Shareholders' Equity (Tables)

6 Months Ended

Jun. 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 six months ended June 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	(1,987		)
Stock-based compensation	15,340
Common stock and additional paid-in capital, June 30, 2017	$	25,492