Additional impairment loss during disposal of investment and carrying value.

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Business combination, impairment loss.

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Equity Method Investment, Sale of Investment and Call Option.

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Percentage of fully diluted outstanding equity regarding equity method investments.

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Period for purchase of remaining equity.

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Reducing carrying amount of investment.

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- Definition

Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer.

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This item represents the carrying amount on the entity's balance sheet of its investment in common stock of an equity method investee. This is not an indicator of the fair value of the investment, rather it is the initial cost adjusted for the entity's share of earnings and losses of the investee, adjusted for any distributions (dividends) and other than temporary impairment (OTTI) losses recognized.

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The total amount of investments that are intended to be held for an extended period of time (longer than one operating cycle).

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Amount of other-than-temporary impairment (OTTI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), recognized in earnings and other comprehensive loss (OCI).

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Investments - Additional Information (Details) - USD ($)	1 Months Ended		3 Months Ended	12 Months Ended
	Nov. 30, 2020	Jul. 31, 2020	Mar. 31, 2019	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Schedule Of Investments [Line Items]
Fair Value				$ 0	$ 36,133,000
Other-than-temporary impairments recognized in accumulated other comprehensive income				$ 0	$ 0	$ 0
Period for purchase of remaining equity			2 years
DogHero Ltd.
Schedule Of Investments [Line Items]
Business combination, consideration transferred		$ 3,000,000
Business combination, impairment loss		2,000,000
Reducing carrying amount of investment		$ 3,000,000
Sale of investment and call option	$ 2,900,000
Additional impairment loss during disposal of investment and related carrying value	$ 100,000
DogHero Ltd. \| Online Marketplace for Pet Service \| South America
Schedule Of Investments [Line Items]
Long-term investments			$ 5,000,000
Series C Preference Shares \| DogHero Ltd.
Schedule Of Investments [Line Items]
Purchase of shares regarding equity method investments			$ 3,400,000
Percentage of fully diluted outstanding equity regarding equity method investments			17.00%