Actual	$ 272,840	$ 263,125
Minimum Required for Capital Adequacy Purposes with Capital Conservation Buffer if applicable	$ 104,536	$ 104,415
Tier 1 capital to average assets, Ratio
Tier 1 capital leverage ratio (as a percent)	10.44%	10.08%
Minimum Required for Capital Adequacy Purposes with Capital Conservation Buffer if applicable (as a percent)	4.00%	4.00%
Subsidiaries [Member]
Common equity tier 1 capital to risk weighted assets
Actual	$ 300,290	$ 295,599
Minimum Required for Capital Adequacy Purposes with Capital Conservation Buffer if applicable	154,561	141,791
Minimum Required to Be Well Capitalized	$ 143,521	$ 144,571
Common equity tier 1 capital to risk weighted assets, Ratio
Actual (as a percent)	13.60%	13.29%
Minimum Required for Capital Adequacy Purposes with Capital Conservation Buffer if applicable (as a percent)	7.00%	6.375%
Minimum Required to Be Well Capitalized (as a percent)	6.50%	6.50%
Total capital to risk weighted assets, Amount
Actual at period end	$ 319,601	$ 314,600
Minimum Required for Capital Adequacy Purposes with Capital Conservation Buffer if applicable	231,915	219,637
Minimum Required to Be Well Capitalized	$ 220,871	$ 222,417
Total capital to risk weighted assets, Ratio
Risk-based capital ratio (as a percent)	14.47%	14.14%
Minimum Required for Capital Adequacy Purposes with Capital Conservation Buffer if applicable (as a percent)	10.50%	9.875%
Minimum Required to Be Well Capitalized (as a percent)	10.00%	10.00%
Tier 1 capital to risk weighted assets, Amount
Actual	$ 300,290	$ 295,599
Minimum Required for Capital Adequacy Purposes with Capital Conservation Buffer if applicable	187,681	175,153
Minimum Required to Be Well Capitalized	$ 176,641	$ 177,934
Tier 1 capital to risk weighted assets, Ratio
Actual (as a percent)	13.60%	13.29%
Minimum Required for Capital Adequacy Purposes with Capital Conservation Buffer if applicable (as a percent)	8.50%	7.875%
Minimum Required to Be Well Capitalized (as a percent)	8.00%	8.00%
Tier 1 capital to average assets, Amount
Actual	$ 300,290	$ 295,599
Minimum Required for Capital Adequacy Purposes with Capital Conservation Buffer if applicable	104,087	104,084
Minimum Required to Be Well Capitalized	$ 130,108	$ 130,105
Tier 1 capital to average assets, Ratio
Tier 1 capital leverage ratio (as a percent)	11.54%	11.36%
Minimum Required for Capital Adequacy Purposes with Capital Conservation Buffer if applicable (as a percent)	4.00%	4.00%
Minimum Required to Be Well Capitalized (as a percent)	5.00%	5.00%

Regulatory & Capital Matters _2

Regulatory & Capital Matters - Dividend Restrictions and Deferrals (Details)	3 Months Ended
	Mar. 31, 2019
Dividend Restrictions and Deferrals
Number of previous years retained profit considered for dividend payment	2 years
Minimum capital requirements, minimum percentage required, 2016	0.625%
Minimum capital requirements, minimum percentage required, 2017	1.25%
Minimum capital requirements, minimum percentage required, 2018	1.875%
Minimum capital requirements, minimum percentage required, 2019 and thereafter	2.50%

