Basis of Presentation	3 Months Ended
Mar. 31, 2017
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Basis of Presentation	1. BASIS OF PRESENTATION The accompanying unaudited condensed consolidated financial statements for Uranium Resources, Inc. (the “Company,” “we,” “us,” or “URI”) have been prepared in accordance with accounting principles generally accepted in the United States of America (“U.S. GAAP”) for interim financial information and with the instructions to Form 10-Q and Rule 8-03 of Regulation S-X. Accordingly, they do not include all of the information and footnotes required by U.S. GAAP for complete financial statements. The accompanying statements should be read in conjunction with the audited financial statements included in Uranium Resources, Inc.’s 2016 Annual Report on Form 10-K. In the opinion of management, all adjustments (which are of a normal, recurring nature) considered necessary for a fair presentation have been included. Operating results for the three months ended March 31, 2017 are not necessarily indicative of the results that may be expected for any other period including the full year ending December 31, 2017. *Recently Issued Accounting Pronouncements* In January 2017, the FASB issued Accounting Standards Update No. 2017-01 (ASU 2017-01), Business Combinations: Clarifying the Definition of a Business, which clarifies the definition of a business when determining whether a company has acquired or sold a business. The ASU applies to all entities and is effective for annual periods ending after December 15, 2017, and interim periods thereafter, with early adoption permitted under certain circumstances. The Company does not believe that the adoption of this guidance will have a material impact on our financial statements. In November 2016, the FASB issued Accounting Standards Update No. 2016-18, Statement of Cash Flows: Restricted Cash, which will require that a statement of cash flows explain the change during period in the total of cash, cash equivalents and amounts generally described as restricted cash or restricted cash equivalents. As a result, amounts generally described as restricted cash and restricted cash equivalents should be included with cash and cash equivalents when reconciling the beginning-of-period and end-of-period total amounts shown on the statement of cash flows. The ASU applies to all entities and is effective for fiscal years beginning after December 15, 2018 and interim periods within those fiscal years beginning after December 15, 2019, with early adoption permitted. As a result, upon adoption, the Company will include the restricted cash amount in its beginning-of-period and end-of-period reconciliations of cash on its statement of cash flows. For the three months ended March 31, 2017, this would have resulted in the Company including an additional $4.0 million in its beginning-of-period cash balance and an additional $3.9 million in its end-of-period cash balance. The Company also would not have recorded a release of restricted cash of $23,000 in the investing section of its statement of cash flows.

Basis of Presentation

3 Months Ended

Mar. 31, 2017

Organization, Consolidation and Presentation of Financial Statements [Abstract]

1. BASIS OF PRESENTATION

The accompanying unaudited condensed consolidated financial statements for Uranium Resources, Inc. (the “Company,” “we,” “us,” or “URI”) have been prepared in accordance with accounting principles generally accepted in the United States of America (“U.S. GAAP”) for interim financial information and with the instructions to Form 10-Q and Rule 8-03 of Regulation S-X. Accordingly, they do not include all of the information and footnotes required by U.S. GAAP for complete financial statements. The accompanying statements should be read in conjunction with the audited financial statements included in Uranium Resources, Inc.’s 2016 Annual Report on Form 10-K. In the opinion of management, all adjustments (which are of a normal, recurring nature) considered necessary for a fair presentation have been included. Operating results for the three months ended March 31, 2017 are not necessarily indicative of the results that may be expected for any other period including the full year ending December 31, 2017.

Recently Issued Accounting Pronouncements

In January 2017, the FASB issued Accounting Standards Update No. 2017-01 (ASU 2017-01), Business Combinations: Clarifying the Definition of a Business, which clarifies the definition of a business when determining whether a company has acquired or sold a business. The ASU applies to all entities and is effective for annual periods ending after December 15, 2017, and interim periods thereafter, with early adoption permitted under certain circumstances. The Company does not believe that the adoption of this guidance will have a material impact on our financial statements.

In November 2016, the FASB issued Accounting Standards Update No. 2016-18, Statement of Cash Flows: Restricted Cash, which will require that a statement of cash flows explain the change during period in the total of cash, cash equivalents and amounts generally described as restricted cash or restricted cash equivalents. As a result, amounts generally described as restricted cash and restricted cash equivalents should be included with cash and cash equivalents when reconciling the beginning-of-period and end-of-period total amounts shown on the statement of cash flows. The ASU applies to all entities and is effective for fiscal years beginning after December 15, 2018 and interim periods within those fiscal years beginning after December 15, 2019, with early adoption permitted. As a result, upon adoption, the Company will include the restricted cash amount in its beginning-of-period and end-of-period reconciliations of cash on its statement of cash flows. For the three months ended March 31, 2017, this would have resulted in the Company including an additional $4.0 million in its beginning-of-period cash balance and an additional $3.9 million in its end-of-period cash balance. The Company also would not have recorded a release of restricted cash of $23,000 in the investing section of its statement of cash flows.