Commitment and Contingencies	3 Months Ended
	Mar. 31, 2021
Commitments and Contingencies Disclosure [Abstract]
Contingencies Disclosure	As previously disclosed in the 2020 Form 10-K, the receiver (the “Receiver”) for one of the plaintiffs awarded damages in a judgment (the "DCI Judgment") against Dynex Commercial, Inc. ("DCI"), a subsidiary of a former affiliate of the Company, filed a separate claim in May 2018 against the Company seeking payment of the damages awarded in connection with the DCI Judgment, alleging that the Company breached a litigation cost sharing agreement, as amended (the "Agreement"), that was initially entered into by the Company and DCI in December 2000. On November 21, 2019, the U.S. District Court, Northern District of Texas ("Northern District Court") granted in part and denied in part summary judgment on the Receiver’s claim and the Company’s claim for offset and recoupment. The Northern District Court found that the Company breached the Agreement and therefore must pay damages to the Receiver. The Northern District Court simultaneously granted the Company’s motion for summary judgment finding that DCI also breached the Agreement and that the Company can recover amounts due to it from DCI under the Agreement. The Receiver subsequently filed a claim for damages with the Northern District Court of approximately $12,600, while the Company filed claims for damages ranging from $13,300 to $30,600, including interest. The Receiver filed objections (the "Objections") with the Northern District Court to, among other things, the Company recovering amounts incurred prior to entry into the Agreement and amounts incurred under the Agreement after January 31, 2006, including interest, which is the date that DCI’s corporate existence ceased under Virginia law. The Company has disputed the Receiver’s Objections, arguing, among other things, that the Receiver's Objections are not supportable under Virginia law and has further refined its damages claim to range from $15,961 based on simple interest to $22,752 based on a combination of simple and compound interest, which the Company believes is supportable under Virginia law. There have been no material developments in this matter during the three months ended March 31, 2021. After consultation with litigation counsel, the Company believes, based upon information currently available and its evaluation of Virginia law, that the likelihood of loss is not probable, and given the range of potential claims for damages by the Company to offset the Receiver's claims, the amount of possible loss cannot be reasonably estimated, and therefore, no contingent liability has been recorded.