v3.20.2

Stockholders' Equity - Common Stock and Stock-based Compensation (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
	Jun. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Jan. 01, 2020	Dec. 31, 2019	Jun. 30, 2019	Mar. 31, 2019	Jan. 01, 2019	Dec. 31, 2018
Stockholders' Equity
Authorized shares of capital stock (in shares)	205,000,000	205,000,000
Authorized shares of common stock (in shares)	200,000,000	200,000,000			200,000,000
Authorized shares of preferred stock (in shares)	5,000,000	5,000,000			5,000,000
Common stock, outstanding (in shares)	64,300,599	64,300,599			63,569,109
Available shares of common stock reserved for future issuance (in shares)	26,638,801	26,638,801
Issuance of common stock in connection with employee stock purchase plan	$ 1,771
Common Stock
Stockholders' Equity
Common stock, outstanding (in shares)	64,300,599	64,300,599	63,703,067		63,569,109	63,231,376	58,189,318		57,968,493
Issuance of common stock in connection with employee stock purchase plan (in shares)	83,573	83,573
Issuance of common stock in connection with employee stock purchase plan		$ 1,800
Restricted Stock Units (RSUs)
Stockholders' Equity
Available shares of common stock reserved for future issuance (in shares)	3,534,193	3,534,193
Performance restricted stock units
Stockholders' Equity
Available shares of common stock reserved for future issuance (in shares)	1,831,648	1,831,648
Stock options
Stockholders' Equity
Available shares of common stock reserved for future issuance (in shares)	4,132,718	4,132,718
Convertible debt securities
Stockholders' Equity
Available shares of common stock reserved for future issuance (in shares)	17,140,242	17,140,242
Employee Stock
Stockholders' Equity
Available shares of common stock reserved for future issuance (in shares)	729,391	729,391
Equity Incentive Plan 2014
Stockholders' Equity
Increase in shares in available for future issuance				3,175,011				2,896,365

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