Fair Value Measurements - Recur

Fair Value Measurements - Recurring (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Dec. 31, 2018
Assets:
Securities available-for-sale	$ 509,090	$ 509,090	$ 541,248
Mortgage servicing rights	6,715		7,357
US Treasury Securities [Member]
Assets:
Securities available-for-sale	3,960		3,923
US Government Corporations and Agencies Securities [Member]
Assets:
Securities available-for-sale	10,360		10,951
Mortgage Backed Securities, Issued by US Government Agencies [Member]
Assets:
Securities available-for-sale	15,306
US States and Political Subdivisions Debt Securities [Member]
Assets and liabilities measured at fair value on a recurring basis
Purchases	11,325	13,085
Assets:
Securities available-for-sale	281,172		274,067
Collateralized Mortgage Obligations [Member]
Assets:
Securities available-for-sale	64,330		64,429
Asset-backed Securities [Member]
Assets:
Securities available-for-sale	70,811		109,514
Collateralized loan obligations
Assets:
Securities available-for-sale	63,151		64,289
Fair Value, Inputs, Level 1 [Member]
Assets:
Securities available-for-sale	3,960		3,923
Fair Value, Inputs, Level 2 [Member]
Assets:
Securities available-for-sale	485,574		529,160
Loans held-for-sale	2,134		2,984
Liabilities:
Other liabilities	1,131		58
Fair Value, Inputs, Level 3 [Member]
Assets:
Securities available-for-sale	19,556	26,500	8,165
Mortgage servicing rights	6,715		7,357
Fair Value, Inputs, Level 3 [Member] | US States and Political Subdivisions Debt Securities [Member]
Assets:
Securities available-for-sale	19,600
Fair Value, Inputs, Level 3 [Member] | Collateralized Mortgage Obligations [Member]
Assets:
Securities available-for-sale		$ 2,100
Fair Value, Measurements, Recurring [Member]
Assets:
Securities available-for-sale			10,951
Total financial assets	518,848		552,420
Liabilities:
Total	742		672
Fair Value, Measurements, Recurring [Member] | Finite-Lived Intangible Assets [Member]
Assets:
Loans held-for-sale	2,134		2,984
Mortgage servicing rights	6,715		7,357
Fair Value, Measurements, Recurring [Member] | Interest Rate Swap [Member]
Liabilities:
Other liabilities	742		672
Fair Value, Measurements, Recurring [Member] | Interest Rate Swap [Member] | Finite-Lived Intangible Assets [Member]
Assets:
Other assets	742		672
Fair Value, Measurements, Recurring [Member] | Forward Contracts [Member] | Finite-Lived Intangible Assets [Member]
Assets:
Other assets	167		159
Fair Value, Measurements, Recurring [Member] | US Treasury Securities [Member]
Assets:
Securities available-for-sale			3,923
Fair Value, Measurements, Recurring [Member] | US Treasury Securities [Member] | Finite-Lived Intangible Assets [Member]
Assets:
Securities available-for-sale	3,960
Fair Value, Measurements, Recurring [Member] | US Government Corporations and Agencies Securities [Member] | Finite-Lived Intangible Assets [Member]
Assets:
Securities available-for-sale	10,360
Fair Value, Measurements, Recurring [Member] | Mortgage Backed Securities, Issued by US Government Agencies [Member] | Finite-Lived Intangible Assets [Member]
Assets:
Securities available-for-sale	15,306		14,075
Fair Value, Measurements, Recurring [Member] | US States and Political Subdivisions Debt Securities [Member] | Finite-Lived Intangible Assets [Member]
Assets:
Securities available-for-sale	281,172		274,067
Fair Value, Measurements, Recurring [Member] | Collateralized Mortgage Obligations [Member] | Finite-Lived Intangible Assets [Member]
Assets:
Securities available-for-sale	64,330		64,429
Fair Value, Measurements, Recurring [Member] | Asset-backed Securities [Member] | Finite-Lived Intangible Assets [Member]
Assets:
Securities available-for-sale	70,811		109,514
Fair Value, Measurements, Recurring [Member] | Collateralized loan obligations | Finite-Lived Intangible Assets [Member]
Assets:
Securities available-for-sale	63,151		64,289
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member]
Assets:
Total financial assets	3,960		3,923
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | US Treasury Securities [Member]
Assets:
Securities available-for-sale			3,923
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | US Treasury Securities [Member] | Finite-Lived Intangible Assets [Member]
Assets:
Securities available-for-sale	3,960
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]
Assets:
Securities available-for-sale			10,951
Total financial assets	488,617		532,975
Liabilities:
Total	742		672
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Finite-Lived Intangible Assets [Member]
Assets:
Loans held-for-sale	2,134		2,984
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Interest Rate Swap [Member]
Liabilities:
Other liabilities	742		672
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Interest Rate Swap [Member] | Finite-Lived Intangible Assets [Member]
Assets:
Other assets	742		672
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Forward Contracts [Member] | Finite-Lived Intangible Assets [Member]
Assets:
Other assets	167		159
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | US Government Corporations and Agencies Securities [Member] | Finite-Lived Intangible Assets [Member]
Assets:
Securities available-for-sale	10,360
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Mortgage Backed Securities, Issued by US Government Agencies [Member] | Finite-Lived Intangible Assets [Member]
Assets:
Securities available-for-sale	15,306		14,075
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | US States and Political Subdivisions Debt Securities [Member] | Finite-Lived Intangible Assets [Member]
Assets:
Securities available-for-sale	261,616		265,902
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Collateralized Mortgage Obligations [Member] | Finite-Lived Intangible Assets [Member]
Assets:
Securities available-for-sale	64,330		64,429
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Asset-backed Securities [Member] | Finite-Lived Intangible Assets [Member]
Assets:
Securities available-for-sale	70,811		109,514
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Collateralized loan obligations | Finite-Lived Intangible Assets [Member]
Assets:
Securities available-for-sale	63,151		64,289
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member]
Assets:
Total financial assets	26,271		15,522
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Finite-Lived Intangible Assets [Member]
Assets:
Mortgage servicing rights	6,715		7,357
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | US States and Political Subdivisions Debt Securities [Member] | Finite-Lived Intangible Assets [Member]
Assets:
Securities available-for-sale	$ 19,556		$ 8,165

