Dynex Capital (DX) 10-Q 11 Aug 14 2014 Q2 Quarterly report Financial data

Document_and_Entity_Informatio

Document and Entity Information	6 Months Ended
	Jun. 30, 2014	Aug. 05, 2014
Entity Information [Line Items]	'	'
Entity Registrant Name	'DYNEX CAPITAL INC	'
Entity Central Index Key	'0000826675	'
Current Fiscal Year End Date	'--12-31	'
Entity Filer Category	'Accelerated Filer	'
Document Type	'10-Q	'
Document Period End Date	30-Jun-14	'
Document Fiscal Year Focus	'2014	'
Document Fiscal Period Focus	'Q2	'
Amendment Flag	'false	'
Entity Common Stock, Shares Outstanding	'	54,731,849
Entity Well-known Seasoned Issuer	'No	'
Entity Voluntary Filers	'No	'
Entity Current Reporting Status	'Yes	'

Consolidated_Balance_Sheets

Consolidated Balance Sheets (USD $)	Jun. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
ASSETS	'	'
Mortgage-backed securities	$3,949,965	$4,018,161
Mortgage loans held for investment	52,564	55,423
Cash and cash equivalents	36,837	69,330
Restricted cash	30,747	13,385
Derivative assets	5,237	18,488
Principal receivable on investments	10,769	12,999
Accrued interest receivable	22,477	21,703
Other assets, net	7,322	7,648
Total assets	4,115,918	4,217,137
Liabilities:	'	'
Repurchase agreements	3,447,050	3,580,754
Payable for unsettled mortgage-backed securities	0	10,358
Non recourse collateralized financing	12,073	12,914
Derivative Liabilities	23,974	6,681
Accrued interest payable	1,770	2,548
Accrued dividends payable	15,620	16,601
Other liabilities	2,517	1,405
Total liabilities	3,503,004	3,631,261
Shareholders’ equity:	'	'
Common stock, par value $.01 per share, 200,000,000 shares authorized; 54,697,307 and 54,310,484 shares issued and outstanding, respectively	547	543
Additional paid-in capital	762,502	761,550
Accumulated other comprehensive income	30,944	-33,816
Accumulated deficit	-290,737	-252,059
Total shareholders' equity	612,914	585,876
Total liabilities and shareholders’ equity	4,115,918	4,217,137
Series A Preferred Stock [Member]	'	'
Shareholders’ equity:	'	'
Preferred Stock, par value $.01 per share	55,407	55,407
Series B Preferred Stock [Member]	'	'
Shareholders’ equity:	'	'
Preferred Stock, par value $.01 per share	$54,251	$54,251

Consolidated_Balance_Sheets_Pa

Consolidated Balance Sheets (Parenthetical) (USD $)	Jun. 30, 2014	Dec. 31, 2013
In Thousands, except Share data, unless otherwise specified
ASSETS	'	'
Pledged MBS	$3,768,466	$3,873,584
Common stock, par value	$0.01	$0.01
Common Stock, Shares Authorized	200,000,000	200,000,000
Common Stock, Shares, Issued	54,729,087	54,310,484
Common stock, shares outstanding	54,729,087	54,310,484
Series A Preferred Stock [Member]	'	'
ASSETS	'	'
Preferred Stock, Par Value Per Share	$0.01	$0.01
Preferred Stock, Shares Authorized	8,000,000	8,000,000
Preferred Stock, Shares Issued	2,300,000	2,300,000
Preferred Stock, Shares Outstanding	2,300,000	2,300,000
Preferred Stock, aggregate liquidation preference	57,500	57,500
Series B Preferred Stock [Member]	'	'
ASSETS	'	'
Preferred Stock, Par Value Per Share	$0.01	$0.01
Preferred Stock, Shares Authorized	7,000,000	7,000,000
Preferred Stock, Shares Issued	2,250,000	2,250,000
Preferred Stock, Shares Outstanding	2,250,000	2,250,000
Preferred Stock, aggregate liquidation preference	$56,250	$56,250

Consolidated_Statements_of_Com

Consolidated Statements of Comprehensive Income (USD $)	3 Months Ended		6 Months Ended
In Thousands, except Share data, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Interest income:	'	'	'	'
Mortgage-backed securities	$26,995	$32,968	$53,897	$65,007
Mortgage loans held for investment	723	922	1,462	1,865
Total interest income	27,718	33,890	55,359	66,872
Interest expense:	'	'	'	'
Repurchase agreements	6,548	11,165	14,159	21,383
Non recourse collateralized financing	24	281	46	519
Total interest expense	6,572	11,446	14,205	21,902
Net interest income	21,146	22,444	41,154	44,970
Provision for loan losses	0	0	0	-261
Gain (loss) on derivative instruments, net	-23,074	11,353	-36,496	11,336
Gain on sale of investments, net	-477	2,031	-3,784	3,422
Fair value adjustments, net	88	-600	119	-740
Other income, net	137	101	212	13
General and administrative expenses:	'	'	'	'
Compensation and benefits	-2,329	-2,308	-4,881	-4,666
Other general and administrative	-1,490	-1,487	-3,057	-2,938
Net (loss) income	-5,999	31,534	-6,733	51,136
Preferred Stock Dividends	-2,294	-2,092	-4,588	-3,313
Net (loss) income to common shareholders	-8,293	29,442	-11,321	47,823
Change in fair value of available-for-sale securities	33,114	-115,263	57,080	-109,366
Reclassification adjustment for (loss) gain on sale of investments, net	477	-2,031	3,784	-3,422
Change in fair value of cash flow hedges	0	15,944	0	16,381
Reclassification adjustment for cash flow hedges (including de-designated hedges)	1,608	4,693	3,896	8,796
Other comprehensive income	35,199	-96,657	64,760	-87,611
Comprehensive income to common shareholders	$26,906	($67,215)	$53,439	($39,788)
Weighted average common shares:	'	'	'	'
Basic and diluted	54,711,108	54,973,561	54,668,591	54,638,651
Net income per common share:	'	'	'	'
Net (loss) income per common share - basic and diluted	($0.15)	$0.54	($0.21)	$0.88
Dividends declared per common share	$0.25	$0.29	$0.50	$0.58

Consolidated_Statements_of_Sha

Consolidated Statements of Shareholders' Equity Statement (USD $)

6 Months Ended

6 Months Ended

6 Months Ended

3 Months Ended

6 Months Ended

6 Months Ended

6 Months Ended

In Thousands, unless otherwise specified

Jun. 30, 2014

Jun. 30, 2013

Dec. 31, 2013

Dec. 31, 2012

Jun. 30, 2014

Jun. 30, 2013

Dec. 31, 2013

Dec. 31, 2012

Jun. 30, 2014

Jun. 30, 2013

Dec. 31, 2013

Dec. 31, 2012

Jun. 30, 2014

Jun. 30, 2013

Dec. 31, 2013

Dec. 31, 2012

Jun. 30, 2014

Jun. 30, 2013

Dec. 31, 2013

Dec. 31, 2012

Jun. 30, 2014

Jun. 30, 2013

Dec. 31, 2013

Dec. 31, 2012

Preferred Stock Including Additional Paid in Capital [Member]

Preferred Stock Including Additional Paid in Capital [Member]

Preferred Stock Including Additional Paid in Capital [Member]

Preferred Stock Including Additional Paid in Capital [Member]

Common Stock [Member]

Common Stock [Member]

Common Stock [Member]

Common Stock [Member]

Additional Paid-in Capital [Member]

Additional Paid-in Capital [Member]

Additional Paid-in Capital [Member]

Additional Paid-in Capital [Member]

Accumulated Other Comprehensive (Loss) Income [Member]

Accumulated Other Comprehensive (Loss) Income [Member]

Accumulated Other Comprehensive (Loss) Income [Member]

Accumulated Other Comprehensive (Loss) Income [Member]

Retained Earnings [Member]

Retained Earnings [Member]

Retained Earnings [Member]

Retained Earnings [Member]

Shareholders' Equity [Member]

Shareholders' Equity [Member]

Shareholders' Equity [Member]

Shareholders' Equity [Member]

Total shareholders' equity

$109,658

$109,658

$109,658

$55,407

$547

$552

$543

$543

$762,502

$767,172

$761,550

$759,214

$30,944

($35,100)

($33,816)

$52,511

($290,737)

($235,045)

($252,059)

($250,965)

$612,914

$607,237

$585,876

$616,710

Stock issuance

0

54,251

'

'

1

7

'

'

165

7,466

'

'

'

'

'

'

'

'

'

'

166

61,724

'

'

Granting and vesting of restricted stock

'

'

'

'

4

3

'

'

1,350

1,096

'

'

'

'

'

'

'

'

'

'

1,354

1,099

'

'

Amortization of stock issuance costs

'

'

'

'

'

'

'

'

-59

-59

'

'

'

'

'

'

'

'

'

'

-59

-59

'

'

Adjustments for tax withholding on share-based compensation

'

'

'

'

-1

-1

'

'

-504

-545

'

'

'

'

'

'

'

'

'

'

-505

-546

'

'

Net (loss) income

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

-6,733

51,136

'

'

-6,733

51,136

'

'

Dividends on preferred stock

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

-4,588

-3,313

'

'

-4,588

-3,313

'

'

Dividends on common stock

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

-27,357

-31,903

'

'

-27,357

-31,903

'

'

Other comprehensive income

'

'

'

'

'

'

'

'

'

'

'

'

$64,760

($87,611)

'

'

'

'

'

'

$64,760

($87,611)

'

'

Consolidated_Statements_of_Cas

Consolidated Statements of Cash Flows (USD $)	6 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013
Operating activities:	'	'
Net (loss) income	($6,733)	$51,136
Adjustments to reconcile net income to cash provided by operating activities:	'	'
Decrease (increase) in accrued interest receivable	774	1,231
(Decrease) increase in accrued interest payable	-778	-1,234
Provision for loan losses	0	261
Loss on derivative instruments, net	-36,496	11,336
Loss (gain) on sale of investments, net	-3,784	3,422
Fair value adjustments, net	119	-740
Amortization and depreciation	71,705	66,751
Stock-based compensation expense	1,355	1,106
Other operating activities	-598	782
Net cash and cash equivalents provided by operating activities	105,534	101,989
Investing activities:	'	'
Purchase of investments	298,699	1,310,794
Principal payments received on investments	253,263	481,072
Proceeds from sales of investments	95,932	164,916
Principal payments received on mortgage loans held for investment, net	2,889	8,495
Net payments on derivatives not designated as hedges	5,951	436
Other investing activities	5	-142
Net cash and cash equivalents used in investing activities	47,429	-656,605
Financing activities:	'	'
(Repayments of) borrowings under repurchase agreements, net	-133,912	507,056
Principal payments on non-recourse collateralized financing	-858	-5,940
Increase in restricted cash	17,362	0
Proceeds from issuance of preferred stock	0	54,251
Proceeds from issuance of common stock	107	7,412
Payments Related to tax withholding for share-based compensation	505	545
Dividends paid	32,926	34,084
Net cash and cash equivalents provided by (used in) financing activities	-185,456	528,150
Net increase (decrease) in cash and cash equivalents	-32,493	-26,466
Cash and cash equivalents at beginning of period	69,330	55,809
Cash and cash equivalents at end of period	36,837	29,343
Supplemental Disclosure of Cash Activities:	'	'
Cash paid for interest	$10,861	$22,065

