Loans Receivable and Allowance for Loan Losses (Troubled Debt Restructurings) (Details) $ in Thousands	12 Months Ended
Dec. 31, 2016 USD ($) loan	Dec. 31, 2015 USD ($) loan	Dec. 31, 2014 USD ($)
Troubled Debt Restructuring, Debtor, Subsequent Periods [Line Items]
Impaired Financing Receivable, Related Allowance		$ 1,613
Mortgage Loans on Real Estate, Foreclosures	$ 5,000	$ 1,700
Mortgage Loans on Real Estate, Number of Foreclosures \| loan	1	1
Foreclosed Real Estate Expense	$ 680	$ 911	$ 1,555
Troubled Debt Restructured Loans [Member]
Troubled Debt Restructuring, Debtor, Subsequent Periods [Line Items]
Financing Receivable, Modifications, Post-Modification Recorded Investment	1,500	6,800
New Loans Identified as Troubled Debt Restructurings		$ 176
New Loans Identified as Troubled Debt Restructurings, Number of Loans \| loan		2
Financing Receivables, Impaired, Troubled Debt Restructuring, Write-down	2,600	$ 1,300
Financing Receivable, Modifications, Recorded Investment		82
Impaired Financing Receivable, Related Allowance	$ 0	1,613
Foreclosed Real Estate Expense		$ 322

The number of mortgage loans on real estate which were foreclosed on during the reporting period.

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- Definition

Loans Identified as Troubled Debt Restructurings during the period.

+ References

No definition available.

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- Definition

The number of new loans identified as troubled debt restructurings during the period.

+ References

No definition available.

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- Definition

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

+ References

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=66008989&loc=SL6953676-111524

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- Definition

The amount of the outstanding recorded investment related to financing receivables that have been modified by troubled debt restructurings.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 40
-Section 50
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=25495931&loc=d3e18845-111554

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Recorded Investment
-URI http://asc.fasb.org/extlink&oid=65880944

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- Definition

Reflects the amount of the write-down related to a troubled debt restructuring.

+ References

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- Definition

Amount of expense recognized during the period for the foreclosure on real estate assets.

+ References

No definition available.

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- Definition

Amount of allowance for credit losses related to recorded investment.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Recorded Investment
-URI http://asc.fasb.org/extlink&oid=65880944

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 15
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-URI http://asc.fasb.org/extlink&oid=66008989&loc=d3e5212-111524

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- Definition

The amount of mortgage loans on real estate which were foreclosed on during the reporting period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 948
-SubTopic 310
-Section S99
-Paragraph 1
-Subparagraph (SX 210.12-29.6)
-URI http://asc.fasb.org/extlink&oid=6589523&loc=d3e617274-123014

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 205
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-Section S99
-Paragraph 6
-Subparagraph (SX 210.5-04.(c) Schedule IV)
-URI http://asc.fasb.org/extlink&oid=27047687&loc=d3e5864-122674

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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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No definition available.

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