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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Fair value portion of investment securities, including, but not limited to, marketable securities, derivative financial instruments, and investments accounted for under the equity method.

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Fair Value Measurement - Quantitative Information Related to Significant Unobservable Inputs Utilized to Calculate Fair Value (Details) $ in Thousands	Jun. 30, 2019 USD ($)	Dec. 31, 2018 USD ($)
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Derivative liability	$ 0	$ 10,677
Market Approach
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Equity securities - preferred stock investment	11,116
Level 3 \| Discounted Cash Flow
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Derivative liability	$ 0
Credit Risk \| Level 3 \| Discounted Cash Flow
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Range/Input Value	0.0362