v3.19.1

Financial Derivatives (Futures) (Details) $ in Thousands | 3 Months Ended
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Mar. 31, 2019 USD ($)
Derivative [Line Items] |
Fair Value | $ (11,548)
Short | U.S. Treasury futures |
Derivative [Line Items] |
Notional Amount | (151,600)
Fair Value | $ (2,380)
Remaining Years to Maturity | 2 months 24 days
Short | Eurodollar futures |
Derivative [Line Items] |
Notional Amount | $ (63,000)
Fair Value | $ (74)
Remaining Years to Maturity | 5 months 29 days
Short | Currency futures |
Derivative [Line Items] |
Notional Amount | $ (15,840)
Fair Value | $ 138
Remaining Years to Maturity | 2 months 19 days
Short | Futures |
Derivative [Line Items] |
Notional Amount | $ (230,440)
Fair Value | $ (2,316)
Remaining Years to Maturity | 3 months 20 days

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- Definition Aggregate notional amount specified by the derivative(s). Expressed as an absolute value. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Article 12 -Section 13 -Sentence Column B + Details
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Namespace Prefix: | invest_
Data Type: | xbrli:monetaryItemType
Balance Type: | na
Period Type: | instant

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- Definition Fair values as of the balance sheet date of the net amount of all assets and liabilities resulting from contracts that meet the criteria of being accounted for as derivative instruments. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 45 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=6945355&loc=d3e41228-113958 + Details
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Balance Type: | debit
Period Type: | instant

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- Definition 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. + References No definition available. + Details
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Period Type: | duration

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- Definition Period remaining until the derivative contract matures, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
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- Details
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- Details
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- Details
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Namespace Prefix: |
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- Details
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- Details
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