Amount of increase (decrease) in the value of a contingent consideration liability, including, but not limited to, differences arising upon settlement.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
-Section 50
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The net gain (loss) resulting from sales and other disposals of other real estate owned, increases (decreases) in the valuation allowance for foreclosed real estate, and write-downs of other real estate owned after acquisition or physical possession.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 225
-Section S99
-Paragraph 1
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Amount of investment of impaired financing receivables with related allowance for credit losses and without a related allowance for credit losses.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 14A
-Subparagraph (b)
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Amount of allowance for credit losses related to recorded investment.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
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-SubTopic 10
-Section 50
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Valuation adjustments made to other real estate not separately disclosed, including, but not limited to, real estate investments, real estate loans that qualify as investments in real estate, and premises that are no longer used in operations may also be included in real estate owned. This excludes real estate assets taken in settlement of troubled loans through surrender or foreclosure.

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Number of Loans with Unrealized Gain

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Other Real Estate, Number of Properties Sold

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Other Real Estate, Number of Properties Written-Down

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Reversal to other noninterest expense accrual related to fair value adjustment of the contingent consideration liability related to acquisitions.

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Servicing rights carrying amount before valuation allowance.

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Servicing rights valuation allowance

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Unrealized Gain On Loans

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Valuation adjustments for loans held for sale.

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Fair Value Disclosures - Narrative (Details)	3 Months Ended	9 Months Ended		12 Months Ended
Fair Value Disclosures - Narrative (Details)	Jun. 30, 2017 USD ($)	Sep. 30, 2017 USD ($) loan property	Sep. 30, 2016 USD ($)	Dec. 31, 2016 USD ($)
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Reversal of other noninterest expense	$ 301,000
Adjustment of Contingent Consideration		$ (260,000)	$ 853,000
Valuation adjustments for loans held for sale		0		$ 0
Carrying value of impaired loans and leases held for investment		30,560,000
Valuation allowance of impaired loans held for investment		88,000		235,000
Servicing rights carrying amount before valuation allowance		6,600,000		6,500,000
Servicing rights valuation allowance		$ 0		0
Number of properties written-down \| property		2
OREO write-downs		$ 199,000
Number of properties sold \| property		7
Net gains on sales of other real estate owned		$ 383,000
Sterner Insurance Associates Inc [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Adjustment of Contingent Consideration		(301,000)	501,000
Girard Partners [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Adjustment of Contingent Consideration		41,000	284,000
John T. Fretz Insurance Agency [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Adjustment of Contingent Consideration			$ 68,000
Held for Investment [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Carrying value of impaired loans and leases held for investment		30,600,000		43,915,000
Valuation allowance of impaired loans held for investment		88,000		235,000
Lease Financings [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Carrying value of impaired loans and leases held for investment		1,300,000		$ 0
Valuation allowance of impaired loans held for investment		$ 0
Interest Rate Swap [Member] \| Derivative Financial Instruments, Liabilities [Member] \| Level 3 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Number of loans with unrealized gain \| loan		2
Unrealized gain on loans		$ 75,000