$MFA
MFA FINANCIAL, INC. Stock $mfa

$mfa Overview Financials Valuation SEC Filings Company Website

2014 Q1 Form 10-K Financial Statement

#000105516014000036 Filed on February 13, 2014

Income Statement

Concept	2014 Q1	2013	2012 Q4
Revenue	$121.2M	$482.9M	$125.0M
YoY Change	-1.27%	-3.25%	0.79%
Cost Of Revenue	$40.90M	$164.0M	$3.900M
YoY Change	1.74%	-4.48%	8.33%
Gross Profit	$86.70M	$340.7M	$124.0M
YoY Change	1.05%	-2.41%	0.57%
Gross Profit Margin	71.55%	70.55%	99.23%
Selling, General & Admin	$10.10M	$35.90M	$15.60M
YoY Change	18.82%	-12.65%	129.41%
% of Gross Profit	11.65%	10.54%	12.58%
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	$300.0K	$5.800M	$1.000M
YoY Change	-72.73%	65.71%	150.0%
% of Gross Profit	0.35%	1.7%	0.81%
Operating Expenses	$10.50M	$36.00M	$54.80M
YoY Change	25.0%	-12.2%	30.48%
Operating Profit	$76.20M	$304.7M	$69.20M
YoY Change	-1.55%	-1.1%	-14.88%
Interest Expense	$40.92M	$164.0M	$43.05M
YoY Change	1.9%	-4.46%	10.93%
% of Operating Profit	53.7%	53.83%	62.22%
Other Income/Expense, Net	-$416.0K		$0.00
YoY Change			-100.0%
Pretax Income	$76.20M	$302.7M	$69.20M
YoY Change	-1.55%	-1.34%	-1.98%
Income Tax	$0.00	$0.00	$0.00
% Of Pretax Income	0.0%	0.0%	0.0%
Net Earnings	$76.19M	$302.7M	$69.22M
YoY Change	-1.5%	-1.35%	-1.91%
Net Earnings / Revenue	62.87%	62.68%	55.39%
Basic Earnings Per Share
Diluted Earnings Per Share	$207.0K	$835.3K	$193.6K
COMMON SHARES
Basic Shares Outstanding	366.6M shares		357.5M shares
Diluted Shares Outstanding

Balance Sheet

Concept	2014 Q1	2013	2012 Q4
SHORT-TERM ASSETS
Cash & Short-Term Investments	$275.0M	$565.0M	$401.0M
YoY Change	-54.32%	40.9%	1.78%
Cash & Equivalents	$274.7M	$565.0M	$401.3M
Short-Term Investments
Other Short-Term Assets
YoY Change
Inventory
Prepaid Expenses
Receivables
Other Receivables
Total Short-Term Assets	$312.0M	$601.0M	$445.0M
YoY Change	-51.55%	35.06%	1.83%
LONG-TERM ASSETS
Property, Plant & Equipment
YoY Change
Goodwill	$7.189M		$7.189M
YoY Change	0.0%		0.0%
Intangibles
YoY Change
Long-Term Investments	$12.32B	$11.76B	$13.02B
YoY Change	-4.85%	-9.69%	16.02%
Other Assets	$26.00M	$38.00M	$5.000M
YoY Change	420.0%	660.0%	-68.75%
Total Long-Term Assets	$12.48B	$11.87B	$13.07B
YoY Change	-4.06%	-9.19%	15.55%
TOTAL ASSETS
Total Short-Term Assets	$312.0M	$601.0M	$445.0M
Total Long-Term Assets	$12.48B	$11.87B	$13.07B
Total Assets	$12.79B	$12.47B	$13.52B
YoY Change	-6.3%	-7.74%	15.04%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable
YoY Change
Accrued Expenses	$12.00M	$15.00M	$16.00M
YoY Change	-7.69%	-6.25%	77.78%
Deferred Revenue
YoY Change
Short-Term Debt	$8.606B	$8.339B	$9.499B
YoY Change	-9.84%	-12.21%	9.32%
Long-Term Debt Due
YoY Change
Total Short-Term Liabilities	$8.698B	$8.441B	$9.628B
YoY Change	-11.45%	-12.33%	9.12%
LONG-TERM LIABILITIES
Long-Term Debt	$393.0M	$466.0M	$0.00
YoY Change
Other Long-Term Liabilities	$498.0M	$423.0M	$578.0M
YoY Change	-11.86%	-26.82%	34.11%
Total Long-Term Liabilities	$891.0M	$889.0M	$578.0M
YoY Change	57.7%	53.81%	34.11%
TOTAL LIABILITIES
Total Short-Term Liabilities	$8.698B	$8.441B	$9.628B
Total Long-Term Liabilities	$891.0M	$889.0M	$578.0M
Total Liabilities	$9.588B	$9.330B	$10.21B
YoY Change	-7.69%	-8.59%	10.31%
SHAREHOLDERS EQUITY
Retained Earnings	-$572.6M		-$260.3M
YoY Change	28.88%		7.1%
Common Stock	$3.662M		$3.575M
YoY Change	2.18%		0.39%
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity	$3.205B	$3.142B	$3.311B
YoY Change
Total Liabilities & Shareholders Equity	$12.79B	$12.47B	$13.52B
YoY Change	-6.3%	-7.74%	15.04%

