Number of financing receivables that have been modified by troubled debt restructurings.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 33
-URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953676-111524

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- Definition

Post-modification amount of investment in financing receivables modified by troubled debt restructurings.

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- Definition

Pre-modification amount of investment in financing receivables modified by troubled debt restructurings.

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Note 7 - Loans and Related Allowance for Loan and Lease Losses - Troubled Debt Restructurings (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017 USD ($)	Sep. 30, 2016	Sep. 30, 2017 USD ($)	Sep. 30, 2016 USD ($)
Financing Receivable, Modifications, Number of Contracts		0
Real Estate Mortgage Portfolio Segment [Member] \| Residential Loan [Member]
Financing Receivable, Modifications, Number of Contracts	1		3	1
Pre-modification outstanding recorded investment	$ 29		$ 39	$ 58
Post-modification outstanding recorded investment	$ 29		$ 39	$ 58
Commercial And Industrial [Member]
Financing Receivable, Modifications, Number of Contracts			2	2
Pre-modification outstanding recorded investment			$ 954	$ 169
Post-modification outstanding recorded investment			$ 955	$ 169
Commercial Real Estate Portfolio Segment [Member]
Financing Receivable, Modifications, Number of Contracts				1
Pre-modification outstanding recorded investment				$ 311
Post-modification outstanding recorded investment				$ 311
Extended Maturity [Member] \| Real Estate Mortgage Portfolio Segment [Member] \| Residential Loan [Member]
Financing Receivable, Modifications, Number of Contracts	1		3	1
Extended Maturity [Member] \| Commercial And Industrial [Member]
Financing Receivable, Modifications, Number of Contracts			1	2
Extended Maturity [Member] \| Commercial Real Estate Portfolio Segment [Member]
Financing Receivable, Modifications, Number of Contracts				1
Other Restructurings [Member] \| Real Estate Mortgage Portfolio Segment [Member] \| Residential Loan [Member]
Financing Receivable, Modifications, Number of Contracts
Other Restructurings [Member] \| Commercial And Industrial [Member]
Financing Receivable, Modifications, Number of Contracts			1
Other Restructurings [Member] \| Commercial Real Estate Portfolio Segment [Member]
Financing Receivable, Modifications, Number of Contracts