Shareholders' Equity (Tables)

9 Months Ended

Sep. 30, 2017

Statement of Stockholders' Equity [Abstract]

Common stock and additional paid-in capital activity

The following table summarizes the common stock and additional paid-in capital activity during the nine months ended September 30, 2017 (in thousands):

Common stock and additional paid-in capital, December 31, 2016	$	12,139
Common stock issued pursuant to stock-based compensation plans, net	34,726
Stock-based compensation	25,252
Common stock and additional paid-in capital, September 30, 2017	$	72,117