Cashflow Statement

Concept	2014 Q1	2013	2012 Q4
OPERATING ACTIVITIES
Net Income	$76.19M	$302.7M	$69.22M
YoY Change	-1.5%	-1.35%	-1.91%
Depreciation, Depletion And Amortization	$300.0K	$5.800M	$1.000M
YoY Change	-72.73%	65.71%	150.0%
Cash From Operating Activities	$48.27M	$298.1M	$77.80M
YoY Change	-32.21%	-3.96%	-12.88%
INVESTING ACTIVITIES
Capital Expenditures	-$100.0K	-$400.0K	$0.00
YoY Change	0.0%	0.0%	-100.0%
Acquisitions
YoY Change
Other Investing Activities	-$434.5M	$1.601B	$131.9M
YoY Change	-224.46%	-346.31%	-53.7%
Cash From Investing Activities	-$434.5M	$1.601B	$131.9M
YoY Change	-224.51%	-346.08%	-53.64%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net	$7.616M	-$61.34M
YoY Change	4.64%	1744.93%
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	$95.58M	-$1.735B	-258.8M
YoY Change	-143.46%	-599.44%	-35.45%
NET CHANGE
Cash From Operating Activities	$48.27M	$298.1M	77.80M
Cash From Investing Activities	-$434.5M	$1.601B	131.9M
Cash From Financing Activities	$95.58M	-$1.735B	-258.8M
Net Change In Cash	-$290.7M	$164.1M	-49.10M
YoY Change	-245.13%	2156.59%	81.18%
FREE CASH FLOW
Cash From Operating Activities	$48.27M	$298.1M	$77.80M
Capital Expenditures	-$100.0K	-$400.0K	$0.00
Free Cash Flow	$48.37M	$298.5M	$77.80M
YoY Change	-32.17%	-3.96%	-13.17%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
CY2012Q4	us-gaap	Accounts Payable Other Current And Noncurrent AccountsPayableOtherCurrentAndNoncurrent	33479000	USD
CY2013Q4	us-gaap	Accounts Payable Other Current And Noncurrent AccountsPayableOtherCurrentAndNoncurrent	6737000	USD
CY2013Q4	us-gaap	Accumulated Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax AccumulatedOtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	752912000	USD
CY2011Q4	us-gaap	Accumulated Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax AccumulatedOtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	55491000	USD
CY2012Q4	us-gaap	Accumulated Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax AccumulatedOtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	824808000	USD
CY2010Q4	us-gaap	Accumulated Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax AccumulatedOtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	393822000	USD
CY2010Q4	us-gaap	Accumulated Other Comprehensive Income Loss Cumulative Changes In Net Gain Loss From Cash Flow Hedges Effect Net Of Tax AccumulatedOtherComprehensiveIncomeLossCumulativeChangesInNetGainLossFromCashFlowHedgesEffectNetOfTax	-139142000	USD
CY2012Q4	us-gaap	Accumulated Other Comprehensive Income Loss Cumulative Changes In Net Gain Loss From Cash Flow Hedges Effect Net Of Tax AccumulatedOtherComprehensiveIncomeLossCumulativeChangesInNetGainLossFromCashFlowHedgesEffectNetOfTax	-62831000	USD
CY2011Q4	us-gaap	Accumulated Other Comprehensive Income Loss Cumulative Changes In Net Gain Loss From Cash Flow Hedges Effect Net Of Tax AccumulatedOtherComprehensiveIncomeLossCumulativeChangesInNetGainLossFromCashFlowHedgesEffectNetOfTax	-114194000	USD
CY2013Q4	us-gaap	Accumulated Other Comprehensive Income Loss Cumulative Changes In Net Gain Loss From Cash Flow Hedges Effect Net Of Tax AccumulatedOtherComprehensiveIncomeLossCumulativeChangesInNetGainLossFromCashFlowHedgesEffectNetOfTax	-15217000	USD
CY2013Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	737695000	USD
CY2012Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	761977000	USD
CY2013Q4	us-gaap	Accumulated Other Comprehensive Income Loss Other Than Temporary Impairment Not Credit Loss Net Of Tax Debt Securities AccumulatedOtherComprehensiveIncomeLossOtherThanTemporaryImpairmentNotCreditLossNetOfTaxDebtSecurities	609000	USD
CY2012Q4	us-gaap	Accumulated Other Comprehensive Income Loss Other Than Temporary Impairment Not Credit Loss Net Of Tax Debt Securities AccumulatedOtherComprehensiveIncomeLossOtherThanTemporaryImpairmentNotCreditLossNetOfTaxDebtSecurities	2600000	USD
CY2013Q4	us-gaap	Additional Paid In Capital AdditionalPaidInCapital	2972369000	USD
CY2012Q4	us-gaap	Additional Paid In Capital AdditionalPaidInCapital	2805724000	USD
CY2012	us-gaap	Adjustments Related To Tax Withholding For Share Based Compensation AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation	2500000	USD
CY2013	us-gaap	Adjustments Related To Tax Withholding For Share Based Compensation AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation	849000	USD
CY2013	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	4158000	USD
CY2012	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	6488000	USD
CY2011	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	4385000	USD
CY2013	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	1200000	shares
CY2011	us-gaap	Asset Impairment Charges AssetImpairmentCharges	0	USD
CY2012	us-gaap	Asset Impairment Charges AssetImpairmentCharges	0	USD
CY2013	us-gaap	Asset Impairment Charges AssetImpairmentCharges	2031000	USD
CY2013Q4	us-gaap	Assets Assets	12471908000	USD
CY2012Q4	us-gaap	Assets Assets	13517550000	USD
CY2013Q4	us-gaap	Available For Sale Securities AvailableForSaleSecurities	11371358000	USD
CY2012Q4	us-gaap	Available For Sale Securities AvailableForSaleSecurities	12607625000	USD
CY2013Q4	us-gaap	Available For Sale Securities Amortized Cost AvailableForSaleSecuritiesAmortizedCost	10618446000	USD
CY2012Q4	us-gaap	Available For Sale Securities Amortized Cost AvailableForSaleSecuritiesAmortizedCost	11782817000	USD
CY2013	us-gaap	Available For Sale Securities Continuous Unrealized Loss Position12 Months Or Longer Aggregate Losses AvailableForSaleSecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAggregateLosses	16049000	USD
CY2013	us-gaap	Available For Sale Securities Continuous Unrealized Loss Position Aggregate Losses AvailableForSaleSecuritiesContinuousUnrealizedLossPositionAggregateLosses	96034000	USD
CY2013Q4	us-gaap	Available For Sale Securities Continuous Unrealized Loss Position Fair Value AvailableForSaleSecuritiesContinuousUnrealizedLossPositionFairValue	2872513000	USD
CY2013	us-gaap	Available For Sale Securities Continuous Unrealized Loss Position Less Than12 Months Aggregate Losses AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAggregateLosses	79985000	USD
CY2013Q4	us-gaap	Available For Sale Securities Continuous Unrealized Loss Position Less Than Twelve Months Fair Value AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue	2553806000	USD
CY2013Q4	us-gaap	Available For Sale Securities Continuous Unrealized Loss Position Twelve Months Or Longer Fair Value AvailableForSaleSecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue	318707000	USD
CY2013	us-gaap	Available For Sale Securities Gross Unrealized Gains AvailableForSaleSecuritiesGrossUnrealizedGains	848946000	USD
CY2012	us-gaap	Available For Sale Securities Gross Unrealized Gains AvailableForSaleSecuritiesGrossUnrealizedGains	832560000	USD
CY2013	us-gaap	Available For Sale Securities Gross Unrealized Loss AvailableForSaleSecuritiesGrossUnrealizedLoss	96034000	USD
CY2012	us-gaap	Available For Sale Securities Gross Unrealized Loss AvailableForSaleSecuritiesGrossUnrealizedLoss	7752000	USD
CY2013Q4	us-gaap	Available For Sale Securities In Unrealized Loss Positions Qualitative Disclosure Number Of Positions Less Than One Year AvailableForSaleSecuritiesInUnrealizedLossPositionsQualitativeDisclosureNumberOfPositionsLessThanOneYear	270	Security
CY2013	us-gaap	Availableforsale Securities Gross Realized Gain Loss Excluding Other Than Temporary Impairments AvailableforsaleSecuritiesGrossRealizedGainLossExcludingOtherThanTemporaryImpairments	25825000	USD
CY2012	us-gaap	Availableforsale Securities Gross Realized Gain Loss Excluding Other Than Temporary Impairments AvailableforsaleSecuritiesGrossRealizedGainLossExcludingOtherThanTemporaryImpairments	9001000	USD
CY2011Q4	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.270
CY2011Q2	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.250
CY2011	us-gaap	Availableforsale Securities Gross Realized Gain Loss Excluding Other Than Temporary Impairments AvailableforsaleSecuritiesGrossRealizedGainLossExcludingOtherThanTemporaryImpairments	6730000	USD
CY2013Q2	us-gaap	Availableforsale Securities Gross Realized Gain Loss Excluding Other Than Temporary Impairments AvailableforsaleSecuritiesGrossRealizedGainLossExcludingOtherThanTemporaryImpairments	4365000	USD
CY2013Q3	us-gaap	Availableforsale Securities Gross Realized Gain Loss Excluding Other Than Temporary Impairments AvailableforsaleSecuritiesGrossRealizedGainLossExcludingOtherThanTemporaryImpairments	13680000	USD
CY2013Q1	us-gaap	Availableforsale Securities Gross Realized Gain Loss Excluding Other Than Temporary Impairments AvailableforsaleSecuritiesGrossRealizedGainLossExcludingOtherThanTemporaryImpairments	1633000	USD
CY2013Q4	us-gaap	Availableforsale Securities Gross Realized Gain Loss Excluding Other Than Temporary Impairments AvailableforsaleSecuritiesGrossRealizedGainLossExcludingOtherThanTemporaryImpairments	6147000	USD
CY2012Q3	us-gaap	Availableforsale Securities Gross Realized Gain Loss Excluding Other Than Temporary Impairments AvailableforsaleSecuritiesGrossRealizedGainLossExcludingOtherThanTemporaryImpairments	4279000	USD
CY2012Q1	us-gaap	Availableforsale Securities Gross Realized Gain Loss Excluding Other Than Temporary Impairments AvailableforsaleSecuritiesGrossRealizedGainLossExcludingOtherThanTemporaryImpairments	2953000	USD
CY2012Q4	us-gaap	Availableforsale Securities Gross Realized Gain Loss Excluding Other Than Temporary Impairments AvailableforsaleSecuritiesGrossRealizedGainLossExcludingOtherThanTemporaryImpairments	1769000	USD
CY2012Q2	us-gaap	Availableforsale Securities Gross Realized Gain Loss Excluding Other Than Temporary Impairments AvailableforsaleSecuritiesGrossRealizedGainLossExcludingOtherThanTemporaryImpairments	0	USD
CY2013	us-gaap	Availableforsale Securities Gross Unrealized Gain Loss1 AvailableforsaleSecuritiesGrossUnrealizedGainLoss1	752912000	USD
CY2012	us-gaap	Availableforsale Securities Gross Unrealized Gain Loss1 AvailableforsaleSecuritiesGrossUnrealizedGainLoss1	824808000	USD
CY2013Q4	us-gaap	Availableforsale Securities In Unrealized Loss Positions Qualitative Disclosure Number Of Positions Greater Than Or Equal To One Year AvailableforsaleSecuritiesInUnrealizedLossPositionsQualitativeDisclosureNumberOfPositionsGreaterThanOrEqualToOneYear	68	Security
CY2013Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	565370000	USD
CY2012Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	401293000	USD
CY2010Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	345243000	USD
CY2011Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	394022000	USD
CY2012Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		USD
CY2013Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		USD
CY2012Q2	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.230
CY2013Q2	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.22
CY2013Q3	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.28
CY2012Q3	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.210
CY2013Q3	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.22
CY2013Q1	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.50
CY2013Q1	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.22
CY2012Q4	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.200
CY2013Q4	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.20
CY2011Q3	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.250
CY2011Q1	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.235
CY2012Q1	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.240
CY2012Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.01
CY2013Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.01
CY2013Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	886950000	shares
CY2012Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	895000000	shares
CY2012Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	357546000	shares
CY2013Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	365125000	shares
CY2013Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	365125000	shares
CY2012Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	357546000	shares
CY2013Q4	us-gaap	Common Stock Value CommonStockValue	3651000	USD
CY2012Q4	us-gaap	Common Stock Value CommonStockValue	3575000	USD
CY2011	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	3031000	USD
CY2013	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	278427000	USD
CY2012	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	1127519000	USD
CY2013	us-gaap	Costs And Expenses CostsAndExpenses	37970000	USD
CY2011	us-gaap	Costs And Expenses CostsAndExpenses	31179000	USD