Summary_of_Significant_Account

Summary of Significant Accounting Policies	6 Months Ended
	Jun. 30, 2014
Accounting Policies [Abstract]	'
Organization and Summary of Significant Accounting Policies	'
	SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES
	Organization
	Dynex Capital, Inc., ("Company”) was incorporated in the Commonwealth of Virginia on December 18, 1987 and commenced operations in February 1988. The Company primarily earns income from investing on a leveraged basis in mortgage-backed securities ("MBS") that are issued or guaranteed by the U.S. Government or U.S. Government sponsored agencies ("Agency MBS") and MBS issued by others ("non-Agency MBS").
	Basis of Presentation
	The accompanying consolidated financial statements of Dynex Capital, Inc. and its qualified real estate investment trust (“REIT”) subsidiaries and its taxable REIT subsidiary (together, “Dynex” or the “Company”) have been prepared in accordance with the instructions to the Quarterly Report on Form 10-Q and Article 10, Rule 10-01 of Regulation S-X promulgated by the Securities and Exchange Commission (the “SEC”). Accordingly, they do not include all of the information and notes required by accounting principles generally accepted in the United States of America (“GAAP”) for complete financial statements. The financial information included herein is unaudited; however, in the opinion of management, all significant adjustments, consisting of normal recurring accruals considered necessary for a fair presentation of the consolidated financial statements, have been included. Operating results for the three and six months ended June 30, 2014 are not necessarily indicative of the results that may be expected for any other interim periods or for the entire year ending December 31, 2014. The unaudited consolidated financial statements included herein should be read in conjunction with the audited financial statements and notes thereto included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2013 filed with the SEC.
	Reclassifications
	Certain items in the prior periods' consolidated financial statements have been reclassified to conform to the current year’s presentation. The Company's consolidated balance sheet as of December 31, 2013 now presents its "securitized mortgage loans, net" and "other investments, net" together as "mortgage loans held for investment, net". In addition, the Company has combined the presentation of its consolidated statements of income and its consolidated statements of other comprehensive income together as one financial statement which is now titled "consolidated statements of comprehensive income". The Company's "interest income - securitized mortgage loans" and "interest income-other investments" on its consolidated statement of income for the three and six months ended June 30, 2013 is now presented together as "interest income-mortgage loans held for investment" on its consolidated statement of comprehensive income for the three and six months ended June 30, 2013. In addition, changes in fair value and other activity related to the Company's derivative instruments have been reclassified from "fair value adjustments, net" to "gain (loss) on derivative instruments, net", and the respective amounts on the Company's consolidated statement of cash flows for the six months ended June 30, 2013 have been changed to reflect this reclassification. These presentation changes have no effect on reported total assets, total liabilities, results of operations, or cash flow activities.
	Consolidation
	The consolidated financial statements include the accounts of the Company, its qualified REIT subsidiaries and its taxable REIT subsidiary. The consolidated financial statements represent the Company’s accounts after the elimination of intercompany balances and transactions. The Company consolidates entities in which it owns more than 50% of the voting equity and control does not rest with others and variable interest entities in which it is determined to be the primary beneficiary in accordance with Financial Accounting Standards Board ("FASB") Accounting Standards Codification ("ASC") Topic 810-10. The Company follows the equity method of accounting for investments in which it owns greater than a 20% and less than 50% interest in partnerships and corporate joint ventures or when it is able to influence the financial and operating policies of the investee but owns less than 50% of the voting equity. The Company did not have any investments in which it owned less than a 50% interest in the voting equity as of June 30, 2014 or December 31, 2013.
	In accordance with ASC Topic 810-10, the Company also consolidates certain trusts through which it has securitized mortgage loans held for investment. Additional information regarding the accounting policy for its securitized mortgage loans is provided below under "Mortgage Loans Held for Investment, Net".
	Use of Estimates
	The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and the disclosure of contingent assets and liabilities at the date of the financial statements as well as the reported amounts of revenue and expenses during the reported period.  Actual results could differ from those estimates.  The most significant estimates used by management include, but are not limited to, fair value measurements of its investments, other-than-temporary impairments, contingencies, and amortization of premiums and discounts. These items are discussed further below within this note to the consolidated financial statements.
	Income Taxes
	The Company has elected to be taxed as a REIT under the Internal Revenue Code of 1986 and the corresponding provisions of state law. To qualify as a REIT, the Company must meet certain tests including investing in primarily real estate-related assets and the required distribution of at least 90% of its annual REIT taxable income to stockholders after consideration of its net operating loss carryforward and not including taxable income retained in its taxable subsidiaries. As a REIT, the Company generally will not be subject to federal income tax on the amount of its income or gain that is distributed as dividends to shareholders.
	The Company assesses its tax positions for all open tax years and determines whether the Company has any material unrecognized liabilities in accordance with ASC Topic 740. The Company records these liabilities, if any, to the extent they are deemed more likely than not to have been incurred.
	Mortgage-Backed Securities
	In accordance with ASC Topic 320, the Company has designated its investments in MBS as available-for-sale ("AFS"). All of the Company’s MBS are recorded at their fair value on its consolidated balance sheet. Changes in fair value for the Company's AFS securities are reported in other comprehensive income ("OCI") until the security is collected, disposed of, or determined to be other than temporarily impaired. Although the Company generally intends to hold its AFS securities until maturity, it may, from time to time, sell any of these securities as part of the overall management of its business. Upon the sale of an AFS security, any unrealized gain or loss is reclassified out of accumulated other comprehensive income ("AOCI") into net income as a realized "gain (loss) on sale of investments, net" using the specific identification method.
	The Company’s MBS pledged as collateral against repurchase agreements and derivative instruments are included in MBS on the consolidated balance sheets with the fair value of the MBS pledged disclosed parenthetically.
	Interest Income, Premium Amortization, and Discount Accretion. Interest income on MBS is accrued based on the outstanding principal balance (or notional balance in the case of interest-only, or "IO", securities) and their contractual terms.  Premiums and discounts on Agency MBS as well as any non-Agency MBS rated 'AA' and higher at the time of purchase are amortized into interest income over the expected life of such securities using the effective yield method and adjustments to premium amortization are made for actual cash payments as well as changes in projected future cash payments in accordance with ASC Topic 310-20. The Company's projections of future cash payments are based on input and analysis received from external sources and internal models, and includes assumptions about the amount and timing of credit losses, loan prepayment rates, fluctuations in interest rates, and other factors. On at least a quarterly basis, the Company reviews and makes any necessary adjustments to its cash flow projections and updates the yield recognized on these assets.
	The Company has non-Agency MBS that were rated less than 'AA' at the time of purchase by at least one national rating agency at discounts to their par value, and management does not believe these discounts to be substantial. The Company accretes the discount into income over the security's expected life, which reflects management's estimate of the security's projected cash flows in accordance with ASC Topic 325-40. Future changes in the timing of projected cash flows or differences arising between projected cash flows and actual cash flows received may result in a prospective change in the effective yield on those securities.
	The accrual of interest on MBS is discontinued when, in the opinion of management, it is probable that all amounts contractually due will not be collected, and in certain instances, as a result of an other-than-temporary impairment analysis (see discussion below). All interest accrued but not collected for investments that are placed on a non-accrual status or are charged-off is reversed against interest income. Interest on these investments is accounted for on the cash-basis or cost-recovery method until the affected investment or investments qualify for return to accrual status. Investments are returned to accrual status when all the principal and interest amounts contractually due are brought current and future payments are reasonably assured.
	Determination of MBS Fair Value. In accordance with ASC Topic 820, the Company determines the fair value for the majority of its MBS based upon prices obtained from third-party pricing services and broker quotes. The remainder of the Company's MBS are valued by discounting the estimated future cash flows derived from cash flow models that utilize information such as the security's coupon rate, estimated prepayment speeds, expected weighted average life, collateral composition, estimated future interest rates, expected losses, and credit enhancements as well as certain other relevant information. The Company's application of ASC Topic 820 guidance is discussed further in Note 7.
	Other-than-Temporary Impairment. The Company evaluates all MBS in its investment portfolio for other-than-temporary impairments ("OTTI") by comparing the amortized cost of each security in an unrealized loss position against the present value of expected future cash flows of the security. If there has been a significant adverse change in the cash flow expectations for a security resulting in its amortized cost becoming greater than the present value of its expected future cash flows, an other-than-temporary credit impairment has occurred. If the Company does not intend to sell and is not more likely than not required to sell the security, the credit loss is recognized in earnings and the balance of the unrealized loss is recognized in other comprehensive income (loss). If the Company intends to sell the security or will be more likely than not required to sell the security, the full unrealized loss is recognized in earnings.
	In periods after the recognition of an OTTI loss for MBS, the Company accounts for the other-than-temporarily impaired MBS as if the debt security had been purchased on the measurement date of the OTTI at an amortized cost basis equal to the previous amortized cost basis less the OTTI recognized in earnings. For MBS for which OTTIs were recognized in earnings, the difference between the new amortized cost basis and the cash flows expected to be collected shall be accreted into interest income using the effective interest method. The Company continues to estimate the present value of cash flows expected to be collected over the life of the MBS. If upon subsequent evaluation, there is an increase in the cash flows expected to be collected or if actual cash flows are greater than cash flows previously expected, such changes will be accounted for as a prospective adjustment to the accretable yield in accordance with ASC Topic 310-30 even if the MBS would not otherwise be within the scope of that guidance. Please see Note 3 for additional information related to the Company's evaluation for OTTI.
	Mortgage Loans Held for Investment, Net
	Mortgage loans held for investment, net consist of mortgage loans originated or purchased by the Company from 1992-1998, and these mortgage loans are reported at amortized cost in accordance with ASC Topic 310-10. Substantially all of these loans have been pledged as collateral to support the repayment of securitization financing bonds issued by the Company. The associated securitization financing bonds are treated as debt of the Company and are presented as "non-recourse collateralized financing" on the consolidated balance sheet. Securitized mortgage loans can only be sold subject to the lien of the respective securitization financing indenture. An allowance has been established for currently existing and probable losses on all of the Company's mortgage loans held for investment.
	Repurchase Agreements
	Repurchase agreements are accounted for as secured borrowings under which the Company pledges its securities as collateral to secure a loan, which is equal in value to a specified percentage of the estimated fair value of the pledged collateral. The Company retains beneficial ownership of the pledged collateral. At the maturity of a repurchase agreement, the Company is required to repay the loan and concurrently receives back its pledged collateral from the lender or, with the consent of the lender, the Company may renew the agreement at the then prevailing financing rate. A repurchase agreement lender may require the Company to pledge additional collateral in the event of a decline in the fair value of the collateral pledged. Repurchase agreement financing is recourse to the Company and the assets pledged. Most of the Company’s repurchase agreements are based on the September 1996 version of the Bond Market Association Master Repurchase Agreement, which generally provides that the lender, as buyer, is responsible for obtaining collateral valuations from a generally recognized source agreed to by both the Company and the lender, or, in an instance when such source is not available, the value determination is made by the lender.
	Derivative Instruments
	The Company accounts for its derivative instruments, which currently include interest rate swaps and Eurodollar futures, in accordance with ASC Topic 815, which requires an entity to recognize all derivatives as either assets or liabilities in the balance sheet and to measure those instruments at fair value. Gains and losses associated with derivative instruments are recorded in "(loss) gain on derivative instruments, net" in our consolidated statement of comprehensive income.
	Effective June 30, 2013, the Company discontinued cash flow hedge accounting for derivative instruments which had previously been accounted for as cash flow hedges under ASC Topic 815. Activity up to and including June 30, 2013 for those agreements previously designated as cash flow hedges was recorded in accordance with cash flow hedge accounting as prescribed by ASC Topic 815, which states that the effective portion of the hedge relationship on an instrument designated as a cash flow hedge is reported in the current period's other comprehensive income while the ineffective portion is immediately reported as a component of the current period’s net income. The balance remaining in AOCI related to the de-designated cash flow hedges is amortized into the Company's net income as a portion of "interest expense" over the remaining life of the interest rate swap agreements. Subsequent to June 30, 2013, changes in the fair value of the Company's derivative instruments, plus periodic settlements, are recorded in the Company's net income as a portion of "(loss) gain on derivative instruments, net".
	The use of derivatives creates exposure to credit risk relating to potential losses that could be recognized in the event that the counterparties to these instruments fail to perform their obligations under the contracts. We attempt to minimize this risk by limiting our counterparties to major financial institutions with acceptable credit ratings, monitoring positions with individual counterparties and adjusting posted collateral as required.
	Although MBS have characteristics that meet the definition of a derivative instrument, ASC 815 specifically excludes these instruments from its scope because they are accounted for as debt securities under ASC 320.
	Share-Based Compensation
	Pursuant to the Company’s 2009 Stock and Incentive Plan ("SIP"), the Company may grant share-based compensation to eligible employees, directors or consultants or advisers to the Company, including stock awards, stock options, stock appreciation rights, dividend equivalent rights, performance shares, and restricted stock units. The Company's restricted stock currently issued and outstanding under this plan may be settled only in shares of its common stock, and therefore are treated as equity awards with their fair value measured at the grant date and recognized as compensation cost over a requisite service period with a corresponding credit to shareholders' equity as required by ASC Topic 718. The requisite service period is the period during which an employee is required to provide service in exchange for an award, which is equivalent to the vesting period specified in the terms of the share-based based award. None of the Company's restricted stock awards have performance based conditions. The Company does not currently have any share-based compensation issued or outstanding other than restricted stock.
	Contingencies
	In the normal course of business, there are various lawsuits, claims, and other contingencies pending against the Company. On a quarterly basis, the Company evaluates whether to establish provisions for estimated losses from those matters in accordance with ASC Topic 450, which states that a liability is recognized for a contingent loss when: (a) the underlying causal event has occurred prior to the balance sheet date; (b) it is probable that a loss has been incurred; and (c) there is a reasonable basis for estimating that loss. A liability is not recognized for a contingent loss when it is only possible or remotely possible that a loss has been incurred, however, possible contingent losses shall be disclosed. If the contingent loss (or an additional loss in excess of any accrual) is at least a reasonable possibility and material, then the Company discloses a reasonable estimate of the possible loss or range of loss, if such reasonable estimate can be made. If the Company cannot make a reasonable estimate of the possible material loss, or range of loss, then that fact is disclosed.
	The Company and its subsidiaries are parties to various legal proceedings of which the ultimate outcome cannot be ascertained at this time. Although the results of those legal proceedings cannot be predicted with certainty, the Company believes, based on current knowledge, that the resolution of any of these proceedings will not have a material effect on the Company’s consolidated financial condition or liquidity. However, the resolution of any of those proceedings could have a material impact on consolidated results of operations or cash flows in a given future reporting period as the proceedings are resolved.
	The Company has not been named as a party to any additional legal proceedings during the three or six months ended June 30, 2014.
	Recent Accounting Pronouncements
	In June 2014, the FASB issued Accounting Standards Update ("ASU") No. 2014-11, Transfers and Servicing (Topic 860): Repurchase-to-Maturity Transactions, Repurchase Financings, and Disclosures, which changes the accounting for repurchase-to-maturity transactions and repurchase financing arrangements. The guidance eliminates sale accounting for repurchase-to-maturity transactions and supersedes the guidance under which a transfer of a financial asset and a contemporaneous repurchase financing could be accounted for on a combined basis as a forward agreement, which has resulted in outcomes referred to as off-balance-sheet accounting. All of the Company's repurchase agreement transactions are accounted for as secured borrowings, therefore the accounting changes required by ASU 2014-11 do not impact the Company's consolidated financial statements. ASU 2014-11 also requires two additional disclosures about repurchase agreements and other similar transactions. The first disclosure requires an entity to disclose information on transfers accounted for as sales in transactions that are economically similar to repurchase agreements. The Company does not account for any of its repurchase agreement transactions as sales, therefore this new disclosure does not impact the Company's current disclosures. The second disclosure requires the following disclosures for repurchase agreements, securities lending transactions, and repurchase-to-maturity transactions that are accounted for as secured borrowings: a disaggregation of the gross obligation by the class of collateral pledged; the remaining contractual tenor of the agreements; and a discussion of the potential risks associated with the agreements and the related collateral pledged, including obligations arising from a decline in the fair value of the collateral pledged and how those risks are managed. The Company already provides these disclosures in its "Notes to the Unaudited Consolidated Financial Statements" and within "Liquidity and Capital Resources" in Item 2, "Management's Discussion and Analysis of Financial Condition and Results of Operations" of this Quarterly Report on Form 10-Q. The amendments provided in ASU 2014-11 are effective for public business entities for the first interim or annual period beginning after December 15, 2014. ASU 2014-11 will not have a material impact on the Company's consolidated financial statements.
	In addition, the FASB issued ASU No. 2014-12, Compensation - Stock Compensation (Topic 718): Accounting for Share-Based Payments When the Terms of an Award Provide That a Performance Target Could Be Achieved after the Requisite Service Period. The amendments in this ASU are effective for annual periods and interim periods within those annual periods beginning after December 15, 2015. The Company has not issued and is not anticipating to issue any share-based payments with terms that require a performance-based target, therefore this ASU will not have an impact on the Company's consolidated financial statements.

Net_Income_Per_Common_Share

Net Income Per Common Share	6 Months Ended
	Jun. 30, 2014
Earnings Per Share, Basic and Diluted [Abstract]	'
Net Income per Common Share	'
	NET (LOSS) INCOME PER COMMON SHARE
	Net (loss) income per common share is presented on both a basic and diluted basis.  Because the Company's Series A Cumulative Redeemable Preferred Stock and Series B Cumulative Redeemable Preferred Stock are redeemable at the Company's option for cash only, and may convert into shares of common stock only upon a change of control of the Company, the effect of those shares is excluded from the calculation of diluted net (loss) income per common share. Holders of unvested shares of our issued and outstanding restricted common stock are eligible to receive non-forfeitable dividends. As such, these unvested shares are considered participating securities as per ASC 260-10 and therefore are included in the computation of basic net (loss) income per share using the two-class method. Upon vesting, restrictions on transfer expire on each share of restricted stock, and each such share of restricted is converted to one equal share of common stock.
	The following table presents the calculation of the numerator and denominator for both basic and diluted net (loss) income per common share for the periods indicated:
		For the Three Months Ended
		June 30, 2014						June 30, 2013
		Net			Weighted-Average Common Shares			Net			Weighted-
		Income						Income			Average
											Common
											Shares
	Net (loss) income	$	(5,999	)				$	31,534
	Preferred stock dividends	(2,294		)				(2,092		)
	Net (loss) income to common shareholders	(8,293		)	54,711,108			29,442			54,973,561
	Effect of dilutive instruments (1)	—			—			—			—
	Diluted net (loss) income to common shareholders	$	(8,293	)	54,711,108			$	29,442		54,973,561
	Net (loss) income per common share:
	Basic and diluted				$	(0.15	)				$	0.54
		For the Six Months Ended
		June 30, 2014						June 30, 2013
		Net			Weighted-Average Common Shares			Net			Weighted-
		Income						Income			Average
											Common
											Shares
	Net (loss) income	$	(6,733	)				$	51,136
	Preferred stock dividends	(4,588		)				(3,313		)
	Net (loss) income to common shareholders	(11,321		)	54,668,591			47,823			54,638,651
	Effect of dilutive instruments (1)	—			—			—			—
	Diluted net (loss) income to common shareholders	$	(11,321	)	54,668,591			$	47,823		54,638,651
	Net (loss) income per common share:
	Basic and diluted				$	(0.21	)				$	0.88
	(1) The Company did not have any anti-dilutive securities outstanding during the three and six months ended June 30, 2014 or June 30, 2013.

