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Fair Value Measurements - Assets and Liabilities Measured at Fair Value, Recurring (Details) (USD $) | 12 Months Ended
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Dec. 31, 2013 | Dec. 31, 2012
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Net fair value adjustments for interest rate caps | $ 0 | $ 9,000
Assets: |  |
Securities available for sale, at fair value | 705,751,000 | 704,403,000
Transfers between levels 1, 2 and 3 | 0 |
GSE collateralized mortgage obligations |  |
Assets: |  |
Securities available for sale, at fair value | 274,101,000 | 254,912,000
Mortgage-backed securities |  |
Assets: |  |
Securities available for sale, at fair value | 404,996,000 | 425,540,000
Trust preferred securities |  |
Assets: |  |
Securities available for sale, at fair value | 3,697,000 | 3,837,000
Municipal bonds |  |
Assets: |  |
Securities available for sale, at fair value | 5,936,000 | 5,118,000
Mutual funds |  |
Assets: |  |
Securities available for sale, at fair value | 17,021,000 | 14,996,000
Recurring basis | Estimate of Fair Value | GSE collateralized mortgage obligations |  |
Assets: |  |
Securities available for sale, at fair value | 274,101,000 | 254,912,000
Recurring basis | Estimate of Fair Value | Mortgage-backed securities |  |
Assets: |  |
Securities available for sale, at fair value | 404,996,000 | 425,540,000
Recurring basis | Estimate of Fair Value | Trust preferred securities |  |
Assets: |  |
Securities available for sale, at fair value | 3,697,000 | 3,837,000
Recurring basis | Estimate of Fair Value | Municipal bonds |  |
Assets: |  |
Securities available for sale, at fair value | 5,936,000 | 5,118,000
Recurring basis | Estimate of Fair Value | Mutual funds |  |
Assets: |  |
Securities available for sale, at fair value | 17,021,000 | 14,996,000
Recurring basis | Quoted Prices in Active Markets for Identical Assets (Level 1) | GSE collateralized mortgage obligations |  |
Assets: |  |
Securities available for sale, at fair value | 0 | 0
Recurring basis | Quoted Prices in Active Markets for Identical Assets (Level 1) | Mortgage-backed securities |  |
Assets: |  |
Securities available for sale, at fair value | 0 | 0
Recurring basis | Quoted Prices in Active Markets for Identical Assets (Level 1) | Trust preferred securities |  |
Assets: |  |
Securities available for sale, at fair value | 0 | 0
Recurring basis | Quoted Prices in Active Markets for Identical Assets (Level 1) | Municipal bonds |  |
Assets: |  |
Securities available for sale, at fair value | 0 | 0
Recurring basis | Quoted Prices in Active Markets for Identical Assets (Level 1) | Mutual funds |  |
Assets: |  |
Securities available for sale, at fair value | 17,021,000 | 14,996,000
Recurring basis | Significant Other Observable Inputs (Level 2) | GSE collateralized mortgage obligations |  |
Assets: |  |
Securities available for sale, at fair value | 274,101,000 | 254,912,000
Recurring basis | Significant Other Observable Inputs (Level 2) | Mortgage-backed securities |  |
Assets: |  |
Securities available for sale, at fair value | 404,996,000 | 425,540,000
Recurring basis | Significant Other Observable Inputs (Level 2) | Trust preferred securities |  |
Assets: |  |
Securities available for sale, at fair value | 3,697,000 | 3,837,000
Recurring basis | Significant Other Observable Inputs (Level 2) | Municipal bonds |  |
Assets: |  |
Securities available for sale, at fair value | 4,824,000 | 5,118,000
Recurring basis | Significant Other Observable Inputs (Level 2) | Mutual funds |  |
Assets: |  |
Securities available for sale, at fair value | 0 | 0
Recurring basis | Significant Unobservable Inputs (Level 3) | GSE collateralized mortgage obligations |  |
Assets: |  |
Securities available for sale, at fair value | 0 | 0
Recurring basis | Significant Unobservable Inputs (Level 3) | Mortgage-backed securities |  |
Assets: |  |
Securities available for sale, at fair value | 0 | 0
Recurring basis | Significant Unobservable Inputs (Level 3) | Trust preferred securities |  |
Assets: |  |
Securities available for sale, at fair value | 0 | 0
Recurring basis | Significant Unobservable Inputs (Level 3) | Municipal bonds |  |
Assets: |  |
Securities available for sale, at fair value | 1,112,000 | 0
Recurring basis | Significant Unobservable Inputs (Level 3) | Mutual funds |  |
Assets: |  |
Securities available for sale, at fair value | $ 0 | $ 0

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- Definition Amount of investment in debt and equity securities categorized neither as held-to-maturity nor trading. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 25 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=28360136&loc=d3e22054-111558 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 5 -Subparagraph (aa) -URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27232-111563 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6871852&loc=d3e26610-111562 + Details
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- Definition Amount of realized and unrealized gain (loss) of derivative instruments not designated or qualifying as hedging instruments. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4C -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=7476318&loc=SL5624171-113959 + Details
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