Derivatives and Hedging Activities - Derivative Financial Instruments (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
Interest rate swaps \| Designated as Hedging Instrument \| Other Assets
Derivatives, Fair Value [Line Items]
Asset Derivative	$ 4,227	$ 1,342
Interest rate swaps \| Designated as Hedging Instrument \| Other Liabilities
Derivatives, Fair Value [Line Items]
Liability Derivative	16,532	3,944
Reported Value Measurement
Derivatives, Fair Value [Line Items]
Derivative assets	4,227	1,342
Derivative liabilities	$ 16,532	$ 3,944

Fair value of liability associated with financial asset or other 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.

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Fair value, after the effects of master netting arrangements, of a financial asset or other 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 assets not subject to a master netting arrangement and not elected to be offset.

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Fair value, after the 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 not subject to a master netting arrangement and not elected to be offset.

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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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