Mortgage_Backed_Securities_Mor

Mortgage Backed Securities Mortgage backed securities (Notes)	6 Months Ended
	Jun. 30, 2014
Investments, Debt and Equity Securities [Abstract]	'
Mortgage-backed securities	'
	MORTGAGE-BACKED SECURITIES
	The following tables presents the components and weighted average coupon ("WAC") for the portion of the Company’s MBS designated as AFS as of June 30, 2014 and December 31, 2013:
		June 30, 2014
		Par		Net Premium (Discount)			Amortized Cost				Gross Unrealized Gain				Gross Unrealized Loss			Fair Value		WAC
	Agency:
	RMBS	$	2,360,799	$	132,342		$	2,493,141			$	7,657			$	(33,257	)	$	2,467,541	3.16	%
	CMBS	309,235		20,178			329,413				15,892				(109		)	345,196		5.23	%
	CMBS IO (1)	—		432,588			432,588				15,055				(143		)	447,500		0.88	%
	Total Agency AFS:	2,670,034		585,108			3,255,142				38,604				(33,509		)	3,260,237
	Non-Agency:
	RMBS	13,482		(6		)	13,476				198				(81		)	13,593		4.48	%
	CMBS	391,332		(17,190		)	374,142				27,166				—			401,308		4.96	%
	CMBS IO (1)	—		268,972			268,972				6,361				(506		)	274,827		0.7	%
	Total non-Agency AFS:	404,814		251,776			656,590				33,725				(587		)	689,728
	Total AFS securities	$	3,074,848	$	836,884		$	3,911,732			$	72,329			$	(34,096	)	$	3,949,965
	-1	The notional balance for Agency CMBS IO and non-Agency CMBS IO was $9,703,887 and $6,958,238, respectively, as of June 30, 2014.
		31-Dec-13
		Par		Net Premium (Discount)			Amortized Cost				Gross Unrealized Gain				Gross Unrealized Loss			Fair Value		WAC
	Agency:
	RMBS	$	2,591,568	$	154,220		$	2,745,788			$	6,104			$	(59,742	)	$	2,692,150	3.22	%
	CMBS	273,830		19,061			292,891				10,793				(900		)	302,784		5.07	%
	CMBS IO (1)	—		453,766			453,766				9,895				(3,334		)	460,327		0.83	%
	Total Agency AFS:	2,865,398		627,047			3,492,445				26,792				(63,976		)	3,455,261
	Non-Agency:
	RMBS	13,845		(338		)	13,507				338				(80		)	13,765		4.61	%
	CMBS	375,703		(18,277		)	357,426				15,366				(3,511		)	369,281		5.1	%
	CMBS IO (1)	—		150,518			150,518				2,618				(1,999		)	151,137		0.66	%
	Total non-Agency AFS:	389,548		131,903			521,451				18,322				(5,590		)	534,183
	Total AFS securities	$	3,254,946	$	758,950		$	4,013,896			$	45,114			$	(69,566	)	$	3,989,444
	-1	As of December 31, 2013, the Company had Agency CMBS with an amortized cost of $26,920 and fair value of $28,717 which were designated as trading securities and are not included in this table. The Company changed the designation of these Agency CMBS to AFS during the three months ended June 30, 2014. Changes in the fair value of these MBS while they were designated as trading are recognized in net income within "fair value adjustments, net". Future changes in the fair value of these MBS which are now designated as AFS will be recognized in "other comprehensive income". As of June 30, 2014, the Company does not have any MBS designated as trading.
	-2	The notional balance for the Agency CMBS IO and non-Agency CMBS IO was $10,160,502 and $4,274,957, respectively, as of December 31, 2013.
	The following table presents certain information for those Agency MBS in an unrealized loss position as of June 30, 2014 and December 31, 2013:
		30-Jun-14							31-Dec-13
		Fair Value		Gross Unrealized Losses			# of Securities		Fair Value				Gross Unrealized Losses				# of Securities
	Continuous unrealized loss position for less than 12 months:
	Agency MBS	$	95,177	$	(741	)	18		$	1,912,937			$	(43,543	)		150
	Non-Agency MBS	11,711		(73		)	2		162,558				(5,435		)		39
	Continuous unrealized loss position for 12 months or longer:
	Agency MBS	$	1,905,306	$	(32,768	)	151		$	670,402			$	(20,433	)		67
	Non-Agency MBS	27,008		(514		)	8		6,310				(155		)		6
	Because the principal and interest related to Agency MBS are guaranteed by the government-sponsored entities Fannie Mae and Freddie Mac who have the implicit guarantee of the U.S. government, the Company does not consider any of the unrealized losses on its Agency MBS to be credit related. Although the unrealized losses are not credit related, the Company assesses its ability and intent to hold any Agency MBS with an unrealized loss until the recovery in its value. This assessment is based on the amount of the unrealized loss and significance of the related investment as well as the Company’s current leverage and anticipated liquidity.  Based on this analysis, the Company has determined that the unrealized losses on its Agency MBS as of June 30, 2014 and December 31, 2013 were temporary.
	The Company also reviews any non-Agency MBS in an unrealized loss position to evaluate whether any decline in fair value represents an OTTI. The evaluation includes a review of the credit ratings of these non-Agency MBS and the seasoning of the mortgage loans collateralizing these securities as well as the estimated future cash flows which include projected losses. The Company performed this evaluation for the non-Agency MBS in an unrealized loss position and has determined that there have not been any adverse changes in the timing or amount of estimated future cash flows that necessitate a recognition of OTTI amounts as of June 30, 2014 or December 31, 2013.

Repurchase_Agreements_Notes

Repurchase Agreements (Notes)	6 Months Ended
	Jun. 30, 2014
Disclosure of Repurchase Agreements [Abstract]	'
Repurchase Agreements	'
	REPURCHASE AGREEMENTS
	The following tables present the components of the Company’s repurchase agreements as of June 30, 2014 and December 31, 2013 by the fair value and type of securities pledged as collateral:
		June 30, 2014
	Collateral Type	Balance			Weighted			Fair Value of
					Average Rate			Collateral Pledged
	Agency RMBS	$	2,242,441		0.33	%		2,332,716
	Agency CMBS	262,822			0.35	%		316,139
	Agency CMBS IOs	377,554			0.97	%		447,501
	Non-Agency RMBS	10,279			1.65	%		12,735
	Non-Agency CMBS	321,769			1.18	%		391,437
	Non-Agency CMBS IO	216,644			1.1	%		265,278
	Securitization financing bonds	15,576			1.5	%		17,775
	Deferred costs	(35		)	n/a			n/a
		$	3,447,050		0.54	%		$	3,783,581
		December 31, 2013
	Collateral Type	Balance			Weighted			Fair Value of Collateral Pledged
					Average Rate
	Agency RMBS	$	2,522,503		0.42	%		2,598,158
	Agency CMBS	246,849			0.39	%		306,318
	Agency CMBS IOs	369,948			1.16	%		449,072
	Non-Agency RMBS	10,569			1.8	%		12,746
	Non-Agency CMBS	303,674			1.27	%		367,859
	Non-Agency CMBS IOs	106,803			1.27	%		136,227
	Securitization financing bonds	20,651			1.59	%		19,686
	Deferred costs	(243		)	n/a			n/a
		$	3,580,754		0.61	%		$	3,890,066
	The combined weighted average original term to maturity for the Company’s repurchase agreements decreased to 70 days as of June 30, 2014 from 114 days as of December 31, 2013. The following table provides a summary of the original maturities as of June 30, 2014 and December 31, 2013:
	Original Maturity	June 30,			December 31,
		2014			2013
	30 days or less	$	362,588		$	206,112
	31 to 60 days	797,617			492,145
	61 to 90 days	1,208,340			665,020
	91 to 120 days	921,603			783,371
	121 to 190 days	156,937			1,434,349
	Deferred costs	(35		)	(243		)
		$	3,447,050		$	3,580,754
	As of June 30, 2014, shareholders' equity at risk did not exceed 10% for any of the Company's counterparties. The Company had $27,888 of its repurchase agreement balance as of June 30, 2014 outstanding under a two-year repurchase facility with Wells Fargo Bank National Association. This facility provides an aggregate maximum borrowing capacity of $250,000 and matures on August 6, 2015, subject to early termination provisions contained in the master repurchase agreement. The facility is collateralized primarily by CMBS IO, and its weighted average borrowing rate as of June 30, 2014 was 1.46%.
	As of June 30, 2014, the Company had repurchase agreement amounts outstanding with 23 of its 32 available counterparties. The Company's counterparties, as set forth in the master repurchase agreement with the counterparty, require the Company to comply with various customary operating and financial covenants, including, but not limited to, minimum net worth, maximum declines in net worth in a given period, and maximum leverage requirements as well as maintaining the Company's REIT status.  In addition, some of the agreements contain cross default features, whereby default under an agreement with one lender simultaneously causes default under agreements with other lenders. To the extent that the Company fails to comply with the covenants contained in these financing agreements or is otherwise found to be in default under the terms of such agreements, the counterparty has the right to accelerate amounts due under the master repurchase agreement. The Company was in compliance with all covenants as of June 30, 2014.

Derivatives

Derivatives	6 Months Ended
	Jun. 30, 2014
Derivative Instruments and Hedging Activities Disclosure [Abstract]	'
Derivatives	'
	DERIVATIVES
	The Company utilizes derivative instruments to economically hedge a portion of its exposure to market risks, primarily interest rate risk. The principal instruments used to hedge these risks are interest rate swaps and Eurodollar futures. The objective of the Company's risk management strategy is to mitigate declines in book value resulting from fluctuations in the fair value of the Company's assets from changing interest rates and to protect the Company's earnings from rising interest rates. The Company seeks to limit its exposure to changes in interest rates but does not seek to eliminate this risk. Please refer to Note 1 for information related to the Company's accounting policy for its derivative instruments.
	The table below summarizes information about the Company’s derivative instruments on its consolidated balance sheet as of the dates indicated:
						June 30, 2014						31-Dec-13
	Type of Derivative Instrument		Accounting Designation		Balance Sheet Location:	Fair Value			Aggregate Notional Amount			Fair Value			Aggregate Notional Amount
	Interest rate swaps		Non-hedging		Derivative assets	$	5,237		$	290,000		$	18,488		$	575,000
	Interest rate swaps		Non-hedging			$	(2,835	)	$	410,000		$	(1,336	)	$	215,000
	Eurodollar futures (1)		Non-hedging			(21,139		)	11,400,000			(5,345		)	9,000,000
					Derivative liabilities	$	(23,974	)	$	11,810,000		$	(6,681	)	$	9,215,000
	-1	The Eurodollar futures aggregate notional amount represents the total notional of the 3-month contracts with expiration dates from 2016 to 2020. The maximum notional outstanding for any future 3-month period did not exceed $1,275,000 as of June 30, 2014 and $1,175,000 as of December 31, 2013.
	During the six months ended June 30, 2014, the Company added Eurodollar futures with a total notional of $2,400,000 and interest rate swaps with a total notional of $75,000. The Company also terminated a total notional of $165,000 in interest rate swaps. There were no interest rate swaps or Eurodollar futures that expired during the six months ended June 30, 2014. The following table summarizes the contractual maturities remaining for the Company’s outstanding interest rate swap agreements as of June 30, 2014:
	Remaining		Notional Amount			Weighted-Average
	Maturity					Fixed Rate Swapped
	37-48 months		185,000			0.92	%
	49-60 months		235,000			1.45	%
	61-72 months		25,000			1.61	%
	73-84 months		75,000			2.24	%
	85-108 months		30,000			1.93	%
	109-127 months		150,000			2.17	%
			$	700,000		1.57	%
	The table below provides detail of the Company's "(loss) gain on derivative instruments, net" by type of interest rate derivative for the periods indicated:
			Three Months Ended						Six Months Ended
			June 30,						June 30,
	Type of Derivative Instrument		2014			2013			2014			2013
	Interest rate swaps		$	(11,694	)	$	11,353		$	(20,702	)	$	11,336
	Eurodollar futures		(11,380		)	—			(15,794		)	—
	(Loss) gain on derivative instruments, net		$	(23,074	)	$	11,353		$	(36,496	)	$	11,336
	Effective June 30, 2013, the Company de-designated certain interest rate swap agreements as cash flow hedges under ASC Topic 815. There is a net unrealized loss of $5,468 remaining in AOCI on the Company's consolidated balance sheet as of June 30, 2014 which represents the activity related to these interest rate swap agreements while they were previously designated as cash flow hedges, and this amount will be recognized in the Company's net income as a portion of "interest expense" over the remaining contractual life of the agreements. All forecasted transactions associated with interest rate swap agreements previously designated as cash flow hedges are expected to occur. No amounts have been reclassified to net income in any period in connection with forecasted transactions that are no longer considered probable of occurring. The Company estimates the portion of existing net unrealized loss on discontinued cash flow hedges expected to be reclassified to net income within the next 12 months is $4,756. The Company reclassified $1,608 and $3,896 from AOCI to net loss for the three and six months ended June 30, 2014 related to amortization of the net unrealized loss remaining in AOCI at the time the Company discontinued its cash flow hedge accounting. For the three and six months June 30, 2013, the Company reclassified $4,693 and $8,796 from AOCI to net income related to recognition of interest expense from cash flow hedging transactions.
	Many of the Company's interest rate swaps were entered into under bilateral agreements which contain various covenants related to the Company’s credit risk. Specifically, if the Company defaults on any of its indebtedness, including those circumstances whereby repayment of the indebtedness has not yet been accelerated by the lender, or is declared in default of any of its covenants with any counterparty, then the Company could also be declared in default under the bilateral agreement. Additionally, these agreements allow those counterparties to require settlement of its outstanding derivative transactions if the Company fails to earn GAAP net income excluding derivative gains and losses greater than one dollar as measured on a rolling two quarter basis. These interest rate agreements also contain provisions whereby, if the Company fails to maintain a minimum net amount of shareholders’ equity, then the Company may be declared in default on its derivative obligations. The Company was in compliance with all covenants under bilateral agreements on June 30, 2014.

