Stock-Based Compensation - Service Based Restricted Stock Units (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
Dec. 31, 2022	Dec. 31, 2021
Weighted Average Grant-Date Fair Value
Stock based compensation expenses	$ 315	$ 943
Unrecognized stock-based compensation expenses	$ 100
Unvested restricted stock units
Number of Shares
Outstanding at beginning of period (in shares)	29,289	24,136
Granted (in shares)	125,000	28,186
Forfeited (in shares)	(5,774)	(1,073)
Vested (in shares)	(23,515)	(21,960)
Outstanding at end of period (in shares)	125,000	29,289
Weighted Average Grant-Date Fair Value
Outstanding at beginning of period (in dollars per share)	$ 12.87	$ 28.60
Granted (in dollars per share)	1.47	9.90
Forfeited (in dollars per share)	19.00	52.91
Vested (in dollars per share)	11.33	24.97
Outstanding at end of period (in dollars per share)	$ 1.47	$ 12.87
Stock based compensation expenses	$ 100	$ 100
Period of recognition for unrecognized stock-based compensation expenses	12 months
Unvested restricted stock units \| Minimum
Weighted Average Grant-Date Fair Value
Vesting period	1 year
Unvested restricted stock units \| Maximum
Weighted Average Grant-Date Fair Value
Vesting period	3 years

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Amount of cost to be recognized for nonvested award under share-based payment arrangement. Excludes share and unit options.

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The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date.

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The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period.

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The weighted average fair value as of grant date pertaining to an equity-based award plan other than a stock (or unit) option plan for which the grantee gained the right during the reporting period, by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash in accordance with the terms of the arrangement.

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