Related Party Transactions (Notes)	12 Months Ended
Dec. 31, 2017
Related Party Transactions [Abstract]
Related Party Transactions Disclosure [Text Block]	RELATED PARTY TRANSACTIONS As noted in previous filings, DCI Commercial, Inc. (“DCI”), a former affiliate of the Company and formerly known as Dynex Commercial, Inc., was named a party to several lawsuits in 1999 and 2000 regarding the activities of DCI while it was an operating subsidiary of an affiliate of the Company. The Company was named a party to several of the lawsuits (the “DCI Litigation”) due to its affiliation with DCI. In December 2000, the Company and DCI entered into a Litigation Cost Sharing Agreement whereby the Company agreed to advance DCI's portion of the costs of defending against the DCI Litigation. The DCI Litigation concluded in 2004 and, after various appeals by the plaintiffs in the DCI Litigation (the “DCI Plaintiffs”), no judgment or damages were entered against the Company, but final judgment was entered in the DCI Litigation against DCI (the “DCI Judgment”). The DCI Plaintiffs have attempted to enforce the DCI Judgment against the Company through a separate action which is discussed in Item 3 of Part I of this Annual Report on Form 10-K. The Litigation Cost Sharing Agreement remained in effect as of December 31, 2017. DCI costs advanced by the Company are loans and bear simple interest at the rate of Prime plus 8.0% per annum. The Company's advances to cover DCI's costs during the years ended December 31, 2017, 2016, and 2015 were $30, $173, and $228, respectively. The total amount due to the Company under the Litigation Cost Sharing Agreement including interest was $10,615 as of December 31, 2017 compared to $10,240 as of December 31, 2016. Because DCI does not currently have any assets, the amount due as of December 31, 2017 has been fully reserved for collectibility by the Company. DCI is currently wholly owned by a company unaffiliated with the Company. An executive of the Company is the sole shareholder of this unaffiliated company.

RELATED PARTY TRANSACTIONS

As noted in previous filings, DCI Commercial, Inc. (“DCI”), a former affiliate of the Company and formerly known as Dynex Commercial, Inc., was named a party to several lawsuits in 1999 and 2000 regarding the activities of DCI while it was an operating subsidiary of an affiliate of the Company. The Company was named a party to several of the lawsuits (the “DCI Litigation”) due to its affiliation with DCI. In December 2000, the Company and DCI entered into a Litigation Cost Sharing Agreement whereby the Company agreed to advance DCI's portion of the costs of defending against the DCI Litigation. The DCI Litigation concluded in 2004 and, after various appeals by the plaintiffs in the DCI Litigation (the “DCI Plaintiffs”), no judgment or damages were entered against the Company, but final judgment was entered in the DCI Litigation against DCI (the “DCI Judgment”). The DCI Plaintiffs have attempted to enforce the DCI Judgment against the Company through a separate action which is discussed in Item 3 of Part I of this Annual Report on Form 10-K.

The Litigation Cost Sharing Agreement remained in effect as of December 31, 2017. DCI costs advanced by the Company are loans and bear simple interest at the rate of Prime plus 8.0% per annum. The Company's advances to cover DCI's costs during the years ended December 31, 2017, 2016, and 2015 were $30, $173, and $228, respectively. The total amount due to the Company under the Litigation Cost Sharing Agreement including interest was $10,615 as of December 31, 2017 compared to $10,240 as of December 31, 2016. Because DCI does not currently have any assets, the amount due as of December 31, 2017 has been fully reserved for collectibility by the Company. DCI is currently wholly owned by a company unaffiliated with the Company. An executive of the Company is the sole shareholder of this unaffiliated company.