Fair_Value_of_Financial_Instru

Fair Value of Financial Instruments (Notes)	6 Months Ended
	Jun. 30, 2014
Fair Value Disclosures [Abstract]	'
Fair Value of Financial Instruments	'
	FAIR VALUE OF FINANCIAL INSTRUMENTS
	ASC Topic 820 defines fair value as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. ASC 820 clarifies that fair value should be based on the assumptions market participants would use when pricing an asset or liability and also requires an entity to consider all aspects of nonperformance risk, including the entity's own credit standing, when measuring fair value of a liability. ASC Topic 820 established a valuation hierarchy of three levels as follows:
	•	Level 1 – Inputs are unadjusted, quoted prices in active markets for identical assets or liabilities as of the measurement date.
	•	Level 2 – Inputs include quoted prices in active markets for similar assets or liabilities; quoted prices in inactive markets for identical or similar assets or liabilities; or inputs either directly observable or indirectly observable through correlation with market data at the measurement date and for the duration of the instrument’s anticipated life.
	•	Level 3 – Unobservable inputs are supported by little or no market activity. The unobservable inputs represent management’s best estimate of how market participants would price the asset or liability at the measurement date.  Consideration is given to the risk inherent in the valuation technique and the risk inherent in the inputs to the model.
	The following table presents the fair value of the Company’s assets and liabilities presented on its consolidated balance sheets, segregated by the hierarchy level of the fair value estimate, that are measured at fair value on a recurring basis as of the dates indicated:
		June 30, 2014
		Fair Value				Level 1 - Unadjusted Quoted Prices in Active Markets			Level 2 - Observable Inputs			Level 3 - Unobservable Inputs
	Assets:
	Mortgage-backed securities	$	3,949,965			$	—		$	3,884,723		$	65,242
	Derivative assets	5,237				—			5,237			—
	Total assets carried at fair value	$	3,955,202			$	—		$	3,889,960		$	65,242
	Liabilities:
	Derivative liabilities	$	23,974			$	21,139		$	2,835		$	—
	Total liabilities carried at fair value	$	23,974			$	21,139		$	2,835		$	—
		December 31, 2013
		Fair Value				Level 1 - Unadjusted Quoted Prices in Active Markets			Level 2 - Observable Inputs			Level 3 - Unobservable Inputs
	Assets:
	Mortgage-backed securities	$	4,018,161			$	—		$	3,944,681		$	73,480
	Derivative assets	18,488				—			18,488			—
	Total assets carried at fair value	$	4,036,649			$	—		$	3,963,169		$	73,480
	Liabilities:
	Derivative liabilities	$	6,681			$	5,345		$	1,336		$	—
	Total liabilities carried at fair value	$	6,681			$	5,345		$	1,336		$	—
	The Company did not have assets or liabilities measured at fair value on a non-recurring basis as of June 30, 2014 or December 31, 2013.
	The Company's derivative assets and liabilities include interest rate swaps and Eurodollar futures. Interest rate swaps are valued using the income approach with the primary input being the forward interest rate swap curve, which is considered an observable input and thus their fair values are considered Level 2 measurements. Eurodollar futures are valued based on closing exchange prices on these contracts. Accordingly, these financial futures are classified as Level 1.
	Agency MBS, as well a majority of non-Agency MBS, are substantially similar to securities that either are currently actively traded or have been recently traded in their respective market. Their fair values are derived from an average of multiple dealer quotes and thus are considered Level 2 fair value measurements. The Company’s remaining non-Agency MBS are comprised of securities for which there are not substantially similar securities that trade frequently, and their fair values are therefore considered Level 3 measurements. The Company determines the fair value of its Level 3 securities by discounting the estimated future cash flows derived from cash flow models using assumptions that are confirmed to the extent possible by third party dealers or other pricing indicators. Significant inputs into those pricing models are Level 3 in nature due to the lack of readily available market quotes. Information utilized in those pricing models include the security’s credit rating, coupon rate, estimated prepayment speeds, expected weighted average life, collateral composition, estimated future interest rates, expected credit losses, and credit enhancement as well as certain other relevant information. Significant changes in any of these inputs in isolation would result in a significantly different fair value measurement. Generally Level 3 assets are most sensitive to the default rate and severity assumptions.
	The table below presents information about the significant unobservable inputs used in the fair value measurement for the Company's Level 3 non-Agency CMBS and RMBS as of June 30, 2014:
		Quantitative Information about Level 3 Fair Value Measurements (1)
		Prepayment Speed		Default Rate			Severity		Discount Rate
	Non-Agency CMBS	20 CPY		2.5	%		35	%	8.9	%
	Non-Agency RMBS	10 CPR		1	%		20	%	6.8	%
	-1	Data presented are weighted averages.
	The following table presents the activity of the instruments fair valued at Level 3 during the three and six months ended June 30, 2014:
		Level 3 Fair Values
		Three Months Ended										Six Months Ended
		June 30, 2014										June 30, 2014
		Non-Agency CMBS				Non-Agency RMBS			Total assets			Non-Agency CMBS			Non-Agency RMBS			Total assets
	Balance as of beginning of period	$	63,832			$	2,555		$	66,387		$	70,733		$	2,747		$	73,480
	Unrealized gain (loss) included in OCI	173				3			176			200			(123		)	77
	Principal payments	(1,315		)		(60		)	(1,375		)	(8,308		)	(456		)	(8,764		)
	Accretion	54				—			54			119			330			449
	Balance as of end of period	$	62,744			$	2,498		$	65,242		$	62,744		$	2,498		$	65,242
	The following table presents a summary of the recorded basis and estimated fair values of the Company’s financial instruments as of the dates indicated:
		June 30, 2014							December 31, 2013
		Recorded Basis				Fair Value			Recorded Basis			Fair Value
	Assets:
	Mortgage-backed securities	$	3,949,965			$	3,949,965		$	4,018,161		$	4,018,161
	Mortgage loans held for investment, net (1)	52,564				44,252			55,423			46,383
	Derivative assets	5,237				5,237			18,488			18,488
	Liabilities:
	Repurchase agreements (2)	$	3,447,050			$	3,447,085		$	3,580,754		$	3,580,997
	Non-recourse collateralized financing (1)	12,073				11,603			12,914			12,414
	Derivative liabilities	23,974				23,974			6,681			6,681
	(1) The Company determines the fair value of its mortgage loans held for investment, net and its non-recourse collateralized financing using internally developed cash flow models with inputs similar to those used to estimate fair value of the Company's Level 3 non-Agency MBS.
	(2) The difference between the recorded basis of repurchase agreements and their fair value is the deferred cost of the 2-year repurchase facility.

Shareholders_Equity

Shareholders' Equity	6 Months Ended
	Jun. 30, 2014
Equity [Abstract]	'
Shareholders' Equity	'
	SHAREHOLDERS' EQUITY
	Preferred Stock
	The Company has 2,300,000 shares of its 8.50% Series A Cumulative Redeemable Preferred Stock and 2,250,000 shares of its 7.625% Series B Cumulative Redeemable Preferred Stock issued and outstanding as of June 30, 2014 (collectively, the "Preferred Stock"). The Preferred Stock has no maturity and will remain outstanding indefinitely unless redeemed or otherwise repurchased or converted into common stock pursuant to the terms of the Preferred Stock. Except under certain limited circumstances intended to preserve the Company's REIT status, upon the occurrence of a change in control as defined in Article IIIA, Section 7(d) of the Company’s Articles of Incorporation, or to avoid the direct or indirect imposition of a penalty tax in respect of, or to protect the tax status of, any of the Company’s real estate mortgage investment conduits (“REMIC”) interests or a REMIC in which the Company may acquire an interest (as permitted by the Company’s Articles of Incorporation), the Company may not redeem the Series A Preferred Stock prior to July 31, 2017 or the Series B Preferred Stock prior to April 30, 2018. On or after these dates, at any time and from time to time, the Preferred Stock may be redeemed in whole, or in part, at the Company's option at a cash redemption price of $25.00 per share plus any accumulated and unpaid dividends. The Series A Preferred Stock pays a cumulative cash dividend equivalent to 8.50% of the $25.00 liquidation preference per share each year and the Series B Preferred Stock pays a cumulative cash dividend equivalent to 7.625% of the $25.00 liquidation preference per share each year. Because the Preferred Stock is redeemable only at the option of the issuer, it is classified as equity on the Company's consolidated balance sheet.
	Common Stock
	The following table presents a summary of the changes in the number of common shares outstanding for the periods presented:
		Six Months Ended
		June 30,
		2014		2013
	Balance as of beginning of period	54,310,484		54,268,915
	Common stock issued under DRIP	6,543		505,718
	Common stock issued under ATM program	—		180,986
	Common stock issued or redeemed under stock and incentive plans	471,210		270,158
	Common stock forfeited for tax withholding on share-based compensation	(59,150	)	(52,385	)
	Balance as of end of period	54,729,087		55,173,392
	The Company's Dividend Reinvestment and Share Purchase Plan ("DRIP") allows registered shareholders to automatically reinvest some or all of their quarterly common stock dividends in shares of the Company’s common stock and provides an opportunity for investors to purchase shares of the Company’s common stock, potentially at a discount to the prevailing market price. Of the 3,000,000 shares reserved for issuance under the Company's DRIP, there were 2,460,355 shares remaining for issuance as of June 30, 2014. The Company declared a second quarter common stock dividend of $0.25 per share payable on July 31, 2014 to shareholders of record as of July 3, 2014. There was no discount for shares purchased through the DRIP during the second quarter of 2014.
	The Company had approximately 7,416,520 shares of common stock that remain available to offer and sell through its sales agent, JMP Securities LLC, under its "at the market", or "ATM" program, as of June 30, 2014.
	Of the $50,000 authorized by the Company's Board of Directors for the repurchase of its common stock through December 31, 2014, approximately $42,145 remains available for repurchase at the Company's option as of June 30, 2014.
	2009 Stock and Incentive Plan. Of the 2,500,000 shares of common stock authorized for issuance under its 2009 Stock and Incentive Plan, the Company had 1,078,908 available for issuance as of June 30, 2014. Total stock-based compensation expense recognized by the Company for the three and six months ended June 30, 2014 was $683 and $1,355 compared to $625 and $1,115 for the three and six months ended June 30, 2013.
	The following table presents a rollforward of the restricted stock activity for the periods indicated:
		Three Months Ended				Six Months Ended
		June 30,				June 30,
		2014		2013		2014		2013
	Restricted stock outstanding as of beginning of period	760,712		434,163		520,969		448,283
	Restricted stock granted	29,175		115,558		457,538		255,158
	Restricted stock vested	(43,057	)	(22,918	)	(231,677	)	(176,638	)
	Restricted stock outstanding as of end of period	746,830		526,803		746,830		526,803
	The combined grant date fair value of the restricted stock issued by the Company for the three and six months ended June 30, 2014 was $250 and $3,703, respectively, compared to $1,217 and $2,708 for the three and six months ended June 30, 2013, respectively. As of June 30, 2014, the balance of the Company’s outstanding restricted stock remaining to be amortized into compensation expense is $5,659 of which $1,364 is expected to be amortized in the remainder of 2014, $2,265 in 2015, $1,453 in 2016, $541 in 2017, and $36 in 2018. The Company did not have any other type of stock-based compensation issued or outstanding as of June 30, 2014 or December 31, 2013 other than its restricted stock.

Subsequent_Events

Subsequent Events	6 Months Ended
	Jun. 30, 2014
Subsequent Events [Abstract]	'
Subsequent Events	'
	SUBSEQUENT EVENTS
	Management has evaluated events and circumstances occurring as of and through the date this Quarterly Report on Form 10-Q was filed with the SEC and has determined that there have been no significant events or circumstances that qualify as a "recognized" or "nonrecognized" subsequent event as defined by ASC Topic 855.

