ude share-based compensation expense as follows: Three Months Ended Dec. 31, Mar. 31, Jun. 30, Sep. 30, Dec. 31, Mar. 31, Jun. 30, Sep. 30, Share-Based Compensation 2013 2014 2014 2014 2014 2015 2015 2015 (in thousands) (unaudited) Product devebpment $ 2.938 $ 4.265 $ 5.556 S 7.086 $ 7,851 S

ies related to uncertain tax positions in the provision for income tax expense on the consolidated statements of operations and comprehensive loss. Share-Based Compensation We measure compensation expense for all share-based payment awards, including stock options granted to employees, directors, and non-employees base