Stock Buyback Program

12 Months Ended

Dec. 31, 2017

Equity [Abstract]

Stock Buyback Program

Stock Buyback Program

Our Board of Directors (the “Board”) has granted us the authority to repurchase shares of our common stock in an amount equal to any equity issued to our employees, officers and directors under our share-based compensation plans, including share-based awards issued under our existing long-term incentive plans and shares issued to our employees under our employee stock purchase plans (Note 11). We may continue to make repurchases pursuant to this authority from time to time as additional equity is issued under our stock based plans depending on prevailing market conditions and other factors. As described in an announced plan, all repurchases may be commenced or suspended at any time as determined by management. We have not purchased any shares available under this program since 2015. As of December 31, 2017, 3,234,091 shares of our common stock were available for repurchase under the program.