Item 1A. Risk Factors

There have been no other material changes to the risk factors included in the Company’s Annual Report for the year ended December 31, 2015. In addition to the other information included in this report, you should carefully consider the factors discussed in Part I, “Item 1A. Risk Factors” in the Annual Report on Form 10-K/A for the year ended December 31, 2015 and the factors identified under "Safe Harbor" at the end of Item 2 of Part I of the Quarterly Report on Form 10-Q, which could materially affect our business, financial condition, cash flows or results of operations. The risks described in the Annual Report are not the only risks facing the company. Additional risks and uncertainties not currently known to the Company or that the Company currently considers immaterial also may materially adversely affect its business, financial condition, and/or operating results.

Treasury Shares

The Company did not purchase shares of its Class A Common Stock during the first quarter of 2016.

In November 2011, the Company’s Board authorized the purchase of up to an additional 3,000,000 shares under the purchase plan program and the maximum number of shares that may yet be purchased under the program is 665,475. The November 2011 authorization does not have an expiration date.

During the first quarter of 2016, the Company acquired 3,931 shares of its Class A Common Stock through the withholding of shares necessary to satisfy tax withholding obligations upon the vesting of restricted stock awards. These shares were acquired at an average price of $63.21 per share.