Fair Value Measurements - Chang

Fair Value Measurements - Changes in Level 3 (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Changes in Level 3
Beginning balance		$ 2,268
Total gains or losses
Included in other comprehensive income		28
Purchases, issuances, sales, and settlements
Settlements		(213)
Ending balance		2,096
Changes in Level 3 (liabilities)
Included in earnings (or changes in net assets)		13
US States and Political Subdivisions Debt Securities [Member]
Changes in Level 3
Beginning balance	$ 8,165	14,261
Total gains or losses
Included in other comprehensive income	171	(699)
Purchases, issuances, sales, and settlements
Purchases	11,325	13,085
Settlements	(97)	(120)
Ending balance	19,556	26,527
Changes in Level 3 (liabilities)
Included in earnings (or changes in net assets)	(8)
Mortgage Servicing Rights [Member]
Changes in Level 3
Beginning balance	7,357	6,944
Total gains or losses
Included in earnings (or changes in net assets)		417
Purchases, issuances, sales, and settlements
Issuances	177	291
Settlements	(98)	(111)
Ending balance	6,715	$ 7,541
Changes in Level 3 (liabilities)
Included in earnings (or changes in net assets)	$ (721)

Fair Value Measurements - Quant

Fair Value Measurements - Quantitative and Qualitative Information (Details) $ in Thousands	Mar. 31, 2019USD ($)	Dec. 31, 2018USD ($)	Mar. 31, 2018USD ($)
Quantitative information about Level 3 fair value measurements
Mortgage servicing rights, fair value	$ 6,715	$ 7,357
Securities available-for-sale, at fair value	509,090	541,248	$ 509,090
Fair Value, Inputs, Level 3 [Member]
Quantitative information about Level 3 fair value measurements
Mortgage servicing rights, fair value	6,715	7,357
Securities available-for-sale, at fair value	19,556	8,165	26,500
US States and Political Subdivisions Debt Securities [Member]
Quantitative information about Level 3 fair value measurements
Securities available-for-sale, at fair value	281,172	274,067
US States and Political Subdivisions Debt Securities [Member] | Fair Value, Inputs, Level 3 [Member]
Quantitative information about Level 3 fair value measurements
Securities available-for-sale, at fair value	19,600
Collateralized Mortgage Obligations [Member]
Quantitative information about Level 3 fair value measurements
Securities available-for-sale, at fair value	$ 64,330	$ 64,429
Collateralized Mortgage Obligations [Member] | Fair Value, Inputs, Level 3 [Member]
Quantitative information about Level 3 fair value measurements
Securities available-for-sale, at fair value			$ 2,100
Measurement Input, Discount Rate | Mortgage Servicing Rights [Member] | Fair Value, Inputs, Level 3 [Member]
Quantitative information about Level 3 fair value measurements
Servicing Asset, Measurement Input		10.2
Measurement Input, Discount Rate | Mortgage Servicing Rights [Member] | Fair Value, Inputs, Level 3 [Member] | Minimum [Member]
Quantitative information about Level 3 fair value measurements
Servicing Asset, Measurement Input	10	10
Measurement Input, Discount Rate | Mortgage Servicing Rights [Member] | Fair Value, Inputs, Level 3 [Member] | Maximum [Member]
Quantitative information about Level 3 fair value measurements
Servicing Asset, Measurement Input	17	229.7
Measurement Input, Discount Rate | Mortgage Servicing Rights [Member] | Fair Value, Inputs, Level 3 [Member] | Weighted Average [Member]
Quantitative information about Level 3 fair value measurements
Servicing Asset, Measurement Input	10.1
Measurement Input, Constant Prepayment Rate | Mortgage Servicing Rights [Member] | Fair Value, Inputs, Level 3 [Member]
Quantitative information about Level 3 fair value measurements
Servicing Asset, Measurement Input		9.6
Measurement Input, Constant Prepayment Rate | Mortgage Servicing Rights [Member] | Fair Value, Inputs, Level 3 [Member] | Minimum [Member]
Quantitative information about Level 3 fair value measurements
Servicing Asset, Measurement Input	7	7
Measurement Input, Constant Prepayment Rate | Mortgage Servicing Rights [Member] | Fair Value, Inputs, Level 3 [Member] | Maximum [Member]
Quantitative information about Level 3 fair value measurements
Servicing Asset, Measurement Input	69	68.9
Measurement Input, Constant Prepayment Rate | Mortgage Servicing Rights [Member] | Fair Value, Inputs, Level 3 [Member] | Weighted Average [Member]
Quantitative information about Level 3 fair value measurements
Servicing Asset, Measurement Input	11.5
Fair Value, Measurements, Recurring [Member]
Quantitative information about Level 3 fair value measurements
Securities available-for-sale, at fair value		$ 10,951

