Mark Hoyt
Analyst · Matthew Galinko from Sidoti
Thanks, Scott. As a reminder, we adopted ASC 606 on January 1, 2018. We included in the press release issued today, a table with a summary of the effect of this new accounting standard on our Q1 results.
Total revenue for the first quarter of 2018 grew 8% year-over-year to $45.4 million. Product and license revenue grew 6% to $33.5 million, and services and other revenue grew 15% to $11.9 million. This quarter, we are providing additional revenue metrics by products and services categories, which can also be found in today's press release.
Software licenses and subscription revenue increased more than 50% to $19 million, driven by strength in our mobile security and e-signature solutions, which included 2 large global banking e-signature contracts.
Maintenance, support and other revenue increased 9% to $8 million. Hardware revenue declined 20% year-over-year to $17.5 million. Let me remind everyone that in the fourth quarter of 2017, we benefited from several million dollars of product that was originally scheduled to ship in Q1. We expect more favorable hardware results for the balance of 2018.
Gross margin for the first quarter of 2018 was 76% as compared to 71% for the first quarter of 2017. The increase in gross margin percentage is primarily attributed to an increase in software and subscription licenses and a decrease in hardware revenue.
Operating expenses for the first quarter of 2018 were $33 million, an increase of 12% from $30 million reported last year and a decrease of 5% from $35 million reported in Q4 2017.
The year-over-year increase of expenses reflects investments to improve our operating infrastructure, along with sales and marketing growth investments.
Adjusted EBITDA or adjusted earnings before interest, taxes, depreciation, amortization and long-term incentive compensation was $6.1 million, an increase from $4.2 million for the first quarter of 2017. Adjusted EBITDA margin was 13.5% as compared to 10.1% for the first quarter of last year.
GAAP diluted earnings per share was $0.04 for the first quarter of 2018, compared to $0.01 for the first quarter of 2017. Non-GAAP diluted earnings per share, which excludes long-term incentive compensation, amortization of purchased intangible assets and the impact of tax adjustments was $0.12 for the first quarter of 2018, compared to $0.08 for the first quarter of last year.
Now moving to the balance sheet. As of March 31, our net cash balance, including short-term investments in commercial paper, was $166 million, an increase of $8 million or 5% from $158 million at the end of last year and an increase of $20 million from the prior-year period.
VASCO has no outstanding long-term debt. Deferred revenue, which includes short-term and long-term components, was $37.2 million as of March 31, 2018, and included a negative impact of $5.5 million from the adoption of ASC 606. Deferred revenue as of December 31, 2017, was $40.3 million.
Our geographic revenue mix continues to shift with increasing contributions from the Americas region. This is largely due to the strong growth we're seeing from our e-signature solutions. For the first quarter of 2018, 35% of our revenue came from the Americas, 40% was from EMEA and 25% from Asia Pac, compared to 29%, 44% and 27%, respectively in the first quarter of 2017. I will now turn the meeting back to Scott.