Mid Penn Bancorp (MPB) 10-Q 7 Aug 18 2018 Q2 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	6 Months Ended
	Jun. 30, 2018	Aug. 07, 2018
Document And Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Jun. 30, 2018
Document Fiscal Period Focus	Q2
Document Fiscal Year Focus	2,018
Trading Symbol	MPB
Entity Registrant Name	MID PENN BANCORP INC
Entity Central Index Key	879,635
Current Fiscal Year End Date	--12-31
Entity Filer Category	Accelerated Filer
Entity Common Stock, Shares Outstanding		8,450,893

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
ASSETS
Cash and due from banks	$ 25,436	$ 19,795
Interest-bearing balances with other financial institutions	4,775	3,028
Federal funds sold	9,196	691
Total cash and cash equivalents	39,407	23,514
Available for sale debt securities, at fair value	111,691	92,959
Investment securities available for sale, at fair value		93,465
Investment securities held to maturity, at amortized cost (fair value $150,016 and $100,483)	153,321	101,356
Loans held for sale	1,185	1,040
Loans and leases, net of unearned interest	1,036,479	910,404
Less: Allowance for loan and lease losses	(8,189)	(7,606)
Net loans and leases	1,028,290	902,798
Bank premises and equipment, net	23,905	16,168
Cash surrender value of life insurance	13,171	13,042
Restricted investment in bank stocks	2,765	4,384
Foreclosed assets held for sale	912	189
Accrued interest receivable	5,372	4,564
Deferred income taxes	2,540	1,888
Goodwill	23,107	3,918
Core deposit and other intangibles, net	4,878	434
Other assets	5,103	3,594
Total Assets	1,415,647	1,170,354
LIABILITIES & SHAREHOLDERS’ EQUITY
Deposits: Noninterest-bearing demand	207,013	163,714
Deposits: Interest-bearing demand	349,109	349,241
Deposits: Money Market	273,215	246,220
Deposits: Savings	171,845	62,770
Deposits: Time	235,336	201,623
Total Deposits	1,236,518	1,023,568
Short-term borrowings		34,611
Long-term debt	12,241	12,352
Subordinated debt	17,342	17,338
Accrued interest payable	1,186	645
Other liabilities	6,585	6,137
Total Liabilities	1,273,872	1,094,651
Shareholders' Equity:
Common stock, par value $1.00; authorized 10,000,000 shares; 6,124,517 and 4,242,216 shares issued and outstanding at June 30, 2018 and December 31, 2017, respectively	6,125	4,242
Additional paid-in capital	103,498	40,970
Retained earnings	35,386	32,565
Accumulated other comprehensive loss	(3,234)	(2,074)
Total Shareholders’ Equity	141,775	75,703
Total Liabilities and Shareholders' Equity	$ 1,415,647	$ 1,170,354

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Statement Of Financial Position [Abstract]
Investment securities held-to-maturity, fair value	$ 150,016	$ 100,483
Common Stock, Par Value	$ 1	$ 1
Common Stock, Shares Authorized	10,000,000	10,000,000
Common Stock, Shares, Issued	6,124,517	4,246,216
Common Stock, Shares, Outstanding	6,124,517	4,246,216

Consolidated Statements of Inco

Consolidated Statements of Income - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
INTEREST INCOME
Interest and fees on loans and leases	$ 12,073	$ 9,949	$ 23,410	$ 19,651
Interest on interest-bearing balances	17	5	26	7
Interest on federal funds sold	153	23	321	74
Interest and dividends on investment securities:
U.S. Treasury and government agencies	884	574	1,636	1,019
State and political subdivision obligations, tax-exempt	517	264	1,059	580
Other securities	76	64	248	107
Total Interest Income	13,720	10,879	26,700	21,438
INTEREST EXPENSE
Interest on deposits	1,997	1,277	3,777	2,481
Interest on short-term borrowings		13	12	13
Interest on long-term and subordinated debt	309	179	619	359
Total Interest Expense	2,306	1,469	4,408	2,853
Net Interest Income	11,414	9,410	22,292	18,585
PROVISION FOR LOAN AND LEASE LOSSES		100	125	225
Net Interest Income After Provision for Loan and Lease Losses	11,414	9,310	22,167	18,360
NONINTEREST INCOME
Net gain on sales of investment securities	4	12	102	20
Earnings from cash surrender value of life insurance	65	66	129	131
Net gain on sales of SBA loans	152	157	409	441
Other income	206	204	492	393
Total Noninterest Income	1,559	1,362	3,206	2,798
NONINTEREST EXPENSE
Salaries and employee benefits	4,542	4,159	9,606	8,389
Occupancy expense, net	870	593	1,667	1,241
Equipment expense	544	370	952	751
Pennsylvania bank shares tax expense	171	160	342	330
FDIC Assessment	93	194	321	388
Legal and professional fees	256	189	480	366
Marketing and advertising expense	230	131	419	238
Software licensing	512	370	1,026	699
Telephone expense	156	133	303	259
Loss on sale or write-down of foreclosed assets	1	6	3	88
Intangible amortization	248	24	496	53
Merger and acquisition expense	222	14	1,916	224
Other expenses	1,897	1,215	3,394	2,334
Total Noninterest Expense	9,742	7,558	20,925	15,360
INCOME BEFORE PROVISION FOR INCOME TAXES	3,231	3,114	4,448	5,798
Provision for income taxes	452	769	665	1,459
NET INCOME	$ 2,779	$ 2,345	$ 3,783	$ 4,339
PER COMMON SHARE DATA:
Basic and Diluted Earnings Per Common Share	$ 0.45	$ 0.55	$ 0.63	$ 1.02
Cash Dividends Paid	$ 0.15	$ 0.13	$ 0.40	$ 0.36
Income from Fiduciary Activities [Member]
NONINTEREST INCOME
Non-interest Income	$ 286	$ 200	$ 526	$ 396
Service Charges on Deposits [Member]
NONINTEREST INCOME
Non-interest Income	222	174	425	379
Mortgage Banking Income [Member]
NONINTEREST INCOME
Non-interest Income	205	225	361	416
ATM Debit Card Interchange Income [Member]
NONINTEREST INCOME
Non-interest Income	326	232	591	456
Merchant Services Income [Member]
NONINTEREST INCOME
Non-interest Income	$ 93	$ 92	$ 171	$ 166

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
		Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Statement Of Income And Comprehensive Income [Abstract]
Net income		$ 2,779	$ 2,345	$ 3,783	$ 4,339
Other comprehensive (loss) income:
Unrealized (losses) gains arising during the period on available-for-sale securities, net of income taxes impact, respectively		(333)	1,480	(2,156)	1,859
Reclassification adjustment for net gain on sales of available-for-sale securities included in net income, net of income taxes impact, respectively	[1]	(3)	(8)	(81)	(13)
Change in defined benefit plans, net of income taxes impact, respectively	[2]	1,043	(1)	1,042	(4)
Total other comprehensive (loss) income		707	1,471	(1,195)	1,842
Total comprehensive income		$ 3,486	$ 3,816	$ 2,588	$ 6,181
[1]	Amounts are included in net gain on sales of investment securities on the Consolidated Statements of Income as a separate element within total noninterest income.
[2]	Amounts are included in the computation of net periodic benefit cost and are included in salaries and employee benefits on the Consolidated Statements of Income as a separate element within total noninterest expense.

Consolidated Statements of Com6

Consolidated Statements of Comprehensive Income (Loss) (Parenthetical) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Statement Of Income And Comprehensive Income [Abstract]
Unrealized (losses) gains arising during the period on available for sale securities, tax	$ (88)	$ 763	$ (564)	$ 958
Reclassification adjustment for net gain on sales of available for sale securities included in net income, tax	(1)	(4)	(21)	(7)
Change in defined benefit plans, tax	$ 277	$ (1)	$ 277	$ (2)

Consolidated Statements of Chan

Consolidated Statements of Changes In Shareholders' Equity - USD ($) $ in Thousands	Total	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Loss [Member]
Balance at Dec. 31, 2016	$ 70,467	$ 4,233	$ 40,688	$ 28,399	$ (2,853)
Net income	4,339			4,339
Total other comprehensive loss, net of taxes	1,842				1,842
Employee Stock Purchase Plan	52	2	50
Common stock dividends declared	(1,101)			(1,101)
Restricted stock activity	37		37
Balance at Jun. 30, 2017	75,636	4,235	40,775	31,637	(1,011)
Balance at Dec. 31, 2017	75,703	4,242	40,970	32,565	(2,074)
Impact of adoption of new accounting standard (ASU 2016-01 [Member]) at Dec. 31, 2017	(9)			(44)	35
Balance at Dec. 31, 2017	75,694	4,242	40,970	32,521	(2,039)
Net income	3,783			3,783
Total other comprehensive loss, net of taxes	(1,195)				(1,195)
Common stock issued to Scottdale shareholders	64,181	1,879	62,302
Employee Stock Purchase Plan	56	2	54
Director Stock Purchase Plan	61	2	59
Common stock dividends declared	(918)			(918)
Restricted stock activity	113		113
Balance at Jun. 30, 2018	$ 141,775	$ 6,125	$ 103,498	$ 35,386	$ (3,234)

Consolidated Statements of Cha8

Consolidated Statements of Changes In Shareholders' Equity (Parenthetical) - shares	6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
Stock issued during period, shares, Scottdale shareholders	1,878,827
Stock issued during period shares, Director Stock Purchase Plans	1,819
Common Stock [Member]
Stock issued during period, shares, Employee Stock Purchase Plans	1,655	1,940

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
Operating Activities:
Net Income	$ 3,783	$ 4,339
Adjustments to reconcile net income to net cash provided by operating activities:
Provision for loan and lease losses	125	225
Depreciation	1,000	715
Amortization of intangibles	496	53
Net amortization (accretion) of security discounts/premiums	451	(742)
Gain on sales of investment securities	(102)	(20)
Earnings on cash surrender value of life insurance	(129)	(131)
Mortgage loans originated for sale	(22,596)	(23,234)
Proceeds from sales of mortgage loans originated for sale	22,812	23,240
Gain on sale of mortgage loans	(361)	(416)
SBA loans originated for sale	(5,056)	(5,605)
Proceeds from sales of SBA loans originated for sale	5,465	6,046
Gain on sale of SBA loans	(409)	(441)
Loss on disposal of property, plant, and equipment	64	26
Loss on sale or write-down of foreclosed assets	3	88
Stock compensation expense	113	37
Deferred income tax benefit (expense)	1,981	(65)
Decrease (increase) in accrued interest receivable	181	(63)
Increase in other assets	(1,242)	(193)
Increase in accrued interest payable	525	273
(Decrease) increase in other liabilities	(2,186)	381
Net Cash Provided By Operating Activities	4,918	4,513
Investing Activities:
Proceeds from the sale of available-for-sale securities	102,816	37,667
Proceeds from the maturity or call of available-for-sale securities	5,654	3,579
Purchases of available-for-sale securities	(21,533)	(13,827)
Proceeds from the maturity or call of held-to-maturity securities	11,625
Purchases of held-to-maturity securities	(57,850)	(72,684)
Net cash received from acquisition	65,025
Redemptions (purchases) of restricted investment in bank stock	1,716	(1,542)
Net increase in loans and leases	(55,732)	(48,078)
Proceeds from the sale of bank premises and equipment held for sale		2,201
Purchases of bank premises and equipment	(7,305)	(1,164)
Proceeds from the sale of foreclosed assets	169	136
Net Cash Provided by (Used In) Investing Activities	44,585	(93,712)
Financing Activities:
Net increase in deposits	2,969	52,095
Net (decrease) increase in short-term borrowings	(34,611)	21,468
Common stock dividends paid	(1,978)	(1,101)
Long-term debt repayment	(107)	(109)
Net Cash (Used In) Provided By Financing Activities	(33,610)	72,405
Net increase (decrease) in cash and cash equivalents	15,893	(16,794)
Cash and cash equivalents, beginning of period	23,514	45,973
Cash and cash equivalents, end of period	39,407	29,179
Supplemental Disclosures of Cash Flow Information:
Interest paid	3,867	2,580
Income taxes paid	1,425	2,190
Supplemental Noncash Disclosures:
Loan transfers to foreclosed assets held for sale	884
Assets Acquired:
Securities	114,039
Loans	70,769
Restricted stock	97
Property and equipment	1,496
Foreclosed assets	11
Deferred income taxes	1,050
Accrued interest receivable	989
Core deposit intangible	4,940
Other assets	266
Assets acquired	193,657
Liabilities Assumed:
Deposits	209,981
Accrued interest payable	16
Other liabilities	3,693
Liabilities assumed	213,690
Employee [Member]
Financing Activities:
Stock Purchase Plan	56	$ 52
Director [Member]
Financing Activities:
Stock Purchase Plan	$ 61

Basis of Presentation

Basis of Presentation	6 Months Ended
	Jun. 30, 2018
Organization Consolidation And Presentation Of Financial Statements [Abstract]
Basis of Presentation	(1) Basis of Presentation The accompanying consolidated financial statements include the accounts of Mid Penn Bancorp, Inc. (the “Company”) and its wholly-owned subsidiary, Mid Penn Bank (the “Bank”). All material intercompany accounts and transactions have been eliminated in consolidation. Certain information and disclosures normally included in consolidated financial statements prepared in accordance with accounting principles generally accepted in the United States of America (“GAAP”) have been condensed or omitted pursuant to the rules and regulations of the Securities and Exchange Commission (“SEC”). Mid Penn believes the information presented is not misleading and the disclosures are adequate. For comparative purposes, the June 30, 2017 and December 31, 2017 balances have been reclassified, when, and if necessary, to conform to the 2018 presentation. Such reclassifications had no impact on net income. The results of operations for interim periods are not necessarily indicative of operating results expected for the full year. In the opinion of management, all adjustments necessary for fair presentation of the periods presented have been reflected in the accompanying consolidated financial statements. All such adjustments are of a normal, recurring nature. These interim consolidated financial statements should be read in conjunction with the audited consolidated financial statements and notes thereto included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2017. On January 8, 2018, Mid Penn completed its acquisition of The Scottdale Bank & Trust Company (“Scottdale”), a Pennsylvania bank and trust company, through the merger of Scottdale with and into Mid Penn Bank pursuant to the previously announced Agreement and Plan of Merger, dated as of March 29, 2017, among Mid Penn, Mid Penn Bank and Scottdale. Refer to Note 2, Merger On January 16, 2018, Mid Penn entered into an Agreement and Plan of Merger with First Priority Financial Corp. (“First Priority”) pursuant to which First Priority would merge with and into Mid Penn (the “Merger”), with Mid Penn being the surviving corporation in the Merger. On July 31, 2018, Mid Penn completed its acquisition of First Priority. Refer to Note 14, Subsequent Events Mid Penn has evaluated events and transactions occurring subsequent to the balance sheet date of June 30, 2018, for items that should potentially be recognized or disclosed in these consolidated financial statements. The evaluation was conducted through the date these consolidated financial statements were issued.

Merger

Merger	6 Months Ended
	Jun. 30, 2018
Business Combinations [Abstract]
Merger	(2) Merger On January 8, 2018, The Scottdale Bank & Trust Company (“Scottdale”) merged with and into Mid Penn Bank, with Mid Penn Bank continuing as the surviving entity. Pursuant to the Merger Agreement, each share of Scottdale common stock issued and outstanding immediately prior to January 8, 2018 converted into the right to receive (i) $1,166 in cash without interest or (ii) 38.88 shares of Mid Penn common stock. As a result, Mid Penn issued 1,878,827 shares of Mid Penn common stock with an acquisition date fair value of approximately $64,181,000, based on the closing stock price of Mid Penn’s common stock on January 8, 2018 of $34.16, and cash of $2,792,000. Including an insignificant amount of cash paid in lieu of fractional shares, the fair value of total consideration paid was $66,973,000. The assets and liabilities of Scottdale were recorded on the consolidated balance sheet of the Company at their estimated fair value as of January 8, 2018, and their results of operations have been included in the consolidated income statement of the Company since such date. Scottdale has been fully integrated into Mid Penn, therefore the amount of revenue and earnings of Scottdale included in the consolidated income statement since the acquisition date is impracticable to provide. Included in the purchase price was goodwill of $19,189,000 and a core deposit intangible of $4,940,000. The core deposit intangible will be amortized over a ten-year period using a sum of the years’ digits basis. The goodwill will not be amortized, but will be measured annually for impairment or more frequently if circumstances require. Core deposit intangible amortization expense related to the Scottdale acquisition for the five years beginning 2018 through 2022 is estimated to be $898,000, $808,000, $719,000, $629,000, and $539,000 per year, respectively, and $1,347,000 in total for the five years after 2022. The allocation of the purchase price is as follows: (Dollars in thousands) Assets acquired: Cash and cash equivalents $ 67,817 Investment securities 114,039 Restricted stock 97 Loans 70,769 Goodwill 19,189 Core deposit intangible 4,940 Premises and equipment 1,496 Foreclosed assets 11 Deferred income taxes 1,050 Accrued interest receivable 989 Other assets 266 Total assets acquired 280,663 Liabilities assumed: Deposits 209,981 Accrued interest payable 16 Other liabilities 3,693 Total liabilities assumed 213,690 Consideration paid $ 66,973 Cash paid $ 2,792 Fair value of common stock issued 64,181 Accounting Standards Codification (“ASC”) Topic 805, Business Combinations (Dollars in thousands) Total purchase price $ 66,973 Net assets acquired: Cash and cash equivalents 67,817 Investment securities 114,039 Restricted stock 97 Loans 70,769 Core deposit intangible 4,940 Premises and equipment 1,496 Foreclosed assets 11 Deferred income taxes 1,050 Accrued interest receivable 989 Other assets 266 Deposits (209,981 ) Accrued interest payable (16 ) Other liabilities (3,693 ) 47,784 Goodwill $ 19,189 In general, factors contributing to goodwill recognized as a result of the Scottdale acquisition include expected cost savings from combined operations, opportunities to expand into several new markets, and growth and profitability potential from the repositioning of short-term investments into higher-yielding loans. The goodwill acquired as a result of the Scottdale acquisition is not tax deductible. The fair value of the financial assets acquired included loans receivable with a net amortized cost basis of $70,769,000. The table below illustrates the fair value adjustments made to the amortized cost basis in order to present a fair value of the loans acquired. (Dollars in thousands) Gross amortized cost basis at January 8, 2018 $ 71,809 Market rate adjustment 601 Credit fair value adjustment on pools of homogeneous loans (995 ) Credit fair value adjustment on impaired loans (646 ) Fair value of purchased loans at January 8, 2018 $ 70,769 The market rate adjustment represents the movement in market interest rates, irrespective of credit adjustments, compared to the contractual rates of the acquired loans. The credit adjustment made on pools of homogeneous loans represents the changes in credit quality of the underlying borrowers from loan inception to the acquisition date. The credit adjustment on impaired loans is derived in accordance with ASC 310-30-30 and represents the portion of the loan balance that has been deemed uncollectible based on our expectations of future cash flows for each respective loan. The information about the acquired Scottdale impaired loan portfolio as of January 8, 2018 is as follows: (Dollars in thousands) Contractually required principal and interest at acquisition $ 2,586 Contractual cash flows not expected to be collected (nonaccretable discount) (1,010 ) Expected cash flows at acquisition 1,576 Interest component of expected cash flows (accretable discount) (305 ) Fair value of acquired loans $ 1,271 The following table presents pro forma information as if the merger between Mid Penn Bank and Scottdale had been completed on January 1, 2017. The pro forma information does not necessarily reflect the results of operations that would have occurred had Mid Penn Bank merged with Scottdale at the beginning of 2017. The supplemental pro forma earnings for six months ended June 30, 2018 exclude both (i) adjustments to estimate the eight day impact of Scottdale due to immateriality and impracticality and (ii) $1,262,000 of merger related costs incurred in 2018 related to the Scottdale acquisition, which included approximately $518,000 of severance and retention bonus expenses. The results for the six months ended June 30, 2017 were adjusted to include $1,262,000 of merger related costs which would have been incurred if the merger had been completed January 1, 2017. The pro forma financial information does not include the impact of possible business model changes, nor does it consider any potential impacts of current market conditions or revenues, expense efficiencies, or other factors. (Dollars in thousands, except per share data) Three Months Ended June 30, Six Months Ended June 30, 2018 2017 2018 2017 Net interest income after loan loss provision $ 11,414 $ 10,883 $ 22,167 $ 1,448 Noninterest income 1,559 1,486 3,206 1,585 Noninterest expense 9,753 10,275 19,663 2,544 Net income 2,768 1,529 4,831 357 Net income per common share 0.45 0.25 0.79 0.06

