Susan L. Main
recorded to interest expense, and $6.0 million was recorded as other expense or approximately $0.42 a share.
Turning to our outlook, management currently believe the GAAP earnings per share in the second quarter of 2018 will be in the range of $1.85 to $1.90 per share. And the full-year 2018, our GAAP earnings per share outlook is $7.67 to $7.77 compared to our prior outlook of $7.51 to $7.61. The 2018 full year estimated tax rate is 21.4%, before discrete items, which we -- are currently expected to be lower in 2018 than in prior period.
I will now pass the call back to Robert.
Thank you, Sue. We would like now to take your questions. Jason, if you're ready to proceed with the questions and answers, please go ahead.