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Derivative Financial Instruments and Hedging Activities - Offsetting of Liabilities (Details) - USD ($) $ in Thousands | Jun. 30, 2015 | Dec. 31, 2014
--- | --- | ---
Offsetting Liabilities [Line Items] |  |
Gross Amounts of Recognized Liabilities | $ 1,631 | $ 1,996
Gross Amounts Offset in the Statements of Condition | 0 | 0
Net Amounts of Liabilities Presented in the Statements of Condition | 1,631 | 1,996
Gross Amounts Not Offset in the Statements of Condition, Financial Instruments | (116) | (61)
Gross Amounts Not Offset in the Statements of Condition, Cash Collateral Pledged | (1,515) | (1,740)
Net Amount | 0 | 195
Interest rate swap | Other liabilities |  |
Offsetting Liabilities [Line Items] |  |
Accrued interest on derivative liability interest swaps | 35 | 40
Counterparty A |  |
Offsetting Liabilities [Line Items] |  |
Gross Amounts of Recognized Liabilities | 1,301 | 1,616
Gross Amounts Offset in the Statements of Condition | 0 | 0
Net Amounts of Liabilities Presented in the Statements of Condition | 1,301 | 1,616
Gross Amounts Not Offset in the Statements of Condition, Financial Instruments | (116) | (61)
Gross Amounts Not Offset in the Statements of Condition, Cash Collateral Pledged | (1,185) | (1,360)
Net Amount | 0 | 195
Counterparty B |  |
Offsetting Liabilities [Line Items] |  |
Gross Amounts of Recognized Liabilities | 330 | 380
Gross Amounts Offset in the Statements of Condition | 0 | 0
Net Amounts of Liabilities Presented in the Statements of Condition | 330 | 380
Gross Amounts Not Offset in the Statements of Condition, Financial Instruments | 0 | 0
Gross Amounts Not Offset in the Statements of Condition, Cash Collateral Pledged | (330) | (380)
Net Amount | $ 0 | $ 0

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- Definition Amount of right to receive cash collateral under master netting arrangements that have not been offset against derivative liabilities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 55 -Paragraph 13 -URI http://asc.fasb.org/extlink&oid=51825145&loc=SL20226016-175313 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 50 -Paragraph 3 -Subparagraph (d)(2) -URI http://asc.fasb.org/extlink&oid=51824906&loc=SL20225862-175312 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 8 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=56946850&loc=d3e41678-113959 + Details
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- Definition Amount of right to receive securities collateral under master netting arrangements that have not been offset against derivative liabilities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 55 -Paragraph 13 -URI http://asc.fasb.org/extlink&oid=51825145&loc=SL20226016-175313 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 50 -Paragraph 3 -Subparagraph (d)(2) -URI http://asc.fasb.org/extlink&oid=51824906&loc=SL20225862-175312 + Details
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- Definition Fair value, before effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes liabilities elected not to be offset. Excludes liabilities not subject to a master netting arrangement. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 860 -SubTopic 20 -Section 50 -Paragraph 4D -Subparagraph (c)(2) -URI http://asc.fasb.org/extlink&oid=51814546&loc=SL51823488-111719 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 50 -Paragraph 3 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=51824906&loc=SL20225862-175312 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4B -Subparagraph (a),(c) -URI http://asc.fasb.org/extlink&oid=56946850&loc=SL5624163-113959 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 55 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=51825145&loc=SL20226000-175313 + Details
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