Net Income (Loss) per Share Schedule of Dilutive Securities Included In Computation of Net Income (Loss) per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]
Net income (loss)	$ 56,823	$ (27,379)
Weighted-average common shares outstanding, basic (in shares)	33,080	32,567
Weighted-average common shares outstanding, diluted (in shares)	34,294	32,567
Net income (loss) per share, basic (in dollars per share)	$ 1.72	$ (0.84)
Net income (loss) per share, diluted (in dollars per share)	$ 1.66	$ (0.84)
Outstanding stock options
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]
Dilutive securities included in computation of net income (loss) per share (in shares)	1,121	0
Unvested RSAs
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]
Dilutive securities included in computation of net income (loss) per share (in shares)	1	0
Unvested RSUs
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]
Dilutive securities included in computation of net income (loss) per share (in shares)	92	0