CY2012	us-gaap	Costs And Expenses CostsAndExpenses	41069000	USD
CY2013Q2	us-gaap	Costs And Expenses CostsAndExpenses	10845000	USD
CY2013Q3	us-gaap	Costs And Expenses CostsAndExpenses	10759000	USD
CY2013Q1	us-gaap	Costs And Expenses CostsAndExpenses	8453000	USD
CY2013Q4	us-gaap	Costs And Expenses CostsAndExpenses	7913000	USD
CY2012Q4	us-gaap	Costs And Expenses CostsAndExpenses	15638000	USD
CY2012Q3	us-gaap	Costs And Expenses CostsAndExpenses	8650000	USD
CY2012Q2	us-gaap	Costs And Expenses CostsAndExpenses	8366000	USD
CY2012Q1	us-gaap	Costs And Expenses CostsAndExpenses	8415000	USD
CY2011	us-gaap	Depreciation And Amortization DepreciationAndAmortization	2664000	USD
CY2012	us-gaap	Depreciation And Amortization DepreciationAndAmortization	3534000	USD
CY2013	us-gaap	Depreciation And Amortization DepreciationAndAmortization	5831000	USD
CY2013Q4	us-gaap	Derivative Asset Fair Value Gross Liability DerivativeAssetFairValueGrossLiability	0	USD
CY2012Q4	us-gaap	Derivative Asset Fair Value Gross Liability DerivativeAssetFairValueGrossLiability	0	USD
CY2013Q4	us-gaap	Derivative Collateral Obligation To Return Cash DerivativeCollateralObligationToReturnCash	0	USD
CY2012Q4	us-gaap	Derivative Collateral Obligation To Return Cash DerivativeCollateralObligationToReturnCash	0	USD
CY2013Q4	us-gaap	Derivative Collateral Obligation To Return Securities DerivativeCollateralObligationToReturnSecurities	13000000	USD
CY2012Q4	us-gaap	Derivative Collateral Obligation To Return Securities DerivativeCollateralObligationToReturnSecurities	203000	USD
CY2013Q4	us-gaap	Derivative Fair Value Of Derivative Asset DerivativeFairValueOfDerivativeAsset	13000000	USD
CY2012Q4	us-gaap	Derivative Fair Value Of Derivative Asset DerivativeFairValueOfDerivativeAsset	203000	USD
CY2012Q4	us-gaap	Derivative Fair Value Of Derivative Asset Amount Not Offset Against Collateral DerivativeFairValueOfDerivativeAssetAmountNotOffsetAgainstCollateral	203000	USD
CY2013Q4	us-gaap	Derivative Fair Value Of Derivative Asset Amount Not Offset Against Collateral DerivativeFairValueOfDerivativeAssetAmountNotOffsetAgainstCollateral	13000000	USD
CY2012Q4	us-gaap	Derivative Fair Value Of Derivative Asset Amount Offset Against Collateral DerivativeFairValueOfDerivativeAssetAmountOffsetAgainstCollateral	0	USD
CY2013Q4	us-gaap	Derivative Fair Value Of Derivative Asset Amount Offset Against Collateral DerivativeFairValueOfDerivativeAssetAmountOffsetAgainstCollateral	0	USD
CY2012Q4	us-gaap	Derivative Fair Value Of Derivative Liability DerivativeFairValueOfDerivativeLiability	63034000	USD
CY2013Q4	us-gaap	Derivative Fair Value Of Derivative Liability DerivativeFairValueOfDerivativeLiability	28217000	USD
CY2013	us-gaap	Derivative Instruments Not Designated As Hedging Instruments Gain Loss Net DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet	-7517000	USD
CY2012	us-gaap	Derivative Instruments Not Designated As Hedging Instruments Gain Loss Net DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet	0	USD
CY2011	us-gaap	Derivative Instruments Not Designated As Hedging Instruments Gain Loss Net DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet	0	USD
CY2013Q1	us-gaap	Derivative Instruments Not Designated As Hedging Instruments Gain Loss Net DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet	0	USD
CY2013Q3	us-gaap	Derivative Instruments Not Designated As Hedging Instruments Gain Loss Net DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet	-8724000	USD
CY2013Q4	us-gaap	Derivative Instruments Not Designated As Hedging Instruments Gain Loss Net DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet	1207000	USD
CY2013Q2	us-gaap	Derivative Instruments Not Designated As Hedging Instruments Gain Loss Net DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet	0	USD
CY2013Q4	us-gaap	Derivative Liability Fair Value Of Collateral DerivativeLiabilityFairValueOfCollateral	73900000	USD
CY2012Q4	us-gaap	Derivative Liability Fair Value Of Collateral DerivativeLiabilityFairValueOfCollateral	68900000	USD
CY2013Q4	us-gaap	Derivative Liability Securities Sold Under Agreements To Resell Securities Loaned Amount Offset Against Collateral DerivativeLiabilitySecuritiesSoldUnderAgreementsToResellSecuritiesLoanedAmountOffsetAgainstCollateral	0	USD
CY2012Q4	us-gaap	Derivative Liability Securities Sold Under Agreements To Resell Securities Loaned Amount Offset Against Collateral DerivativeLiabilitySecuritiesSoldUnderAgreementsToResellSecuritiesLoanedAmountOffsetAgainstCollateral	0	USD
CY2012Q4	us-gaap	Derivative Liability Securities Sold Under Agreements To Resell Securities Loaned Asset DerivativeLiabilitySecuritiesSoldUnderAgreementsToResellSecuritiesLoanedAsset	0	USD
CY2013Q4	us-gaap	Derivative Liability Securities Sold Under Agreements To Resell Securities Loaned Asset DerivativeLiabilitySecuritiesSoldUnderAgreementsToResellSecuritiesLoanedAsset	0	USD
CY2012Q4	us-gaap	Derivative Liability Securities Sold Under Agreements To Resell Securities Loaned Collateral Right To Reclaim Cash DerivativeLiabilitySecuritiesSoldUnderAgreementsToResellSecuritiesLoanedCollateralRightToReclaimCash	5016000	USD
CY2013Q4	us-gaap	Derivative Liability Securities Sold Under Agreements To Resell Securities Loaned Collateral Right To Reclaim Cash DerivativeLiabilitySecuritiesSoldUnderAgreementsToResellSecuritiesLoanedCollateralRightToReclaimCash	28217000	USD
CY2013Q4	us-gaap	Derivative Liability Securities Sold Under Agreements To Resell Securities Loaned Collateral Right To Reclaim Securities DerivativeLiabilitySecuritiesSoldUnderAgreementsToResellSecuritiesLoanedCollateralRightToReclaimSecurities	8339297000	USD
CY2012Q4	us-gaap	Derivative Liability Securities Sold Under Agreements To Resell Securities Loaned Collateral Right To Reclaim Securities DerivativeLiabilitySecuritiesSoldUnderAgreementsToResellSecuritiesLoanedCollateralRightToReclaimSecurities	8810490000	USD
CY2013Q4	us-gaap	Derivative Liability Securities Sold Under Agreements To Resell Securities Loaned Gross DerivativeLiabilitySecuritiesSoldUnderAgreementsToResellSecuritiesLoanedGross	8367514000	USD
CY2012Q4	us-gaap	Derivative Liability Securities Sold Under Agreements To Resell Securities Loaned Gross DerivativeLiabilitySecuritiesSoldUnderAgreementsToResellSecuritiesLoanedGross	8815506000	USD
CY2013Q4	us-gaap	Derivative Liability Securities Sold Under Agreements To Resell Securities Loaned Not Subject To Master Netting Arrangement DerivativeLiabilitySecuritiesSoldUnderAgreementsToResellSecuritiesLoanedNotSubjectToMasterNettingArrangement	8367514000	USD
CY2012Q4	us-gaap	Derivative Liability Securities Sold Under Agreements To Resell Securities Loaned Not Subject To Master Netting Arrangement DerivativeLiabilitySecuritiesSoldUnderAgreementsToResellSecuritiesLoanedNotSubjectToMasterNettingArrangement	8815506000	USD
CY2013Q4	us-gaap	Dividends Payable Current DividendsPayableCurrent	73600000	USD
CY2013Q4	us-gaap	Dividends Payable Current And Noncurrent DividendsPayableCurrentAndNoncurrent	73643000	USD
CY2012Q4	us-gaap	Dividends Payable Current And Noncurrent DividendsPayableCurrentAndNoncurrent	72222000	USD
CY2011Q4	us-gaap	Dividends Payable Current And Noncurrent DividendsPayableCurrentAndNoncurrent	97525000	USD
CY2012	us-gaap	Dividends Preferred Stock DividendsPreferredStock	8160000	USD
CY2011	us-gaap	Dividends Preferred Stock DividendsPreferredStock	8160000	USD
CY2013	us-gaap	Dividends Preferred Stock DividendsPreferredStock	13750000	USD
CY2012	us-gaap	Earnings Per Share Basic And Diluted EarningsPerShareBasicAndDiluted	0.83
CY2011	us-gaap	Earnings Per Share Basic And Diluted EarningsPerShareBasicAndDiluted	0.90
CY2013	us-gaap	Earnings Per Share Basic And Diluted EarningsPerShareBasicAndDiluted	0.78
CY2013Q1	us-gaap	Earnings Per Share Basic And Diluted EarningsPerShareBasicAndDiluted	0.21
CY2013Q4	us-gaap	Earnings Per Share Basic And Diluted EarningsPerShareBasicAndDiluted	0.20
CY2013Q3	us-gaap	Earnings Per Share Basic And Diluted EarningsPerShareBasicAndDiluted	0.19
CY2013Q2	us-gaap	Earnings Per Share Basic And Diluted EarningsPerShareBasicAndDiluted	0.19
CY2012Q2	us-gaap	Earnings Per Share Basic And Diluted EarningsPerShareBasicAndDiluted	0.20
CY2012Q4	us-gaap	Earnings Per Share Basic And Diluted EarningsPerShareBasicAndDiluted	0.19
CY2012Q1	us-gaap	Earnings Per Share Basic And Diluted EarningsPerShareBasicAndDiluted	0.23
CY2012Q3	us-gaap	Earnings Per Share Basic And Diluted EarningsPerShareBasicAndDiluted	0.21
CY2012	us-gaap	Gain Loss On Investments GainLossOnInvestments	0	USD
CY2011	us-gaap	Gain Loss On Investments GainLossOnInvestments	0	USD
CY2013	us-gaap	Gain Loss On Investments GainLossOnInvestments	-7517000	USD
CY2012	us-gaap	Gain Loss On Sale Of Properties GainLossOnSaleOfProperties	0	USD
CY2013	us-gaap	Gain Loss On Sale Of Properties GainLossOnSaleOfProperties	0	USD
CY2011	us-gaap	Gain Loss On Sale Of Properties GainLossOnSaleOfProperties	430000	USD
CY2011	us-gaap	Gains Losses On Sales Of Investment Real Estate GainsLossesOnSalesOfInvestmentRealEstate	430000	USD
CY2013	us-gaap	Gains Losses On Sales Of Investment Real Estate GainsLossesOnSalesOfInvestmentRealEstate	0	USD
CY2012	us-gaap	Gains Losses On Sales Of Investment Real Estate GainsLossesOnSalesOfInvestmentRealEstate	0	USD
CY2013Q4	us-gaap	Goodwill Goodwill	7189000	USD
CY2012Q4	us-gaap	Goodwill Goodwill	7189000	USD
CY2013	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	0	USD
CY2012	us-gaap	Increase Decrease In Accrued Interest Receivable Net IncreaseDecreaseInAccruedInterestReceivableNet	1160000	USD
CY2013	us-gaap	Increase Decrease In Accrued Interest Receivable Net IncreaseDecreaseInAccruedInterestReceivableNet	-8180000	USD
CY2011	us-gaap	Increase Decrease In Accrued Interest Receivable Net IncreaseDecreaseInAccruedInterestReceivableNet	4622000	USD
CY2011	us-gaap	Increase Decrease In Interest Payable Net IncreaseDecreaseInInterestPayableNet	1105000	USD
CY2012	us-gaap	Increase Decrease In Interest Payable Net IncreaseDecreaseInInterestPayableNet	6992000	USD
CY2013	us-gaap	Increase Decrease In Interest Payable Net IncreaseDecreaseInInterestPayableNet	13808000	USD
CY2011	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	-783000	USD
CY2012	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	12767000	USD
CY2013	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	5549000	USD
CY2012	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	3820000	USD
CY2013	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	3610000	USD
CY2011	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	-632000	USD
CY2011	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	496747000	USD
CY2012	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	499157000	USD
CY2013	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	482940000	USD
CY2013Q1	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	122738000	USD
CY2013Q4	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	121049000	USD
CY2013Q2	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	120671000	USD
CY2013Q3	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	118482000	USD
CY2012Q2	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	125531000	USD
CY2012Q1	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	123523000	USD
CY2012Q4	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	124968000	USD
CY2012Q3	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	125135000	USD
CY2012	us-gaap	Interest Expense InterestExpense	171670000	USD
CY2011	us-gaap	Interest Expense InterestExpense	149411000	USD
CY2013	us-gaap	Interest Expense InterestExpense	164013000	USD
CY2013Q2	us-gaap	Interest Expense InterestExpense	38478000	USD
CY2013Q4	us-gaap	Interest Expense InterestExpense	43427000	USD
CY2013Q1	us-gaap	Interest Expense InterestExpense	40158000	USD
CY2013Q3	us-gaap	Interest Expense InterestExpense	41950000	USD
CY2012Q3	us-gaap	Interest Expense InterestExpense	45801000	USD
CY2012Q2	us-gaap	Interest Expense InterestExpense	42688000	USD
CY2012Q4	us-gaap	Interest Expense InterestExpense	43054000	USD
CY2012Q1	us-gaap	Interest Expense InterestExpense	40127000	USD
CY2012	us-gaap	Interest Expense Debt InterestExpenseDebt	17106000	USD
CY2013	us-gaap	Interest Expense Debt InterestExpenseDebt	12100000	USD
CY2011	us-gaap	Interest Expense Debt InterestExpenseDebt	11672000	USD
CY2011	us-gaap	Interest Expense Other Long Term Debt InterestExpenseOtherLongTermDebt	0	USD
CY2013	us-gaap	Interest Expense Other Long Term Debt InterestExpenseOtherLongTermDebt	8028000	USD
CY2012	us-gaap	Interest Expense Other Long Term Debt InterestExpenseOtherLongTermDebt	5797000	USD
CY2013	us-gaap	Interest Expense Securities Sold Under Agreements To Repurchase InterestExpenseSecuritiesSoldUnderAgreementsToRepurchase	143885000	USD
