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Offsetting Assets and Liabilities (Details) - Interest Rate Swap [Member] - USD ($) $ in Thousands | Jun. 30, 2018 | Dec. 31, 2017
--- | --- | ---
Gross Amounts Recognized, Assets | $ 1,893 | $ 798
Gross Amounts Offset in the Statement of Financial Position, Assets |  |
Net Amounts of Assets Presented in the Statement of Financial Position, Assets | 1,893 | 798
Financial Instruments Recognized, Assets |  |
Cash or Financial Instrument Collateral, Assets |  |
Net Amount, Assets | $ 1,893 | $ 798

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