Investment Securities

Investment Securities	6 Months Ended
	Jun. 30, 2018
Securities Financing Transactions Disclosures [Abstract]
Investment Securities	( 3 ) Investment Securities Securities to be held for indefinite periods, but not intended to be held to maturity, are classified as available-for-sale and carried at fair value. Securities held for indefinite periods include securities that management intends to use as part of its asset and liability management strategy and that may be sold in response to liquidity needs, changes in interest rates, resultant prepayment risk, pledging requirements, and other factors related to effective portfolio management. Securities to be held to maturity are carried at amortized cost. For available-for-sale debt securities, realized gains and losses on dispositions are based on the net proceeds and the amortized cost of the securities sold, using the specific identification method. Unrealized gains and losses on debt securities are based on the difference between the amortized cost and fair value of each security as of the respective reporting date. Unrealized gains and losses are credited or charged to other comprehensive income, whereas realized gains and losses flow through Mid Penn’s consolidated statements of income for the respective period. ASC Topic 320, Investments – Debt and Equity Securities In instances when a determination is made that other-than-temporary impairment exists but the investor does not intend to sell the debt security and it is not more likely than not that it will be required to sell the debt security prior to its anticipated recovery, this guidance changes the presentation and amount of the other-than-temporary impairment recognized in the income statement. The other-than-temporary impairment is separated into (a) the amount of the total other-than-temporary impairment related to a decrease in cash flows expected to be collected from the debt security (the credit loss) and (b) the amount of the total other-than-temporary impairment related to all other factors. The amount of the total other-than-temporary impairment related to the credit loss is recognized in earnings. The amount of the total other-than-temporary impairment related to all other factors is recognized in other comprehensive income. Mid Penn had no securities considered by management to be other-than-temporarily impaired as of June 30, 2018, December 31, 2017, or June 30, 2017, and did not record any securities impairment charges in the respective periods ended on these dates. Mid Penn does not consider the securities with unrealized losses on the respective dates to be other-than-temporarily impaired as the unrealized losses were deemed to relate to changes in interest rates, and not erosion of credit quality. Beginning January 1, 2018, upon adoption of ASU 2016-01, equity securities with readily determinable fair values are stated at fair value within other assets on the balance sheet, with realized and unrealized gains and losses reported in other expense on the income statement. For periods prior to January 1, 2018, equity securities were classified as available-for-sale and stated at fair value within investment securities available-for-sale on the balance sheet, with unrealized gains and losses reported as a separate component of accumulated other comprehensive loss, net of tax. Equity securities without readily determinable fair values are recorded at cost less any impairment. The amortized cost, fair value, and unrealized gains and losses on investment securities at June 30, 2018 and December 31, 2017 are as follows: (Dollars in thousands) Amortized Unrealized Unrealized Fair Cost Gains Losses Value June 30, 2018 Available-for-sale debt securities: U.S. Treasury and U.S. government agencies $ 40,597 $ — $ 2,257 $ 38,340 Mortgage-backed U.S. government agencies 43,713 1 1,288 42,426 State and political subdivision obligations 31,551 3 1,980 29,574 Corporate debt securities 1,350 1 — 1,351 Total available-for-sale debt securities 117,211 5 5,525 111,691 Held-to-maturity debt securities: U.S. Treasury and U.S. government agencies 10,985 — 201 10,784 Mortgage-backed U.S. government agencies 66,512 4 1,649 64,867 State and political subdivision obligations 75,824 57 1,516 74,365 Total held-to-maturity debt securities 153,321 61 3,366 150,016 Total $ 270,532 $ 66 $ 8,891 $ 261,707 (Dollars in thousands) Amortized Unrealized Unrealized Fair Cost Gains Losses Value December 31, 2017 Available-for-sale debt securities: U.S. Treasury and U.S. government agencies $ 40,125 $ — $ 1,395 $ 38,730 Mortgage-backed U.S. government agencies 26,398 2 569 25,831 State and political subdivision obligations 27,775 7 739 27,043 Corporate debt securities 1,350 5 — 1,355 Total available-for-sale debt securities 95,648 14 2,703 92,959 Available-for-sale equity securities: Equity securities 550 — 44 506 Total available-for-sale equity securities 550 — 44 506 Held-to-maturity debt securities: U.S. Treasury and U.S. government agencies 10,984 — 90 10,894 Mortgage-backed U.S. government agencies 53,472 — 523 52,949 State and political subdivision obligations 36,900 41 301 36,640 Total held-to-maturity debt securities 101,356 41 914 100,483 Total $ 197,554 $ 55 $ 3,661 $ 193,948 Estimated fair values of debt securities are based on quoted market prices, where applicable. If quoted market prices are not available, fair values are based on quoted market prices of comparable instruments, adjusted for differences between the quoted instruments and the instruments being valued. Please refer to Note 5, Fair Value Measurement Equity securities consist of Community Reinvestment Act funds and, as of June 30, 2018 and December 31, 2017, Mid Penn had $492,000 and $506,000, respectively, in equity securities recorded at fair value. Prior to January 1, 2018, equity securities were stated at fair value with unrealized gains and losses reported as a separate component of accumulated other comprehensive loss, net of tax. At December 31, 2017, net unrealized gains of $44,000 had been recognized in accumulated other comprehensive loss. On January 1, 2018, with the adoption of ASU 2016-01, these unrealized gains and losses were reclassified out of accumulated other comprehensive loss and into retained earnings and subsequent changes in fair value are now recognized in net income and the fair value of securities is presented in other assets. No equity securities were sold during the three and six months ended June 30, 2018. Investment securities having a fair value of $158,363,000 at June 30, 2018 and $141,465,000 at December 31, 2017 were pledged to secure public deposits, some trust account holdings, and certain other borrowings. Gross realized gains and losses on sales of available-for-sale debt securities for the three and six months ended June 30, 2018 and 2017 are shown in the table below. (Dollars in thousands) Three Months Ended June 30, Six Months Ended June 30, 2018 2017 2018 2017 Realized gains $ 11 $ 77 $ 111 $ 200 Realized losses (7 ) (65 ) (9 ) (180 ) Net gains $ 4 $ 12 $ 102 $ 20 The following tables present gross unrealized losses and fair value of debt security investments aggregated by investment category and length of time that individual securities have been in a continuous unrealized loss position at June 30, 2018 and December 31, 2017. (Dollars in thousands) Less Than 12 Months 12 Months or More Total Number Number Number of Fair Unrealized of Fair Unrealized of Fair Unrealized June 30, 2018 Securities Value Losses Securities Value Losses Securities Value Losses Available-for-sale debt securities: U.S. Treasury and U.S. government agencies 3 $ 4,453 $ 231 19 $ 33,887 $ 2,026 22 $ 38,340 $ 2,257 Mortgage-backed U.S. government agencies 15 23,474 407 15 18,916 881 30 42,390 1,288 State and political subdivision obligations 15 8,094 356 41 18,486 1,624 56 26,580 1,980 Total temporarily impaired available-for-sale debt securities 33 36,021 994 75 71,289 4,531 108 107,310 5,525 Held-to-maturity debt securities: U.S. Treasury and U.S. government agencies 3 8,793 191 1 1,991 10 4 10,784 201 Mortgage-backed U.S. government agencies 37 54,276 1,324 7 8,825 325 44 63,101 1,649 State and political subdivision obligations 134 53,362 1,461 3 1,486 55 137 54,848 1,516 Total temporarily impaired held-to-maturity debt securities 174 116,431 2,976 11 12,302 390 185 128,733 3,366 Total 207 $ 152,452 $ 3,970 86 $ 83,591 $ 4,921 293 $ 236,043 $ 8,891 (Dollars in thousands) Less Than 12 Months 12 Months or More Total Number Number Number of Fair Unrealized of Fair Unrealized of Fair Unrealized December 31, 2017 Securities Value Losses Securities Value Losses Securities Value Losses Available-for-sale securities: U.S. Treasury and U.S. government agencies 3 $ 5,008 $ 184 18 $ 33,722 $ 1,211 21 $ 38,730 $ 1,395 Mortgage-backed U.S. government agencies 4 5,267 75 15 20,497 494 19 25,764 569 State and political subdivision obligations 11 6,144 102 40 19,091 637 51 25,235 739 Equity securities 0 — — 1 506 44 1 506 44 Total temporarily impaired available-for-sale securities 18 $ 16,419 $ 361 74 $ 73,816 $ 2,386 92 $ 90,235 $ 2,747 Held-to-maturity securities: U.S. Treasury and U.S. government agencies 0 — — 4 10,894 90 4 10,894 90 Mortgage-backed U.S. government agencies 0 — — 35 52,949 523 35 52,949 523 State and political subdivision obligations 0 — — 77 29,976 301 77 29,976 301 Total temporarily impaired held to maturity securities 0 — — 116 93,819 914 116 93,819 914 Total 18 $ 16,419 $ 361 190 $ 167,635 $ 3,300 208 $ 184,054 $ 3,661 Management evaluates securities for other-than-temporary impairment on at least a quarterly basis, and more frequently when economic or market concerns warrant such additional evaluation. Consideration is given to the length of time and the extent to which the fair value has been less than amortized cost and the financial condition and near term prospects of the issuer. In addition, for debt securities, Mid Penn considers (a) whether management has the intent to sell the security, (b) it is more likely than not that management will be required to sell the security prior to its anticipated recovery, and (c) whether management expects to recover the entire amortized cost basis. For equity securities, management considers the intent and ability to hold securities until recovery of unrealized losses. The majority of the investment portfolio is comprised of securities issued by U.S. government agencies and state and political subdivision obligations. For the investment securities with an unrealized loss, Mid Penn has concluded that, based on its analysis, the unrealized losses were primarily caused by the movement of interest rates and not due to an erosion of credit quality of the underlying issuers. At both June 30, 2018 and December 31, 2017, the majority of available-for-sale securities and held-to-maturity securities in an unrealized loss position were obligations of state and political subdivisions, U.S. Treasury and agency securities, and mortgage-backed U.S. government agencies. The table below illustrates the maturity distribution of investment securities at amortized cost and fair value as of June 30, 2018. (Dollars in thousands) Available-for-sale Held-to-maturity Amortized Fair Amortized Fair June 30, 2018 Cost Value Cost Value Due in 1 year or less $ 1,460 $ 1,460 $ 2,001 $ 1,991 Due after 1 year but within 5 years 18,711 18,050 11,705 11,494 Due after 5 years but within 10 years 43,730 41,041 71,195 69,796 Due after 10 years 9,597 8,714 1,909 1,868 73,498 69,265 86,810 85,149 Mortgage-backed securities 43,713 42,426 66,511 64,867 $ 117,211 $ 111,691 $ 153,321 $ 150,016

Loans and Allowance for Loan an

Loans and Allowance for Loan and Lease Losses	6 Months Ended
	Jun. 30, 2018
Accounts Notes Loans And Financing Receivable Gross Allowance And Net [Abstract]
Loans and Allowance for Loan and Lease Losses	(4 ) Loans and Allowance for Loan and Lease Losses Loans receivable that management has the intent and ability to hold for the foreseeable future or until maturity or payoff are stated at their outstanding unpaid principal balances, net of an allowance for loan losses and any deferred fees or costs. Interest income is accrued on the unpaid principal balance. Loan origination fees, net of certain direct origination costs, are deferred and recognized as an adjustment of the yield (interest income) of the related loans, generally being amortized over the contractual life of the loan. Premiums and discounts on purchased loans are amortized as adjustments to interest income using the effective yield method. The loan portfolio is segmented into commercial and consumer loans. Commercial loans consist of the following classes: commercial and industrial, commercial real estate, commercial real estate-construction and lease financing. Consumer loans consist of the following classes: residential mortgage loans, home equity loans and other consumer loans. For all classes of loans, the accrual of interest generally is discontinued when the contractual payment of principal or interest has become 90 days or more past due, or management has serious doubts about further collectability of principal or interest even though the loan is currently performing. A loan past due 90 days or more may remain on accrual status if it is in the process of collection and is either guaranteed or well secured. When a loan is placed on nonaccrual status, unpaid interest is credited to income. Interest received on nonaccrual loans, including impaired loans, is either applied against principal or reported as interest income, according to management’s judgment as to the collectability of principal. Nonaccrual loans may be restored to accrual status when the obligation is brought current, has performed in accordance with the contractual terms for a reasonable period of time (generally, at least nine consecutive months) and the ultimate collectability of the total contractual principal and interest is no longer in doubt. The past due status of all classes of loans receivable is determined based on contractual due dates for loan payments. Commercial and Industrial Mid Penn originates commercial and industrial loans. Most of the Bank’s commercial and industrial loans have been extended to finance local and regional businesses and include short-term loans to finance machinery and equipment purchases, inventory, and accounts receivable. Commercial loans also involve the extension of revolving credit for a combination of equipment acquisitions and working capital in expanding companies. The maximum term for loans extended on machinery and equipment is based on the projected useful life of such machinery and equipment. Generally, the maximum term on non-mortgage lines of credit is one year. The loan-to-value ratio on such loans and lines of credit generally may not exceed 80 percent of the value of the collateral securing the loan. The Bank’s commercial business lending policy includes credit file documentation and analysis of the borrower’s character, capacity to repay the loan, the adequacy of the borrower’s capital and collateral, as well as an evaluation of conditions affecting the borrower. Analysis of the borrower’s past, present, and future cash flows is also an important aspect of the Bank’s current credit analysis. Nonetheless, such loans are believed to carry higher credit risk than other extensions of credit. Commercial and industrial loans typically are made on the basis of the borrower’s ability to make repayment from the cash flow of the borrower’s business. As a result, the availability of funds for the repayment of commercial business loans may be substantially dependent on the success of the business itself, which, in turn, is likely to be dependent upon the general economic environment. Mid Penn’s commercial and industrial loans are usually, but not always, secured by business assets and personal guarantees. However, the collateral securing the loans may depreciate over time, may be difficult to appraise, and may fluctuate in value based on the success of the business. Commercial Real Estate and Commercial Real Estate - Construction Commercial real estate and commercial real estate construction loans generally present a higher level of risk than loans secured by one-to-four family residences. This greater risk is due to several factors, including the concentration of principal in a limited number of loans and borrowers, the effect of general economic conditions on income producing properties, and the increased difficulty of evaluating and monitoring these types of loans. In addition, the repayment of loans secured by commercial real estate is typically dependent upon the successful operation of the related real estate project. If the cash flow from the project is reduced, the borrower’s ability to repay the loan may be impaired. Residential Mortgage Mid Penn offers a wide array of residential mortgage loans for both permanent structures and those under construction. The Bank’s residential mortgage originations are secured primarily by properties located in its primary market and surrounding areas. Residential mortgage loans have terms up to a maximum of 30 years and with loan-to-value ratios up to 100 percent of the lesser of the appraised value of the security property or the contract price. Private mortgage insurance is generally required in an amount sufficient to reduce the Bank’s exposure to at or below the 85 percent loan to value level. Residential mortgage loans generally do not include prepayment penalties. In underwriting residential mortgage loans, the Bank evaluates both the borrower’s ability to make monthly payments and the value of the property securing the loan. Most properties securing real estate loans made by Mid Penn are appraised by independent fee appraisers. The Bank generally requires borrowers to obtain title insurance and fire and property insurance (including flood insurance, if necessary) in an amount not less than the amount of the loan. Real estate loans originated by the Bank generally contain a “due on sale” clause allowing the Bank to declare the unpaid principal balance due and payable upon the sale of the security property. The Bank underwrites residential mortgage loans to the standards established by the secondary mortgage market, i.e., Fannie Mae, Ginnie Mae, Freddie Mac, or Pennsylvania Housing Finance Agency standards, with the intention of selling the majority of residential mortgages originated into the secondary market. In the event that the facts and circumstances surrounding a residential mortgage application do not meet all underwriting conditions of the secondary mortgage market, the Bank will evaluate the failed conditions and evaluate the potential risk of holding the residential mortgage in the Bank’s portfolio rather than rejecting the loan request. In the event that the loan is held in the Bank’s portfolio, the interest rate on the residential mortgage would be increased to compensate for the added portfolio risk. Consumer, Including Home Equity Mid Penn offers a variety of secured consumer loans, including home equity, automobile, and deposit secured loans. In addition, the Bank offers other secured and unsecured consumer loans. Most consumer loans are originated in Mid Penn’s primary market and surrounding areas. The largest component of Mid Penn’s consumer loan portfolio consists of fixed rate home equity loans and variable rate home equity lines of credit. Substantially all home equity loans and lines of credit are secured by junior lien mortgages on principal residences. The Bank will lend amounts, which, together with all prior liens, typically may be up to 85 percent of the appraised value of the property securing the loan. Home equity term loans may have maximum terms up to 20 years, while home equity lines of credit generally have maximum terms of five years. Consumer loan terms vary according to the type and value of collateral, length of contract and creditworthiness of the borrower. The underwriting standards employed by the Bank for consumer loans include an application, a determination of the applicant’s payment history on other debts, and an assessment of ability to meet existing obligations and payments on the proposed loan. Although creditworthiness of the applicant is a primary consideration, the underwriting process also includes a comparison of the value of the collateral, if any, in relation to the proposed loan amount. Consumer loans may entail greater credit risk than do residential mortgage loans, particularly in the case of consumer loans which are unsecured or are secured by rapidly depreciable assets, such as automobiles or recreational equipment. In such cases, any repossessed collateral for a defaulted consumer loan may not provide an adequate source of repayment of the outstanding loan balance. In addition, consumer loan collections are dependent on the borrower’s continuing financial stability, and thus are more likely to be affected by adverse personal circumstances. Furthermore, the application of various federal and state laws, including bankruptcy and insolvency laws, may limit the amount that can be recovered on such loans. Junior liens inherently have more credit risk by virtue of the fact that another financial institution may have a higher security position in the case of foreclosure liquidation of collateral to extinguish the debt. Generally, foreclosure actions could become more prevalent if the real estate market weakens and property values deteriorate. Allowance for Loan and Lease Losses The allowance for credit losses (“allowance”) consists of (i) the allowance for loan and lease losses, and (ii) the reserve for unfunded lending commitments. The allowance for loan and lease losses represents management’s estimate of losses inherent in the loan portfolio as of the balance sheet date and is recorded as a reduction to loans. The reserve for unfunded lending commitments represents management’s estimate of losses inherent in its unfunded loan commitments and is recorded in other liabilities on the consolidated balance sheet. The reserve for unfunded lending commitments was $108,000 at June 30, 2018 and $105,000 at December 31, 2017. The allowance is increased by the provision for loan and lease losses, and decreased by charge-offs, net of recoveries. Loans deemed to be uncollectible are charged against the allowance, and subsequent recoveries, if any, are credited to the allowance. All, or part, of the principal balance of loans are charged off to the allowance as soon as it is determined that the repayment of all, or part, of the principal balance is highly unlikely. Non-residential consumer loans are generally charged off no later than 120 days past due on a contractual basis, earlier in the event of bankruptcy, or if there is an amount deemed uncollectible. Because all identified losses are immediately charged off, no portion of the allowance is restricted to any individual loan or groups of loans, and the entire allowance is available to absorb any and all loan losses. The allowance is maintained at a level considered by management to be adequate to provide for losses that can be reasonably anticipated. Management performs a monthly evaluation of the adequacy of the allowance. The allowance is based on Mid Penn’s past loan loss experience, known and inherent risks in the portfolio, adverse situations that may affect the borrower’s ability to repay, the estimated value of any underlying collateral, composition of the loan portfolio, current economic conditions, and other relevant factors. This evaluation is inherently subjective as it requires material estimates that may be susceptible to significant revision as more information becomes available. The allowance consists of specific, general and unallocated components. The specific component relates to loans that are classified as impaired. For loans that are classified as impaired, an allowance is established when the discounted cash flows, collateral value, or observable market price of the impaired loan is lower than the carrying value of that loan. The general component covers pools of loans by loan class including commercial loans not considered impaired, as well as smaller balance homogeneous loans, such as residential real estate, home equity and other consumer loans. These pools of loans are evaluated for loss exposure based upon historical loss rates for each of these categories of loans, adjusted for qualitative factors. These qualitative risk factors include changes in economic conditions, fluctuations in loan quality measures, changes in collateral values, changes in the experience of the lending staff and loan review systems, changes in lending policies and procedures (including underwriting standards), changes in the mix and volume of loans originated, the effect of other external factors such as competition and legal and regulatory requirements on the level of estimated credit losses in the existing loan portfolio, shifting industry or portfolio concentrations, and other relevant factors. Each factor is assigned a value to reflect improving, stable or declining conditions based on management’s best judgment using relevant information available at the time of the evaluation. Adjustments to the factors are supported through documentation of changes in conditions in a narrative accompanying the allowance for loan loss calculation. The unallocated component of the allowance for loan and lease losses covers several considerations that are not specifically measureable through either the specific and general components. For example, we believe that we could face increasing credit risks and uncertainties, not yet reflected in recent historical losses or qualitative factor assessments, associated with unpredictable changes in economic growth or business conditions in our markets or for certain industries in which we have commercial loan borrowers, or unanticipated stresses to the values of real estate held as collateral. Any or all of these additional issues can adversely affect our borrowers’ ability to timely repay their loans. Mid Penn generally considers a commercial loan (consisting of commercial and industrial, commercial real estate, commercial real estate-construction, and lease financing loan classes) to be impaired when it becomes 90 days or more past due and not in the process of collection or sooner when it is probable that Mid Penn will be unable to collect all contractual principal and interest due. This methodology assumes the borrower cannot or will not continue to make additional payments. At that time the loan would generally be considered collateral dependent as the discounted cash flow method would generally indicate no operating income available for evaluating the collateral position; therefore, most impaired loans are deemed to be collateral dependent. In addition, Mid Penn’s rating system assumes any loans classified as nonaccrual, included in the substandard rating, to be impaired, and most of these loans are considered collateral dependent; therefore, most of Mid Penn’s impaired loans, whether reporting a specific allocation or not, are considered collateral dependent. Mid Penn evaluates loans for charge-off on a monthly basis. Policies that govern the recommendation for charge-off are unique to the type of loan being considered. Commercial loans rated as substandard nonaccrual or lower will first have a collateral evaluation completed in accordance with the guidance on impaired loans. Once the collateral evaluation has been completed, a specific allocation of allowance is made based upon the results of the evaluation. The remaining balance remains a nonperforming loan with the original terms and interest rate intact (not restructured). In the event the loan is unsecured, the loan would have been charged-off at the recognition of impairment. Commercial real estate loans rated as impaired will also have an initial collateral evaluation completed in accordance with the guidance on impaired loans. An updated real estate valuation is ordered and the collateral evaluation is modified to reflect any variations in value. A specific allocation of allowance is made for any anticipated collateral shortfall. The remaining balance remains a nonperforming loan with the original terms and interest rate intact (not restructured). The process of charging off a residential mortgage loan begins when a loan becomes delinquent for 90 days and is not in the process of collection. The existing appraisal is reviewed and a lien search is obtained to determine lien position and any instances of intervening liens. A new appraisal of the property will be ordered if deemed necessary by management and a collateral evaluation is completed. The loan will then be charged down to the value indicated in the evaluation. Consumer loans (including home equity loans and other consumer loans) are recommended for charge-off after reaching delinquency of 90 days and the loan is not well-secured or otherwise not probable for collection. The collateral shortfall of the consumer loan is recommended for charge-off at this point. As noted above, Mid Penn assesses a specific allocation for commercial loans and commercial real estate loans. The remaining balance remains a nonperforming loan with the original terms and interest rate intact (not restructured). In addition, Mid Penn takes a preemptive step when any commercial loan becomes classified under its internal classification system. A preliminary collateral evaluation, in accordance with the guidance on impaired loans, is prepared using the existing collateral information in the loan file. This process allows Mid Penn to review both the credit and documentation files to determine the status of the information needed to make a collateral evaluation. This collateral evaluation is preliminary, but allows Mid Penn to determine if any potential collateral shortfalls exist. It is Mid Penn’s policy to obtain updated third party valuations on all impaired loans collateralized by real estate as soon as practically possible following the credit being classified as substandard nonaccrual. Prior to receipt of the updated real estate valuation, Mid Penn will use any existing real estate valuation to determine any potential allowance issues; however, no allowance recommendation will be made until such time Mid Penn is in receipt of the updated valuation. The Asset Recovery department employs an electronic tracking system to monitor the receipt of and need for updated appraisals. To date, there have been no material time lapses noted with the above processes. In some instances Mid Penn is not holding real estate as collateral and is relying on business assets (personal property) for repayment. In these circumstances a collateral inspection is performed by Mid Penn personnel to determine an estimated value. The value is based on net book value, as provided by the financial statements, and discounted accordingly based on determinations made by management. Occasionally, Mid Penn will employ an outside service to provide a fair estimate of value based on auction sales or private sales. Management reviews the estimates of these third parties and discounts them accordingly based on management’s judgment, if deemed necessary. For impaired loans with no valuation allowance required, Mid Penn’s practice of obtaining independent third party market valuations on the subject property as soon as practically possible following the credit being placed on nonaccrual status sometimes indicates that the loan to value ratio is sufficient to obviate the need for a specific allocation in spite of significant deterioration in real estate values in Mid Penn’s primary market area. These circumstances are determined on a case by case analysis of the impaired loans. Mid Penn actively monitors the values of collateral on impaired loans. This monitoring may require the modification of collateral values over time or changing circumstances by some factor, either positive or negative, from the original values. All collateral values will be assessed by management at least every 12 months for possible revaluation by an independent third party. Large groups of smaller balance homogeneous loans are collectively evaluated for impairment. Accordingly, Mid Penn does not separately identify individual residential mortgage loans, home equity loans and other consumer loans for impairment disclosures, unless such loans are the subject of a troubled debt restructuring agreement. Loans whose terms are modified are classified as troubled debt restructurings if the borrowers have been granted concessions and it is deemed that those borrowers are experiencing financial difficulty. Concessions granted under a troubled debt restructuring generally involve a temporary reduction in interest rate or an extension of a loan’s stated maturity date. Nonaccrual troubled debt restructurings are restored to accrual status if principal and interest payments, under the modified terms, are current for nine consecutive months after modification. Loans classified as troubled debt restructurings are designated as impaired. The allowance calculation methodology includes further segregation of loan classes into risk rating categories. The borrower’s overall financial condition, repayment sources, guarantors, and value of collateral, if appropriate, are evaluated annually for commercial loans or when credit deficiencies arise, such as delinquent loan payments. Credit quality risk ratings include regulatory classifications of special mention, substandard, doubtful, and loss. Loans criticized as special mention have potential weaknesses that deserve management’s close attention. If uncorrected, the potential weaknesses may result in deterioration of the repayment prospects. Loans classified substandard have a well-defined weakness or weaknesses that jeopardize the liquidation of the debt. They include loans that are inadequately protected by the current sound net worth and paying capacity of the obligor or of the collateral pledged, if any. Loans classified doubtful have all the weaknesses inherent in loans classified substandard with the added characteristic that collection or liquidation in full, on the basis of current conditions and facts, is highly improbable. Loans classified as a loss are considered uncollectible and are charged to the allowance for loan losses. Any loans not classified as noted above are rated pass. In addition, Federal and State regulatory agencies, as an integral part of their examination process, periodically review the Bank’s allowance and may require the Bank to recognize additions to the allowance based on their judgments about information available to them at the time of their examination, which may not be currently available to management. Based on management’s comprehensive analysis of the loan portfolio, management believes the current level of the allowance for loan losses is adequate. Acquired Loans Loans that Mid Penn acquires in connection with business combinations are recorded at fair value with no carryover of the existing related allowance for loan losses. Fair value of the loans involves estimating the amount and timing of principal and interest cash flows expected to be collected on the loans and discounting those cash flows at a market rate of interest. The excess of cash flows expected at acquisition over the estimated fair value is referred to as the accretable discount and is recognized into interest income over the remaining life of the loan. The difference between contractually required payments at acquisition and the cash flows expected to be collected at acquisition is referred to as the nonaccretable discount. These loans are accounted for under the ASC 310-30, Loans and Debt Securities Acquired with Deteriorated Credit Quality. Loans acquired through business combinations that meet the specific criteria of ASC 310-30 are individually evaluated each period to analyze expected cash flows. To the extent that the expected cash flows of a loan have decreased due to credit deterioration, Mid Penn establishes an allowance. Loans acquired through business combinations that do not meet the specific criteria of ASC 310-30 are accounted for under ASC 310-20. These loans are initially recorded at fair value, and include credit and interest rate marks associated with acquisition accounting adjustments. Purchase premiums or discounts are subsequently amortized as an adjustment to yield over the estimated contractual lives of the loans. There is no allowance for loan losses established at the acquisition date for acquired performing loans. An allowance for loan losses is recorded for any credit deterioration in these loans subsequent to acquisition. Acquired loans that met the criteria for impaired or nonaccrual of interest prior to the acquisition may be considered performing upon acquisition, regardless of whether the customer is contractually delinquent, if Mid Penn expects to fully collect the new carrying value (i.e. fair value) of the loans. As such, Mid Penn may no longer consider the loan to be nonaccrual or nonperforming and may accrue interest on these loans, including the impact of any accretable discount. In addition, charge-offs on such loans would be first applied to the nonaccretable difference portion of the fair value adjustment. The classes of the loan portfolio, summarized by the pass rating (net of deferred fees and costs of $479,000 as of June 30, 2018 and $464,000 as of December 31, 2017), and the classified ratings of special mention and substandard within Mid Penn’s internal risk rating system as of June 30, 2018 and December 31, 2017, are as follows: (Dollars in thousands) Special June 30, 2018 Pass Mention Substandard Total Commercial and industrial $ 197,102 $ 2,420 $ 5,202 $ 204,724 Commercial real estate 565,517 1,807 8,632 575,956 Commercial real estate - construction 82,323 — 367 82,690 Lease financing 153 — — 153 Residential mortgage 118,779 262 1,219 120,260 Home equity 47,732 4 79 47,815 Consumer 4,881 — — 4,881 $ 1,016,487 $ 4,493 $ 15,499 $ 1,036,479 (Dollars in thousands) Special December 31, 2017 Pass Mention Substandard Total Commercial and industrial $ 182,168 $ 453 $ 5,412 $ 188,033 Commercial real estate 505,397 1,435 8,180 515,012 Commercial real estate - construction 61,667 182 487 62,336 Lease financing 229 — — 229 Residential mortgage 97,814 157 1,062 99,033 Home equity 41,479 105 309 41,893 Consumer 3,868 — — 3,868 $ 892,622 $ 2,332 $ 15,450 $ 910,404 Mid Penn had no loans classified as doubtful as of June 30, 2018 and December 31, 2017. Impaired loans by loan portfolio class as of June 30, 2018 and December 31, 2017 are summarized as follows: June 30, 2018 December 31, 2017 (Dollars in thousands) Recorded Investment Unpaid Principal Balance Related Allowance Recorded Investment Unpaid Principal Balance Related Allowance With no related allowance recorded: Commercial and industrial $ — $ — $ — $ — $ 13 $ — Commercial real estate 1,711 2,357 — 3,424 4,056 — Commercial real estate - construction — — — — — — Lease financing — — — — — — Residential mortgage 728 852 — 760 877 — Home equity 8 107 — 260 295 — Consumer — — — — — — With no related allowance recorded and acquired with credit deterioration: Commercial and industrial $ 23 $ 23 $ — $ — $ — $ — Commercial real estate 1,466 1,466 — 555 555 — Commercial real estate - construction — — — — — — Lease financing — — — — — — Residential mortgage 493 493 — 306 306 — Home equity — — — — — — Consumer — — — — — — With an allowance recorded: Commercial and industrial $ 4,324 $ 4,410 $ 282 $ 4,434 $ 4,460 $ 136 Commercial real estate 550 602 238 1,423 1,589 293 Commercial real estate - construction 367 370 54 487 492 100 Lease financing — — — — — — Residential mortgage — — — — — — Home equity — — — — — — Consumer — — — — — — Total Impaired Loans: Commercial and industrial $ 4,347 $ 4,433 $ 282 $ 4,434 $ 4,473 $ 136 Commercial real estate 3,727 4,425 238 5,402 6,200 293 Commercial real estate - construction 367 370 54 487 492 100 Lease financing — — — — — — Residential mortgage 1,221 1,345 — 1,066 1,183 — Home equity 8 107 — 260 295 — Consumer — — — — — — The average recorded investment of impaired loans and related interest income recognized for the three and six months ended June 30, 2018 and 2017 are summarized as follows: Three Months Ended June 30, 2018 June 30, 2017 (Dollars in thousands) Average Recorded Investment Interest Income Recognized Average Recorded Investment Interest Income Recognized With no related allowance recorded: Commercial and industrial $ — $ — $ 36 $ — Commercial real estate 2,650 3 644 110 Commercial real estate - construction — — 473 — Lease financing — — — — Residential mortgage 699 7 860 7 Home equity 95 — 90 — Consumer — — — — With no related allowance recorded and acquired with credit deterioration: Commercial and industrial $ 23 $ — $ — $ — Commercial real estate 1,455 7 644 110 Commercial real estate - construction — — 326 2 Lease financing — — — — Residential mortgage 639 — — — Home equity — — — — Consumer — — — — With an allowance recorded: Commercial and industrial $ 4,349 $ — $ — $ — Commercial real estate 1,029 — 2,792 — Commercial real estate - construction 367 — 240 — Lease financing — — — — Residential mortgage — — 66 — Home equity — — — — Consumer — — — — Total Impaired Loans: Commercial and industrial $ 4,372 $ — $ 36 $ — Commercial real estate 5,134 10 4,080 220 Commercial real estate - construction 367 — 1,039 2 Lease financing — — — — Residential mortgage 1,338 7 926 7 Home equity 95 — 90 — Consumer — — — — Six Months Ended June 30, 2018 June 30, 2017 (Dollars in thousands) Average Recorded Investment Interest Income Recognized Average Recorded Investment Interest Income Recognized With no related allowance recorded: Commercial and industrial $ — $ — $ 18 $ — Commercial real estate 2,306 3 524 279 Commercial real estate - construction 17 — 313 — Lease financing — — — — Residential mortgage 796 14 843 18 Home equity 208 — 101 2 Consumer — — — — With no related allowance recorded and acquired with credit deterioration: Commercial and industrial $ 20 $ — $ — $ — Commercial real estate 2,001 14 738 110 Commercial real estate - construction — — — — Lease financing — — — — Residential mortgage 1,086 — 350 — Home equity — — — — Consumer — — — — With an allowance recorded: Commercial and industrial $ 3,519 $ — $ — $ — Commercial real estate 1,367 — 2,660 — Commercial real estate - construction 366 — 144 — Lease financing — — — — Residential mortgage — — 40 — Home equity — — — — Consumer — — — — Total Impaired Loans: Commercial and industrial $ 3,539 $ — $ 18 $ — Commercial real estate 5,674 17 3,922 389 Commercial real estate - construction 383 — 457 — Lease financing — — — — Residential mortgage 1,882 14 1,233 18 Home equity 208 — 101 2 Consumer — — — — Nonaccrual loans by loan portfolio class as of June 30, 2018 and December 31, 2017 are summarized as follows: (Dollars in thousands) June 30, 2018 December 31, 2017 Commercial and industrial $ 4,347 $ 4,434 Commercial real estate 3,215 4,902 Commercial real estate - construction 367 487 Residential mortgage 675 492 Home equity 8 260 $ 8,612 $ 10,575 The performance and credit quality of the loan portfolio is also monitored by analyzing the age of the loans receivable as determined by the length of time a recorded payment is past due. As of June 30, 2018 and December 31, 2017 Mid Penn had no accruing loans past due greater than 90 days. The classes of the loan portfolio summarized by the past due status as of June 30, 2018 and December 31, 2017 are summarized as follows: (Dollars in thousands) 30-59 60-89 Greater Days Past Days Past than 90 Total Past June 30, 2018 Due Due Days Due Current Total Loans Commercial and industrial $ 193 $ 5 $ 4,324 $ 4,522 $ 200,179 $ 204,701 Commercial real estate 757 1,468 276 2,501 571,989 574,490 Commercial real estate - construction 859 - 367 1,226 81,464 82,690 Lease financing - - - - 153 153 Residential mortgage 183 62 164 409 119,358 119,767 Home equity 35 - - 35 47,780 47,815 Consumer - 9 - 9 4,872 4,881 Loans acquired with credit deterioration: Commercial and industrial - 23 - 23 - 23 Commercial real estate - 25 901 926 540 1,466 Commercial real estate - construction - - - - - - Lease financing - - - - - - Residential mortgage 20 10 198 228 265 493 Home equity - - - - - - Consumer - - - - - - Total $ 2,047 $ 1

