XML 18 R28.htm IDEA: XBRL DOCUMENT
v3.2.0.727

Derivatives (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jun. 30, 2015 | Jun. 30, 2014 | Jun. 30, 2015 | Jun. 30, 2014 | Dec. 31, 2014
Derivative [Line Items] |  |  |  |  |  |
Derivative assets, fair value |  |  |  |  |  | $ 5,727
Derivative liabilities |  | $ (48,240) |  | $ (48,240) |  | (35,898)
Derivative liabilities, fair value |  |  |  |  |  | (35,898)
Derivative assets |  | 20,804 |  | 20,804 |  | 5,727
Notional amount of derivative instruments added |  |  |  | 1,785,000 |  |
Notional amount of derivative instruments terminated |  |  |  | (3,120,000) |  |
Derivatives, notional amount |  | 16,190,000 |  | 16,190,000 |  | 17,525,000
Gain (loss) on derivative instruments, net |  | 17,090 | $ (23,074) | (8,233) | $ (36,496) |
Not Designated as Hedging Instrument [Member] |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |
Derivative assets, aggregate notional amount |  | 1,305,000 |  | 1,305,000 |  | 440,000
Derivative liabilities, aggregate notional amount |  | 14,885,000 |  | 14,885,000 |  | 17,085,000
Forward Contracts [Member] |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |
Derivatives, notional amount |  | $ 800,000 |  | $ 800,000 |  |
Weighted-average Fixed Pay Rate |  | 2.38% |  | 2.38% |  |
Weighted-average Fixed Receive Rate |  | 2.38% |  | 2.38% |  |
Interest Rate Swap [Member] |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |
Derivative assets, fair value |  | $ 20,804 |  | $ 20,804 |  | 5,727
Derivative liabilities, fair value |  | (4,249) |  | (4,249) |  | (3,002)
Interest Rate Swap [Member] | Not Designated as Hedging Instrument [Member] |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |
Derivative assets, aggregate notional amount |  | 1,305,000 |  | 1,305,000 |  | 440,000
Derivative liabilities, aggregate notional amount |  | 885,000 |  | 885,000 |  | 485,000
Eurodollar Future [Member] |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |
Derivative assets, fair value |  | 0 |  | 0 |  |
Derivative liabilities, fair value |  | (43,991) |  | (43,991) |  | (32,896)
Notional amount of derivative instruments added |  |  |  | 0 |  |
Notional amount of derivative instruments terminated |  |  |  | 2,600,000 |  |
Derivatives, notional amount |  | 14,000,000 |  | 14,000,000 |  | 16,600,000
Gain (loss) on derivative instruments, net |  | 2,573 | (11,380) | (13,915) | (15,794) |
Eurodollar Future [Member] | Not Designated as Hedging Instrument [Member] |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |
Derivative assets, aggregate notional amount | [1] | 0 |  | 0 |  |
Derivative liabilities, aggregate notional amount | [1] | 14,000,000 |  | 14,000,000 |  | 16,600,000
Long [Member] | Interest Rate Swap [Member] |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |
Notional amount of derivative instruments added |  |  |  | 50,000 |  |
Notional amount of derivative instruments terminated |  |  |  | 0 |  |
Derivatives, notional amount |  | 325,000 |  | 325,000 |  | 275,000
Gain (loss) on derivative instruments, net |  | (1,746) | 0 | 2,782 | 0 |
Long [Member] | Interest Rate Swap [Member] | Interest Rate Swap Agreements, Maturities in Next 37-48 Months [Member] |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |
Derivatives, notional amount |  | $ 0 |  | $ 0 |  |
Weighted-average Fixed Pay Rate |  | 0.00% |  | 0.00% |  |
Weighted-average Fixed Receive Rate |  | 0.00% |  | 0.00% |  |
Long [Member] | Interest Rate Swap [Member] | Interest Rate Swap Agreements, Maturities in Next 49-60 Months [Member] |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |
Derivatives, notional amount |  | $ 300,000 |  | $ 300,000 |  |
Weighted-average Fixed Pay Rate |  | 1.24% |  | 1.24% |  |
Weighted-average Fixed Receive Rate |  | 1.24% |  | 1.24% |  |
Long [Member] | Interest Rate Swap [Member] | Interest Rate Swap Agreements, Maturities in Next 61-72 Months [Member] |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |
Derivatives, notional amount |  | $ 0 |  | $ 0 |  |
Weighted-average Fixed Pay Rate |  | 0.00% |  | 0.00% |  |
Weighted-average Fixed Receive Rate |  | 0.00% |  | 0.00% |  |
Long [Member] | Interest Rate Swap [Member] | Interest Rate Swap Agreements, Maturities in Next 73-84 Months [Member] |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |
Derivatives, notional amount |  | $ 0 |  | $ 0 |  |
