Summary of Significant Accounting Policies - Net Income per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Summary of Significant Accounting Policies
Anti-dilutive common equivalent shares excluded from calculation	4,929	2,554	1,951
Net income per share:
Net income available to common stockholders	$ 183,079	$ 98,650	$ 49,982
Weighted average common shares outstanding used in computing basic income per share	33,043	33,555	33,257
Incremental options and RSUs	499	713	871
Weighted average common shares used in computing diluted net income per share	33,542	34,268	34,128
Net income per share
Basic	$ 5.54	$ 2.94	$ 1.50
Diluted	$ 5.46	$ 2.88	$ 1.46