Fair Value Measurement

Fair Value Measurement	6 Months Ended
	Jun. 30, 2018
Fair Value Disclosures [Abstract]
Fair Value Measurement	(5 ) Fair Value Measurement Fair value measurement and disclosure guidance defines fair value as the price that would be received to sell the asset or transfer the liability in an orderly transaction (that is, not a forced liquidation or distressed sale) between market participants at the measurement date under current market conditions. This guidance provides additional information on determining when the volume and level of activity for the asset or liability has significantly decreased. The guidance also includes information on identifying circumstances when a transaction may not be considered orderly. Fair value measurement and disclosure guidance provides a list of factors that a reporting entity should evaluate to determine whether there has been a significant decrease in the volume and level of activity for the asset or liability in relation to normal market activity for the asset or liability. When the reporting entity concludes there has been a significant decrease in the volume and level of activity for the asset or liability, further analysis of the information from that market is needed and significant adjustments to the related prices may be necessary to estimate fair value in accordance with the fair value measurement and disclosure guidance. This guidance clarifies that when there has been a significant decrease in the volume and level of activity for the asset or liability, some transactions may not be orderly. In those situations, the entity must evaluate the weight of the evidence to determine whether the transaction is orderly. The guidance provides a list of circumstances that may indicate that a transaction is not orderly. A transaction price that is not associated with an orderly transaction is given little, if any, weight when estimating fair value. Inputs to valuation techniques refer to the assumptions that market participants would use in measuring the fair value of an asset or liability. Inputs may be observable, meaning those that reflect the assumptions market participants would use in pricing the asset or liability developed based on market data obtained from independent sources, or unobservable, meaning those that reflect the reporting entity’s own belief about the assumptions market participants would use in pricing the asset or liability based upon the best information available in the circumstances. Fair value measurement and disclosure guidance establishes a fair value hierarchy for valuation inputs that gives the highest priority to quoted prices in active markets for identical assets or liabilities and the lowest priority to unobservable inputs. An asset’s or liability’s placement in the fair value hierarchy is based on the lowest level of input that is significant to the fair value measurement or disclosure. The fair value hierarchy is as follows: Level 1 Inputs - Unadjusted quoted prices in active markets that are accessible at the measurement date for identical, unrestricted assets or liabilities; Level 2 Inputs - Quoted prices in markets that are not active, or inputs that are observable either directly or indirectly, for substantially the full term of the asset or liability; Level 3 Inputs - Prices or valuation techniques that require inputs that are both significant to the fair value measurement and unobservable (i.e., supported by little or no market activity). A description of the valuation methodologies used for instruments measured at fair value, as well as the general classification of such instruments pursuant to the valuation hierarchy, is set forth below. There were no transfers of assets between fair value Level 1 and Level 2 during the six months ended June 30, 2018 or 2017. The following tables illustrate the assets measured at fair value on a recurring basis segregated by hierarchy fair value levels. Fair value measurements at June 30, 2018 using: (Dollars in thousands) Total carrying value at Quoted prices in active markets Significant other observable inputs Significant unobservable inputs Assets: June 30, 2018 (Level 1) (Level 2) (Level 3) Available-for-sale securities: U.S. Treasury and U.S. government agencies $ 38,340 $ - $ 38,340 $ - Mortgage-backed U.S. government agencies 42,426 - 42,426 - State and political subdivision obligations 29,574 - 29,574 - Corporate debt securities 1,351 - 1,351 - Other assets: Equity securities 492 492 - - Loans held for sale 1,185 1,185 - - Total $ 113,368 $ 1,677 $ 111,691 $ - Fair value measurements at December 31, 2017 using: (Dollars in thousands) Total carrying value at Quoted prices in active markets Significant other observable inputs Significant unobservable inputs Assets: December 31, 2017 (Level 1) (Level 2) (Level 3) Available-for-sale securities: U.S. Treasury and U.S. government agencies $ 38,730 $ - $ 38,730 $ - Mortgage-backed U.S. government agencies 25,831 - 25,831 - State and political subdivision obligations 27,043 - 27,043 - Corporate debt securities 1,355 - 1,355 - Other assets: Equity securities 506 506 - - Loans held for sale 1,040 1,040 - - Total $ 94,505 $ 1,546 $ 92,959 $ - Certain financial assets and financial liabilities are measured at fair value on a nonrecurring basis; that is, the instruments are not measured at fair value on an ongoing basis, but are subject to fair value adjustments in certain circumstances (for example, when there is evidence of impairment). The following tables illustrate the assets measured at fair value on a nonrecurring basis segregated by hierarchy fair value levels. Fair value measurements at June 30, 2018 using: (Dollars in thousands) Total carrying value at Quoted prices in active markets Significant other observable inputs Significant unobservable inputs Assets: June 30, 2018 (Level 1) (Level 2) (Level 3) Impaired Loans $ 4,689 $ - $ - $ 4,689 Foreclosed Assets Held for Sale 29 - - 29 Mortgage Servicing Rights 111 - - 111 Fair value measurements at December 31, 2017 using: (Dollars in thousands) Total carrying value at Quoted prices in active markets Significant other observable inputs Significant unobservable inputs Assets: December 31, 2017 (Level 1) (Level 2) (Level 3) Impaired Loans $ 6,090 $ - $ - $ 6,090 Foreclosed Assets Held for Sale - - - - Mortgage Servicing Rights 126 - - 126 The following tables present additional quantitative information about assets measured at fair value on a nonrecurring basis and for which Mid Penn has utilized Level 3 inputs to determine the fair value. (Dollars in thousands) Quantitative Information about Level 3 Fair Value Measurements June 30, 2018 Fair Value Estimate Valuation Technique Unobservable Input Range Weighted Average Impaired Loans $ 4,689 Appraisal of collateral (a) Appraisal adjustments (b) 16% - 63% 27% Foreclosed Assets Held for Sale 29 Appraisal of collateral (a), (c) Appraisal adjustments (b) 29% - 29% 29% Mortgage Servicing Rights 111 Multiple of annual service fee Estimated prepayment speed based on rate and term 70% - 100% 99% (Dollars in thousands) Quantitative Information about Level 3 Fair Value Measurements December 31, 2017 Fair Value Estimate Valuation Technique Unobservable Input Range Weighted Average Impaired Loans $ 6,090 Appraisal of collateral (a) Appraisal adjustments (b) 6% - 51% 28% Foreclosed Assets Held for Sale - Appraisal of collateral (a), (c) Appraisal adjustments (b) 0% - 0% 0% Mortgage Servicing Rights 126 Multiple of annual service fee Estimated prepayment speed based on rate and term 70% - 100% 98% (a) Fair value is generally determined through independent appraisals of the underlying collateral, which generally includes various level 3 inputs which are not observable. (b) Appraisals may be adjusted downward by management for qualitative factors such as economic conditions and estimated liquidation expenses. The range of liquidation expenses and other appraisal adjustments are presented as a percent of the appraisal. Higher downward adjustments are caused by negative changes to the collateral or conditions in the real estate market, actual offers or sales contracts received, or age of the appraisal. (c) Includes qualitative adjustments by management and estimated liquidation expenses. Mid Penn uses the following methodologies and assumptions to estimate the fair value of certain assets and liabilities. Cash and Cash Equivalents: The carrying value of cash and cash equivalents is considered to be a reasonable estimate of fair value. Interest-bearing Balances with other Financial Institutions: The estimate of fair value was determined by comparing the present value of quoted interest rates on like deposits with the weighted average yield and weighted average maturity of the balances. Securities Available for Sale: The fair value of securities classified as available-for-sale is determined by obtaining quoted market prices on nationally recognized securities exchanges (Level 1), or matrix pricing (level 2), which is a mathematical technique used widely in the industry to value debt securities without relying exclusively on quoted market prices for the specific securities, but rather, relying on the securities’ relationship to other benchmark quoted prices. Held-to-Maturity Securities: The fair values of held-to-maturity securities are based on a market approach using observable inputs such as benchmark yields and securities, reported trades, issuer spreads, current bids and offers, monthly payment information and collateral performance. Loans Held for Sale: The fair values of mortgage loans originated and intended for sale in the secondary market are carried at fair value, as determined by outstanding commitments from investors. Impaired Loans (included in “Net Loans and Leases” in the following tables): Mid Penn’s rating system assumes any loans classified as substandard and nonaccrual to be impaired, and all of these loans are considered collateral dependent; therefore, all of Mid Penn’s impaired loans, whether reporting a specific allowance allocation or not, are considered collateral dependent. It is Mid Penn’s policy to obtain updated third party valuations on all impaired loans collateralized by real estate within 30 days of the credit being classified as substandard nonaccrual. Prior to receipt of the updated real estate valuation Mid Penn will use any existing real estate valuation to determine any potential allowance for loan loss issues; however, no allowance recommendation will be made until Mid Penn is in receipt of the updated valuation. In some instances Mid Penn is not holding real estate as collateral and is relying on business assets (personal property) for repayment. In these circumstances a collateral inspection is performed by Mid Penn personnel to determine an estimated value. The value is based on net book value, as provided by the financial statements, and discounted accordingly based on determinations made by management. Occasionally, Mid Penn will employ an outside service to provide a fair estimate of value based on auction sales or private sales. Management reviews the estimates of these third parties and discounts them accordingly based on management’s judgment, if deemed necessary. Mid Penn considers the estimates used in its impairment analysis to be Level 3 inputs. Mid Penn actively monitors the values of collateral on impaired loans. This monitoring may require the modification of collateral values, either in a positive or negative way, due to the passage of time or some other change in one or more valuation inputs. Collateral values for impaired loans will be reassessed by management at least every 12 months for possible revaluation by an independent third party. Loans: Loan fair values as of June 30, 2018 are estimated using an exit price approach, which incorporates discounts for credit risk and prepayment risk and considers the value indicated by current market expectations in the estimated fair value of the loan portfolio. Loan fair values as of December 31, 2017 were calculated using the entrance price approach. Under this approach, variable rate loans that reprice frequently and which entail no significant changes in credit risk had a fair value approximating carrying value. The fair value of other loans was estimated by calculating the present value of the cash flow difference between the current rate and the market rate, for the average maturity, discounted quarterly at the market rate. Foreclosed Assets Held for Sale: Certain assets included in foreclosed assets held for sale are carried at fair value and accordingly is presented as measured on a non-recurring basis. Values are estimated using Level 3 inputs, based on appraisals that consider the sales prices of property in the proximate vicinity. Accrued Interest Receivable and Payable: The carrying amount of accrued interest receivable and payable approximates their fair values. Restricted Investment in Bank Stocks: The carrying amount of required and restricted investment in correspondent bank stock approximates fair value, and considers the limited marketability of such securities. Mortgage Servicing Rights: The fair value of servicing rights is based on the present value of estimated future cash flows on pools of mortgages stratified by rate and maturity date. Deposits: The fair value for demand deposits (e.g., interest and noninterest checking, savings, and money market deposit accounts) is, by definition, equal to the amount payable on demand at the reporting date (i.e., their carrying amounts). Fair value for fixed-rate certificates of deposit was estimated using a discounted cash flow calculation by combining all fixed-rate certificates into a pool with a weighted average yield and a weighted average maturity for the pool and comparing the pool with interest rates currently being offered on a similar maturity. Short-term Borrowings: Because of time to maturity, the estimated fair value of short-term borrowings approximates the book value. Long-term and Subordinated Debt: The estimated fair values of long-term and subordinated debt were determined using discounted cash flow analysis, based on currently available borrowing rates for similar types of borrowing arrangements. Commitments to Extend Credit and Letters of Credit: The fair value of commitments to extend credit is estimated using the fees currently charged to enter into similar agreements, taking into account market interest rates, the remaining terms and present creditworthiness of the counterparties. The fair value of guarantees and letters of credit is based on fees currently charged for similar agreements. The following table summarizes the carrying value and fair value of financial instruments at June 30, 2018 and December 31, 2017. (Dollars in thousands) June 30, 2018 December 31, 2017 Carrying Fair Carrying Fair Value Value Value Value Financial assets: Cash and cash equivalents $ 39,407 $ 39,407 $ 23,514 $ 23,514 Available-for-sale investment securities 111,691 111,691 93,465 93,465 Held-to-maturity investment securities 153,321 150,016 101,356 100,483 Loans held for sale 1,185 1,185 1,040 1,040 Net loans and leases 1,028,290 1,034,131 902,798 917,081 Restricted investment in bank stocks 2,765 2,765 4,384 4,384 Accrued interest receivable 5,372 5,372 4,564 4,564 Mortgage servicing rights 111 111 126 126 Financial liabilities: Deposits $ 1,236,518 $ 1,236,604 $ 1,023,568 $ 1,026,830 Short-term borrowings - - 34,611 34,611 Long-term debt 12,241 11,978 12,352 11,692 Subordinated debt 17,342 17,245 17,338 17,358 Accrued interest payable 1,186 1,186 645 645 Off-balance sheet financial instruments: Commitments to extend credit $ - $ - $ - $ - Financial standby letters of credit - - - - The following tables present the carrying amount, fair value, and placement in the fair value hierarchy of Mid Penn’s financial instruments as of June 30, 2018 and December 31, 2017. Carrying values approximate fair values for cash and cash equivalents, interest-bearing time balances with other financial institutions, loans held for sale, restricted investment in bank stocks, mortgage servicing rights, accrued interest receivable and payable, and short-term borrowings. Other than cash and cash equivalents, which are considered Level 1 Inputs and mortgage servicing rights, which are Level 3 Inputs, these instruments are Level 2 Inputs. These tables exclude financial instruments for which the carrying amount approximates fair value, not previously disclosed. Fair Value Measurements Quoted Prices in Active Markets Significant (Dollars in thousands) for Identical Assets Significant Other Unobservable Carrying or Liabilities Observable Inputs Inputs June 30, 2018 Amount Fair Value (Level 1) (Level 2) (Level 3) Financial instruments - assets Held-to-maturity investment securities $ 153,321 $ 150,016 $ - $ 150,016 $ - Net loans and leases 1,028,290 1,034,131 - - 1,034,131 Financial instruments - liabilities Deposits $ 1,236,518 $ 1,236,604 $ - $ 1,236,604 $ - Long-term debt 12,241 11,978 - 11,978 - Subordinated debt 17,342 17,245 - 17,245 - Fair Value Measurements Quoted Prices in Active Markets Significant (Dollars in thousands) for Identical Assets Significant Other Unobservable Carrying or Liabilities Observable Inputs Inputs December 31, 2017 Amount Fair Value (Level 1) (Level 2) (Level 3) Financial instruments - assets Held-to-maturity investment securities $ 101,356 $ 100,483 $ - $ 100,483 $ - Net loans and leases 902,798 917,081 - - 917,081 Financial instruments - liabilities Deposits $ 1,023,568 $ 1,026,830 $ - $ 1,026,830 $ - Long-term debt 12,352 11,692 - 11,692 - Subordinated debt 17,338 17,358 17,358

Guarantees and Commitments

Guarantees and Commitments	6 Months Ended
	Jun. 30, 2018
Commitments And Contingencies Disclosure [Abstract]
Guarantees and Commitments	( 6 ) Guarantees and Commitments In the normal course of business, Mid Penn makes various commitments and incurs certain contingent liabilities which are not reflected in the accompanying consolidated financial statements. The commitments include various guarantees and commitments to extend credit. Commitments to extend credit are agreements to lend to a customer as long as there is no violation of any condition established in the contract. Commitments generally have fixed expiration dates or other termination clauses and may require payment of a fee. Mid Penn evaluates each customer’s creditworthiness on a case-by-case basis. The amount of collateral obtained, if deemed necessary upon extension of credit, is based on management’s credit evaluation of the customer. Standby letters of credit and financial guarantees written are conditional commitments to guarantee the performance of a customer to a third party. Those guarantees are primarily issued to support public and private borrowing arrangements. The credit risk involved in issuing letters of credit is essentially the same as that involved in extending loans to customers. Mid Penn had $20,647,000 and $20,496,000 standby letters of credit outstanding as of June 30, 2018 and December 31, 2017, respectively. Mid Penn does not anticipate any losses because of these transactions. The amount of the liability as of June 30, 2018 and December 31, 2017 for payment under standby letters of credit issued was not material. As of June 30, 2018, Mid Penn had entered into a commitment to purchase a limited partnership interest in a low-income housing project to construct thirty-seven apartments and common amenities in Dauphin County, Pennsylvania. All of the units will qualify for Federal Low-Income Housing Tax Credits (“LIHTCs”) as provided for in Section 42 of the Internal Revenue Code of 1986, as amended. Mid Penn’s limited partner capital contribution commitment is $7,593,000 which will be paid in installments over the course of construction of the low-income housing facilities. The investment in the limited partnership will be reported in other assets on the balance sheet and amortized over a ten year period. The project has been conditionally awarded $863,000 in annual LIHTCs by the Pennsylvania Housing Finance Agency, with a total anticipated LIHTC amount of $8,629,000 to be delivered to Mid Penn over the ten year amortization period. Mid Penn’s commitment to purchase the limited partnership interest is conditional upon (i) the review and approval of all closing document, (ii) an opinion letter for tax counsel to the Partnership that the project qualifies for the LIHTCs, and (iii) review and approval by Mid Penn of other documents it may deem necessary.