Weighted-average Fixed Pay Rate |  | 0.00% |  | 0.00% |  |
Weighted-average Fixed Receive Rate |  | 0.00% |  | 0.00% |  |
Long [Member] | Interest Rate Swap [Member] | Interest Rate Swap Agreements, Maturities in Next 85-96 Months [Member] |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |
Derivatives, notional amount |  | $ 0 |  | $ 0 |  |
Weighted-average Fixed Pay Rate |  | 0.00% |  | 0.00% |  |
Weighted-average Fixed Receive Rate |  | 0.00% |  | 0.00% |  |
Long [Member] | Interest Rate Swap [Member] | Interest Rate Swap Agreements, Maturities in Next 97-108 Months [Member] |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |
Derivatives, notional amount |  | $ 0 |  | $ 0 |  |
Weighted-average Fixed Pay Rate |  | 0.00% |  | 0.00% |  |
Weighted-average Fixed Receive Rate |  | 0.00% |  | 0.00% |  |
Long [Member] | Interest Rate Swap [Member] | Interest Rate Swap Agreements, Maturities in Next 109-120 Months [Member] |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |
Derivatives, notional amount |  | $ 25,000 |  | $ 25,000 |  |
Weighted-average Fixed Pay Rate |  | 2.71% |  | 2.71% |  |
Weighted-average Fixed Receive Rate |  | 2.71% |  | 2.71% |  |
Short [Member] | Interest Rate Swap [Member] |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |
Notional amount of derivative instruments added |  |  |  | $ 1,735,000 |  |
Notional amount of derivative instruments terminated |  |  |  | (520,000) |  |
Derivatives, notional amount |  | $ 1,865,000 |  | 1,865,000 |  | $ 650,000
Gain (loss) on derivative instruments, net |  | 16,263 | $ (11,694) | 2,900 | $ (20,702) |
Short [Member] | Interest Rate Swap [Member] | Interest Rate Swap Agreements, Maturities in Next 37-48 Months [Member] |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |
Derivatives, notional amount |  | $ 345,000 |  | $ 345,000 |  |
Weighted-average Fixed Pay Rate |  | 1.13% |  | 1.13% |  |
Weighted-average Fixed Receive Rate |  | 1.13% |  | 1.13% |  |
Short [Member] | Interest Rate Swap [Member] | Interest Rate Swap Agreements, Maturities in Next 49-60 Months [Member] |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |
Derivatives, notional amount |  | $ 835,000 |  | $ 835,000 |  |
Weighted-average Fixed Pay Rate |  | 1.77% |  | 1.77% |  |
Weighted-average Fixed Receive Rate |  | 1.77% |  | 1.77% |  |
Short [Member] | Interest Rate Swap [Member] | Interest Rate Swap Agreements, Maturities in Next 61-72 Months [Member] |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |
Derivatives, notional amount |  | $ 0 |  | $ 0 |  |
Weighted-average Fixed Pay Rate |  | 0.00% |  | 0.00% |  |
Weighted-average Fixed Receive Rate |  | 0.00% |  | 0.00% |  |
Short [Member] | Interest Rate Swap [Member] | Interest Rate Swap Agreements, Maturities in Next 73-84 Months [Member] |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |
Derivatives, notional amount |  | $ 75,000 |  | $ 75,000 |  |
Weighted-average Fixed Pay Rate |  | 1.77% |  | 1.77% |  |
Weighted-average Fixed Receive Rate |  | 1.77% |  | 1.77% |  |
Short [Member] | Interest Rate Swap [Member] | Interest Rate Swap Agreements, Maturities in Next 85-96 Months [Member] |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |
Derivatives, notional amount |  | $ 125,000 |  | $ 125,000 |  |
Weighted-average Fixed Pay Rate |  | 1.98% |  | 1.98% |  |
Weighted-average Fixed Receive Rate |  | 1.98% |  | 1.98% |  |
Short [Member] | Interest Rate Swap [Member] | Interest Rate Swap Agreements, Maturities in Next 97-108 Months [Member] |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |
Derivatives, notional amount |  | $ 0 |  | $ 0 |  |
Weighted-average Fixed Pay Rate |  | 0.00% |  | 0.00% |  |
Weighted-average Fixed Receive Rate |  | 0.00% |  | 0.00% |  |
Short [Member] | Interest Rate Swap [Member] | Interest Rate Swap Agreements, Maturities in Next 109-120 Months [Member] |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |
Derivatives, notional amount |  | $ 485,000 |  | $ 485,000 |  |
Weighted-average Fixed Pay Rate |  | 2.96% |  | 2.96% |  |
Weighted-average Fixed Receive Rate |  | 2.96% |  | 2.96% |  |
[1] | The Eurodollar futures aggregate notional amount represents the total notional of the 3-month contracts with expiration dates from 2015 to 2020. The maximum notional outstanding for any future 3-month period did not exceed $1,300,000 as of June 30, 2015 or as of December 31, 2014.

