Organization and Summary of Significant Accounting Policies - Weighted Average Number of Shares Outstanding and Income (Loss) Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Numerator for basic and diluted earnings per share:
Net income (loss)	$ (47,917)	$ 4,074
Denominator:
Weighted average shares outstanding basic (in shares)	64,036	59,609
Dilutive effect of stock-based awards (in shares)		785
Diluted weighted average shares outstanding (in shares)	64,036	60,394
Anti-dilutive stock-based awards excluded (in shares)	12,234	12,161
Net income (loss) per share:
Basic (in dollars per share)	$ (0.75)	$ 0.07
Diluted (in dollars per share)	$ (0.75)	$ 0.07