During the nine months ended September 30, 2017, we repurchased or acquired 435,710 shares of our common stock. In the third quarter of 2017, we repurchased 252,000 shares of our outstanding common stock for $10.0 million, or an average of $39.75 per share, under our securities repurchase program approved by our Board of Directors. Additionally, we repurchased 50,000 shares of our outstanding common stock for $2.7 million, or an average of $53.03 per share, under this program during the first quarter of 2017. We did not repurchase any common stock under this program during the second quarter of 2017. As of September 30, 2017, our remaining authorization under the program was $19.4 million. In October 2017, our Board of Directors increased the authority delegated to management to repurchase our outstanding securities to $200.0 million.
During the second quarter of 2017, we acquired 133,710 shares of our common stock for $5.8 million, or an average of $43.28 per share, from employees in connection with a net share settlement feature of employee equity awards.