X
- Definition Aggregate notional amount entered into in the period specified by the derivative(s). Expressed as an absolute value. + References No definition available. + Details
Name: | dx_NotionalAmountofDerivativeInstrumentsAdded
Namespace Prefix: | dx_
Data Type: | xbrli:monetaryItemType
Balance Type: | na
Period Type: | duration

X
- Definition Aggregate notional amount terminated in the period specified by the derivative(s). Expressed as an absolute value. + References No definition available. + Details
Name: | dx_NotionalAmountofDerivativeInstrumentsTerminated
Namespace Prefix: | dx_
Data Type: | xbrli:monetaryItemType
Balance Type: | na
Period Type: | duration

X
- 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
Name: | invest_DerivativeNotionalAmount
Namespace Prefix: | invest_
Data Type: | xbrli:monetaryItemType
Balance Type: | na
Period Type: | instant

X
- Definition Nominal or face amount used to calculate payments on the derivative asset. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 1A -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=35706170&loc=SL5579245-113959 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Notional Amount -URI http://asc.fasb.org/extlink&oid=6519104 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 1B -URI http://asc.fasb.org/extlink&oid=35706170&loc=SL5580258-113959 + Details
Name: | us-gaap_DerivativeAssetNotionalAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | na
Period Type: | instant

X
- Definition 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. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 50 -Paragraph 3 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=34720828&loc=SL20225862-175312 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 45 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=6945355&loc=d3e41271-113958 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 10 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=35750535&loc=d3e13433-108611 Reference 4: http://www.xbrl.org/2003/role/presentationRef -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 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 15 -URI http://asc.fasb.org/extlink&oid=35750535&loc=d3e13495-108611 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 55 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=36459792&loc=SL20226008-175313 + Details
Name: | us-gaap_DerivativeAssets
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Average fixed interest rate related to the group of interest rate derivatives. + References No definition available. + Details
Name: | us-gaap_DerivativeAverageFixedInterestRate
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Fair value as of the balance sheet date of derivative instrument not designated as hedging instrument and classified as an asset. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4B -Subparagraph (c)(2) -URI http://asc.fasb.org/extlink&oid=35706170&loc=SL5624163-113959 + Details
Name: | us-gaap_DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsAssetAtFairValue
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of realized and unrealized gain (loss) of derivative instruments not designated or qualifying as hedging instruments. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4C -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=35706170&loc=SL5624171-113959 + Details
Name: | us-gaap_DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Fair value as of the balance sheet date of derivative instrument not designated as hedging instrument and classified as a liability. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4B -Subparagraph (c)(2) -URI http://asc.fasb.org/extlink&oid=35706170&loc=SL5624163-113959 + Details
Name: | us-gaap_DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsLiabilityAtFairValue
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition 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. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 55 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=36459792&loc=SL20226008-175313 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 15 -URI http://asc.fasb.org/extlink&oid=35750535&loc=d3e13495-108611 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 50 -Paragraph 3 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=34720828&loc=SL20225862-175312 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 10 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=35750535&loc=d3e13433-108611 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 45 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=6945355&loc=d3e41271-113958 Reference 6: http://www.xbrl.org/2003/role/presentationRef -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
Name: | us-gaap_DerivativeLiabilities
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Nominal or face amount used to calculate payments on the derivative liability. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 1B -URI http://asc.fasb.org/extlink&oid=35706170&loc=SL5580258-113959 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Notional Amount -URI http://asc.fasb.org/extlink&oid=6519104 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 1A -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=35706170&loc=SL5579245-113959 + Details
Name: | us-gaap_DerivativeLiabilityNotionalAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | na
Period Type: | instant

X
- 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
Name: | us-gaap_DerivativeLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_HedgingDesignationAxis=us-gaap_NondesignatedMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DerivativeInstrumentRiskAxis=us-gaap_ForwardContractsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DerivativeInstrumentRiskAxis=us-gaap_InterestRateSwapMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DerivativeInstrumentRiskAxis=us-gaap_EurodollarFutureMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_PositionAxis=us-gaap_LongMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | dx_DerivativeInstrumentMaturityScheduleAxis=dx_InterestRateSwapAgreementsMaturitiesinNext3748MonthsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | dx_DerivativeInstrumentMaturityScheduleAxis=dx_InterestRateSwapAgreementsMaturitiesinNext4960MonthsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | dx_DerivativeInstrumentMaturityScheduleAxis=dx_InterestRateSwapAgreementsMaturitiesinNext6172MonthsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | dx_DerivativeInstrumentMaturityScheduleAxis=dx_InterestRateSwapAgreementsMaturitiesinNext7384MonthsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | dx_DerivativeInstrumentMaturityScheduleAxis=dx_InterestRateSwapAgreementsMaturitiesinNext8596MonthsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | dx_DerivativeInstrumentMaturityScheduleAxis=dx_InterestRateSwapAgreementsMaturitiesinNext97108MonthsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | dx_DerivativeInstrumentMaturityScheduleAxis=dx_InterestRateSwapAgreementsMaturitiesinNext109120MonthsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_PositionAxis=us-gaap_ShortMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |