Fair Value Disclosures - Narrative (Details)	3 Months Ended
Mar. 31, 2019 USD ($) loan property	Mar. 31, 2018 USD ($)	Dec. 31, 2018 USD ($)
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Adjustment of Contingent Consideration	$ 9,000	$ 17,000
Valuation adjustments for loans held for sale	0	0
Carrying value of impaired loans and leases held for investment	26,002,000		$ 26,581,000
Valuation allowance of impaired loans held for investment	1,503,000		1,415,000
Servicing rights carrying amount before valuation allowance	6,700,000		6,726,000
Servicing rights valuation allowance	0		0
Impaired loans with no related reserve, Recorded Investment	$ 11,848,000		13,174,000
Other Real Estate, Number of Properties Sold \| property	1
Proceeds from sales of other real estate owned	$ 599,000	0
Other real estate owned	540,000		1,187,000
Girard Partners [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Adjustment of Contingent Consideration	9,000	$ 17,000
Held for Investment [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Carrying value of impaired loans and leases held for investment	24,500,000
Valuation allowance of impaired loans held for investment	1,503,000		1,400,000
Lease Financings [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Valuation allowance of impaired loans held for investment			0
Impaired loans with no related reserve, Recorded Investment	$ 0		$ 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	$ 28,000

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/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3602-108585

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
-Section 50
-Paragraph 4
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=35744584&loc=d3e7008-128479

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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.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 14A
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953550-111524

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Amount of allowance for credit losses related to recorded investment.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 15
-Subparagraph (a)(3)
-URI http://asc.fasb.org/extlink&oid=84173941&loc=d3e5212-111524

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 12
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Servicing rights carrying amount before 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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