CY2012	us-gaap	Interest Expense Securities Sold Under Agreements To Repurchase InterestExpenseSecuritiesSoldUnderAgreementsToRepurchase	148767000	USD
CY2011	us-gaap	Interest Expense Securities Sold Under Agreements To Repurchase InterestExpenseSecuritiesSoldUnderAgreementsToRepurchase	137739000	USD
CY2012	us-gaap	Interest Income Deposits With Financial Institutions InterestIncomeDepositsWithFinancialInstitutions	127000	USD
CY2011	us-gaap	Interest Income Deposits With Financial Institutions InterestIncomeDepositsWithFinancialInstitutions	136000	USD
CY2013	us-gaap	Interest Income Deposits With Financial Institutions InterestIncomeDepositsWithFinancialInstitutions	124000	USD
CY2011	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	347336000	USD
CY2012	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	327487000	USD
CY2013	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	318927000	USD
CY2013Q2	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	82193000	USD
CY2013Q4	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	77622000	USD
CY2013Q3	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	76532000	USD
CY2013Q1	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	82580000	USD
CY2012Q3	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	79334000	USD
CY2012Q2	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	82843000	USD
CY2012Q4	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	81914000	USD
CY2012Q1	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	83396000	USD
CY2012	us-gaap	Interest Paid InterestPaid	161657000	USD
CY2011	us-gaap	Interest Paid InterestPaid	148306000	USD
CY2013	us-gaap	Interest Paid InterestPaid	162186000	USD
CY2012Q4	us-gaap	Interest Payable Current And Noncurrent InterestPayableCurrentAndNoncurrent	16104000	USD
CY2013Q4	us-gaap	Interest Payable Current And Noncurrent InterestPayableCurrentAndNoncurrent	14726000	USD
CY2013Q4	us-gaap	Interest Receivable InterestReceivable	35828000	USD
CY2012Q4	us-gaap	Interest Receivable InterestReceivable	44033000	USD
CY2013Q4	us-gaap	Investment Owned Balance Principal Amount InvestmentOwnedBalancePrincipalAmount	11892957000	USD
CY2012Q4	us-gaap	Investment Owned Balance Principal Amount InvestmentOwnedBalancePrincipalAmount	13302328000	USD
CY2011	us-gaap	Labor And Related Expense LaborAndRelatedExpense	18959000	USD
CY2012	us-gaap	Labor And Related Expense LaborAndRelatedExpense	22089000	USD
CY2013	us-gaap	Labor And Related Expense LaborAndRelatedExpense	20328000	USD
CY2012Q4	us-gaap	Liabilities Liabilities	10206544000	USD
CY2013Q4	us-gaap	Liabilities Liabilities	9329657000	USD
CY2013Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	12471908000	USD
CY2012Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	13517550000	USD
CY2013	us-gaap	Marketable Securities Realized Gain Loss Other Than Temporary Impairments Amount MarketableSecuritiesRealizedGainLossOtherThanTemporaryImpairmentsAmount	0	USD
CY2012	us-gaap	Marketable Securities Realized Gain Loss Other Than Temporary Impairments Amount MarketableSecuritiesRealizedGainLossOtherThanTemporaryImpairmentsAmount	879000	USD
CY2011	us-gaap	Marketable Securities Realized Gain Loss Other Than Temporary Impairments Amount MarketableSecuritiesRealizedGainLossOtherThanTemporaryImpairmentsAmount	45144000	USD
CY2013	us-gaap	Nature Of Operations NatureOfOperations	<div style="font-family:Times New Roman;font-size:10pt;"><div style="line-height:120%;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-weight:bold;">Organization</font></div><div style="line-height:120%;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div><div style="line-height:120%;text-align:justify;text-indent:29px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">MFA Financial, Inc. (the “Company”) was incorporated in Maryland on July 24, 1997 and began operations on April 10, 1998.  The Company has elected to be treated as a real estate investment trust (“REIT”) for U.S. federal income tax purposes.  In order to maintain its qualification as a REIT, the Company must comply with a number of requirements under federal tax law, including that it must distribute at least 90% of its annual REIT taxable income to its sto</font><font style="font-family:inherit;font-size:10pt;">ckholders.  (See Note 11)</font></div></div>
CY2013	us-gaap	Net Cash Provided By Used In Continuing Operations NetCashProvidedByUsedInContinuingOperations	164077000	USD
CY2011	us-gaap	Net Cash Provided By Used In Continuing Operations NetCashProvidedByUsedInContinuingOperations	48779000	USD
CY2012	us-gaap	Net Cash Provided By Used In Continuing Operations NetCashProvidedByUsedInContinuingOperations	7271000	USD
CY2011	us-gaap	Net Cash Provided By Used In Financing Activities Continuing Operations NetCashProvidedByUsedInFinancingActivitiesContinuingOperations	2097729000	USD
CY2013	us-gaap	Net Cash Provided By Used In Financing Activities Continuing Operations NetCashProvidedByUsedInFinancingActivitiesContinuingOperations	-1734612000	USD
CY2012	us-gaap	Net Cash Provided By Used In Financing Activities Continuing Operations NetCashProvidedByUsedInFinancingActivitiesContinuingOperations	347312000	USD
CY2011	us-gaap	Net Cash Provided By Used In Investing Activities Continuing Operations NetCashProvidedByUsedInInvestingActivitiesContinuingOperations	-2383359000	USD
CY2013	us-gaap	Net Cash Provided By Used In Investing Activities Continuing Operations NetCashProvidedByUsedInInvestingActivitiesContinuingOperations	1600601000	USD
CY2012	us-gaap	Net Cash Provided By Used In Investing Activities Continuing Operations NetCashProvidedByUsedInInvestingActivitiesContinuingOperations	-650428000	USD
CY2013	us-gaap	Net Cash Provided By Used In Operating Activities Continuing Operations NetCashProvidedByUsedInOperatingActivitiesContinuingOperations	298088000	USD
CY2012	us-gaap	Net Cash Provided By Used In Operating Activities Continuing Operations NetCashProvidedByUsedInOperatingActivitiesContinuingOperations	310387000	USD
CY2011	us-gaap	Net Cash Provided By Used In Operating Activities Continuing Operations NetCashProvidedByUsedInOperatingActivitiesContinuingOperations	334409000	USD
CY2011	us-gaap	Net Income Loss NetIncomeLoss	316414000	USD
CY2012	us-gaap	Net Income Loss NetIncomeLoss	306839000	USD
CY2013	us-gaap	Net Income Loss NetIncomeLoss	302709000	USD
CY2013Q4	us-gaap	Net Income Loss NetIncomeLoss	78557000	USD
CY2013Q1	us-gaap	Net Income Loss NetIncomeLoss	77351000	USD
CY2013Q2	us-gaap	Net Income Loss NetIncomeLoss	75473000	USD
CY2013Q3	us-gaap	Net Income Loss NetIncomeLoss	71328000	USD
CY2012Q3	us-gaap	Net Income Loss NetIncomeLoss	78141000	USD
CY2012Q4	us-gaap	Net Income Loss NetIncomeLoss	69219000	USD
CY2012Q1	us-gaap	Net Income Loss NetIncomeLoss	84713000	USD
CY2012Q2	us-gaap	Net Income Loss NetIncomeLoss	74766000	USD
CY2013	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	285012000	USD
CY2012	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	298679000	USD
CY2011	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	308254000	USD
CY2013Q3	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	67578000	USD
CY2013Q2	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	67316000	USD
CY2013Q1	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	75311000	USD
CY2013Q4	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	74807000	USD
CY2012Q4	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	67179000	USD
CY2012Q2	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	72726000	USD
CY2012Q3	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	76101000	USD
CY2012Q1	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	82673000	USD
CY2012	us-gaap	Noninterest Income NoninterestIncome	21621000	USD
CY2011	us-gaap	Noninterest Income NoninterestIncome	10827000	USD
CY2013	us-gaap	Noninterest Income NoninterestIncome	21752000	USD
CY2013	us-gaap	Noninterest Income Other Operating Income NoninterestIncomeOtherOperatingIncome	219000	USD
CY2011	us-gaap	Noninterest Income Other Operating Income NoninterestIncomeOtherOperatingIncome	-914000	USD
CY2012	us-gaap	Noninterest Income Other Operating Income NoninterestIncomeOtherOperatingIncome	10000	USD
CY2013Q4	us-gaap	Obligation To Return Securities Received As Collateral ObligationToReturnSecuritiesReceivedAsCollateral	383743000	USD
CY2012Q4	us-gaap	Obligation To Return Securities Received As Collateral ObligationToReturnSecuritiesReceivedAsCollateral	508827000	USD
CY2013Q4	us-gaap	Operating Leases Future Minimum Payments Due OperatingLeasesFutureMinimumPaymentsDue	15947000	USD
CY2013Q4	us-gaap	Operating Leases Future Minimum Payments Due Current OperatingLeasesFutureMinimumPaymentsDueCurrent	2382000	USD
CY2013Q4	us-gaap	Operating Leases Future Minimum Payments Due In Five Years OperatingLeasesFutureMinimumPaymentsDueInFiveYears	2522000	USD
CY2013Q4	us-gaap	Operating Leases Future Minimum Payments Due In Four Years OperatingLeasesFutureMinimumPaymentsDueInFourYears	2522000	USD
CY2013Q4	us-gaap	Operating Leases Future Minimum Payments Due In Three Years OperatingLeasesFutureMinimumPaymentsDueInThreeYears	2552000	USD
CY2013Q4	us-gaap	Operating Leases Future Minimum Payments Due In Two Years OperatingLeasesFutureMinimumPaymentsDueInTwoYears	2397000	USD
CY2013Q4	us-gaap	Operating Leases Future Minimum Payments Due Thereafter OperatingLeasesFutureMinimumPaymentsDueThereafter	3572000	USD
CY2012	us-gaap	Operating Leases Rent Expense Net OperatingLeasesRentExpenseNet	2300000	USD
CY2011	us-gaap	Operating Leases Rent Expense Net OperatingLeasesRentExpenseNet	1700000	USD
CY2013	us-gaap	Operating Leases Rent Expense Net OperatingLeasesRentExpenseNet	2700000	USD
CY2013	us-gaap	Other Asset Impairment Charges OtherAssetImpairmentCharges	2000000	USD
CY2011	us-gaap	Other Comprehensive Income Availableforsale Securities Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent	-338331000	USD
CY2013	us-gaap	Other Comprehensive Income Availableforsale Securities Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent	-71896000	USD
CY2012	us-gaap	Other Comprehensive Income Availableforsale Securities Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent	769317000	USD
CY2013	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-24282000	USD
CY2012	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	820680000	USD
CY2011	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-313383000	USD
CY2012	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax	7493000	USD
CY2011	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax	7500000	USD
CY2013	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax	19833000	USD
CY2011	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Writedown Of Securities Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForWritedownOfSecuritiesNetOfTax	-10570000	USD
CY2013	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Writedown Of Securities Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForWritedownOfSecuritiesNetOfTax	0	USD
CY2012	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Writedown Of Securities Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForWritedownOfSecuritiesNetOfTax	-1200000	USD
CY2013	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax	47614000	USD
CY2012	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax	51363000	USD
CY2011	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax	24948000	USD
CY2012	us-gaap	Other General And Administrative Expense OtherGeneralAndAdministrativeExpense	11480000	USD
CY2013	us-gaap	Other General And Administrative Expense OtherGeneralAndAdministrativeExpense	13361000	USD
CY2011	us-gaap	Other General And Administrative Expense OtherGeneralAndAdministrativeExpense	11250000	USD
CY2012Q4	us-gaap	Other Liabilities OtherLiabilities	6090000	USD
CY2013Q4	us-gaap	Other Liabilities OtherLiabilities	10691000	USD
CY2013	us-gaap	Other Than Temporary Impairment Credit Losses Recognized In Earnings Additions Additional Credit Losses OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsAdditionsAdditionalCreditLosses	0	USD
CY2011	us-gaap	Other Than Temporary Impairment Credit Losses Recognized In Earnings Additions Additional Credit Losses OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsAdditionsAdditionalCreditLosses	3412000	USD
CY2012	us-gaap	Other Than Temporary Impairment Credit Losses Recognized In Earnings Additions Additional Credit Losses OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsAdditionsAdditionalCreditLosses	742000	USD
CY2012	us-gaap	Other Than Temporary Impairment Credit Losses Recognized In Earnings Additions No Previous Impairment OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsAdditionsNoPreviousImpairment	458000	USD
