Discontinued Operations - Summary of Operating Results Related to Discontinued Operations (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2020	Dec. 31, 2019
Discontinued Operations And Disposal Groups [Abstract]
Product revenue		$ 901
Cost of revenue		857
Gross profit		44
Operating expenses:
Research and development		656
Sales and marketing		411
General and administrative		185
Total operating expenses		1,252
Operating loss		(1,208)
Other income (expense)		112
Loss from discontinued operations		(1,096)
Loss from sale of business		(6,508)
Net loss from discontinued operations	$ 0	$ (7,604)

Disposal group including discontinued operation other income (expense).

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Disposal group including discontinued operation research and development expense.

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Disposal group including discontinued operation sales and marketing expense.

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Disposal group including discontinued operations operating expenses.

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Income (loss) from discontinued operations before gain (loss) from sale of business, net of tax

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Amount after tax of gain (loss) not previously recognized resulting from the disposal of a discontinued operation.

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Amount of costs of goods sold attributable to disposal group, including, but not limited to, discontinued operation.

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Amount of general and administrative expense attributable to disposal group, including, but not limited to, discontinued operation.

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Amount of gross profit attributable to disposal group, including, but not limited to, discontinued operation.

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Amount of operating expense attributable to disposal group, including, but not limited to, discontinued operation.

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Amount of operating income (loss) attributable to disposal group, including, but not limited to, discontinued operation.

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Amount of revenue attributable to disposal group, including, but not limited to, discontinued operation.

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Amount after tax of income (loss) from a discontinued operation including the portion attributable to the noncontrolling interest. Includes, but is not limited to, the income (loss) from operations during the phase-out period, gain (loss) on disposal, gain (loss) for reversal of write-down (write-down) to fair value, less cost to sell, and adjustments to a prior period gain (loss) on disposal.

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