Fair Value Measurements - Nonre

Fair Value Measurements - Nonrecurring (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2019	Dec. 31, 2018
Assets and liabilities measured at fair value
Valuation allowance	$ 222	$ 352
Carrying value of other real estate owned	6,365	7,175
Impaired Loans [Member]
Assets and liabilities measured at fair value
Valuation allowance		12,500
Fair Value, Measurements, Nonrecurring [Member]
Assets and liabilities measured at fair value
Total	14,973	19,338
Fair Value, Measurements, Nonrecurring [Member] | Impaired Loans [Member]
Assets and liabilities measured at fair value
Total	8,608	12,163
Valuation allowance	222	352,000,000
Increase (decrease) of specific allocations within the provision for loan losses	130	208,000,000
Fair Value, Measurements, Nonrecurring [Member] | Impaired Loans [Member] | Reported Value Measurement [Member]
Assets and liabilities measured at fair value
Total	8,800
Fair Value, Measurements, Nonrecurring [Member] | Other Real Estate Owned [Member]
Assets and liabilities measured at fair value
Total	6,365	7,175
Carrying value of other real estate owned	6,400	7,200
Outstanding balance	15,200	16,100
OREO Valuation allowance	7,900	8,000
OREO participations	937,000,000	900,000
Fair Value, Measurements, Nonrecurring [Member] | Fair Value, Inputs, Level 3 [Member]
Assets and liabilities measured at fair value
Total	14,973	19,338
Fair Value, Measurements, Nonrecurring [Member] | Fair Value, Inputs, Level 3 [Member] | Impaired Loans [Member]
Assets and liabilities measured at fair value
Total	8,608	12,163
Fair Value, Measurements, Nonrecurring [Member] | Fair Value, Inputs, Level 3 [Member] | Other Real Estate Owned [Member]
Assets and liabilities measured at fair value
Total	$ 6,365	$ 7,175

