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Loans Receivable and Allowance for Loan Losses (Troubled Debt Restructurings) (Details) $ in Thousands | 12 Months Ended
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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 |

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- Definition Loans Identified as Troubled Debt Restructurings during the period. + References No definition available. + Details
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- Definition The number of new loans identified as troubled debt restructurings during the period. + References No definition available. + Details
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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 + Details
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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 + Details
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- Definition Reflects the amount of the write-down related to a troubled debt restructuring. + 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 + Details
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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 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=66008989&loc=d3e5212-111524 + Details
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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 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 10 -Section S99 -Paragraph 6 -Subparagraph (SX 210.5-04.(c) Schedule IV) -URI http://asc.fasb.org/extlink&oid=27047687&loc=d3e5864-122674 + Details
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