|3 Months Ended|
Mar. 31, 2019
|Income Tax Disclosure [Abstract]|
We are subject to U.S. federal, state and international income taxes. We are generally no longer subject to federal, state, or international income tax examinations by tax authorities for years before 2015 with few exceptions. Due to the potential for resolution of state and foreign examinations, and the expiration of various statutes of limitations, it is reasonably possible that our gross unrecognized tax benefit balance may change within the next twelve months by a range of $0 to $5.3 million.
Effective Tax Rate
Our effective income tax rate is 13.7% for the first quarter of 2019 compared to 23.9% for the first quarter of 2018. Our effective tax rate was lower during the first quarter of 2019 as compared to 2018 due to permanent tax differences resulting from the accrual for losses associated with certain legal proceedings and investigations related to the 2017 cybersecurity incident. We computed income taxes for the first quarter of 2019 using the discrete method, applying the actual year-to-date effective tax rate to our pre-tax loss. We believe that this method yields a more reliable income tax calculation for the period due to the uncertainty associated with the estimate of our annual domestic pre-tax book income due to the ongoing litigation, claims, and government investigations related to the 2017 cybersecurity incident.
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.
Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef