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Bank Borrowings (Tables)

3 Months Ended

12 Months Ended

Mar. 31, 2022

Dec. 31, 2021

Bank Borrowings [Abstract]

Schedule of bank borrowings

Changes in bank borrowings are as follows:

		Three Months Ended March 31,
		2021				2022
Beginning balance		$	12,184			$	13,301
Proceeds from bank borrowings			13,445				—
Repayments of principal			(12,265	)			—
Exchange difference			(208	)			34
Ending balance		$	13,156			$	13,335

		Year Ended December 31,
		2019				2020				2021
Beginning balance		$	66,267			$	11,922			$	12,184
Proceeds from bank borrowings			17,735				17,308				38,926
Repayments of principal			(71,674	)			(17,815	)			(37,568	)
Exchange difference			(406	)			769				(241	)
Ending balance		$	11,922			$	12,184			$	13,301

Schedule of banking facilities and aggregate carrying amount

		December 31, 2021			March 31, 2022
Buildings		$	31,361		$	31,055
Machinery and equipment			7,376			6,559
Land use rights			4,470			4,466
Total		$	43,207		$	42,080

		December 31, 2020			December 31, 2021
Buildings		$	22,732		$	31,361
Machinery and equipment			19,297			7,376
Land use rights			2,789			4,470
Total		$	44,818		$	43,207