Income Taxes	3 Months Ended
Income Taxes	Mar. 31, 2021
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes The Company's income tax expense was $30 thousand and $52 thousand for the three months ended March 31, 2021 and 2020, respectively, with effective tax rates of 1.38% and (0.19%), respectively. The Company excludes from the calculation of the effective tax rate any entities that are projected to operate at a loss, have no tax benefit that can reasonably be expected, and those entities which operate in a zero tax rate jurisdiction. Due to continuing operating losses in the United States, the tax provision is based on minimum U.S. state income taxes and the operations of certain foreign affiliates that are subject to taxes in their respective countries. On March 27, 2020, the President of the United States signed into law the Coronavirus Aid, Relief, and Economic Security Act (CARES) providing nearly $2 trillion in economic relief to eligible businesses impacted by the coronavirus outbreak. The Company is currently studying its options under the CARES Act. Tax implications of the CARES Act include expansion of the business interest expense deduction from 30% to 50% for the years 2019 and 2020 and the suspension of the 80% limitation on usage of Net Operating Losses incurred in the years 2018 through 2020. The Company’s net interest expense is subject to limitation under Section 163(j). The limitation serves to reduce the net operating loss and create an additional attribute for the disallowed net interest expense. Therefore, there is no effect on earnings. The foreign entities of the Company are projected to generate an additional operating loss for the year 2021. Therefore, the Company has not made any adjustments related to potential GILTI tax in its financial statements. The Company evaluates the recoverability of its net deferred tax assets based on its history of operating results, its expectations for the future and expiration dates of its attributes including operating losses. The Company has concluded that it is more likely than not it will be unable to realize the net deferred tax assets in the immediate future and has established a valuation allowance for all U.S. and foreign net deferred tax assets. At December 31, 2020, the Company’s U.S. federal net operating loss carryforwards totaled $10.7 million. The Company’s ability to use net operating loss carry forwards is subject to limitation in future periods under certain provisions of Section 382 of the Internal Revenue Code of 1986, as amended, which limit the utilization of net operating losses upon a more than 50% change in ownership of the Company’s stock. The Company examined the application of Section 382 with respect to an ownership change that took place during 2010, as well as the limitation on the application of net operating loss carry forwards. The Company has determined that additional ownership changes occurred on August 19, 2020, October 31, 2020 and December 31, 2020. The Company has determined that the lowest limitation related to the dates of change limits the Company’s usage of net operating losses, other carry forwards and credits as of the change in ownership date to an annual amount of $28 thousand. The Company’s net loss carryforwards may be further limited in the future if additional ownership changes occur. The Company is subject to the provisions of ASC 740-10-25, “Income Taxes” (ASC 740) which prescribes a more likely-than-not threshold for the financial statement recognition of uncertain tax positions. ASC 740 clarifies the accounting for income taxes by prescribing a minimum recognition threshold and measurement attribute for the financial statement recognition and measurement of a tax position taken or expected to be taken in a tax return. On a quarterly basis, the Company undergoes a process to evaluate whether income tax accruals are in accordance with ASC 740 guidance on uncertain tax positions. For federal purposes, post 1998 tax years remain open to examination as a result of net operating loss carryforwards. The Company is currently open to audit by the appropriate state income taxing authorities for tax years 2016 to2020. At December 31, 2020, the Company recorded an unrecognized tax benefit aggregating $2.3 million including penalty and interest of $0.5 million. The Company records penalties and interest as a component of selling, general and administrative expenses in the Consolidated Statement of Operations.

The entire disclosure for income taxes. Disclosures may include net deferred tax liability or asset recognized in an enterprise's statement of financial position, net change during the year in the total valuation allowance, approximate tax effect of each type of temporary difference and carryforward that gives rise to a significant portion of deferred tax liabilities and deferred tax assets, utilization of a tax carryback, and tax uncertainties information.

Teligent, Inc. 10-Q