Thanks, Jon. Flipping to the next 2 slides, nonaccrual investments as a percentage of total debt investments at cost and fair value remained low and decreased to 1.4% and 1%, respectively, as of March 31. During the quarter, the number of nonaccrual investments decreased to 6 portfolio company investments from 7 portfolio company investments as 1 portfolio company investment returned to accrual status.
As Gregory discussed in his opening commentary, as a result of strong portfolio company performance, the percentage of investments rated 3 on our internal performance rating scale decreased to 12% of the portfolio at fair value as of March 31. As a reminder, independent valuation firms value at least 25% of our investments each quarter.
Slides 17 and 18 provide further details on our balance sheet and income statement as of and for the 3 months ended March 31.
Turning to Slide 19, the graph on the top summarizes our quarterly returns on equity over the past 5 years, and the graph on the bottom summarizes our quarterly distributions as well as our special distributions over that same time frame.
Turning to Slide 20, this graph illustrates our long history of strong shareholder returns since our IPO.
Slide 21 summarizes our liquidity and investment capacity as of March 31, which remains strong with over $800 million of capital available through cash, restricted cash and availability in our revolving credit facilities. We also highlight our continued progress during the quarter on optimizing the right-hand side of our balance sheet.
Three key highlights. First, on February 11, we closed on a $475 million revolving credit facility with JPMorgan, which matures on February 11, 2026, and has an interest rate that ranges from 1-month LIBOR plus 1.75% to 1-month LIBOR plus 1.875%. Second, On February 24, we issued $400 million of unsecured notes, which bear a fixed interest rate of 2.5% and mature on August 24, 2026. With the completion of our second unsecured debt issuance, our percentage of unsecured debt as a percentage of total debt increased to 38% as of March 31. And finally, on February 23, we decreased the borrowing capacity under our revolving credit facility with Morgan Stanley to $75 million. After the end of the quarter, we further amended this revolving credit facility to, among other things, extend the reinvestment period through April 12, 2024, extend the maturity date to April 12, 2026, and reduce the interest rate on borrowings to 1-month LIBOR plus 2.05% from 1-month LIBOR plus 2.45%.
Slide 22 summarizes the terms of our debt capital as of March 31. And last, on Slide 23, we summarize our recent distributions to stockholders. Most recently, our Board declared a quarterly distribution of $0.29 per share payable on June 29 to stockholders of record as of June 11.
With that, I'll now turn it back to David for some closing remarks. David?