Stock-Based Compensation - Narrative (Details) $ / shares in Units, $ in Thousands					1 Months Ended		3 Months Ended
	Feb. 23, 2024 shares	Mar. 02, 2023 shares	Jan. 01, 2021	Jan. 01, 2020 shares	Nov. 30, 2020 USD ($)	May 31, 2020 tranche shares	Mar. 31, 2024 USD ($) $ / shares shares	Mar. 31, 2023 USD ($) $ / shares shares	Dec. 31, 2023 $ / shares shares	Sep. 30, 2018 shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted average grant date fair value, grants in period (in usd per share) | $ / shares							$ 12.92	$ 19.82
Stock based compensation not recognized, options | $							$ 37,000
Stock based compensation not recognized, period for recognition (years)							2 years 3 months 18 days
Total stock-based compensation expense | $							$ 27,041	$ 22,266
Common stock issued under employee stock purchase plan (in shares)							0	0
Stock options issued and outstanding
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercises in period, intrinsic value | $							$ 600	$ 400
Expected dividend yield							0.00%	0.00%
Shares underlying unvested restricted stock units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock based compensation not recognized, period for recognition (years)							2 years 3 months 18 days
Stock based compensation not recognized, other than options | $							$ 150,800
Unvested balance (in shares)							5,236,751		4,346,785
Weighted average grant date fair value (in usd per share) | $ / shares							$ 36.96		$ 42.63
Granted (in shares)							1,164,887
Vested and released (in shares)							(120,645)
Canceled (in shares)							(154,276)
Shares underlying unvested performance-based restricted stock units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock based compensation not recognized, period for recognition (years)							2 years 4 months 24 days
Stock based compensation not recognized, other than options | $							$ 16,800
Weighted-average derivative service period					4 years
Additional service period requirement					2 years
Total stock-based compensation expense | $					$ 0		$ 1,400	$ 300
Total market-based restricted stock units approved and granted (in shares)							870,268
Unvested balance (in shares)							1,329,525		412,490
Weighted average grant date fair value (in usd per share) | $ / shares							$ 41.30		$ 91.25
Granted (in shares)							870,268
Canceled (in shares)							(1,467)
Shares underlying unvested performance-based restricted stock units | Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted-average derivative service period					7 months 6 days
Market-based stock unit vesting period					7 months 6 days
Shares underlying unvested performance-based restricted stock units | Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted-average derivative service period					4 years
Market-based stock unit vesting period					4 years 6 months
Phantom Share Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted-average derivative service period					4 years
Market-based stock unit vesting period					6 months
Forfeitures value | $							$ 25,700
MSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Market-based restricted stock share price goal			30 days
Unvested balance (in shares)									2,260,764
Weighted average grant date fair value (in usd per share) | $ / shares									$ 65.20
MSUs | Chief Executive Officer
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total market-based restricted stock units approved and granted (in shares)						1,695,574
Number of tranches | tranche						3
Shares available for issuance under the 2018 Employee Stock Purchase Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock based compensation not recognized, period for recognition (years)							1 month 6 days
Stock based compensation not recognized, other than options | $							$ 700
Total stock-based compensation expense | $							$ 1,400	$ 1,600
Shares authorized (in shares)	1,106,700	1,026,194		942,614
Maximum employee subscription rate, ESPP							10.00%
Purchase price of common stock (as a percent of the fair value of common stock)							85.00%
Purchase period							6 months
Common stock issued under employee stock purchase plan (in shares)							0	0
Shares available for issuance under the 2018 Employee Stock Purchase Plan | 2018 Employee Stock Purchase Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares approved (in share)										922,250