Subordinated Debt

Subordinated Debt	6 Months Ended
	Jun. 30, 2018
Debt Disclosure [Abstract]
Subordinated Debt	(7 ) Subordinated Debt Subordinated Debt Issued December 2017 On December 19, 2017, Mid Penn entered into agreements with investors to purchase $10,000,000 aggregate principal amount of its Subordinated Notes due 2028 (the “2017 Notes”). The 2017 Notes are intended to be treated as Tier 2 capital for regulatory capital purposes. The offering closed in December 2017. The 2017 Notes bear interest at a rate of 5.25% per year for the first five years and then float at the Wall Street Journal’s Prime Rate plus 0.50%, provided that the interest rate applicable to the outstanding principal balance will at no times be less than 5.0%. Interest is payable semi-annually in arrears on January 15 and July 15 of each year, beginning on July 15, 2018, for the first five years after issuance and will be payable quarterly in arrears thereafter on January 15, April 15, July 15, and October 15. The 2017 Notes will mature on January 1, 2028 and are redeemable in whole or in part, without premium or penalty, at any time on or after December 21, 2022, and prior to January 1, 2028. Additionally, Mid Penn may redeem the 2017 Notes in whole at any time, or in part from time to time, upon at least 30 days’ notice if: (i) a change or prospective change in law occurs that could prevent Mid Penn from deducting interest payable on the 2017 Notes for U.S. federal income tax purposes; (ii) an event occurs that precludes the 2017 Notes from being recognized as Tier 2 capital for regulatory capital purposes; or (iii) Mid Penn becomes required to register as an investment company under the Investment Company Act of 1940, as amended. In the event of a redemption described in the previous sentence, Mid Penn will redeem the 2017 Notes at 100% of the principal amount of the 2017 Notes, plus accrued and unpaid interest thereon to but excluding the date of redemption. Holders of the 2017 Notes may not accelerate the maturity of the 2017 Notes, except upon the bankruptcy, insolvency, liquidation, receivership or similar event of Mid Penn or Mid Penn Bank, its principal banking subsidiary. Subordinated Debt Issued December 2015 On December 9, 2015, Mid Penn sold $7,500,000 aggregate principal amount of Subordinated Debt (the “2015 Notes”) due 2025. The 2015 Notes are treated as Tier 2 capital for regulatory capital purposes. The 2015 Holders of the 2015 Notes may not accelerate the maturity of the 2015 Notes, except upon Mid Penn’s or Mid Penn Bank’s bankruptcy, insolvency, liquidation, receivership or similar event. ASC Subtopic 835-30, Simplifying the Presentation of Debt Issuance Costs

Defined Benefit Plans

Defined Benefit Plans	6 Months Ended
	Jun. 30, 2018
Defined Benefit Pension Plans And Defined Benefit Postretirement Plans Disclosure [Abstract]
Defined Benefit Plans	( 8 ) Defined Benefit Plans Mid Penn has an unfunded noncontributory defined benefit retirement plan for directors. The plan provides defined benefits based on years of service. Mid Penn also sponsors a defined benefit health care plan that provides post-retirement medical benefits and life insurance to qualifying full-time employees. These health care and life insurance plans are noncontributory and each plan uses a December 31 measurement date. As a result of the acquisition of Scottdale on January 8, 2018, Mid Penn has assumed a noncontributory defined benefit pension plan covering certain former employees of Scottdale. Mid Penn estimates it will contribute $600,000 to the defined benefit pension plan in 2018. A December 31 measurement date for the plan is used. The components of net periodic benefit costs from these defined benefit plans are as follows: Three Months Ended June 30, (Dollars in thousands) Pension Benefits Other Benefits 2018 2017 2018 2017 Service cost $ 153 $ 9 $ 1 $ 1 Interest cost 205 11 5 5 Expected return on plan assets (211 ) - - - Amortization (accretion) of prior service cost 4 4 (5 ) (6 ) Settlement gain (380 ) - - - Net periodic benefit (income) expense $ (229 ) $ 24 $ 1 $ - Six Months Ended June 30, (Dollars in thousands) Pension Benefits Other Benefits 2018 2017 2018 2017 Service cost $ 161 $ 18 $ 2 $ 2 Interest cost 215 22 9 10 Expected return on plan assets (211 ) - - - Amortization (accretion) of prior service cost 8 7 (10 ) (12 ) Settlement gain (380 ) - - - Net periodic benefit (income) expense $ (207 ) $ 47 $ 1 $ -

Accumulated Other Comprehensive

Accumulated Other Comprehensive Loss	6 Months Ended
	Jun. 30, 2018
Accumulated Other Comprehensive Income Loss Net Of Tax [Abstract]
Accumulated Other Comprehensive Loss	( 9 ) Accumulated Other Comprehensive Loss The components of accumulated other comprehensive loss, net of taxes, are as follows: (Dollars in thousands) Unrealized Loss on Securities Defined Benefit Plans Accumulated Other Comprehensive Loss Balance - June 30, 2018 $ (4,361 ) $ 1,127 $ (3,234 ) Balance - December 31, 2017 $ (2,159 ) $ 85 $ (2,074 )

Restricted Common Stock

Restricted Common Stock	6 Months Ended
	Jun. 30, 2018
Common Stock Number Of Shares Par Value And Other Disclosures [Abstract]
Restricted Common Stock	(10 ) Restricted Common Stock On May 6, 2014, Mid Penn shareholders approved the 2014 Restricted Stock Plan (the “Plan”), which authorizes the issuance of awards that shall not exceed, in the aggregate, 100,000 shares of common stock. Awards under the Plan are limited to employees and directors of the Company and the Bank selected by the Compensation Committee of the Board of Directors, to advance the best interest of Mid Penn and its shareholders. Share-based compensation expense relating to restricted stock is recognized on a straight-line basis over the vesting periods of the awards and is a component of salaries and benefits expense. As of June 30, 2018, a total of 25,995 restricted shares were granted under the Plan, with 6,986 of the granted shares being vested, while the remaining 19,009 granted shares remain unvested. 490 shares were forfeited due to voluntary termination of an employee during the three and six months ended June 30, 2018, while no shares were forfeited during the same periods in 2017. The Plan shares granted and vested resulted in $55,000 in compensation expense for the three months ended June 30, 2018, while $19,000 of share-based compensation expense was recorded for the three months ended June 30, 2017. Compensation expense related to the Plan was $113,000 for the six months ended June 30, 2018, while it was $37,000 for the same period in 2017.

Revenue Recognition

Revenue Recognition	6 Months Ended
	Jun. 30, 2018
Revenue From Contract With Customer [Abstract]
Revenue Recognition	(1 1 ) Revenue Recognition Mid Penn recognizes revenues when earned based upon (i) contractual terms as transactions occur, or (ii) as related services are provided and collectability is reasonably assured. The largest source of revenue for Mid Penn is interest income, which is primarily recognized on an accrual basis according to a written contract, such as loan and lease agreements or investment securities contracts. Mid Penn earns noninterest income through a variety of financial and transactional services such as trust and wealth management services, deposit account transaction fees, ATM debit card fees, and mortgage banking fees. Revenue is recorded for noninterest income based on the contractual terms for the service or transaction performed. In certain circumstances, noninterest income is reported net of associated expenses. On January 1, 2018, Mid Penn adopted FASB ASU 2014-09, Revenue from Contracts with Customers (Topic 606). This ASU establishes principles for reporting information about the nature, timing, and uncertainty of revenue and cash flows arising from the entity’s contracts to provide goods and services to customers. ASU 2014-09 applies primarily to transactional-based non-interest income revenue streams and excludes mortgage banking income, earnings from cash surrender value of life insurance, and gains on SBA loans. Mid Penn’s non-interest income revenue streams of income from fiduciary activities, service charges on deposits, ATM debit charge interchange income, merchant service fees and components of other income are within the scope of Topic 606. Within these various non-interest income streams, Mid Penn enters into business contracts with customers to perform a variety of services. These services include but not limited to (i) agreed-upon tasks (e.g. initiating a wire transfer or trust and investment management services), (ii) service of standing ready to provide goods and services (e.g. letter of credit arrangements), and (iii) arranging for another party to transfer goods or services to a customer (e.g. check order fees). Typically, contracts are approved in writing, but can also be approved in accordance with other customary business practices. The majority of the performance obligations at Mid Penn are distinct and are satisfied at a point in time and typically the transaction prices are fixed and are documented in either a fee schedule, such as non-sufficient funds fees or wire fees, or calculated as a percentage of assets under management for trust and wealth management income streams. The transaction price is not recognized in revenue until the service has occurred, or monthly in arrears for assets under management. Mid Penn does not exercise significant judgements in the recognition of income, as typically income is not recognized until the performance obligation has been satisfied. Mid Penn has not recognized any assets from the costs to obtain or fulfill a contract with customers for revenue streams that fall within the guidance of Topic 606.

Earnings per Common Share

Earnings per Common Share	6 Months Ended
	Jun. 30, 2018
Earnings Per Share [Abstract]
Earnings per Common Share	(1 2 ) Earnings per Common Share Earnings per share are computed by dividing net income by the weighted average number of common shares outstanding during each of the years presented. The following data show the amounts used in computing basic earnings per common share. The computations of basic earnings per common share follow: (Dollars in thousands, except per share data) Three Months Ended June 30, Six Months Ended June 30, 2018 2017 2018 2017 Net income $ 2,779 $ 2,345 $ $ 3,783 $ 4,339 Weighted average common shares outstanding 6,122,757 4,234,291 6,049,261 4,234,525 Basic and diluted earnings per common share $ 0.45 $ 0.55 $ $ 0.63 $ 1.02 The increase in the weighted average shares outstanding at June 30, 2018 was impacted by the issuance of 1,878,827 shares of Mid Penn common stock on January 8, 2018 in connection with the Scottdale acquisition.

Recent Accounting Pronouncement

Recent Accounting Pronouncements	6 Months Ended
	Jun. 30, 2018
New Accounting Pronouncement Or Change In Accounting Principle Retrospective Adjustments [Abstract]
Recent Accounting Pronouncements	Recent Accounting Pronouncements ASU 2016-13 : The FASB issued ASU 2016-13, Financial Instruments – Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments. The ASU requires credit losses on most financial assets measured at amortized cost and certain other instruments to be measured using an expected credit loss model (referred to as the current expected credit loss (“CECL”) model). Under this model, entities will estimate credit losses over the entire contractual term of the instrument (considering estimated prepayments, but not expected extensions or modifications unless reasonable expectation of a troubled debt restructuring exists) from the date of initial recognition of that instrument. The ASU also replaces the current accounting model for purchased credit impaired loans and debt securities. The allowance for purchased financial assets with a more-than insignificant amount of credit deterioration since origination (“PCD assets”) should be determined in a similar manner to other financial assets measured on an amortized cost basis. However, upon initial recognition, the allowance is added to the purchase price (“gross up approach”) to determine the initial amortized cost basis. The subsequent accounting for PCD financial assets is the same expected loss model described above. Further, the ASU made certain targeted amendments to the existing impairment model for available-for-sale debt securities. For an AFS debt security for which there is neither the intent nor a more-likely-than-not requirement to sell, an entity will record credit losses as an allowance rather than a write-down of the amortized cost basis. Certain incremental disclosures are required. The Update has tiered effective dates, with early adoption permitted for all entities as of the fiscal year beginning after December 15, 2018. For public business entities that are SEC filers, the amendments are effective for fiscal years beginning after December 15, 2019, including interim periods within those fiscal years. For all other public business entities, the amendments are effective for fiscal years beginning after December 15, 2020, including interim periods within those fiscal years. For all other entities, including not-for-profit entities and employee benefit plans within the scope of Topics 960 through 965 on plan accounting, the amendments are effective for fiscal years beginning after December 15, 2020, and interim periods within fiscal years beginning after December 15, 2021. Mid Penn is currently evaluating the details of this ASU and the impact the guidance will have on Mid Penn’s consolidated financial statements. Mid Penn expects that it is possible that the ASU may result in an increase in the allowance for credit losses resulting from the change to expected losses for the estimated life of the financial asset, including an allowance for debt securities. The amount of the change in the allowance for credit losses, if any, resulting from the new guidance will be impacted by the portfolio composition and asset quality at the adoption date, as well as economic conditions and forecasts at the time of adoption. ASU 2016-02: The FASB issued ASU 2016-02, Leases. The new leases standard applies a right-of-use (“ROU”) model that requires a lessee to record, for all leases with a lease term of more than 12 months, an asset representing its right to use the underlying asset and a liability to make lease payments. For leases with a term of 12 months or less, a practical expedient is available whereby a lessee may elect, by class of underlying asset, not to recognize an ROU asset or lease liability. At inception, lessees must classify all leases as either finance or operating based on five criteria. Balance sheet recognition of finance and operating leases is similar, but the pattern of expense recognition in the income statement, as well as the effect on the statement of cash flows, differs depending on the lease classification. The new leases standard requires a lessor to classify leases as either sales-type, direct financing or operating, similar to existing U.S. GAAP. Classification depends on the same five criteria used by lessees plus certain additional factors. The subsequent accounting treatment for all three lease types is substantially equivalent to existing U.S. GAAP for sales-type leases, direct financing leases, and operating leases. However, the new standard updates certain aspects of the lessor accounting model to align it with the new lessee accounting model, as well as with the new revenue standard under Topic 606. Lessees and lessors are required to provide certain qualitative and quantitative disclosures to enable users of financial statements to assess the amount, timing, and uncertainty of cash flows arising from leases. The new leases standard addresses other considerations including identification of a lease, separating lease and non-lease components of a contract, sale and leaseback transactions, modifications, combining contracts, reassessment of the lease term, and re-measurement of lease payments. It also contains comprehensive implementation guidance with practical examples. On July 30, 2018, the FASB issued ASU 2018-11, Leases (Topic 842): Targeted Improvements, The amendments for both ASUs are effective for public business entities for fiscal years beginning after December 15, 2018, including interim periods within those fiscal years. Early adoption is permitted. Specific transition requirements apply. The amendments are effective for public business entities for fiscal years beginning after December 15, 2018, including interim periods within those fiscal years. Early adoption is permitted. Specific transition requirements apply. Mid Penn occupies certain offices under non-cancelable operating lease agreements, which currently are not reflected in its consolidated statement of condition. Mid Penn expects to recognize lease liabilities and ROU assets associated with these lease agreements as required by the ASU; however, the extent of the prospective impact on Mid Penn’s consolidated financial statements and the materiality will be dependent upon the extent and type of lease arrangements involving Mid Penn at the time of the adoption of this standard. ASU 2018-07: The FASB issued ASU 2018-07, Compensation – Stock Compensation (Topic 718): Improvements to Nonemployee Share-Based Payment Accounting The ASU makes certain changes to the accounting for nonemployee awards to alight the accounting for share-based payment awards issued to employees and nonemployees. The changes require that the compensation expense associated with nonemployee equity awards with performance conditions be recognized when the achievement of the performance condition is probable, rather than upon achievement of the performance condition. Additionally, the new ASU requires that equity-classified share-based payment awards issued to nonemployees be measured on the grant date, versus the previous GAAP requirement to re-measure the awards through the performance completion date. The current requirement to reassess the classification (equity or liability) for the nonemployee awards upon vesting will be eliminated. The amendments are effective for public business entities for fiscal years beginning after December 15, 2018, including interim periods within those fiscal years. Early adoption is permitted, including interim periods. Mid Penn currently issues restricted stock awards to nonemployee directors through the 2014 Restricted Stock Plan (the “Plan”). The single performance condition of the award is that the individual remain a director of Mid Penn through the duration of the vesting period. Mid Penn is currently evaluating the details of this ASU and expects that the adoption of this ASU will not have a material impact on our consolidated financial statements as the compensation expense related to nonemployee equity awards is immaterial to Mid Penn’s overall financial condition.

Subsequent Events

Subsequent Events	6 Months Ended
	Jun. 30, 2018
Subsequent Events [Abstract]
Subsequent Events	(1 4 ) Subsequent Events Merger – First Priority Financial Corp. After the close of business on July 31, 2018, Mid Penn completed its acquisition of First Priority Financial Corp. (“First Priority”), through the merger of First Priority with and into Mid Penn pursuant to the previously announced Agreement and Plan of Merger (the “Merger Agreement”), dated as of January 16, 2018, between Mid Penn and First Priority. In connection with this acquisition, First Priority Bank, First Priority’s wholly owned bank subsidiary, was merged with and into Mid Penn Bank. Pursuant to the Merger Agreement, shareholders of First Priority received 0.3481 shares of Mid Penn common stock for each share of First Priority common stock they owned. Additionally, in accordance with the Merger Agreement, outstanding options to purchase First Priority common stock at the time of the merger were converted to the right to receive cash at a per-option value of $11.07 less the exercise price, without interest. As a result of the acquisition, Mid Penn’s fulfillment of the merger consideration requirements resulted in the issuance of approximately 2.3 million shares of Mid Penn common stock, and the payment of cash related to options of approximately $3.9 million. Mid Penn also issued 3,404 shares of its Fixed Rate Cumulative Perpetual Preferred Stock, Series D, having a fixed dividend rate of 9 percent per annum, in exchange for the 3,404 shares of First Priority preferred shares outstanding as of the closing of the merger. The acquisition expands Mid Penn’s footprint into southeastern Pennsylvania, including Chester, Berks, Montgomery, and Bucks counties. Based upon the total merger consideration from Mid Penn, t Given that the initial purchase accounting for the acquisition in accordance with generally accepted accounting principles for this business combination is not yet completed, Mid Penn is not yet able to disclose the preliminary fair value of the First Priority assets acquired and liabilities assumed. Litigation In connection with the merger acquisition of First Priority (the “Merger”), on May 31, 2018, Mid Penn and First Priority filed with the Securities and Exchange Commission (the “SEC”) a Joint Proxy Statement/Prospectus on Form S-4 (SEC File No. 333- 225304) that was declared effective by the SEC on June 19, 2018 (the “Joint Proxy Statement/Prospectus”). The Joint Proxy Statement/Prospectus was first mailed to the shareholders of First Priority on or about June 20, 2018. On July 13, 2018, counsel for Mid Penn and First Priority received notification that a complaint was filed in the Court of Common Pleas of Chester County, Pennsylvania, against members of the board of directors of First Priority, First Priority and Mid Penn. The lawsuit, which is captioned Parshall v. Sparks, et al., Case No. 2018-07025-MJ, alleges claims brought directly by one First Priority shareholder, Paul Parshall, but purports to state class claims on behalf of all First Priority shareholders. The lawsuit is based on allegations that the First Priority directors breached their fiduciary duty through material misstatements and/or omissions in the proxy statement/prospectus distributed to shareholders of First Priority and Mid Penn in connection with the pending merger of First Priority with and into Mid Penn. The lawsuit further alleges that the merger consideration is inadequate. Mid Penn is alleged to have aided and abetted the First Priority directors’ alleged breaches of their fiduciary duties. The lawsuit seeks, among other remedies, to enjoin the merger or, in the event the merger is completed, rescission of the merger or rescissory damages; unspecified damages; and costs of the lawsuit, including attorneys’ and experts’ fees. Mid Penn believes that the lawsuit is without merit as there are substantial legal and factual defenses to the claims asserted and intends to vigorously defend the lawsuit. It is not possible at this time to estimate reasonably possible losses, or even a range of reasonably possible losses, in connection with the litigation.

Revenue Recognition (Policies)

Revenue Recognition (Policies)	6 Months Ended
	Jun. 30, 2018
Revenue From Contract With Customer [Abstract]
Revenue Recognition	Revenue Recognition Mid Penn recognizes revenues when earned based upon (i) contractual terms as transactions occur, or (ii) as related services are provided and collectability is reasonably assured. The largest source of revenue for Mid Penn is interest income, which is primarily recognized on an accrual basis according to a written contract, such as loan and lease agreements or investment securities contracts. Mid Penn earns noninterest income through a variety of financial and transactional services such as trust and wealth management services, deposit account transaction fees, ATM debit card fees, and mortgage banking fees. Revenue is recorded for noninterest income based on the contractual terms for the service or transaction performed. In certain circumstances, noninterest income is reported net of associated expenses. On January 1, 2018, Mid Penn adopted FASB ASU 2014-09, Revenue from Contracts with Customers (Topic 606). This ASU establishes principles for reporting information about the nature, timing, and uncertainty of revenue and cash flows arising from the entity’s contracts to provide goods and services to customers. ASU 2014-09 applies primarily to transactional-based non-interest income revenue streams and excludes mortgage banking income, earnings from cash surrender value of life insurance, and gains on SBA loans. Mid Penn’s non-interest income revenue streams of income from fiduciary activities, service charges on deposits, ATM debit charge interchange income, merchant service fees and components of other income are within the scope of Topic 606. Within these various non-interest income streams, Mid Penn enters into business contracts with customers to perform a variety of services. These services include but not limited to (i) agreed-upon tasks (e.g. initiating a wire transfer or trust and investment management services), (ii) service of standing ready to provide goods and services (e.g. letter of credit arrangements), and (iii) arranging for another party to transfer goods or services to a customer (e.g. check order fees). Typically, contracts are approved in writing, but can also be approved in accordance with other customary business practices. The majority of the performance obligations at Mid Penn are distinct and are satisfied at a point in time and typically the transaction prices are fixed and are documented in either a fee schedule, such as non-sufficient funds fees or wire fees, or calculated as a percentage of assets under management for trust and wealth management income streams. The transaction price is not recognized in revenue until the service has occurred, or monthly in arrears for assets under management. Mid Penn does not exercise significant judgements in the recognition of income, as typically income is not recognized until the performance obligation has been satisfied. Mid Penn has not recognized any assets from the costs to obtain or fulfill a contract with customers for revenue streams that fall within the guidance of Topic 606.