Summary_of_Significant_Account1

Summary of Significant Accounting Policies (Policies)	6 Months Ended
	Jun. 30, 2014
Accounting Policies [Abstract]	'
Organization [Text Block]	'
	Organization
	Dynex Capital, Inc., ("Company”) was incorporated in the Commonwealth of Virginia on December 18, 1987 and commenced operations in February 1988. The Company primarily earns income from investing on a leveraged basis in mortgage-backed securities ("MBS") that are issued or guaranteed by the U.S. Government or U.S. Government sponsored agencies ("Agency MBS") and MBS issued by others ("non-Agency MBS").
Basis of Presentation [Policy Text Block]	'
	Basis of Presentation
	The accompanying consolidated financial statements of Dynex Capital, Inc. and its qualified real estate investment trust (“REIT”) subsidiaries and its taxable REIT subsidiary (together, “Dynex” or the “Company”) have been prepared in accordance with the instructions to the Quarterly Report on Form 10-Q and Article 10, Rule 10-01 of Regulation S-X promulgated by the Securities and Exchange Commission (the “SEC”). Accordingly, they do not include all of the information and notes required by accounting principles generally accepted in the United States of America (“GAAP”) for complete financial statements. The financial information included herein is unaudited; however, in the opinion of management, all significant adjustments, consisting of normal recurring accruals considered necessary for a fair presentation of the consolidated financial statements, have been included. Operating results for the three and six months ended June 30, 2014 are not necessarily indicative of the results that may be expected for any other interim periods or for the entire year ending December 31, 2014. The unaudited consolidated financial statements included herein should be read in conjunction with the audited financial statements and notes thereto included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2013 filed with the SEC.
Reclassifications [Policy Text Block]	'
	Reclassifications
	Certain items in the prior periods' consolidated financial statements have been reclassified to conform to the current year’s presentation. The Company's consolidated balance sheet as of December 31, 2013 now presents its "securitized mortgage loans, net" and "other investments, net" together as "mortgage loans held for investment, net". In addition, the Company has combined the presentation of its consolidated statements of income and its consolidated statements of other comprehensive income together as one financial statement which is now titled "consolidated statements of comprehensive income". The Company's "interest income - securitized mortgage loans" and "interest income-other investments" on its consolidated statement of income for the three and six months ended June 30, 2013 is now presented together as "interest income-mortgage loans held for investment" on its consolidated statement of comprehensive income for the three and six months ended June 30, 2013. In addition, changes in fair value and other activity related to the Company's derivative instruments have been reclassified from "fair value adjustments, net" to "gain (loss) on derivative instruments, net", and the respective amounts on the Company's consolidated statement of cash flows for the six months ended June 30, 2013 have been changed to reflect this reclassification. These presentation changes have no effect on reported total assets, total liabilities, results of operations, or cash flow activities.
Consolidation [Policy Text Block]	'
	Consolidation
	The consolidated financial statements include the accounts of the Company, its qualified REIT subsidiaries and its taxable REIT subsidiary. The consolidated financial statements represent the Company’s accounts after the elimination of intercompany balances and transactions. The Company consolidates entities in which it owns more than 50% of the voting equity and control does not rest with others and variable interest entities in which it is determined to be the primary beneficiary in accordance with Financial Accounting Standards Board ("FASB") Accounting Standards Codification ("ASC") Topic 810-10. The Company follows the equity method of accounting for investments in which it owns greater than a 20% and less than 50% interest in partnerships and corporate joint ventures or when it is able to influence the financial and operating policies of the investee but owns less than 50% of the voting equity. The Company did not have any investments in which it owned less than a 50% interest in the voting equity as of June 30, 2014 or December 31, 2013.
	In accordance with ASC Topic 810-10, the Company also consolidates certain trusts through which it has securitized mortgage loans held for investment. Additional information regarding the accounting policy for its securitized mortgage loans is provided below under "Mortgage Loans Held for Investment, Net".
Use of Estimates [Policy Text Block]	'
	Use of Estimates
	The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and the disclosure of contingent assets and liabilities at the date of the financial statements as well as the reported amounts of revenue and expenses during the reported period.  Actual results could differ from those estimates.  The most significant estimates used by management include, but are not limited to, fair value measurements of its investments, other-than-temporary impairments, contingencies, and amortization of premiums and discounts. These items are discussed further below within this note to the consolidated financial statements.
Federal Income Taxes [Policy Text Block]	'
	Income Taxes
	The Company has elected to be taxed as a REIT under the Internal Revenue Code of 1986 and the corresponding provisions of state law. To qualify as a REIT, the Company must meet certain tests including investing in primarily real estate-related assets and the required distribution of at least 90% of its annual REIT taxable income to stockholders after consideration of its net operating loss carryforward and not including taxable income retained in its taxable subsidiaries. As a REIT, the Company generally will not be subject to federal income tax on the amount of its income or gain that is distributed as dividends to shareholders.
	The Company assesses its tax positions for all open tax years and determines whether the Company has any material unrecognized liabilities in accordance with ASC Topic 740. The Company records these liabilities, if any, to the extent they are deemed more likely than not to have been incurred.
Mortgage Backed Securities [Policy Text Block]	'
	Mortgage-Backed Securities
	In accordance with ASC Topic 320, the Company has designated its investments in MBS as available-for-sale ("AFS"). All of the Company’s MBS are recorded at their fair value on its consolidated balance sheet. Changes in fair value for the Company's AFS securities are reported in other comprehensive income ("OCI") until the security is collected, disposed of, or determined to be other than temporarily impaired. Although the Company generally intends to hold its AFS securities until maturity, it may, from time to time, sell any of these securities as part of the overall management of its business. Upon the sale of an AFS security, any unrealized gain or loss is reclassified out of accumulated other comprehensive income ("AOCI") into net income as a realized "gain (loss) on sale of investments, net" using the specific identification method.
	The Company’s MBS pledged as collateral against repurchase agreements and derivative instruments are included in MBS on the consolidated balance sheets with the fair value of the MBS pledged disclosed parenthetically.
	Interest Income, Premium Amortization, and Discount Accretion. Interest income on MBS is accrued based on the outstanding principal balance (or notional balance in the case of interest-only, or "IO", securities) and their contractual terms.  Premiums and discounts on Agency MBS as well as any non-Agency MBS rated 'AA' and higher at the time of purchase are amortized into interest income over the expected life of such securities using the effective yield method and adjustments to premium amortization are made for actual cash payments as well as changes in projected future cash payments in accordance with ASC Topic 310-20. The Company's projections of future cash payments are based on input and analysis received from external sources and internal models, and includes assumptions about the amount and timing of credit losses, loan prepayment rates, fluctuations in interest rates, and other factors. On at least a quarterly basis, the Company reviews and makes any necessary adjustments to its cash flow projections and updates the yield recognized on these assets.
	The Company has non-Agency MBS that were rated less than 'AA' at the time of purchase by at least one national rating agency at discounts to their par value, and management does not believe these discounts to be substantial. The Company accretes the discount into income over the security's expected life, which reflects management's estimate of the security's projected cash flows in accordance with ASC Topic 325-40. Future changes in the timing of projected cash flows or differences arising between projected cash flows and actual cash flows received may result in a prospective change in the effective yield on those securities.
	The accrual of interest on MBS is discontinued when, in the opinion of management, it is probable that all amounts contractually due will not be collected, and in certain instances, as a result of an other-than-temporary impairment analysis (see discussion below). All interest accrued but not collected for investments that are placed on a non-accrual status or are charged-off is reversed against interest income. Interest on these investments is accounted for on the cash-basis or cost-recovery method until the affected investment or investments qualify for return to accrual status. Investments are returned to accrual status when all the principal and interest amounts contractually due are brought current and future payments are reasonably assured.
	Determination of MBS Fair Value. In accordance with ASC Topic 820, the Company determines the fair value for the majority of its MBS based upon prices obtained from third-party pricing services and broker quotes. The remainder of the Company's MBS are valued by discounting the estimated future cash flows derived from cash flow models that utilize information such as the security's coupon rate, estimated prepayment speeds, expected weighted average life, collateral composition, estimated future interest rates, expected losses, and credit enhancements as well as certain other relevant information. The Company's application of ASC Topic 820 guidance is discussed further in Note 7.
	Other-than-Temporary Impairment. The Company evaluates all MBS in its investment portfolio for other-than-temporary impairments ("OTTI") by comparing the amortized cost of each security in an unrealized loss position against the present value of expected future cash flows of the security. If there has been a significant adverse change in the cash flow expectations for a security resulting in its amortized cost becoming greater than the present value of its expected future cash flows, an other-than-temporary credit impairment has occurred. If the Company does not intend to sell and is not more likely than not required to sell the security, the credit loss is recognized in earnings and the balance of the unrealized loss is recognized in other comprehensive income (loss). If the Company intends to sell the security or will be more likely than not required to sell the security, the full unrealized loss is recognized in earnings.
	In periods after the recognition of an OTTI loss for MBS, the Company accounts for the other-than-temporarily impaired MBS as if the debt security had been purchased on the measurement date of the OTTI at an amortized cost basis equal to the previous amortized cost basis less the OTTI recognized in earnings. For MBS for which OTTIs were recognized in earnings, the difference between the new amortized cost basis and the cash flows expected to be collected shall be accreted into interest income using the effective interest method. The Company continues to estimate the present value of cash flows expected to be collected over the life of the MBS. If upon subsequent evaluation, there is an increase in the cash flows expected to be collected or if actual cash flows are greater than cash flows previously expected, such changes will be accounted for as a prospective adjustment to the accretable yield in accordance with ASC Topic 310-30 even if the MBS would not otherwise be within the scope of that guidance. Please see Note 3 for additional information related to the Company's evaluation for OTTI.
Mortgage Loans Held for Investment, Net [Policy Text Block]	'
	Mortgage Loans Held for Investment, Net
	Mortgage loans held for investment, net consist of mortgage loans originated or purchased by the Company from 1992-1998, and these mortgage loans are reported at amortized cost in accordance with ASC Topic 310-10. Substantially all of these loans have been pledged as collateral to support the repayment of securitization financing bonds issued by the Company. The associated securitization financing bonds are treated as debt of the Company and are presented as "non-recourse collateralized financing" on the consolidated balance sheet. Securitized mortgage loans can only be sold subject to the lien of the respective securitization financing indenture. An allowance has been established for currently existing and probable losses on all of the Company's mortgage loans held for investment.
Repurchase Agreements [Policy Text Block]	'
	Repurchase Agreements
	Repurchase agreements are accounted for as secured borrowings under which the Company pledges its securities as collateral to secure a loan, which is equal in value to a specified percentage of the estimated fair value of the pledged collateral. The Company retains beneficial ownership of the pledged collateral. At the maturity of a repurchase agreement, the Company is required to repay the loan and concurrently receives back its pledged collateral from the lender or, with the consent of the lender, the Company may renew the agreement at the then prevailing financing rate. A repurchase agreement lender may require the Company to pledge additional collateral in the event of a decline in the fair value of the collateral pledged. Repurchase agreement financing is recourse to the Company and the assets pledged. Most of the Company’s repurchase agreements are based on the September 1996 version of the Bond Market Association Master Repurchase Agreement, which generally provides that the lender, as buyer, is responsible for obtaining collateral valuations from a generally recognized source agreed to by both the Company and the lender, or, in an instance when such source is not available, the value determination is made by the lender.
Derivative Instruments [Policy Text Block]	'
	Derivative Instruments
	The Company accounts for its derivative instruments, which currently include interest rate swaps and Eurodollar futures, in accordance with ASC Topic 815, which requires an entity to recognize all derivatives as either assets or liabilities in the balance sheet and to measure those instruments at fair value. Gains and losses associated with derivative instruments are recorded in "(loss) gain on derivative instruments, net" in our consolidated statement of comprehensive income.
	Effective June 30, 2013, the Company discontinued cash flow hedge accounting for derivative instruments which had previously been accounted for as cash flow hedges under ASC Topic 815. Activity up to and including June 30, 2013 for those agreements previously designated as cash flow hedges was recorded in accordance with cash flow hedge accounting as prescribed by ASC Topic 815, which states that the effective portion of the hedge relationship on an instrument designated as a cash flow hedge is reported in the current period's other comprehensive income while the ineffective portion is immediately reported as a component of the current period’s net income. The balance remaining in AOCI related to the de-designated cash flow hedges is amortized into the Company's net income as a portion of "interest expense" over the remaining life of the interest rate swap agreements. Subsequent to June 30, 2013, changes in the fair value of the Company's derivative instruments, plus periodic settlements, are recorded in the Company's net income as a portion of "(loss) gain on derivative instruments, net".
	The use of derivatives creates exposure to credit risk relating to potential losses that could be recognized in the event that the counterparties to these instruments fail to perform their obligations under the contracts. We attempt to minimize this risk by limiting our counterparties to major financial institutions with acceptable credit ratings, monitoring positions with individual counterparties and adjusting posted collateral as required.
	Although MBS have characteristics that meet the definition of a derivative instrument, ASC 815 specifically excludes these instruments from its scope because they are accounted for as debt securities under ASC 320.
Stock-based Compensation [Policy Text Block]	'
	Share-Based Compensation
	Pursuant to the Company’s 2009 Stock and Incentive Plan ("SIP"), the Company may grant share-based compensation to eligible employees, directors or consultants or advisers to the Company, including stock awards, stock options, stock appreciation rights, dividend equivalent rights, performance shares, and restricted stock units. The Company's restricted stock currently issued and outstanding under this plan may be settled only in shares of its common stock, and therefore are treated as equity awards with their fair value measured at the grant date and recognized as compensation cost over a requisite service period with a corresponding credit to shareholders' equity as required by ASC Topic 718. The requisite service period is the period during which an employee is required to provide service in exchange for an award, which is equivalent to the vesting period specified in the terms of the share-based based award. None of the Company's restricted stock awards have performance based conditions. The Company does not currently have any share-based compensation issued or outstanding other than restricted stock.
Contingencies [Policy Text Block]	'
	Contingencies
	In the normal course of business, there are various lawsuits, claims, and other contingencies pending against the Company. On a quarterly basis, the Company evaluates whether to establish provisions for estimated losses from those matters in accordance with ASC Topic 450, which states that a liability is recognized for a contingent loss when: (a) the underlying causal event has occurred prior to the balance sheet date; (b) it is probable that a loss has been incurred; and (c) there is a reasonable basis for estimating that loss. A liability is not recognized for a contingent loss when it is only possible or remotely possible that a loss has been incurred, however, possible contingent losses shall be disclosed. If the contingent loss (or an additional loss in excess of any accrual) is at least a reasonable possibility and material, then the Company discloses a reasonable estimate of the possible loss or range of loss, if such reasonable estimate can be made. If the Company cannot make a reasonable estimate of the possible material loss, or range of loss, then that fact is disclosed.
	The Company and its subsidiaries are parties to various legal proceedings of which the ultimate outcome cannot be ascertained at this time. Although the results of those legal proceedings cannot be predicted with certainty, the Company believes, based on current knowledge, that the resolution of any of these proceedings will not have a material effect on the Company’s consolidated financial condition or liquidity. However, the resolution of any of those proceedings could have a material impact on consolidated results of operations or cash flows in a given future reporting period as the proceedings are resolved.
	The Company has not been named as a party to any additional legal proceedings during the three or six months ended June 30, 2014.
Recent Accounting Pronouncements [Text Block]	'
	Recent Accounting Pronouncements
	In June 2014, the FASB issued Accounting Standards Update ("ASU") No. 2014-11, Transfers and Servicing (Topic 860): Repurchase-to-Maturity Transactions, Repurchase Financings, and Disclosures, which changes the accounting for repurchase-to-maturity transactions and repurchase financing arrangements. The guidance eliminates sale accounting for repurchase-to-maturity transactions and supersedes the guidance under which a transfer of a financial asset and a contemporaneous repurchase financing could be accounted for on a combined basis as a forward agreement, which has resulted in outcomes referred to as off-balance-sheet accounting. All of the Company's repurchase agreement transactions are accounted for as secured borrowings, therefore the accounting changes required by ASU 2014-11 do not impact the Company's consolidated financial statements. ASU 2014-11 also requires two additional disclosures about repurchase agreements and other similar transactions. The first disclosure requires an entity to disclose information on transfers accounted for as sales in transactions that are economically similar to repurchase agreements. The Company does not account for any of its repurchase agreement transactions as sales, therefore this new disclosure does not impact the Company's current disclosures. The second disclosure requires the following disclosures for repurchase agreements, securities lending transactions, and repurchase-to-maturity transactions that are accounted for as secured borrowings: a disaggregation of the gross obligation by the class of collateral pledged; the remaining contractual tenor of the agreements; and a discussion of the potential risks associated with the agreements and the related collateral pledged, including obligations arising from a decline in the fair value of the collateral pledged and how those risks are managed. The Company already provides these disclosures in its "Notes to the Unaudited Consolidated Financial Statements" and within "Liquidity and Capital Resources" in Item 2, "Management's Discussion and Analysis of Financial Condition and Results of Operations" of this Quarterly Report on Form 10-Q. The amendments provided in ASU 2014-11 are effective for public business entities for the first interim or annual period beginning after December 15, 2014. ASU 2014-11 will not have a material impact on the Company's consolidated financial statements.
	In addition, the FASB issued ASU No. 2014-12, Compensation - Stock Compensation (Topic 718): Accounting for Share-Based Payments When the Terms of an Award Provide That a Performance Target Could Be Achieved after the Requisite Service Period. The amendments in this ASU are effective for annual periods and interim periods within those annual periods beginning after December 15, 2015. The Company has not issued and is not anticipating to issue any share-based payments with terms that require a performance-based target, therefore this ASU will not have an impact on the Company's consolidated financial statements.

Net_Income_Per_Common_Share_Ta

Net Income Per Common Share (Tables)	6 Months Ended
	Jun. 30, 2014
Earnings Per Share, Basic and Diluted [Abstract]	'
Schedule of Calculation of Numerator and Denominator in Net Income Per Common Share [Table Text Block]	'
	The following table presents the calculation of the numerator and denominator for both basic and diluted net (loss) income per common share for the periods indicated:
		For the Three Months Ended
		June 30, 2014						June 30, 2013
		Net			Weighted-Average Common Shares			Net			Weighted-
		Income						Income			Average
											Common
											Shares
	Net (loss) income	$	(5,999	)				$	31,534
	Preferred stock dividends	(2,294		)				(2,092		)
	Net (loss) income to common shareholders	(8,293		)	54,711,108			29,442			54,973,561
	Effect of dilutive instruments (1)	—			—			—			—
	Diluted net (loss) income to common shareholders	$	(8,293	)	54,711,108			$	29,442		54,973,561
	Net (loss) income per common share:
	Basic and diluted				$	(0.15	)				$	0.54
		For the Six Months Ended
		June 30, 2014						June 30, 2013
		Net			Weighted-Average Common Shares			Net			Weighted-
		Income						Income			Average
											Common
											Shares
	Net (loss) income	$	(6,733	)				$	51,136
	Preferred stock dividends	(4,588		)				(3,313		)
	Net (loss) income to common shareholders	(11,321		)	54,668,591			47,823			54,638,651
	Effect of dilutive instruments (1)	—			—			—			—
	Diluted net (loss) income to common shareholders	$	(11,321	)	54,668,591			$	47,823		54,638,651
	Net (loss) income per common share:
	Basic and diluted				$	(0.21	)				$	0.88
	(1) The Company did not have any anti-dilutive securities outstanding during the three and six months ended June 30, 2014 or June 30, 2013.