CY2013	us-gaap	Other Than Temporary Impairment Credit Losses Recognized In Earnings Additions No Previous Impairment OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsAdditionsNoPreviousImpairment	0	USD
CY2011	us-gaap	Other Than Temporary Impairment Credit Losses Recognized In Earnings Additions No Previous Impairment OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsAdditionsNoPreviousImpairment	7158000	USD
CY2011Q4	us-gaap	Other Than Temporary Impairment Credit Losses Recognized In Earnings Credit Losses On Debt Securities Held OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsCreditLossesOnDebtSecuritiesHeld	34915000	USD
CY2013Q4	us-gaap	Other Than Temporary Impairment Credit Losses Recognized In Earnings Credit Losses On Debt Securities Held OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsCreditLossesOnDebtSecuritiesHeld	36115000	USD
CY2010Q4	us-gaap	Other Than Temporary Impairment Credit Losses Recognized In Earnings Credit Losses On Debt Securities Held OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsCreditLossesOnDebtSecuritiesHeld	24345000	USD
CY2012Q4	us-gaap	Other Than Temporary Impairment Credit Losses Recognized In Earnings Credit Losses On Debt Securities Held OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsCreditLossesOnDebtSecuritiesHeld	36115000	USD
CY2012	us-gaap	Other Than Temporary Impairment Losses Investments Portion In Other Comprehensive Income Loss Before Tax Portion Attributable To Parent OtherThanTemporaryImpairmentLossesInvestmentsPortionInOtherComprehensiveIncomeLossBeforeTaxPortionAttributableToParent	321000	USD
CY2013	us-gaap	Other Than Temporary Impairment Losses Investments Portion In Other Comprehensive Income Loss Before Tax Portion Attributable To Parent OtherThanTemporaryImpairmentLossesInvestmentsPortionInOtherComprehensiveIncomeLossBeforeTaxPortionAttributableToParent	0	USD
CY2011	us-gaap	Other Than Temporary Impairment Losses Investments Portion In Other Comprehensive Income Loss Before Tax Portion Attributable To Parent OtherThanTemporaryImpairmentLossesInvestmentsPortionInOtherComprehensiveIncomeLossBeforeTaxPortionAttributableToParent	-34574000	USD
CY2011	us-gaap	Other Than Temporary Impairment Losses Investments Portion Recognized In Earnings Net OtherThanTemporaryImpairmentLossesInvestmentsPortionRecognizedInEarningsNet	10570000	USD
CY2013	us-gaap	Other Than Temporary Impairment Losses Investments Portion Recognized In Earnings Net OtherThanTemporaryImpairmentLossesInvestmentsPortionRecognizedInEarningsNet	0	USD
CY2012	us-gaap	Other Than Temporary Impairment Losses Investments Portion Recognized In Earnings Net OtherThanTemporaryImpairmentLossesInvestmentsPortionRecognizedInEarningsNet	1200000	USD
CY2012Q3	us-gaap	Other Than Temporary Impairment Losses Investments Portion Recognized In Earnings Net OtherThanTemporaryImpairmentLossesInvestmentsPortionRecognizedInEarningsNet	0	USD
CY2012Q2	us-gaap	Other Than Temporary Impairment Losses Investments Portion Recognized In Earnings Net OtherThanTemporaryImpairmentLossesInvestmentsPortionRecognizedInEarningsNet	280000	USD
CY2012Q4	us-gaap	Other Than Temporary Impairment Losses Investments Portion Recognized In Earnings Net OtherThanTemporaryImpairmentLossesInvestmentsPortionRecognizedInEarningsNet	0	USD
CY2012Q1	us-gaap	Other Than Temporary Impairment Losses Investments Portion Recognized In Earnings Net OtherThanTemporaryImpairmentLossesInvestmentsPortionRecognizedInEarningsNet	920000	USD
CY2013	us-gaap	Participating Securities Distributed And Undistributed Earnings ParticipatingSecuritiesDistributedAndUndistributedEarnings	1080000	USD
CY2012	us-gaap	Participating Securities Distributed And Undistributed Earnings ParticipatingSecuritiesDistributedAndUndistributedEarnings	1517000	USD
CY2011	us-gaap	Participating Securities Distributed And Undistributed Earnings ParticipatingSecuritiesDistributedAndUndistributedEarnings	1684000	USD
CY2013	us-gaap	Payments For Proceeds From Hedge Financing Activities PaymentsForProceedsFromHedgeFinancingActivities	0	USD
CY2012	us-gaap	Payments For Proceeds From Hedge Financing Activities PaymentsForProceedsFromHedgeFinancingActivities	0	USD
CY2011	us-gaap	Payments For Proceeds From Hedge Financing Activities PaymentsForProceedsFromHedgeFinancingActivities	915000	USD
CY2013	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	16281000	USD
CY2011	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	0	USD
CY2012	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	9713000	USD
CY2013	us-gaap	Payments For Repurchase Of Redeemable Preferred Stock PaymentsForRepurchaseOfRedeemablePreferredStock	96000000	USD
CY2012	us-gaap	Payments For Repurchase Of Redeemable Preferred Stock PaymentsForRepurchaseOfRedeemablePreferredStock	0	USD
CY2011	us-gaap	Payments For Repurchase Of Redeemable Preferred Stock PaymentsForRepurchaseOfRedeemablePreferredStock	0	USD
CY2012	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	341229000	USD
CY2011	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	329261000	USD
CY2013	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	594827000	USD
CY2013	us-gaap	Payments Of Dividends Preferred Stock And Preference Stock PaymentsOfDividendsPreferredStockAndPreferenceStock	13750000	USD
CY2012	us-gaap	Payments Of Dividends Preferred Stock And Preference Stock PaymentsOfDividendsPreferredStockAndPreferenceStock	8160000	USD
CY2011	us-gaap	Payments Of Dividends Preferred Stock And Preference Stock PaymentsOfDividendsPreferredStockAndPreferenceStock	8160000	USD
CY2011	us-gaap	Payments Of Stock Issuance Costs PaymentsOfStockIssuanceCosts	0	USD
CY2013	us-gaap	Payments Of Stock Issuance Costs PaymentsOfStockIssuanceCosts	6684000	USD
CY2012	us-gaap	Payments Of Stock Issuance Costs PaymentsOfStockIssuanceCosts	0	USD
CY2012	us-gaap	Payments To Acquire Available For Sale Securities Debt PaymentsToAcquireAvailableForSaleSecuritiesDebt	3589981000	USD
CY2011	us-gaap	Payments To Acquire Available For Sale Securities Debt PaymentsToAcquireAvailableForSaleSecuritiesDebt	4834169000	USD
CY2013	us-gaap	Payments To Acquire Available For Sale Securities Debt PaymentsToAcquireAvailableForSaleSecuritiesDebt	1744605000	USD
CY2011	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	2343000	USD
CY2012	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	443000	USD
CY2013	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	373000	USD
CY2013Q4	us-gaap	Pledged Assets Not Separately Reported On Statement Of Financial Position PledgedAssetsNotSeparatelyReportedOnStatementOfFinancialPosition	10227092000	USD
CY2012Q4	us-gaap	Pledged Assets Not Separately Reported On Statement Of Financial Position PledgedAssetsNotSeparatelyReportedOnStatementOfFinancialPosition	10624276000	USD
CY2012	us-gaap	Preferred Stock Dividend Rate Percentage PreferredStockDividendRatePercentage	0.085
CY2011	us-gaap	Preferred Stock Dividends Income Statement Impact PreferredStockDividendsIncomeStatementImpact	8160000	USD
CY2012	us-gaap	Preferred Stock Dividends Income Statement Impact PreferredStockDividendsIncomeStatementImpact	8160000	USD
CY2013	us-gaap	Preferred Stock Dividends Income Statement Impact PreferredStockDividendsIncomeStatementImpact	13750000	USD
CY2013Q1	us-gaap	Preferred Stock Dividends Income Statement Impact PreferredStockDividendsIncomeStatementImpact	2040000	USD
CY2013Q3	us-gaap	Preferred Stock Dividends Income Statement Impact PreferredStockDividendsIncomeStatementImpact	3750000	USD
CY2013Q2	us-gaap	Preferred Stock Dividends Income Statement Impact PreferredStockDividendsIncomeStatementImpact	4210000	USD
CY2013Q4	us-gaap	Preferred Stock Dividends Income Statement Impact PreferredStockDividendsIncomeStatementImpact	3750000	USD
CY2012Q2	us-gaap	Preferred Stock Dividends Income Statement Impact PreferredStockDividendsIncomeStatementImpact	2040000	USD
CY2012Q3	us-gaap	Preferred Stock Dividends Income Statement Impact PreferredStockDividendsIncomeStatementImpact	2040000	USD
CY2012Q1	us-gaap	Preferred Stock Dividends Income Statement Impact PreferredStockDividendsIncomeStatementImpact	2040000	USD
CY2012Q4	us-gaap	Preferred Stock Dividends Income Statement Impact PreferredStockDividendsIncomeStatementImpact	2040000	USD
CY2011Q3	us-gaap	Preferred Stock Dividends Per Share Cash Paid PreferredStockDividendsPerShareCashPaid	0.53125
CY2012Q2	us-gaap	Preferred Stock Dividends Per Share Cash Paid PreferredStockDividendsPerShareCashPaid	0.53125
CY2012Q4	us-gaap	Preferred Stock Dividends Per Share Cash Paid PreferredStockDividendsPerShareCashPaid	0.53125
CY2011Q1	us-gaap	Preferred Stock Dividends Per Share Cash Paid PreferredStockDividendsPerShareCashPaid	0.53125
CY2010Q1	us-gaap	Preferred Stock Dividends Per Share Cash Paid PreferredStockDividendsPerShareCashPaid	0.53125
CY2012Q4	us-gaap	Preferred Stock Dividends Per Share Cash Paid PreferredStockDividendsPerShareCashPaid	0.53125
CY2011Q4	us-gaap	Preferred Stock Dividends Per Share Cash Paid PreferredStockDividendsPerShareCashPaid	0.53125
CY2010Q2	us-gaap	Preferred Stock Dividends Per Share Cash Paid PreferredStockDividendsPerShareCashPaid	0.53125
CY2010Q3	us-gaap	Preferred Stock Dividends Per Share Cash Paid PreferredStockDividendsPerShareCashPaid	0.53125
CY2012Q3	us-gaap	Preferred Stock Dividends Per Share Cash Paid PreferredStockDividendsPerShareCashPaid	0.53125
CY2010Q4	us-gaap	Preferred Stock Dividends Per Share Cash Paid PreferredStockDividendsPerShareCashPaid	0.53125
CY2011Q2	us-gaap	Preferred Stock Dividends Per Share Cash Paid PreferredStockDividendsPerShareCashPaid	0.53125
CY2012Q4	us-gaap	Preferred Stock Liquidation Preference PreferredStockLiquidationPreference	25.00
CY2013	us-gaap	Preferred Stock Redemption Premium PreferredStockRedemptionPremium	3947000	USD
CY2011	us-gaap	Preferred Stock Redemption Premium PreferredStockRedemptionPremium	0	USD
CY2012	us-gaap	Preferred Stock Redemption Premium PreferredStockRedemptionPremium	0	USD
CY2013Q2	us-gaap	Preferred Stock Redemption Premium PreferredStockRedemptionPremium	3947000	USD
CY2013Q1	us-gaap	Preferred Stock Redemption Premium PreferredStockRedemptionPremium	0	USD
CY2013Q4	us-gaap	Preferred Stock Redemption Premium PreferredStockRedemptionPremium	0	USD
CY2013Q3	us-gaap	Preferred Stock Redemption Premium PreferredStockRedemptionPremium	0	USD
CY2012Q4	us-gaap	Prepaid Expense And Other Assets PrepaidExpenseAndOtherAssets	30654000	USD
CY2013Q4	us-gaap	Prepaid Expense And Other Assets PrepaidExpenseAndOtherAssets	29719000	USD
CY2013	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	77625000	USD
CY2012	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	13038000	USD
CY2011	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	607803000	USD
CY2013	us-gaap	Proceeds From Issuance Of Preferred Stock And Preference Stock ProceedsFromIssuanceOfPreferredStockAndPreferenceStock	200000000	USD
CY2012	us-gaap	Proceeds From Issuance Of Preferred Stock And Preference Stock ProceedsFromIssuanceOfPreferredStockAndPreferenceStock	0	USD
CY2011	us-gaap	Proceeds From Issuance Of Preferred Stock And Preference Stock ProceedsFromIssuanceOfPreferredStockAndPreferenceStock	0	USD
CY2012	us-gaap	Proceeds From Issuance Of Senior Long Term Debt ProceedsFromIssuanceOfSeniorLongTermDebt	100000000	USD
CY2013	us-gaap	Proceeds From Issuance Of Senior Long Term Debt ProceedsFromIssuanceOfSeniorLongTermDebt	0	USD
CY2011	us-gaap	Proceeds From Issuance Of Senior Long Term Debt ProceedsFromIssuanceOfSeniorLongTermDebt	0	USD
CY2013	us-gaap	Repayments Of Senior Debt RepaymentsOfSeniorDebt	0	USD
CY2011	us-gaap	Repayments Of Senior Debt RepaymentsOfSeniorDebt	0	USD
CY2011	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	2291153000	USD
CY2012	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	2671137000	USD
CY2013	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	2770710000	USD
CY2013	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	574869000	USD
CY2012	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	268859000	USD
CY2011	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	150630000	USD
CY2013	us-gaap	Proceeds From Sale Of Real Estate ProceedsFromSaleOfRealEstate	0	USD
CY2012	us-gaap	Proceeds From Sale Of Real Estate ProceedsFromSaleOfRealEstate	0	USD
CY2011	us-gaap	Proceeds From Sale Of Real Estate ProceedsFromSaleOfRealEstate	11370000	USD
CY2011	us-gaap	Real Estate Revenue Net RealEstateRevenueNet	1566000	USD
CY2013	us-gaap	Real Estate Revenue Net RealEstateRevenueNet	0	USD
CY2012	us-gaap	Real Estate Revenue Net RealEstateRevenueNet	0	USD
CY2012Q4	us-gaap	Securities Held As Collateral At Fair Value SecuritiesHeldAsCollateralAtFairValue	408833000	USD