Merger (Tables)

Merger (Tables)	6 Months Ended
	Jun. 30, 2018
Business Combinations [Abstract]
Allocation of the Purchase Price	The allocation of the purchase price is as follows: (Dollars in thousands) Assets acquired: Cash and cash equivalents $ 67,817 Investment securities 114,039 Restricted stock 97 Loans 70,769 Goodwill 19,189 Core deposit intangible 4,940 Premises and equipment 1,496 Foreclosed assets 11 Deferred income taxes 1,050 Accrued interest receivable 989 Other assets 266 Total assets acquired 280,663 Liabilities assumed: Deposits 209,981 Accrued interest payable 16 Other liabilities 3,693 Total liabilities assumed 213,690 Consideration paid $ 66,973 Cash paid $ 2,792 Fair value of common stock issued 64,181
Summary of the Preliminary Estimated Fair Value of the Assets Acquired and Liabilities and Equity Assumed	The following table summarizes the preliminary estimated fair value of the assets acquired and liabilities and equity assumed. (Dollars in thousands) Total purchase price $ 66,973 Net assets acquired: Cash and cash equivalents 67,817 Investment securities 114,039 Restricted stock 97 Loans 70,769 Core deposit intangible 4,940 Premises and equipment 1,496 Foreclosed assets 11 Deferred income taxes 1,050 Accrued interest receivable 989 Other assets 266 Deposits (209,981 ) Accrued interest payable (16 ) Other liabilities (3,693 ) 47,784 Goodwill $ 19,189
Fair Value Adjustments Made to the Amortized Cost Basis, Presented at the Fair Value of Loans Acquired	The table below illustrates the fair value adjustments made to the amortized cost basis in order to present a fair value of the loans acquired. (Dollars in thousands) Gross amortized cost basis at January 8, 2018 $ 71,809 Market rate adjustment 601 Credit fair value adjustment on pools of homogeneous loans (995 ) Credit fair value adjustment on impaired loans (646 ) Fair value of purchased loans at January 8, 2018 $ 70,769
Fair Value of the Loans Acquired	The information about the acquired Scottdale impaired loan portfolio as of January 8, 2018 is as follows: (Dollars in thousands) Contractually required principal and interest at acquisition $ 2,586 Contractual cash flows not expected to be collected (nonaccretable discount) (1,010 ) Expected cash flows at acquisition 1,576 Interest component of expected cash flows (accretable discount) (305 ) Fair value of acquired loans $ 1,271
Pro Forma Information	The following table presents pro forma information as if the merger between Mid Penn Bank and Scottdale had been completed on January 1, 2017. (Dollars in thousands, except per share data) Three Months Ended June 30, Six Months Ended June 30, 2018 2017 2018 2017 Net interest income after loan loss provision $ 11,414 $ 10,883 $ 22,167 $ 1,448 Noninterest income 1,559 1,486 3,206 1,585 Noninterest expense 9,753 10,275 19,663 2,544 Net income 2,768 1,529 4,831 357 Net income per common share 0.45 0.25 0.79 0.06

Investment Securities (Tables)

Investment Securities (Tables)	6 Months Ended
	Jun. 30, 2018
Securities Financing Transactions Disclosures [Abstract]
Unrealized Gain (Loss) on Investments	The amortized cost, fair value, and unrealized gains and losses on investment securities at June 30, 2018 and December 31, 2017 are as follows: (Dollars in thousands) Amortized Unrealized Unrealized Fair Cost Gains Losses Value June 30, 2018 Available-for-sale debt securities: U.S. Treasury and U.S. government agencies $ 40,597 $ — $ 2,257 $ 38,340 Mortgage-backed U.S. government agencies 43,713 1 1,288 42,426 State and political subdivision obligations 31,551 3 1,980 29,574 Corporate debt securities 1,350 1 — 1,351 Total available-for-sale debt securities 117,211 5 5,525 111,691 Held-to-maturity debt securities: U.S. Treasury and U.S. government agencies 10,985 — 201 10,784 Mortgage-backed U.S. government agencies 66,512 4 1,649 64,867 State and political subdivision obligations 75,824 57 1,516 74,365 Total held-to-maturity debt securities 153,321 61 3,366 150,016 Total $ 270,532 $ 66 $ 8,891 $ 261,707 (Dollars in thousands) Amortized Unrealized Unrealized Fair Cost Gains Losses Value December 31, 2017 Available-for-sale debt securities: U.S. Treasury and U.S. government agencies $ 40,125 $ — $ 1,395 $ 38,730 Mortgage-backed U.S. government agencies 26,398 2 569 25,831 State and political subdivision obligations 27,775 7 739 27,043 Corporate debt securities 1,350 5 — 1,355 Total available-for-sale debt securities 95,648 14 2,703 92,959 Available-for-sale equity securities: Equity securities 550 — 44 506 Total available-for-sale equity securities 550 — 44 506 Held-to-maturity debt securities: U.S. Treasury and U.S. government agencies 10,984 — 90 10,894 Mortgage-backed U.S. government agencies 53,472 — 523 52,949 State and political subdivision obligations 36,900 41 301 36,640 Total held-to-maturity debt securities 101,356 41 914 100,483 Total $ 197,554 $ 55 $ 3,661 $ 193,948
Schedule of Gross Realized Gains (Losses) on Sales of Available-For-Sale Securities	Gross realized gains and losses on sales of available-for-sale debt securities for the three and six months ended June 30, 2018 and 2017 are shown in the table below. (Dollars in thousands) Three Months Ended June 30, Six Months Ended June 30, 2018 2017 2018 2017 Realized gains $ 11 $ 77 $ 111 $ 200 Realized losses (7 ) (65 ) (9 ) (180 ) Net gains $ 4 $ 12 $ 102 $ 20
Schedule of Fair Value and Unrealized Loss on Investments in a Continuous Unrealized Loss Position	The following tables present gross unrealized losses and fair value of debt security investments aggregated by investment category and length of time that individual securities have been in a continuous unrealized loss position at June 30, 2018 and December 31, 2017. (Dollars in thousands) Less Than 12 Months 12 Months or More Total Number Number Number of Fair Unrealized of Fair Unrealized of Fair Unrealized June 30, 2018 Securities Value Losses Securities Value Losses Securities Value Losses Available-for-sale debt securities: U.S. Treasury and U.S. government agencies 3 $ 4,453 $ 231 19 $ 33,887 $ 2,026 22 $ 38,340 $ 2,257 Mortgage-backed U.S. government agencies 15 23,474 407 15 18,916 881 30 42,390 1,288 State and political subdivision obligations 15 8,094 356 41 18,486 1,624 56 26,580 1,980 Total temporarily impaired available-for-sale debt securities 33 36,021 994 75 71,289 4,531 108 107,310 5,525 Held-to-maturity debt securities: U.S. Treasury and U.S. government agencies 3 8,793 191 1 1,991 10 4 10,784 201 Mortgage-backed U.S. government agencies 37 54,276 1,324 7 8,825 325 44 63,101 1,649 State and political subdivision obligations 134 53,362 1,461 3 1,486 55 137 54,848 1,516 Total temporarily impaired held-to-maturity debt securities 174 116,431 2,976 11 12,302 390 185 128,733 3,366 Total 207 $ 152,452 $ 3,970 86 $ 83,591 $ 4,921 293 $ 236,043 $ 8,891 (Dollars in thousands) Less Than 12 Months 12 Months or More Total Number Number Number of Fair Unrealized of Fair Unrealized of Fair Unrealized December 31, 2017 Securities Value Losses Securities Value Losses Securities Value Losses Available-for-sale securities: U.S. Treasury and U.S. government agencies 3 $ 5,008 $ 184 18 $ 33,722 $ 1,211 21 $ 38,730 $ 1,395 Mortgage-backed U.S. government agencies 4 5,267 75 15 20,497 494 19 25,764 569 State and political subdivision obligations 11 6,144 102 40 19,091 637 51 25,235 739 Equity securities 0 — — 1 506 44 1 506 44 Total temporarily impaired available-for-sale securities 18 $ 16,419 $ 361 74 $ 73,816 $ 2,386 92 $ 90,235 $ 2,747 Held-to-maturity securities: U.S. Treasury and U.S. government agencies 0 — — 4 10,894 90 4 10,894 90 Mortgage-backed U.S. government agencies 0 — — 35 52,949 523 35 52,949 523 State and political subdivision obligations 0 — — 77 29,976 301 77 29,976 301 Total temporarily impaired held to maturity securities 0 — — 116 93,819 914 116 93,819 914 Total 18 $ 16,419 $ 361 190 $ 167,635 $ 3,300 208 $ 184,054 $ 3,661
Investments Classified by Contractual Maturity Date	The table below illustrates the maturity distribution of investment securities at amortized cost and fair value as of June 30, 2018. (Dollars in thousands) Available-for-sale Held-to-maturity Amortized Fair Amortized Fair June 30, 2018 Cost Value Cost Value Due in 1 year or less $ 1,460 $ 1,460 $ 2,001 $ 1,991 Due after 1 year but within 5 years 18,711 18,050 11,705 11,494 Due after 5 years but within 10 years 43,730 41,041 71,195 69,796 Due after 10 years 9,597 8,714 1,909 1,868 73,498 69,265 86,810 85,149 Mortgage-backed securities 43,713 42,426 66,511 64,867 $ 117,211 $ 111,691 $ 153,321 $ 150,016

Loans and Allowance for Loan 27

Loans and Allowance for Loan and Lease Losses (Tables)	6 Months Ended
	Jun. 30, 2018
Accounts Notes Loans And Financing Receivable Gross Allowance And Net [Abstract]
Classes of the Loan Portfolio Summarized by the Aggregate Risk Rating	The classes of the loan portfolio, summarized by the pass rating (net of deferred fees and costs of $479,000 as of June 30, 2018 and $464,000 as of December 31, 2017), and the classified ratings of special mention and substandard within Mid Penn’s internal risk rating system as of June 30, 2018 and December 31, 2017, are as follows: (Dollars in thousands) Special June 30, 2018 Pass Mention Substandard Total Commercial and industrial $ 197,102 $ 2,420 $ 5,202 $ 204,724 Commercial real estate 565,517 1,807 8,632 575,956 Commercial real estate - construction 82,323 — 367 82,690 Lease financing 153 — — 153 Residential mortgage 118,779 262 1,219 120,260 Home equity 47,732 4 79 47,815 Consumer 4,881 — — 4,881 $ 1,016,487 $ 4,493 $ 15,499 $ 1,036,479 (Dollars in thousands) Special December 31, 2017 Pass Mention Substandard Total Commercial and industrial $ 182,168 $ 453 $ 5,412 $ 188,033 Commercial real estate 505,397 1,435 8,180 515,012 Commercial real estate - construction 61,667 182 487 62,336 Lease financing 229 — — 229 Residential mortgage 97,814 157 1,062 99,033 Home equity 41,479 105 309 41,893 Consumer 3,868 — — 3,868 $ 892,622 $ 2,332 $ 15,450 $ 910,404
Impaired Loans by Loan Portfolio Class	Impaired loans by loan portfolio class as of June 30, 2018 and December 31, 2017 are summarized as follows: June 30, 2018 December 31, 2017 (Dollars in thousands) Recorded Investment Unpaid Principal Balance Related Allowance Recorded Investment Unpaid Principal Balance Related Allowance With no related allowance recorded: Commercial and industrial $ — $ — $ — $ — $ 13 $ — Commercial real estate 1,711 2,357 — 3,424 4,056 — Commercial real estate - construction — — — — — — Lease financing — — — — — — Residential mortgage 728 852 — 760 877 — Home equity 8 107 — 260 295 — Consumer — — — — — — With no related allowance recorded and acquired with credit deterioration: Commercial and industrial $ 23 $ 23 $ — $ — $ — $ — Commercial real estate 1,466 1,466 — 555 555 — Commercial real estate - construction — — — — — — Lease financing — — — — — — Residential mortgage 493 493 — 306 306 — Home equity — — — — — — Consumer — — — — — — With an allowance recorded: Commercial and industrial $ 4,324 $ 4,410 $ 282 $ 4,434 $ 4,460 $ 136 Commercial real estate 550 602 238 1,423 1,589 293 Commercial real estate - construction 367 370 54 487 492 100 Lease financing — — — — — — Residential mortgage — — — — — — Home equity — — — — — — Consumer — — — — — — Total Impaired Loans: Commercial and industrial $ 4,347 $ 4,433 $ 282 $ 4,434 $ 4,473 $ 136 Commercial real estate 3,727 4,425 238 5,402 6,200 293 Commercial real estate - construction 367 370 54 487 492 100 Lease financing — — — — — — Residential mortgage 1,221 1,345 — 1,066 1,183 — Home equity 8 107 — 260 295 — Consumer — — — — — —
Average Recorded Investment Of Impaired Loans And Related Interest Income By Loan Portfolio Class	The average recorded investment of impaired loans and related interest income recognized for the three and six months ended June 30, 2018 and 2017 are summarized as follows: Three Months Ended June 30, 2018 June 30, 2017 (Dollars in thousands) Average Recorded Investment Interest Income Recognized Average Recorded Investment Interest Income Recognized With no related allowance recorded: Commercial and industrial $ — $ — $ 36 $ — Commercial real estate 2,650 3 644 110 Commercial real estate - construction — — 473 — Lease financing — — — — Residential mortgage 699 7 860 7 Home equity 95 — 90 — Consumer — — — — With no related allowance recorded and acquired with credit deterioration: Commercial and industrial $ 23 $ — $ — $ — Commercial real estate 1,455 7 644 110 Commercial real estate - construction — — 326 2 Lease financing — — — — Residential mortgage 639 — — — Home equity — — — — Consumer — — — — With an allowance recorded: Commercial and industrial $ 4,349 $ — $ — $ — Commercial real estate 1,029 — 2,792 — Commercial real estate - construction 367 — 240 — Lease financing — — — — Residential mortgage — — 66 — Home equity — — — — Consumer — — — — Total Impaired Loans: Commercial and industrial $ 4,372 $ — $ 36 $ — Commercial real estate 5,134 10 4,080 220 Commercial real estate - construction 367 — 1,039 2 Lease financing — — — — Residential mortgage 1,338 7 926 7 Home equity 95 — 90 — Consumer — — — — Six Months Ended June 30, 2018 June 30, 2017 (Dollars in thousands) Average Recorded Investment Interest Income Recognized Average Recorded Investment Interest Income Recognized With no related allowance recorded: Commercial and industrial $ — $ — $ 18 $ — Commercial real estate 2,306 3 524 279 Commercial real estate - construction 17 — 313 — Lease financing — — — — Residential mortgage 796 14 843 18 Home equity 208 — 101 2 Consumer — — — — With no related allowance recorded and acquired with credit deterioration: Commercial and industrial $ 20 $ — $ — $ — Commercial real estate 2,001 14 738 110 Commercial real estate - construction — — — — Lease financing — — — — Residential mortgage 1,086 — 350 — Home equity — — — — Consumer — — — — With an allowance recorded: Commercial and industrial $ 3,519 $ — $ — $ — Commercial real estate 1,367 — 2,660 — Commercial real estate - construction 366 — 144 — Lease financing — — — — Residential mortgage — — 40 — Home equity — — — — Consumer — — — — Total Impaired Loans: Commercial and industrial $ 3,539 $ — $ 18 $ — Commercial real estate 5,674 17 3,922 389 Commercial real estate - construction 383 — 457 — Lease financing — — — — Residential mortgage 1,882 14 1,233 18 Home equity 208 — 101 2 Consumer — — — —
Non-accrual Loans by Classes of the Loan Portfolio	Nonaccrual loans by loan portfolio class as of June 30, 2018 and December 31, 2017 are summarized as follows: (Dollars in thousands) June 30, 2018 December 31, 2017 Commercial and industrial $ 4,347 $ 4,434 Commercial real estate 3,215 4,902 Commercial real estate - construction 367 487 Residential mortgage 675 492 Home equity 8 260 $ 8,612 $ 10,575
Loan Portfolio Summarized by the Past Due Status	The classes of the loan portfolio summarized by the past due status as of June 30, 2018 and December 31, 2017 are summarized as follows: (Dollars in thousands) 30-59 60-89 Greater Days Past Days Past than 90 Total Past June 30, 2018 Due Due Days Due Current Total Loans Commercial and industrial $ 193 $ 5 $ 4,324 $ 4,522 $ 200,179 $ 204,701 Commercial real estate 757 1,468 276 2,501 571,989 574,490 Commercial real estate - construction 859 - 367 1,226 81,464 82,690 Lease financing - - - - 153 153 Residential mortgage 183 62 164 409 119,358 119,767 Home equity 35 - - 35 47,780 47,815 Consumer - 9 - 9 4,872 4,881 Loans acquired with credit deterioration: Commercial and industrial - 23 - 23 - 23 Commercial real estate - 25 901 926 540 1,466 Commercial real estate - construction - - - - - - Lease financing - - - - - - Residential mortgage 20 10 198 228 265 493 Home equity - - - - - - Consumer - - - - - - Total $ 2,047 $ 1,602 $ 6,230 $ 9,879 $ 1,026,600 $ 1,036,479 (Dollars in thousands) 30-59 60-89 Greater Days Past Days Past than 90 Total Past December 31, 2017 Due Due Days Due Current Total Loans Commercial and industrial $ 4,439 $ 16 $ - $ 4,455 $ 183,578 $ 188,033 Commercial real estate - - 3,669 3,669 510,788 514,457 Commercial real estate - construction - - 487 487 61,849 62,336 Lease financing - - - - 229 229 Residential mortgage 310 467 177 954 97,773 98,727 Home equity 54 98 250 402 41,491 41,893 Consumer 3 - - 3 3,865 3,868 Loans acquired with credit deterioration: Commercial and industrial - - - - - - Commercial real estate 500 - 55 555 - 555 Commercial real estate - construction - - - - - - Lease financing - - - - - - Residential mortgage - 31 193 224 82 306 Home equity - - - - - - Consumer - - - - - - Total $ 5,306 $ 612 $ 4,831 $ 10,749 $ 899,655 $ 910,404
Allowance and Recorded Investment in Financing Receivables	The following tables summarize the allowance and recorded investments in loans receivable. (Dollars in thousands) As of, and for the three months ended, June 30, 2018 Commercial and industrial Commercial real estate Commercial real estate - construction Lease financing Residential mortgage Home equity Consumer Unallocated Total Allowance for loan and lease losses: Beginning balance, April 1, 2018 $ 1,977 $ 4,653 $ 183 $ - $ 452 $ 391 $ 4 $ 6 $ 7,666 Charge-offs (129 ) - (40 ) - (3 ) (91 ) (4 ) - (267 ) Recoveries - 788 - - - - 2 - 790 Provisions 272 (718 ) 3 - (8 ) 120 2 329 - Ending balance, June 30, 2018 $ 2,120 $ 4,723 $ 146 $ - $ 441 $ 420 $ 4 $ 335 $ 8,189 (Dollars in thousands) As of, and for the six months ended, June 30, 2018 Commercial and industrial Commercial real estate Commercial real estate - construction Lease financing Residential mortgage Home equity Consumer Unallocated Total Allowance for loan and lease losses: Beginning balance, January 1, 2018 $ 1,795 $ 4,435 $ 178 $ - $ 428 $ 423 $ 3 $ 344 $ 7,606 Charge-offs (129 ) - (40 ) - (5 ) (167 ) (10 ) - (351 ) Recoveries - 805 - - - - 4 - 809 Provisions 454 (517 ) 8 - 18 164 7 (9 ) 125 Ending balance, June 30, 2018 2,120 4,723 146 - 441 420 4 335 8,189 Individually evaluated for impairment 282 238 54 - - - - - 574 Ending balance: Collectively evaluated for impairment $ 1,838 $ 4,485 $ 92 $ - $ 441 $ 420 $ 4 $ 335 $ 7,615 Loans receivables: Ending balance $ 204,724 $ 575,956 $ 82,690 $ 153 $ 120,260 $ 47,815 $ 4,881 $ - $ 1,036,479 Ending balance: Individually evaluated for impairment 4,324 2,261 367 - 728 8 - - 7,688 Ending balance: 23 1,466 - - 493 - - - 1,982 Ending balance: Collectively evaluated for impairment $ 200,377 $ 572,229 $ 82,323 $ 153 $ 119,039 $ 47,807 $ 4,881 $ - $ 1,026,809 (Dollars in thousands) December 31, 2017 Commercial and industrial Commercial real estate Commercial real estate - construction Lease financing Residential mortgage Home equity Consumer Unallocated Total Allowance for loan and lease losses: Beginning balance, January 1, 2017 $ 1,795 $ 4,435 $ 178 $ - $ 428 $ 423 $ 3 $ 344 $ 7,606 Ending balance: Individually evaluated for impairment 136 293 100 - - - - - 529 Ending balance: Collectively evaluated for impairment $ 1,659 $ 4,142 $ 78 $ - $ 428 $ 423 $ 3 $ 344 $ 7,077 Loans receivable: Beginning balance, January 1, 2017 $ 188,033 $ 515,012 $ 62,336 $ 229 $ 99,033 $ 41,893 $ 3,868 $ - $ 910,404 Ending balance: Individually evaluated for impairment 4,434 4,847 487 - 760 260 - - 10,788 Ending balance: - 555 - - 306 - - - 861 Ending balance: Collectively evaluated for impairment $ 183,599 $ 509,610 $ 61,849 $ 229 $ 97,967 $ 41,633 $ 3,868 $ - $ 898,755 (Dollars in thousands) As of, and for the three months ended, June 30, 2017 Commercial and industrial Commercial real estate Commercial real estate - construction Lease financing Residential mortgage Home equity Consumer Unallocated Total Allowance for loan and lease losses: Beginning balance, April 1, 2017 $ 1,630 $ 4,715 $ 101 $ 1 $ 532 $ 364 $ 3 $ 274 $ 7,620 Charge-offs - (30 ) - - - - (10 ) - (40 ) Recoveries 3 22 - - 2 5 1 - 33 Provisions (5 ) 274 39 - 5 35 10 (258 ) 100 Ending balance, June 30, 2017 $ 1,628 $ 4,981 $ 140 $ 1 $ 539 $ 404 $ 4 $ 16 $ 7,713 (Dollars in thousands) As of, and for the six months ended, June 30, 2017 Commercial and industrial Commercial real estate Commercial real estate - construction Lease financing Residential mortgage Home equity Consumer Unallocated Total Allowance for loan and lease losses: Beginning balance, January 1, 2017 $ 1,580 $ 4,323 $ 144 $ 1 $ 541 $ 379 $ 3 $ 212 $ 7,183 Charge-offs (12 ) (30 ) - - (18 ) - (16 ) - (76 ) Recoveries 7 361 - - 4 5 4 - 381 Provisions 53 327 (4 ) - 12 20 13 (196 ) 225 Ending balance, June 30, 2017 1,628 4,981 140 1 539 404 4 16 7,713 Ending balance: Individually evaluated for impairment - 893 70 - 66 - - - 1,029 Ending balance: Collectively evaluated for impairment $ 1,628 $ 4,088 $ 70 $ 1 $ 473 $ 404 $ 4 $ 16 $ 6,684 Loans receivables: Ending balance $ 181,368 $ 482,141 $ 53,305 $ 307 $ 102,637 $ 38,671 $ 3,878 $ - $ 862,307 Ending balance: Individually evaluated for impairment - 3,651 571 - 968 327 - - 5,517 Ending balance: - 573 - - 324 - - - 897 Ending balance: Collectively evaluated for impairment $ 181,368 $ 477,917 $ 52,734 $ 307 $ 101,345 $ 38,344 $ 3,878 $ - $ 855,893
Troubled Debt Restructurings	The recorded investments in troubled debt restructured loans at June 30, 2018 and December 31, 2017 are as follows: (Dollars in thousands) Pre-Modification Post-Modification June 30, 2018 Outstanding Recorded Investment Outstanding Recorded Investment Recorded Investment Commercial and industrial $ 4,110 $ 4,460 $ 4,324 Commercial real estate 2,670 2,571 1,984 Residential mortgage 677 675 528 Home equity 14 14 3 $ 7,471 $ 7,720 $ 6,839 (Dollars in thousands) Pre-Modification Post-Modification December 31, 2017 Outstanding Recorded Investment Outstanding Recorded Investment Recorded Investment Commercial and industrial $ 4,110 $ 4,460 $ 4,434 Commercial real estate 5,735 5,581 4,593 Residential mortgage 677 675 540 Home equity 14 14 4 $ 10,536 $ 10,730 $ 9,571
Schedule of Accretion of Purchased Impaired Loan	The following tables provide activity for the accretable yield of acquired impaired loans from both the Phoenix Bancorp, Inc. (2015) and Scottdale (2018) acquisitions for the three and six months ended June 30, 2018. (Dollars in thousands) Accretable yield, April 1, 2018 $ 336 Accretable yield amortized to interest income (36 ) Reclassification from nonaccretable difference (a) - Accretable yield, June 30, 2018 $ 300 (Dollars in thousands) Accretable yield, January 1, 2018 $ 67 Acquisition of impaired loans $ 305 Accretable yield amortized to interest income (72 ) Reclassification from nonaccretable difference (a) - Accretable yield, June 30, 2018 $ 300 (a) Reclassification from non-accretable difference represents an increase to the estimated cash flows to be collected on the underlying portfolio.

