Fair Value - Changes in Level 3 assets (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Total gains or losses (realized/unrealized)
Included in earnings (or changes in net assets)	$ 8
Significant Unobservable Inputs (Level 3)
Changes in Level 3 assets and liabilities measured at fair value on a recurring basis
Balance at the beginning of the period	1,317	$ 3,807	$ 3,708	$ 0
Transfers to Level 3		1,190		4,997
Total gains or losses (realized/unrealized)
Included in earnings (or changes in net assets)			94
Liquidations	(1,325)		(3,802)
Balance at the end of the period	$ 0	$ 4,997	$ 0	$ 4,997

No definition available.

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- Definition

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

+ References

No definition available.

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- Definition

Amount of gain (loss) recognized in the income statement of financial instrument classified as a derivative asset (liability) after deduction of derivative liability (asset), measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.

+ References

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- Definition

Amount of purchases, (sales), issuances and (settlements) of financial instrument classified as a derivative asset (liability) after deduction of derivative liability (asset), measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.

+ References

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- Definition

Amount of transfers of financial instrument classified as a derivative asset (liability) after deduction of derivative liability (asset) into level 3 of the fair value hierarchy.

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- Definition

Fair value of financial instrument classified as derivative asset (liability) after deduction of derivative liability (asset), measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.

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