Other Assets (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2021	Dec. 31, 2020
Impairment loss on cost method investment	$ 90	$ 4,954
Security deposits	2,030	736
Other nonoperating income expense
Unrealized gain on remeasurement of common stock and warrants		1,284
Unrealized loss on remeasurement of common stock and warrants	1,046
Route1 Inc
Fair value of the investment	$ 722	$ 1,768

Amount of write-down of assets recognized in the income statement. Includes, but is not limited to, losses from tangible assets, intangible assets and goodwill.

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