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	6 Months Ended
	Jun. 30, 2018
Fair Value Disclosures [Abstract]
Assets Measured at Fair Value on a Recurring Basis	The following tables illustrate the assets measured at fair value on a recurring basis segregated by hierarchy fair value levels. Fair value measurements at June 30, 2018 using: (Dollars in thousands) Total carrying value at Quoted prices in active markets Significant other observable inputs Significant unobservable inputs Assets: June 30, 2018 (Level 1) (Level 2) (Level 3) Available-for-sale securities: U.S. Treasury and U.S. government agencies $ 38,340 $ - $ 38,340 $ - Mortgage-backed U.S. government agencies 42,426 - 42,426 - State and political subdivision obligations 29,574 - 29,574 - Corporate debt securities 1,351 - 1,351 - Other assets: Equity securities 492 492 - - Loans held for sale 1,185 1,185 - - Total $ 113,368 $ 1,677 $ 111,691 $ - Fair value measurements at December 31, 2017 using: (Dollars in thousands) Total carrying value at Quoted prices in active markets Significant other observable inputs Significant unobservable inputs Assets: December 31, 2017 (Level 1) (Level 2) (Level 3) Available-for-sale securities: U.S. Treasury and U.S. government agencies $ 38,730 $ - $ 38,730 $ - Mortgage-backed U.S. government agencies 25,831 - 25,831 - State and political subdivision obligations 27,043 - 27,043 - Corporate debt securities 1,355 - 1,355 - Other assets: Equity securities 506 506 - - Loans held for sale 1,040 1,040 - - Total $ 94,505 $ 1,546 $ 92,959 $ -
Fair Value Measurements, Nonrecurring	The following tables illustrate the assets measured at fair value on a nonrecurring basis segregated by hierarchy fair value levels. Fair value measurements at June 30, 2018 using: (Dollars in thousands) Total carrying value at Quoted prices in active markets Significant other observable inputs Significant unobservable inputs Assets: June 30, 2018 (Level 1) (Level 2) (Level 3) Impaired Loans $ 4,689 $ - $ - $ 4,689 Foreclosed Assets Held for Sale 29 - - 29 Mortgage Servicing Rights 111 - - 111 Fair value measurements at December 31, 2017 using: (Dollars in thousands) Total carrying value at Quoted prices in active markets Significant other observable inputs Significant unobservable inputs Assets: December 31, 2017 (Level 1) (Level 2) (Level 3) Impaired Loans $ 6,090 $ - $ - $ 6,090 Foreclosed Assets Held for Sale - - - - Mortgage Servicing Rights 126 - - 126
Fair Value Measurement Inputs and Valuation Techniques	The following tables present additional quantitative information about assets measured at fair value on a nonrecurring basis and for which Mid Penn has utilized Level 3 inputs to determine the fair value. (Dollars in thousands) Quantitative Information about Level 3 Fair Value Measurements June 30, 2018 Fair Value Estimate Valuation Technique Unobservable Input Range Weighted Average Impaired Loans $ 4,689 Appraisal of collateral (a) Appraisal adjustments (b) 16% - 63% 27% Foreclosed Assets Held for Sale 29 Appraisal of collateral (a), (c) Appraisal adjustments (b) 29% - 29% 29% Mortgage Servicing Rights 111 Multiple of annual service fee Estimated prepayment speed based on rate and term 70% - 100% 99% (Dollars in thousands) Quantitative Information about Level 3 Fair Value Measurements December 31, 2017 Fair Value Estimate Valuation Technique Unobservable Input Range Weighted Average Impaired Loans $ 6,090 Appraisal of collateral (a) Appraisal adjustments (b) 6% - 51% 28% Foreclosed Assets Held for Sale - Appraisal of collateral (a), (c) Appraisal adjustments (b) 0% - 0% 0% Mortgage Servicing Rights 126 Multiple of annual service fee Estimated prepayment speed based on rate and term 70% - 100% 98% (a) Fair value is generally determined through independent appraisals of the underlying collateral, which generally includes various level 3 inputs which are not observable. (b) Appraisals may be adjusted downward by management for qualitative factors such as economic conditions and estimated liquidation expenses. The range of liquidation expenses and other appraisal adjustments are presented as a percent of the appraisal. Higher downward adjustments are caused by negative changes to the collateral or conditions in the real estate market, actual offers or sales contracts received, or age of the appraisal. (c) Includes qualitative adjustments by management and estimated liquidation expenses.
Fair Value, by Balance Sheet Grouping	The following table summarizes the carrying value and fair value of financial instruments at June 30, 2018 and December 31, 2017. (Dollars in thousands) June 30, 2018 December 31, 2017 Carrying Fair Carrying Fair Value Value Value Value Financial assets: Cash and cash equivalents $ 39,407 $ 39,407 $ 23,514 $ 23,514 Available-for-sale investment securities 111,691 111,691 93,465 93,465 Held-to-maturity investment securities 153,321 150,016 101,356 100,483 Loans held for sale 1,185 1,185 1,040 1,040 Net loans and leases 1,028,290 1,034,131 902,798 917,081 Restricted investment in bank stocks 2,765 2,765 4,384 4,384 Accrued interest receivable 5,372 5,372 4,564 4,564 Mortgage servicing rights 111 111 126 126 Financial liabilities: Deposits $ 1,236,518 $ 1,236,604 $ 1,023,568 $ 1,026,830 Short-term borrowings - - 34,611 34,611 Long-term debt 12,241 11,978 12,352 11,692 Subordinated debt 17,342 17,245 17,338 17,358 Accrued interest payable 1,186 1,186 645 645 Off-balance sheet financial instruments: Commitments to extend credit $ - $ - $ - $ - Financial standby letters of credit - - - -
Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis	The following tables present the carrying amount, fair value, and placement in the fair value hierarchy of Mid Penn’s financial instruments as of June 30, 2018 and December 31, 2017. Carrying values approximate fair values for cash and cash equivalents, interest-bearing time balances with other financial institutions, loans held for sale, restricted investment in bank stocks, mortgage servicing rights, accrued interest receivable and payable, and short-term borrowings. Other than cash and cash equivalents, which are considered Level 1 Inputs and mortgage servicing rights, which are Level 3 Inputs, these instruments are Level 2 Inputs. These tables exclude financial instruments for which the carrying amount approximates fair value, not previously disclosed. Fair Value Measurements Quoted Prices in Active Markets Significant (Dollars in thousands) for Identical Assets Significant Other Unobservable Carrying or Liabilities Observable Inputs Inputs June 30, 2018 Amount Fair Value (Level 1) (Level 2) (Level 3) Financial instruments - assets Held-to-maturity investment securities $ 153,321 $ 150,016 $ - $ 150,016 $ - Net loans and leases 1,028,290 1,034,131 - - 1,034,131 Financial instruments - liabilities Deposits $ 1,236,518 $ 1,236,604 $ - $ 1,236,604 $ - Long-term debt 12,241 11,978 - 11,978 - Subordinated debt 17,342 17,245 - 17,245 - Fair Value Measurements Quoted Prices in Active Markets Significant (Dollars in thousands) for Identical Assets Significant Other Unobservable Carrying or Liabilities Observable Inputs Inputs December 31, 2017 Amount Fair Value (Level 1) (Level 2) (Level 3) Financial instruments - assets Held-to-maturity investment securities $ 101,356 $ 100,483 $ - $ 100,483 $ - Net loans and leases 902,798 917,081 - - 917,081 Financial instruments - liabilities Deposits $ 1,023,568 $ 1,026,830 $ - $ 1,026,830 $ - Long-term debt 12,352 11,692 - 11,692 - Subordinated debt 17,338 17,358 17,358

Defined Benefit Plans (Tables)

Defined Benefit Plans (Tables)	6 Months Ended
	Jun. 30, 2018
Defined Benefit Pension Plans And Defined Benefit Postretirement Plans Disclosure [Abstract]
Schedule of Net Periodic Benefit Costs	The components of net periodic benefit costs from these defined benefit plans are as follows: Three Months Ended June 30, (Dollars in thousands) Pension Benefits Other Benefits 2018 2017 2018 2017 Service cost $ 153 $ 9 $ 1 $ 1 Interest cost 205 11 5 5 Expected return on plan assets (211 ) - - - Amortization (accretion) of prior service cost 4 4 (5 ) (6 ) Settlement gain (380 ) - - - Net periodic benefit (income) expense $ (229 ) $ 24 $ 1 $ - Six Months Ended June 30, (Dollars in thousands) Pension Benefits Other Benefits 2018 2017 2018 2017 Service cost $ 161 $ 18 $ 2 $ 2 Interest cost 215 22 9 10 Expected return on plan assets (211 ) - - - Amortization (accretion) of prior service cost 8 7 (10 ) (12 ) Settlement gain (380 ) - - - Net periodic benefit (income) expense $ (207 ) $ 47 $ 1 $ -

Accumulated Other Comprehensi30

Accumulated Other Comprehensive Loss (Tables)	6 Months Ended
	Jun. 30, 2018
Accumulated Other Comprehensive Income Loss Net Of Tax [Abstract]
Components of Accumulated Other Comprehensive Loss, Net of Taxes	The components of accumulated other comprehensive loss, net of taxes, are as follows: (Dollars in thousands) Unrealized Loss on Securities Defined Benefit Plans Accumulated Other Comprehensive Loss Balance - June 30, 2018 $ (4,361 ) $ 1,127 $ (3,234 ) Balance - December 31, 2017 $ (2,159 ) $ 85 $ (2,074 )

Earnings per Common Share (Tabl

Earnings per Common Share (Tables)	6 Months Ended
	Jun. 30, 2018
Earnings Per Share [Abstract]
Basic Earnings (Loss) Per Share	The computations of basic earnings per common share follow: (Dollars in thousands, except per share data) Three Months Ended June 30, Six Months Ended June 30, 2018 2017 2018 2017 Net income $ 2,779 $ 2,345 $ $ 3,783 $ 4,339 Weighted average common shares outstanding 6,122,757 4,234,291 6,049,261 4,234,525 Basic and diluted earnings per common share $ 0.45 $ 0.55 $ $ 0.63 $ 1.02

Merger (Narrative) (Details)

Merger (Narrative) (Details) - USD ($)	Jan. 08, 2018	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017	Jan. 07, 2018	Dec. 31, 2017
Business Acquisition [Line Items]
Goodwill		$ 23,107,000		$ 23,107,000			$ 3,918,000
Scottdale Bank and Trust Company [Member]
Business Acquisition [Line Items]
Date of acquisition	Jan. 8, 2018
Per share price	$ 34.16					$ 1,166
Ratio of conversion of acquiree's shares to entity's shares	38.88%
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares	1,878,827
Business Combination, Consideration Transferred, Equity Interests Issued and Issuable	$ 64,181,000
Payments to Acquire Businesses, Gross	2,792,000
Business Combination, Consideration Transferred	66,973,000
Goodwill	19,189,000
Finite-lived Intangible Assets Acquired	$ 4,940,000
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life	10 years
Finite-Lived Intangible Assets, Amortization Expense, Next Twelve Months	$ 898,000
Finite-Lived Intangible Assets, Amortization Expense, Year Two	808,000
Finite-Lived Intangible Assets, Amortization Expense, Year Three	719,000
Finite-Lived Intangible Assets, Amortization Expense, Year Four	629,000
Finite-Lived Intangible Assets, Amortization Expense, Year Five	539,000
Finite-Lived Intangible Assets, Amortization Expense, after Year Five	1,347,000
Goodwill adjustment		579,000,000
Fair value of purchased loans	$ 70,769,000
Pro Forma Earnings		$ 2,768,000	$ 1,529,000	4,831,000	$ 357,000
Severance and retention bonus expenses				518,000
Scottdale Bank and Trust Company [Member] | Excluded Acquisition-related Costs [Member]
Business Acquisition [Line Items]
Pro Forma Earnings				$ 1,262,000
Scottdale Bank and Trust Company [Member] | Acquisition-related Costs [Member]
Business Acquisition [Line Items]
Pro Forma Earnings					$ 1,262,000

Merger (Allocation of the Purch

Merger (Allocation of the Purchase Price) (Details) - USD ($)	Jan. 08, 2018	Jun. 30, 2018	Dec. 31, 2017
Assets acquired:
Goodwill		$ 23,107,000	$ 3,918,000
Scottdale Bank and Trust Company [Member]
Assets acquired:
Cash and cash equivalents	$ 67,817,000
Investment securities	114,039,000
Restricted stock	97,000
Loans	70,769,000
Goodwill	19,189,000
Core deposit intangible	4,940,000
Premises and equipment	1,496,000
Foreclosed assets	11,000
Deferred income taxes	1,050,000
Accrued interest receivable	989,000
Other assets	266,000
Total assets acquired	280,663,000
Liabilities assumed:
Deposits	209,981,000
Accrued interest payable	16,000
Other liabilities	3,693,000
Total liabilities assumed	213,690,000
Consideration paid	66,973,000
Cash paid	2,792,000
Fair value of common stock issued	$ 64,181,000

Merger (Preliminary Estimated F

Merger (Preliminary Estimated Fair Value of Assets Acquired) (Details) - USD ($)	Jan. 08, 2018	Jun. 30, 2018	Dec. 31, 2017
Net assets acquired:
Goodwill		$ 23,107,000	$ 3,918,000
Scottdale Bank and Trust Company [Member]
Business Acquisition [Line Items]
Total purchase price	$ 66,973,000
Net assets acquired:
Cash and cash equivalents	67,817,000
Investment securities	114,039,000
Restricted stock	97,000
Loans	70,769,000
Core deposit intangible	4,940,000
Premises and equipment	1,496,000
Foreclosed assets	11,000
Deferred income taxes	1,050,000
Accrued interest receivable	989,000
Other assets	266,000
Deposits	(209,981,000)
Accrued interest payable	(16,000)
Other liabilities	(3,693,000)
Total net assets acquired	47,784,000
Goodwill	$ 19,189,000

Merger (Fair Value Adjustments)

Merger (Fair Value Adjustments) (Details) - Scottdale Bank and Trust Company [Member]	Jan. 08, 2018USD ($)
Business Acquisition [Line Items]
Gross amortized cost basis at January 8, 2018	$ 71,809,000
Market rate adjustment	601,000
Credit fair value adjustment on pools of homogeneous loans	(995,000)
Credit fair value adjustment on impaired loans	(646,000)
Fair value of purchased loans at January 8, 2018	$ 70,769,000

Merger (Fair Value of Loans Acq

Merger (Fair Value of Loans Acquired) (Details) - Scottdale Bank and Trust Company [Member] $ in Thousands	Jan. 08, 2018USD ($)
Business Acquisition [Line Items]
Contractually required principal and interest at acquisition	$ 2,586
Contractual cash flows not expected to be collected (nonaccretable discount)	(1,010)
Expected cash flows at acquisition	1,576
Interest component of expected cash flows (accretable discount)	(305)
Fair value of acquired loans	$ 1,271

Merger (Pro Forma Information)

Merger (Pro Forma Information) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Business Acquisition [Line Items]
Net interest income after loan loss provision	$ 11,414	$ 9,310	$ 22,167	$ 18,360
Noninterest income	1,559	1,362	3,206	2,798
Noninterest expense	9,742	7,558	20,925	15,360
Scottdale Bank and Trust Company [Member]
Business Acquisition [Line Items]
Net interest income after loan loss provision	11,414	10,883	22,167	1,448
Noninterest income	1,559	1,486	3,206	1,585
Noninterest expense	9,753	10,275	19,663	2,544
Net income	$ 2,768	$ 1,529	$ 4,831	$ 357
Net income per common share	$ 0.45	$ 0.25	$ 0.79	$ 0.06

Investment Securities (Unrealiz

Investment Securities (Unrealized Gain (Loss) on Investments) (Details) - USD ($)	Jun. 30, 2018	Dec. 31, 2017
Schedule of Investments [Line Items]
Available-for-sale debt securities, Amortized Cost	$ 117,211,000	$ 95,648,000
Available-for-sale debt securities, Unrealized Gains	5,000	14,000
Available-for-sale debt securities, Unrealized Losses	5,525,000	2,703,000
Available for sale debt securities, Fair Value	111,691,000	92,959,000
Held-to-maturity debt securities, Amortized Cost	153,321,000	101,356,000
Held-to-maturity debt securities, Unrealized Gains	61,000	41,000
Held-to-maturity debt securities, Unrealized Losses	3,366,000	914,000
Held-to-maturity debt securities, Fair Value	150,016,000	100,483,000
Available-for-sale securities and Held-to-maturity debt securities, Amortized Cost	270,532,000	197,554,000
Available-for-sale securities and Held-to-maturity debt securities, Unrealized Gains	66,000	55,000
Available-for-sale securities and Held-to-maturity debt securities, Unrealized Losses	8,891,000	3,661,000
Available-for-sale securities and Held-to-maturity debt securities, Fair Value	261,707,000	193,948,000
Available-for-sale equity securities, Amortized Cost		550,000
Available-for-sale equity securities, Unrealized Losses		44,000
Available for sale equity securities, Fair Value	492,000	506,000
U.S. Treasury and U.S. government agencies [Member]
Schedule of Investments [Line Items]
Available-for-sale debt securities, Amortized Cost	40,597,000	40,125,000
Available-for-sale debt securities, Unrealized Losses	2,257,000	1,395,000
Available for sale debt securities, Fair Value	38,340,000	38,730,000
Held-to-maturity debt securities, Amortized Cost	10,985,000	10,984,000
Held-to-maturity debt securities, Unrealized Losses	201,000	90,000
Held-to-maturity debt securities, Fair Value	10,784,000	10,894,000
Mortgage-backed U.S. Government Agencies [Member]
Schedule of Investments [Line Items]
Available-for-sale debt securities, Amortized Cost	43,713,000	26,398,000
Available-for-sale debt securities, Unrealized Gains	1,000	2,000
Available-for-sale debt securities, Unrealized Losses	1,288,000	569,000
Available for sale debt securities, Fair Value	42,426,000	25,831,000
Held-to-maturity debt securities, Amortized Cost	66,512,000	53,472,000
Held-to-maturity debt securities, Unrealized Gains	4,000
Held-to-maturity debt securities, Unrealized Losses	1,649,000	523,000
Held-to-maturity debt securities, Fair Value	64,867,000	52,949,000
State and political subdivision obligations [Member]
Schedule of Investments [Line Items]
Available-for-sale debt securities, Amortized Cost	31,551,000	27,775,000
Available-for-sale debt securities, Unrealized Gains	3,000	7,000
Available-for-sale debt securities, Unrealized Losses	1,980,000	739,000
Available for sale debt securities, Fair Value	29,574,000	27,043,000
Held-to-maturity debt securities, Amortized Cost	75,824,000	36,900,000
Held-to-maturity debt securities, Unrealized Gains	57,000	41,000
Held-to-maturity debt securities, Unrealized Losses	1,516,000	301,000
Held-to-maturity debt securities, Fair Value	74,365,000	36,640,000
Corporate debt securities [Member]
Schedule of Investments [Line Items]
Available-for-sale debt securities, Amortized Cost	1,350,000	1,350,000
Available-for-sale debt securities, Unrealized Gains	1,000	5,000
Available for sale debt securities, Fair Value	1,351,000	1,355,000
Equity Securities [Member]
Schedule of Investments [Line Items]
Available-for-sale equity securities, Amortized Cost		550,000
Available-for-sale equity securities, Unrealized Losses		44,000
Available for sale equity securities, Fair Value	$ 492,000	$ 506,000

Investment Securities (Narrativ

Investment Securities (Narrative) (Details) - USD ($)	3 Months Ended	6 Months Ended	12 Months Ended
	Jun. 30, 2018	Jun. 30, 2018	Dec. 31, 2017
Schedule of Investments [Line Items]
Equity securities, fair value	$ 492,000	$ 492,000	$ 506,000
Equity securities sold	0	0
Available-for-sale Securities Pledged as Collateral	$ 158,363,000	$ 158,363,000	$ 141,465,000
Debt Securities, Available-for-sale, Restriction Type [Extensible List]	us-gaap:CollateralPledgedMember	us-gaap:CollateralPledgedMember	us-gaap:CollateralPledgedMember
Equity Securities [Member]
Schedule of Investments [Line Items]
Equity securities, fair value	$ 492,000	$ 492,000	$ 506,000
Accumulated Other Comprehensive Loss [Member] | Equity Securities [Member]
Schedule of Investments [Line Items]
Net unrealized gains recongized			$ 44,000,000

Investment Securities (Schedule

Investment Securities (Schedule of Gross Realized Gains (Losses) on Sales of Available-For-Sale Securities) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Securities Financing Transactions Disclosures [Abstract]
Realized gains	$ 11	$ 77	$ 111	$ 200
Realized losses	(7)	(65)	(9)	(180)
Net gains	$ 4	$ 12	$ 102	$ 20

Investment Securities (Schedu41

Investment Securities (Schedule of Fair Value and Unrealized Loss on Investments in a Continuous Unrealized Loss Position) (Details) $ in Thousands	Jun. 30, 2018USD ($)security	Dec. 31, 2017USD ($)security
Schedule of Investments [Line Items]
Available-for-sale securities, Less than 12 Months: Number of Securities | security	33	18
Available-for-sale securities, Less than 12 Months: Fair Value	$ 36,021	$ 16,419
Available-for-sale securities, Less than 12 Months: Unrealized Losses	$ 994	$ 361
Available-for-sale securities, 12 Months or More: Number of Securities | security	75	74
Available-for-sale securities, 12 Months or More: Fair Value	$ 71,289	$ 73,816
Available-for-sale securities, 12 Months or More: Unrealized Losses	$ 4,531	$ 2,386
Available-for-sale securities, Total: Number of Securities | security	108	92
Available-for-sale securities, Total: Fair Value	$ 107,310	$ 90,235
Available-for-sale securities, Total: Unrealized Losses	$ 5,525	$ 2,747
Held-to-maturity securities, Less than 12 Months: Number of Securities | security	174	0
Held-to-maturity securities, Less than 12 Months: Fair Value	$ 116,431
Held-to-maturity securities, Less than 12 Months: Unrealized Losses	$ 2,976
Held-to-maturity securities, 12 Months or More: Number of Securities | security	11	116
Held-to-maturity securities, 12 Months or More: Fair Value	$ 12,302	$ 93,819
Held-to-maturity securities, 12 Months or More: Unrealized Losses	$ 390	$ 914
Held-to-maturity securities, Total: Number of Securities | security	185	116
Held-to-maturity securities, Total: Fair Value	$ 128,733	$ 93,819
Held-to-maturity securities, Total: Unrealized Losses	$ 3,366	$ 914
Available-for-sale securities and Held-to-maturity securities, Less than 12 Months: Number of Securities | security	207	18
Available-for-sale securities and Held-to-maturity securities, Less than 12 Months: Fair Value	$ 152,452	$ 16,419
Available-for-sale securities and Held-to-maturity securities, Less than 12 Months: Unrealized Losses	$ 3,970	$ 361
Available-for-sale securities and Held-to-maturity securities,, 12 Months or More: Number of Securities | security	86	190
Available-for-sale securities and Held-to-maturity securities, 12 Months or More: Fair Value	$ 83,591	$ 167,635
Available-for-sale securities and Held-to-maturity securities, 12 Months or More: Unrealized Losses	$ 4,921	$ 3,300
Available-for-sale securities and Held-to-maturity securities, Total: Number of Securities | security	293	208
Available-for-sale securities and Held-to-maturity securities, Total: Fair Value	$ 236,043	$ 184,054
Available-for-sale securities and Held-to-maturity securities, Total: Unrealized Losses	$ 8,891	$ 3,661
U.S. Treasury and U.S. government agencies [Member]
Schedule of Investments [Line Items]
Available-for-sale securities, Less than 12 Months: Number of Securities | security	3	3
Available-for-sale securities, Less than 12 Months: Fair Value	$ 4,453	$ 5,008
Available-for-sale securities, Less than 12 Months: Unrealized Losses	$ 231	$ 184
Available-for-sale securities, 12 Months or More: Number of Securities | security	19	18
Available-for-sale securities, 12 Months or More: Fair Value	$ 33,887	$ 33,722
Available-for-sale securities, 12 Months or More: Unrealized Losses	$ 2,026	$ 1,211
Available-for-sale securities, Total: Number of Securities | security	22	21
Available-for-sale securities, Total: Fair Value	$ 38,340	$ 38,730
Available-for-sale securities, Total: Unrealized Losses	$ 2,257	$ 1,395
Held-to-maturity securities, Less than 12 Months: Number of Securities | security	3	0
Held-to-maturity securities, Less than 12 Months: Fair Value	$ 8,793
Held-to-maturity securities, Less than 12 Months: Unrealized Losses	$ 191
Held-to-maturity securities, 12 Months or More: Number of Securities | security	1	4
Held-to-maturity securities, 12 Months or More: Fair Value	$ 1,991	$ 10,894
Held-to-maturity securities, 12 Months or More: Unrealized Losses	$ 10	$ 90
Held-to-maturity securities, Total: Number of Securities | security	4	4
Held-to-maturity securities, Total: Fair Value	$ 10,784	$ 10,894
Held-to-maturity securities, Total: Unrealized Losses	$ 201	$ 90
Mortgage-backed U.S. Government Agencies [Member]
Schedule of Investments [Line Items]
Available-for-sale securities, Less than 12 Months: Number of Securities | security	15	4
Available-for-sale securities, Less than 12 Months: Fair Value	$ 23,474	$ 5,267
Available-for-sale securities, Less than 12 Months: Unrealized Losses	$ 407	$ 75
Available-for-sale securities, 12 Months or More: Number of Securities | security	15	15
Available-for-sale securities, 12 Months or More: Fair Value	$ 18,916	$ 20,497
Available-for-sale securities, 12 Months or More: Unrealized Losses	$ 881	$ 494
Available-for-sale securities, Total: Number of Securities | security	30	19
Available-for-sale securities, Total: Fair Value	$ 42,390	$ 25,764
Available-for-sale securities, Total: Unrealized Losses	$ 1,288	$ 569
Held-to-maturity securities, Less than 12 Months: Number of Securities | security	37	0
Held-to-maturity securities, Less than 12 Months: Fair Value	$ 54,276
Held-to-maturity securities, Less than 12 Months: Unrealized Losses	$ 1,324
Held-to-maturity securities, 12 Months or More: Number of Securities | security	7	35
Held-to-maturity securities, 12 Months or More: Fair Value	$ 8,825	$ 52,949
Held-to-maturity securities, 12 Months or More: Unrealized Losses	$ 325	$ 523
Held-to-maturity securities, Total: Number of Securities | security	44	35
Held-to-maturity securities, Total: Fair Value	$ 63,101	$ 52,949
Held-to-maturity securities, Total: Unrealized Losses	$ 1,649	$ 523
State and political subdivision obligations [Member]
Schedule of Investments [Line Items]
Available-for-sale securities, Less than 12 Months: Number of Securities | security	15	11
Available-for-sale securities, Less than 12 Months: Fair Value	$ 8,094	$ 6,144
Available-for-sale securities, Less than 12 Months: Unrealized Losses	$ 356	$ 102
Available-for-sale securities, 12 Months or More: Number of Securities | security	41	40
Available-for-sale securities, 12 Months or More: Fair Value	$ 18,486	$ 19,091
Available-for-sale securities, 12 Months or More: Unrealized Losses	$ 1,624	$ 637
Available-for-sale securities, Total: Number of Securities | security	56	51
Available-for-sale securities, Total: Fair Value	$ 26,580	$ 25,235
Available-for-sale securities, Total: Unrealized Losses	$ 1,980	$ 739
Held-to-maturity securities, Less than 12 Months: Number of Securities | security	134	0
Held-to-maturity securities, Less than 12 Months: Fair Value	$ 53,362
Held-to-maturity securities, Less than 12 Months: Unrealized Losses	$ 1,461
Held-to-maturity securities, 12 Months or More: Number of Securities | security	3	77
Held-to-maturity securities, 12 Months or More: Fair Value	$ 1,486	$ 29,976
Held-to-maturity securities, 12 Months or More: Unrealized Losses	$ 55	$ 301
Held-to-maturity securities, Total: Number of Securities | security	137	77
Held-to-maturity securities, Total: Fair Value	$ 54,848	$ 29,976
Held-to-maturity securities, Total: Unrealized Losses	$ 1,516	$ 301
Equity Securities [Member]
Schedule of Investments [Line Items]
Available-for-sale securities, Less than 12 Months: Number of Securities | security		0
Available-for-sale securities, 12 Months or More: Number of Securities | security		1
Available-for-sale securities, 12 Months or More: Fair Value		$ 506
Available-for-sale securities, 12 Months or More: Unrealized Losses		$ 44
Available-for-sale securities, Total: Number of Securities | security		1
Available-for-sale securities, Total: Fair Value		$ 506
Available-for-sale securities, Total: Unrealized Losses		$ 44

