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Stockholders' Equity and Stock-Based Compensation - Narrative (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	1 Months Ended	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2021	Mar. 31, 2020	Nov. 14, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Intrinsic value of options exercised		$ 15,000	$ 6,000
Proceeds from the exercise of options		$ 574	$ 558
Issuance of common stock under the Employee Stock Purchase Plan (in shares)		0
Unrecognized expense	$ 58,300	$ 58,300
Common stock repurchase plan, authorized				$ 10,000
Number of shares repurchased (in shares)		0
Restricted stock units and awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vested, fair value		$ 100
Performance Restricted Stock Awards and Performance Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Awards outstanding (in shares)	700	700
Performance-based awards, performance goals not yet established (in shares)	300	300
Follow-on public offering
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares issued (in shares)	2,500
Sale of stock, price per share (in dollars per share)	$ 34.00	$ 34.00
Net proceeds received	$ 82,400
Underwriters option to purchase
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares issued (in shares)	300

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