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Stockholders' Equity [Line Items]

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Amount of noncash expense for share-based payment arrangement.

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Number of additional shares authorized for issuance under share-based payment arrangement.

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Number of shares authorized for issuance under share-based payment arrangement.

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The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable.

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Number of new stock issued during the period.

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Stockholders' Equity (Narrative) (Details) $ in Thousands		1 Months Ended	3 Months Ended
Stockholders' Equity (Narrative) (Details) $ in Thousands	Apr. 18, 2021 shares	Jan. 31, 2021 shares	Mar. 31, 2021 USD ($) shares	Mar. 31, 2020 USD ($) item shares	Dec. 02, 2020 shares	Aug. 04, 2020 shares
Stockholders' Equity [Line Items]
Number of equity compensation plans \| item				3
Stock-based compensation \| $			$ 10,165	$ 4,032
ESPP [Member]
Stockholders' Equity [Line Items]
Shares issued			983,180	0
Additional common stock reserved for issuance		3,800,000
Common stock remain available for issuance			8,741,461
Stock-based compensation \| $			$ 2,500
2020 Equity Incentive Plan [Member]
Stockholders' Equity [Line Items]
Shares authorized						11,000,000
Common stock remain available for issuance			6,700,000
2020 Inducement Equity Incentive Plan [Member]
Stockholders' Equity [Line Items]
Shares authorized					2,500,000
Stock Options [Member]
Stockholders' Equity [Line Items]
Stock-based compensation \| $			$ 2,500
Time-Based Restricted Stock Units (RSUs) [Member]
Stockholders' Equity [Line Items]
Stock-based compensation \| $			5,000
Performance-Based Restricted Stock Units (RSUs) [Member]
Stockholders' Equity [Line Items]
Stock-based compensation \| $			$ 0
Subsequent Event [Member] \| 2020 Inducement Equity Incentive Plan [Member]
Stockholders' Equity [Line Items]
Additional common stock reserved for issuance	750,000