Summary of Significant Accounting Policies - Numerator and Denominator of the Basic and Diluted Net Income Per Share Computations (Details) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Net income - basic	$ 4,008
Net income - diluted	$ 4,008
Weighted average shares outstanding - basic (in shares)	62,717	60,424	62,583	60,082
Dilutive common shares equivalents - Warrants to purchase common stock (in shares)	148
Dilutive common share equivalents - Convertible senior notes (if-converted) (in shares)	0
Weighted average shares outstanding - diluted (in shares)	65,663	60,424	62,583	60,082
Options to purchase common stock
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Dilutive common stock equivalents - Incremental common shares attributable to dilutive effect (in shares)	2,550
Unvested restricted stock units
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Dilutive common stock equivalents - Incremental common shares attributable to dilutive effect (in shares)	246
Awards to be granted under the ESPP
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Dilutive common stock equivalents - Incremental common shares attributable to dilutive effect (in shares)	2