Investment Securities (Investme

Investment Securities (Investments Classified by Contractual Maturity Date) (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Schedule of Investments [Line Items]
Available for sale Securities, Amortized Cost, Due in 1 year or less	$ 1,460
Available for sale Securities, Amortized Cost, Due after 1 year but within 5 years	18,711
Available for sale Securities, Amortized Cost, Due after 5 years but within 10 years	43,730
Available for sale Securities, Amortized Cost, Due after 10 years	9,597
Available-for-sale Securities, Debt Maturities, Single Maturity Date, Amortized Cost Basis, Total	73,498
Available-for-sale securities, Amortized Cost	117,211
Available for sale Securities, Fair Value, Due in 1 year or less	1,460
Available for sale Securities, Fair Value, Due after 1 year but within 5 years	18,050
Available for sale Securities, Fair Value, Due after 5 years but within 10 years	41,041
Available for sale Securities, Fair Value, Due after 10 years	8,714
Available-for-sale Securities, Debt Maturities, Single Maturity Date, Fair Value, Total	69,265
Available for sale Securities, Fair Value	111,691	$ 92,959
Held-to-maturity, Due in 1 year or less, Amortized Cost	2,001
Held-to-maturity, Due after 1 year through 5 years, Amortized Cost	11,705
Held-to-maturity, Due after 5 years through 10 years, Amortized Cost	71,195
Held-to-maturity, Due after 10 years, Amortized Cost	1,909
Held-to-maturity Securities, Debt Maturities, Single Maturity Date, Amortized Cost Basis	86,810
Held-to-maturity debt securities, Amortized Cost	153,321	101,356
Held-to-maturity, Due in 1 year or less, Fair Value	1,991
Held-to-maturity, Due after 1 year through 5, Fair Value	11,494
Held-to-maturity, Due after 5 years through 10 years, Fair Value	69,796
Held-to-maturity, Due after 10 years, Fair Value	1,868
Held-to-maturity Securities, Debt Maturities, Single Maturity Date, Fair Value	85,149
Held-to-maturity, Fair Value	150,016	$ 100,483
Mortgage-backed securities [Member]
Schedule of Investments [Line Items]
Available for sale Securities without a Single Maturity Date, Amortized Cost	43,713
Available for sale securities without a Single Maturity Date, Fair Value	42,426
Held-to-maturity without Single Maturity Date, Amortized Cost	66,511
Held-to-maturity without Single Maturity Date, Fair Value	$ 64,867

Loans and Allowance for Loan 43

Loans and Allowance for Loan and Lease Losses (Narrative) (Details)	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2018USD ($)Loan	Jun. 30, 2017USD ($)Loan	Jun. 30, 2018USD ($)Loan	Jun. 30, 2017USD ($)Loan	Dec. 31, 2017USD ($)Loan
Financing Receivable, Allowance for Credit Losses [Line Items]
Contractual payment of principal or interest past due period for discontinuing accrual of interest			90 days
Financing Receivable Deferred Fees And Costs	$ 479,000		$ 479,000		$ 464,000
Past Due	9,879,000		9,879,000		10,749,000
Financing Receivable, Modifications, Recorded Investment	6,839,000		6,839,000		9,571,000
Charge-offs associated with troubled debt restructured loans	$ 0	$ 0	$ 0	$ 0	$ 66,000
Number of troubled debt restructured loans, defaulted | Loan	0	0	0	0	0
Number of troubled debt restructured loans | Loan	0	0	0	0
Other Real Estate	$ 912,000		$ 912,000		$ 42,000
Number of consumer mortgage loans foreclosure proceedings in process | Loan			4
Loans for which formal foreclosure proceedings are in process	274,000		$ 274,000		308,000
Home Equity Loan [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Financing Receivable, Modifications, Recorded Investment	3,000		3,000		4,000
Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Past Due	6,230,000		6,230,000		4,831,000
Accruing [Member] | Four Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Financing Receivable, Modifications, Recorded Investment	531,000		531,000		544,000
Accruing [Member] | Home Equity Loan [Member] | Other Borrower
Financing Receivable, Allowance for Credit Losses [Line Items]
Financing Receivable, Modifications, Recorded Investment	3,000		3,000		4,000
Accruing [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Past Due	0		0		0
Nonaccruing [Member] | Nine Loans With Five Relationships [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Financing Receivable, Modifications, Recorded Investment	6,308,000		6,308,000
Nonaccruing [Member] | Two Large Relationships [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Financing Receivable, Modifications, Recorded Investment	5,747,000		5,747,000		7,284,000
Nonaccruing [Member] | Fifteen Loans With Five Relationships
Financing Receivable, Allowance for Credit Losses [Line Items]
Financing Receivable, Modifications, Recorded Investment	6,308,000		6,308,000
Nonaccruing [Member] | Fifteen Loans With Seven Relationships [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Financing Receivable, Modifications, Recorded Investment					9,027,000
Reserve for Off-balance Sheet Activities [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Valuation Allowances and Reserves, Balance	$ 108,000		$ 108,000		105,000
Maximum [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Non-residential consumer loans charged off on contractual basis in event of bankruptcy, in period			120 days
Maximum [Member] | Home equity lines of credit [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loan Terms			20 years
Loan To Value Ratio	85.00%		85.00%
Maximum [Member] | Home Equity Lines Of Credit [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loan Terms			5 years
Commercial [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loan Terms			1 year
Loan To Value Ratio	80.00%		80.00%
Residential Portfolio [Member] | Residential Mortgage [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Financing Receivable, Modifications, Recorded Investment	$ 528,000		$ 528,000		540,000
Residential Portfolio [Member] | Residential Mortgage [Member] | Accruing [Member] | Three Unrelated Borrowers
Financing Receivable, Allowance for Credit Losses [Line Items]
Financing Receivable, Modifications, Recorded Investment	$ 528,000		$ 528,000		$ 540,000
Residential Portfolio [Member] | Maximum [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loan Terms			30 years
Loan To Value Ratio	100.00%		100.00%
Loan To Value Ratio, Exposure After Private Mortgage Insurance			85.00%

Loans and Allowance for Loan 44

Loans and Allowance for Loan and Lease Losses (Classes Of The Loan Portfolio Summarized By The Aggregate Risk Rating) (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017	Jun. 30, 2017
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	$ 1,036,479	$ 910,404	$ 862,307
Home Equity [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	47,815	41,893	38,671
Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	1,016,487	892,622
Pass [Member] | Home Equity [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	47,732	41,479
Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	4,493	2,332
Special Mention [Member] | Home Equity [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	4	105
Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	15,499	15,450
Substandard [Member] | Home Equity [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	79	309
Commercial Portfolio [Member] | Commercial and Industrial [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	204,724	188,033	181,368
Commercial Portfolio [Member] | Commercial Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	575,956	515,012	482,141
Commercial Portfolio [Member] | Commercial Real Estate - Construction [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	82,690	62,336	53,305
Commercial Portfolio [Member] | Lease Financing [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	153	229	307
Commercial Portfolio [Member] | Pass [Member] | Commercial and Industrial [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	197,102	182,168
Commercial Portfolio [Member] | Pass [Member] | Commercial Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	565,517	505,397
Commercial Portfolio [Member] | Pass [Member] | Commercial Real Estate - Construction [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	82,323	61,667
Commercial Portfolio [Member] | Special Mention [Member] | Commercial and Industrial [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	2,420	453
Commercial Portfolio [Member] | Special Mention [Member] | Commercial Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	1,807	1,435
Commercial Portfolio [Member] | Special Mention [Member] | Commercial Real Estate - Construction [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount		182
Commercial Portfolio [Member] | Substandard [Member] | Commercial and Industrial [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	5,202	5,412
Commercial Portfolio [Member] | Substandard [Member] | Commercial Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	8,632	8,180
Commercial Portfolio [Member] | Substandard [Member] | Commercial Real Estate - Construction [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	367	487
Finance Leases Portfolio [Member] | Lease Financing [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	153	229
Finance Leases Portfolio [Member] | Pass [Member] | Lease Financing [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	153	229
Residential Portfolio [Member] | Residential Mortgage [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	120,260	99,033	102,637
Residential Portfolio [Member] | Pass [Member] | Residential Mortgage [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	118,779	97,814
Residential Portfolio [Member] | Special Mention [Member] | Residential Mortgage [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	262	157
Residential Portfolio [Member] | Substandard [Member] | Residential Mortgage [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	1,219	1,062
Consumer Portfolio [Member] | Consumer [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	4,881	3,868	$ 3,878
Consumer Portfolio [Member] | Pass [Member] | Consumer [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	$ 4,881	$ 3,868

Loans and Allowance for Loan 45

Loans and Allowance for Loan and Lease Losses (Impaired Loans by Loan Portfolio Class) (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Home Equity [Member]
Financing Receivable, Impaired [Line Items]
Impaired Loans with No Allowance: Recorded Investment	$ 8	$ 260
Impaired Loans with No Allowance: Unpaid Principal Balance	107	295
Impaired Loans: Total Recorded Investment	8	260
Impaired Loans: Total Unpaid Principal Balance	107	295
Commercial Portfolio [Member] | Commercial and Industrial [Member]
Financing Receivable, Impaired [Line Items]
Impaired Loans with No Allowance: Unpaid Principal Balance		13
Impaired Loans with Allowance: Recorded Investment	4,324	4,434
Impaired Loans with Allowance: Unpaid Principal Balance	4,410	4,460
Impaired Loans with Allowance: Related Allowance	282	136
Impaired Loans: Total Recorded Investment	4,347	4,434
Impaired Loans: Total Unpaid Principal Balance	4,433	4,473
Commercial Portfolio [Member] | Commercial and Industrial [Member] | Financial Asset Acquired with Credit Deterioration [Member]
Financing Receivable, Impaired [Line Items]
Impaired Loans with No Allowance: Recorded Investment	23
Impaired Loans with No Allowance: Unpaid Principal Balance	23
Commercial Portfolio [Member] | Commercial Real Estate [Member]
Financing Receivable, Impaired [Line Items]
Impaired Loans with No Allowance: Recorded Investment	1,711	3,424
Impaired Loans with No Allowance: Unpaid Principal Balance	2,357	4,056
Impaired Loans with Allowance: Recorded Investment	550	1,423
Impaired Loans with Allowance: Unpaid Principal Balance	602	1,589
Impaired Loans with Allowance: Related Allowance	238	293
Impaired Loans: Total Recorded Investment	3,727	5,402
Impaired Loans: Total Unpaid Principal Balance	4,425	6,200
Commercial Portfolio [Member] | Commercial Real Estate [Member] | Financial Asset Acquired with Credit Deterioration [Member]
Financing Receivable, Impaired [Line Items]
Impaired Loans with No Allowance: Recorded Investment	1,466	555
Impaired Loans with No Allowance: Unpaid Principal Balance	1,466	555
Commercial Portfolio [Member] | Commercial Real Estate - Construction [Member]
Financing Receivable, Impaired [Line Items]
Impaired Loans with Allowance: Recorded Investment	367	487
Impaired Loans with Allowance: Unpaid Principal Balance	370	492
Impaired Loans with Allowance: Related Allowance	54	100
Impaired Loans: Total Recorded Investment	367	487
Impaired Loans: Total Unpaid Principal Balance	370	492
Residential Portfolio [Member] | Residential Mortgage [Member]
Financing Receivable, Impaired [Line Items]
Impaired Loans with No Allowance: Recorded Investment	728	760
Impaired Loans with No Allowance: Unpaid Principal Balance	852	877
Impaired Loans: Total Recorded Investment	1,221	1,066
Impaired Loans: Total Unpaid Principal Balance	1,345	1,183
Residential Portfolio [Member] | Residential Mortgage [Member] | Financial Asset Acquired with Credit Deterioration [Member]
Financing Receivable, Impaired [Line Items]
Impaired Loans with No Allowance: Recorded Investment	493	306
Impaired Loans with No Allowance: Unpaid Principal Balance	$ 493	$ 306

Loans and Allowance for Loan 46

Loans and Allowance for Loan and Lease Losses (Average Recorded Investment Of Impaired Loans And Related Interest Income By Loan Portfolio Class) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Home Equity [Member]
Financing Receivable, Impaired [Line Items]
Impaired Loans with No Allowance: Average Recorded Investment	$ 95	$ 90	$ 208	$ 101
Impaired Loans with No Allowance: Interest Income Recognized				2
Impaired Financing Receivable, Average Recorded Investment, Total	95	90	208	101
Impaired Financing Receivable, Interest Income Recognized, Total				2
Commercial Portfolio [Member] | Commercial and Industrial [Member]
Financing Receivable, Impaired [Line Items]
Impaired Loans with No Allowance: Average Recorded Investment		36		18
Impaired Loans with Allowance: Average Recorded Investment	4,349		3,519
Impaired Financing Receivable, Average Recorded Investment, Total	4,372	36	3,539	18
Commercial Portfolio [Member] | Commercial and Industrial [Member] | Financial Asset Acquired with Credit Deterioration [Member]
Financing Receivable, Impaired [Line Items]
Impaired Loans with No Allowance: Average Recorded Investment	23		20
Commercial Portfolio [Member] | Commercial Real Estate - Construction [Member]
Financing Receivable, Impaired [Line Items]
Impaired Loans with No Allowance: Average Recorded Investment		473	17	313
Impaired Loans with Allowance: Average Recorded Investment	367	240	366	144
Impaired Financing Receivable, Average Recorded Investment, Total	367	1,039	383	457
Impaired Financing Receivable, Interest Income Recognized, Total		2
Commercial Portfolio [Member] | Commercial Real Estate - Construction [Member] | Financial Asset Acquired with Credit Deterioration [Member]
Financing Receivable, Impaired [Line Items]
Impaired Loans with No Allowance: Average Recorded Investment		326
Impaired Loans with No Allowance: Interest Income Recognized		2
Commercial Portfolio [Member] | Commercial Real Estate [Member]
Financing Receivable, Impaired [Line Items]
Impaired Loans with No Allowance: Average Recorded Investment	2,650	644	2,306	524
Impaired Loans with No Allowance: Interest Income Recognized	3	110	3	279
Impaired Loans with Allowance: Average Recorded Investment	1,029	2,792	1,367	2,660
Impaired Financing Receivable, Average Recorded Investment, Total	5,134	4,080	5,674	3,922
Impaired Financing Receivable, Interest Income Recognized, Total	10	220	17	389
Commercial Portfolio [Member] | Commercial Real Estate [Member] | Financial Asset Acquired with Credit Deterioration [Member]
Financing Receivable, Impaired [Line Items]
Impaired Loans with No Allowance: Average Recorded Investment	1,455	644	2,001	738
Impaired Loans with No Allowance: Interest Income Recognized	7	110	14	110
Residential Portfolio [Member] | Residential Mortgage [Member]
Financing Receivable, Impaired [Line Items]
Impaired Loans with No Allowance: Average Recorded Investment	699	860	796	843
Impaired Loans with No Allowance: Interest Income Recognized	7	7	14	18
Impaired Loans with Allowance: Average Recorded Investment		66		40
Impaired Financing Receivable, Average Recorded Investment, Total	1,338	926	1,882	1,233
Impaired Financing Receivable, Interest Income Recognized, Total	7	$ 7	14	18
Residential Portfolio [Member] | Residential Mortgage [Member] | Financial Asset Acquired with Credit Deterioration [Member]
Financing Receivable, Impaired [Line Items]
Impaired Loans with No Allowance: Average Recorded Investment	$ 639		$ 1,086	$ 350

Loans and Allowance for Loan 47

Loans and Allowance for Loan and Lease Losses (Nonaccrual Loans By Classes Of The Loan Portfolio) (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Nonaccrual Status	$ 8,612	$ 10,575
Home Equity [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Nonaccrual Status	8	260
Commercial Portfolio [Member] | Commercial and Industrial [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Nonaccrual Status	4,347	4,434
Commercial Portfolio [Member] | Commercial Real Estate [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Nonaccrual Status	3,215	4,902
Commercial Portfolio [Member] | Commercial Real Estate - Construction [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Nonaccrual Status	367	487
Residential Portfolio [Member] | Residential Mortgage [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Nonaccrual Status	$ 675	$ 492

Loans and Allowance for Loan 48

Loans and Allowance for Loan and Lease Losses (Loan Portfolio Summarized By The Past Due Status) (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017	Jun. 30, 2017
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	$ 9,879	$ 10,749
Financing Receivable, Recorded Investment, Current	1,026,600	899,655
Total Loans	1,036,479	910,404	$ 862,307
Financial Asset Acquired with Credit Deterioration [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Loans	1,982	861	897
Financing Receivables, 30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	2,047	5,306
Financing Receivables, 60 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	1,602	612
Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	6,230	4,831
Home Equity [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Loans	47,815	41,893	38,671
Home Equity [Member] | Excluded Acquired with Credit Deterioration [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	35	402
Financing Receivable, Recorded Investment, Current	47,780	41,491
Total Loans	47,815	41,893
Home Equity [Member] | Financing Receivables, 30 to 59 Days Past Due [Member] | Excluded Acquired with Credit Deterioration [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	35	54
Home Equity [Member] | Financing Receivables, 60 to 89 Days Past Due [Member] | Excluded Acquired with Credit Deterioration [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due		98
Home Equity [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Excluded Acquired with Credit Deterioration [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due		250
Commercial Portfolio [Member] | Commercial and Industrial [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Loans	204,724	188,033	181,368
Commercial Portfolio [Member] | Commercial and Industrial [Member] | Excluded Acquired with Credit Deterioration [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	4,522	4,455
Financing Receivable, Recorded Investment, Current	200,179	183,578
Total Loans	204,701	188,033
Commercial Portfolio [Member] | Commercial and Industrial [Member] | Financial Asset Acquired with Credit Deterioration [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	23
Total Loans	23
Commercial Portfolio [Member] | Commercial and Industrial [Member] | Financing Receivables, 30 to 59 Days Past Due [Member] | Excluded Acquired with Credit Deterioration [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	193	4,439
Commercial Portfolio [Member] | Commercial and Industrial [Member] | Financing Receivables, 60 to 89 Days Past Due [Member] | Excluded Acquired with Credit Deterioration [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	5	16
Commercial Portfolio [Member] | Commercial and Industrial [Member] | Financing Receivables, 60 to 89 Days Past Due [Member] | Financial Asset Acquired with Credit Deterioration [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	23
Commercial Portfolio [Member] | Commercial and Industrial [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Excluded Acquired with Credit Deterioration [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	4,324
Commercial Portfolio [Member] | Commercial Real Estate [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Loans	575,956	515,012	482,141
Commercial Portfolio [Member] | Commercial Real Estate [Member] | Excluded Acquired with Credit Deterioration [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	2,501	3,669
Financing Receivable, Recorded Investment, Current	571,989	510,788
Total Loans	574,490	514,457
Commercial Portfolio [Member] | Commercial Real Estate [Member] | Financial Asset Acquired with Credit Deterioration [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	926	555
Financing Receivable, Recorded Investment, Current	540
Total Loans	1,466	555	573
Commercial Portfolio [Member] | Commercial Real Estate [Member] | Financing Receivables, 30 to 59 Days Past Due [Member] | Excluded Acquired with Credit Deterioration [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	757
Commercial Portfolio [Member] | Commercial Real Estate [Member] | Financing Receivables, 30 to 59 Days Past Due [Member] | Financial Asset Acquired with Credit Deterioration [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due		500
Commercial Portfolio [Member] | Commercial Real Estate [Member] | Financing Receivables, 60 to 89 Days Past Due [Member] | Excluded Acquired with Credit Deterioration [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	1,468
Commercial Portfolio [Member] | Commercial Real Estate [Member] | Financing Receivables, 60 to 89 Days Past Due [Member] | Financial Asset Acquired with Credit Deterioration [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	25
Commercial Portfolio [Member] | Commercial Real Estate [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Excluded Acquired with Credit Deterioration [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	276	3,669
Commercial Portfolio [Member] | Commercial Real Estate [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Financial Asset Acquired with Credit Deterioration [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	901	55
Commercial Portfolio [Member] | Commercial Real Estate - Construction [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Loans	82,690	62,336	53,305
Commercial Portfolio [Member] | Commercial Real Estate - Construction [Member] | Excluded Acquired with Credit Deterioration [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	1,226	487
Financing Receivable, Recorded Investment, Current	81,464	61,849
Total Loans	82,690	62,336
Commercial Portfolio [Member] | Commercial Real Estate - Construction [Member] | Financing Receivables, 30 to 59 Days Past Due [Member] | Excluded Acquired with Credit Deterioration [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	859
Commercial Portfolio [Member] | Commercial Real Estate - Construction [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Excluded Acquired with Credit Deterioration [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	367	487
Commercial Portfolio [Member] | Lease Financing [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Loans	153	229	307
Commercial Portfolio [Member] | Lease Financing [Member] | Excluded Acquired with Credit Deterioration [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Current	153	229
Total Loans	153	229
Consumer Portfolio [Member] | Consumer [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Loans	4,881	3,868	3,878
Consumer Portfolio [Member] | Consumer [Member] | Excluded Acquired with Credit Deterioration [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	9	3
Financing Receivable, Recorded Investment, Current	4,872	3,865
Total Loans	4,881	3,868
Consumer Portfolio [Member] | Financing Receivables, 30 to 59 Days Past Due [Member] | Consumer [Member] | Excluded Acquired with Credit Deterioration [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due		3
Consumer Portfolio [Member] | Financing Receivables, 60 to 89 Days Past Due [Member] | Consumer [Member] | Excluded Acquired with Credit Deterioration [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	9
Residential Portfolio [Member] | Residential Mortgage [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Loans	120,260	99,033	102,637
Residential Portfolio [Member] | Residential Mortgage [Member] | Excluded Acquired with Credit Deterioration [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	409	954
Financing Receivable, Recorded Investment, Current	119,358	97,773
Total Loans	119,767	98,727
Residential Portfolio [Member] | Residential Mortgage [Member] | Financial Asset Acquired with Credit Deterioration [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	228	224
Financing Receivable, Recorded Investment, Current	265	82
Total Loans	493	306	$ 324
Residential Portfolio [Member] | Financing Receivables, 30 to 59 Days Past Due [Member] | Residential Mortgage [Member] | Excluded Acquired with Credit Deterioration [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	183	310
Residential Portfolio [Member] | Financing Receivables, 30 to 59 Days Past Due [Member] | Residential Mortgage [Member] | Financial Asset Acquired with Credit Deterioration [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	20
Residential Portfolio [Member] | Financing Receivables, 60 to 89 Days Past Due [Member] | Residential Mortgage [Member] | Excluded Acquired with Credit Deterioration [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	62	467
Residential Portfolio [Member] | Financing Receivables, 60 to 89 Days Past Due [Member] | Residential Mortgage [Member] | Financial Asset Acquired with Credit Deterioration [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	10	31
Residential Portfolio [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Residential Mortgage [Member] | Excluded Acquired with Credit Deterioration [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	164	177
Residential Portfolio [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Residential Mortgage [Member] | Financial Asset Acquired with Credit Deterioration [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	$ 198	$ 193