CY2013Q4	us-gaap	Securities Held As Collateral At Fair Value SecuritiesHeldAsCollateralAtFairValue	383743000	USD
CY2012Q4	us-gaap	Securities Received As Collateral SecuritiesReceivedAsCollateral	408833000	USD
CY2013Q4	us-gaap	Securities Received As Collateral SecuritiesReceivedAsCollateral	383743000	USD
CY2013Q4	us-gaap	Securities Sold Under Agreements To Repurchase SecuritiesSoldUnderAgreementsToRepurchase	8339297000	USD
CY2012Q4	us-gaap	Securities Sold Under Agreements To Repurchase SecuritiesSoldUnderAgreementsToRepurchase	8752472000	USD
CY2012	us-gaap	Repayments Of Senior Debt RepaymentsOfSeniorDebt	3415000	USD
CY2013Q4	us-gaap	Restricted Cash And Cash Equivalents RestrictedCashAndCashEquivalents	37520000	USD
CY2012Q4	us-gaap	Restricted Cash And Cash Equivalents RestrictedCashAndCashEquivalents	5016000	USD
CY2012Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	-260308000	USD
CY2013Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	-571544000	USD
CY2013Q4	us-gaap	Securities Sold Under Agreements To Repurchase Collateral Right To Reclaim Cash SecuritiesSoldUnderAgreementsToRepurchaseCollateralRightToReclaimCash	0	USD
CY2012Q4	us-gaap	Securities Sold Under Agreements To Repurchase Collateral Right To Reclaim Cash SecuritiesSoldUnderAgreementsToRepurchaseCollateralRightToReclaimCash	0	USD
CY2012Q4	us-gaap	Securities Sold Under Agreements To Repurchase Collateral Right To Reclaim Securities SecuritiesSoldUnderAgreementsToRepurchaseCollateralRightToReclaimSecurities	8752472000	USD
CY2013Q4	us-gaap	Securities Sold Under Agreements To Repurchase Collateral Right To Reclaim Securities SecuritiesSoldUnderAgreementsToRepurchaseCollateralRightToReclaimSecurities	8339297000	USD
CY2012Q4	us-gaap	Securities Sold Under Agreements To Repurchase Fair Value Of Collateral SecuritiesSoldUnderAgreementsToRepurchaseFairValueOfCollateral	10550000000	USD
CY2013Q4	us-gaap	Securities Sold Under Agreements To Repurchase Fair Value Of Collateral SecuritiesSoldUnderAgreementsToRepurchaseFairValueOfCollateral	10116000000	USD
CY2012Q4	us-gaap	Securities Sold Under Agreements To Repurchase Amount Offset Against Collateral SecuritiesSoldUnderAgreementsToRepurchaseAmountOffsetAgainstCollateral	0	USD
CY2013Q4	us-gaap	Securities Sold Under Agreements To Repurchase Amount Offset Against Collateral SecuritiesSoldUnderAgreementsToRepurchaseAmountOffsetAgainstCollateral	0	USD
CY2013Q4	us-gaap	Securities Sold Under Agreements To Repurchase Asset SecuritiesSoldUnderAgreementsToRepurchaseAsset	0	USD
CY2012Q4	us-gaap	Securities Sold Under Agreements To Repurchase Asset SecuritiesSoldUnderAgreementsToRepurchaseAsset	0	USD
CY2012Q4	mfa	Available For Sale Securities Accretable Purchase Discounts AvailableForSaleSecuritiesAccretablePurchaseDiscounts	371684000	USD
CY2012Q4	mfa	Available For Sale Securities Agency AvailableForSaleSecuritiesAgency	7225460000	USD
CY2012Q4	us-gaap	Securities Sold Under Agreements To Repurchase Gross SecuritiesSoldUnderAgreementsToRepurchaseGross	8752472000	USD
CY2013Q4	us-gaap	Securities Sold Under Agreements To Repurchase Gross SecuritiesSoldUnderAgreementsToRepurchaseGross	8339297000	USD
CY2013Q4	us-gaap	Senior Notes SeniorNotes	100000000	USD
CY2012Q4	us-gaap	Senior Notes SeniorNotes	100000000	USD
CY2013	us-gaap	Share Based Compensation ShareBasedCompensation	4158000	USD
CY2011	us-gaap	Share Based Compensation ShareBasedCompensation	4385000	USD
CY2012	us-gaap	Share Based Compensation ShareBasedCompensation	6488000	USD
CY2013Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Authorized ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized	13500000.0	shares
CY2013Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Available For Grant ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant	9700000	shares
CY2013	us-gaap	Shares Paid For Tax Withholding For Share Based Compensation SharesPaidForTaxWithholdingForShareBasedCompensation	132276	shares
CY2012	us-gaap	Shares Paid For Tax Withholding For Share Based Compensation SharesPaidForTaxWithholdingForShareBasedCompensation	291803	shares
CY2005Q3	us-gaap	Stock Repurchase Program Number Of Shares Authorized To Be Repurchased StockRepurchaseProgramNumberOfSharesAuthorizedToBeRepurchased	4000000.0	shares
CY2013Q4	us-gaap	Stock Repurchase Program Number Of Shares Authorized To Be Repurchased StockRepurchaseProgramNumberOfSharesAuthorizedToBeRepurchased	10000000.0	shares
CY2013Q4	us-gaap	Stock Repurchase Program Remaining Number Of Shares Authorized To Be Repurchased StockRepurchaseProgramRemainingNumberOfSharesAuthorizedToBeRepurchased	6616355	shares
CY2012Q4	us-gaap	Stockholders Equity StockholdersEquity	3311006000	USD
CY2013Q4	us-gaap	Stockholders Equity StockholdersEquity	3142251000	USD
CY2011Q4	us-gaap	Stockholders Equity StockholdersEquity	2497760000	USD
CY2012	us-gaap	Unrealized Gain Loss On Derivatives UnrealizedGainLossOnDerivatives	9593000	USD
CY2011	us-gaap	Unrealized Gain Loss On Derivatives UnrealizedGainLossOnDerivatives	-14855000	USD
CY2013	us-gaap	Unrealized Gain Loss On Derivatives UnrealizedGainLossOnDerivatives	1111000	USD
CY2012	us-gaap	Weighted Average Number Of Share Outstanding Basic And Diluted WeightedAverageNumberOfShareOutstandingBasicAndDiluted	356762000	shares
CY2011	us-gaap	Weighted Average Number Of Share Outstanding Basic And Diluted WeightedAverageNumberOfShareOutstandingBasicAndDiluted	341368000	shares
CY2013	us-gaap	Weighted Average Number Of Share Outstanding Basic And Diluted WeightedAverageNumberOfShareOutstandingBasicAndDiluted	362399000	shares
CY2013Q4	mfa	Available For Sale Securities Agency AvailableForSaleSecuritiesAgency	6519221000	USD
CY2012	mfa	Accretion Of Purchase Discounts AccretionOfPurchaseDiscounts	38263000	USD
CY2013	mfa	Accretion Of Purchase Discounts AccretionOfPurchaseDiscounts	73447000	USD
CY2011	mfa	Accretion Of Purchase Discounts AccretionOfPurchaseDiscounts	42419000	USD
CY2011	mfa	Amortization Of Purchase Premiums AmortizationOfPurchasePremiums	38466000	USD
CY2013	mfa	Amortization Of Purchase Premiums AmortizationOfPurchasePremiums	58207000	USD
CY2012	mfa	Amortization Of Purchase Premiums AmortizationOfPurchasePremiums	52298000	USD
CY2013Q4	mfa	Available For Sale Securities Accretable Purchase Discounts AvailableForSaleSecuritiesAccretablePurchaseDiscounts	460126000	USD
CY2013Q4	mfa	Available For Sale Securities Discount Designated As Credit Reserve And Other Than Temporary Impairments AvailableForSaleSecuritiesDiscountDesignatedAsCreditReserveAndOtherThanTemporaryImpairments	1043037000	USD
CY2012Q4	mfa	Available For Sale Securities Discount Designated As Credit Reserve And Other Than Temporary Impairments AvailableForSaleSecuritiesDiscountDesignatedAsCreditReserveAndOtherThanTemporaryImpairments	1380506000	USD
CY2013Q4	mfa	Available For Sale Securities Non Agency AvailableForSaleSecuritiesNonAgency	2569766000	USD
CY2012Q4	mfa	Available For Sale Securities Non Agency AvailableForSaleSecuritiesNonAgency	2762006000	USD
CY2012Q4	mfa	Available For Sale Securities Pledged As Collateral Agency AvailableForSaleSecuritiesPledgedAsCollateralAgency	6747299000	USD
CY2013Q4	mfa	Available For Sale Securities Pledged As Collateral Agency AvailableForSaleSecuritiesPledgedAsCollateralAgency	6142306000	USD
CY2013Q4	mfa	Available For Sale Securities Pledged As Collateral Non Agency AvailableForSaleSecuritiesPledgedAsCollateralNonAgency	1778067000	USD
CY2012Q4	mfa	Available For Sale Securities Pledged As Collateral Non Agency AvailableForSaleSecuritiesPledgedAsCollateralNonAgency	1602953000	USD
CY2012Q4	mfa	Available For Sale Securities Principal Payments Receivable AvailableForSaleSecuritiesPrincipalPaymentsReceivable	4400000	USD
CY2013Q4	mfa	Available For Sale Securities Principal Payments Receivable AvailableForSaleSecuritiesPrincipalPaymentsReceivable	1100000	USD
CY2013Q4	mfa	Available For Sale Securities Purchase Premiums AvailableForSaleSecuritiesPurchasePremiums	227533000	USD
CY2012Q4	mfa	Available For Sale Securities Purchase Premiums AvailableForSaleSecuritiesPurchasePremiums	228256000	USD
CY2011Q4	mfa	Common Stock Special Dividends Per Share Declared CommonStockSpecialDividendsPerShareDeclared	0.02
CY2011	mfa	Comprehensive Income Loss To Common Stockholders And Participating Securities ComprehensiveIncomeLossToCommonStockholdersAndParticipatingSecurities	-5129000	USD
CY2012	mfa	Comprehensive Income Loss To Common Stockholders And Participating Securities ComprehensiveIncomeLossToCommonStockholdersAndParticipatingSecurities	1119359000	USD
CY2013	mfa	Comprehensive Income Loss To Common Stockholders And Participating Securities ComprehensiveIncomeLossToCommonStockholdersAndParticipatingSecurities	260730000	USD
CY2013Q4	mfa	Derivative Collateral Excess DerivativeCollateralExcess	9300000	USD
CY2013	mfa	Employment Agreements Number Of Officers EmploymentAgreementsNumberOfOfficers	5	officer
CY2012Q4	mfa	Excise Tax And Interest Payable ExciseTaxAndInterestPayable	7500000	USD
CY2013Q4	mfa	Excise Tax And Interest Payable ExciseTaxAndInterestPayable	6398000	USD
CY2012	mfa	Excise Taxes And Interest ExciseTaxesAndInterest	7500000	USD
CY2013	mfa	Excise Taxes And Interest ExciseTaxesAndInterest	2250000	USD
CY2011	mfa	Excise Taxes And Interest ExciseTaxesAndInterest	0	USD
CY2012	mfa	Gain On Linked Transactions GainOnLinkedTransactions	12610000	USD
CY2013	mfa	Gain On Linked Transactions GainOnLinkedTransactions	3225000	USD
CY2011	mfa	Gain On Linked Transactions GainOnLinkedTransactions	3015000	USD
CY2013Q3	mfa	Gain On Linked Transactions GainOnLinkedTransactions	544000	USD
CY2013Q4	mfa	Gain On Linked Transactions GainOnLinkedTransactions	1440000	USD
CY2013Q1	mfa	Gain On Linked Transactions GainOnLinkedTransactions	1536000	USD
CY2013Q2	mfa	Gain On Linked Transactions GainOnLinkedTransactions	-295000	USD
CY2012Q4	mfa	Gain On Linked Transactions GainOnLinkedTransactions	1166000	USD
CY2012Q2	mfa	Gain On Linked Transactions GainOnLinkedTransactions	568000	USD
CY2012Q1	mfa	Gain On Linked Transactions GainOnLinkedTransactions	7699000	USD
CY2012Q3	mfa	Gain On Linked Transactions GainOnLinkedTransactions	3177000	USD
CY2013	mfa	Interest Income Agency Securities Mortgage Backed InterestIncomeAgencySecuritiesMortgageBacked	156046000	USD
CY2011	mfa	Interest Income Agency Securities Mortgage Backed InterestIncomeAgencySecuritiesMortgageBacked	241994000	USD
CY2012	mfa	Interest Income Agency Securities Mortgage Backed InterestIncomeAgencySecuritiesMortgageBacked	196058000	USD
CY2011	mfa	Interest Income Non Agency Securities Mortgage Backed InterestIncomeNonAgencySecuritiesMortgageBacked	101054000	USD
CY2013	mfa	Interest Income Non Agency Securities Mortgage Backed InterestIncomeNonAgencySecuritiesMortgageBacked	170485000	USD
CY2012	mfa	Interest Income Non Agency Securities Mortgage Backed InterestIncomeNonAgencySecuritiesMortgageBacked	134901000	USD
CY2011	mfa	Interest Income Non Agency Securities Mortgage Backed Transferred To Consolidated Variable Interest Entity InterestIncomeNonAgencySecuritiesMortgageBackedTransferredToConsolidatedVariableInterestEntity	153563000	USD
CY2012	mfa	Interest Income Non Agency Securities Mortgage Backed Transferred To Consolidated Variable Interest Entity InterestIncomeNonAgencySecuritiesMortgageBackedTransferredToConsolidatedVariableInterestEntity	168071000	USD
CY2013	mfa	Interest Income Non Agency Securities Mortgage Backed Transferred To Consolidated Variable Interest Entity InterestIncomeNonAgencySecuritiesMortgageBackedTransferredToConsolidatedVariableInterestEntity	156285000	USD
CY2012Q4	mfa	Mbs Linked Transactions Net MBSLinkedTransactionsNet	12704000	USD
CY2013Q4	mfa	Mbs Linked Transactions Net MBSLinkedTransactionsNet	28181000	USD
CY2013	mfa	Maturity Of Obligation To Return Securities Obtained As Collateral MaturityOfObligationToReturnSecuritiesObtainedAsCollateral	275402000	USD
CY2012	mfa	Maturity Of Obligation To Return Securities Obtained As Collateral MaturityOfObligationToReturnSecuritiesObtainedAsCollateral	0	USD
CY2011	mfa	Maturity Of Obligation To Return Securities Obtained As Collateral MaturityOfObligationToReturnSecuritiesObtainedAsCollateral	0	USD
CY2013	mfa	Mortgage Backed Securities Period Of Fixed Rate Mortgages Minimum MortgageBackedSecuritiesPeriodOfFixedRateMortgagesMinimum	P15Y
CY2012	mfa	Mortgage Backed Securities Recorded Upon De Linking MortgageBackedSecuritiesRecordedUponDeLinking	175194000	USD
CY2013	mfa	Mortgage Backed Securities Recorded Upon De Linking MortgageBackedSecuritiesRecordedUponDeLinking	0	USD
CY2011	mfa	Mortgage Backed Securities Recorded Upon De Linking MortgageBackedSecuritiesRecordedUponDeLinking	773046000	USD
