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Stock-Based Compensation - Summary of Significant Ranges of Outstanding and Exercisable Options (Details) - Options $ / shares in Units, shares in Thousands, $ in Thousands	6 Months Ended
	Jun. 30, 2021 USD ($) $ / shares shares
$1.57 - $14.99
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Lower range limit (in dollars per share)	$ 1.57
Upper range limit (in dollars per share)	$ 14.99
Number Outstanding (in shares) | shares	143
Weighted Average Remaining Contractual Life (in Years)	7 years 9 months 7 days
Weighted Average Exercise Price (in dollars per share)	$ 2.62
Number Exercisable (in shares) | shares | shares	90
Weighted Average Exercise Price (in dollars per share)	$ 2.84
Options Outstanding, Aggregate Intrinsic Value | $	$ 521
$15.00 - $25.59
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Lower range limit (in dollars per share)	$ 15.00
Upper range limit (in dollars per share)	$ 25.59
Number Outstanding (in shares) | shares	8
Weighted Average Remaining Contractual Life (in Years)	2 years 2 months 26 days
Weighted Average Exercise Price (in dollars per share)	$ 15.00
Number Exercisable (in shares) | shares | shares	8
Weighted Average Exercise Price (in dollars per share)	$ 15.00
$25.60 - $143.99
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Lower range limit (in dollars per share)	25.60
Upper range limit (in dollars per share)	$ 143.99
Number Outstanding (in shares) | shares	2
Weighted Average Remaining Contractual Life (in Years)	2 years 10 months 9 days
Weighted Average Exercise Price (in dollars per share)	$ 41.81
Number Exercisable (in shares) | shares | shares	2
Weighted Average Exercise Price (in dollars per share)	$ 41.81
$144.00 - $409.99
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Lower range limit (in dollars per share)	144.00
Upper range limit (in dollars per share)	$ 409.99
Number Outstanding (in shares) | shares	5
Weighted Average Remaining Contractual Life (in Years)	5 years 1 month 24 days
Weighted Average Exercise Price (in dollars per share)	$ 144.00
Number Exercisable (in shares) | shares | shares	5
Weighted Average Exercise Price (in dollars per share)	$ 144.00
$410.00 - $924.00
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Lower range limit (in dollars per share)	410.0
Upper range limit (in dollars per share)	$ 924.00
Number Outstanding (in shares) | shares	1
Weighted Average Remaining Contractual Life (in Years)	3 years 8 months 8 days
Weighted Average Exercise Price (in dollars per share)	$ 430.64
Number Exercisable (in shares) | shares | shares	1
Weighted Average Exercise Price (in dollars per share)	$ 430.64
$1.57 - $924.00
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Lower range limit (in dollars per share)	1.57
Upper range limit (in dollars per share)	$ 924.00
Number Outstanding (in shares) | shares	159
Weighted Average Remaining Contractual Life (in Years)	7 years 3 months 18 days
Weighted Average Exercise Price (in dollars per share)	$ 10.82
Number Exercisable (in shares) | shares | shares	106
Weighted Average Exercise Price (in dollars per share)	$ 15.09
Options Outstanding, Aggregate Intrinsic Value | $	$ 521

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- Definition

Amount by which the current fair value of the underlying stock exceeds the exercise price of options outstanding.

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Weighted average remaining contractual term of outstanding stock options, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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