Fair Values of Financial Inst_3

Fair Values of Financial Instruments (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018	Mar. 31, 2018
Financial assets:
Cash and due from banks	$ 28,898	$ 38,599
Interest bearing deposits with financial institutions	11,438	16,636
Securities available-for-sale	509,090	541,248	$ 509,090
FHLBC and FRBC Stock	11,179	13,433
Bank-owned life insurance	62,002	61,544
Financial liabilities:
Noninterest bearing deposits	629,909	618,830
Other short-term borrowings	85,000	149,500
Junior subordinated debentures	57,698	57,686
Reported Value Measurement [Member]
Financial assets:
Cash and due from banks	28,898	38,599
Interest bearing deposits with financial institutions	11,438	16,636
Securities available-for-sale	509,090	541,248
FHLBC and FRBC Stock	11,179	13,433
Loans held for sale	2,134	2,984
Net loans	1,883,830	1,878,021
Accrued interest receivable	11,083	10,940
Financial liabilities:
Noninterest bearing deposits	629,909	618,830
Interest bearing deposits	1,493,603	1,497,843
Securities sold under repurchase agreements	42,361	46,632
Other short-term borrowings	85,000	149,500
Junior subordinated debentures	57,698	57,686
Senior notes	44,183	44,158
Note payable and other borrowings	13,207	15,379
Interest rate swap	1,131	58
Borrowing interest payable	764	281
Deposit interest payable	963	973
Estimate of Fair Value Measurement [Member]
Financial assets:
Cash and due from banks	28,898	38,599
Interest bearing deposits with financial institutions	11,438	16,636
Securities available-for-sale	509,090	541,248
FHLBC and FRBC Stock	11,179	13,433
Loans held for sale	2,134	2,984
Net loans	1,893,690	1,867,594
Accrued interest receivable	11,083	10,940
Financial liabilities:
Noninterest bearing deposits	629,909	618,830
Interest bearing deposits	1,491,384	1,495,614
Securities sold under repurchase agreements	42,361	46,632
Other short-term borrowings	85,000	149,500
Junior subordinated debentures	43,284	47,625
Senior notes	45,551	45,008
Note payable and other borrowings	13,207	15,379
Interest rate swap	1,131	58
Borrowing interest payable	764	281
Deposit interest payable	963	973
Fair Value, Inputs, Level 1 [Member]
Financial assets:
Cash and due from banks	28,898	38,599
Interest bearing deposits with financial institutions	11,438	16,636
Securities available-for-sale	3,960	3,923
Financial liabilities:
Noninterest bearing deposits	629,909	618,830
Junior subordinated debentures	34,044	32,989
Senior notes	45,551	45,008
Fair Value, Inputs, Level 2 [Member]
Financial assets:
Securities available-for-sale	485,574	529,160
FHLBC and FRBC Stock	11,179	13,433
Loans held for sale	2,134	2,984
Accrued interest receivable	11,083	10,940
Financial liabilities:
Interest bearing deposits	1,491,384	1,495,614
Securities sold under repurchase agreements	42,361	46,632
Other short-term borrowings	85,000	149,500
Junior subordinated debentures	9,240	14,636
Note payable and other borrowings	13,207	15,379
Interest rate swap	1,131	58
Borrowing interest payable	764	281
Deposit interest payable	963	973
Fair Value, Inputs, Level 3 [Member]
Financial assets:
Securities available-for-sale	19,556	8,165	$ 26,500
Net loans	$ 1,893,690	$ 1,867,594

Financial Instruments with Of_2

Financial Instruments with Off-Balance Sheet Risk and Derivative Transactions - Fair Value of Derivatives (Details)	3 Months Ended	12 Months Ended
	Mar. 31, 2019USD ($)item	Dec. 31, 2018USD ($)item
Financial Instruments with Off-Balance Sheet Risk and Derivative Transactions
Amount to be reclassified as a reduction to interest expense during the next twelve months	$ 75,000
Designated as Hedging Instrument [Member]
Financial Instruments with Off-Balance Sheet Risk and Derivative Transactions
Derivative liabilities designated as hedging instruments, fair value	$ 1,131,000	$ 58,000
Designated as Hedging Instrument [Member] | Interest Rate Products
Financial Instruments with Off-Balance Sheet Risk and Derivative Transactions
Derivative, number of transactions | item	1	1
Notional Amount	$ 25,774,000	$ 25,774,000
Derivated liabilities designated as hedging instruments, classified in other liabilities	1,131,000	58,000
Designated as Hedging Instrument [Member] | Interest Rate Products | OSBC Affiliates
Financial Instruments with Off-Balance Sheet Risk and Derivative Transactions
Notional Amount	25,800,000
Not Designated as Hedging Instrument [Member]
Financial Instruments with Off-Balance Sheet Risk and Derivative Transactions
Derivative assets not designated as hedging instruments, fair value	909,000	831,000
Total Derivative liabilities not designated as hedging instruments, fair value	$ 774,000	$ 698,000
Not Designated as Hedging Instrument [Member] | Interest Rate Products | Commercial Loan Customers
Financial Instruments with Off-Balance Sheet Risk and Derivative Transactions
Derivative, number of transactions | item	25	25
Notional Amount	$ 184,186,000	$ 188,931,000
Interest rate derivatives, derivative assets not designated as hedging instruments, classified in other assets	742,000	672,000
Interest rate derivatives, derivative not designated as hedging instruments, classified in other liabilities	$ 742,000	$ 672,000
Weighted average maturity	6 years 3 months 18 days	6 years 7 months 6 days
Not Designated as Hedging Instrument [Member] | Interest Rate Swap [Member]
Financial Instruments with Off-Balance Sheet Risk and Derivative Transactions
Cash collateral pledged with financial institutions, dollars	$ 273,000	$ 260,000
Investment securities pledged with financial institutions, dollars	$ 2,200,000	$ 0
Number of correspondent financial institutions where investment securities are pledged | item	1	1
Number of financial institutions where investment securities are required to be pledged | item	2
Not Designated as Hedging Instrument [Member] | Interest Rate Lock Commitments and Forward Contracts
Financial Instruments with Off-Balance Sheet Risk and Derivative Transactions
Derivative, number of transactions | item	107	63
Notional Amount	$ 33,185,000	$ 18,130,000
Interest rate derivatives, derivative assets not designated as hedging instruments, classified in other assets	$ 167,000	$ 159,000
Not Designated as Hedging Instrument [Member] | Other Contracts
Financial Instruments with Off-Balance Sheet Risk and Derivative Transactions
Derivative, number of transactions | item	3	3
Notional Amount	$ 18,101,000	$ 18,155,000
Interest rate derivatives, derivative not designated as hedging instruments, classified in other liabilities	$ 32,000	$ 26,000