CY2013	mfa	Net Income Loss Available To Common Stockholders Basic And Diluted Net Of Allocation To Participating Securities NetIncomeLossAvailableToCommonStockholdersBasicAndDilutedNetOfAllocationToParticipatingSecurities	283932000	USD
CY2012	mfa	Net Income Loss Available To Common Stockholders Basic And Diluted Net Of Allocation To Participating Securities NetIncomeLossAvailableToCommonStockholdersBasicAndDilutedNetOfAllocationToParticipatingSecurities	297162000	USD
CY2011	mfa	Net Income Loss Available To Common Stockholders Basic And Diluted Net Of Allocation To Participating Securities NetIncomeLossAvailableToCommonStockholdersBasicAndDilutedNetOfAllocationToParticipatingSecurities	306570000	USD
CY2013Q4	mfa	Non Agency Mortgage Backed Securities Transferred To Consolidated Variable Interest Entity NonAgencyMortgageBackedSecuritiesTransferredToConsolidatedVariableInterestEntity	2282371000	USD
CY2012Q4	mfa	Non Agency Mortgage Backed Securities Transferred To Consolidated Variable Interest Entity NonAgencyMortgageBackedSecuritiesTransferredToConsolidatedVariableInterestEntity	2620159000	USD
CY2013Q2	mfa	Noninterest Income Excluding Amounts Related To Mortgagebacked Securities And Linked Transactions NoninterestIncomeExcludingAmountsRelatedToMortgagebackedSecuritiesAndLinkedTransactions	55000	USD
CY2013Q3	mfa	Noninterest Income Excluding Amounts Related To Mortgagebacked Securities And Linked Transactions NoninterestIncomeExcludingAmountsRelatedToMortgagebackedSecuritiesAndLinkedTransactions	55000	USD
CY2013Q4	mfa	Noninterest Income Excluding Amounts Related To Mortgagebacked Securities And Linked Transactions NoninterestIncomeExcludingAmountsRelatedToMortgagebackedSecuritiesAndLinkedTransactions	54000	USD
CY2013Q1	mfa	Noninterest Income Excluding Amounts Related To Mortgagebacked Securities And Linked Transactions NoninterestIncomeExcludingAmountsRelatedToMortgagebackedSecuritiesAndLinkedTransactions	55000	USD
CY2012Q1	mfa	Noninterest Income Excluding Amounts Related To Mortgagebacked Securities And Linked Transactions NoninterestIncomeExcludingAmountsRelatedToMortgagebackedSecuritiesAndLinkedTransactions	0	USD
CY2012Q4	mfa	Noninterest Income Excluding Amounts Related To Mortgagebacked Securities And Linked Transactions NoninterestIncomeExcludingAmountsRelatedToMortgagebackedSecuritiesAndLinkedTransactions	8000	USD
CY2012Q2	mfa	Noninterest Income Excluding Amounts Related To Mortgagebacked Securities And Linked Transactions NoninterestIncomeExcludingAmountsRelatedToMortgagebackedSecuritiesAndLinkedTransactions	1000	USD
CY2012Q3	mfa	Noninterest Income Excluding Amounts Related To Mortgagebacked Securities And Linked Transactions NoninterestIncomeExcludingAmountsRelatedToMortgagebackedSecuritiesAndLinkedTransactions	1000	USD
CY2013	mfa	Number Of Components Of Linked Transactions NumberOfComponentsOfLinkedTransactions	2	Component
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CY2013	mfa	Number Of Repurchase Agreement Counterparties With Unconditional Right Of Setoff NumberOfRepurchaseAgreementCounterpartiesWithUnconditionalRightOfSetoff	1	counterparty
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CY2012	mfa	Other Comprehensive Income Unrealized Holding Gain Loss On Agency Mortgage Backed Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnAgencyMortgageBackedSecuritiesArisingDuringPeriodNetOfTax	-7820000	USD
CY2011	mfa	Other Comprehensive Income Unrealized Holding Gain Loss On Agency Mortgage Backed Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnAgencyMortgageBackedSecuritiesArisingDuringPeriodNetOfTax	61149000	USD
CY2013	mfa	Other Comprehensive Income Unrealized Holding Gain Loss On Agency Mortgage Backed Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnAgencyMortgageBackedSecuritiesArisingDuringPeriodNetOfTax	-186568000	USD
CY2011	mfa	Other Comprehensive Income Unrealized Holding Gain Loss On Non Agency Mortgage Backed Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnNonAgencyMortgageBackedSecuritiesArisingDuringPeriodNetOfTax	-381410000	USD
CY2013	mfa	Other Comprehensive Income Unrealized Holding Gain Loss On Non Agency Mortgage Backed Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnNonAgencyMortgageBackedSecuritiesArisingDuringPeriodNetOfTax	134505000	USD
CY2012	mfa	Other Comprehensive Income Unrealized Holding Gain Loss On Non Agency Mortgage Backed Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnNonAgencyMortgageBackedSecuritiesArisingDuringPeriodNetOfTax	785830000	USD
CY2011	mfa	Payments For Resecuritization Related Costs PaymentsForResecuritizationRelatedCosts	6981000	USD
CY2013	mfa	Payments For Resecuritization Related Costs PaymentsForResecuritizationRelatedCosts	0	USD
CY2012	mfa	Payments For Resecuritization Related Costs PaymentsForResecuritizationRelatedCosts	1814000	USD
CY2011	mfa	Payments Made For Margin Calls On Repurchase Agreements And Derivatives PaymentsMadeForMarginCallsOnRepurchaseAgreementsAndDerivatives	19361000	USD
CY2013	mfa	Payments Made For Margin Calls On Repurchase Agreements And Derivatives PaymentsMadeForMarginCallsOnRepurchaseAgreementsAndDerivatives	69902000	USD
CY2012	mfa	Payments Made For Margin Calls On Repurchase Agreements And Derivatives PaymentsMadeForMarginCallsOnRepurchaseAgreementsAndDerivatives	2390000	USD
CY2011	mfa	Payments On Securitized Debt PaymentsOnSecuritizedDebt	308668000	USD
CY2013	mfa	Payments On Securitized Debt PaymentsOnSecuritizedDebt	409606000	USD
CY2012	mfa	Payments On Securitized Debt PaymentsOnSecuritizedDebt	415395000	USD
CY2013	mfa	Percentage Of Annual Reit Taxable Income Distributed To Stockholders PercentageOfAnnualREITTaxableIncomeDistributedToStockholders	1
CY2013Q4	mfa	Pledged Financial Instruments Not Separately Reported Securities Pledged Aggregate Fair Value And Accrued Interest PledgedFinancialInstrumentsNotSeparatelyReportedSecuritiesPledgedAggregateFairValueAndAccruedInterest	10219844000	USD
CY2013	mfa	Preferred Stock Voting Rights Percentage Required For Making Material And Adverse Changes To Terms Minimum PreferredStockVotingRightsPercentageRequiredForMakingMaterialAndAdverseChangesToTermsMinimum	0.6667
CY2013	mfa	Principal Payments On Linked Transactions PrincipalPaymentsOnLinkedTransactions	419802000	USD
CY2011	mfa	Principal Payments On Linked Transactions PrincipalPaymentsOnLinkedTransactions	2327609000	USD
CY2012	mfa	Principal Payments On Linked Transactions PrincipalPaymentsOnLinkedTransactions	585393000	USD
CY2011	mfa	Principal Payments On Securities Sold Under Agreements To Repurchase PrincipalPaymentsOnSecuritiesSoldUnderAgreementsToRepurchase	54050542000	USD
CY2012	mfa	Principal Payments On Securities Sold Under Agreements To Repurchase PrincipalPaymentsOnSecuritiesSoldUnderAgreementsToRepurchase	63237681000	USD
CY2013	mfa	Principal Payments On Securities Sold Under Agreements To Repurchase PrincipalPaymentsOnSecuritiesSoldUnderAgreementsToRepurchase	69851602000	USD
CY2013	mfa	Proceeds From Issuance Of Securitized Debt ProceedsFromIssuanceOfSecuritizedDebt	129314000	USD
CY2011	mfa	Proceeds From Issuance Of Securitized Debt ProceedsFromIssuanceOfSecuritizedDebt	963255000	USD
CY2012	mfa	Proceeds From Issuance Of Securitized Debt ProceedsFromIssuanceOfSecuritizedDebt	186691000	USD
CY2012	mfa	Proceeds From Linked Transactions ProceedsFromLinkedTransactions	462889000	USD
CY2013	mfa	Proceeds From Linked Transactions ProceedsFromLinkedTransactions	405436000	USD
CY2011	mfa	Proceeds From Linked Transactions ProceedsFromLinkedTransactions	1710520000	USD
CY2012	mfa	Proceeds From Margin Calls On Repurchase Agreements And Derivatives ProceedsFromMarginCallsOnRepurchaseAgreementsAndDerivatives	12890000	USD
CY2011	mfa	Proceeds From Margin Calls On Repurchase Agreements And Derivatives ProceedsFromMarginCallsOnRepurchaseAgreementsAndDerivatives	42914000	USD
CY2013	mfa	Proceeds From Margin Calls On Repurchase Agreements And Derivatives ProceedsFromMarginCallsOnRepurchaseAgreementsAndDerivatives	22809000	USD
CY2013	mfa	Proceeds From Securities Sold Under Agreements To Repurchase ProceedsFromSecuritiesSoldUnderAgreementsToRepurchase	69438427000	USD
CY2012	mfa	Proceeds From Securities Sold Under Agreements To Repurchase ProceedsFromSecuritiesSoldUnderAgreementsToRepurchase	64176994000	USD
CY2011	mfa	Proceeds From Securities Sold Under Agreements To Repurchase ProceedsFromSecuritiesSoldUnderAgreementsToRepurchase	55824734000	USD
CY2011	mfa	Real Estate Operating Expense And Mortgage Interest RealEstateOperatingExpenseAndMortgageInterest	970000	USD
CY2012	mfa	Real Estate Operating Expense And Mortgage Interest RealEstateOperatingExpenseAndMortgageInterest	0	USD
CY2013	mfa	Real Estate Operating Expense And Mortgage Interest RealEstateOperatingExpenseAndMortgageInterest	0	USD
CY2011	mfa	Repayments Of Securities Received As Collateral RepaymentsOfSecuritiesReceivedAsCollateral	0	USD
CY2012	mfa	Repayments Of Securities Received As Collateral RepaymentsOfSecuritiesReceivedAsCollateral	0	USD
CY2013	mfa	Repayments Of Securities Received As Collateral RepaymentsOfSecuritiesReceivedAsCollateral	246850000	USD
CY2013Q4	mfa	Repurchase Agreement Counterparty Risk As Percentage Of Stockholders Equity RepurchaseAgreementCounterpartyRiskAsPercentageOfStockholdersEquity	0.05
CY2011	mfa	Repurchase Agreement Recorded Upon De Linking RepurchaseAgreementRecordedUponDeLinking	46698000	USD
CY2013	mfa	Repurchase Agreement Recorded Upon De Linking RepurchaseAgreementRecordedUponDeLinking	0	USD
CY2012	mfa	Repurchase Agreement Recorded Upon De Linking RepurchaseAgreementRecordedUponDeLinking	0	USD
CY2013	mfa	Repurchase Agreements Financing Period High End Of Range RepurchaseAgreementsFinancingPeriodHighEndOfRange	P6M
CY2013	mfa	Repurchase Agreements Financing Period Low End Of Range RepurchaseAgreementsFinancingPeriodLowEndOfRange	P1M
CY2013Q4	mfa	Repurchase Agreements Number Of Counterparties RepurchaseAgreementsNumberOfCounterparties	26	counterparty
CY2012Q4	mfa	Repurchase Agreements Number Of Counterparties RepurchaseAgreementsNumberOfCounterparties	26	counterparty
CY2012	mfa	Stock Repurchased And Retired During Period Average Cost Per Share StockRepurchasedAndRetiredDuringPeriodAverageCostPerShare	7.83
CY2013	mfa	Stock Repurchased And Retired During Period Average Cost Per Share StockRepurchasedAndRetiredDuringPeriodAverageCostPerShare	7.20
CY2013	dei	Amendment Flag AmendmentFlag	false
CY2011	mfa	Securities Obtained As Collateral SecuritiesObtainedAsCollateral	306401000	USD
CY2012	mfa	Securities Obtained As Collateral SecuritiesObtainedAsCollateral	202432000	USD
CY2013	mfa	Securities Obtained As Collateral SecuritiesObtainedAsCollateral	401135000	USD
CY2013Q4	mfa	Securitized Debt SecuritizedDebt	366205000	USD
CY2012Q4	mfa	Securitized Debt SecuritizedDebt	646816000	USD
CY2012	mfa	Settlementof Short Positions SettlementofShortPositions	0	USD
CY2011	mfa	Settlementof Short Positions SettlementofShortPositions	0	USD
CY2013	mfa	Settlementof Short Positions SettlementofShortPositions	7517000	USD
CY2013	mfa	Share Based Compensation Arrangement By Share Based Payment Award Forfeiture Rate2009 And Prior ShareBasedCompensationArrangementByShareBasedPaymentAwardForfeitureRate2009AndPrior	0
CY2013	mfa	Stock Repurchase Program Stock Repurchased And Retired During Period Shares StockRepurchaseProgramStockRepurchasedAndRetiredDuringPeriodShares	2143354	shares
CY2012	mfa	Stock Repurchase Program Stock Repurchased And Retired During Period Shares StockRepurchaseProgramStockRepurchasedAndRetiredDuringPeriodShares	1240291	shares
CY2013	mfa	Stock Repurchase Program Stock Repurchased And Retired During Period Value StockRepurchaseProgramStockRepurchasedAndRetiredDuringPeriodValue	15400000	USD
CY2012	mfa	Stock Repurchase Program Stock Repurchased And Retired During Period Value StockRepurchaseProgramStockRepurchasedAndRetiredDuringPeriodValue	9700000	USD
CY2013	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
CY2013	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	FY
CY2013	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2013
CY2013	dei	Document Period End Date DocumentPeriodEndDate	2013-12-31
CY2013	dei	Document Type DocumentType	10-K
CY2013	dei	Entity Central Index Key EntityCentralIndexKey	0001055160
CY2014Q1	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	366638568	shares
CY2013	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
CY2013	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
CY2013Q2	dei	Entity Public Float EntityPublicFloat	3046000000	USD
CY2013	dei	Entity Registrant Name EntityRegistrantName	MFA FINANCIAL, INC.
CY2013	dei	Entity Voluntary Filers EntityVoluntaryFilers	No
CY2013	dei	Entity Well Known Seasoned Issuer EntityWellKnownSeasonedIssuer	Yes

