Loans - Impaired Loans (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015	Dec. 31, 2015
Accounts, Notes, Loans and Financing Receivable [Line Items]
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	$ 2,200		$ 2,200		$ 1,282
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance	2,367		2,367		1,332
Impaired Financing Receivable Loans With No Specific Related Allowance	0		0		0
Impaired Financing Receivable, Recorded Investment	2,200		2,200		1,282
Impaired Financing Receivable, Unpaid Principal Balance	2,367		2,367		1,332
Impaired Financing Receivable, Related Allowance	0		0		0
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment	2,043	$ 1,400	1,631	$ 1,330
Impaired Financing Receivable, with No Related Allowance, Interest Income, Accrual Method	3	6	11	18
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	3,524	0	1,568	38
Impaired Financing Receivable, with Related Allowance, Interest Income, Accrual Method	0	0	0	1
Impaired Financing Receivable, Average Recorded Investment	5,567	1,400	3,199	1,368
Impaired Financing Receivable, Interest Income, Accrual Method	3	6	11	19
Other real estate owned	4,533		4,533		4,488
Available-for-sale securities, gross realized losses			0
Mortgage loans in process of foreclosure, amount	800		800		100
Investor commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment	0	0	0	28
Impaired Financing Receivable, with No Related Allowance, Interest Income, Accrual Method	0	0	0	2
Residential mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	2,018		2,018		1,133
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance	2,130		2,130		1,154
Impaired Financing Receivable Loans With No Specific Related Allowance	0		0		0
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment	1,876	1,146	1,478	1,105
Impaired Financing Receivable, with No Related Allowance, Interest Income, Accrual Method	2	3	6	7
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	0	0	0	20
Impaired Financing Receivable, with Related Allowance, Interest Income, Accrual Method	0	0	0	0
Other real estate owned	100		100		0
Other consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	182		182		149
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance	237		237		178
Impaired Financing Receivable Loans With No Specific Related Allowance	0		0		$ 0
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment	167	254	153	197
Impaired Financing Receivable, with No Related Allowance, Interest Income, Accrual Method	1	3	5	9
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	0	0	0	18
Impaired Financing Receivable, with Related Allowance, Interest Income, Accrual Method	0	0	0	1
Commercial and industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	3,524	0	1,568	0
Impaired Financing Receivable, with Related Allowance, Interest Income, Accrual Method	$ 0	$ 0	$ 0	$ 0

Amount of allowance for credit losses related to recorded investment not with a specific valuation allowance.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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This item represents the gross loss realized on the sale of debt or equity securities categorized neither as held-to-maturity nor trading securities.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
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Average 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://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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Amount of interest income recognized that the financing receivables (with related allowance for credit losses and without a related allowance for credit losses) were impaired.

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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

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-Publisher FASB
-Name Accounting Standards Codification
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Amount of allowance for credit losses related to recorded investment.

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Amount of unpaid principal balance of impaired financing receivables with related allowance for credit losses and without related allowance for credit losses.

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Amount of average investment of impaired financing receivables for which there is no related allowance for credit losses.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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-Section 50
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-URI http://asc.fasb.org/extlink&oid=49124121&loc=d3e5258-111524

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Amount of interest income, recognized on accrual basis, on financing receivables that are recognized as impaired, for which there is no related allowance for credit losses.

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Amount of investment in impaired financing receivables for which there is no related allowance for credit losses.

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Amount of unpaid principal balance of impaired financing receivables for which there is no related allowance for credit losses.

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Amount of average investment of impaired financing receivables for which there is a related allowance for credit losses.

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Amount of interest income, recognized on accrual basis, on financing receivables, for which there is a related allowance for credit losses and are recognized as impaired.

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- Definition

Recorded investment of consumer mortgage loan receivables secured by residential real estate properties for which formal foreclosure proceedings are in process.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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-Paragraph 35
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Carrying amount of 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 does not include real estate assets taken in settlement of troubled loans through surrender or foreclosure.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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