Mortgage_Backed_Securities_Mor1

Mortgage Backed Securities Mortgage backed securities (Tables)	6 Months Ended
	Jun. 30, 2014
Investments, Debt and Equity Securities [Abstract]	'
Available-for-sale Securities [Table Text Block]	'
	The following tables presents the components and weighted average coupon ("WAC") for the portion of the Company’s MBS designated as AFS as of June 30, 2014 and December 31, 2013:
		June 30, 2014
		Par		Net Premium (Discount)			Amortized Cost				Gross Unrealized Gain				Gross Unrealized Loss			Fair Value		WAC
	Agency:
	RMBS	$	2,360,799	$	132,342		$	2,493,141			$	7,657			$	(33,257	)	$	2,467,541	3.16	%
	CMBS	309,235		20,178			329,413				15,892				(109		)	345,196		5.23	%
	CMBS IO (1)	—		432,588			432,588				15,055				(143		)	447,500		0.88	%
	Total Agency AFS:	2,670,034		585,108			3,255,142				38,604				(33,509		)	3,260,237
	Non-Agency:
	RMBS	13,482		(6		)	13,476				198				(81		)	13,593		4.48	%
	CMBS	391,332		(17,190		)	374,142				27,166				—			401,308		4.96	%
	CMBS IO (1)	—		268,972			268,972				6,361				(506		)	274,827		0.7	%
	Total non-Agency AFS:	404,814		251,776			656,590				33,725				(587		)	689,728
	Total AFS securities	$	3,074,848	$	836,884		$	3,911,732			$	72,329			$	(34,096	)	$	3,949,965
	-1	The notional balance for Agency CMBS IO and non-Agency CMBS IO was $9,703,887 and $6,958,238, respectively, as of June 30, 2014.
		31-Dec-13
		Par		Net Premium (Discount)			Amortized Cost				Gross Unrealized Gain				Gross Unrealized Loss			Fair Value		WAC
	Agency:
	RMBS	$	2,591,568	$	154,220		$	2,745,788			$	6,104			$	(59,742	)	$	2,692,150	3.22	%
	CMBS	273,830		19,061			292,891				10,793				(900		)	302,784		5.07	%
	CMBS IO (1)	—		453,766			453,766				9,895				(3,334		)	460,327		0.83	%
	Total Agency AFS:	2,865,398		627,047			3,492,445				26,792				(63,976		)	3,455,261
	Non-Agency:
	RMBS	13,845		(338		)	13,507				338				(80		)	13,765		4.61	%
	CMBS	375,703		(18,277		)	357,426				15,366				(3,511		)	369,281		5.1	%
	CMBS IO (1)	—		150,518			150,518				2,618				(1,999		)	151,137		0.66	%
	Total non-Agency AFS:	389,548		131,903			521,451				18,322				(5,590		)	534,183
	Total AFS securities	$	3,254,946	$	758,950		$	4,013,896			$	45,114			$	(69,566	)	$	3,989,444
	-1	As of December 31, 2013, the Company had Agency CMBS with an amortized cost of $26,920 and fair value of $28,717 which were designated as trading securities and are not included in this table. The Company changed the designation of these Agency CMBS to AFS during the three months ended June 30, 2014. Changes in the fair value of these MBS while they were designated as trading are recognized in net income within "fair value adjustments, net". Future changes in the fair value of these MBS which are now designated as AFS will be recognized in "other comprehensive income". As of June 30, 2014, the Company does not have any MBS designated as trading.
	-2	The notional balance for the Agency CMBS IO and non-Agency CMBS IO was $10,160,502 and $4,274,957, respectively, as of December 31, 2013.
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value [Table Text Block]	'
	The following table presents certain information for those Agency MBS in an unrealized loss position as of June 30, 2014 and December 31, 2013:
		30-Jun-14							31-Dec-13
		Fair Value		Gross Unrealized Losses			# of Securities		Fair Value				Gross Unrealized Losses				# of Securities
	Continuous unrealized loss position for less than 12 months:
	Agency MBS	$	95,177	$	(741	)	18		$	1,912,937			$	(43,543	)		150
	Non-Agency MBS	11,711		(73		)	2		162,558				(5,435		)		39
	Continuous unrealized loss position for 12 months or longer:
	Agency MBS	$	1,905,306	$	(32,768	)	151		$	670,402			$	(20,433	)		67
	Non-Agency MBS	27,008		(514		)	8		6,310				(155		)		6

Repurchase_Agreements_Repurcha

Repurchase Agreements Repurchase Agreements (Tables)	6 Months Ended
	Jun. 30, 2014
Assets and Associated Liabilities of Transfers Accounted for as Secured Borrowings [Line Items]	'
Schedule of Assets and Associated Liabilities Accounted for as Secured Borrowings [Table Text Block]	'
	The following tables present the components of the Company’s repurchase agreements as of June 30, 2014 and December 31, 2013 by the fair value and type of securities pledged as collateral:
		June 30, 2014
	Collateral Type	Balance			Weighted			Fair Value of
					Average Rate			Collateral Pledged
	Agency RMBS	$	2,242,441		0.33	%		2,332,716
	Agency CMBS	262,822			0.35	%		316,139
	Agency CMBS IOs	377,554			0.97	%		447,501
	Non-Agency RMBS	10,279			1.65	%		12,735
	Non-Agency CMBS	321,769			1.18	%		391,437
	Non-Agency CMBS IO	216,644			1.1	%		265,278
	Securitization financing bonds	15,576			1.5	%		17,775
	Deferred costs	(35		)	n/a			n/a
		$	3,447,050		0.54	%		$	3,783,581
		December 31, 2013
	Collateral Type	Balance			Weighted			Fair Value of Collateral Pledged
					Average Rate
	Agency RMBS	$	2,522,503		0.42	%		2,598,158
	Agency CMBS	246,849			0.39	%		306,318
	Agency CMBS IOs	369,948			1.16	%		449,072
	Non-Agency RMBS	10,569			1.8	%		12,746
	Non-Agency CMBS	303,674			1.27	%		367,859
	Non-Agency CMBS IOs	106,803			1.27	%		136,227
	Securitization financing bonds	20,651			1.59	%		19,686
	Deferred costs	(243		)	n/a			n/a
		$	3,580,754		0.61	%		$	3,890,066
	The combined weighted average original term to maturity for the Company’s repurchase agreements decreased to 70 days as of June 30, 2014 from 114 days as of December 31, 2013. The following table provides a summary of the original maturities as of June 30, 2014 and December 31, 2013:
	Original Maturity	June 30,			December 31,
		2014			2013
	30 days or less	$	362,588		$	206,112
	31 to 60 days	797,617			492,145
	61 to 90 days	1,208,340			665,020
	91 to 120 days	921,603			783,371
	121 to 190 days	156,937			1,434,349
	Deferred costs	(35		)	(243		)
		$	3,447,050		$	3,580,754

Derivatives_Tables

Derivatives (Tables)	6 Months Ended
	Jun. 30, 2014
Derivative Instruments and Hedging Activities Disclosure [Abstract]	'
Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Table Text Block]	'
	The table below summarizes information about the Company’s derivative instruments on its consolidated balance sheet as of the dates indicated:
					June 30, 2014						31-Dec-13
	Type of Derivative Instrument	Accounting Designation		Balance Sheet Location:	Fair Value			Aggregate Notional Amount			Fair Value			Aggregate Notional Amount
	Interest rate swaps	Non-hedging		Derivative assets	$	5,237		$	290,000		$	18,488		$	575,000
	Interest rate swaps	Non-hedging			$	(2,835	)	$	410,000		$	(1,336	)	$	215,000
	Eurodollar futures (1)	Non-hedging			(21,139		)	11,400,000			(5,345		)	9,000,000
				Derivative liabilities	$	(23,974	)	$	11,810,000		$	(6,681	)	$	9,215,000
Schedule of Notional Amounts of Outstanding Derivative Positions [Table Text Block]	'
	The following table summarizes the contractual maturities remaining for the Company’s outstanding interest rate swap agreements as of June 30, 2014:
	Remaining	Notional Amount			Weighted-Average
	Maturity				Fixed Rate Swapped
	37-48 months	185,000			0.92	%
	49-60 months	235,000			1.45	%
	61-72 months	25,000			1.61	%
	73-84 months	75,000			2.24	%
	85-108 months	30,000			1.93	%
	109-127 months	150,000			2.17	%
		$	700,000		1.57	%
Schedule of Derivative Instruments Included in Trading Activities [Table Text Block]	'
	The table below provides detail of the Company's "(loss) gain on derivative instruments, net" by type of interest rate derivative for the periods indicated:
		Three Months Ended						Six Months Ended
		June 30,						June 30,
	Type of Derivative Instrument	2014			2013			2014			2013
	Interest rate swaps	$	(11,694	)	$	11,353		$	(20,702	)	$	11,336
	Eurodollar futures	(11,380		)	—			(15,794		)	—
	(Loss) gain on derivative instruments, net	$	(23,074	)	$	11,353		$	(36,496	)	$	11,336

Offsetting_Assets_and_Liabilit

Offsetting Assets and Liabilities Offsetting Assets (Tables)	6 Months Ended
	Jun. 30, 2014
Offsetting Assets [Line Items]	'
Offsetting Assets [Table Text Block]	'
		Offsetting of Assets
		Gross Amount of Recognized Assets		Gross Amount Offset in the Balance Sheet		Net Amount of Assets Presented in the Balance Sheet		Gross Amount Not Offset in the Balance Sheet						Net Amount
								Financial Instruments Received as Collateral			Cash Received as Collateral
	30-Jun-14
	Derivative assets	$	5,237	$	—	$	5,237	$	(1,039	)	$	(3,170	)	$	1,028
	December 31, 2013:
	Derivative assets	$	18,488	$	—	$	18,488	$	(193	)	$	(12,141	)	$	6,154

Offsetting_Assets_and_Liabilit1

Offsetting Assets and Liabilities Offsetting Liabilities (Tables)	6 Months Ended
	Jun. 30, 2014
Offsetting Liabilities [Line Items]	'
Offsetting Liabilities [Table Text Block]	'
		Offsetting of Liabilities
		Gross Amount of Recognized Liabilities		Gross Amount Offset in the Balance Sheet		Net Amount of Liabilities Presented in the Balance Sheet		Gross Amount Not Offset in the Balance Sheet						Net Amount
								Financial Instruments Posted as Collateral			Cash Posted as Collateral
	30-Jun-14
	Derivative liabilities	$	23,974	$	—	$	23,974	$	(1,495	)	$	(22,479	)	$	—
	Repurchase agreements	3,447,050		—		3,447,050		(3,447,050		)	—			—
		$	3,471,024	$	—	$	3,471,024	$	(3,448,545	)	$	(22,479	)	$	—
	December 31, 2013:
	Derivative liabilities	$	6,681	$	—	$	6,681	$	(1,299	)	$	(5,382	)	$	—
	Repurchase agreements	3,580,754		—		3,580,754		(3,580,754		)	—			—
		$	3,587,435	$	—	$	3,587,435	$	(3,582,053	)	$	(5,382	)	$	—

Fair_Value_of_Financial_Instru1

Fair Value of Financial Instruments (Tables)	6 Months Ended
	Jun. 30, 2014
Fair Value Disclosures [Abstract]	'
Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block]	'
	The following table presents the fair value of the Company’s assets and liabilities presented on its consolidated balance sheets, segregated by the hierarchy level of the fair value estimate, that are measured at fair value on a recurring basis as of the dates indicated:
		June 30, 2014
		Fair Value				Level 1 - Unadjusted Quoted Prices in Active Markets			Level 2 - Observable Inputs			Level 3 - Unobservable Inputs
	Assets:
	Mortgage-backed securities	$	3,949,965			$	—		$	3,884,723		$	65,242
	Derivative assets	5,237				—			5,237			—
	Total assets carried at fair value	$	3,955,202			$	—		$	3,889,960		$	65,242
	Liabilities:
	Derivative liabilities	$	23,974			$	21,139		$	2,835		$	—
	Total liabilities carried at fair value	$	23,974			$	21,139		$	2,835		$	—
		December 31, 2013
		Fair Value				Level 1 - Unadjusted Quoted Prices in Active Markets			Level 2 - Observable Inputs			Level 3 - Unobservable Inputs
	Assets:
	Mortgage-backed securities	$	4,018,161			$	—		$	3,944,681		$	73,480
	Derivative assets	18,488				—			18,488			—
	Total assets carried at fair value	$	4,036,649			$	—		$	3,963,169		$	73,480
	Liabilities:
	Derivative liabilities	$	6,681			$	5,345		$	1,336		$	—
	Total liabilities carried at fair value	$	6,681			$	5,345		$	1,336		$	—
Fair Value Inputs, Assets, Quantitative Information [Table Text Block]	'
	The table below presents information about the significant unobservable inputs used in the fair value measurement for the Company's Level 3 non-Agency CMBS and RMBS as of June 30, 2014:
		Quantitative Information about Level 3 Fair Value Measurements (1)
		Prepayment Speed		Default Rate			Severity		Discount Rate
	Non-Agency CMBS	20 CPY		2.5	%		35	%	8.9	%
	Non-Agency RMBS	10 CPR		1	%		20	%	6.8	%
	-1	Data presented are weighted averages.
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block]	'
	The following table presents the activity of the instruments fair valued at Level 3 during the three and six months ended June 30, 2014:
		Level 3 Fair Values
		Three Months Ended										Six Months Ended
		June 30, 2014										June 30, 2014
		Non-Agency CMBS				Non-Agency RMBS			Total assets			Non-Agency CMBS			Non-Agency RMBS			Total assets
	Balance as of beginning of period	$	63,832			$	2,555		$	66,387		$	70,733		$	2,747		$	73,480
	Unrealized gain (loss) included in OCI	173				3			176			200			(123		)	77
	Principal payments	(1,315		)		(60		)	(1,375		)	(8,308		)	(456		)	(8,764		)
	Accretion	54				—			54			119			330			449
	Balance as of end of period	$	62,744			$	2,498		$	65,242		$	62,744		$	2,498		$	65,242
Recorded basis and fair value [Table Text Block]	'
	The following table presents a summary of the recorded basis and estimated fair values of the Company’s financial instruments as of the dates indicated:
		June 30, 2014							December 31, 2013
		Recorded Basis				Fair Value			Recorded Basis			Fair Value
	Assets:
	Mortgage-backed securities	$	3,949,965			$	3,949,965		$	4,018,161		$	4,018,161
	Mortgage loans held for investment, net (1)	52,564				44,252			55,423			46,383
	Derivative assets	5,237				5,237			18,488			18,488
	Liabilities:
	Repurchase agreements (2)	$	3,447,050			$	3,447,085		$	3,580,754		$	3,580,997
	Non-recourse collateralized financing (1)	12,073				11,603			12,914			12,414
	Derivative liabilities	23,974				23,974			6,681			6,681