Files In Submission

Name	View Source	Status
0001055160-14-000036-index-headers.html	Edgar Link	pending
0001055160-14-000036-index.html	Edgar Link	pending
0001055160-14-000036.txt	Edgar Link	pending
0001055160-14-000036-xbrl.zip	Edgar Link	pending
exhibit121computationofrat.htm	Edgar Link	pending
exhibit21subsidiariesofthe.htm	Edgar Link	pending
exhibit231consentofkpmgllp.htm	Edgar Link	pending
exhibit311chiefcertificati.htm	Edgar Link	pending
exhibit312chiefcertificati.htm	Edgar Link	pending
exhibit321certification123.htm	Edgar Link	pending
exhibit322certification123.htm	Edgar Link	pending
FilingSummary.xml	Edgar Link	unprocessable
Financial_Report.xls	Edgar Link	pending
Financial_Report.xlsx	Edgar Link	pending
mfa-123113x10k.htm	Edgar Link	pending
mfa-20131231.xml	Edgar Link	completed
mfa-20131231.xsd	Edgar Link	pending
mfa-20131231_cal.xml	Edgar Link	unprocessable
mfa-20131231_def.xml	Edgar Link	unprocessable
mfa-20131231_lab.xml	Edgar Link	unprocessable
mfa-20131231_pre.xml	Edgar Link	unprocessable
R1.htm	Edgar Link	pending
R10.htm	Edgar Link	pending
R11.htm	Edgar Link	pending
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report.css	Edgar Link	pending
Show.js	Edgar Link	pending

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$MFA
MFA FINANCIAL, INC. Stock $mfa

2014 Q1 Form 10-K Financial Statement

#000105516014000036 Filed on February 13, 2014

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$MFA MFA FINANCIAL, INC. Stock $mfa

2014 Q1 Form 10-K Financial Statement

#000105516014000036 Filed on February 13, 2014

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$MFA
MFA FINANCIAL, INC. Stock $mfa