Stockholders' Equity - Common Stock and Stock-based Compensation (Details) $ in Millions	Aug. 06, 2020 USD ($) shares	Jun. 30, 2022 plan shares	Mar. 31, 2022 shares	Jan. 01, 2022 shares	Dec. 31, 2021 shares	Jun. 30, 2021 shares	Mar. 31, 2021 shares	Jan. 01, 2021 shares	Dec. 31, 2020 shares
Stockholders' Equity
Authorized shares of capital stock (in shares)		205,000,000
Authorized shares of common stock (in shares)		200,000,000			200,000,000
Authorized shares of preferred stock (in shares)		5,000,000			5,000,000
Common stock, issued (in shares)		77,219,835			75,754,663
Common stock, outstanding (in shares)		77,219,835			75,754,663
Available shares of common stock reserved for future issuance (in shares)		31,098,418
Net proceeds | $	$ 299.8
Number of stock-based compensation plans | plan		2
Common Stock
Stockholders' Equity
Common stock, outstanding (in shares)		77,219,835	76,616,534		75,754,663	74,507,853	74,038,208		72,451,521
Sale of common stock (in shares)	6,800,000
Outstanding restricted stock units
Stockholders' Equity
Available shares of common stock reserved for future issuance (in shares)		5,477,279
Outstanding performance restricted stock units
Stockholders' Equity
Available shares of common stock reserved for future issuance (in shares)		2,515,924
Outstanding stock options
Stockholders' Equity
Available shares of common stock reserved for future issuance (in shares)		5,964,973
Reserved for convertible senior notes
Stockholders' Equity
Available shares of common stock reserved for future issuance (in shares)		17,140,242
Employee Stock
Stockholders' Equity
Available shares of common stock reserved for future issuance (in shares)		379,670
Equity Incentive Plan 2014
Stockholders' Equity
Increase in shares in available for future issuance				3,782,719				3,619,344