Net Income (Loss) Per Share (Schedule of Net Income (Loss) Per Share) (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Numerator:
Net income (loss)	$ (104,767)	$ (68,987)	$ 49,387
Denominator:
Weighted average common shares - basic	29,355	29,007	30,241
Potentially dilutive common share equivalent	0	0	761
Weighted average common shares - dilutive	29,355	29,007	31,002
Basic net income (loss) per share	$ (3.57)	$ (2.38)	$ 1.63
Diluted net income (loss) per share	$ (3.57)	$ (2.38)	$ 1.59
Anti-dilutive employee stock-based awards, excluded	2,362	1,556	422