Financial Instruments with Of_3

Financial Instruments with Off-Balance Sheet Risk and Derivative Transactions - Effect of Fair Value (Details) - USD ($)	Mar. 31, 2019	Sep. 30, 2017	Mar. 31, 2019
Financial Instruments with Off-Balance Sheet Risk and Derivative Transactions
Amount of Gain or (Loss) Reclassified from Accumulated OCI into Income	$ 1,100,000		$ 1,200,000
Amount of Gain or (Loss) Recognized in Income on Derivative	$ 5,000	$ 74,000

Financial Instruments with Of_4

Financial Instruments with Off-Balance Sheet Risk and Derivative Transactions - Balance Sheet Risk - Commitments (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Company's contractual commitments due to letters of credit
Total letters of credit	$ 14,403	$ 14,862
Fixed [Member]
Company's contractual commitments due to letters of credit
Total letters of credit	851	859
Variable [Member]
Company's contractual commitments due to letters of credit
Total letters of credit	13,552	14,003
Commitments to Extend Credit to Borrowers [Member]
Company's contractual commitments due to letters of credit
Total letters of credit	14,336	14,795
Commitments to Extend Credit to Borrowers [Member] | Fixed [Member]
Company's contractual commitments due to letters of credit
Total letters of credit	851	859
Commitments to Extend Credit to Borrowers [Member] | Variable [Member]
Company's contractual commitments due to letters of credit
Total letters of credit	13,485	13,936
Commitments to Extend Credit to Borrowers [Member] | Financial Standby Letter of Credit [Member]
Company's contractual commitments due to letters of credit
Total letters of credit	7,156	7,485
Commitments to Extend Credit to Borrowers [Member] | Financial Standby Letter of Credit [Member] | Fixed [Member]
Company's contractual commitments due to letters of credit
Total letters of credit	319	327
Commitments to Extend Credit to Borrowers [Member] | Financial Standby Letter of Credit [Member] | Variable [Member]
Company's contractual commitments due to letters of credit
Total letters of credit	6,837	7,158
Commitments to Extend Credit to Borrowers [Member] | Standby Letters of Credit [Member]
Company's contractual commitments due to letters of credit
Total letters of credit	410	397
Commitments to Extend Credit to Borrowers [Member] | Standby Letters of Credit [Member] | Variable [Member]
Company's contractual commitments due to letters of credit
Total letters of credit	410	397
Commitments to Extend Credit to Borrowers [Member] | Performance Guarantee [Member]
Company's contractual commitments due to letters of credit
Total letters of credit	6,770	6,913
Commitments to Extend Credit to Borrowers [Member] | Performance Guarantee [Member] | Fixed [Member]
Company's contractual commitments due to letters of credit
Total letters of credit	532	532
Commitments to Extend Credit to Borrowers [Member] | Performance Guarantee [Member] | Variable [Member]
Company's contractual commitments due to letters of credit
Total letters of credit	6,238	6,381
Commitments to Extend Credit Nonborrowers [Member] | Performance Guarantee [Member]
Company's contractual commitments due to letters of credit
Total letters of credit	67	67
Commitments to Extend Credit Nonborrowers [Member] | Performance Guarantee [Member] | Variable [Member]
Company's contractual commitments due to letters of credit
Total letters of credit	$ 67	$ 67