Shareholders_Equity_Tables

Shareholders' Equity (Tables)	6 Months Ended
	Jun. 30, 2014
Equity [Abstract]	'
Preferred Stock [Text Block]	'
	The Company has 2,300,000 shares of its 8.50% Series A Cumulative Redeemable Preferred Stock and 2,250,000 shares of its 7.625% Series B Cumulative Redeemable Preferred Stock issued and outstanding as of June 30, 2014 (collectively, the "Preferred Stock"). The Preferred Stock has no maturity and will remain outstanding indefinitely unless redeemed or otherwise repurchased or converted into common stock pursuant to the terms of the Preferred Stock. Except under certain limited circumstances intended to preserve the Company's REIT status, upon the occurrence of a change in control as defined in Article IIIA, Section 7(d) of the Company’s Articles of Incorporation, or to avoid the direct or indirect imposition of a penalty tax in respect of, or to protect the tax status of, any of the Company’s real estate mortgage investment conduits (“REMIC”) interests or a REMIC in which the Company may acquire an interest (as permitted by the Company’s Articles of Incorporation), the Company may not redeem the Series A Preferred Stock prior to July 31, 2017 or the Series B Preferred Stock prior to April 30, 2018. On or after these dates, at any time and from time to time, the Preferred Stock may be redeemed in whole, or in part, at the Company's option at a cash redemption price of $25.00 per share plus any accumulated and unpaid dividends. The Series A Preferred Stock pays a cumulative cash dividend equivalent to 8.50% of the $25.00 liquidation preference per share each year and the Series B Preferred Stock pays a cumulative cash dividend equivalent to 7.625% of the $25.00 liquidation preference per share each year. Because the Preferred Stock is redeemable only at the option of the issuer, it is classified as equity on the Company's consolidated balance sheet.
Schedule of Common Stock Outstanding Roll Forward [Table Text Block]	'
	The following table presents a summary of the changes in the number of common shares outstanding for the periods presented:
		Six Months Ended
		June 30,
		2014		2013
	Balance as of beginning of period	54,310,484		54,268,915
	Common stock issued under DRIP	6,543		505,718
	Common stock issued under ATM program	—		180,986
	Common stock issued or redeemed under stock and incentive plans	471,210		270,158
	Common stock forfeited for tax withholding on share-based compensation	(59,150	)	(52,385	)
	Balance as of end of period	54,729,087		55,173,392
Schedule of Share-based Compensation, Restricted Stock and Restricted Stock Units Activity [Table Text Block]	'
	The following table presents a rollforward of the restricted stock activity for the periods indicated:
		Three Months Ended				Six Months Ended
		June 30,				June 30,
		2014		2013		2014		2013
	Restricted stock outstanding as of beginning of period	760,712		434,163		520,969		448,283
	Restricted stock granted	29,175		115,558		457,538		255,158
	Restricted stock vested	(43,057	)	(22,918	)	(231,677	)	(176,638	)
	Restricted stock outstanding as of end of period	746,830		526,803		746,830		526,803

Net_Income_Per_Common_Share_De

Net Income Per Common Share (Details) (USD $)	3 Months Ended		6 Months Ended
In Thousands, except Share data, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]	'	'	'	'
Net (loss) income	($5,999)	$31,534	($6,733)	$51,136
Preferred Stock Dividends	-2,294	-2,092	-4,588	-3,313
Net (loss) income to common shareholders	-8,293	29,442	-11,321	47,823
Effect of dilutive stock options, income	0	0	0	0
Diluted net (loss) income	($8,293)	$29,442	($11,321)	$47,823
Weighted Average Common Shares	54,711,108	54,973,561	54,668,591	54,638,651
Effect of dilutive stock options, number of shares	0	0	0	0
Diluted, Weighted Average Number Common Shares	54,711,108	54,973,561	54,668,591	54,638,651
Net (loss) income per common share - basic and diluted	($0.15)	$0.54	($0.21)	$0.88

Mortgage_Backed_Securities_Mor2

Mortgage Backed Securities Mortgage backed securities designated as AFS (Details) (USD $)	6 Months Ended	12 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013
Schedule of Available-for-sale Securities [Line Items]	'	'
Available-for-sale MBS, Par Balance	$3,074,848	$3,254,946
Available-for-sale MBS, Unamortized Premium (Discount)	836,884	758,950
Available-for-sale MBS, Amortized Cost	3,911,732	4,013,896
Available-for-sale MBS, Gross Unrealized Gain	72,329	45,114
Available-for-sale MBS, Gross Unrealized Loss	-34,096	-69,566
Available-for-sale MBS, Fair Value	3,949,965	3,989,444
Agency MBS [Member]	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Available-for-sale MBS, Par Balance	2,670,034	2,865,398
Available-for-sale MBS, Unamortized Premium (Discount)	585,108	627,047
Available-for-sale MBS, Amortized Cost	3,255,142	3,492,445
Available-for-sale MBS, Gross Unrealized Gain	38,604	26,792
Available-for-sale MBS, Gross Unrealized Loss	-33,509	-63,976
Available-for-sale MBS, Fair Value	3,260,237	3,455,261
Agency MBS [Member] | Residential Mortgage Backed Securities [Member]	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Available-for-sale MBS, Par Balance	2,360,799	2,591,568
Available-for-sale MBS, Unamortized Premium (Discount)	132,342	154,220
Available-for-sale MBS, Amortized Cost	2,493,141	2,745,788
Available-for-sale MBS, Gross Unrealized Gain	7,657	6,104
Available-for-sale MBS, Gross Unrealized Loss	-33,257	-59,742
Available-for-sale MBS, Fair Value	2,467,541	2,692,150
Available-for-sale MBS, Weighted Average Coupon	3.16%	3.22%
Agency MBS [Member] | Commercial Mortgage Backed Securities [Member]	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Available-for-sale MBS, Par Balance	309,235	273,830
Available-for-sale MBS, Unamortized Premium (Discount)	20,178	19,061
Available-for-sale MBS, Amortized Cost	329,413	292,891
Available-for-sale MBS, Gross Unrealized Gain	15,892	10,793
Available-for-sale MBS, Gross Unrealized Loss	-109	-900
Available-for-sale MBS, Fair Value	345,196	302,784
Available-for-sale MBS, Weighted Average Coupon	5.23%	5.07%
Agency MBS [Member] | CMBS IO [Member]	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Available-for-sale MBS, Par Balance	0	0
Available-for-sale MBS, Unamortized Premium (Discount)	432,588	453,766
Available-for-sale MBS, Amortized Cost	432,588	453,766
Available-for-sale MBS, Gross Unrealized Gain	15,055	9,895
Available-for-sale MBS, Gross Unrealized Loss	-143	-3,334
Available-for-sale MBS, Fair Value	447,500	460,327
Available-for-sale MBS, Weighted Average Coupon	0.88%	0.83%
Notional balance for interest only securities	9,703,887	10,160,502
Non-Agency MBS [Member]	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Available-for-sale MBS, Par Balance	404,814	389,548
Available-for-sale MBS, Unamortized Premium (Discount)	251,776	131,903
Available-for-sale MBS, Amortized Cost	656,590	521,451
Available-for-sale MBS, Gross Unrealized Gain	33,725	18,322
Available-for-sale MBS, Gross Unrealized Loss	-587	-5,590
Available-for-sale MBS, Fair Value	689,728	534,183
Non-Agency MBS [Member] | Residential Mortgage Backed Securities [Member]	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Available-for-sale MBS, Par Balance	13,482	13,845
Available-for-sale MBS, Unamortized Premium (Discount)	-6	-338
Available-for-sale MBS, Amortized Cost	13,476	13,507
Available-for-sale MBS, Gross Unrealized Gain	198	338
Available-for-sale MBS, Gross Unrealized Loss	81	-80
Available-for-sale MBS, Fair Value	13,593	13,765
Available-for-sale MBS, Weighted Average Coupon	4.48%	4.61%
Non-Agency MBS [Member] | Commercial Mortgage Backed Securities [Member]	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Available-for-sale MBS, Par Balance	391,332	375,703
Available-for-sale MBS, Unamortized Premium (Discount)	-17,190	-18,277
Available-for-sale MBS, Amortized Cost	374,142	357,426
Available-for-sale MBS, Gross Unrealized Gain	27,166	15,366
Available-for-sale MBS, Gross Unrealized Loss	0	-3,511
Available-for-sale MBS, Fair Value	401,308	369,281
Available-for-sale MBS, Weighted Average Coupon	4.96%	5.10%
Non-Agency MBS [Member] | CMBS IO [Member]	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Available-for-sale MBS, Par Balance	0	0
Available-for-sale MBS, Unamortized Premium (Discount)	268,972	150,518
Available-for-sale MBS, Amortized Cost	268,972	150,518
Available-for-sale MBS, Gross Unrealized Gain	6,361	2,618
Available-for-sale MBS, Gross Unrealized Loss	506	-1,999
Available-for-sale MBS, Fair Value	274,827	151,137
Available-for-sale MBS, Weighted Average Coupon	0.70%	0.66%
Notional balance for interest only securities	6,958,238	4,274,957
Agency MBS [Member]	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Available-for-sale MBS, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	95,177	1,912,937
Available-for-sale MBS, Continuous Unrealized Loss Position, Less than 12 Months, Gross Unrealized Losses	-741	-43,543
Available-for-sale MBS, Number of Securities in Continuous Unrealized Loss Position for Less than One Year	18	150
Available-for-sale MBS, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	1,905,306	670,402
Available-for-sale MBS, Continuous Unrealized Loss Position, 12 Months or Longer, Gross Unrealized Losses	-32,768	-20,433
Available-for-sale MBS, Number of Securities in Continuous Unrealized Loss Position for Greater than or Equal to One Year	151	67
Non-Agency MBS [Member]	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Available-for-sale MBS, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	11,711	162,558
Available-for-sale MBS, Continuous Unrealized Loss Position, Less than 12 Months, Gross Unrealized Losses	-73	-5,435
Available-for-sale MBS, Number of Securities in Continuous Unrealized Loss Position for Less than One Year	2	39
Available-for-sale MBS, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	27,008	6,310
Available-for-sale MBS, Continuous Unrealized Loss Position, 12 Months or Longer, Gross Unrealized Losses	($514)	($155)
Available-for-sale MBS, Number of Securities in Continuous Unrealized Loss Position for Greater than or Equal to One Year	8	6

Mortgage_Backed_Securities_Mor3

Mortgage Backed Securities Mortgage backed securities designated as Trading (Details) (USD $)	Dec. 31, 2013
In Thousands, unless otherwise specified
Schedule of Trading Securities and Other Trading Assets [Line Items]	'
MBS designated as trading, amortized cost	$26,920
MBS designated as trading, fair value	$28,717

Repurchase_Agreements_Details

Repurchase Agreements (Details) (USD $)	6 Months Ended	12 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013
Assets and Associated Liabilities of Transfers Accounted for as Secured Borrowings [Line Items]	'	'
Repurchase Agreements Accounted for as Secured Borrowings	$3,447,050	$3,580,754
Repurchage agreement, Weighted Average Interest Rate	0.54%	0.61%
Fair Value of Collateral Pledged	3,783,581	3,890,066
Deferred Costs	-35	-243
Repurchase Agreement Counterparty, Weighted Average Maturity of Agreements	'70 days	'114 days
Collateralized Mortgage Obligations [Member]	'	'
Assets and Associated Liabilities of Transfers Accounted for as Secured Borrowings [Line Items]	'	'
Repurchase Agreements Accounted for as Secured Borrowings	15,576	20,651
Repurchage agreement, Weighted Average Interest Rate	1.50%	1.59%
Fair Value of Collateral Pledged	17,775	19,686
Residential Mortgage Backed Securities [Member] | Agency MBS [Member]	'	'
Assets and Associated Liabilities of Transfers Accounted for as Secured Borrowings [Line Items]	'	'
Repurchase Agreements Accounted for as Secured Borrowings	2,242,441	2,522,503
Repurchage agreement, Weighted Average Interest Rate	0.33%	0.42%
Fair Value of Collateral Pledged	2,332,716	2,598,158
Residential Mortgage Backed Securities [Member] | Non-Agency MBS [Member]	'	'
Assets and Associated Liabilities of Transfers Accounted for as Secured Borrowings [Line Items]	'	'
Repurchase Agreements Accounted for as Secured Borrowings	10,279	10,569
Repurchage agreement, Weighted Average Interest Rate	1.65%	1.80%
Fair Value of Collateral Pledged	12,735	12,746
Commercial Mortgage Backed Securities [Member] | Agency MBS [Member]	'	'
Assets and Associated Liabilities of Transfers Accounted for as Secured Borrowings [Line Items]	'	'
Repurchase Agreements Accounted for as Secured Borrowings	262,822	246,849
Repurchage agreement, Weighted Average Interest Rate	0.35%	0.39%
Fair Value of Collateral Pledged	316,139	306,318
Commercial Mortgage Backed Securities [Member] | Non-Agency MBS [Member]	'	'
Assets and Associated Liabilities of Transfers Accounted for as Secured Borrowings [Line Items]	'	'
Repurchase Agreements Accounted for as Secured Borrowings	321,769	303,674
Repurchage agreement, Weighted Average Interest Rate	1.18%	1.27%
Fair Value of Collateral Pledged	391,437	367,859
CMBS IO [Member] | Agency MBS [Member]	'	'
Assets and Associated Liabilities of Transfers Accounted for as Secured Borrowings [Line Items]	'	'
Repurchase Agreements Accounted for as Secured Borrowings	377,554	369,948
Repurchage agreement, Weighted Average Interest Rate	0.97%	1.16%
Fair Value of Collateral Pledged	447,501	449,072
CMBS IO [Member] | Non-Agency MBS [Member]	'	'
Assets and Associated Liabilities of Transfers Accounted for as Secured Borrowings [Line Items]	'	'
Repurchase Agreements Accounted for as Secured Borrowings	216,644	106,803
Repurchage agreement, Weighted Average Interest Rate	1.10%	1.27%
Fair Value of Collateral Pledged	$265,278	$136,227

Repurchase_Agreements_Repurcha1

Repurchase Agreements Repurchase Agreements, Term to Original Maturity (Details) (USD $)	Jun. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Assets and Associated Liabilities of Transfers Accounted for as Secured Borrowings [Line Items]	'	'
Transfers Accounted for as Secured Borrowings, Associated Liabilities, Carrying Amount	$3,447,050	$3,580,754
Deferred Finance Costs, Noncurrent, Net	35	243
Maturity up to 30 days [Member]	'	'
Assets and Associated Liabilities of Transfers Accounted for as Secured Borrowings [Line Items]	'	'
Transfers Accounted for as Secured Borrowings, Associated Liabilities, Carrying Amount	362,588	206,112
Maturity 31 to 60 days [Member]	'	'
Assets and Associated Liabilities of Transfers Accounted for as Secured Borrowings [Line Items]	'	'
Transfers Accounted for as Secured Borrowings, Associated Liabilities, Carrying Amount	797,617	492,145
Matuity 61 to 90 days [Member]	'	'
Assets and Associated Liabilities of Transfers Accounted for as Secured Borrowings [Line Items]	'	'
Transfers Accounted for as Secured Borrowings, Associated Liabilities, Carrying Amount	1,208,340	665,020
Maturity 91 to 120 days [Member]	'	'
Assets and Associated Liabilities of Transfers Accounted for as Secured Borrowings [Line Items]	'	'
Transfers Accounted for as Secured Borrowings, Associated Liabilities, Carrying Amount	921,603	783,371
Maturity 121 to 190 days [Member]	'	'
Assets and Associated Liabilities of Transfers Accounted for as Secured Borrowings [Line Items]	'	'
Transfers Accounted for as Secured Borrowings, Associated Liabilities, Carrying Amount	$156,937	$1,434,349

Repurchase_Agreements_Repurcha2

Repurchase Agreements Repurchase Agreements, Counterparty Information (Details) (USD $)	Jun. 30, 2014
In Thousands, unless otherwise specified	Agreements
Counterparty Information [Line Items]	'
Line of Credit Facility, Amount Outstanding	$27,888
Line of Credit Facility, Maximum Borrowing Capacity	$250,000
Line of Credit Facility, Interest Rate at Period End	1.46%
Number of Counterparties with Borrowings Outstanding	23
Available Repurchase Agreement Counterparties	32