Loans and Allowance for Loan 49

Loans and Allowance for Loan and Lease Losses (Allowance And Recorded Investment In Financing Receivables) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017	Dec. 31, 2017
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan and lease losses, Beginning Balance	$ 7,666	$ 7,620	$ 7,606	$ 7,183
Charge-offs	(267)	(40)	(351)	(76)
Recoveries	790	33	809	381
Provisions		100	125	225
Allowance for Loan Losses, Ending Balance	8,189	7,713	8,189	7,713
Allowance for loan losses: Ending balance: individually evaluated for impairment	574	1,029	574	1,029	$ 529
Allowance for loan losses: Ending balance: collectively evaluated for impairment	7,615	6,684	7,615	6,684	7,077
Loans receivables, Ending Balance	1,036,479	862,307	1,036,479	862,307	910,404
Loans receivables: Ending balance: individually evaluated for impairment	7,688	5,517	7,688	5,517	10,788
Loans Receivable: Ending balance: collectively evaluated for impairment	1,026,809	855,893	1,026,809	855,893	898,755
Financial Asset Acquired with Credit Deterioration [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans receivables, Ending Balance	1,982	897	1,982	897	861
Home Equity [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan and lease losses, Beginning Balance	391	364	423	379
Charge-offs	(91)		(167)
Recoveries		5		5
Provisions	120	35	164	20
Allowance for Loan Losses, Ending Balance	420	404	420	404
Allowance for loan losses: Ending balance: collectively evaluated for impairment	420	404	420	404	423
Loans receivables, Ending Balance	47,815	38,671	47,815	38,671	41,893
Loans receivables: Ending balance: individually evaluated for impairment	8	327	8	327	260
Loans Receivable: Ending balance: collectively evaluated for impairment	47,807	38,344	47,807	38,344	41,633
Commercial Portfolio [Member] | Commercial and Industrial [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan and lease losses, Beginning Balance	1,977	1,630	1,795	1,580
Charge-offs	(129)		(129)	(12)
Recoveries		3		7
Provisions	272	(5)	454	53
Allowance for Loan Losses, Ending Balance	2,120	1,628	2,120	1,628
Allowance for loan losses: Ending balance: individually evaluated for impairment	282		282		136
Allowance for loan losses: Ending balance: collectively evaluated for impairment	1,838	1,628	1,838	1,628	1,659
Loans receivables, Ending Balance	204,724	181,368	204,724	181,368	188,033
Loans receivables: Ending balance: individually evaluated for impairment	4,324		4,324		4,434
Loans Receivable: Ending balance: collectively evaluated for impairment	200,377	181,368	200,377	181,368	183,599
Commercial Portfolio [Member] | Commercial and Industrial [Member] | Financial Asset Acquired with Credit Deterioration [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans receivables, Ending Balance	23		23
Commercial Portfolio [Member] | Commercial Real Estate [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan and lease losses, Beginning Balance	4,653	4,715	4,435	4,323
Charge-offs		(30)		(30)
Recoveries	788	22	805	361
Provisions	(718)	274	(517)	327
Allowance for Loan Losses, Ending Balance	4,723	4,981	4,723	4,981
Allowance for loan losses: Ending balance: individually evaluated for impairment	238	893	238	893	293
Allowance for loan losses: Ending balance: collectively evaluated for impairment	4,485	4,088	4,485	4,088	4,142
Loans receivables, Ending Balance	575,956	482,141	575,956	482,141	515,012
Loans receivables: Ending balance: individually evaluated for impairment	2,261	3,651	2,261	3,651	4,847
Loans Receivable: Ending balance: collectively evaluated for impairment	572,229	477,917	572,229	477,917	509,610
Commercial Portfolio [Member] | Commercial Real Estate [Member] | Financial Asset Acquired with Credit Deterioration [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans receivables, Ending Balance	1,466	573	1,466	573	555
Commercial Portfolio [Member] | Commercial Real Estate - Construction [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan and lease losses, Beginning Balance	183	101	178	144
Charge-offs	(40)		(40)
Provisions	3	39	8	(4)
Allowance for Loan Losses, Ending Balance	146	140	146	140
Allowance for loan losses: Ending balance: individually evaluated for impairment	54	70	54	70	100
Allowance for loan losses: Ending balance: collectively evaluated for impairment	92	70	92	70	78
Loans receivables, Ending Balance	82,690	53,305	82,690	53,305	62,336
Loans receivables: Ending balance: individually evaluated for impairment	367	571	367	571	487
Loans Receivable: Ending balance: collectively evaluated for impairment	82,323	52,734	82,323	52,734	61,849
Commercial Portfolio [Member] | Lease Financing [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan and lease losses, Beginning Balance		1		1
Allowance for Loan Losses, Ending Balance		1		1
Allowance for loan losses: Ending balance: collectively evaluated for impairment		1		1
Loans receivables, Ending Balance	153	307	153	307	229
Loans Receivable: Ending balance: collectively evaluated for impairment	153	307	153	307	229
Consumer Portfolio [Member] | Consumer [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan and lease losses, Beginning Balance	4	3	3	3
Charge-offs	(4)	(10)	(10)	(16)
Recoveries	2	1	4	4
Provisions	2	10	7	13
Allowance for Loan Losses, Ending Balance	4	4	4	4
Allowance for loan losses: Ending balance: collectively evaluated for impairment	4	4	4	4	3
Loans receivables, Ending Balance	4,881	3,878	4,881	3,878	3,868
Loans Receivable: Ending balance: collectively evaluated for impairment	4,881	3,878	4,881	3,878	3,868
Residential Portfolio [Member] | Residential Mortgage [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan and lease losses, Beginning Balance	452	532	428	541
Charge-offs	(3)		(5)	(18)
Recoveries		2		4
Provisions	(8)	5	18	12
Allowance for Loan Losses, Ending Balance	441	539	441	539
Allowance for loan losses: Ending balance: individually evaluated for impairment		66		66
Allowance for loan losses: Ending balance: collectively evaluated for impairment	441	473	441	473	428
Loans receivables, Ending Balance	120,260	102,637	120,260	102,637	99,033
Loans receivables: Ending balance: individually evaluated for impairment	728	968	728	968	760
Loans Receivable: Ending balance: collectively evaluated for impairment	119,039	101,345	119,039	101,345	97,967
Residential Portfolio [Member] | Financial Asset Acquired with Credit Deterioration [Member] | Residential Mortgage [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans receivables, Ending Balance	493	324	493	324	306
Unallocated [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan and lease losses, Beginning Balance	6	274	344	212
Provisions	329	(258)	(9)	(196)
Allowance for Loan Losses, Ending Balance	335	16	335	16
Allowance for loan losses: Ending balance: collectively evaluated for impairment	$ 335	$ 16	$ 335	$ 16	$ 344

Loans and Allowance for Loan 50

Loans and Allowance for Loan and Lease Losses (Troubled Debt Restructurings) (Details) - USD ($)	6 Months Ended	12 Months Ended
	Jun. 30, 2018	Dec. 31, 2017
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Pre-Modification Recorded Investment	$ 7,471,000	$ 10,536,000
Financing Receivable, Modifications, Post-Modification Recorded Investment	7,720,000	10,730,000
Financing Receivable, Modifications, Recorded Investment	6,839,000	9,571,000
Home Equity [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Pre-Modification Recorded Investment	14,000	14,000
Financing Receivable, Modifications, Post-Modification Recorded Investment	14,000	14,000
Financing Receivable, Modifications, Recorded Investment	3,000	4,000
Commercial Portfolio [Member] | Commercial and Industrial [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Pre-Modification Recorded Investment	4,110,000	4,110,000
Financing Receivable, Modifications, Post-Modification Recorded Investment	4,460,000	4,460,000
Financing Receivable, Modifications, Recorded Investment	4,324,000	4,434,000
Commercial Portfolio [Member] | Commercial Real Estate [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Pre-Modification Recorded Investment	2,670,000	5,735,000
Financing Receivable, Modifications, Post-Modification Recorded Investment	2,571,000	5,581,000
Financing Receivable, Modifications, Recorded Investment	1,984,000	4,593,000
Residential Portfolio [Member] | Residential Mortgage [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Pre-Modification Recorded Investment	677,000	677,000
Financing Receivable, Modifications, Post-Modification Recorded Investment	675,000	675,000
Financing Receivable, Modifications, Recorded Investment	$ 528,000	$ 540,000

Loans and Allowance for Loan 51

Loans and Allowance for Loan and Lease Losses (Schedule of Accretion of Purchased Impaired Loan) (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
	Jun. 30, 2018	Jun. 30, 2018
Accounts Notes Loans And Financing Receivable Gross Allowance And Net [Abstract]
Accretable yield, beginning balance	$ 336	$ 67
Acquisition of impaired loans		305
Accretable yield amortized to interest income	(36)	(72)
Accretable yield, ending balance	$ 300	$ 300

Fair Value Measurement (Assets

Fair Value Measurement (Assets Measured at Fair Value on Recurring Basis) (Details) - USD ($)	Jun. 30, 2018	Dec. 31, 2017
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale debt securities	$ 111,691,000	$ 92,959,000
Available-for-sale equity securities	492,000	506,000
Loans held for sale	1,185,000	1,040,000
Available-for-sale securities	113,368,000	94,505,000
Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans held for sale	1,185,000	1,040,000
Available-for-sale securities	1,677,000	1,546,000
Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	111,691,000	92,959,000
U.S. Treasury and U.S. government agencies [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale debt securities	38,340,000	38,730,000
U.S. Treasury and U.S. government agencies [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale debt securities	38,340,000	38,730,000
Mortgage-backed U.S. Government Agencies [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale debt securities	42,426,000	25,831,000
Mortgage-backed U.S. Government Agencies [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale debt securities	42,426,000	25,831,000
State and political subdivision obligations [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale debt securities	29,574,000	27,043,000
State and political subdivision obligations [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale debt securities	29,574,000	27,043,000
Corporate debt securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale debt securities	1,351,000	1,355,000
Corporate debt securities [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale debt securities	1,351,000	1,355,000
Equity Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale equity securities	492,000	506,000
Equity Securities [Member] | Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale equity securities	$ 492,000	$ 506,000

Fair Value Measurement (Fair Va

Fair Value Measurement (Fair Value Measurements, Nonrecurring) (Details) - Nonrecurring [Member] - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Impaired Loan [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure, Nonrecurring	$ 4,689	$ 6,090
Foreclosed Assets Held for Sale [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure, Nonrecurring	29
Mortgage Servicing Rights [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure, Nonrecurring	111	126
Level 3 [Member] | Impaired Loan [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure, Nonrecurring	4,689	6,090
Level 3 [Member] | Foreclosed Assets Held for Sale [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure, Nonrecurring	29
Level 3 [Member] | Mortgage Servicing Rights [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure, Nonrecurring	$ 111	$ 126

Fair Value Measurement (Fair 54

Fair Value Measurement (Fair Value Inputs, Assets, Quantitative Information) (Details) - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 30, 2018	Dec. 31, 2017
Impaired Loan [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value Measurements, Valuation Techniques	Appraisal of collateral	Appraisal of collateral
Fair Value Disclosure, Unobservable Input Range	Appraisal adjustments	Appraisal adjustments
Impaired Loan [Member] | Nonrecurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure, Nonrecurring	$ 4,689	$ 6,090
Impaired Loan [Member] | Nonrecurring [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure, Nonrecurring	$ 4,689	$ 6,090
Foreclosed Assets Held for Sale [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value Measurements, Valuation Techniques	Appraisal of collateral	Appraisal of collateral
Fair Value Disclosure, Unobservable Input Range	Appraisal adjustments	Appraisal adjustments
Foreclosed Assets Held for Sale [Member] | Nonrecurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure, Nonrecurring	$ 29
Foreclosed Assets Held for Sale [Member] | Nonrecurring [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure, Nonrecurring	$ 29
Mortgage Servicing Rights [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value Measurements, Valuation Techniques	Multiple of annual service fee	Multiple of annual service fee
Fair Value Disclosure, Unobservable Input Range	Estimated prepayment speed based on rate and term	Estimated prepayment speed based on rate and term
Mortgage Servicing Rights [Member] | Nonrecurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure, Nonrecurring	$ 111	$ 126
Mortgage Servicing Rights [Member] | Nonrecurring [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure, Nonrecurring	$ 111	$ 126
Minimum [Member] | Discount Rate [Member] | Appraisal of Collateral [Member] | Impaired Loan [Member] | Unobservable Input - Appraisal Adjustments [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value Inputs, Discount Rate	16.00%	6.00%
Minimum [Member] | Discount Rate [Member] | Appraisal of Collateral [Member] | Foreclosed Assets Held for Sale [Member] | Unobservable Input - Appraisal Adjustments [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value Inputs, Discount Rate	29.00%	0.00%
Minimum [Member] | Prepayment Rate [Member] | Multiple of Annual Service [Member] | Mortgage Servicing Rights [Member] | Unobservable Input Estimated Prepayment Speed [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value Inputs, Discount Rate	70.00%	70.00%
Maximum [Member] | Discount Rate [Member] | Appraisal of Collateral [Member] | Impaired Loan [Member] | Unobservable Input - Appraisal Adjustments [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value Inputs, Discount Rate	63.00%	51.00%
Maximum [Member] | Discount Rate [Member] | Appraisal of Collateral [Member] | Foreclosed Assets Held for Sale [Member] | Unobservable Input - Appraisal Adjustments [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value Inputs, Discount Rate	29.00%	0.00%
Maximum [Member] | Prepayment Rate [Member] | Multiple of Annual Service [Member] | Mortgage Servicing Rights [Member] | Unobservable Input Estimated Prepayment Speed [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value Inputs, Discount Rate	100.00%	100.00%
Weighted Average [Member] | Discount Rate [Member] | Appraisal of Collateral [Member] | Impaired Loan [Member] | Unobservable Input - Appraisal Adjustments [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value Inputs, Discount Rate	27.00%	28.00%
Weighted Average [Member] | Discount Rate [Member] | Appraisal of Collateral [Member] | Foreclosed Assets Held for Sale [Member] | Unobservable Input - Appraisal Adjustments [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value Inputs, Discount Rate	29.00%	0.00%
Weighted Average [Member] | Prepayment Rate [Member] | Multiple of Annual Service [Member] | Mortgage Servicing Rights [Member] | Unobservable Input Estimated Prepayment Speed [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value Inputs, Discount Rate	99.00%	98.00%

Fair Value Measurement (Fair 55

Fair Value Measurement (Fair Value, by Balance Sheet Grouping) (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available-for-sale investment securities		$ 93,465
Held-to-maturity investment securities	$ 150,016	100,483
Carrying Value [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	39,407	23,514
Available-for-sale investment securities	111,691	93,465
Held-to-maturity investment securities	153,321	101,356
Loans held for sale	1,185	1,040
Net loans and leases	1,028,290	902,798
Restricted investment in bank stocks	2,765	4,384
Accrued interest receivable	5,372	4,564
Mortgage servicing rights	111	126
Deposits	1,236,518	1,023,568
Short-term borrowings		34,611
Long-term debt	12,241	12,352
Subordinated debt	17,342	17,338
Accrued interest payable	1,186	645
Fair Value [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	39,407	23,514
Available-for-sale investment securities	111,691	93,465
Held-to-maturity investment securities	150,016	100,483
Loans held for sale	1,185	1,040
Net loans and leases	1,034,131	917,081
Restricted investment in bank stocks	2,765	4,384
Accrued interest receivable	5,372	4,564
Mortgage servicing rights	111	126
Deposits	1,236,604	1,026,830
Short-term borrowings		34,611
Long-term debt	11,978	11,692
Subordinated debt	17,245	17,358
Accrued interest payable	$ 1,186	$ 645

Fair Value Measurements (Schedu

Fair Value Measurements (Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis) (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Held-to-maturity investment securities	$ 150,016	$ 100,483
Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Held-to-maturity investment securities	150,016	100,483
Deposits	1,236,604	1,026,830
Long-term debt	11,978	11,692
Subordinated debt	17,245	17,358
Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Net loans and leases	1,034,131	917,081
Carrying Value [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Held-to-maturity investment securities	153,321	101,356
Net loans and leases	1,028,290	902,798
Deposits	1,236,518	1,023,568
Long-term debt	12,241	12,352
Subordinated debt	17,342	17,338
Fair Value [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Held-to-maturity investment securities	150,016	100,483
Net loans and leases	1,034,131	917,081
Deposits	1,236,604	1,026,830
Long-term debt	11,978	11,692
Subordinated debt	$ 17,245	$ 17,358

Guarantees and Commitments (Nar

Guarantees and Commitments (Narrative) (Details)	6 Months Ended	12 Months Ended
	Jun. 30, 2018USD ($)Apartment	Dec. 31, 2017USD ($)
Commitments, Contingencies and Guarantees [Line Items]
Number of apartments under the project | Apartment	37
Limited partner capital contribution commitment	$ 7,593,000
Project investment amortization period	10 years
Annual LIHTCs mount awarded for the project	$ 863,000
Total anticipated LIHTCs amount under the housing project	8,629,000
Financial Standby Letters of Credit [Member]
Commitments, Contingencies and Guarantees [Line Items]
Concentration Risk, Credit Risk, Financial Instrument, Maximum Exposure	$ 20,647,000	$ 20,496,000

Subordinated Debt (Narrative) (

Subordinated Debt (Narrative) (Details) - Subordinated Debt [Member] - USD ($)	Dec. 19, 2017	Dec. 09, 2015	Jun. 30, 2018	Dec. 31, 2017
Subordinated Notes Due 2028 [Member]
Subordinated debt issuance	$ 10,000,000
Debt instrument, interest rate, effective percentage	5.25%
Debt Instrument, Description of Variable Rate Basis			The 2017 Notes bear interest at a rate of 5.25% per year for the first five years and then float at the Wall Street Journal’s Prime Rate plus 0.50%, provided that the interest rate applicable to the outstanding principal balance will at no times be less than 5.0%.
Debt Instrument, Payment Terms			Interest is payable semi-annually in arrears on January 15 and July 15 of each year, beginning on July 15, 2018, for the first five years after issuance and will be payable quarterly in arrears thereafter on January 15, April 15, July 15, and October 15.
Debt instrument, maturity date			Jan. 1, 2028
Debt Instrument, Redemption, Description			The 2017 Notes will mature on January 1, 2028 and are redeemable in whole or in part, without premium or penalty, at any time on or after December 21, 2022, and prior to January 1, 2028. Additionally, Mid Penn may redeem the 2017 Notes in whole at any time, or in part from time to time, upon at least 30 days’ notice if: (i) a change or prospective change in law occurs that could prevent Mid Penn from deducting interest payable on the 2017 Notes for U.S. federal income tax purposes; (ii) an event occurs that precludes the 2017 Notes from being recognized as Tier 2 capital for regulatory capital purposes; or (iii) Mid Penn becomes required to register as an investment company under the Investment Company Act of 1940, as amended. In the event of a redemption described in the previous sentence, Mid Penn will redeem the 2017 Notes at 100% of the principal amount of the 2017 Notes, plus accrued and unpaid interest thereon to but excluding the date of redemption.
Unamortized debt issuance cost			$ 158,000	$ 162,000
Subordinated Notes Due 2028 [Member] | WSJ Prime Rate [Member]
Debt instrument, interest rate, effective percentage	5.00%
Debt Instrument, Basis Spread on Variable Rate	0.50%
Subordinated Notes Due 2025 [Member]
Subordinated debt issuance		$ 7,500,000
Debt instrument, interest rate, effective percentage		5.15%
Debt Instrument, Description of Variable Rate Basis			2015 Notes bear interest at a rate of 5.15% per year for the first five years and then float at the Wall Street Journal’s Prime Rate plus 0.50%, provided that the interest rate applicable to the outstanding principal balance will at no time be less than 4.0%.
Debt Instrument, Payment Terms			Interest is payable quarterly in arrears on January 1, April 1, July 1 and October 1 of each year, beginning on January 1, 2016.
Debt instrument, maturity date			Dec. 9, 2025
Debt Instrument, Redemption, Description			The 2015 Notes will mature on December 9, 2025 and are redeemable in whole or in part, without premium or penalty, at any time on or after December 9, 2020, and prior to December 9, 2025. Additionally, Mid Penn may redeem the 2015 Notes in whole at any time, or in part from time to time, upon at least 30 days’ notice if: (i) a change or prospective change in law occurs that could prevent Mid Penn from deducting interest payable on the 2015 Notes for U.S. federal income tax purposes; (ii) an event occurs that precludes the 2015 Notes from being recognized as Tier 2 capital for regulatory capital purposes; or (iii) Mid Penn becomes required to register as an investment company under the Investment Company Act of 1940, as amended, in each case at 100% of the principal amount of the 2015 Notes, plus accrued and unpaid interest thereon to but excluding the date of redemption.
Unamortized debt issuance cost			$ 158,000	$ 162,000
Subordinated Notes Due 2025 [Member] | WSJ Prime Rate [Member]
Debt instrument, interest rate, effective percentage		4.00%
Debt Instrument, Basis Spread on Variable Rate		0.50%

Defined Benefit Plans (Narrativ

Defined Benefit Plans (Narrative) (Details) $ in Thousands	6 Months Ended
	Jun. 30, 2018USD ($)
Defined Benefit Pension Plans And Defined Benefit Postretirement Plans Disclosure [Abstract]
Contributions by employer to defined benefit plan	$ 600,000

Defined Benefit Plans (Net Peri

Defined Benefit Plans (Net Periodic Benefit Costs) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 153	$ 9	$ 161	$ 18
Interest cost	205	11	215	22
Expected return on plan assets	(211)		(211)
Amortization (accretion) of prior service cost	4	4	8	7
Settlement gain	(380)		(380)
Net periodic benefit (income) expense	(229)	24	(207)	47
Other Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	1	1	2	2
Interest cost	5	5	9	10
Amortization (accretion) of prior service cost	(5)	$ (6)	(10)	$ (12)
Net periodic benefit (income) expense	$ 1		$ 1

Accumulated Other Comprehensi61

Accumulated Other Comprehensive Loss (Components of Accumulated Other Comprehensive Loss, Net of Taxes) (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Accumulated Other Comprehensive Income Loss Net Of Tax [Abstract]
Unrealized Loss on Securities	$ (4,361)	$ (2,159)
Defined Benefit Plans	1,127	85
Accumulated Other Comprehensive Loss	$ (3,234)	$ (2,074)

Restricted Common Stock (Detail

Restricted Common Stock (Details) - 2014 Restricted Stock Plan [Member] - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017	May 06, 2014
Class of Stock [Line Items]
Shares authorized per plan					100,000
Shares granted			25,995
Allocated share-based compensation expense	$ 55,000	$ 19,000	$ 113,000	$ 37,000
Restricted shares vested during period			6,986
Granted shares unvested	19,009		19,009
Shares forfeited, due to voluntary termination of an employee	490	0	490	0

Earnings per Common Share (Basi

Earnings per Common Share (Basic Earnings (Loss) Per Share) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Earnings Per Share [Abstract]
Net income	$ 2,779	$ 2,345	$ 3,783	$ 4,339
Weighted average common shares outstanding	6,122,757	4,234,291	6,049,261	4,234,525
Basic and diluted earnings per common share	$ 0.45	$ 0.55	$ 0.63	$ 1.02

Earnings per Common Share (Ba64

Earnings per Common Share (Basic Earnings (Loss) Per Share) (Narrative) (Details) - shares	Jan. 08, 2018	Jun. 30, 2018	Jun. 30, 2017
Earnings Per Share Basic [Line Items]
Issuance of common stock in connection with acquisition		1,878,827
Class of warrant or right, outstanding		0	0
Scottdale Acquisition [Member]
Earnings Per Share Basic [Line Items]
Issuance of common stock in connection with acquisition	1,878,827

Subsequent Events (Narrative) (

Subsequent Events (Narrative) (Details) - USD ($)	Jul. 31, 2018	Jan. 16, 2018	Jun. 30, 2018	Dec. 31, 2017
Subsequent Event [Line Items]
Total assets			$ 1,415,647,000	$ 1,170,354,000
Total deposits			$ 1,236,518,000	$ 1,023,568,000
Subsequent Event [Member]
Subsequent Event [Line Items]
Acquisition completion date	Jul. 31, 2018
First Priority Financial Corp. [Member]
Subsequent Event [Line Items]
Plan of merger agreement, date		Jan. 16, 2018
Shares of acquirer ratio of common stock		34.81%
Per share price		$ 11.07
Period prior to closing of merger for calculating average price			30 days
Total assets			$ 627,428,000
Total bank loans			522,036,000
Total deposits			$ 513,582,000
First Priority Financial Corp. [Member] | Subsequent Event [Member]
Subsequent Event [Line Items]
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares	2,300,000
Payments to Acquire Businesses, Gross	$ 3,900,000
Number of outstanding preferred shares issued in exchange	3,404
Business Combination, Consideration Transferred	$ 79,904,000
First Priority Financial Corp. [Member] | Subsequent Event [Member] | Series D Preferred Stock [Member]
Subsequent Event [Line Items]
Preferred Stock, Shares Issued	3,404
Preferred Stock, Dividend Rate, Percentage	9.00%