Stock-Based Compensation - Restricted Stock Awards (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
Mar. 31, 2022	Mar. 31, 2021
Weighted Average Grant-Date Fair Value
Stock based compensation expenses	$ (179)	$ (236)
Restricted stock awards
Number of Shares
Unvested at beginning of period (in shares)	7,118	13,345
Forfeited (in shares)	(6,227)	(6,227)
Unvested at end of period (in shares)	891	7,118
Weighted Average Grant-Date Fair Value
Unvested at beginning of period (in dollars per share)	$ 62.70	$ 62.70
Forfeited (in dollars per share)	62.70	62.70
Unvested at end of period (in dollars per share)	$ 62.70	$ 62.70
Vesting period	20 months
Unvested, number of shares (in shares)	891	7,118
Forfeited (in shares)	(6,227)	(6,227)
Restricted stock awards - performance based awards
Number of Shares
Forfeited (in shares)	(6,227)
Weighted Average Grant-Date Fair Value
Forfeited (in shares)	(6,227)
Stock based compensation expenses	$ (391)	$ (391)

Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

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