Derivatives_Details

Derivatives (Details) (USD $)	3 Months Ended		6 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013	Dec. 31, 2013
Derivative [Line Items]	'	'	'	'	'
Derivative liabilities, fair value	($23,974)	'	($23,974)	'	($6,681)
Gain (loss) on derivative instruments, net	-23,074	11,353	-36,496	11,336	'
Not Designated as Hedging Instrument [Member]	'	'	'	'	'
Derivative [Line Items]	'	'	'	'	'
Derivative liabilities, aggregate notional amount	11,810,000	'	11,810,000	'	9,215,000
Interest Rate Swap [Member]	'	'	'	'	'
Derivative [Line Items]	'	'	'	'	'
Derivative assets, fair value	5,237	'	5,237	'	18,488
Derivative liabilities, fair value	-2,835	'	-2,835	'	-1,336
Notional amount of derivative instruments added	'	'	75,000	'	'
Derivatives, notional amount	700,000	'	700,000	'	'
Weighted-average Fixed Rate Swapped	1.57%	'	1.57%	'	'
Gain (loss) on derivative instruments, net	-11,694	11,353	-20,702	11,336	'
Interest Rate Swap [Member] | Not Designated as Hedging Instrument [Member]	'	'	'	'	'
Derivative [Line Items]	'	'	'	'	'
Derivative assets, aggregate notional amount	290,000	'	290,000	'	575,000
Derivative liabilities, aggregate notional amount	410,000	'	410,000	'	215,000
Interest Rate Swap [Member] | Interest Rate Swap Agreements, Maturities in Next 37-48 Months [Member]	'	'	'	'	'
Derivative [Line Items]	'	'	'	'	'
Derivatives, notional amount	185,000	'	185,000	'	'
Weighted-average Fixed Rate Swapped	0.92%	'	0.92%	'	'
Interest Rate Swap [Member] | Interest Rate Swap Agreements, Maturities in Next 49-60 Months [Member]	'	'	'	'	'
Derivative [Line Items]	'	'	'	'	'
Derivatives, notional amount	235,000	'	235,000	'	'
Weighted-average Fixed Rate Swapped	1.45%	'	1.45%	'	'
Interest Rate Swap [Member] | Interest Rate Swap Agreements, Maturities in Next 61-72 Months [Member]	'	'	'	'	'
Derivative [Line Items]	'	'	'	'	'
Derivatives, notional amount	25,000	'	25,000	'	'
Weighted-average Fixed Rate Swapped	1.61%	'	1.61%	'	'
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 Rate Swapped	2.24%	'	2.24%	'	'
Interest Rate Swap [Member] | Interest Rate Swap Agreements, Maturities in Next 85-108 Months [Member]	'	'	'	'	'
Derivative [Line Items]	'	'	'	'	'
Derivatives, notional amount	30,000	'	30,000	'	'
Weighted-average Fixed Rate Swapped	1.93%	'	1.93%	'	'
Interest Rate Swap [Member] | Interest Rate Swap Agreements, Maturities in Next 109-127 Months [Member]	'	'	'	'	'
Derivative [Line Items]	'	'	'	'	'
Derivatives, notional amount	150,000	'	150,000	'	'
Weighted-average Fixed Rate Swapped	2.17%	'	2.17%	'	'
Eurodollar Future [Member]	'	'	'	'	'
Derivative [Line Items]	'	'	'	'	'
Derivative liabilities, fair value	-21,139	'	-21,139	'	-5,345
Notional amount of derivative instruments added	'	'	2,400,000	'	'
Gain (loss) on derivative instruments, net	-11,380	0	-15,794	0	'
Eurodollar Future [Member] | Not Designated as Hedging Instrument [Member]	'	'	'	'	'
Derivative [Line Items]	'	'	'	'	'
Derivative liabilities, aggregate notional amount	11,400,000	'	11,400,000	'	9,000,000
Interest Rate Swap [Member]	'	'	'	'	'
Derivative [Line Items]	'	'	'	'	'
Notional amount of derivative instruments terminated	'	'	($165,000)	'	'

Derivatives_Derivative_Effect_

Derivatives Derivative Effect on Accumulated Other Comprehensive Income (Details) (USD $)	3 Months Ended		6 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Derivative [Line Items]	'	'	'	'
Accumulated Other Comprehensive Income (Loss), Cumulative Changes in Net Gain (Loss) from Cash Flow Hedges, Effect Net of Tax	$5,468	'	$5,468	'
Cash Flow Hedge Gain (Loss) to be Reclassified within Twelve Months	'	'	4,756	'
Dedesignated cash flow hedge amortization	1,608	'	3,896	'
Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net	'	$4,693	'	$8,796

Offsetting_Assets_and_Liabilit2

Offsetting Assets and Liabilities Offsetting Assets (Details) (USD $)	Jun. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Offsetting Assets [Line Items]	'	'
Derivative assets, fair value, gross asset	$5,237	$18,488
Derivative assets, fair value, gross liability	0	0
Derivative assets, fair value, amount not offset against collateral	5,237	18,488
Derivative assets, Collateral, Obligation to Return Securities	-1,039	-193
Derivative assets, Collateral, Obligation to Return Cash	-3,170	-12,141
Derivative assets, fair value, amount offset against collateral	$1,028	$6,154

Offsetting_Assets_and_Liabilit3

Offsetting Assets and Liabilities Offsettting Liabilities (Details) (USD $)	Jun. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Offsetting Liabilities [Line Items]	'	'
Derivative liabilities, fair value, gross liability	$23,974	$6,681
Derivative liabilities, fair value, gross amount offset in balance sheet	0	0
Derivative liabilities, fair value, amount not offset against collateral	23,974	6,681
Derivative, Collateral, Right to Reclaim Securities	-1,495	-1,299
Derivative, Collateral, Right to Reclaim Cash	-22,479	-5,382
Derivative liabilities, fair value, amount offset against collateral	0	0
Repurchase agreements, gross liability	3,447,050	3,580,754
Repurchase agreements, gross amount offset in balance sheet	0	0
Repurchase agreements, amount not offset against collateral	3,447,050	3,580,754
Repurchase agreements, Collateral, Right to Reclaim Securities	-3,447,050	-3,580,754
Repurchase agreements, Collateral, Right to Reclaim Cash	0	0
Repurchase agreements, amount offset against collateral	0	0
Total gross liabilities	3,471,024	3,587,435
Total gross liabilities, gross amount offset in balance sheet	0	0
Total liabilities, amount not offset against collateral	3,471,024	3,587,435
Total liabilities, Collateral, Right to Reclaim Securities	-3,448,545	-3,582,053
Total liabilities, Collateral, Right to Reclaim Cash	-22,479	-5,382
Total liabilities, amount offset against collateral	$0	$0

Fair_Value_of_Financial_Instru2

Fair Value of Financial Instruments Fair Value on a Recurring Basis (Details) (USD $)	Jun. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Mortgage-backed securities	$3,949,965	$4,018,161
Derivative assets	5,237	18,488
Derivative Liabilities	23,974	6,681
Fair Value, Measurements, Recurring [Member] | Estimate of Fair Value, Fair Value Disclosure [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Mortgage-backed securities	3,949,965	4,018,161
Derivative assets	5,237	18,488
Total assets carried at fair value	3,955,202	4,036,649
Derivative Liabilities	23,974	6,681
Total liabilities carried at fair value	23,974	6,681
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Mortgage-backed securities	0	0
Derivative assets	0	0
Total assets carried at fair value	0	0
Derivative Liabilities	21,139	5,345
Total liabilities carried at fair value	21,139	5,345
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Mortgage-backed securities	3,884,723	3,944,681
Derivative assets	5,237	18,488
Total assets carried at fair value	3,889,960	3,963,169
Derivative Liabilities	2,835	1,336
Total liabilities carried at fair value	2,835	1,336
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Mortgage-backed securities	65,242	73,480
Derivative assets	0	0
Total assets carried at fair value	65,242	73,480
Derivative Liabilities	0	0
Total liabilities carried at fair value	$0	$0

Fair_Value_of_Financial_Instru3

Fair Value of Financial Instruments Significant Unobservable Inputs Level 3 (Details) (Fair Value, Measurements, Recurring [Member], Fair Value, Inputs, Level 3 [Member])	3 Months Ended
	Jun. 30, 2014
Commercial Mortgage Backed Securities [Member]	'
Fair Value Inputs, Quantitative Information [Abstract]	'
Fair Value Inputs, Prepayment Rate	20.00%
Fair Value Inputs, Probability of Default	2.50%
Fair Value Inputs, Loss Severity	35.00%
Fair Value Inputs, Discount Rate	8.90%
Residential Mortgage Backed Securities [Member]	'
Fair Value Inputs, Quantitative Information [Abstract]	'
Fair Value Inputs, Prepayment Rate	10.00%
Fair Value Inputs, Probability of Default	1.00%
Fair Value Inputs, Loss Severity	20.00%
Fair Value Inputs, Discount Rate	6.80%

Fair_Value_of_Financial_Instru4

Fair Value of Financial Instruments Level 3 (Details) (Fair Value, Measurements, Recurring [Member], Fair Value, Inputs, Level 3 [Member], USD $)	6 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2014
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]	'
Balance at the beginning of the period	$73,480
Unrealized (loss) gain included in OCI	77
Principal payments	-8,764
Accretion	449
Balance at the end of the period	65,242
Non-Agency CMBS [Member]	'
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]	'
Balance at the beginning of the period	70,733
Unrealized (loss) gain included in OCI	200
Principal payments	-8,308
Accretion	119
Balance at the end of the period	62,744
Non-Agency RMBS [Member]	'
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]	'
Balance at the beginning of the period	2,747
Unrealized (loss) gain included in OCI	-123
Principal payments	-456
Accretion	330
Balance at the end of the period	$2,498

Fair_Value_of_Financial_Instru5

Fair Value of Financial Instruments Recorded basis and Fair Value (Details) (USD $)	Jun. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Derivative assets	$5,237	$18,488
Derivative Liabilities, Fair Value Disclosure	23,974	6,681
Carrying (Reported) Amount, Fair Value Disclosure [Member] | Fair Value, Measurements, Recurring [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Mortgage-backed securities, Fair Value Disclosure	3,949,965	4,018,161
Mortgage loans held for investment, net, Fair Value Disclosure	52,564	55,423
Derivative assets	5,237	18,488
Repurchase Agreements, Fair Value Disclosure	3,447,050	3,580,754
Non-recourse collateralized financing, Fair Value Disclosure	12,073	12,914
Derivative Liabilities, Fair Value Disclosure	23,974	6,681
Estimate of Fair Value, Fair Value Disclosure [Member] | Fair Value, Measurements, Recurring [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Mortgage-backed securities, Fair Value Disclosure	3,949,965	4,018,161
Mortgage loans held for investment, net, Fair Value Disclosure	44,252	46,383
Derivative assets	5,237	18,488
Repurchase Agreements, Fair Value Disclosure	3,447,085	3,580,997
Non-recourse collateralized financing, Fair Value Disclosure	11,603	12,414
Derivative Liabilities, Fair Value Disclosure	$23,974	$6,681

Shareholders_Equity_Details

Shareholders' Equity (Details) (USD $)	3 Months Ended		6 Months Ended						6 Months Ended
In Thousands, except Share data, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Dec. 31, 2013	Jun. 30, 2014	Dec. 31, 2013	Jun. 30, 2014
					At the market progam [Member]	At the market progam [Member]	Series A Preferred Stock [Member]	Series A Preferred Stock [Member]	Series B Preferred Stock [Member]	Series B Preferred Stock [Member]	Common Stock [Member]
											At the market progam [Member]
Class of Stock [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Preferred Stock, Dividend Rate, Percentage	'	'	'	'	'	'	8.50%	'	7.63%	'	'
Preferred Stock, Liquidation Preference Per Share	$25	'	$25	'	'	'	'	'	'	'	'
Preferred Stock, Shares Issued	'	'	'	'	'	'	2,300,000	2,300,000	2,250,000	2,250,000	'
Shareholders' Equity, Common Stock [Roll Forward]	'	'	'	'	'	'	'	'	'	'	'
Balance as of beginning of period	'	'	54,310,484	54,268,915	'	'	'	'	'	'	'
Common stock issued under DRIP	'	'	6,543	505,718	'	'	'	'	'	'	'
Common stock issued under ATM program	'	'	'	'	0	180,986	'	'	'	'	'
Common stock issued or redeemed under stock and incentive Plans	'	'	471,210	270,158	'	'	'	'	'	'	'
Common stock forfeited for tax withholding on share-based compensation	'	'	-59,150	-52,385	'	'	'	'	'	'	'
Balance as of end of period	54,729,087	55,173,392	54,729,087	55,173,392	'	'	'	'	'	'	'
Dividend reinvestment plan, shares authorized	3,000,000	'	3,000,000	'	'	'	'	'	'	'	'
Stock issued during period, remaining shares available, dividend reinvestment plan	2,460,355	'	2,460,355	'	'	'	'	'	'	'	'
Dividends declared per common share	$0.25	$0.29	$0.50	$0.58	'	'	'	'	'	'	'
ATM program, authorized shares remaining	'	'	'	'	'	'	'	'	'	'	7,416,520
Stock Repurchase Program, Authorized Amount	'	'	$50,000	'	'	'	'	'	'	'	'
Stock Repurchase Program, Remaining Authorized Repurchase Amount	'	'	$42	'	'	'	'	'	'	'	'

Shareholders_Equity_Sharebased

Shareholders' Equity Share-based Compensation (Details) (USD $)	3 Months Ended		6 Months Ended
In Thousands, except Share data, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'	'
Share-based incentive plan, number of shares authorized for issuance	2,500,000	'	2,500,000	'
Share-based incentive plan, number of shares remaining for issuance	1,078,908	'	1,078,908	'
Total share-based compensation expense	$683	$625	$1,355	$1,115
Restricted Stock [Member]	'	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'	'
Nonvested restricted stock, fair value remaining to be amortized	5,659	'	5,659	'
Grant date fair value	250	1,217	3,703	2,708
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options	'	'	'	'
Restricted stock outstanding as of beginning of the period	760,712	434,163	520,969	448,283
Restricted stock granted during the period	29,175	115,558	457,538	255,158
Restricted stock vested during the period	-43,057	-22,918	-231,677	-176,638
Restricted stock outstanding as of end of the period	746,830	526,803	746,830	526,803
Restricted Stock [Member] | Up to one year [Member]	'	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'	'
Nonvested restricted stock, fair value remaining to be amortized	1,364	'	1,364	'
Restricted Stock [Member] | Two to three years [Member]	'	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'	'
Nonvested restricted stock, fair value remaining to be amortized	2,265	'	2,265	'
Restricted Stock [Member] | Three to four years [Member]	'	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'	'
Nonvested restricted stock, fair value remaining to be amortized	1,453	'	1,453	'
Restricted Stock [Member] | Four to five years [Member]	'	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'	'
Nonvested restricted stock, fair value remaining to be amortized	541	'	541	'
Restricted Stock [Member] | Five years or more [Member]	'	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'	'
Nonvested restricted stock, fair value remaining to be amortized	$36	'	$36	'