PRSS 2017 Annual Report

65 8. Restructuring Restructuring costs were $2.1 million in the year ended December 31, 2016 and are included in “Restructuring costs” in the accompanying Condensed Consolidated Statements of Operations. During 2016, we completed a plan to transition portions of the remaining workforce in Hayward, California to our corporate headquarters in Louisville, Kentucky. This plan created efficiencies and streamlined our operations. In 2016, this expense consisted of severance charges of $1.8 million and a charge of $0.3 million for the abandonment of our office space in Hayward, California, which represented the net present value of the remaining minimum lease payments less sub-lease proceeds. The change in the restructuring liability is summarized as follows (in thousands): December 31, 2017 2016 Accrued restructuring balance, beginning of period $ 570 $ — Employee severance — 1,789 Lease related (53) 314 Cash payments (497) (1,533) Accrued restructuring balance, end of period $ 20 $ 570 9. Net Loss per Share of Common Stock Basic net loss per share is computed by dividing the net loss income attributable to common shares for the period by the weighted average number of common shares outstanding during the period. Diluted net loss per share attributed to common shares is computed by dividing the net loss attributable to common shares for the period by the weighted average number of common and potential common shares outstanding during the period if the effect of each class of potential common shares is dilutive. Potential common shares include restricted stock units and incremental shares of common stock issuable upon the exercise of stock options. The following table sets forth the computation of our basic and diluted net loss per share of common stock (in thousands, except for per share amounts). Year Ended December 31, 2017 2016 Numerator: Net loss $ (10,257) $ (26,470) Denominator used in computing net loss per share of common stock: Basic 16,771 16,709 Diluted 16,771 16,709 Net loss per share of common stock: Basic $ (0.61) $ (1.58) Diluted $ (0.61) $ (1.58) The following outstanding shares of potentially dilutive securities were excluded from the computation of diluted net loss per share of common stock for the periods presented because including them would have been antidilutive (in thousands): Year Ended December 31, 2017 2016 Stock options to purchase common stock and restricted stock units 64 56